1 

NASA SP-7039(11) 

ASection 

Abstracts 

NASA It+ °D,
 

PATENT
 

ABSTRACTS
 I -d n A 

o b, 7-0

BIBLIOGRAPHY
 

k4 

t-4 = [a A CONTINUING BIBLIOGRAPHY C . u1 

Section 1* Abstracts,--> 

JULY 1977 I'n a

C)C 

NAIONA -TECHNIAL , , 

lINFO'R'4AION" SERYLCE, rI L SPRINGFIELD, Oi VA '22161 IS-O

NATIONAL AERONAUTICS AND SPACE ADMINISTRATION 
ACCESSION 

Bibliography Number 

NASA SP-7039(04) 

NASA SP-7039(05) 

NASA SP-7039(06) 

NASA SP-7039(07) 

NASA SP-7039(08) 

NASA SP-7039,(09) 

NASA SP-?039{1 0) 

NASA SP-7039(11) 

NUMBER RANGES 

STAR Accession Numbers 

N69-20701-N73-33931 

N74-1 0001-N74-21629 

N74-21630-N74-35363 

N75-10001-N75-21218 

N75-21219-N75-34001 

N76-10001-N76-22149 

N76-22150-N76-34122 

N77-10001-N77-22041 

This bibliography was prepared by the NASA Scientific and Technicaf Information Facility operated for 

the National Aeronautics and Space Administration by Informatics Information Systems Company 
NApSP-7039(1,1) 

SectionA. 

NASA 

PATENT
 

BIBLIOGPoA P Y
 

A CONTINUING BIB I 

Section 1 - Abstracts 

JULY 1977 

(NASA-SP-7039(11)-Section-1) NASA PATENT N78-20014
 

ABSTRACTS BIBLIOGRAPHY: A CONTINUING
 

BIBLIOGRAPHY, JULY 1: ABSTRACTS, SUPPLEnENT
 

11 (National Aeronautics and Space Unclas
 

Administration) 80 p E04 CSCJ 05B 00/82 09012
 
ACCESSION 

Bibliography Number 

NASA SP-7039(04) 

NASA SP-7039(05) 

NASA SP-7039(06) 

NASA SP-7039(07) 

NASA SP-7039(08) 

NASA SP-7039,(09) 

NASA SP-7039(10) 

NASA SP-7039( 11) 

NUMBER RANGES 

STAR Accession Numbers 

N69-20701-N73-33931 

N74-10001-N74-21629 

N74-21630-N74-35363 

N75-10001-N75-21218 

N75-21219-N75-34001 

N76-10001-N76-22149 

N76-22150-N76-34122 

N77-10001-N77-22041 

This bibliography was prepared by the NASA Scientific and Technical Information Facility operated for 

the National Aeronautics and Space Administration by Informatics Information Systems Company 
I Report No 2 Government Accesion No 3 Recipient's Catalog No 

NASA SP-7039 (1i) 

4. Title and Subtitle 6 Report Date 

NASA PATENT ABSTRACTS BIBLIOGRAPHY July 1977 

A Continuing Bibliography (Supplement 11) 6 Performing OrganizatonCode 

7 Author(s) B Performing Organization Report No 

10 Work Unit No 

9 Performing Organization Name and Address 

National Aeronautics and Space Administration 11 Contract or Grant No 

Washington, D. C. 20546 

13 Type of Report and Period Covered 

12 Sponsoring Agency Name and Address 

14 Sponsoring Agency Code 

15 Supplementary Notes 

Section 1 - Abstracts
 

16 Abstract
 

This bibliography is issued in two sections: Section I - Abstracts,
 

and Section 2 - Indexes. This issue of the Abstract Section cites
 

197 patents and applications for patent introduced into the NASA
 

scientific and technical information system during the period of
 

January 1977 through June 1977. Each entry of the Abstract Section
 

consists of a citation, an abstract, and in most cases, a key
 

illustration selected from the patent or application for patent.


This issue of the Index Section contains entries for 3256 patent
 

and application for patent citations covering the period May 1969
 

through June 1977. The Index Section contains five indexes -­ subject, inventor, source, number and accession number.
 

17 Key Words (Suggested by Author(s)) 

Bibliographies 

Inventions 

NASA Programs 

Patents 

I 1S Distribution Statement 

Unclassified - Unlimited 

19. Security Classif (of this report) 

Unclassified 

20 Security Classif (of this page) 

Unclassified 

21 No of Pages 

80 

22 Ftice 

i575UtFf-C- 1 

For sale by the National Technical Information Service, Springfield, Virginia 22161 

NASA-Langley, 1977
 
NASA SP-7039(1 1) 

Section 1 

Abstracts 

NASA 

PATENT
 

ABSTRACTS
 

BIBLIOGRAPHY
 

A CONTINUING BIBLIOGRAPHY 

Section 1 * Abstracts 

Annotated references to NASA-owned 

inventions covered by U S patents and 

applications for patent that were announced 

ospace 

1977 and 

Reports 

in 

June 

Scientific 

(STAR) 

1977 

and 

between 

Technical 

January 

Aer­

,5 AND 

Scientificand Technical 4i;formazon Office tJCLYI97.7 

NATIONAL A'ERONAUTICS " AND. SPACE ADMINISTRATIONWashington, D:Cz 
INTRODUCTION
 

Several thousand inventions result each year from the aeronautical and space research supported 

by the National Aeronautics and Space Administration The inventions having important use in 

government programs or significant commercial potential are usually patented by NASA These 

inventions cover practically all fields of technology and include many that have useful and 

valuable commercial application 

NASA inventions best serve the interests of the United States when their benefits are available 

to the public In many instances, the granting of nonexclusive or exclusive licenses for the 

practice of these inventions may assist in the accomplishment of this objective This 

bibliography is published as a service to companies, firms, and individuals seeking new, 

licensable products for the commercial market 

The NASA Patent Abstracts Bibliography (NASA PAB) is a semiannual NASA publication 

containing comprehensive abstracts and indexes of NASA-owned inventions covered by U S 

patents and applications for patent The citations included in NASA PAB were originally 

published in NASA's Scientific and Technical Aerospace Reports (STAR) and cover STAR 

announcements made since May 1969 

For the convenience of the user, each issue of NASA PAB has a separately bound Abstract 

Section (Section 1) and Index Section (Section 2) Although each Abstract Section covers only 

the indicated six-month period, the Index Section is cumulative covering all NASA-owned 

inventions announced in STAR since May 1969 Thus a complete set of NASA PAB would 

consist of the Abstract Section of Issue 04 (January 1974). the Abstract Section for all 

subsequent issues, and the Index Section for the most recent issue 

The 197 citations published in this issue of the Abstract Section cover the period January 1977 

through June 1977 The Index Section contains references to the 3256 citations covering the 

penod May 1969 through June 1977 

ABSTRACT SECTION (SECTION 1) 

This PAB issue incorporates the 1975 STAR category revisions which include 10 major 

subdivisions divided into 74 specific categories and one general category/division (See Table 

of Contents for the scope note of each category under which are grouped appropnate NASA 

inventions) This new scheme was devised in lieu of the 34 category divisions which were 

utilized in PAB supplements (01) through (06) covering STAR abstracts from May 1969 through 

January 1974 Each entry in the Abstract Section consists of a STAR citation accompanied 

by an abstract and a key illustration taken from the patent or application for patent drawing 

Entries are arranged in subject category in order of the ascending NASA Accession Number 

originally assigned in STAR to the invention The range of NASA Accession Numbers within 

each issue is printed on the inside front cover 

Abstract Citation Data Elements Each of the abstract citations has several data elements useful 

for identification and indexing purposes, as follows 

NASA Accession Number
 

NASA Case Number
 

Inventor's Name
 

IIi 
Title of Invention
 

U S Patent Application Serial Number
 

U S Patent Number (for issued patents only)
 

U S Patent Office Classification Number(s)
 

(for issued patents only) 

These data elements in the citation of the abstract as depicted in the Typical Citation and Abstract reproduced below and are also used inthe several indexes 

TYPICAL CITATION AND ABSTRACT 

NASA SPONSORED AVAILABLE ON 

DOCUMENT -I MICROFICHE 

NASA 

ACCESSION 

- N77-13062"# National Aeronautics and Space Administration 

Lyndon B Johnson Space Center Houston Tax SOURCE 

NUMBERD 

TITLE 

SSTATOR ROTOR TOOLS Patent Application -Donald D Diamond inventor (to NASA) (Sew-Air Inc) Filed 

8 Nov 1976 13 p Sponsored by NASA 

(NASA-Case-MSC-1 6000-1 US-Patent-AppI-SN-73991 5) Avail 

NTIS HCAO2/MFA01 CSCL21E _ 

INVENTOR 

INENORAn apparatus and method for removing and reinserting base 

member segments in an arcuate slot was considered It is in an 

US PATENT 

APPLICATIONS 

NASA CASE 

NUMBER 

engine part where each base member separately includes blades 

or stators comprising holding the engine part in place It 

manipulates fingers on an arm into an interfitting abutting relationship with most of the blades on a base member and 

SE NUMBER 

RIAL 

applies a torque force to the base of the blades to move a AVAILABILITY 

base member relative to such slot NASA 

ABSTRACT 

COSATI CODE 

KEY ILLUSTRATION 

IV
 
INDEX SECTION (SECTION 2) 

The Index Section is divided into five indexes which are cross-indexed and are useful in 

locating a single invention or groups of inventions 

Each of the five indexes utilizes basic data elements (1) Subject Category Number, (2) NASA 

Accession Number, and (3) NASA Case Number, in addition to other specific index terms 

Subject Index Lists all inventions according to appropriate alphabetized technical term and 

indicates the related NASA Case Number, the Subject Category Number, and the NASA 

Accession Number 

Inventor Index: Lists all inventions according to alphabetized names of inventors and 

indicates the related NASA Case Number, the Subject Category Number, and the NASA 

Accession Number 

Source Index Lists all inventions according to alphabetized source of invention (ie, name 

of contractor or government installation where invention was made) and indicates the related 

NASA Case Number, the Subject Category Number, and the NASA Accession Number 

Number Index. Lists inventions in order of ascending (1) NASA Case Number, (2) U S Patent 

Application Serial Number. (3) U S Patent Classification Number, and (4) U S Patent Number 

and indicates the related Subject Category Number and the NASA Accession Number 

Accession Number Index: Lists all inventions in order of ascending NASA Accession Number 

and indicates the related Subject Category Number, the NASA Case Number. the U S Patent 

Application Serial Number, the U S Patent Classification Number, and the US Patent 

Number 

HOW TO USE THIS PUBLICATION TO IDENTIFY NASA INVENTIONS 

To identify one or more NASA inventions within a specific technical field or subject, several 

techniques are possible when using the flexibility incorporated into the NASA PAn 

(1) Using Subject Category To identify all NASA inventions in any one of the subject 

categories in this issue of NASA PAR, select the desired Subject Category in the Abstract 

Section (Section 1) and find the inventions abstracted thereunder For previous NASA 

PAR issues, the Table of Contents to Section 2 should be examined as the subject 

categories were changed beginning with NASA PAB(07) 

(2) Using Subject Index To identify all NASA inventions listed under a desired technical 

subject index term, (A) turn to the cumufative Subject Index in the Index Section and 

find the invention(s) listed under the desired technical subject term (B) Note the indicated 

Accession Number and the Subject Category Number (C) Using the indicated Accession 

Number, turn to the inside front cover of the Index Section to determine which issue of 

the Abstract Section includes the Accession Number desired (D) To find the abstract of 

the particular invention in the issue of the Abstract Section selected, (i) use the Subject 

Category Number to locate the Subject Category and (ni)use the Accession Number to 

locate the desired invention within the Subject Category listing 

v 
(3) Using Patent Classification Index To identify all inventions covered by issued NASA 

patents (does not include applications for patent) within a desired Patent Office 

Classification, (A) turn to the Patent Classification Number in the Number Index of Section 

2 and find the associated inventions(s), and (B) follow the instructions outlined in (2)(B), 

and (D)above 

PUBLIC AVAILABILITY OF COPIES OF PATENTS
 

AND PATENT APPLICATIONS
 

Copies of U S patents may be purchased directly from the U S Patent Office, Washington, 

D C 20231, for fifty cents a copy When ordering patents, the U S Patent Number should 

be used. and payment must be remitted in advance, preferably by money order or check 

payable to the Commissioner of Patents Prepaid purchase coupons for ordering are also 

available from the Patent Office 

NASA patent application specifications are sold in paper copy by the National Technical 

Information Service at price code A02 ($3 50 domestic. $7 00 foreign) Microfiche are sold 

at price code A01 ($3 00 domestic, $4 50 foreign) The US-Patent-AppI-SN-number should 

be used in ordering either paper copy or microfiche from NTIS 

LICENSES FOR COMMERCIAL USE: INQUIRIES AND APPLICATIONS FOR LICENSE 

NASA inventions, abstracted in NASA, PAB, are available for nonexclusive or exclusive 

licensing in accordance with the NASA Patent Licensing Regulations It is significant that all 

licenses for NASA inventions shall be by express written instruments and that no license will 

be granted or implied in a NASA invention except as provided in the NASA Patent Licensing 

Regulations 

Inquiries concerning the NASA Patent Licensing Program or the availability of licenses for the 

commercial use of NASA-owned inventions covered by U S patents or pending applications 

for patent should be forwarded to the NASA Patent Counsel of the NASA installation having 

cognizance of the specific invention, or the Assistant General Counsel for Patent Matters, Code 

GP National Aeronautics and Space Administration, Washington D C 20546 Inquiries should 

refer to the NASA Case Number, the Title of the Invention, and the U S Patent Number or 

the U S Application Serial Number assigned to the invention as shown in NASA PA& 

The NASA Patent Counsel having cognizance of the invention is determined by the first three 

letters or prefix of the NASA Case Number assigned to the invention The addresses of NASA 

Patent Counsels are listed alongside the NASA Case Number prefix letters in the following 

table Formal application of license must be submitted on the NASA Form, Application for 

NASA Patent License, which is available upon request from any NASA Patent Counsel 

vi 
NASA Case 

Number 

Prefix Letters 

Address of Cognizant 

NASA Patent Counsel 

ARC-xxxxx 

XAR-xxxxx 

Ames Research Center 

Mail Code 200-1 1A 

Moffett Field, California 94035 

Telephone (415)965-5104 

ERC-xxxxx 

XER-xxxxx 

HQN-xxxxx 

XHQ-xxxxx 

NASA Headquarters 

Mail Code GP 

Washington, D C 20546 

Telephone (202)755-3954 

GSC-xxxxx 

XGS-xxxxx 

Goddard Space Flight Center 

Mail Code 204 

Greenbelt, Maryland 20771 

Telephone (301)982-2351 

KSC-xxxxx 

XKS-xxxxx 

John F Kennedy Space Center 

Mail Code AA-PAT 

Kennedy Space Center, Florida 32899 

Telephone (305)867-2544 

LAR-xxxxx 

XLA-xxxxx 

Langley Research Center 

Mail Code 456 

Langley Station 

Hampton, Virginia 23365 

Telephone (804)827-3725 

LEW-xxxxx 

XLE-xxxxx 

Lewis Research Center 

Mail Code 500-311 

21000 Brookpark Road 

Cleveland, Ohio 44135 

Telephone (216)433-6346 

MSC-xxxxx 

XMS-xxxxx 

Lyndon B Johnson Space Center 

Mail Code AM 

Houston, Texas 77058 

Telephone (713)483-4871 

MFS-xxxxx 

XM F-xxxxx 

George C Marshall Space Flight 

Center 

Mail Code CC01 

Huntsville, Alabama 35812 

Telephone (205)453-0020 

NPO-xxxxx 

XNP-xxxxx 

FRC-xxxxx 

XFR-xxxxx 

WOO-xxxxx 

NASA Resident Legal Office 

Mail Code 180-601 

4800 Oak Grove Drive 

Pasadena California 91103 

Telephone (213)354-2700 

vii 
PATENT LICENSING REGULATIONS
 

Tite 14-AEROAUTICS MehEeNUIS ANDN 

SPACE 

Chapter V-Notional Aeronautics and 

Space Administration 

PART 1245-PATENTS 

Subpart 2-Patent Licensing 


Regulations 


1 Subpart 2 is revised in its entirety 

as follows: 

50c. 

1245200 Scope of subptrt 1245.201 Definitions 

1245.202 Basic considerations 

1245108 LiceMes for practical application of Inventions 

1245 204 Other licenses 

1245.205 Publication of NASA Inventions 

available for license. 

1245.l208 Application for nonexcluslve n- cease, 

1245 207 Application for exclusive license. 

1245.208 Processing applications for license 

1245.09 RDoyalties and fees. 

124510 Reports 1245211 Aevocation of licenses. 

124512 Appeals 1245 213 iAtgation

1245 214 Address of communications 

Aroar The provisions of this Subpart 2 issued under 42 U.8 C 24657, 2473(b) (8). 

§ 124S.2 Scope o subpart, 

This Subpart 2 prescribes the terms, 

conditions, and procedures for licensing 

inventions covered by U S. patents and 

patent applications for which the Admini trator of the National Aeronautics 

and Space Administration holds title on 

behalf of the United States. 

§ 1245.201 Denitons. 

For the purpose of this subpart, the 

following definitions apply: 

(a) "Invention" means an Invention 

covered by a U S patent or patent application for which the Administrator of 

NASA holds title on behalf of the Uited 

States and which Is designated by the 

Administrtion as appropriate for the 

grant of license(s) In accordance with 

this subpart. 

tsbl"Toe pracrice an inventio!'ateaothe invention 

(t ) "To practice an invention" means to make or have made, use or have used, 

sell or have sold, or otherwise dispose of 

according to law any machine, article of 

manufacture or composition of matter 

physically embodying the invention, or to use or have used the process or method 

comprising the invention 

(c) "Practical application" means the 

manufacture in the ease of a composition 

of matter or product, the use In the case of a process, or the operation in the case of a machine, under such conditions as to establish that the invention is being 

utilized and that Its benefits ae reason- ably accessible to the public

(d) "Special invention" means any invention designated by the NASA Assistant General Counsel for Patent Matters 

to be subject to short-form licensing 

procedures An invention may be designated as a special Invention when a determination Is made that 

(1) Practical application has occurred 

and Is likely to continue for the life of 

the Patent and for whch an exclusive iense isnot In force, or 

(2) The public interest would be 

served by the expeditious granting of a 

nonexclusive license for practice of the 

invention by the public. 

(e) The "Administrator" means the 

Administrator of the National Aeronauties and Space Administration, or his 

designee 

(f) "Government" means the Government of the United States of Amenca 

(g) The "Inventions and Contrlbutions Board" means the NASA Inventions and Contributions Board established by the Administrator of NASA 

within the Administration in accordance 

with section 305 of the National Aerowatils and Space Act of 1959 W 

amended (42 S C 2457) 

§ 1245 202 Basic consideratlons. 

(a) Much of the new technology 

resulting from NASA sponsored re- search and development in aeronautical 

and space activities has application in 

other fields NASA has special authorIty and responsibility under the National Aeronautics and Space Act of 

198,asAende d S C o 

1958, w amended (42 USC 2451), to 

provide for the widest practical disseinination and utilization of this new 

technology. In addition, NASA he been 

given unique requirements to protect the Inventions resulting from NASA activities and to promulgate licensing 

regulations to encourage commercial use of these inventions 

(b) NASA-owned inventions will best serve the interests of the United States 

when they are brought to practical ap- plicationin the shortest time possible. 

Although NASA encourages the nonexclusive licensing of its inventions to 

promote competition and achieve their 

widest possible utilization, the com- mercial development of certain Inventions calls for a substantial capital 

investment which private manufacturers may be unwilling to risk under a nonexclusive license. It is the policy 

of NASA to seek exclusive licensees 

when such licenses will provide the 

necessary incentive to the licensee to 

achieve early practical application of 

() The Administrator, in determining whether to grant an exclusive hcense, will evaluate all relevant Information submitted by applicants and 

all other persons and will consider the 

necessity for further technical and 

market development of the invention, 

the capabilities of prospective licensees, 

their proposed plans to undertake the 

required investment and development, 

the impact on competitors, and the 

benefits of the license to the Government and to the public Preference for 

exclusive license shall be given to US. 

citizens or companies who intend to 

manufacture or use, in the case of a Process, the invention in the United 

States of America, its territories and 

possessons Consideration may also be 

given to assisting small businesses and 

minority business enterprises, as well as economically depressed, low income 

and labor surplus areas (d) All licenses for inventions shall 

be by express written lnstments license shall be granted either expressly or by impllcation, for a NASA invention except as provided for In 

§f 1245 203 and 1245 204 and in any 

existing or future treaty or agreement 

between the United States and any foreign government 

(e) Licenses for inventions covered 

by NASA-owned foreign patents and 

patent applications shall be granted in 

accordance with the NASA Foreign 

Patent Licensing Regulations (U 1245 4) 

§ 1245.203 Licenses for practical application of inventions. 

(a) General As an incentive to encourage Practical application of inventions, licenses will be granted to responsble applicants according to the circumstances and conditions set forth in this 

section. 

(b) Nnexclustve licenses (1) Each inventlon will be made available to zesponsible applicants for nonexclusive, 

revocable licensing in accordance with 

6 1245 206, consistent vnth the provisions 

of any existing exclusive license. 

(2) The duration of the license shall f a perio f the license, 

be for a period as specified in the license, (3) The license shall require the 11­ censee to achieve the practical applieation of the invention and to then practice the Invention for the duration of the 

license. (4) The license may be granted for all 

or less than all fields of use of the invention and throughout the United 

States of America, Its territories and pos 

sessions, Puerto Rico, and the District of 

Columbia, or in any lesser geographic portion thereof 

(5) The license shall extend to the 

subsidiaries and affiliates of the licensee 

and shall be nonassignabe without approval of the Administrator, NASA. ex­ cept to the successor of that part of the 

licen's business to which the invention 

(c) Short-formt nneXclustve licenses. 

A nonexclusive, revocable license for a 

s eclal invention, as defined In 9 1245 201 

(d), shaU be granted upon written request, to any applicant by the Patent 

Counsel of the NASA installation having cognizance of the invention 

(d) Excluswe henses (1) A limited 

exclusive license may be granted on an 

invention available for such licensing 

provided that: 

(I) The Administrator has determined 

that (a) The invention has not been 

brought to practical application by a nonexcluisve licensee In the fields of use or in the geographical locations covered 

by the application for the exclusive l1­

cease, (b) practical application of the invention in the fields of use or geographical locations covered by the application 

for the exclusive license is not likely to 

be achieved expeditiously by the further 

funding of the invention by the Government or under a nonexclusive license re­ quested by any applicant pursuant to 

these regulations, and (c) the exclusive 

license wil provide the necessary incentive to the licensee to achieve the practical application of the invention; and 

0i) Either a notice pursuant to 

Vill 
PATENT LICENSING REGULATIONS 

1245 205 listing the invention as avail- hereby granted to the contractor report- (7) A statement that contains the 

able for licensing has been published in sigan invention made in the perform- applicant's best knowledge of the extent 

the FEDERAL REIsa for at least 9 ance of work under a contrast of NASA to which the Invention is being practiced months, or a patent covering the in- In the manner specified in section 305 (a) by private industry and the Government; vention has been issued for at least 6 (1) or (2) of the National Aeronautics (8) A description of applicant's capamonths However, a lnited exclusive It-e opment and maketmg reqred to cense may be granted prior to the periods and Space Act of 1958 as amended (42 himent and mpaktican ra equi theo 

specified above if the Administrator do- USC 2457(a) (1) or (2)), a revocable, achieve the practical application of the 

termnnes that the public interest will best nonexclusive, royalty-free license for the invention, including the geographical be served by the earlier grant of an ex- practice of such Invention, together with location where the applicant plans to 

clusive license the right to grant sublicenses of the same manufacture or use, in the case of a (2) The license may be granted for scope to the extent the contractor was process, the invention; and 

all or less than all fields of me of the legally obligated to do so at the time the (9) A statement indicating the miniinvention, and throughout the United contract was awarded Such license and mme ondesires States of America, its territories a n trct w- he to be licensed 

possessions; Puerto Rico, and the District nontransferable exept to t ()c) Contents of an apieationfor a of Columbia, or in any lesser geographic successor of that Part of the contractor's short-form nonexclusve Zense. An ap- Portion thereof business to which the invention pertains, phcation for a short-form nonexclusive 

(3) The exclusive eriod of the license (b) Misceaneous izceses Subject to license under § 1245 203(c) for a special 

shall be negotiated, but shall be for less any outstanding hcenses, nothing in this invention shall include. 

than the terminal portion of the patent, subpart 2 shall preclude the Admninstra- (1) Identification of invention for 

and shall be related to the period neces- tor from granting other licerses for in- which license is desired, includhng the 

sary to provide a reasonable incentive ventions, when he determines that do so NASA patent case number, patent alto invest the necessary risk capital would provide for an equitable distribu- plication serial number or patent num­ (4) The license shall require the I- tion of rights The following exemplify her, title and date, if known. censee to practice the invention within a circurstances wherein such licenses may (2) Name and address of company or period specified in the license and then be granted organization applying for license, and 

to achieve practical application of the (1) In consideration of the settlement (3) Name and address of representaInvention of an interference, tive of applicant to whom correspondence 

(5) The license shall require the HI- (2) In consideration of a release of a should be sent
 censee to expend a specified mnninum claim of infringement; or
 

sum of money and/or to take otherssped- i'n exchange for or as part of the § 1245.207 Application for enclusive
 fled actions, within indicated peid(s) consideration for a liense under ad- license. 

after the effective dale of the license, versely held patent(s) (a) Submsnon of application An apin an effort to achieve practical appll- § 1245.205 Publication of NASA raven plication for exclusive license under 

cation of the Invention tions available for license. § 1245 203(d) may be submitted to NASA 

at any time An application for exclusive (6l The license shall be subiect to at (a) A notice will be perodically Pub- license shall be addressed to the NASA 

least an irrevocable royalty-free nght of lished in the FEDERAL REGISTER hsting in- Assistant General Counsel for Patent 

the Government of the United States to ventions available for licensing Abstracts Matters 

practice and have practiced the rve- of the inventions will also be published (b) Contents of an appicattonfor ex­ tn throughout the world by or on be in the NASA Scientific and Technical elusive license In addition to the reqmre­ half of the Government of the Unied Aerospace Reports (STAR) and other ments set forth in § 1245 206(b), the ap- States and on behalf of any foreign NASA publicat~ons pllcatlbn for an exclusive license shall 

government pursuant to any existing or (b) Copies of pending patent applies- include: 

future treaty or agreement with the tions for inventions abstracted in STAR (1 Appucts status, if any, in any rnzte4 States ()ApiatssauI ni n 

(7) The license may reserve to the from the Natio One Or o more of the following categories. 

Administrator, NASA, under the follow- Technical Information Service, Spring- (1) Small business firm; 

ing circumstances, the right to require field, Va 22151. (W) Minority business enterprise; the granting of a sablicese to responsl- § 1245.206 Application for nonexelusive (in) Location In a surplus labor area; 

ble applicant(s) on terms that are con- license. 

sidered reasonable by the Administrator, (a) Subwission of application. An aP- area; and 

taking into consideration the current plication for nonexciusive license under av) Location i an area designed by 

royalty rates under similar patents ald J 1245 203(b) or a short-form nonexclu- (v) overnment ar desgne y 

other pertinent facts (1) TO the extent sive license for special inventions under the Government as economically dethat the invention is required for public § 1245 203(c) shall be addressed to the pressed use by Government regulation, or (it) as NASA Patent Counsel of the NASA in- (2) A statement indicating the time, 

may be necessary to fulfill health or stallation having cognizance over the expenditure, and other acts winch the 

safety needs, or (IiI) for other purposes NASA Invention for which a license Is applicant considers necessary to achieve 

stipulated in the license desired or to the NASA Assistant Gen- practical application of the invention, 

(8) The license shall be nontransfer- eral Counsel for Patent Matters and the applicant's offer to invest that 

able except to the successor of that part (b) Contents of an applicaton for sun and to perform such acts If the 

of the licensee's business to which the nonexclusive license. An application for license is granted, 

invention pertains nonexclusive license under § 1245 203(b) (3) A statement whether the appli­ (9) Subject to the approval of the shall include: cant would be willing to accept a license 

Adnnistrator, the licensee may grant (1) Identification of invention for for all or less than all fields of use of the 

sublicenses under the license Each sub- which license is desired, including the invention throughout the United States 

license granted by an exclusive licensee NASA patent case number, patent appb- of America, its territories and posses­ shall make reference to and shall pro- cation serial number of patent number, sions, Puerto Rico, and the District of 

vide that the subhcense is subject to the title and date. if known; Columbia, or in any lesser geographic 

terms of the exclusive license including (2) Name and address of the person, portion thereof. 

the rights retained by the Government company or organization applying for (4) A statement indicating the amount 

under the exclusive license A copy of license and whether the applicant is a of royalty fees or other consideration, if 

each sublicense shall be furnished to the U S citizen or a U S corpoation, any, the applicant would be willing to 

Administrator (3) Name and address of representa- pay the Government for the exclusive 

(10) The license may be subject to tive of applicant to whom correspond- license, and 

such other reservations as may be in the ence should be sent, (5) Any other facts which the appli­ public interest (4) Nature and type of applicant's cant believes to show it to be in the mterbusiness, ests of the United States of America for 

§ 1245 204 Otherlicenses. (5) Number of employees; the Administrator to grant an exclusive 

License to contractor. There i (6) Purpose for which license is license rather than a nonexclusive lI­ (a) odesired, 

Ix
 
PATENT LICENSING REGULATIONS 

cerise and that such an exclusive license any of the following together with sup- should be granted to the applicant porting documentation 

1245.208 1 cPnse Processing s applications for setting (1) A forth statement reasons fromwhy any person it would not be in the best Interest of the United 

(a) Intial reminew. Applications for States to grant the proposed exclusive nonexclusive and exclusive licenses un- license, or der f§ 1245 206 and 1245 207 will be te- (u) An application for a nonexclusive viewed by the Patent Counsel of the license under such invention, n accord- NASA Installation having cognizance for ance with § 1245 206(b), in which apph- the Invention and the NASA Assistant cant states that he has already brought General Counsel for Patent Matters, to orislikely to bring the invention to prae- determine the conformity and appro- tical application within a reasonable priateness of the application for license period- and the availability of the specific in- vention for the license requested The The Inventions and Contrbutions Board Assistant General Counsel for Patent shall, upon receipt of a written request Matters Will forward all applications for witin the 30 days' notice period, grant license conforming to §§ 1245 206(b) and an extension of 30 days for the submas1245 207(b) to the NASA Inventions and Sion of the documents designated above 

Contributions Board when the invention (2) Recomnmendation of Inventions 

Is available for consideration of the re- and Contnbutons Board Upon the ex- quested license Prior to forwarding ap- pirataon of the period required by sub- plications for exclusive licenses to the paragraph (1) of this paragraph, the Inventions and Contributions Board, no- Board shall review all written responses tice n writing will be given to each to the notice and shall med then recommend nonexolusive licensee for the specific m- to the Administrator whether to grant vention advising of the receipt of the the exclusive license as the Board 2m­ application for the exclusive license and tially recommended or whether a difproviding each nonexclusive licensee ferent form of license, if any, should with a 30-day period for submitting instead be granted either evidence that practical application (3) Grant of exclusive licenses The of the Invention has occurred or Is about Administrator shall review the Board's to occur or, an application for an exclu- recommendation and shall determine If sive license for the invention, the interest of the United States would 

(b) Recommendations of Inventions best be served by the grant of an ex- and Contributions Board The Inven- clusive license as recommended by the tions and Contributions Board shall, in Board If the Administrator determines 

accordance with the bas considerations to grant the exclusive license, the license se warded te rth by In§124522 Si 1245.20, will be granted upon the negotiation of the Assistant Gorvlcnsef the appropriate terms and conditions by Mastat 


for Patent Matters. Based upon the factsliesshlinud 


wrdd bathen eneal Counsel the Office of General Counsel 

presented to the Inventions and Contri- § 1245.209 Royalties and fees. 

buifons Board m the application and (a) Normally, a nonexclusive license 

any other facts m its possession, the in- for the practical application of an ­ ventions and Contributions Board shall vention granted to a US ctizen or recommend to the Administrator. (1) company will not require the payment of Whether a nonexclusive or exclusive royalties, however, NASA may require license should be granted, (2) the iden- other consideration. lity of the licensee, and (3) any special (b) An exclusive license for an inven-
 terms or conditions of the license tion may require the payment of royal-
 () Determiznation of Administrator ties, fees or other consideration when the and grant of nonerclusve lcenses The licensing circumstances and the basic Administrator shall review the recoin- considerations in § 1245 202, considered miendations of the Inventions and Con- together indicate that it is an the public tributions Board and shall determine interest to do so whether to grant the nonexclusive I1­ cense as recommended by the Board If § 1245.210 Reports, the dmiistato o gantrespectdetrmies the Administrator determines to grant A license shall require the licensee to the license, the license will be granted submit periodic reports of his efforts to 

upon the'negotlation of the appropriate work the invention The reports shall terms and conditions of the Office of contain information within his knowl- General Counsel. edge, or which he may acquire under (d) Determination of Adcinistrator normal business practice, pertaining to and grant of eaclustve licenses-(1) the commercial use that is being made Notice If the Administrator determines of the invention and such other refor- that the best interest of the Umted states nation which the Adniinstratoi may de- will be served by the granting of an ex- termine pertinent to the licensing pro­ clusive Icense in accordance with the gram and which is specified in the basic considerations set forth in license. 

§§ 1245202 and 1245 203, a notice shall be published in the annoncin FEDERAL REGISTER § 1245 2 1 Revocation of licenses togran theex-party theintet announcing the intent to grant the en- (a) Any license granted pursuant to clusive license, the identification of the § 1245 203 may be revoked, either in part invention, special terms or conditions of or in its entirety, by the Admimstrator the proposed license, and a statement if in his opinion the licensee at any time that NASA will grant the exclusive It- shall fail to use adequate efforts to bring cese unless within 30 days of the publi- to or achieve practical application of the cation of such notice the Inventions and invention in accordance with the terms Contributions Board receives in writing of the license, or if the licensee at any 

x 

tume shall default in making any report required by the license, or shall make any false of report, or shall commit any breach any covenant or agreement therein contained, and shall fail to remedy any 

such default, false report, or breach 

within 30 days after written notice, or if

the patent Is deemed unenforceable 

either by the Attorney General or a final 

decision of a U S. court 

(b) Any license granted pursuant to 

§ 1245 204(a) may be revoked, either in 

part or in its entirety, by the Adimstrator if in his opinion such revocation is 

necessary to achieve the earliest practi­ el application of the invention pursuant 

te a ppicatin o exivenicnse submtted in aPcordance with i 1245 207, 

orte in at an e h breach 

any covenant or agreement contained In 

the license, and shall fail to remedy any 

such breach within 30 days after written 

notice thereof (c) Before revoking any license 

any granted cause, Pursuant there wito be tis Ifurnshed Subpart to 2 the for

lense a written notice of nteton to 

revoke the icense, and tile licensee will w o a d rqust n weh to appeal and request a hearing Board on the question of revocation 

After a hearing, the Inventions and Contributons Board shall transmit to the 

Adnunstrator the record of proceedings, 

Its findings of fact and Its recommenda­ tion whether the license should be re­ voked either in part or in its entirety 

The Administrator shall review the rec­ omnendation mine of the Board and deter­ whether to revoke the license in 

part or in its entirety Revocation of a rvoaon fal license shall include revocation of all 

1245 212 A als. 

§ 1245 212 Appeals. Any person desiring to file an appeal pursuant to § 1245 211(c) shall address 

the appeal to Chairman, Inventions and 

Contributions Board Any person filing an appeal shall be afforded an oppor­ tunity to be heard before the Inv-ntions and Contributions Board, and to 

offer evidence In support of his appeal The procedures to be followed in any such 

matter shall be determined by the Ad­ mmistrator. The Board shall make findings of fact to disposition and recommendations of the appeal l The th

decision on the appeal shall be made by the Administrator, and such decision 

shall be final and conclusive, except on questions of law, unless determined by a court of competent Jurisdiction to have 

been fraudulent, or capricious, or arbitrary, or so grossly erroneous as neces­ sarly to imply bad faith, or not sup­ ported by substantial evidence 

§ 1245.213 Litigation An exclusive licensee shall be granted 

the right who to infringes sue at his the own rights expense any set forth 

in his license and covered by the licensed 

patent The licensee may loin the Goveiment, upon consent of the Attorney General, as a party complainant in such suit, but without expense to the Government and the licensee shall pay csts 

and any final judgment or decree that 

may be rendered against the Govern­
PATENT LICENSING REGULATIONS
 

ment in such suit The Government shall 

also have an absolute right to intervene 

In any such suit at its own exrense The 

licencee shall be obligated to rroznptly furnish to the Government. upon re- quest, copies of all pleadings and other 

paners fried in any such suit and of evidence adduced in proceedings relating to 

the licensed patent including, hut not 

limited to, negotiations for settlement 

and agreements settling eaims by a icensee based on the licensed patent, and 

all other books, documents, rarers. and 

FOREIGN 

records pertaining to such sult If, as a 

result of any such litigation the patent 

shall be declared invalid, the licensee 

shqll have the riqht to surrender his It- cause and be relieved from any further 

obligation thereunder 

§ 1245.214 Address of Communications. 

(a) Communications to the Assistant 

General Counsel for Patent Matters iq 

accordance with §§ 1245 206 and 1245 207 

and requests for information concerning licenses for NASA Inventions should be 

addressed to the Assistant General Counsel for Patent Matters. Code GP, National Aeronautics and Space Administration, Washington, DC.20546 

(b) Communications to the Inventions and Contributions Board in accordance with §§1245208. 1245 211, and 

1245 212 should be addressed to Chairman, Inventions and Contributions 

Board, National Aeronautics and Space 

Administration, Washington, D C 20546 

Efective date. The regulations set 

forth in this subpart- 2 are effective 

April 1, 1972 

Jn s C FtsTClER, Adimtstrator. 

PATENT LICENSING REGULATIONS
 

Selected NASA inventions are also available for licensing in countries other than the United States inaccordance 

with the NASA Foreign Patent Licensing Regulation (14 C F R 1245 4). a copy of which is available from any 

NASA Patent Counsel 

xi 
TABLE OF CONTENTS 

Section 1 - Abstracts 

AERONAUTICS 

Includes aeronautics (general), aerodynamics, air 

transportation and safety, aircraft communications 

and navigation, aircraft design, testing and performance, aircraft instrumentation, aircraft propulsion and 

power, aircraft stability and control, and research 

and support facilities (air) 

For related information see also Astronautics 

01 AERONAUTICS (GENERAL) N.A 

02 AERODYNAMICS 1 

Includes aerodynamics of bodies, combinations, 

wings, rotors, and control surfaces and internal 

flow in ducts and turbomachinery 

For related information seealso 34FulwdMechancs 

and Heat Transfer 

03 AIR TRANSPORTATION AND SAFETY N A. Inldspsegrad3ag i rnpr Includes passenger and cargo air transport operatons, and aircraft ac cdents 

For related information see also 16 Space 

Transportation and 85 Urban Technology and Transportation 

04 AIRCRAFT COMMUNICATIONS AND 

NAVIGATION 1

Includes digital and voice communication with 

aircraft, air navigation systems (satellite and ground 

based) and air traffic control 

For related information see also 17 Spacecraft 

Communications. Command and Tracking 

Communications 

and 32 

05 AIRCRAFT DESIGN, TESTING AND 

PERFORMANCE 

Includes aircraft simulation technology 

2 

For related information see also 18 Spacecraft 

Design, Testing and Performance and 39 Structural 

Mechanics 

06 AIRCRAFT INSTRUMENTATION 3 

Includes cockpit and cabin display devices, and 

flight instruments 

For related information see also 1.9 Spacecraft 

Instrumentation and 35 Instrumentation and Photography 

07 AIRCRAFT PROPULSION AND POWER 3 

Includes prime propulsion systems and systems 

components, e g. gas turbine engines and compressors, and on-board auxiliary power plants for aircraft 

For related information see also 20 Spacecraft 

Propulsion and Power. 28 Propellants and Fuels, 

and 44 Energy Production and Conversion 

08 AIRCRAFT STABILITY AND CONTROL N.A. 

Includes aircraft handling qualities, piloting, flight 

controls, and autopilots 

09 RESEARCH AND SUPPORT 

FACILITIES (AIR) 5 

Includes airports hangars and runways, aircraft 

repair and overhaul facilities, wind tunnels, shock 

tube facilities and engine test blocks 

For related information see also 14 Ground Support Systems and Facilities (Space) 

ASTRONAUTICS 

Includes astronautics (general), astrodynamics, 

ground support systems and facilities (space), launch 

vehicles and space vehicles, space transportation 

spacecraft communications, command and tracking, spacecraft design, testing and performance, spacecraft instrumentation, and spacecraft propulsion and 

power 

For related information see also Aeronautics 

12 ASTRONAUTICS (GENERAL) N A 

For extraterrestrial exploration see 91 Lunar and 

Planetary Exploration 

ASTRODYNAMICS 6 

Includes powered and free-flight trajectories, and o b t a d l u c i g d n m c 

orbit and launching dynamics 

14 GROUND SUPPORT SYSTEMS AND FACILITIES (SPACE) 7 

Includes launch complexes, research and production facilities ground support equipment, e g. mobile 

transporters and simulators 

For related information see also 09 Research and 

Support Facilities(Air) 

15 LAUNCH VEHICLES AND SPACE 

VEHICLES 7 

Includes boosters, manned orbital laboratories. 

reusable vehicles, and space stations 

16 SPACE TRANSPORTATION N A. 

Includes passenger and cargo space transportation 

e g, shuttle operations, and rescue techniques 

tion and 

For related 

Safety 

information 

and 85 

see 

Urban 

also 03 

Technology 

Air Transportaand 

Transportation 

17 SPACECRAFT COMMUNICATIONS. 

COMMAND AND TRACKING N A 

Includes telemetry, space communications networks. astronavigation, and radio blackout 

For related information see also 04 Aircraft 

18 

Communications 

tions 

SPACECRAFT 

and

DESIGN, 

Navigation

TESTING 

and 32 CommunicaAND 

PERFORMANCE N.A. 

Includes spacecraft thermal and environmental 

control, and attitude control 

For life support systems see 54 Man/System 

Technology and Life Support For related information 

see also 05 Aircraft Design. Testing and Performance 

and 39 Structural Mechanics 

Xii 
19 	 SPACECRAFT INSTRUMENTATION N A. 

For related information see also 06 Aircraft 

Instrumentation and 35 Instrumentation and 

Photography 

20 	 SPACECRAFT PROPULSION AND 

POWER 8 

Includes main propulsion systems and components. 

e g, rocket engines, and spacecraft auxiliary power 

sources 

For related information see also 07 Aircraft 

Propulsion and Power, 28 Propellants and Fuels, 

and 44 Energy Production and Conversion 

CHEMISTRY AND MATERIALS 

Includes chemistry and materials (general), 

composite materials, inorganic and physical chemistry, metallic materials, nonmetallic materials, and 

propellants and fuels 

23 	 CHEMISTRY AND MATERIALS 

(GENERAL) 	 9 

Includes biochemistry and organic chemistry 

24 	 COMPOSITE MATERIALS 9 

Includes laminates 

25 	 INORGANIC AND PHYSICAL 

CHEMISTRY 	 11 

Includes chemical analysis, e g, chromatography. 

combustion theory, electrochemistry, and photochemistry 

ics 

26 

For and 

METALLIC 

related Statistical information 

MATERIALS 

Physics see also 77 Thermodynam12 

Includes physical, chemical, and mechanical 

properties of metals, e g, corrosion, and metallurgy 

27 	 NONMETALLIC MATERIALS 12 

Includes physical, chemical, and mechanical 

properties of plastics, elastomers, lubricants polymers, textiles, adhesives, and ceramic materials 

28 PROPELLANTS AND FUELS 14 

Includes rocket propellants. igniters, and oxidizers, 

storage and handling, and aircraft fuels 

For 	 related information see also 07 Aircraft 

Propulsion and Power, 20 Spacecraft Propulsion 

and Power, and 44 Energy Production and Conversion 

ENGINEERING 

Includes engineering (general), communications, 

electronics and electrical engineering, fluid mechanics 

and heat transfer, instrumentation and photography, 

lasers and masers, mechanical engineering, quality 

assurance and reliability, and structural mechanics 

For related information see also Physics 

31 	 ENGINEERING (GENERAL) 15 

Includes vacuum technology control engineering, 

display engineering, and cryogenics 

32 COMMUNICATIONS 16 

Includes land and global communications cornmunications theory and optical communications 

For related information see also 04 Aircraft 

Communications and Navigation and 17 Spacecraft 

Communications, Command and Tracking 

33 	 ELECTRONICS AND ELECTRICAL 

ENGINEERING 21 

Includes test equipment and maintainability, 

components, eg, tunnel diodes and transistors, 

microminiaturization, and integrated circuitry 

For related information see also 60 Computer 

Operations and Hardware and 76 Solid-State 

Physics 

34 FLUID MECHANICS AND 

HEAT TRANSFER 30 

Includes boundary layers, hydrodynamics fluidics, 

mass transfer, and ablation cooling 

For related information see also 02 Aerodynamics 

and 77 Thermodynamics and Statistical Physics 

35 	 INSTRUMENTATION AND 

PHOTOGRAPHY 	 32 

Includes remote sensors, measuring instruments 

and gages, detectors, cameras and photographic supplies and holography 

For 	 aerial photography see 43 Earth Resources

36 	

mentation 

For related 

LASERS 

and 

information 

AND 

1-9 Spacecraft 

MASERS 

see also 

Instrumentation 

06 Aircraft Instru40 

Includes parametric amplifiers 

37 	 MECHANICAL ENGINEERING 42 

Includes auxiliary systems (non-power), machine 

elements and processes, and mechanical equipment 

38 	 QUALITY ASSURANCE AND 

RELIABILITY 	 .46 

Includes product sampling procedures and techniques, and quality control 

39 	 STRUCTURAL MECHANICS N A. 

Includes structural element design and weight 

analysis, fatigue, and thermal stress 

For applications see 05 Aircraft Design, Testing 

and Performance and 18 Spacecraft Design. Testing 

and Performance 

GEOSCIENCES 

Includes geosciences (general), earth resources, 

energy production and conversion, environment 

pollution, geophysics, meteorology and climatology, 

and oceanography 

For related information see also Space Sciences 

42 	 GEOSCIENCES (GENERAL) N.A. 

xiii 
43 EARTH RESOURCES 47 

Includes remote sensing of earth resources by 

aircraft and spacecraft: photogrammetry. and aerial 

photography 

For instrumentation see 35 Instrumentation and 

Photography. 

44 ENERGY PRODUCTION AND 

CONVERSION 47 

Includes specific energy conversion systems. a g, 

fuel cells and batteries, global sources of energy, 

fossil fuels, geophysical conversion, hydroelectric 

power, and wind power For related information see also 07 Aircraft 

Propulsion and Power, 20 Spacecraft Propulsion 

and Power, 28 Propellants and Fuels, and 85 

Urban Technology and Transportaton 

45 ENVIRONMENT POLLUTION 52 

Includes air, noise, thermal and water pollution, 

environment monitoring, and contamination control 

46 GEOPHYSICS N.A. 

Includes aeronomy, upper and lower atmosphere 

studies, ionospheric and magnetospheric physics, 

and geomagnetism For space radiation see 93 Space Radiation 

47 METEOROLOGY AND CLIMATOLOGY 53 

Includes weather forecasting and modification 

N A 

Includes biological, dynamic and physical oceanography, and marine resources 

48 OCEANOGRAPHY 

LIFE SCIENCES 

Includes life sciences (general), aerospace medicine, behavioral sciences, man/system technology and life support, and planetary biology 

N.A. 51 LIFE SCIENCES (GENERAL) 

Includes genetics 

52 AEROSPACE MEDICINE 53 

Includes physiological factors, biological effects 

of radiation, and weightlessness 

53 BEHAVIORAL SCIENCES N.A 

Includes psychological factors, individual and group 

behavior, crew training and evaluation, and psychiatric 

research 

54 MAN/SYSTEM TECHNOLOGY AND 

LIFE SUPPORT 57 

Includes human engineering, biotechnology, and 

space suits and protective clothing 

65 PLANETARY BIOLOGY N.A. 

Includes exobiology, and extraterrestrial life 

MATHEMATICAL AND COMPUTER 

SCIENCES 

Includes mathematical and computer sciences 

(general), computer operations and hardware, 

computer programming and software, computer 

systems, cybernetics, numerical analysis, statistics 

and probability, systems analysis, and theoretical 

mathematics 

59 MATHEMATICAL AND COMPUTER 

SCIENCES (GENERAL) 

60 COMPUTER OPERATIONS AND 

N.A 

HARDWARE 59 

Includes computer graphics and data processing 

For components see 33 Electronics and Electrical 

Engineering 

61 COMPUTER PROGRAMMING AND 

SOFTWARE N.A. 

Includes computer programs, routines, and 

algorithms 

62 COMPUTER SYSTEMS N.A 

Includes computer networks 

63 CYBERNETICS N A. 

Includes feedback and control theory For related information see also 54 Man/System 

Technology and Life Support 

64 NUMERICAL ANALYSIS N A. 

Includes iteration, difference equations, and 

numerical approximation 

65 STATISTICS AND PROBABILITY N A. 

Includes data sampling and smoothing, Monte 

Carlo method, and stochastic processes 

66 SYSTEMS ANALYSIS N.A. Includes mathematical modeling, network analysis, and operations research 

67 THEORETICAL MATHEMATICS N.A 

Includes topology and number theory 

PHYSICS 

Includes physics (general), acoustics, atomic and 

molecular physics, nuclear and high-energy physics. 

optics, plasma physics, solid-state physics, and 

thermodynamics and statistical physics 

For related information see also Engineering 

70 PHYSICS (GENERAL) N.A 

For geophysics see 46 Geophysics For astrophysics see 90 Astrophysics For solar physics see 92 

Solar Physics 

xIv 
62 

71 ACOUSTICS N.A. 83 ECONOMICS AND COST ANALYSIS N.A. 

Includes sound generation, transmission, and Includes cost effectiveness studies 

attenuation 

For noise pollution see 45 Environment Pollution 84 LAW AND POLITICAL SCIENCE N.A. 

Includes space law, international law, international 

72 ATOMIC AND MOLECULAR PHYSICS NA. cooperation, and patent policy 

Includes atomic structure and molecular spectra 85 URBAN TECHNOLOGY AND 

TRANSPORTATION 73 NUCLEAR AND HIGH-ENERGY Includes applications of space technology to urban PHYSICS 60 problems, technology transfer, technology assessIncludes elementary and nuclear particles, and mnt. and surface and mass transportation reactor theory For related information see 03 Air Transportation For space radiation see 93 Space Radiation and Safety, 16 Space Transportation, and 44 Energy 

74 OPTICS 60 Production and Conversion 

Includes light phenomena 

75 PLASMA PHYSICS N.A. SPACE SCIENCES 

Includes magnetohydrodynamics and plasma Includes space sciences (general), astronomy, fusion astrophysics lunar and planetary exploration, solar 

For ionospheric plasmas see 46 Geophysics For physics, and space radiation 

space plasmas see 90 Astrophysics For related information see also Geosciences 

76 SOLID-STATE PHYSICS N.A 

Includes superconductivity 88 SPACE SCIENCES (GENERAL) N.A. 

For related information see also 33 Electronics 

and Electrical Engineering and 36 Lasers and 89 ASTRONOMY N.A 

Masers Includes radio and gamma-ray astronomy, celestial 

77 THERMODYNAMICS AND mechanics, and astrometry 

STATISTICAL PHYSICS N A. 90 ASTROPHYSICS N.A 

Includes quantum mechanics, and Bose and Fermi Includes cosmology, and interstellar and instatistics terplanetary gases and dust 

For related information see also 26 Inorganic and 

Physical Chemistry and 34 Fluid Mechanics and 91 LUNAR AND PLANETARY 

Heat Transfer EXPLORATION N A. 

Includes planetology, and manned and unmanned SOCIAL SCIENCES flights 

Includes social sciences (general). administration For spacecraft design see 18 Spacecraft Design, 

and management, documentation and information Testing and Performance For space stations see 

science, economics and cost analysis, law and political 15 Launch Vehicles and Space Vehicles 

science, and urban technology and transportation 92 SOLAR PHYSICS N.A 

Includes solar activity, solar flares, solar radiation 80 SOCIAL SCIENCES (GENERAL) N A. and sunspots Includes educational matters 

93 SPACE RADIATION N A. 

81 ADMINISTRATION AND Includes cosmic radiation, and inner and outer 

MANAGEMENT N.A. earth's radiation belts 

Includes management planning and research For biological effects of radiation see 52Aerospace 

Medicine Fortheory see 73 Nuclear and High-Energy 82 DOCUMENTATION AND Physics 

INFORMATION SCIENCE N A. 

Includes information storage and retrieval technology, micrography, and library science GENERAL 

For computer documentation see 61 Computer Programming and Software 99 GENERAL N A. 

Note NA means that no abstracts were assigned to this category for this issue 

Section 2 - Indexes 

SUBJECT INDEX 

INVENTOR INDEX 

SOURCE INDEX 

NUMBER INDEX 

ACCESSION NUMBER INDEX 

Xv 
,.s5 ANDsp 

JULY 1977 (Supplement 11) 

NASA Patent Abstracts Bibliography 

A Semiannual Publication of the National Aeronautics and Space Administration 

02AERODYNAMICS 

Includes aerodynamics of bodies combinations wings 

rotors and control surfaces and internal flow in ducts 

and turbomachinery 

For related information see also 34 Fluid Mechanics 

and Heat Transfer 

N77-10001" National Aeronautics and Space Administration 

Langley Research Center Langley Station Va 

WINGTIP VORTEX DISSIPATOR FOR AIRCRAFT Patent 

James C Patterson Jr inventor (to NASA) Issued 5 Oct 1976 

6 p Filed 28 May 1974 Supersedes N74-26456 (12 - 16 

p 1855) 

(NASA-Case-LAR-11645-1 US-Patent-3 984.070 

US-Patent-Appl-SN-473973 US-Patent-Class-24-4-130, 

US-Patent-Class-244-113) Avail US Patent Office CSCL 

01A 

A means for attenuating the vortex created at aircraft wingtips 

which consists of a retractable planar surface transverse to the 

airstream and attached downstream of the wingtip which creates 

a positive pressure gradient just downstream from the wing is 

presented The positive pressure forces a break up ofthe rotational 

air flow of the vortex Official Gazette of the US Patent Office 

O4AIRCRAFT COMMUNICATIONS 

AND NAVIGATION 

Includes diggtal and voice commnication with aircraft 

air naigatin systems (satellte and ground based) and 

air traffic control 

For related information see also 17 Spacecraft Communications, Command, and Tracking and 32 

Communications 

N77-12031*# National Aeronautics. and Space Administration 

Ames Research Center Moffett Field Calif 

SPECTRALLY 1ALANCED CHROMATIC LANDING APPROACH LIGHTING SYSTEM Patent Application 

Wendell D Chase inventor (to NASA) Filed 10 Dec 1976 

21 p 

(NASA-Case-ARC-10990-1 US-Patent-Appl-SN-749420) Avail 

NTIS HC A02/MF A01 CSCL 17G 

A landing approach lighting svstem which corrects for the 

effects of chromatic aberration of the human eye to help prevent a pilot from making misjudgments leading to landings short of a runway threshold is described The system utilizes 

red warning lights to delineate the runway approach with additional 

blue lights juxtaposed with the red lights such that the red 

lights are chromatically balanced The red/blue point light sources result in the phenomenon that the red-lights appear in front of 

the blue lights with about one and one-half times the diameter 

of the blue To a pilot observing these lights along a qlide path 

those red lights directly below appear t6 be nearer than the 

blue lights For those lights farther away seen in perspective at 

oblique angles the red lights appear to be in a position closer 

to the pilot and hence appear to be above the corresponding blue lights NASA 

30 

is 

N77-19056* National Aeronautics and Space Admnistration 

Langley Research Center Langley Station. Va 

MAGNETIC HEADING REFERENCE Patent 

Howell D Garner, inventor (to NASA) Issued S Feb 1977 

12 p Filed 16 Oct 1975 $upersedes N76-25190 (14-17, 

p2152) Division of US Patent AppI SN-531647 filed 11 Dec 1974 US Patent--.943.76­

(NASA-Case-LAR-11387-2 US-Patent-'tOOG.631

US-Patent-Appt-SN-623156 US-Patent-Class-73-178R 

US-Patent-Class-33-36. US-Patent-App-SN-531647. 

US-Patent-3,943,763) Avail US Patent Office CSCL 17G 

This invention employs a magnetometer as amagnetic heading reference for a vehicle such as a small aircraft The magnetometer 
05 AIRCRAFT DESIGN, TESTING AND PERFORMANCE 

is mounted on a directional dial in the aircraft inthe vicinity of 

the pilot such that it is free to turn with the dial about the yaw 

axis of the aircraft The invention includes a circuit for generating 

a signal proportional to the northerly turning error produced in 

the magnetometer due to the vertical component of the earths 

magnetic field This generated signal is then subtracted from 

the output of the magnetometer to compensate for the northerly 

turning error Official Gazette of the U S Patent Office 

57 


55 

05AIRCRAFT DESIGN, TESTING 

AND PERFORMANCE 

Includes aircraft simulation technology 

For related information see also 18 Spacecraft Design. 

Testing and Performance and 39 Structural Mechanics 

N77-15027*# National Aeronautics and Space Administration 

Langley Research Center. Langley Station, Va 

AIRCRAFT DESIGN CONCEPT Patent Application 

Frank D Neuman (Boeing Co Seattle) Gottfried 0 Friebel (Boeing 

Co, Seattle), and Armand Sigalla. inventors (to NASA) (Boeing 

Co Seattle) Filed 15 Nov 1976 10 p Sponsored by NASA 

(NASA-Case-LAR-11852-1 US-Patent-App-SN-742035) Avail 

NTIS HC AO2/MF AO CSCL 01C 

The passenger cabin in commercial aircraft is divided into 

forward and aftcompartments allowing the wing carry-through


forardan af cmpatmetsallwigwngcary-hroghNTIS te 

structure to occupy space ordinarily reserved for passengers 

Benefits are a stronger smaller more weight-efficient wing 

structure, larger fuselage fineness ratio reduced weight and drag and increased fuel economy NASA 

N77-17029" National Aeronautics and Space Administration 

Ames Research Center Moffett Field Calif 

HINGELESS HELICOPTER ROTOR WITH IMPROVED 

STABILITY Patent 

Robert A Ormiston, William G Bousman, Dewey H Hodges, and David A Peters inventors (to NASA) Issued 28 Dec 1976 

11 p Filed 10 Oct 1974 Supersedes N74-34475 (12 - 24 

p 2899) 

(NASA-Case-ARC-10807-1, US-Patent-3 999 886, 

US-Patent-App-SN-513612 US-Patent-Class-416-104 

U S-Patent-Class-416-141 US-Patent-Class-416-138) Avail 

US Patent Office CSCL 01C Improved stability was provided in a hingeless helicopter 

rotor by inclining the principal elastic flexural axes and coupling 

pitching of the rotor blade with the lead-lag bending of the blade The primary elastic flex axes were inclined by constructing 

the blade of materials that display non-uniform stiffness and 

the specification described various cross section distributions and 

the resulting inclined flex axes Arrangements for varying the pitch of the- rotor blade In a predetermined relationship with 

lead-lag bending of the blade Ie bending of the blade in a 

plane parallel to its plane of rotation were constructed 

Official Gazette of the U S Patent Office 

"­

% 2 24

N77-18134ge Natonal Aeronautics and Space Admonstraton
 

Langley Research Center, Langley Station Va
 

AUTOMATICALLY LOCKABLE AXIALLY EXTENSIBLE 

STRUT Patent Application 

Frank Bonisch inventor (to NASA) (Silcorsky Aircraft) Filed 

7 Mar 1977 13 p Sponsored by NASA (NASA-Case-LAR-11900-1, US-Patent-Appi-SN-775239) Avail 

HCO 2/MF AOl CSCL 010 This invention relates to a low friction, axially extensible 

secondary struct link between a helicopter main rotor forte 

searyst Measurement mndthe hecopter e itomatoc- system and the helicopter frame which isautomatically lockable and capable of transmitting both tension and 

compression loads to the helicopter frame in the event of primary 

link failure NASA 

20 N 0 22

- 2 
07 AIRCRAFT PROPULSION AND POWER
 

6I the automatic mode of operation the wheels are automatically 06AIRCRAFT INSTRUMENTATION aimed with the runway and the alinement is indicated on the 

display panel of the aircraft In the manual mode of operation 

the wheels to aline them with the runway The Includes cockpit and cabin display dvices and flight the pilot turns 

instruments alinement or misalnement of the wheels is indicated on the 

NASA For related information see also 19 Spacecraft Instru- display panel 

mentation and 35 Instrumentation and Photography 3 

N77-140265 National Aeronautics and Space Administration 

Lewis Research Center, Cleveland, Ohio 

DUAL OUTPUT VARIABLE PITCH TURBOFAN ACTUATION 

SYSTEM Patent 

Robert H Griswold. Jr (GE, Cincinnati) and Carl L Broman, 

inventors (to NASA) (GE Cincinnati) Issued 30 Nov 1976 . 

10 p Filed 21 May 1975 Sponsored by NASA ' ,

L= (NASA-Case-LEW-12419-1. US-Patent-3 994 128 

US-Patent-Appl-SN-579375 US-Patent-Class-60-226R, '24 t23 

US-Patent-Class-416-160, US.Patent-Class-416-162. 

US-Patent-Class-416-165 US-Patent-Class-416-167, 

US-Patent-Class-416-153) Avail US Patent Office CSCL 

21E 

An improved actuating mechanism was provided for a gas 07AIRCRAFT PROPULSION AND 

turbine engine incorporating fan blades of the variable pitch vanety, 

the actuator adapted to rotate the individual fan blades within POWER 

apertures in an associated fan disc The actuator included means 

such as a pair of synchronizingring gears, one on each side of 

the blade shanks and adapted to engage pinions disposed thereon Includes prime propulsion systems and systems compoMeans were provided to impart rotation to the ring gears in nents e g gas turbine engines and compressors, and 

opposite directions to effect rotation of the blade shanks in on-board auxiliary power plants for aircraft 

response to a predetermined input signal In the event of system For related information see also 20 Spacecraft Propulsion 

failure a run-away actuator was prevented by an improved and Power. 28 Propellants and Fuels, and 44 Energy 

braking device which arrests the mechanism Production and Conversion 

Official Gazette of the U S Patent Office 

N77-13062"# National Aeronautics and Space Administration 

Lyndon B Johnson Space Center Houston Tex 

STATOR ROTOR TOOLS Patent Application 

Donald D Diamond, inventor (to NASA) (Serv-Air Inc) Filed 

8 Nov 1976 13 p Sponsored by NASA 

(NASA-Case-MSC-16000-1 US-Patent-AppI-SN-739915) Avail 

NTIS HCA02/MFA01 CSCL21E 

An apparatus and method for removing and reinserting base 

-W member segments in an arcuate slot was considered It is in an E©engine part where each base member separately includes blades 

5- or stators comprising holding the engine part in place It 

manipulates fingers on an arm into an interfitting abutting 

relationship with most of the blades on a base member and 

applies a torque force to the base of the blades to move a 

base member relative to such slot NASA 

N77-20098*# National Aeronautics and Space Administration 

Langley Research Center Langley Station Va 

CROSSWIND LANDING GEAR POSITION INDICATOR 

Patent Application 

Robert A Champme inventor (to NASA) Filed 23 Mar 1977 

8p 

(NASA-Case-LAR-11941-1 US-Patent-Appl-SN-780568) Avail 

NTIS HCA02/MFAOl CSCLO1D 

An instrument for use on an aircraft equipped with a cross 

wind landing gear system is described The instrument indicates 

on the pilots display panel of the aircraft the alinement or 

misalinement of the wheels of the aircraft relative to the runway 

and to the aircrafts centerline in a manner such that the flight 3, 

crew will not mistakenly adjust the~wheels in the wrong direction 

The wheels have automatic and manual modes of operation In 

3
 
07 AIRCRAFT PROPULSION AND POWER
 

N77-15036-# National Aeronautics and Space Administration N77-181S4* National Aeronautics and Space Administration 

Langley Research Center Langley Station Va Ames Research Center, Moffett Field Calif 

APPARATUS AND METHOD FOR JET NOISE SUPPRES- THE ENGINE AIR INTAKE SYSTEM Patent 

SION Patent Application Norman E Sorenen and Eldon A Latham, inventors (to NASA) 

Luclo Mestrello, inventor (to NASA) Filed 23 Dec 1976 Issued 15 Feb 1977 9 p Filed 12 Sep 1975 Supersedes 

17 p N75-31108 (13 - 22. p 2747) 

(NASA-Case-LAR-11903-1 US-Patent-Appl-SN-753971) Avail (NASA-Case-ARC-10761-1, US-Patent-4.007 891 

NTIS HC A02]MF A01 CSCL 20A US-Patent-AppI-SN-612899, US-Patent-Class-244-53B 

A method and apparatus are described for jet noise suppres- US-Patent-Class-137-15 1) Avail US Patent Office CSCL 

sion through control of the static pressure of the let and control 21E 

of the rate of entrainment of ambient fluid into the jet downstream An axisymmetric air intake system for a jet aircraft engine 

of the exhaust nozzle The momentum flux is regulated over an comprjsing a fixed cowl extending outwardly from the face of 

extended region of the jet affecting Reynolds stresses in the jet the engine a centerbodV coaxtally disposed within the cowl 

and the spreading angle of the let Static pressure is controlled and an actuator for axially displacing the centerbody within the 

through a long hollow porous nozzle plug centerbody which cowl was developed The cowl and centerbody define a main 

may be selectively vented to ambient conditions, connected to airflow passageway therebetween, the configuration of which is 

a vacuum source or supplied with fluids of various densities for changed by displacement of the centerbody The centerbody 

injection into the stream Additionally sound in the jot may be includes a forwardly-located closeable air inlet which communichanneled along the nozzle plug centerbody by injecting coolant cates with a centerbody auxiliary airflow passageway to provide 

such as a cryogenic fluid through the centerbody into the jet auxiliary aillow to the engine In one embodiment, a system 

NASA 	 for opening and closing the centerbody air inlet is provided by 

a dual-member centerbody the forward member of which may be displaced axially witi respect to the aft member 

Official Gazette of the U S Patent Office 

IC ,; 

N77-17059" National Aeronautics and Space Administration 

Lewis Research Center. Cleveland Ohio 

REVERSE PITCH FAN WITH DIVIDED SPLITTER Patent 

Leroy H Smith Jr inventor (to NASA) (GE Cincinnati Ohio) 

Issued 1 Feb 1977 8 p Filed 21 Apr 1975 Sponsored by 

NASA 

(NASA-Case-LEW-12760- 1, US-Patent-4 005 574 

US-Patent-AppI-SN-569925 US-Patent-Class-60-226A, 

US-Patent-Class-60-228) Avail US Patcnt Office CSCL 21E 

A guide vane arrangement is described for improving gas 

turbine performance in the reverse thrust mode This flow 

straightening method produces low losses in the fluid entering N7718160*# National Aeronautics and Space Administration 

a core engine dunng reverse thrust operations and allows large Lewrs Research Center Cleveland Ohio 

supercharging of the core engine during forward thrust APPARATUS AND METHOD FOR REDUCING THERMAL 

Official Gazette of the U S Patent Office 	 STRESS IN A TURBINE ROTOR Patent Application

J A Heller inventor (to NASA) Filed 4 Mar 1977 13 p 

(NASA-Case-LEW-12232-1, US-Patent-AppI-SN-776029) Avail 

NTIS HCA02/MF AO CSCL21E 

A gas turbine is provided wherein the thermal stresses in -.. - - the turbine rotor are reduced The rotor includes a central disc 

with a peripheral rim and a plurality of blades extending radially 

outwardly from the rim, and to reduce thermal stresses a duct 

arrangement is provided which selectively directs hot gases from 

the turbine combustor to the rim during the turbine start-up 

The hot gases from the combustor serve to heat the rim and 

thus decrease the start-up period necessary to bring the 

temperature profile of the rotor into the operating temperature 

range After the start-up period the duct arrangement is then 

used to direct cool gases from the turbine compressor to the 

4
 
09 RESEARCH AND SUPPORT FACILITIES (AIR) 

rim of the rotor in order to maintain a lower rotor equilibrium gas flow from the expansion section through the electrode 

temperature NASA sections Official Gazette of the U S Patent Office 

09 RESEARCH AND SUPPORT 

FACILITIES (AIR) 

Includes airports hangars and runways, aircraft repair 

shock tube facilities and overhaul facilities wind tunnels 

and engine test blocks 

For related information see also 14 Ground Support 

Systems and FacIaes (Space) 

N77-10071* National Aeronautics and Space Administration 

Pasadena Office Calif 

ANNULAR ARC ACCELERATOR SHOCK TUBE Patent 

Lewis P Leibowitz, inventor (to NASA) (JPL) Issued 5 Oct 

1976 9 p Filed 6 Nov 1974 Supersedes N75-11997 (13 ­

103 p 0261) Published under the second Trial Voluntary Protest 

Program as 8521 620 27 Jan 1976 Sponsored by NASA 

{NASA-Case-NPO-13628-1 US-Patent-S 983,749
 

US-Patent-Appl-SN-521620 US-Patent-Class-73-147) Avail
 

US Patent Office CSCL 14B
 

An annular arc accelerator shock tube employs a cold gas 

driver to flow a stream of gas from an expansion section through 

a high voltage electrode section to a test section, thus driving a 

Ishock wave infront of it A glow discharge detects the shock 

:wave and actuates a trigger generator which in turn fires 

spark-gap switches to discharge a bank of capacitors across a 

.centered cathode and an annular anode in tandem electrode 

isections The initial shock wave passes iiiough the anode section 

from the cathode section thereby depositing energy into the 

,flow gas without the necessity of any diaphragm opening in the 

,N77-12070*# National Aeronautics and Space Administration 

,Marshall Space Flight Center Huntsville Ala 

-GENERAL PURPOSE ROCKET FURNACE Patent Application 

Billy R Aldrich and William D Whitt inventors (to NASA) Filed 

30 Nov 1976 35 p 

(NASA-Case-MFS-23460-1 US-Patent-Appl-SN-746678) Avail 

NTIS HC A03/MF AO1 CSCL 148 

A multi-purpose furnace for space vehicles used for material 

processing experiments in an outer space environment The furnace 

contains three separate cavities designed to process samples of 

the widest possible range of materials and thermal requirements Each cavity contains three heating elements capable of independent functron under the direction of an automatic and 

programmable control system A heat removable mechanism is 

also provided for each cavity which operates in conjunction with 

the control system for establishing an isothermally heated cavity or a wide range of thermal gradients and cool down rates A 

monitoring system compatible with the rocket teleiiietry provides 

furnace performance and sample growth rate data throughout the processing cycle NASA 

N " 

a.- 'L R 

OR 

WA 

" 

.t 

I k . 

ORIFICE 

-

5
 
09 RESEARCH AND SUPPORT FACILITIES (AIR) 

N77-19076* National Aeronautics and Space Administration 

Ames Research Center Moffett Field Calif 

ROTATING LAUNCH DEVICE FOR A REMOTELY PILOTED 

AIRCRAFT Patent 

Thomas J Gregory, inventor (to NASA) Issued 2 Nov 1976 

6 p Filed 28 Aug 1975
 

(NASA-Case-ARC-1 0979-1, US-Patent-3 989 206, 


US-Patent-Appl-SN-608483 US-Patent-Class-244-63, 


US-Patent-Crass-124-6) Avail US Patent Office CSCL 01E 

A method and apparatus for launching a remotely piloted aircraft is disclosed, wherein the aircraft is revolved about a 

fixed pivot point until a predetermined speed is reached whereupon 

the vehicle is released from the launching apparatus The vehicle 

is attached to one end of a rotatable arm, the imbalance on the arm being counteracted by a counter weight attached to 

the opposite end The counter weight is released from the arm 

at the same time as the aircraft so as to avoid structural damage 

to the apparatus caused by rotation in the unbalanced condition 

The arm is oriented such that it rotates in a plane inclined 

obliquely to the local gravitational field of the launch site.0 

Official Gazette of the U S Patent Office 

$ 

N77-19077*# National Aeronautics and Space Administration 

Lyndon B Johnson Space Center. Houston Tex 

MULTI-PURPOSE WIND TUNNEL REACTION CONTROL 

MODEL BLOCK Patent Application Henry S Dresser (Rockwell Intern Corp Downey, Calif) and 

Joseph J Daileda inventors (to NASA) (Rockwell Intern Corp Downey Calif) Filed 11 Feb 1977 14 p (Contract NAS9-14000) 

(NASA-Case-MSC-1 9706- 1, US-Patent-Appl-SN-767911) Avail 

NTIS HCA02/MFAO1 CSCL 14B 

A reaction control system nozzle block is provided for testing 

the response characteristics of space vehicles to a variety of 

reaction control thruster configurations A pressurized air system is connected with the supply lines which lead to the individual 

jet nozzles Each supply line terminates in a compact cylindrical plenum volume axially perpendicular and adjacent to the throat 

of the jet nozzle The volume of the cylindrical plenum is sized 

to provide uniform thrust characteristics from each jet nozzle 

irrespective of the angle of approach of the supply line to the 

plenum NASA 

73 10 19 

9 1 1 

72 

17 / i 

35 & 

2 

V 

8-­

- 2. 

22 24 '0 7 

23_. 025 

26
 

13ASTRODYNAMICS 

Includes powered and free-flight trajectories and orbit 

and launching dynamics 

N77-11079*# National Aeronautics and Space Administration 

Marshall Space Flight Center Huntsville Ala 

TETHERLINE SYSTEM-FOR ORBITING SATELLITES Patent 

Application Charles C Rupp and Ralph R Kissel inventors (to NASA) Filed 

8 Nov 1976 11 p (NASA-Case-MFS-23564-1 US-Patent-Appl-SN-739908) Avail 

NTIS HC A02/MF AOl CSCL 22A A system for tethering one orbiting space vehicle to another 

in which a tetherline between the vehicles is controlled by a 

motorized reel is discussed The reel is controlled to deploy. retrieve or maintain a constant line length while effecting a 

stabilizing influence on the line This is accomplished by applying a tension to the line which takes into account the instantaneous length of the line rate of change of the length of the line and 

certain constants which vary depending upon the mode of 

operation deployment retrieval or station keeping NASA 

10 

is 

22 

i5 

0 

6
 
15 LAUNCH VEHICLES AND SPACE VEHICLES 

14GROUND SUPPORT SYSTEMS 15LAUNCH VEHICLES AND SPACE 

AND FACILITIES (SPACE) VEHICLES 

Includes launch complexes research and production Includes boosters manned orbital laboratories, reusable 

facilities ground support equipment mobile transporters vehicles and space stations 

and simulators 

For related information see also 09 Research Support
 

Faciihties (Air)
 

N77-18179* National Aeronautics and Space Administration
 

Marshall Space Flight Center Huntsville, Ala
 

SIMULATOR FOR PRACTICING THE MATING OF AN N77-10112 National Aeronautics and Space Administration 

OBSERVER-CONTROLLED OBJECT WITH A TARGET Patent Marshall Space Flight Center, Huntsville Ala

Application MULTIPLE IN-LINE DOCKING CAPABILITY FOR ROTATING 

Walter J Polstorff inventor (to NASA) Filed 25 Feb 1977 SPACE STATIONS Patent 

25 p Leon B Weaver and Claude D Pegden inventors (to NASA) 

(NASA-Case-MFS-23052-2, US-Patent-Appl-SN-772165) Avail Issued 10 Jul 1973 8 p Filed 12 Apr 1972 Supersedes 

NTIS HC A02/MF A01 CSCL 14B N72-25853 (10 - 16 p 2213) 

A servo controlled target replica and a surface bearing al (NASA-Case-MFS-20855-1. US-Patent-3 744 739 

computer generated line drawing of an object are individually. US-Patent-Appi-SN-243374 US-Patent-Class-244-SD) Avai 

viewed by separate television cameras This allowed a two- The invention comprises means for hard docking a number 

dimensional composite of the target replica and the object to ose veic i r ans so and inclue 

of space vehicles with a rotating space station and includes an be displayed on a monitor simulating what an observer would 

see through a window in a spacecraft The target replica is axially positioned dome on which are located two itermeshig 

coded along one self coordinate axis in such a way that the docking turrets Each turret carries multiple docking ports 

distance of an elemental area on the target along the axis is extending radially from the turret axis along which axis final 

capable of being remotely readout by a television camera The access to the space station is accomplished through the turret 

code is by way of a variation in color Ita wavelength) or in, hub The turrets intermesh and rotate about their hubs by means 

brightness (or a combination of color or brightness) NASA of a power source and suitable ring gears and bevel pinions to 

successively position one of the docking ports on the axis of 

rotation of the space station, while the remaining ports are 

positioned off center, and alternately rotated into such docking position to receive an additional space craft The arrangement 

allows docking in-line with the axis of rotation of the station 

and multiple vehicles to be thus docked and then placed in 

holding position Official Gazette of the U S Patent Office 

/ 

J7 
15 LAUNCH VEHICLES AND SPACE VEHICLES 

N77-10113 National Aeronautics and Space Administration 

Marshall Space Flight Center Huntsville, Ala 

ATTITUDE CONTROL SYSTEM Patent 

George L vonPragenau and Charles C Rupp inventors (to NASA) 

Issued 5 Oct 1976 5 p Filed 2 Oct 1974 Supersedes

N74-35096 (12 - 24 p 2977) Published under the second 

Trial Voluntary Protest Program as B 511,346 27 Jan 1976 

(NASA-Case-MFS-22787-1 US-Patent-3 984 072 

US-Patent-App!-SN-511346 US-Patent-Class-244-169 

U S-Patent-Class-244-3 21 US-Patent-Class-244-171) Avail 

US Patent Office CSCL 225 

An attitude control system is described in which angular 

rate signals are generated by rate gyros mounted closely adjacent 

to gimbaled engines at the rear of a vehicle Error signals 

representative of a commanded change in vehicle angle or attitude 

are obtained from a precision inertial platform located in the nose region of the vehicle The rate gyro derived signals dominate 

at high frequencies where dynamic effects become significant 

and platform signals dominate at low frequencies where precision 

signals are required for a steady vehicle attitude The blended 

signals are applied in a conventional manner to control the 

gimbaling of vehicle engines about control axes 

Official Gazette of the U S Patent Office 

K -U 

.mnrh-' .­ e-N77-17143"

20SPACECRAFT PROPULSION AND 

POWER 

Includes main propulsion systems and components eq 

rocket engines and spacecraft auxiliary power sources 

For related information see also 07 Aircraft Propulsion,' 

26 Propellants and Fuels and 44 Energy Production and 

Conversion 

N77-10148* National Aeronautics and Space Administration 

Lewis Research Center Cleveland Ohio 

ION BEAM THRUSTER SHIELD Patent 

John L Power inventor (to NASA) Issued 5 Oct 1976 8 p Filed 12 Sep 1975 Supersedes N75-32166 (13 - 23 

p 2885) (NASA-Case-LEW-12082-1 US-Patent-3 983 695 

US-Patent-Appl-SN-612964 US-Patent-Class-60-202. 

US-Patent-Class-313-361 US-Patent-Class-313-231 4 

US-Patent-Class-313-240 US-Patent-Class-315-111 3) Avail 

US Patent Office CSCL 21C 

An ion thruster beam shield is provided that comprises a 

cylindrical housing that extends downstream from the ion thruster 

and a pLurality of annular vanes which are spaced along the 

length of the housing and extend inwardly from the interior 

wall of the housing The shield intercepts and stops all charge 

exchange and beam ions, neutral propellant, and sputter products 

formed due to the interaction of beam and shield emanating 

from the ion thruster outside of a fixed conical angle from the 

thruster axis Further the shield prevents the sputter products 

formed during the opertotn of the engine from escaping the 

interior volume of the shield 

Official Gazette of the U S Patent Office 

National Aeronautics and Space Administration 

Langley Research Center, Langley Station, Va 

SOLID PROPELLANT ROCKET MOTOR AND METHOD OF 

MAKING SAME Patent 

Joseph G Thibodaux Jr and Donald J Lewis inventors (to NASA) Issued 4 Jan 1977 6 p Filed 16 Jan 1963 Division 

of US Patent App SN-54552 filed 7 Sep 1960 

US-Patent-3 193 83 

{NASA-Case-XLA-1349 US-Patent-4,000682 

US-Patent-AppI-SN-256493 US-Patent-Class-86-l R 

US-Patent-Class-86-20R US-Patent-Class-264-3HR 

US-Patent-Class- 102-49 3 US-Patent-Appl-SN-54552 US-Patent-3 193883) Avail US Patent Office CSCL 21H 

A method is described for making a solid propellant rocket 

motor having a specific concavity formed within the fuel charge

A mandrel with an aperature wider than that of the casing is 

inserted within the motor casing and a solidifiable propellant 

cast above the mandrel The mandrel is removed after the 

propellant is cured Official Gazette of the U S Patent Office 

2G
 2 

1 

49 _M"3 

,1 

Z4 

0t5za 

n ­

8 
24 COMPOSITE MATERIALS 

M77-20162* National Aeronautics and Space Administration analyzing trace amounts of a large number of organic volatles
 Lewis Research Center Cleveland Ohio existing in a gas sample Direct injection of the trapped volatiles
 

ANODE FOR ION THRUSTER Patent into a cryogenic percolum provides a sharply defined plug Bruce A Banks, inventor (to NASA) Issued 15 Mar 1977 Applications of the method include (1) analyzing the headspace 4 p Filed 8 Mar 1976 Supersedes N76-19227 (14 - 10 gas of body fluids and comparing a profile of the organic volatiles 

p 1228) with standard profiles for the detection and monitonng of disease (NASA-Case-LEW-12048-1. US-Patent-4011 719 (2) analyzing the headspace gas of foods and beverages and 

US-Patent-Appl-SN-65033 US-Patent-Class-6O-202 companng the profile with standard profiles to monitor and control US-Patent-Class-313-230 US-Patent-Class-313-231 3, flavor and aroma- and (3) analyses for determining the organic US-Patent-Class-313-360. US-Patent-Class-315-1 1 3 pollutants in air or water samples US-Patent-Class-315-111 6) Avail US Patent Office CSCL Official Gazette of the U S Patent Office 

21C
 

The anode is constructed of a woven mesh screen preferably 

of stainless steel wire cloth with a mesh size less than the 

intergrid gap or openings of the screen grid or accelerator 9nit 

systems of the on thruster The screen anode is sputter coate /­

with tantalum as a result of thruster operation Because of the /5­

fineness of the screen anode any spalled material from the 

tantalum coated anode is in such small dimensions that the /­

spalled pieces cannot interfere with the accelerator and screen grid systems and with the focusing therebetween /3 -

Official Gazette of the U S Patent Office 

~24 COMPOSITE MATERIALS 

]ncludes laminates 

N77-11119*# National Aeronautics and Space Administration 

Ames Research Center Moffett Field Calif 

INTUMESCENT COATING CONTAININ G 44%-

DINITROSULFANILIDE Patent Application 23 CHEMISTRY AND MATERIALS Paul M Sawko and Salvatore R Riccitlello inventors (to NASA) 

Filed 22 Oct 1976 26 p

(GENERAL) (NASA-Case-ARC-11042-1 US-Patent-Appi-SN-734902) Avail Includes biochemistry and organic chemistr NTIS HC A3/MF A01 CSCL 11D 

A compostion useful for nsulating substrates from heatis 

described a an intumescent coating which contains 44 

pnime-dmdirosulfamlide as the intumescent agent The principal constituents of the composition are the char or intumescent 

formig igredient 44 prme-dletrosulfanlhde and a polyme92c 

bider system comprising a chloroaated polyclefin a bsphenol A 

epoxy resiand a rubber-lke arne hardener The rmtuesaent 

eomposiedn can be applied by any satisfactor coatin techique N77-1"161* National Aeronautics and Space Admnistratnon to a desired substrate by brushing spraying, or the ikeOnce 

Lyndon Johnson Space Center Houston Tex hardened theo coatings dry to tough adherent lms with 

ANALYSIS Albern Mitks OF VOLATILE ORGAN IC COMPOUNDS Patent thicknesses preferably between 30 to 70 mils When these inventor (to NASA) (Houston Umv) Issued 18 Jan coatgs are heated or exposed to fire they expand or intu esce 1977 16 p Filed 12 Mar 1974 Sepersedes N74-19776 by a factor of 10 to 3 times the original coating thkness 

(12 - 11 p 1259) Sponsored by NASA and form a tough, unorm, nsulating char or residue which 

(NASA-Case-MSC-14428-1, US-Paten-4 003 257 protects the substrate from heat or flames The itumescent 

US-Patent-App-SN-450504 USPatent-Class-73-23 I charactenscs of the present tacomposttin are teated at a US-Patent-Class-23-23OR US-Patent-Cass-23-230B temperatur of aboul bedeg C The thermogravimeic analysis US-Patent-Class-23-230M US-Patent-Class-23-231 of the present orventxon and a prior aor intum are
 US-Patent-Class 23-232R US-Patent-Class-23-232C compared The stant mventoon tumesces ataower temperature
 

US-Patent-Class-23-254R. US-Patent-Oass-65-67 than the prior art compound The differential thermal analysis US-Patent-Class-55-74 US-Patent-Class-55-1g7 data show that the lower exothermic characteristic of the US-Patent-Class-73-61 10 Avail US Patent Office CSCL sulfamlide containing coating provides an overall improvement 07C in the basic thermal protection afforded to substrates compared An apparatus and method are described for reproducibly to other nitroaromatic amines The present invention exhibits 

9 
24 COMPOSITE MATERIALS 

improved environmental stability and intumesces at favorable 

temperatures NASA 

to 

A/ 

N77-15103#* National Aeronautics and Space Administration 

Langley Research Center Langley Station Va
 

COMPOSITE SANDWICH LATTICE STRUCTURE Patent
 

Application
 

Marvin 0 Rhodes and Martin M Mikulas Jr inventors (to NASA)
 

Filed 14 Sep 1976 26 p
 

(NASA-Case-Lar-1 1898-1 US-Patent-AppI-SN-723264) Avail
 

NTIS HC AO3/MF A0l CSCL-ilD 

A lattice type structural panel is described which utilizes 

the unidirectional character of filamentary epoxy impregnated 

- composites to produce stiff lightweight structural panels The 

panels ate suggested for use in constructing large area panels 

for space satellites NASA 

y - '-'-1-6 

I t IUS-Patent-Class-416-230) 

> 0 > 

1 0 1 

> Iobject 

; ,edge \P P 1> 

A { 2 1 z> 

[ 

N77-15105'# National Aeronautics and Space Administration
 

Marshall Space Flight Center Huntsville Ala
 

SPRAYABLE LOW DENSITY ABLATOR Patent Application 


Max H Sharpe William E Hill William G Simpson James a
 Carter Edwin L Brown Harry M King, Paul H Schuster and 

David D Webb inventors (to NASA) Filed 19 Jan 1977 

24 p
 

(NASA-Case-MFS-23506-1 US-pateot-Appl-$N-760809) Avail.
 

NTIS HCA02/MFA01 CSCL I1D 

10 

A sprayable. low density ablative composition is described 

The composition consists of (1) 100 parts by weight of a mixture 

of 25-65% by weight of phenolic microballoons 0-20% by weight 

of glass microballoons 4-10% by weight of glass fibers 25-45% 

by weight of an epoxy-modified polyurethane resin 2-4 by weight 

of a benetonite dispersing aid and 1-2% by weight of an alcohol 

activator for the bentonite NASA 

N77-19170 National Aeronautis and Space Admistration 

LewIs Research Center Cleveland Ohio 

LEADING EDGE PROTECTION FOR COMPOSITE BLADES 

Patent 

James W Brantley (GE Co Cincinnati) and,Thomas P Irwin 

inventors (to NASA) (GE Co Cincinnati) Issued 8 Feb 1977 

p Filed 17 Jul 1975 Sponsored by'NASA 

(NASA-Case-LFW-1 2550-I. US-Patent-4 008 999 

US-Patent-Appi-SN-596905 US-Patent-Class-416-224 

Avail US Patent Office CSCL 

11A laminated filament composite structure, such as an airfoil 

for use in an environment in which it is subjected to both foreign 

impact and bending is provided with improved leading 

protection At least one fine wire mesh layer is partially bonded within the composite structure along its neutral bending axis A portion of the wire mesh layer extends beyond the neutral 

bending axis and partially around the leading edge where it is 

bonded to the outer periphery of the primary composite structure 

The wire mesh is clad with a metal such as nickel to provide 

an improved leading edge protective device which is firmly 

anchored within the composite structure Also described is a novel method of constructing a composite airfoil so as to 

further minimize the possibility of losing the leading edge protective 

device due to delamination caused by impact and bending 

Official Gazette of the U S Patent Office 

4A 
_____________ 

N77-19171* National Aeronautics and Space Administration 

Lewis Research Center Cleveland, Ohio 

METHOD OF MAKING REINFORCED COMPOSITE STRUCTURE Patent 

Lee C McCandless (General Technologies Corp Reston Va) 

and Glenn E Weber inventors (to NASA) (General Technologies 

Corp Reston Va) Issued 2 Nov 1976 6 p Filed 19 Apr 

1974 Supersedes N76-16181 (14 - 07, p 0817) Sponsored 

by NASA 

(NASA-Case-LEW-12619-1 US-Patent-3989602, 

US-Patent-Appl-SN-462424 US-Patent-Class-204-9 

US-Patent-Class-29-527 2 US-Patent-Class-204-16 

US-Patent-Class-204-40) Avail US Patent Office CSCL 11D 

High strength nickel matrix structures are achieved by using 

reinforcing filament windings Metal matrix materials were 

electro-formed on and between the windings to form each new 

layer of the composite structure 

N77-19173# 

Ames Research 

LOW DENSITY 

COMPOSITES 

Official Gazette of the U S Patent Office 

National Aeronautics and Space Administration 

Center, Moffelt Field Calif 

BISMALEIMIDE-CARBON MICROBALLOON 

Patent Application 

Demetnius A Kourtides and John A Parker. inventors (to NASAl Fl3ed 16 Mar 1977 25 p 

(NASA-Case-ARC-i11040-1. US-Patent-AppI-SN-778195) Avail NTIS HC A02/MF AOl CSCL 11D 

130 kiorme u Imte NAS Composite laminate structures of glass cloth are reported 

that are preimpregnated with polybismaleimide resin and adhered 

to a polybismaleimide glass or aromatic polyamide ,paper 

honeycomb cell structure filled or partially filled, with a syntactic 

foam consisting of a mixture of bismaleimide resin and carbon 

microballoons The carbon microballoons are prepared by 

pyrolyzing pheiolic mniroballoons and subsequently bonded by 

usng,.a 2% bismaleimide solution The laminate structures are 

cured for two hours at 477 K and are adhered to the honeycomb 

bismaleimide adhesive using a pressure of 700kN/ sq m pressure 

at 450 K The laminate composite is then post-cured for two 

hours at 527 K to produce a composite laminate having a density 

in the range from about 95 kilograms per cubic meter to 

25 INORGANIC AND PHYSICAL CHEMISTRY 

Benjamin W Grunbaum, inventor(to NASA) (Calif Umv, Berkeley) 

Filed 24 Nov 1976 18 p Sponsored by NASA 

(NASA-Case-ARC-10991-1 US-Patent-AppI-SN-744574) Avail 

NTIS HC A02/MF AOl CSCL 07D 

A multiple sample applicator is described which coacts with 

a novel tank cover to permit an operator either to depress a 

single button thus causing multiple samples to be deposited on 

the gel or on the membrane simultaneously, or to depress one 

or more sample applicators separately by means of a separate 

button for each applicator Greater resolution is achieved by 

performing two dimensional migrations in a square gel tray First. 

the sample is pulled apart in a linear path by the electric current, 

and then the square gel tray is lifted and turned 90 deg so 

that the first migration is pulled apart from an orthogonal 

direction The square gel tray is held in place at two opposite 

corners by retainers on the temperature controlled plate These 

retainers insure an exact 90 deg change when the tray is 

repositioned NASA 

39 _2A J8 30 

p1pnsrdbyNS 16 

N77-17178#H National Aeronautics and Space Administration 

Ames Research Center Moffett Field, Calif 

PROCESS FOR PREPARING HIGHER OXIDES OF THE 

ALKALI AND ALKALINE EARTH METALS Patent Application 

Pasupati Sadhukhan (Occidental Res Corp) and Alexis T Bell, 

inventors (to NASA) (Calif Univ Berkeley) Filed 19 Jan 1977 

1 pnoe yNS 

130 meer tlorampetubl ASA(NASA-Case-ARC-i10992-1 US-Patent-AppI-SN-760810) Avail

91 IN R A I NDP Y IA 

- - NOR AND ANIC PHYSCALto

CHEMISTRY 

Includes chemical analysis. e g chromatography 

combustion theory electrochemistry, and photochemisFor related information see also 77 Thernmodynarmcs and Statistical Physics 

N77-I2157* National Aeronautics and Space Administration 

Ames Research Center Moffett Field Calif 

AUTOMATIC MULTIPLE-SAMPLE APPICATOR AND 

ELECTROPHORESIS APPARATUS Patent Appicatin 

NTIS HG A02/MF AOl CSCL 07D 

High purity inorganic higher oxides of the alkali and alkaline 

earth metals are prepared by subjecting the hydroxide of the 

metal to a radio frequency discharge sustained in oxygen The 

process is particularly adaptable to the production of high punty

potassium ,superoxide (K02) by subjecting potassium hydroxide 

glow discharge sustained in oxygen under the pressure of 

about 075 to 100 torr NASA 

"J ? . • " . J . 

2 

11 
25 INORGANICAND PHYSICAL CHEMISTRY 

N77-18238*# National Aeronautics and Space Administration 

Lewis Research Center Cleveland Ohio 

DEVICE FOR THE DETECTION Of PHENOL AND RELATED 

COMPOUNDS Patent Application 

Julian G Schiller (Pittsburgh UiLv ) and C C Liu inventors (to NASA) (Pittsburgh Umv) Filed 25 Feb 1977 22 p 

(Grant NsG-3002) 

(NASA-Case-fLEW-1Z513-1 US-Patent-AppI-SN-772167) Avail 

NTIS HC A02/MF A01 CSCL 07D 

A method is described which permits the selective oxidation 

and potentiometric detection of phenol and related compounds 

in an electrochemical cell An anode coated with a gel immobilized 

oxidative enzyme and a cathode are each placed in an electrolyte solution The potential of the cell-is measured by a potentiometer 

connected to the electrodes NASA 

-0 13- -9 

3 

26 METALLIC MATERIALS 

Includes physical chemical and mechanical properties 

of metals e g corrosion and metallurgy 

N77-20201* National Aeronautics and Space Administration 

Lewis Research Center Cleveland Ohio 8

ZIRCONIUM MODIFIED NICKEL-COPPER ALLOY Patent 

John D Whittenberger inventor (to NASA) Issued 15 Mar 

1977 5 p Filed 5 Jun 1975 Supersedes N75-26087 (13 ­

17 p 2086) (NASA-Case-LEW-12245-1 US-Patent-4012237, 

US-Patent-AppI-SN-584094 US-Patent-Class- 148-2 

US-Patent-Class-75-1170 US-Patent-Class- 148-12 7N, 

US-Patent-Class- 148-203 US-Patent-Class-148-32 5 

US-Patent-Class-14a-162) Avail US Patent Office CSCL 

11iF 

An improved material for use in a catalytic reactor which 

reduces nitrogen oxide from internal combustion engines is in 

the form of a zirconium-modified precipitation-strengthened 

mckel-copper alloy This material has a nominal composition of 

Ni-30 Cu-0 2 Zrand is characterized by improved high temperature 

mechanical properties Official Gazette of the U S Patent Office 

N77-21217*f National Aeronautics and Space Administration 

Lewis Research Center Cleveland Ohio 

REDUCED CHROMIUM STAINLESS STEEL ALLOYS Patent 

Application 

Joseph R Stephens and Charles A Barrett inventors (to NASA) 

Filed 15 Apr 1977 9 p 

(NASA-Case-LEW-12543-1, US-Patent-Appi-SN-798044) Avail 

NTIS HC A02/MF A01 CSCL 11F 

An austenitic stainless steel alloy is provided which contains 

reduced amounts of chromium as compared with stainless steels 

such as AISI Type 304 but whose oxidation resistance corrosion 

resistance strength and ductility are at least as good as those 

of such stainless steels In a preferred embodiment the alloy 

comprises by weight percent, iron-12 chromium-lO nickel-2 

aluminum-2 molybdenum-1 1 manganese-061 silicon-00S 

carbon In a second preferred embodiment the alloy comprises, 

by weight percent, iron-12 chromium-10 nmckel-2 65 silicon-1 1 

marganese-0O6 carbon NASA 

27 NONMETALLIC MATERIALS 

Includes physical chemical, and mechanical properties 

of plastics elastomers lubricants polymers textiles 

adhesives and ceramic materials 

N77-l0lS8t

# National Aeronautics and Space Administration 

Langley Research Center, Langley Station Va NOZZLE EXTRACTION PROCESS AND HAND LEMETER FOR 

MEASURING HANDLE Patent Application 

Vernon L Alley Jr and Austin P McHatton, inventors (to NASA) 

Piled 19 Oct 1976 29 p (NASA-Case-LAR-12147-1 US-Patent-Appl-SN-733825) Avail 

NTIS HC AO3IMF A01 CSCL 11E 

A method and apparatus for quantitatively measuring the 

handle of fabrics and other flexible materials is described Handle 

is that term used to refer to the dualities of drapability flexibility compressibility, foldability stretchability pliability, etc possessed 

by fabrics and other flexible materials The handle of a matenal 

sample is quantified by measuring the force required to draw 

the sample through an orifice and expressing the resultant 

extractive force as a function of test apparatus geometry and 

the amount of sample drawn through the orifice A quantative measure of handle is determined by a circular sectional convergent 

nozzle to be defined as handle modulus, for the sample in 

question Official Gazette of the U S Patent Office 

38 

28 

4.2 ­

3 5422 

34 32 -2 4 

12
 
27 NONMETALLIC MATERIALS 

N77-10201'# National Aeronautics and Space Administration N77-14262"# National Aeronautics and Space Administration 

Ames Research Center, Moffatt Field Calif Lyndon B Johnson Space Center Houston, Tex 

REACTION CURED GLASS AND GLASS COATINGS Patent PROCESS FOR PRODUCING FLAME RESISTANT POLYAApplication MIDES AND PRODUCTS PRODUCED THEREBY Patent 

Howard E Goldstein Daniel B Leiser (Stanford Uni, Calif), Application and Victor E Katvala inventors (to NASA) Filed 29 Oct 1976 Madeline S Toy (Science Applications Inc La Jolla. Calif) and 

19 p Roger S Stringham inventors (to NASA) (Science Applications, (NASA-Case-ARC-1 1051-1, US-Patent-AppI-SN-726910) Avail Inc La Jolla Calif) Filed 6 Dec 1976 16 p Sponsored by NTIS HC AO2/MF A01 CSCL 11 C NASA 

Reaction cured glass and glass coating are prepared by (NASA-Case-MSC-16074-1, US-Patent-Appl-SN-747674) Avail 

reacting a compound from the group of compounds consisting NTIS HC A02/MF A01 CSCL 07C 

of silicon tetraborde silicon hexaboride, other boron silicides A photochemical process for producing aromatic polyamides boron and mixtures thereof with a reactive glass frit composed with improved nonflammability characteristics is described The 

of a porous high silica borosilicate glass and boron oxide The aromatic polyamide substrata is contacted with a gaseous medium 

glassy composites are useful as coatings on low density fiberous containing a halooefinc material in a minor amount and in 

porous silica insulations used as heat shields and for articles inert diluent The aromatic substrate is irradiated with radiation 

such as reaction vessels that are subjected to high temperatures of sufficient energy to effect chemical bonding or grafting of 

with rapid heating and cooling and that require resistance to the halooefin to the substrate The resultant product consists of 

temperature and repeated thermal shock at temperatures up to an aromatic polyamide substrate with halocarbon groups 

about 1482 C (2700PF) NASA 	 chemically bound to the surface that has enhanced flame 

resistance in oxygen enriched environment without degradation of physical properties and appearance NASA 

0 INTERMETALLIC OR METALLIC. COMPOUNDS
 W BOHOSILICATE GLASS
 

N77-15192"f 
 National Aeronautics and Space Administration 

Langley Research Center Langley Station. Va 

HIGH SILICA BOROSILICATE GLASS POLYIMIDE ADHESIVES Patent Application Donald J Progar, Vernon L Bell and Terry L StClair inventors 

(to NASA) Filed 22 Oct 1976 14 p PORES (NASA-Case-LAR-12181-1 US-Patent-Appi-SN-734901) Avail tAN NTIS 	 HCA02/MFAO1 CSCL 11A 

A process of preparing aromatic polyamide-acids is described 

for use as adhesives by reacting an aromatic dianhydride to an 

approximately equimolar amount of an aromatic diamme in a water or lower alkanol miscible ether solvent The polyamide acids are converted to polyimides by heating to the temperature 

range of 200 - 300 C The polyimides are thermally stable and 

insoluble in ethers and other organic solvents NASA 

N77-13217* National Aeronautics and Space Administration 

Pasadena Office Calif 

HIGH TEMPERATURE OXIDATION RESISTANT CERMET 

COMPOSITIONS Patent 

Wayne M Phillips inventor (to NASA) (JPL) Issued 9 Nov 

1976 8 p Filed 20 Nov 1975 Supersedes N76-13293 (14-04, 

p 0433) Sponsored by NASA 

(NASA-Case-NPO-13666-1, US-Patent-3 990,860, 

US-Patent-Appi-SN-633877 US-Patent-Class-29-182 5) Avail 

US Patent Office CSCL 11B 

Cermet compositions are designed to provide high temperature resistant refractory coatings on stainless steel or molybdenum N77-17245* National Aeronautics and Space Administration 

substrates A ceramic mixture of chromium oxide and aluminum Ames Research Center, Moffett Field Calf 

oxide form a coating of chromium oxide as an oxidation barner AmesARArch PREPARATION Ct OF DIELECTRIC MoELET Field COATINGS Calif OF VARIABLE 

around the metal particles, to provide oxidation resistance for DIELECTRIC CONSTANT BY PLASMA POLYMERIZATION the metal particles 	 Author Patent Application 

Martin Hudis (Allis-Chalmers Mfg Co Milwaukee Wis) and 

Theordore Wydeven inventors (to NASA) Filed 11 Feb 1977 

19 p (NASA-Case-ARC-10892-2 US-Patent-Appl-SN-767912) Avail 

14 NTIS HCAO2/MFA01 CSCLI1C 

0A plasma polymerization process for the deposition of a 

dielectric polymer coating on a substrate is reported that reached 

the substrate in a closed reactor between two temperature 

controlled electrodes connected to a power supply The vacuum 

within the closed reactor caused a monomer gas or agas mixture 

of a monomer and diluent to flow into the reactor, generating d 

121 16! 	 iplasma between the electrodes The dielactric constant of the

1polymer I6-	 coating being deposited is controlled by regulating gas 

total and partial pressures electric field strength and frequency and current density A monomer such as a polar saturated or 

unsaturated nitrogen-containing compound or a monomer and diluent, such as a saturated or unsaturated aliphatic hydrocarbon 

13 
27 NONMETALLIC MATERIALS 

and nitrogen. is thus polymerized to form a dielectric coating of developed with a traniparent polycarbonate resin substrate 

varying dielectnc constant NASA coated with plasma polymerized vinytrmethoxysilane NASA 

I COATED 

'GO S00 '00 70 

WAVELENGTHn
 

N77-18265"# National Aeronautics and Space Administration 

Ames Research Center Moffett Field Calif 

A REVERSE OSMOSIS MEMBRANE OF HIGH UREA 

REJECTION PROPERTIES Patent Application 

Catherine C Johnson and Theodore Wydeven inventors (to NASA) 28 PROPELLANTS AND FUELS 

Filed 9 Jun 1976 21 p Includes rocket propellants, igniters and oxidizers 

(NASA-Case-ARC-10980-1 US-Patent-Appi-SN-694407) Avail storage and handling, and aircraft fuels 

NTIS IHC A02/MF A0l CSCL 11iD For related information see also 07 Aircraft Propulsion 

Reverse osmosis water purification polymeric membranes with and Power 20 Spacecraft Propulsion and Power, and 

high urea and salt rejection properties are reported An unsaturated 44 Energy Production and Conversion 

hydrocarbon monomer plasma and nitrogen gas were utilized 

for polymer deposition onto a substrate such that nitrogen was 

incorporated within the polymer in a Gnemnrcaily eombined form 

NASA 

N77-10213" National Aeronautics and Space Administration 

Langley Research Center Langley Station Va 

CASTING PROPELLANT IN ROCKET ENGINE Patent 

John E Roach (Thiokol Chemical Corp Bristol. Pa) and Stuart 

C Froehlhng inventors (to NASA) (Thiokol Chemical Corp Bristol, 

Pa) Issued 5 Oct 1976 8 p Filed 14 Nov 1962 Sponsored 

by NASA 

(NASA-Case-LAR-11995-1. US-Patent-3983780 

US-Patent-App-SN-23882 US-Patent-Class-86-lRA 

US-Patent-Class-102-99. US-Patent-Class-264-RI Avail US 

Patent Office CSCL 211 

A method is described for casting a solid propellant in the 

casing of a rocket engine having a continuous wall with a single 

opening which is formed by leaves of a material which melt at 

a temperature of the propellant and with curved edges concentric 

to the curvature of the spherical casing The leaves are inserted 

into the spherical casing through the -opening forming a core 

having a greater width than the width of the single opening 

and with curved peripheral edges The cast propellant forms a 

solid mass and then heated to melt the leaves and provide a 

central opening with radial projecting-flutes 

Official Gazette of the U S Patent Office 

N77-20256*# National Aeronautics and Space Administration 

Ames Research Center Moffett Field Calif 

OXYGEN POST-TREATMENT OF PLASTIC SURFACES _ 'F_ 

COATED WITH PLASMA POLYMERIZED SILICON- - k 

CONTAINING MONOMERS Patent Application 3I 

Theodore J Wydeven. Jr and John R Hollahan inventors (to 2 

-
 NASA) (Tegal Corp Richmond Calif) Filed 21 Mar 197713p,, ' 

13 p A-; ' 

(NASA-CaSe-ARC-1O0 5-2 US-Patent-App,-SN-779883) Avail 

NTIS HG A02/MyF AOl CSCI GL11G 

The abrasion resistance of plastic surfaces coated with 

polymerized organosilanes is significantly improved by posttreatment of the polymerized silane in an oxygen plasma For 

optical purposes the advantages of this post-treatment are 

14
 
31 ENGINEERING (GENERAL) 

N77-17258# National Aeronautics and Space Administration be very low As the helium exits the restrictor tube into the 

Pasadena Office, Calif cavity due to low pressure cavity it becomes an aerosol mixture 

ELECTROEXPLOSIVE DEVICE Patent Application of helium gas and superfluid, helium droplets at the desired 

Vincent J Menichelli inventor (to NASA) (JPU Filed 8 Nov temperature The latter form a thin layer or film of superflud 

1976 19 p helium on the inner side of the h~at exchanger wall and thereby 

(Contract NAS7-100) cool the device, which is attached to the wall to the desired 

(NASA-Case-NPO-13858-1 NASA-Case-NPO-13859-1 temperature Official Gazette of the U S Patent Office 

US-Patent-AppI-SN-740153) Avail NTIS HC A02/MF AO1 

CSCL 19A 

An improved electroexplosive device is described It consists 

of a header with contact pins sunk in a heat sink layer, and a 

bndge circuit placed across the contact pins Layers of igniter 

and output charges are placed over the heat sink layer and the 

bridge circuit The device provides a great reliability against 

inadvertent magnetic or electrostatic charge ignition I M 

22 Z
 WELD 	 t 

i 	 N77-15219*# National Aeronautics and Space Administration 

Pasadena Office Calif 

MULTISTATION REFRIGERATION SYSTEM Patent ApplicaIsl 	 ton 

Ervin R Wiebe inventor (to NASA) (JPL) Filed 8 Sep 1976 

1 - -26 	 13 p 

(Contract NAS7-100) 

(NASA-Case-NPO-13839-1 US-Patent-Appl-SN-712981) Avail 

NTIS HC AO2/MF AO1 CSCL 20D 

A closed cycle refrigeration (CCR) system is disclosed for 

providing cooling at different temperatures to different parts of a maser The CCR includes a first station for cooling the masers 

parts except the amplifier portion, to 4 5 K The CCR further 

includes means with a 30 K station for cooling the masers 

amplifier to 30 K and thereby increases the masers gain and/or 

bandwidth by a significant factor The means which provide the 

3 0 K cooling include a pressure regulator, heat exchangers an 31 ENGINEERING (GENERAL) expansion valve, and a vacuum pump which coact to cause 

helium provided from a compressor, to liquefy and thereafter 

Includes vacuum technology, control engineering - expand so as to vaporize The heat of vaporzation for the heliur 

display engineering and cryogenics is provided by the maser amplifier, which is thereby cooled tc 

3 0 K NASP 

N77-10229" National Aeronautics and Space Administration 	 -

Pasadena Office. Calif
 

CRYOSTAT SYSTEM FOR TEMPERATURES ON THE ORDER
 

OF 2 DEG K OR LESS Patent r-z
 Charles G Miller (JPL) and James B Stephens inventors (to 21- _
 

NASA) (JPL) Issued 5 Oct 1976 9 p Filed 24 Jul 1975 I -


Supersedes .N75-29277 (13 - 20 p 2507) Sponsored by
 

NASA I " "
 

(NASA-Case-NPO-13459-1 US-Patent-3 983 714, 
 z'_,3 

US-Patent-Appl-SN-598967 US-Patent-Class-62-217 ,j -' 

US-Patent-Class-62-514JT) Avail US Patent Office CSCL, --_ r 

20L 

A cryostat system for cooling a device to a temperature on 

the order of 2 K or less includes a dewar, in which helium, in ­

other than the superfluid state is stored Helium flows from the ,
 

dewar through a heat exchanger tube and a resp;
 

which controls the helium flow rate into
 

exchanger to whose outer waji b 'c It°o,
 

A rsuergulator valu c aRpt ~;a\ O>,< 0 ________________________ 

p e s r r 	 1 

15 
32 	COMMUNICATIONS 

32coMMUNICATIONS 

Includes land and global communications, communications theory and optical communications 

For related information see also 04Aircraft Communica. 

tons and Navigaton and 17 Spacecraft Communications, 

Command and Trackinq 

N77-10392* National Aeronautics and Space Administration 

Langley Research Center Langley Station, Va 

ANTI-MULTIPATH DIGITAL SIGNAL DETECTOR Patent 

John H Painter inventor (to NASA) Issued S Oct 1976 20 p 

Filed 25 Mar 1975 Continuation-in-part of abandoned US Patent 

App] SN-41 2379 filed 2 Nov 1973 published under the second 

Trial Voluntary Protest Program as B 561 764 27 Jan 1976 

(NASA-Case-LAR- 11827-1 US-Patent-3 984 634 

US-Patent-AppI-SN-561764 US-Patent-Crass- 178-88 

US-Patent-Class-325-323 US-Patent-Class-325-349 

US-Patent-Class-325-476 US-Patent-Class-235-150 1 

US-Patent-Class-235-16 US-Patent-Appl-SN-412379) Avail 

US 	Patent Office CSCL 17B 

A detector is described for radio signals which have been 

transmitted through a multipath medium The device operates 

in conjunction with the radio frequency portion of a receiver to 

detect digital signals which have been transmitted in known 

modulation formats The transmitted signal is constructed by 

assigning known and distinct modulation waveforms to a 

sequence of message symbols or digits The ba, ,digital message 

which the detector IS to reconstruct consists of a sequence of 

digits each lasting for a fixed time say T seconds, and each 

picked from an alphabet of arbitrary, but fixed size For example 

in a binary message the alphabet consists of the digits 0 and 

1 In a quartemaiy message the alphabet consists of the digits 

0 1 2 and S Official Gazette of the U S Patent Office 

N77-11269*# National Aeronautics and Space Administration
 

Pasadena Office, Calif 


THIN CONFORMAL ANTENNA ARRAY FOR MICROWAVE 


POWER CONVERSION Patent Application 


Richard M Dickinson inventor (to NASA) (JPL) Filed 6 Oct 


1976 16 p 


(Contract NAS7-100) 


(NASA-Case-NPO-13886-1 US-Patent-AppI-SN-730045) Avail 


NTIS HC A02/MF A01 CSCL 1023 

A structure of a circularly polarized thin conformal antenna 

array which may be mounted integrally with the skin of an aircraft employs microstrip elliptical elements and interconnecting 

feed lines spaced from a circuit ground plane by a thin dielectric 

layer The feed lines are impedance matched to the elliptical 

antenna elements by selecting a proper feedpoint inside the 

periphery of the elliptical antenna elements Diodes connected 

betweeh the feed lines and the ground plane rectify the 

.	 microwave power and rnicrostrip filters (low pass) connected in 

series with the feed lines provide dc current to a microstrip 

bus Low impedance matching strips are included between the 

elliptical elements and the rectifying and filtering elements 

NASA 

N77-12239* National Aeronautics and Space Administration 

Lyndon B Johnson Space Center Houston Tex 

DIFFERENTIAL PULSE CODE MODULATION Patent 

Calvin F Herman, inventor (to NASA) Issued 26 Oct 1976 

9 p Filed 29 Jan 1975 Supersedes N75-19480 (13 - 11, 

p 1231) 

(NASA-Case-MSC-12606-1 US-Patent-3 988 729 

US-Patent-Appl-SN-545283 U$-Patent-Class-340-347DD) 

Avail US Patent Office CSCL 17B 

A differential pulse code modulation (DPCM) encoding and 

decoding method is described along with an apparatus which-is 

capable of transmission with minimum bandwidth The apparatus is not affected by data transition density requires no direct current (DC) response of the transmission link and suffers from minimal 

ambiguity in resolution of the digital data 

Official Gazette of the U S Patent Office 

310 RZJ 40 56 62 c 8 2 58 MARK CODE 

34K 0\J Q 4 F C 60 

CLOCK 52 K
 

48 50 44
 

N77-12240' National Aeronautics and Space Administration 

Pasadena Office Calif 

SPACE COMMUNICATION SYSTEM FOR COMPRESSED 

DATAWITH A CONCATENATED REED-SOLOMON-VITERBI 

CODING CHANNEL Patent 

Robert F Rice (JPL) and Edward E Hilbert inventors (to NASA) 

(JPL) Issued26 Oct 1976 15 p Filed23Jun 1975 Supersedes 

N75-26207 (13 - 17 p 2100) Sponsored by NASA
 

(NASA-Case-NPO-13545-1. NASA-Case-NPO-13543-1
 

US-Patent-? 986 677 US-Patent-Appi-SN-589173
 

US-Patent-Class-325-41 US-Patent-Class-340-146 IAL.
 

U S-Patent-Class-340-146 1AQ US-Patent-Class-340-146 lAV)
 

Avail US Patent Office CSCL 17B
 

A space communication system incorporating a concatenated 

Reed Solomon Viterbi coding channel isdiscussed for transmitting 

,compressed and uncompressed data from a spacecraft to a data 

16 
32 COMMUNICATIONS 

processing center on Earth Imaging (and other) data are first frequency bands and EIRP's and compared to determine 

compressed into source blocks which are then coded by a Reed interference originating from the region NASA 

Solomon coder and interleaver followed by a convolutiopal 

encoder The received data is first decoded by a Viterb decoder 

followed by a Reed Solomon decoder and deinterleaver The 

output of the latter is the, decompressed based on the 

compression criteria used n'compressing the data in the 

spacecraft The decompressed data is processed to reconstruct 

an approximation of the original data-producing condition or images Official Gazette of the U S Patent Office 

,Tt..n,. \:......z 

N77-12248S# National Aeronautics and Space Administration 

Lyndon B Johnson Space Center Houston, Tex 

RECEIVING AND TRACKING PHASE MODULATED 

SIGNALS Patent Application 

Salvador Villarreal Stuart Donald Lenett and Herbert S 

Kobayashi, inventors (to NASA) Filed 2 Nov 1976 14 p (NASA-Case-MSC-16170-1 US-Patent-Appl-SN-737975) Avail 

NTIS HC AO2/MF A01 CSCL 17B 

A receiver is described for tracking and demodulating 

several types of phase modulated communications, either analog or digital data, for either residual carrier or suppressed carrier 

signal and for phase modulation or keying of two four or higher 

phase angles, from 0 deg through 360 deg A carrier component signal and a converted series sideband component signal 

are obtained from the incoming signal and summed to produce 

a carrier tracking signal, permitting more accurate tracking of 

the above types of phase modulated data NASA 

N77-12247*# National Aeronautics and Space Administration h-- V10 

Goddard Space Flight Center. Greenbelt, Md 

SYSTEMS AND METHODS FOR DETERMINING RADIO 

FREQUENCY INTERFERENCE Patent Application 

Klaus Johannsen (Hughes Aircraft Co, Los Angeles) Samuel 

Sabaroff (Hughes Aircraft Co Los Angeles) and Vance F Henry, 

inventors (to NASA) Filed 28 Oct 1976 52 p r 

(NASA-Case-GSC-12150-1. US-Patent-Appl-SN-736286) Avail I 

NTIS HC A04/MF A01 CSCL 178I l 

The presence frequency and amplitude of radio frequency 

interference superimposed on communication links originating 

from a terrestrial region and including a relay in a geostationary 

spacecraft are determined by pointing a narrow beam antenna 

on the satellite at the terrestnal region The level of noise radiated L 

from the region in a predetermined frequency band of interest 

to the antenna is measured at a terrestrial station that is usually 

remote from the region Calibrating radio signals having a plurality 

of predetermined EIRPs and frequencies in the spectrum are 

transmitted from the region through the spacecraft narrow beam 

,antenna back to the station where the levels of the received 

calibrating signals are separately measured for each of the 

17 

5",
 
32 COMMUNICATIONS 

jN77-14292* National Aeronautics and Space Administration 


,Langley Research Center Langley Station Va 

PHASE MODULATING WITH ODD AND EVEN FINITE 

POWER SERIES OF A MODULATING SIGNAL Patent 

Chase P Hearn Richard H Couch and Lewis P Wilson inventors 

(to NASA) (LTV Aerospace Corp, Hampton Va) Issued 7 Dec 

,1976 8 p Filed 29 Sep 1975 Supersedes N76-10356 

(14 - 01 p 0048) 

(NASA-Case-LAR-11607-1. US-Patent-3 996 532 

US-Patent-Appl-SN-617895 US-Patent-Class-332-22, 

US-Patent-Class-325-145 US-Patent-Class-332-23R) Avail US 

Patent Office CSCL 17B 

Method and apparatus is presented for producing a phasemodulated waveform having a high degree of linearity between 

the modulating signal and the phase of the modulated carrier 

signal Two signals representing finite odd and even power series 

transformations of the modulating signal are produced and 

multiplied with two quadrature components of the input carrier 

signal, respectively One of the multiplied t-ignals is subtracted 

from the other and the resulting signal is hard-limited to produce a phase-modulated output signal The means for producing the 

two signals representing the odd and even power series of the 

modutating signal includes means for varying the coefficients of 

the two power series By means of an existing computer program the coefficients of the two power series are selected such that 

there is an extremely high degree of linearity between the 

modulating signal and the phase of the modulated arrier 

signal Official Gazette of the U S Patent Office 

N77-15233"# National Aeronautics and Space Administration 

Lyndon B Johnson Space-Center Houston Tex 

DUAL FREQUENCY CIRCULARLY POLARIZED MICROWAVE INTEGRATED ANTENNA Patent Application I-Ping Yu inventor (to NASA) (Lockheed, Houston Tex) Filed 

15 Dec 1976 20 p 

(Contract NAS9-12200) (NASA-Case-MSC-16100-1. US-Patent-Appl-SN-750796) Avail 

NTIS HC AO2/MF A01 CSCL 17B 

An antenna assembly operable in two frequency ranges is 

provided by using microstrip construction to obtain a first planar antenna element circumscribed by a second planar antenna 

element each fitted with appropriate phase shifters The geometry 

of the two antenna elements is utilized to couple the antenna 

assembly with selected impedance matching NASA
 

-' /0 

/
 

2 . 

14
 

At 

N77-15238*# National Aeronautics and Space Administration 

Langley Research Center Langley Station, Va 

A CW ULTRASONIC BOLT TENSIONING MONITOR Patent 

Application 

Joseph S Heyman. inventor (to NASA) Filed 23 Dec 1976 

22 p (NASA-Case-LAR-12016-1, US-Patent-AppI-SN-754066 Avail 

NTIS HC A02/MF A01 CSCL 20N 

This invention is a CW ultrasonic device for measuring 

frequency shifts of the peak of a mechanical resonance in a body One application of the device is measuring the strain in a 

bolt It also has other applications such as measuring the 

thickness, the depth of a flaw the elongation and changes in 

velocity of sound in a body The body is connected by means of a CW transducer, to electncal circuit means including a narrow band RF amplifier to form a closed loop feedback marginal oscillator that frequency locks the device to the peak of a mechanical resonance in the body When the frequency of this 

peak changes because of a physical change in the body, the frequency of the oscillator changes The device includes an 

automatic frequency resonant peak tracker that produces avoltage that is related to a change in frequency of the oscillator This 

voltage is applied to the HF amplifier to change the center of 

its frequency band to include the frequency of the peak and is a measure of the frequency shift NASA 

-


1­

18
 
32 COMMUNICATIONS
 

N77-17325*# National Aeronautics and Space Administration between the input and the output circuits 

Pasadena Office, Calif Official Gazette of the U S Patent Office 

SURFACE ROUGHNESS MEASURING SYSTEM Patent 

Application 

Atul Jam, inventor (to NASA) (JPL) Filed 24 Nov 1976 

42 p 

(Contract NAS7-100) 

(NASA-Case-NPO-13862-1 US-Patent-Appl-SN-744577) Avail LOAD 

NTIS HC AO3/MF AO1 CSCL 171 n 42 30 

The technique is based upon processing a signal obtained 

from a synthetic aperture imaging radar for correlation of different 2 as, 

images of ocean waves, or peaks of rough terrain utilizing means ­

for compressing the radar signal over different widths of the 12 

available chirp or Doppler bandwidths and means for cross 21 rI 

correlating one of these images with each of the others The 

measured height is the slope of the cross correlation value 

determined to the spacing value used Both electronic and optical 

radar signal data compressors and cross-correlations are disclosed 

for implementation of the system Author 

N771920- National Aeronautics and Space Administration 

Lyndon B Johnson Space Center Houston, Tex 

BIT ERROR RATE MEASUREMENT ABOVE AND BELOW 

BIT RATE TRACKING THRESHOLD Patent Application 

Herbert S Kobayashi Joe Fowler and William Kurple Inventors 

" (to NASA) (Lockheed Electronics Co Houston -ex) Filed 2 Mar 

pzlt,I1977 	 16 p (Contract NAS9-12200) x = 	 (NASA-Case-MSC-12743-1, US-Patent-Appl-SN-765167) Avail 

NTIS HC A02/MF A01 CSCL 17B 

Bit error rate is measured by sending a pseudorandom noise 

(PRN) code test signal simulating digital data through digital 

equipment to be tested An incoming signal representing the 

response of the equipment being tested, together with any added 

noise is received and tracked by being compared with a locally 

generated PRN code Once the locally generated PRN code 

matches the incoming signal a tracking lock is obtained The 

incoming signal is then integrated and compared bit-by-bit against 

the locally generated PRN code and differences between bits 

being compared are counted as bit errors NASA 

N77-18307" National Aeronautics and Space Administration
 

Marshall Space Flight Center Huntsville Ala I .
 NOTCH FILTER Patent '460ICR WORD 


Glenn B Shelton inventor (to NASA) (Sperry Hand Corp I i Zf, i 42
 W Znh 


Huntsville Ala) Issued 8 Feb 1977 5 p Filed 14 Apr 1976 I 5zs
 

Supersedes N76-22462 (14 - 13 p 1653) Sponsored by 

NASA I SR ­

(NASA- Case-M FS-23303-1 US-Patent-4 007 434 

US-Patent-Appl-SN-676957 US-Patent-Class-333-75, -S 

US-Patent-Class-333-70R, US-Patent-Class-333-76 562 

US-Patent-Class-333-82B) Avail US Patent Office CSCL 

09C 

A notch filter for the selective ditenuaion of a narrow band 

of frequencies out of a larger band was developed A helical 

resonator is connected to an input circuit and an output circuit 

through discrete and equal capacitors and a resistor is connecte, 

19
 
32 COMMUNICATIONS 

N77-20289* National Aeronautics and Space Administration. having a magnitude indicative of the phase difference between 

Pasadena Office Calif the input signal and the phase controlled wave NASA 

MULTIPLE RATE DIGITAL COMMAND DETECTION 

SYSTEM WITH RANGE CLEAN-UP CAPABILITY Patent 

James R Lesh (JPL) and Stanley A Butman inventors (to NASA) 

(JPL) Issued 15 Mar 1977 14 p Filed 17 Feb 1976 

Supersedes N76-18826 (14 - 09 p 1174) Sponsored by 1 

NASA 

(NASA-Case-NPO-13763-1 US-Patent-4 012,696 

US-Patent-Appl-SN-658449 US-Patent-Class-325-4 

US-Patent-Class-343-6 5R US-Patent-Class-343-6 BR 

US-Patent-Class-343-100ST) 17B Avail US Patent Office CSCL =,; _ - A multi-rate digital command system is disclosed which uses -

the composite signal of a mu-type ranging system as a subcarrier 

to transmit range codes and data from a station to a receiver 

where the range codes are sequentially phase modulated on a subcarrier of frequency by one of its own subharmonics and 

data is phase modulated on a selected ranging component A 

range cleanup loop in a spacecraft locks the phase of a locally ]­

generated reference component to a received ranging component 

and retransmits the component to a ground station When the 

inverse phase of a ranging component is received and detected, 

the cleanup loop is modified to demodulate phase modulated 

command symbols while continuing tracking the same ranging 

component The command symbol rate is coherently related to 

the ranging signal component bit rate 

Official Gazette of the U S Patent Office 

N77-21267* National Aeronautics and Space Administration Langley Research Center Langley Station Va 

METHOD OF LOCATING PERSONS IN DISTRESS Patent , = , . Wilford Eugene Sivertson Jr inventor (to NASA) Issued 19 Apr 

, ± 1977 5 p Filed 27 Feb 1976 Supersedes N76-18315 

.... (14 - 09, p 1107) (NASA-Case-LAR-1 I 1390-1 US-Patent-4019 179 "- ° " US-Patent-Appi-SN-662176, US-Patent-Class-343-SMM 

US-Patent-Class-340-SH US-Patent-Class-343-SCM, 

US-Patent-Class-343-iRB) Avail US Patent Office CSCL 171 

§='-radi.frA method for locating any person in distress in a selected area on the surface of the earth who has deployed passive , ,,, radio frequency (RF) reflectors in a predetermined arrangement 

is analyzed A first transparency is made in the spatial frequency S.domain of an image of sad predetermined arrangement of said 

RF reflectors The said selected area of the surface of the earth 

is scanned by means of a side-looking radar, on board a satellite or aircraft to produce radar images Second transparencies in 

the conventional image domain are produced from the radar 

images It is then determined from the first and second 

transparencies by means of complex spatial filtenng 

Official Gazette of the U S Patent Office 

12 

N77-20299*# National Aeronautics and Space Administration 

Goddard Inst for, Space Studies New York 13 

VERY NARROW BAND WIDTH RECEIVER Patent Applicatan 

Paris H Wiley (Va Polytechnic Inst and State Univ I and Eugene 

A Manus inventors (to NASA) (Va Polytechnic Inst and State 

Univ) Filed 4 Mar 1977 18 p 

(NASA-Case-GSC-12142-1 US-Patent-Appt-SN-774553) Avail 

NTIS HCA02/MFA01 CSCL17B 

A very narrow band width receiver substantially unrespon­ sive to noise imposed on a very low level signal is disclosed It 14 

compnses a switch responsive to a replica of tthe signal and a reference wave having the same frequency as a carner for the 

signal applied to the switch the switch passes the signal only A-4 

during one half of each cycle of the reference wave A low 

pass filter including an operational amplifier responds to the 

input signal as passed by the switch to derive a DC signal 

20
 
33 ELECTRONICS AND ELECTRICAL ENGINEERING
 

spacecraft is traveling by directing charged particles into the 33 ELECTRONICS AND ELECTRICAL plasma from the spacecraft surface The induced potential occurs 

ENGINEERING nresponse to bombardment of the spacecraft surface by ambient 

charged particles which may be negative or positive The charged particles directed into the plasma from the surface have the 

Includes test equipment and maintainability compo- same polarity as the induced potential to provide the neutralization 

nents e g tunnel diodes and transistors mtcrominiaturiza- The invention can be utilized to maintain different electrically tion and integrated circuitry isolated segments of a spacecraft surface at the same potential 

For related information see also 60 Computer Operations to prevent electric discharges between the different parts and 

and Hardware and 76 Sohd-State Physics thereby protect electric circuits within the spacecraft 

Official Gazette of the V $ Patent Office 

N77-10428 National Aeronautics and Space Administration 

Pasadena Office Calif 

THE dc-TO-dc CONVERTERS EMPLOYING STAGGEREDPHASE POWER SWITCHES WITH TWO-LOOP CONTROL 

Patent 

Gene W Wester inventor (to NASA) (JPL Issued 5 Oct 1976 

7 p Filed 17 Dec 1974 Supersedes N75-15876 (13 - 07 

p 0764) Published under the second Trial Voluntary Protest 

Program as B 533 734 27 Jan 1976 Sponsored by NASA 

(NASA-Case-NPO-13512-1 US-Patent-3,984 799 

US-Patent-Appl-SN-533734, US-Patent-Class-321-2. 

US-Patent-Class-321-19 US-Patent-Class-323-17 , 7 . 17 

US-Patent-Class-323-22T US-Patent-Class-323-23 'ar27 2-o 

US-Patent-Class-323-DIG 1) Avail US Patent Office CSCL -. 

A switched inductor voltage is coupled to a sense winding 

in each phase and all sense windings are connected in series " 7 

to one of two feedback loops to provide a signal that indicates Kwhen one of the power switches is on as the principal determinant 

of switching instants A sequencer is triggered each time a pulse 10 

generator is triggered to turn on a different power switch in ­

sequence at each switching instant 

Official Gazette of the U S Patent Office - to t - ' " 

-2r 

N77-11296"# National Aeronautics and Space Administration 

Hugh L Dryden Flht Research Center Edwards Calif 

WINDOW COMPARATOR Patent Application James M Black inventor Ito NASA) Filed 2 Nov 1976 16 p 

N77-10}429' National Aeronautics and Space Adminitration {NASA-Case-FRC-1O090-1 USI-Patent-Appl-SN-737974) Avail 

Goddard Space Flight Center Greenbelt Mil NTIS HC AO2/MF AO! CSCL 09C 

METHOD AND APPARATUS FOR NEUTRALIZING PO- A comparator comprisig two operational amplifiers is 

TENTIALS INDUCED ON SPACECRAFT SURFACES describqd The first has two feedback circuits each tiaving a 

Patent diode donnected to the amplifier output and poled for forward 

Robert E Hunter inventor (to NASA) Issued 5 Oct 1976 6 It current conduction of opposite polarity, such that one diode 

Filed 11 Jul 1975, Supersedes N75-27265 (13 - 18, conducts and then switches off while the other is held off and 

p 2239) then conducts when the sign of the algebraic diffierence switches 

(NASA-Case-GSC-11963-1 US-Patent-3 984 730 Differenti input terminals of the second operational amplifier 

US-Patent-Appl-SN-995197 US-Patent-Class-317-2D are connected to the separate feedback circuit$ of %he first 

;US-Patent-Class-244-1A, U6-Patcnt-Class-244-42CG, operational amplifier A selected window-width voltage is 

US-Patent-Class-324-7?.) Avail US Patent Office CSCL 09C connected through a coupling resistor to one of the input terminals 

A potential induced on the surface of an orbiting spacecraft of the second operational amplifier to determine when the 

is neutralized to the potential of a plasma. through which the algebraic difference of the input-signal and the set-point voltage 

21
 
33 ELECTRONICSAND ELECTRICAL ENGINEERING
 

has exceeded a predetermined tolerance after that difference 

has changed signs Author 

.VM 

12 


is 


-Vr~f 13,I 

00NTFT
 

N77-13315- National Aeronautrcs and Space Administration 

!Pasadena Office Calif 

FREQUENCY DISCRIMINATOR AND PHASE DETECTOR 

CIRCUIT Patent 

Robert Bruce Crow inventor (to NASA) IJPL -issued 31 Jul 

1973 10 p Filed 3 May 1971 Sponsored by NASA 

(NASA-Case-NPO-11515-1 US-Patent-3 750 035 

US-Patent-Appl-SN-139596 US-Patent-Class-328-133, US-Patent-Class-307-295 US-Patent-Class-307-233) Avail US 

Patent Office CSCL 09A 

Frequency discriminator and phase detector circuits are disclosed each having two flip-flops one flip-flop for each of 

two signals to be compared Means are provided for causing .one flip-flop to be set the majority of the time in proportion to 

the extent to which one signal differs from the other in frequency or phase A method is also provided for integrating the difference 

between output waveforms of the flip-flops to obtain an output signal which can be used to adjust the frequency of phase of a variable signal with respect to a reference signal NASA 

r R ---- -2 r X

-

t _r. 'i 

-short v--,f i][voltage-induced 

, V b- - -short . -

N77-1333B*f National Aeronautics and Space Administration 

Lyndon B Johnson Space Center Houston Tex 

HEARING AID MALFUNCTION DETECTION SYSTEM Patent 

Application 

Roger L Kessinger inventor (to NASA) (Martin Marietta Corp 

Denver) Filed 8 Nov 1976 26 p 

(Contract NASS-14215) 

(NASA-Case-MSC-14916-1 US-Patent-Appl-SN-739914) Avail 

NTIS HC AO3/MF AOl CSCL 09C 

I A system for detecting malfunctions in electrical signal ,processing circuits is presented Malfunctions of a hearing aid 

are detectable in the form of frequency distortion and/or

inadequate amplification by the hearing aid amplifier, as well as weakening of the hearing aid power supply A test signal is 

generated and a limed switching circuit periodically applies the 

test signal to the input of the hearing aid amplifier in place of 

the minpt signal from the microphone The resulting amplifier 

output is compared with the input test signal used as a reference 

signal The hearing aid battery voltage is also periodically compared 

to a reference voltage A warning is triggered if the power supply voltage falls below the reference voltage Author 

N77-13338*I National Aeronautics and Space Administration 

Lyndon B Johnson Space Center, Houston Tex 

SHIELDED CONDUCTOR CABLE SYSTEM Patent Application 

Kent D Castle, inventor (to NASA) Filed 30 Nov 1976 12 p (NASA-Case-MSC-12745-1, US-Patent-AppI-SN-746579) Avail 

NTIS HC A02/MF AOl CSCL OSC 

A method is described for circuit protectiOn from abnormal 

surge voltages induced in a shielded cable The cable system carries one or more insulated conductors completely enclosed within a shield having one end connected to ground A lightningprotector network connects the other end of the shield to ground The protector network is normally open circuited and becomes 

circuited only in response to a momentary abnormal surge in the shield The protector networks open-toimpedance change completes a conductive circuit path between the shield and the two grounded ends for conducting a shield current which has the desired effect of protecting the 

signal carrying conductors in the cable from the large surge voltage Author 

I - 1 

E 

22 
---

- --- ------- 

33 ELECTRONICS AND ELECTRICAL ENGINEERING 

N77-14333 National Aeronautics and Space Administration the data output signal and supplying the differentiated signal to 'Goddard Space Flight Center, Greenbelt, Md an input of a voltage controlled oscillator included in the phase INRUSH CURRENT LIMITER Patent locked loop Official Gazette of the U S Patent Office 

Robert A Kichak, inventor (to NASA) Issued 7 Dec 1976 

5 p Filed 6 Jan 1975 Supersedes N75-16748 (13 - 08, 

p 0878) (NASA-Case-GSC-11789-1 US-Patent-3 996 506 

US-Patent-AppI-SN-538982 U$-Patent-Class-321-13 

US-Patent-Class-317-31) Avail US Patent Office CSCL OSC 

A circuit arrangement for limiting turn-on current inrush and 

current rate of nse in dc-to-dc power converters is considered 

A transistor control circuit is disposed between the input do 

power source and the transistor oscillator circuit of the converter 

to provide a ramp of current thereto The transistor control circuit 

functions as a time-variable current limiter initially while in the 

active region and as a saturated switch in the steady-state region 

A feedback arrangement allows the saturation drive current to 

be provided from the converter at a lower voltage level than 

that which may be required from the do power source to 

reduce dissipation and increase efficiency 

Official Gazette of the U S Patent Office 

...................... .......... -------­

i e J ~ i~N77-14335* National Aeronautics and Space Administration 

Marshall Space Flight Center. Huntsville Ata 

-- ---- SOLID-STATE Dav- CURRENT TRANSFORMER Patent 

David L Farnsworth, inventor (to NASA) (Westinghouse Electric 

S i --- -Corp. Baltimore) Issued 7 Dec 1976 4 p Filed 23 Jun ----.-...... - 1975 Supersedes N75-26251 (13 - 17 p 2106) Sponso'ed 

H by NASA I(NASA-Case-MFS-22560-1 US-Patent-3 996 462 

IN 2 ILr US-Patent-Appl-SN-599233, US-Patent-Class-250-214A 

US-Patent-Class-330-14 US-Patent-CFass-330-28 

." i] US-Patent-Class-330-59) Avail US Patent Office CSCL 09C 

A signal transformation network which is uniquely char­ -- I actnzed to exhibit a very low input impedance while maintaining a linear transfer characteristic when driven from a voltage source and when quiescently biased in the low microampere current 

range is described In its simplest form it consists of a tightly 

coupledtwo transistor network in which a common emitter input stage is interconnected directly with an emitter follower stage 

to provide virtually 100 percent negative feedback to the base 

input of the common emitter stage Bias to the network is 

supplied via the common tie point of the common emitter stage 

collector terminal and the emitter follower base stage terminal 

by a regulated constant current source and the output of the 

N77-14334" National Aeronautics and Space AdministrationOfialGeteothUSPtntfic circuit is taken from the conlector of the emitter follower stage 

Goddard Space Flight Center. Greenbelt. Md Official Gazette of the U S Patent Office 

LINEAR PHASE DEMODULATOR INCLUDING A PHASE 

LOCKED LOOP WITH AUXILIARY FEEDBACK LOOP 

Patent 

Ronnie R Rippy inventor (to NASA) Issued 14 Dec 1976 

8 p Filed 26 Nov 1975 Supersedes N76-13169 (14 - 04,, 

p 0416) (NASA-Case-GSC-12018-1 US-Patent-S 997,848 

US-Fatent-Appl-SN-635531 US-Patent-Class-329-122, 

US-Patent-Class-329-124 US-Patent-Class-331-23. 32 t, 

US-Patent-Class-331-36C US-Patent-Class-332-0V) Avail US 

Potent Office CSCL 09C 

A phase modulated wave that may have no carrier power is demodulated by a phase locked loop including a phase detector 'I.. 

for deriving an A C data output signal having a magnitude and a phase indicative of the phase of the modulated wave A feedback 

loop responsive to the data output signal restores power to the 

carrier frequency component to the loop In one embodiment 

the feedback loop includes a phase modulator responsive to the 

phase modulated wave and the data output signal In a second 

embodiment, carrier frequency power is restored by differentiating 

23
 
33 ELECTRONICS AND ELECTRICAL ENGINEERING 

N77-15293f# National Aeronautics and Space Administration, Washington, D C 

METHOD FOR PRODUCING THIN SURFACE BARRIER 

DIODE Patent Application 

Karl Remlt inventor (to NASA) (APL Laurel Md) Filed 24. Nov 

1976 15 p Sponsored by NASA 

(NASA-Case-HQN-10887-1. US-Patent-Appl-SN-744575) Avail 

NTIS HC AO2JMF AOl CSCL 09A 

A method of fabricating a thin surface barner diode is provided 

which utilizes a low resistivity starting substrate having a fiying 

pan shape comprised of a generally circular body portion and 

an elongate handle portion After a high resistivity epitaxial layer 

is grown in a slow highly controlled manner the substrate is 

mounted in an inert housing in which selected portions of the 

high resistivity silicon are etched away and the resultant device 

cleaned and dried The housing preferably includes a mounting block containing recesses in which holders for the substrate and 

the etching electrode are mounted in such a manner as to bring the substrate and electrode into proper registry The etched 

substrate is subsequently mounted in a support and treated to 

form a barrier diode detector the handle being etched away as a final step NASA 

68 0, 

70 72 

12d 

66 

4 u l
 

N77-17351* National Aeronautics and Space Administration 

Marshall Space Flight Center Huntsville Ala 

FREQUENCY MODULATED OSCILLATOR Patent 

Martial A Honnell inventor (to NASA) (Auburn Univ Ala ) Issued 

11 Jan 1977 5 p Filed 9 Apr 1975 Supersedes N75-21518 

(13 - 13. p 1499) Sponsored by NASA 

(NASA-Case-MFS-23181-1 US-Patent-4 003 004 

US-Patent-AppI-SN-566495. US-Patent-Class-332-30V 

US-Patent-Class-331-114 US-Patent-Class-331-177V 

US-Patent-Class-332-18) Avail US Patent Office CSCL 09A 

A frequency modulated push-pull oscillator in which the 

non-linear characteristic of varactors producing frequency modulation is compensated for by an opposite non-linear 

characteristic of a field effect transistor providing modulating bias to the varactors is described 

Official Gazette of the US Patent Office 

L- J 

N77-17354* National Aeronautics and Space Administration 

Lewis Research Center Cleveland Ohio 

ELECTRONIC ANALOG DIVIDER Patent 

Arthur G Birchenough, inventor (to NASA) Issued 4 Jan 1977 

4 p Fired 24 Jul 1975 Supersedes N75-28316 (13 - 19. 

p 2380)

(NASA-Case-LEW- 11881-1. US-Patent-4 001,602, 

US-Patent-Appl-SN-598968 US-Patent-Class-307-229 

U S-Patent-Class-307-230. US-Patent-Class-328-161) Avail 

US Patent Office CSCL 09C 

Advantage is taken of the current-exponential voltage 

characteristic of a diode over a certain range whereby the 

incremental impedance across the diode is inversely proportional, 

to the current through the diode Accordingly a divider circuit 

employs a bias current through the diode proportional to the 

desired denominator and applies an incremental current to the 

diode proportional to the numerator The incremental voltage across the diode is proportional to the quotient Official Gazette of the U S Patent Office 

-et 


N77-17357"j National Aeronautics and Space Administration 

Lewis Research Center Creveland Ohio 

METHOD OF ELECTRICALLY PRE-STRESSING INSULATION 

TO PROVIDE DIRECTIONAL INCREASE IN dc POTENTIAL 

BREAKDOWN Patent Application 

Irving G Hansen inventor (to NASA) Filed 31 Jan 1977 

7 p (NASA-Case-LEW-12273-1 US-Patent-Appl-SN-764253) Avail 

NTIS HC A02/MF AO1 CSCL 09C 

24 
33 ELECTRONICS AND ELECTRICAL ENGINEERING 

A method was provided for electrically pre-stressing an the power inverter when an overload condition is detected At 

insulator to increase the dc breakdown strength of the insulator the same time a monitoring currant inverter is turned on to 

in a given direction The method comprises placing an uncured deliver current to theload at a very low power level A second 

durable insulating material, such as an epoxy resin, in an electric circuit monitors current to the load from the monitoring current 

field and curing the insulating material while maintaining the inverter to hold the power inverter off through the control circuit 

field so as to capture an electric field within the insulating matenal until the overload condition is cleared so the control circuit may 

The electric field biasses the breakdown potential in a given be deactivated in order for the power inverter to be restored 

direction so that the insulation isable to withstand a substantially after the monitoring current inverter is turned off completely 

greater do operating voltage of the appropriate polarity NASA NASA 

N77-17358-# National Aeronautics and Space Administration -------- Pasadena Office, Calif 

SWEPT GROUP DELAY MEASUREMENT Patent Apphcatlon 

David L Trowbridge inventor (to NASA) (JPL) Filed 24 Nov o 1976 14 p 

(Contract NAS7-100)
 

(NASA-Case-NPO-13909-1 US-Patent-Appi-SN-744477) Avail 23-
 . 

NTIS HC A02/MF AO1 CSCL 09C T4 

A method and apparatus for recording directly group delay 

measurement of a system under temperature and stress tests 

employing a modulated carrier fequency swept over an S 
or X

band of interest is described and applied through a reference 

path and a test path to separate detectors for group delay 

measurement using a power divider, a directional coupler or a 

hybrid T junction A phase comparator is initially balanced and 

then the modulated carner isswept in frequency over the band 

of interest for different conditions of temperature and/or 

mechanical stress to obtain a family of charactenstics group 

delay curves for the system under test NASA N77-17360"# National Aeronautics and Space Administration 

Lewis Research Center. Cleveland. Ohio
 

TRAVELING WAVE TUBE CIRCUIT Patent Application 

Denis J Connolly. inventor (to NASA) Filed 16 Feb 1977 

12 p 

(NASA-Case-LEW-12013-1 US-Patent-Appl-SN-768795) Avail 

T NTIS HC A02/MF A01 CSCL OC 

The traveling wave tube (TWT)has a slow wave structure 

(SWS)which issevered into two or more sections A signal 

path connects the end of an SWS section to the beginning of 

the impedance following matching SWS section The signal path comprises an coupler (IMC) followed by an isolater a phase correcting filter, a vanable phase shifter, and a second 

IMC The aggregate band pass characteristic of the components in the signal path is chosen to reject or strongly attenuate all 

frequencies outside the desired operating frequency range of the 

TWT and yet pass with minimal attenuation in the forward 

direction allfrequencies within the desired operating frequency 

range NASA 

N77-17359-# National Aeronautics and Space Administration
 

Pasadena Office Calif
 

OVERLAOD PROTECTION SYSTEM FOR POWER INVERTER " 

Patent Application
 

Satoshi Nagano inventor (to NASA) (JPL) Filed 15 Nov 1976i 

i8 p


(Contract NAS7-00) i'm
 

(NASA-Case-NPO-13872-1 US-Patent-AppI-SN-742034) Avail 11E'.
 

NTIS HC A02/MF A0l CSCL 09C
 

An overload protection system for a power inverter utilizes
 

a first circuit for monitoring current to the load from 
the power


inverter to detect an overload and a control circuit
 to shut off
 

25
 
33 ELECTRONICS AND ELECTRICAL ENGINEERING 

N77-19319fi National Aeronautics and Space Administration 

Goddard Space Flight Center Greenbelt, Md 

LOGARITHMIC CIRCUIT WITH WIDE DYNAMIC RANGE 

Patent Application 

Paris H Wiley (Va Polytechnic Inst and State Umv) and Eugene 

A Manus inventors (to NASA) (Va Polytechnic Inst and State 

Univ) Filed 16 Feb 1977 15 p Sponsored by NASA 

(NASA-Case-GSC-12145-1 US-Patent-AppI-SN-769149) Avail 

NTIS HC A02/MF AO CSCL09C 

A circuit deriving an output voltage that is proportional to 

the logarithm of a de input voltage, and is susceptible to wide 

variations in amplitude was fabricated A constant current source 

which forward biases a diode so that the diode operates in the exponential portion of its voltage versus current characteristic 

above its saturation current is included The constant current 

source includes first and second cascaded feedback, do operational 

amplifiers connected in a negative feedback circuit An input 

terminal of the first amplifier is responsive to the input voltage 

A circuit shunting the first amplifier output terminal includes a resistor in series with the diode The voltage across the resistor 

is sensed at the input of the second dc operational feedback 

amplifier The feedback voltage derived from the output of the 

second amplifier is subtracted by the first amplifier from the 

input voltage so that the current flowing through the resistor is 

proportional to the input voltage NASA 

sIt 

It 

r -----

, 

L- _NTIS 

yN7don * NaJohnonaAeoutcan Space Administratotion 

PHASE ARRAY ANTENNA CONTROL Patent Application 

George D Doland inventor (to NASA) (Lockheed Electronics 

Co Houston Tex) Filed 3 Feb 1977 51 p (Contract NAS9-12200) 

(NASA-Caso-M$C-14939-1 US-Patent-Appi-SN-765165) Avail 

NTIS HC AO4/MF A01 CSCL 09C 

The present invention provides several improvements in= 

steering and control of phased array antennas having a small 

number of elements typically on the order of 5 to 17 elements 

Among the improvements are increasing the number of beam 

steering positions reducing the possibility of phase transients in 

signals received or transmitted with the antennas and increasing 

control and testing capacity with respect to the antennas 

Author 

(PITCH PLANE) Z0 

Y AXIS 

1 12 

0LL 

PLANE) 

1

3 

21
 

IN77-20341*# National Aeronautics and Space Administration 

Marshall Space Flight Center Huntsville, Ala 

DIRECT CURRENT TRANSFORMER Patent Application IS M Khanna and Eugene W Urban, inventors (to NASA) (NSF. 

Washington. D C) Filed 29 Mar 1977 10 p 

(NASA-Case-MFS-23659-1 US-Patent-AppI-SN-782462) Avail 

HC A02/MF AOl CSCL O9A 

A direct current transformer was built in which the primary consists of an elongated strip of superconductive material across 

the ends of which is applied a direct current potential Parallel 

and closely spaced to the primary is positioned a transformer 

secondary consisting of a thin strip of magnetoresistive 

material NASA 

vs 

_ 

26
 
33 ELECTRONICS AND ELECTRICAL ENGINEERING 

N77-20343*# National Aeronautics and Space Administration of the periphery of the bore as the magnetic field rotates about 

John F Kennedy Space Center, Cocoa Beach, Fla the periphery of the bore NASA 

MICROCOMPUTERIZED ELECTRIC FIELD METER DIAGNOSTIC AND CALIBRATION SYSTEM Patent Application 

Larry D Holley and Jerry W Mason inventors (to NASA) (Federal 

Electric Corp Paramus N J) Filed 24 Mar 1977 14 p (NASA-Case-KSC-1 1035-1 US-Patent-Appi-SN-780874) Avail 16 

NTIS HC A02/MF 901 CSCL 09A 24
 

A method for rapid calibration of field meters used to measure +
 

-
 electromagnetic field potential is described A reference voltage 

is applied to the field meter for causing signals to be produced I5--47 

on the output terminals thereof A bank of relays is provided 

for selectively connecting output terminals of the field meter to 

a multiplexer by means of a digital voltmeter and an oscilloscope 9 

A frequency-shift-keyed receiver is also connected to one of the 52 

terminals of the field meter for transmitting and convening a frequency shift keyed signal to a digital signal which is 

subsequently, applied to the multiplexer A microprocessor 

generates coded command signals to the bank of relays ano " 3 

also to the multiplexer for controlling the comparison of the 3 

output signals with information stored within the micro- 56j 

processor NASA -44 

17/ 50 

N77-21314" National Aeronautics and Space Administration 

2r~e'~~'~ Pasadena Office Calif LADJ [jj CHARGE STORAGE Pjdefl[e1Ch DIODE MODULATORS AND DEMODULATORS Patent 

Milton H Brockman. inventor (to NASA) (JPL), Issued 1 Jun 

1971 9 p Filed 12 Jul 1968 Sponsored by NASA 

(tJASA-Case-NP010189-1 NASA-Case-NPO-10781-1. 

US-Patent-3.582 828 US-Patent-Appl-SN-744522 

US-Patent-Class-332-16. US-Patent-Class-307-232. 

US-Patent-Class-307-238 US-Patent-Class-307-280 

US-Patent-Class-329-119, US-Patent-Class-329-205. 

US-Patent-Class-332-30 US-Patent-Class-332-52) Avail US 

Patent Office CSCL 09A Circuits for the modulation or demodulation of radio frequency 

signals compnsing a charge storage diode which provides a reverse 

current with a current-time integral equal to that of a forward 

current which has previously passed through the diode are N77-20344"# National Aeronautics and Space Administration presented In the modulator circuit, the carrier signal is coupled Goddard Inst for Space Studies New York to pass through the diode, while the modulating signal biases 

A ROTARY ELECTRIC DEVICE Patent Application the diode to govern the phase at which it conducts The diode 

Jesse Madey inventor (to NASA) Filed 21 Mar 1977 21 p output is phase- and amplitude-modulated In the demodulator 

(NASA-Case-GSC-12138-1, US-Patent-Appl-SN-779871) Avail circuit a constant radio frequency signal is coupled to pass NTIS HC AOZ/MF A01 CSCL 09A through the diode while the signal to be phase-demodulated An electn motor having an output shaft that rotates at a biases the diode to govern the phase at which it conducts 

speed much slower than the speed of a commutation shaft Official Gazette of the U S Patent Office 

comprises a stator having a cylindrical bore with a longitudinal 

axis and a rotor that carries the output shaft and rotates in the 

bore eccentrically about the axis so that there is contact and go no magnetic gap between a relatively small portion of the rotor 12 i4. 10 L 8 periphery and the periphery of the bore A magnetic field rotating WV 

at the speed of the commutation shaft, is applied to the periphery 24 

of the bore The field has longitudinally extending magnetic field a components of opposite polarity so that around approximately io 20 

180 deg of the bore the field extends in a first direction, while 

around the other 180 deg of the bore the field extends in the =2 

opposite direction The rotor includes permanent magnet pole faces at opposite ends of the bore The pole faces of the rotor are alternately attracted to and repulsed from different portions 

27 
33 ELECTRONICSAND ELECTRICAL ENGINEERING 

N77-21315* National Aeronautics and Space Administration adsorbs gas to reduce the pressure in the lamp envelope to the 

Pasadena Office. Calif desired safe donoperating level 

COMPACT, HIGH INTENSITY ARC LAMP WITH INTERNAL Official Gazette of the U S Patent Office 

MAGNETIC FIELD PRODUCING MEANS Patent 

Charles G Miller, inventor (to NASA) (JPL) Issued 29 Apr 

1975 7 p Filed 2 Aug 1973 Continuation-m-part of abandoned 

US Patent-Appl-SN-173178 filed 19 Aug 1971 Sponsored I 

by NASA.. 

(NASA-Case-NPO-11510-1. US-Patent-3 881 132. 

US-Patent-Appl-SN-385059 US-Patent-Class-315-344. 

US-Patcnt-Class-313-32. US-Patent-Class-313-161 

US-Patent-Class-313-184. US-Patent-Class-SI 3-224 

US-Patent-Appi-SN-173178) Avail US Patent Office CSCL 

09A
 

significant increase in brightness of the arc and a more 

focusable light-emitting region are provided in compact arc lamps 

by causing magnetic lines of force to diverge from the cathode 

tip from magnetic field producing means disposed within the 

cathode structure Official Gazette of the U S Patent Office 

N77-21319*# National Aeronautics and Space Administration 

. " John F Kennedy Space Center Cocoa Beach. Fla 

REMOTE LIGHTNING MONITOR SYSTEM Patent Application 

Carl L Lennon and Thomas 0 Britt. inventors (to NASA) Filed 

29 Mar 1977 18 p (NASA-CaseEKSC-11031-1 US-Patent-Appl-SN-782482) Avail 

NTIS HC A02/MF A01 CSCL 09C 

An apparatus for monitoring analyzing, and accurately 

determining the value of peak current, the peak rate of change 

in current with respect to time and the rise time of the electrical 

currents generated in an electrical conductive mast that is located 

in the vicinity where lightning is monitored is described The 

apparatus includes an electrical coil for sensing the change in 

current flowing through the mast and generating a voltage 

responsive An on site recorder and a recorder control system 

records the voltages produced responsive to lightning strikes and 

converts the voltage to digital signals for being transmitted back 

to the remote command station responsive to command signals 

The recorder and the recorder controI system are carried within 

an RFI proof environmental housing into which the command 

signals are fed by means of a fiber optic cable so as to minimize 

electrical interference NASA 

N77-21316* National Aeronautics and Space Administration 

Pasadena Office Calif 

DEPRESSURIZATION OF ARC LAMPS Patent 

Charles G Miller inventor (to NASA) (JPL) Issued 16 Nov 

1971 8 p Filed 14 Jul 1969 Sponsored by NASA 

(NASA-Case-NPO- 10790-1 US-Patent-3,621,330 

US-Patent-Appl-SN-841278, US-Patent-Class-315-108 

US-Patent-Class-313-175 US-Patent-Class-313-180 

US-Patent-Class-313-184. US-Patent-Class-315-110) Avail US 

Patent Office CSCL 09A 

A closed cycle depressurization system including a lamp 

envelope for containment of a discharge gas at greater than 

atmospheric pressure in communication with a gas storage and 

depressurization chamber is presented A substantially transparent 

material, potentially frangible at said pressure forms at least a 

portion of the envelope In one embodiment, depressurization is 

effected by externally cooling the walls of the chamber and in a 

second embodiment, the chamber contains a gas adsorbent which 

28 
33 ELECTRONICS AND ELECTRICAL ENGINEERING 

N77-21320-# National Aeronautics and Space Administration voltage source to illuminate a lamp when the output signal from 

John F Kennedy Space Center, Cocoa Beach Fla the amplifier exceeds the second voltage NASA 

LIGHTNING CURRENT WAVEFORM MEASURING SYSTEM 

Patent Application R J Wojtasinski, J C Fuchs (Federal Electric Corp Paramus, 

N J ) and C Grove inventors (to NASA) (Federal Electric Corp 

Paramus N J) Filed 30 Mar 1977 16 p ­

(NASA-Case-KSC-11018-1, US-Patent-AppI-SN-782693) Avail 6W, bIf E 

NTIS HC A02/MF AOl CSCL 09C 

An apparatus for monitoring current waveforms produced seuc c sn. 

by lightning strikes which generate currents in an elongated cable 

is described These currents are converted to voltages and to 

light waves for being transmitted over an optical cable to a 

remote location At the remote location, the waves are reconstructed back into electrical waves for being stored into a 

memory The information is stored within the memory with a 

timing signal so that only different signals need to stored in 

order to reconstruct the wave form NASA 

N77-21322#g Nattonal Aeronautics and Space Administration 

Goddard Inst for Space Studies New York 

WIDE POWER RANGE MICROWAVE FEEDBACK CONTROLLER Patent Application 

Lea E Titus, inventor (to NASA) (Hughes Aircraft Co Los Angeles) 

Filed 29 Mar 1977 17 p Sponsored by NASA 

(NASA-Case-GSC-12146-1. US-Patent-Appl-SN-782480) Avail 

NTIS HC A02/MF A01 CSCL 09C 

A microwave source of substantially constant amplitude drives 

a foryward path connected between the source and the load 

The forward path includes a voltage controlled PIN diode, vanable 

microwave attenuator A feedback path responsive to the 

microwave power level in the forward path derives a control 

voltage for the PIN attenuator The feedback path includes a 

microwave equalizer attenuator having an amplitude versus 

frequency response corresponding substantially with the amplitude 

versus frequency response of the load The 

dnves a linear, crystal amplitude detectpr 

equalizer attenuator 

Attenuating means 

included in the forward and feedback paths are selectively 

connected in circuit to maintain the power level of the microwave 

input to the amplitude detector substantially constant, even though 

different power ranges are supplied to the load by the forward 

path Author 

N77-21321*# National Aeronautics and Space Administration 

John F Kennedy Space Center Cocoa Beach, Fla 

DIGITAL AUTOMATIC GAIN AMPLIFUER Patent Applieation 

Larry D Holley and James 0 Ward. inventors (to NASA) (Federal 

Electric Corp Paramus, N J) Filed 24 Mar 1977 13 p I 

(NASA-Case-KSC-11009-1 US-Patent-App-SN-780729) Avail 

NTIS Hl A02/MF AO1 CSCL 09C i , 

A circuit was made for adjusting the amplitude of a reference 

signal to a predetermined level to permit subsequent data signals 

i I 

I I 

to be interpreted correctly The circuit includes an operational -

amplifier having a feedback circuit connected between an output 

terminal and an input terminal, a bank of relays operably connected 

I 

to a plurality of resistors, and a comparator comparing an output N -­

voltage of the amplifier with a reference voltage and generating L- -.. ..... .

a compared signal responsive thereto Means is provided for 

selectively energizing the relays according to the compared 

signal from the comparator until the output signal from the 

amplifier equals to the reference signal A second comparator is 

provided for comparing the output of the amplifier with a second 

29 
34 FLUID MECHANICS AND HEATTRANSFER 

34FLUID MECHANICS AND HEAT 


TRANSFER 

fluidics mass Includes boundary layers hydrodynamics, dhydrogen 

transfer, and ablation cooling 

For related information see also 02 Aerodynamics and 

77 Thermodynamics and Statistical Physics 

N77-10463* National Aeronautics and Space Administration 

Marshall Space Flight Center. Huntsville, Ala 

HEAT EXCHANGER Patent 

Roy F Holmes (Gen Dyn/Convair San Diego Calf) and Edward 

E Keller inventors (to NASA) (Gen Dyn/Convair San Diego. 

Calif) Issued 5 Oct 1976 5 p Filed 5 Nov 1974 Supersedes 

N75-10366 (13 - 01 p 0049) Sponsored by NASA 

(NASA-Case-MFS-22991-1 US-Patent-3 983 933 

US-Patent-Appi-SN-521006 US-Patent-Class- 165-164 

US-Patent-Class-165-170) Avail US Patent Office CSCL. 

20D
 

An improved lightweight heat exchanger particularly suited 

for use in systems having low volume flow high longitudinal 

gradient and high effectiveness requirements is described The 

heat exchanger is characterized by a shell of an annular 

configuration an endless plate of minimal thickness and of a substantially uniformly convoluted configuration disposed within 

the annular shell for defining a plurality of endless, juxtaposed 

passages each having a low Reynolds number and being of an 

annular configuration A pair of manifolds disposed 180 deg 

apart is mounted on the shell in communication with the passages 

through which counterflowing fluids are simultaneously introduced 

and extracted from the passageways for achieving a continuous 

transfer of heat through the convoluted plate 

Officeal Gazette of the U S Patent Office 

iewl tOO' is q I 

g' 

iTsIll-..,,llj'1l 

4--hi II: isystem 

3 -3 ;5J 3 

coj Foe 

1516, s 

31 

3 t 3 

N77-12332*# National Aeronautics and Space Administration 

Langley Research Center Langley Station Va 

AUXILIARY POWER SYSTEM FOR ACTIVITY COOLED 

AIRCRAFT Patent Application 

Robert A Jones inventor (to NASA) Filed 24 Nov 1976 9 p 

(NASA-Case-LAR-1 1626-1, US-Patent-Appi-SN-744542) Avail 

NTIS HC A02JMF A01 CSCL 20D 

A method is described for extracting heat energy from an active cooling system in an aircraft as a source of auxiliary 

power A secondary coolant such as a water-glycol mixture removes heat from near the outer surfaces of the vehicle and 

circulates through aheat exchanger Cryogenic fuel such as liquid 

is first pressurized and passed through the heat 

exchanger and a turbine on its way to the engine The temperature 

of the fuel is raised in the heat exchanger to a value above 

that which is required for the engine./because the fuel temperature and pressure will drop across the turbine The turbine 

converts this excess heat to provide energy to pressunze the 

fuel, circulate the secondary coolant and drive other aircraft 

equipment Author 

15
 

N77-14372*f National Aeronautics and Space Administration 

Ames Research Center. Moffett Field Calif 

INTUMESCENT-ABLATOR COATINGS USING ENDOTHERMIC FILLERS Patent Application Paul M Sawko and Salvatore R Ricotiello. inventors (to NASA) 

Filed 23 Dec 1976 30 p 

(NASA-Case-ARC- 11043-1 US-Patent-Appl-SN-753964) Avail NTIS HC A03/MF A01 CSCL 20D 

An improved intumescent composition is provided for 

insulating a substrate against heat which consists of a mixture 

of an endothermic filler with an intumescent composition which 

is composed of an intumescent agent and a polymeric binder 

The composition of the invention employs a filler such 

as ammonium oxlate potassium fluoborate ammonium fluoborate or zinc borate in combination with a base intumescent 

composition which contains 44-dinitrosulfanihde or the am­ monium salt of 1.4-nitroaniline-2-sulfonic acid in a polymeric binder system The endothermic characteristics of the filler 

moderate the heat emitted upon the thermal decomposition of 

the. intumescent agent in an applied intumescent coating NASA 

o": ­

30
 
34 FLUID MECHANICS AND HEAT TRANSFER 

N77-15343*# National Aeronautics and Space Administration (the proportion of radiant energy absorbed) upon exposure to 

Lewis Research Center. Cleveland, Ohio particulate or solar radiation as the particulate radiation is 

MAGNETICHEAT PUMPING Patent Application substantially absorbed in the particulate radiation stable layer 

Gerald V Brown, inventor (to NASA) Filed 30 Nov 1976 and the solar, radiation partially absorbed by the particulate 

21 p radiation stable layer is transmitted by the solar radiation stable 

(NASA-Case-LEW-12508-1 US-Patent-AppI-SN-746580) Avail film to the reflecting material which reflects it back throLgh the 

NTIS HC AO2/MF A01 CSCL 20D laminate and into space 

The magnetic heat pumping method employs ferromagnetic Official Gazette of the U S Patent Office 

or fernmagnetic elements, preferably a rare earth based material, 

such as gadolmium, and preferably employs a regenerator The 

temperature and applied magnetic field of the element are 2 14 

controlled to cause the state of the element as represented on 

a temperature-magnetic entropy diagram repeatedly to traverse is 

a loop The loop may have a first portion of concurrent substantially 	 i ­

isothermal or constant temperature and increasing applied 

magnetic field a second portion of lowering temperature and 

constant applied magnetic field a third portion of isothermal 

and decreasing applied magnetic field, and a fourth portion of 

increasing temperature and constant applied magnetic field Other /

loops may be four-sided, with. for example two isotherms and 

two adiabats (constant magnetic entropy portions) A regenerator 

may be employed to enhance desired cooling or heating effects, 

with vaned magnetic fields or varying temperatures including 

three-sided figures traversed by the representative point NASA 

' 	 N77-19353* National Aeronautics and Space Administration 

Ames Research Center Moffett Field, Calif 

TUBULAR SUBLIMATORY EVAPORATOR HEAT SINK 

Patent
 

-- "-	 Bruce W Webbon, inventor (to NASA) Issued 15 Feb 1977 

- - 6 p Filed 16 Oct 1975 Supersedes N76-13599 (14 - 04 

p 0471) 

(NASA-Case-ARC-10912-1 US-Patent-4 007 601. 

US-Patent-Appl-SN-623187 US-Patent-Class-62-100, 

-- ID US-Patent-Class-62-121 US-Patent-Class-62-269 C 

US-Patent-Class-62-315) Avail US Patent Office CSCL 20D 

An evaporative refrigerator or cooler comprising a bundle of 

spaced, porous walled tubes closed at one of their ends and -vented 	 to a vacuum at the other end is disclosed The tube 

bundle is surrounded by a water jacket having a hot water inlet 

- distribution manifold and a cooled water outlet through a plenum 

chamber Hot water is pumped into the jacket to circulate around 

the tubes and when this water meets the vacuum existing inside 

the tubes, it evaporates thereby cooling the water in the jacket 

If cooling proceeds to the point where water penetrating or 

surrounding allor part of the tubes freezes operation continues 

with local sublimation of the ice on the tubes while the 

N77-18s2a National Aeronautics and Space Adminstraton circulating water attempts to melt the ice Both sublimation and 

Langley Research Center, Langley StaTIon Va evaporation may take place simultaneously in different regions 

PARTICUlATEAND SOLAR RADIATION STABLE COATING of the device Official Gazette of the U S Patent Office 

FOR SPACECRAFT Patent 

Wayne S Slemp inventor (to NASA) Issued 15 Feb 1977 

4 p Filed 16 May 1975 Supersedes N75-29431 (13 - 20, 

p 2526) Continuation-m-part of abandoned US Patent Appl 

SN-428992 filed 27 Dec 1973 

(NASA-Case-LAR-1 0805-2, US-Patent-4 008 348, 

US-Patent-Appl-SN-578240, US-Patent-Class-428-35 

US-Patent-Class-428-421 US-Patent-Class-428-461, 

US-Patent-Class-428-474 US-Patent-Class-244-117A 

US-Patent-Class-427-160 US-Patent-Class-427-322. 

US-Patent-AppI-SN-428992) Avail US Patent Office CSCL 

20D
 

A laminate thermal control coating for spacecraft comprising a layer of solar fadiation stable film, a layer of particulate 

radiation stable film applied to the upper surface of the solar 

radiation stable film and a layer of reflecting material applied 

to the lower surface of the solar radiation stable film was described 

The coating experiences no increase in solar radiation absorptance 

31
 
--------

-------------------

35 INSTRUMENTATION AND PHOTOGRAPHY 

35 INSTRUMENTATION AND 

PHOTOGRAPHY 

Includes remote sensors measuring instruments and 

gages detectors cameras and photographic supplies and 

holography 

For aerial photography see 43 Earth Resources For 

related information see also 06 Aircraft bnstrumentation 

and 19 Spacecraft Instrumentation 

N77-10492 National Aeronautics and Space Administration 

Pasadena Office Calif 

ION AND ELECTRON DETECTOR FOR USE IN AN ICRI 

SPECTROMETER Patent 

Wesley T Huntress inventor (to NASA) (JPL) Issued 5 Oct 

1976 8 p Filed 27 Aug 1974 Supersedes N74-32890 (12 ­ 22 p 2695) Published under the second Trial Voluntary Protest 

Program as B 500 981 27 Jan 1976 Sponsored by NASA 

(NASA-Case-NPO-13479-1 US-Patent-3 984681 

US-Patent-Appi-SN-500981, US-Patent-Class-250-291 

US-Patent-Class-260-290) Avail US Patent Office CSCL 

14B 

A detector for detecting ions and/or electrons present in a resonance cell of an ICR spectrometer is disclosed The detector 

which operates on the Q-meter principle is driven by an external 

rf oscillator capable of providing rf frequencies upto about 15MHz 

at an adjustable low rf signal level a g below 2OmV The detector 

is connected across the resonance of the cell to detect ions by detecting their cyclotron frequency Electrons are detectable by 

connecting the detector across the cell's trapping plates and 

thereby detect the electrons' trapping motion the frequency of 

which is in the megahtertz range 

Official Gazette of the U S Patent Office 

a 37 39 

'-- - 40 

fspot 

O.]f i2- -,_ 3s fl- 4" 

S[- I 3 POaVL47 

Ste ocL BIAS 

R zIASI la 

6 -the I 

N77-10493- National Aeronautics and Space Administration 

Marshall Space Flight Center Huntsville, Ala 

FOCUSED LASER DOPPLER VELOCIMETER Patent 

James W Bilbro Werner K Dahm. Ronald B Campbell Jr 

(Raytheon Co Huntsville, Ala) Robert M Huffaker, Harold IS 

Jeffreys Albert V Jelahan (Raytheon Co, Huntsville, Ala) Wayne H Keene (Raytheon Co Huntsville Ala) Michael C Krause 

(LMSC Huntsville Ala) Thomas R Lawrence (LMSC Huntsville 

Ala) Charles M Sonnenschen inventors (to NASA) (Raytheon 

Co Huntsville, Ala) et al Issued 5 Oct 1976 7 p Filed 

3 Dec 1975 Supersedes, N76-13459 (14 - 04. p 0454) 

(NASA-Case-MFS-23178-1 US-Patent-3 984 686 

US-Patent-Appl-SN-637247. US-Patent-Class-250-339, 

US-Patent-Class-250-338 US-Patent-Class-250-347 

US-Patent-Class-356-106R) Avail US Patent Office CSCL 

14B 

A system for remotely rneasuring velocities present in discrete

volumes of air is described A C02 laser beam is focused by a 

telescope at such a volume a focal volume and within the 

focusable range near field of the telescope The back scatter 

or reflected light principally from the focal volume, passes back through the telescope and is frequency compared wjth the original 

frequency of the laser and the difference frequency or frequencies 

represent paricle velocites i that focal volume 

Official Gazette of the U S Patent Office 

I! 

N77-10497*# National Aeronautics and Space Administration 

Langley Research Center Langley Station Va 

DEVICE FOR MEASURING THE CONTOUR OF A SURFACE 

Patent Application 

Ernest E Burcher and Stephen Katzberg inventors (to NASA) Filed 8 Nov 1976 10 p 

(NASA-Case-LAR-11869-1 US-Patent-Appl-SN-740155) Avail 

NTIS HCA02/MF AOl CSCL 14B 

A device for measuring the contour of a surface is considered 

Light from a source is imaged by a lens onto the surface which 

concentrates the energy from the source into a spot A scanning means is used to scan the spot across the surface As the 

surface is being scanned the surface moves relative to the point 

of perfect focus *When the surface moves away from perfect 

focus the spot increases in size while the total energy in the 

remains virtually constant The lens then reimages the light reflected by the surface onto two detectors through two different 

sized apertures The light energy going to the two detectors is 

separated by a beam splitter This second path of the light 

energy through the lens further defocuses the spot but as a result of the different sizes of the apertures in each light detector 

path, the amount of defocus for each is different The ratio of 

outputs of the two detectors which is indicative of the contour 

of the surface is obtained by adivider NASA 

--- -5 -- -----

MMNIZED 

I 

' O ru 

I - ­

.... 

32 
35 INSTRUMENTATION AND PHOTOGRAPHY
 

N77-10498*# National Aeronautics and Space Administration of minimum length An alternative arrangement employs a beam 

Ames Research Center, Moffett Field, Calif splitter and two lenses to operate the cells in parallel NASA 

ROTARY LEVELING BASE PLATFORM Patent Application Robert W Delaplame and Daniel L Mossolan inventors (to 

NASA) Filed 3 Nov 1976 8 p (NASA-Case-ARC-10981-1 US-Patent-AppI-SN-738218) Avail 

NTIS HC AO2/MFA01 CSCL 148 

A leveling apparatus for the precise level adjustment of a as scientific instrument is analyzed A base member is provided having a hollow cylindncal shape A table for supporting the 27 1o 

instrument rests on the base and has a shaft portion extending INFRARED 2a 

below the table The upper portion of the shaft fits tightly into RADIATION 

the hollow portion of the base member whereas the lower _ 2 

portion of the shaft is machined to fit loosely The lower portion n of the shaft is provided with a groove cut around the circumference -- /7/ j' 

thereof Adjusting screws are threaded through the hollow 

cylindrical portion and are adapted to enter the groove By 30 -0 

adjusting the screws the lower portion of the shaft is moved in 

a vertical plane since the shaft which is loosely fitted into the DIFFERENTIAL 

cylinder The upper portion of the shaft which is tightly fined DETECTOR 

into the upper end of the cylinder causes the cylinder to deform 

slightly providing a fulcrum point which allows the table to be 24 

leveled in response to the adjustment of the adjusting screws 

NASA 1 

-2B
 

,34 26
 

N77-11364# National Aeronautics and Space Administration 

Ames Research Center Moffett Field Calif 

ANGLE DETECTOR Patent Application 

Gilbert T Parra, inventor (to NASA) Filed 10 Nov 1976 

16 p (NASA-Case-ARC-11036-1 US-Patent-AppI-SN-740457) Avail 

NTIS H-C A02/MF A01 CSCL 143 

An angle detector for determining a transducers angular .... disposition to a capacitive pickup element is described The 

transducer compnses a pendulum mounted inductive element 

moving past the capacitive pickup element The capacitive pickup 

element divides the inductive element into two parts L sub 1 

and L sub 2 which form the arms of one side of an a-c bridge 

Two networks R sub 1 and R sub 2 having a plurality of binary 

weighted resistors and an equal number of digitally controlled 

switches for removing resistors from the networks form the arms of the other side of the a-c bridge A binary counter controlled 

by a phase detector balances the bridge by adjusting the resistance 

of R sub I and R sub 2 The binary output of the counter is 

representative of the angle NASA 

N77-11-363"# National Aeronautics and Space Administration 

Pasadena Office, Calif 

DIFFERENTIAL OPTOACOUSTIC ABSORPTION DETECTOR 

Patent Applicadon Michael $ Shumate. inventor (to NASA) (JPL) Filed 27 Aug 1976 18 p 1 I 

(Contract NA$7-100) (NASA-Case-NPO-13759-1 US-Patent-Appl-SN-718266) Avail 

NTIS HCA02/MFA01 CSCL14B -

A differential optoacoustic absorption detector employs two 

tapered cells in tandem or in parallel When operating in tandem, two mirrors are used at one end remote from the source of the 

beam of light directed into one cell back through the other, and a lens to focus the light beam into the one cell at a principal focus half way between the reflecting mirrors Each cell is tapered 

to conform to the shape of the beam so that the volume of one is the same as for the other, and the volume of each 

receives maximum illumination The axes of the cells are placed as close to each other as possible in order to connect a differential prmure detector to the cells with connecting passages 

33
 
35 INSTRUMENTATION AND PHOTOGRAPHY 

N77-13391*# National Aeronautics and Space Administration 'the magnetic field for thepump~together with the housing form 

Goddard Space Flight Center Greenbelt Md the vacuum pump enclosure or housing 

FLUID SAMPLING DEVICE Patent ApMicatioal Official Gazette of the U S Patent Office 

David K Studenick inventor (to NASA) Filed 19 NoV 1976 

24 p 

(NASA-Case-GSC-12143-1 US-Patent-AppI-SN-743249) Avail 

NTIS HC AO2/MF A01 CSCL 14B 

A fluid sampling device is described for selectively sampling 

multiple fluids including a support frame A plurality of fluid 

inlet devices extend through the support frame and each of the 

14 fluid inlet devices include a longitudinal aperture extending 

therethrough An opening device that is responsive to a control 12 

signal selectively opens the aperture for passing the fluid A 

closing device that *, responsive to another control signal 65 53 't '2 36 

selectively closes the aperture tot terminating further fluid flow 3a 60 

Author 

307
 

142
 

/so 

T4 76 52 4so 5 4 

0'.12 'Z ... N77-14407* National Aeronautics and Space Administration Langley Research Center. Langley Station Va 

MINIATURE BIAXIAL STRAIN TRANSDUCER Patent 

Ira S Hoffman inventor (to NASA) Issued 7 Dec 1976 6 p 

Filed 30 Dec 1975 Supersedes N76-16396 (14 - 07 

p 0847) 

(NASA-Case-LAR-11648-1, US-Patent-3 995 476 

US-Patent-AppI-SN-645571 US-Patent-Class-73-133R) Avail 

US Patent Office CSCL 14B 

A reusable miniature strain transducer for use in the 

measurement of static or quasi-static high level biaxial strain 

on the surface of test specimens or structures was studied 

Two cantilever arms, constructed by machining the material to 

appropriate flexibility are self-aligning and constitute the 

transducing elements of the device Used in conjunction with 

strain gages the device enables testing beyond normal gage 

limits for high strains and number of load cycles The device 

does not require conversion computations since the eleotrical 

output of the strain gages is directly proportional to the strain 

measured Official Gazette of the U S Patent Office 

N77-14406* National Aeronautics and Space Administration 

Pasadena Office, Calif 

MASS SPECTROMETER WITH MAGNETIC POLE PIECES 

PROVIDING THE MAGNETIC FIELDS FOR BOTH THE is ID 

MAGNETIC SECTOR AND AN ION-TYPE VACUUM PUMP 23 

Patent 

Leonard M Sieradski (JPL) Charles E Giffin (JPL) and Alfred 2.
 

0 Nier, inventors (to NASA) (JPL Issued 7 Dec 1976 8 p
 

Filed 21 Nov 1975 Supersedes N76-13456 (14- 04 p 0453)
 

Sponsored by NASA
 

US-Patent-Appi-S N-634205, US-Patent-Class-250-289 

US-Patent-Class-250-298) Avail US Patent Office CSCL a 

A mass spectrometer (MS) with unique magnetic pole pieces "' "i 

which provide a homogenous magnetic field across the gap of , :S- 41 31 

the MS magnetic sector as well as the magnetic field across an 0 

ion-type vacuum pump is disclosed The pole pieces form the 4. 

top and bottom sides of a housing The housing is positioned 

so that portions of the pole pieces form part of the magnetic F 

sector with the space between them defining the gap region of 

the magnetic sector, through which an ion beam passes The 

pole pieces extend beyond the magnetic sector with the space 

between them being large enough to accommodate the electrical 

parts of an ion-type vacuum pump The pole pieces which provide 

34
 
35 INSTRUMENTATION AND PHOTOGRAPHY 

N77-14408" National Aeronautics and Space Administration plug material which lies between the holes to form a thermocouple 

Ames Research Center Moffett Field Calf junction Official Gazette of the U S Patent Office 

ELECTRON MICROSCOPE APERTURE SYSTEM Patent 

Klaus Hememann inventor (to NASA) (NAS-NRC) Issued 7 Dec 

1976 6 p Filed 23 Jul 1973 Supersedes N74-12191 

(12 - 03 p 0293) Continuation-in-part of abandoned US Patent 

Appi SN-221670 filed 28 Jan 1972 Sponsored by NASA Pit" 

(NASA-Case-ARC- 10448-3 US-Patent-3.996 468 US-Patent-Appl-SN-318848. US:Patent-Class-250-96 

US-Patent-Appl-SN-221670) Avail US Patent Office CSCL .6 

2 14B 

An electron microscope including an electron source, a 32. 

condenser lens having either a circular aperture for focusing a 

solid cone of electrons onto a specimen or an annular aperture 

for focusing a hollow cone of electrons onto the specimen and Ae 

an objective lens having an annular objective aperture, for focusing 

electrons passing through the specimen onto an image plane 

are descnbed The invention also entails a method of making 

the annular objective aperture using electron imaging, electrolytic 

deposition and ion etching techniques 

Official Gafette of the U S Patent Office 

iz, '4 

eLeiR tmC" z N77-14411* National Aeronautics and Space Administration 

to, Pasadena Office, Calif 

to .METHOD AND APPARATUS FOR BACKGROUND SIGNAL CNOENSERLECS o ,REDUCTION IN OPTO-ACOUSTIC ABSORPTION MEASU REMENT Patent CON-EERTVRE PATE 4 Lars-Goeran Rosengren inventor (to NASA) (JPL) Issued 7 Dec 

SPEciEN-_ e. 1976 5 p Filed 25 Jul 1975 Supersedes N75-29383 (13 ­

OBJnEC~lVLENS- - 30 p 2520) Sponsored by NASA 

IstR uR ' (NASA-Case-NPO-13683-1. US-Patent-3,995.960 

CBEApUTE US-Patent-AppI-SN-599284 US-Patent-Class-356-204 

US-Patent-Class-250-343 US-Patent-Class-356-97 

InoE r . U S-Patent-Class-3S6-201) Avail US Patent Office CSCL 

24 14B 

The sensitivity of an opto-acoustic absorption detector is 

increased to make it possible to measure trace amounts of 

constituent gases A second beam radiation path is created through 

the sample cell identical to a first path except as to length 

aiternating the beam through the two paths and minimizing the 

detected pressure difference for the two paths while the beam 

wavelength is tuned away from the absorption lines of the sample 

Then with the beam wavelength tuned to the absorption line of 

any constituent of interest, the pressure difference is a measure 

of trace amounts of the constituent The same improved detector 

may also be used for measuring the absorption coefficient of 

known concentrations of absorbing gases 

Official Gazette of the U S Patent Office 

N77-14409* National Aeronautics and Space Administration 

Pasadena Office, Calif 

THERMOCOUPLE INSTALLATION Patent 

Walter B Powell (JPL) Lee R Potter (JPL) and Kenton S 

MacDavid, inventors (to NASA) (JPL) Issued 7 Dec 1976 8 p to 

Filed 22 Nov 1974 Supersedes N75-12276 (13 - 03 p 0297) MNTKr- Sponsored by NASA 2 A 25 .,or
 (NASA-Case-NPO-13540-1 US-Patent-3 996,070 ­

.. A US-Patent-Appl-SN-526450 US-Patent-Class-136-233. 


US-Patent-Class-136-232) Avail US Patent Office CSCL
 

14U
 8... A thermocouple assembly which includes a plug having a 

pair of small diameter holes near one end thereof which are Aspaced a small distance apart to leave a thin quantity of plug
 

material between the holes is presented There are a pair of
 

thermocouple wires extending through the different holes and
 

with the outer ends of the wires joined to the thin quantity of
 

35
 
35 INSTRUMENTATION AND PHOTOGRAPHY 

N77-17426* National Aeronautics and Space Administration 

Marshall Space Flight Center Huntsville Ala 

METHOD OF AND MEANS FOR TESTING A TAPE RECORD/ 

PLAYBACK SYSTEM Patent 

Gabriel R Wallace William E Salter (Sperry Rand Corp 

Huntsville. Ala ). Glenn D Weathers (Sperry Rand Corp Huntsville, 

Ala ) and Sidney S Gussow, inventors (to NASA) (Sparry Rand 

Corp. Huntsville. Ala) Issued 11 Jan 1977 6 p Filed 25 Mar 

1975 Supersedes N75-31418 (13 - 22 p 2787) Division of 

US Patent Appl SN-419831, filed 28 Nov 1973, US Patent-3 

875,500 

(NASA-Case-MFS-22671-2 US-Patent-4,003.084, 

US-Patent-Appl-SN-561956. US-Patent-Class-360-31, 

US-Petent-Class-360-25, US-Patent-Appl-SN-419831 

US-Patent-3 875,600) Avail US Patent Office CSCL 148 

A tape record/playback system was tested by first deriving 

an analog test signal and a band-limited digital reference signal 

from a pseudo-noise sequence generator driven by a clock signal 

It recorded the signals on respective tracks of the system during 

operation in a record mode During the playback mode of operation 

of the system a delayed analog reference signal without time 

base variations was reconstructed from the played back reference 

signal It was compared with the played back test signal in 

order to obtain an error signal that was a measure of the 

performance of the system 

Official Gazette of the U S Patent Office 

aKN Y? 

CHu Oi LUS-Patent-Class-73-432SD, 

N77-17430# National Aeronautics and Space Administration 

Langley Research Center Langley Station, Va 

MAGNETOMETER Patent Application 

William J Debnam Carl L Pales Jr Roger A Breckenridge, 

and Arthur V Pohm inventors (to NASA) (Iowa State Univ of 

Sci and Technol ) Filed 19 Mar 1976 13 p (NASA-Case-LAR- 11617-2 US-Patent-AppI-SN-668771) Avail 

NTIS HC A02/MF A01 CSCL 14B 

A magnetometer is described which has a flat miniature 

transducer capable of being scanned automatically The transducer 

has an active region of approximately 064 mm by 076 mm 

with good spatial resolution of magnetic fields as low as 0 02 oe Magnetic fields as close as o 08 mm from any relatively 

flat surface can be measured Its effectiveness is demonstrated 

in determining the presence of magnetic remanence in the 

magnetic strap keepers on memory planes of experimental and 

production line plated-wire memories, and in measuring the 

transverse magnetic field components at the surface of geological 

rock specimens NASA 

2z 1 ,------1 

S'ply r a 

15 

30 / 

ri / 

N77-18417* National Aeronautics and Space Administration 

Ames Research Center Moffett Field Calif 

SPRING OPERATED ACCELERATOR AND CONSTANT 

FORCE SPRING MECHANISM THEREFOR Patent 

George L Shillinger, Jr, inventor (to NASA) Issued 15 Feb 

1977 10 p Filed 24 Oct 1975 Supersedes N76-11441 

(14 - 02. p 0190) 

(NASA-Case-ARC-10898-1 US-Patent-4 007 623, 

US-Patent-Appl-SN-625732. US-Patent-Class-73-12 

US-Patent-Class-73-71 6) Avail 

US Patent Office CSCL 14B 

A spring assembly consisting of an elongate piece of flat 

spring material formed into a spiral configuration and a free 

running spool in circumscribing relation to which this spring is 

disposed was developed The spring has a distal end that is 

externally accessible so that when the distal end is drawn along a path the spnng unwinds against a restoring force present in 

the portion of the spring that resides in a transition region between a relatively straight condition on the path and a fully wound 

condition on the spool When the distal end is released the 

distal end is accelerated toward the spool by the force existing 

at the transition region which force is proportional to the 

cross-sectional area of the spring 

Official Gazette of the U S Patent Office 

1 

82 

.
 

36
 
35 INSTRUMENTATION AND PHOTOGRAPHY 

N77-19385" National Aeronautics and Space Administration pressure converts the pressure variations of the resonant gas Lyndon S Johnson Space Center Houston, Tex into electronic readout signals NASA 

FLUID MASS SENSOR FOR A ZERO GRAVITY ENVIRONMENT Patent 

G L Fogal inventor (to NASA) (GE Corp Philadelphia) Issued 

2 Nov 1976 5 p Filed 7 Nov 1974 Sponsored by NASA N 

(NASA-Case-MSC-14653-1 US-Patent-3 988 933 1 

US-Patent-Appl-SN-5218 16 US-Patent-Class-73-432R , -- X 

US-Patent-Class-177-1 US-Patent-Class-177-208) Avail US 

Patent Offfice CSCL. 14f8 

A sensor for measuring the mass of fluids is described which 

includes a housing having an inlet and outlet for receiving and 

dumping the fluid a rotary impeller within the housing for imparting Ln *. 'l O 

centrifugal motion to the fluid and a pressure sensitive transducer 

attached to the housing to sense the rotating fluid pressure I 

The fluid may be drawn into the housing by entrainment within a gas stream The resulting mixture is then separated into two 

phases gas and liquid The gas is removed from the housing 

and the pressure of the liquid, under centrifugal motion is sensed 

and correlated with the mass of the fluid 

Official Gazette of the U S Patent Office 

N77-19390fl National Aeronautics and Space Administration 

Pasadena Office Calif 

PASSIVE INTRUSION DETECTION SYSTEM Patent 

Application

Eric G Laue inventor (to NASA) (JPL) Filed 9 Feb 1977 

12 p 

(Contract NAS7-100) 

c, (NASA-Case-NPO-13804-1. US-Patent-Appl-SN-766999) Avail 

NTIS HC A02/MF A01 CSCL 14B 

An intrusion detection system is disclosed in which crystal 

oscillators are used to provide, a frequency which varies as a 

function of fluctuations of a particular environmental property of 

the atmosphere eg. humidity in the protected volume The 

system is based on the discovery that the frequency of an oscillator 

whose crystal is humidity sensitive varies within a known frequency band if an intruder enters the protected volume The variable 

frequency is converted into a voltage which is then filtered by a method which permits only voltage variations at frequencies within 

the known frequency band to activated an alarm The system 

inhibits alarm activation when the voltage frequency is below or 

above the known frequency band Author 

N77-19388"# National Aeronautics and Space Administration 

Ames Research Center Moffett Field Calif 

OPTICALLY SELECTIVE, ACOUSTICALLY RESONANT GAS 

DETECTING TRANSDUCER Patent Application A 

John Dimeff inventor (to NASA) Filed 22 Dec 1975 14 p 

(NASA-Case-ARC-10639-1 US-Patent-Appl-SN-643043) Avail 4 1 

NTIS HC A02/MF AOl CSCL 14B 

A gas analyzer is disclosed which responds to the resonant MX v 

absorption or emission spectrum of a specific gas by producing an acoustic resonance in a chamber containing a sample of the 

gas The device measures the amount of emission or absorption by measuring the strength of the acoustic resonance, eg, the 

maximum periodic pressure velocity or density achieved In the 

preferred embodiment a light beam is modulated *penodically at 

the acoustical resonance frequency of a closed chamber which 

contains an optically dense sample of the gas of interest Periodic 

heating of the gas by the light beam causes a cyclic expansion. 

movement, and pressure within the gas The amplitude of the 

excursions increases until an amplitude is reached where the 

increased losses involving the amplified motions compressions 

and thermal cycles are just sufficient to account for the cyclic radiation energy received through the window A differential 

37
 
35 INSTRUMENTATION AND PHOTOGRAPHY 

N77-20399" National, Aeronautics and Space Administration 

Ames Research Center Moffett Field Calif 

ALL SBY POINTING ATTITUDE CONTROL SYSTEM 

Patent 

Kenneth R Lorell and James Pt Murphy. inventors (to NASA) 

Issued 15 Mar 1977 11 p Filed 4 Oct 1973 Supersedes 


N73-32784 (11 - 23. p 2851)
 

(NASA-Case-ARC-10716-1 US-Patent-4 012018.
 

US-patent-Appl-SN-403696 US-Patent-Class-244-165
 

US-Patent-Class-235-1502 USUS-Patent-Class-235-15025 Paent ffic CSC 14B 

US-Patent-Ctass-244-3 21 US-Patent-Class-244-171) Avail 

US Patent Office CSCL 14B 

In a strapped-down gyroscope space vehicle attitude control 

system, a method and apparatus are provided for gyro drift and 

input axis misalignment error compensation employing a sun 

and a star tracker and breselected vehicle calibration maneuvers 

The outputs of two-axis strapped-down gyroscopes nominally 

aligned with the optical axis of the sun and star trackers are 

measured to provide gyro drift calibration roll pitch and yaw 

axis scale factors and values corresponding to the degree of 

nonorthogonality between the roll axis and the pitch and yaw 

gyro input axes and the nonorthogonality of the roll and pitch 

axes relative to the ya v axis The vehFcle is then rolled and 

yawed through precomputed angles as modified by the calibrated 

data stored in a digital computer, and acquires a target without 

recourse to external references 

Official Gazette of the U S Patent Office 

1o6 1--00 

/eI°o < sUS-Patent-Appl-SN-653422 09 ,o 

102 

0O14 

1TCH ROLL 

YAW 

N77-204004 National Aeronautics and Space Administration 

Ames Research Center Moffett Field Calif Patent 

METALLIC HOT WIRE ANEMOMETER Patent Fred R Lemos inventor (to NASA) Issued 15 Mar 1977 6 p 

Filed 5 Sep 1975 Supersedes N75-32426 (13 - 23. p 2918) 

(NASA-Case-ARC-10911-1. US-Patent-4011 756, 

US-Patent-AppI-SN-610802 US-Patent-Class-73-204 

US-Patent-Class-338-28) Avail US Patent Office CSCL 148 

A hot wire anemometer is described which has a body formed 

of heat resistant metal such as an alloy high in nickel content 

which supports a probe wire disposed in a V groove in the 

body The V groove contains a high temperature ceramic adhesive 

that partially encompasses the downstream side of the probe 

wire Mechanical and electrical connection to the probe wire is 

achieved through conductive support rods that are constructed 

of the same high temperature metal insulation between the 

body and the conductor rods being provided by a coating of an 

oxide of the same material which coating is formed in situ The 

oxide coating insulates the conductor rods from the body 

mechanically fixes the conductors within the body and maintains 

its integrity at elevated temperatures 

Official Gazette of the U S Patent Office 

14.­

2 

44 

4Z 

tO 

N77-20401* National Aeronautics and Space Administration 

Marshall Space Flight Center Huntsville Ala 

MOUNT FOR CONTINUOUSLY ORIENTING A COLLECTOR 

DISH IN A SYSTEM ADAPTED TO PERFORM BOTH 

DIURNAL AND SEASONAL SOLAR TRACKING Patent 

Lott W Brantley and Billy D Lawson inventors (to NASA) Issued 

15 Mar 1977 5 p Filed 29 Jan 1976 Supersedes N76-18679 

(14 - 09, p 1153) 

(NASA-Case-MFS-23267-1 US-Patent-4 US-Patent-Class-i126-270 011 854

US-Patent-Class-126-271 US-Patent-Class-250-203R) Avail 

US Patent Office CSCL 14B 

A collector dish is continuously oriented toward the sun in 

a system adapted to perform both diurnal and seasonal solar 

tracking The mount is characterized by a rigid angulated axle 

having a [near midportion supporting a collector drsh and 

oppositely extended end portions normally related to the 

midportion of the axle and received in spaced journals The 

longitudinal axis of symmetry for the midportion of the axle is 

coincident with a seasonal axis while the axes of the journals are coincident with a diurnal axis paralleling the earth's polar 

axis Drive means are provided for penodically displacing the 

axle about the diurnal axis at a substantially constant rate while 

other drive means are provided for periodically indexing the dish 

through 1 deg about the seasonal axis whereby the position of 

the dish relative to the axle is varied for accommodating seasonal 

tracking as changes in the angle of inclination of the polar axis 

occurs Official Gazette of the U S Patent Office 

.1 

" - .
 

- -. ./ ",
 

38
 
35 INSTRUMENTATION AND PHOTOGRAPHY 

N77-20408*# National Aeronautics and Space Administration the beam being respectively scanned in the first and second 

Lewis Research Center Cleveland Ohio directions to form X and Y traces on which are indicated the FLOW COMPENSATING PRESSURE REGULATOR Patent detected peak position in each of the scanning directions The 

Application source position is determined from an intersection of lines drawn Edward F 9aehf inventor (to NASA) Filed 21 Mar 1977 parallel to the X and Y axes and including the detected peak 10 p position of each trace NASA (NASA-Case-LEW-12718-1 US-Patent-AppI-SN-779428) Avsil 

NTIS HC A02/MF AO1 CSCL 14B 

An apparatus for regulating pressure of treatment fluid 

being supplied to a human or animal eye during ophthalmic procedures such as cataract surgery is disclosed Flow sensing 

and pressure regulating diaphragms are provided in a body to 

modulate a flow control valve The pressure regulating diaphragm 

is connected to the flow control valve to open the valve The 

flow sensing diaphragm is mechanically connected to the flow 

control valve and opens it because of the differential pressure on the diaphragm generated by a flow of incoming treatment 

fluid through an orifice in the diaphragm A bypass connection 

with a variable restriction is connected in parallel relationship to 

the-orifice to provide for adjusting the sensitivity of the flow 

sdnsing diaphragm NASA 

M~77-21392* National Aeronautics and Space Administration 

Pasadena Office. Calif 

ELECTROMAGNETIC TRANSDUCER RECORDING HEAD 

HAVING A LAMINATED CORE SECTION AND TAPERED 

GAP Patent 

Norman I Holt inventor (to NASA) (JPL) Issued 10 Oct 1972 

6 p Filed 24 Jul 1969 Sponsored by NASA 

(NASA-Case-NP0-1O71 1-1 US-Patent-S 697.705. 

CIS-Patent-Appi-SN-844315, US-Patent-Class-179-100 2C) 

Avail US Patent Office CSCL 14B 

An electromagnetic transducer head is provided which exhibits 

a wide band recording response characteristic, which comprises a plurality of separate magnetic head structures operating over different, overlapping frequency bands and formed into an integral assembly Each separate head structure of the assembly 

includes a magnetic core, and each core is provided with a gap The cores are positioned adjacent one another so that the 

gaps are aligned to define a common gap and the recording 

medium is drawn across the common gap The common gap is 

tapered, with the gap width of each aligned gap section being different from its adjacent section Separate windings are wound 

about the cores, each having different numbers of turns so as N77-20410 9 National Aeronautics and Space Administration to cover overlapping frequency ranges 

Goddard Inst for Space Studies Now York Official Gazette of the U S Patent Office 

APPARATUS (AND METHOD FOR DETERMINING THE 

POSITION OF A RADIANT ENERGY SOURCE Patent 

Application 

Gustave J Schaefer inventor (to NASA) (Hughes Aircraft Co 

Los Angeles) Filed 24 Mar 1977 50 p Sponsored by NASA '4 (NASA-Case-GSC-12147-1 US-Patent-AppI-SN-780873) Avail NTIS HC A03/AF A01 CSCL 140 -YO 

The position\of a terrestnal RF source is determined from a 

geostationary. synchronous satellite by scanning the beam of a narrow beam width antenna in first and second orthogonal I I, directions over a region including the source The peak level of 

energy transduced by the antenna in each of the scanning directions is detected and correlated with the scanning position 

of the beam by feeding the output of a detector responsive to 

the transduced signal to an indicator of an X-Y recorder The X 

and Y axes of the recorder are scanned in synchronism with 

39
 
35 INSTRUMENTATION AND PHOTOGRAPHY 

N77-21393* National Aeronautics and Space Administration teeter, and are divided by a divider giving an output which is a 

Pasadena Office. Calif function of the sample shadow NASA 

CRYOGENIC LIQUID SENSOR Patent 

Wallis M Tener. inventor (to NASA) (JPL) Issued 12 Jan 1971 

5 p Filed 3 Sep 1968 Sponsored by NASA 

(NASA-Case-NPO-10619-1 US-Patent-3,555.483 

U S-Patent-Appl-SN-757017 U S-Patent-Class-338-25) Avail 

US Patent Office CSCL 143 

A sensor unit for use in conjunction with a cryogenic vessel 

is provided and it may be used to respond selectively to the 

presence of a liquid in a two phase gas/liquid flow such as 

the overflow from a cryogenic vessel vent or cryogenic transfer 

tube The sensor is used to trigger relays and solenoid operated 

valves, so as to shut off the supply to the vessel when the 

cryogenic liquid starts to overflow The unit includes an electric 

resistance wire element which is wound on a porous tubular 

support member The electrical resistance of the wire element 

decreases to provide a desired electrical control effect when the 

porous tubular support member becomes saturated with the 

cryogenic liquid Official Gazette of the U S Patent Office 

N77-10517*# National Aeronautics and Space Administration 

Langley Research Center Langley Station Va 

TWO WAVELENGTH DOUBLE PULSE TUNABLE DYE LASER 

Patent Application 

Edward V Browell inventor (to NASA) Filed 3 Nov 1976 

11 p 

(NASA-Case-LAR- 12012-1. US-Patent-Appl-SN-738219) Avail 

-'S NTIS HC A02/MF AOl CSCL 20E 

i9y A laser that produces two pulses which are less than 500 

microseconds apart with each pulse tunable to a different 

wavelength is considered This laser was designed to eliminate 

several basic problems which arise when using the differential 

absorption LIDAR (DIAL) technique in remote detection of trace 

gases in the atmosphere NASA 

36 ' LASERS AND MASERS 'ne cct2 

Includes parametric amplifiers U i" t k .rU, 

i~6 M t&iiA CaL U 2

1$
 

N77-10516*# National Aeronautics and Space Administration 

Marshall Space Flight Center Huntsville. Ala 

LASER EXTENSOMETER Patent Application 

Phillip J Stocker (Rocketdyne Canoga Park Calif) and Harris 

L Marcus inventors (to NASA) (Rocketdyne Canoga Park. Calif) 

Filed 15 Oct 1976 10 p Sponsored by NASA J 

(NASA-Case-MFS-19259-1, US-Patent-AppI-SN-732630) Avail 

NTIS HO A02/MF A01 CSCL 20E N77-18429*ff National Aeronautics and Space Administration 

A laser extensometer capable of measuring the cross section Lewis Research Center Cleveland, Ohio 

of an object such as its diameter is discussed This device can IN-SITU LASER RETORTING OF OIL ShALE Patent 

conduct this measurement without actually physically touching Application 

said sample and while said sample is moving The extensometer Harvey S Bloomfield inventor (to NASA) Fileti 28 Jan 1977 

contains a source of coherent radiant energy directed through 15 p I 

an optics system to a sample object The portion of the beam (NASA-Case-LEW-12217-1 US-Patent-App-SN-763753) Avail 

not striking the sample is divided by a beam splitter into a NTIS HC A02/MF A01 CSCL 20E 

reference signal and a measurement signal Knife edges are spaced Oil shale formations were retorted in-situ and gaseous 

apart a distance larger than the dimensions of the sample and hydrocarbon products recovered by drilling two or more wells 

create beams carrying information of the beam intensity Knife into an oil shale fotmation After fracturing a region of oil shale 

edges are disposed in the path of both the reference and formation by directing a high energy laser beam into one of the 

measurement signal for trimming the signals to eliminate wells and focussing the laser beam into a region of oil shale 

non-uniform fringes Each signal passes into a separate photode- formation from a laser optical system compressed gas was forced 

40
 
into the well which supports combustion in the flame front ignited

by laser beam thereby retorting the oil shale and, recovering 

gaseous hydrocarbon products which permeate through the 

fractured oil shale from one of the auxiliary wells Author 

A 11 0visible 

1- 0 .. . . .. .. . . 

22 

N77-19416" National Aeronautics and Space Administration 

Pasadena Office Calif 

CONTINUOUS PLASMA LASER Patent 

Willard F Libby (Calif Univ Los Angeles) Carl A Jensen (Calif 

Univ Los Angeles), and Lowell L Wood inventors (to NASA) (Calif Univ Los Angeles) Issued 8 Feb 1977 10 p Filed 

10 Aug 1971 Supersedes N72-21693 (10 - 12. p 1646) 

Division of US Patent Appl SN-866442. filed 14 Oct 1969 

US Patent-3 617 804, which is a continuation-m-part of Abandoned US Patent Appl SN-479357.filed 12 Aug 1965 Sponsored 

by NASA 

(NASA-Case-xNP-04167-3 US-Patent-Appl-SN-17V0544 US-Patent-4.O07,43O. US-Patent-Class-331 -945 

36 LASERS AND MASERS 

N77-19418*# National Aeronautics and Space Administration 

Pasadena Office Calif 

CHARGE TRANSFER REACTION LASER WITH PREIONIZATION MEANS Patent Application 

James B Laudenslager (JPL) and Thomas J Pacala, inventors 

(to NASA) (JPL) Filed 12 Jul 1976 24 p (Contract NAS7-100) (NASA-Case-NPO-13945-1 US-Patent-AppI-SN-704180) Avail 

NTIS HC A02/MF A01 CSCL 20E 

A helium-nitrogen laser is described in Which energy in the 

range'is bmitted as a result of charge transfer reaction 

between helium ions and nftrogen molecules The helium and nitrogen are present in a gas mixture at several atm ospheres 

pressure with a nitrogen partial pressure on the order of less 

than one percent Prior to applying a discharge pulse to the gas 

mixture at the high pressure by means of a pair of main 

discharge electrodes, the gas mixture is preonized to prevent' arcing when the discharge pulse is applied NASA 

1130
 

-T I. 

N77-21424-# National Aeronautics and Space Administration 

Langley Research Center Langley Station, Va 

VOLUMETRIC DIRECT NUCLEAR PUMPED LASER Patent 

Application 

Nelson W Jalufka, Frank HohI, Russell J DeYoung (Vanderbilt 

Umv). and Michael D Williams inventors (to NASA) Filed 

19 19SD1971 Apr 1977 12 p

US-Patent-Cplss-3-94S US-Patent-Class-331-94DSPE(NASA-Case-LAR-12183-1, US-Patent Appl-SN788704) Avail US-Patent-Ap-SN-45) S-Patent-Class-331-95PE 

US-Patent-AppI-SM-479357) Avail US Patent Office CSCL 

2The apparatus includes a housing for confining a gas at 

ubT ophe ricppar esu res includ n a og s e of tors a gs agroup subatmospheri pressure and including a set of reflectors defnng an optical cavity At least one anode and cathode are positioned 

within the gas First control means control the, voltage applied 

to the anode and second control means independently control 

the temperature of the cathode The pressure of the gas is 

controlled by a third control means An intense monochromatici 

output is achieved by confining the gas in the housing at a controlled pre-determined reduced pressure independently 

controlling the temperature of the electron emitting cathode and 

applying predetermined controlled low voltage to the anode 

Official Gazette of the U S Patent Office 

NTIS 'HCAOZ/MF A01 CSCL20E 

A volumetric direct nuclear pumped laser was developed in 

which the gas is a mixture of SHe and a minonty gas from the 

of argon krypton, xenon, chlorine, nd fluorine The mixture 

of, SHe and the minority gas produces lasing with a minority gas concentration of from001 to 10 percent argon, 1 percent 

krypton 001 to 5 percent xenon and small concentrations of 

chlorine or fluorine Author 

io 

41
 
37 MECHANICAL ENGINEERING 

37 MECHANICAL ENGINEERING 

Includes auxiliary systems (non-power) machint 

elements and processes and mechanical equipment 

N77-11397* National Aeronautics and Space Administration 

Langley Research Center Langley Station, Va 

WELD-BONDED TITANIUM STRUCTURES Patent 

Robert W Vaughan (TRW Systems Group, Redondo Beach Calf) 

and John F Creedon inventors (to NASA) (TRW Systems Group 

Redondo Beach Calif) Issued 26 Oct 1976 5 p Filed 2 

Jan 1975 Sponsored by NASA 

(NASA-Case-LAR-11549-1. US-Patent-3 988 561 

US-Patent-AppI-SN-537979 U-Patent-Class-219-92 

US-Patent-Class-219-1 18) Avail US Patent Office CSCL 

Structurally stronger titanium articles are produced by a 

weld-bondling technique comprising fastening at least two plates 

'of titanium together using spotwelding and curing an adhesive 

interspersed between the spot-weld nuggets This weld-bonding 

may be employed to form lap joints or to stiffen titanium metal 

plates Author 

F77/771111ZZZ222 

N77-11398*# National Aeronautics and Space Administration 

Pasadena Office Calif 

HYDROGEN-FUELED ENGINE Patent Application 

Eugene A Laumanrl JiL) and Rollin K Reynolds inventors (to 

NASA) (JPL) Filed 27 Aug 1976 14 p 

(Contract NAS7-100) 

(NASA-Case-NPO-13763-1 US-Patent-Appl-SN-718268) Avail 

NTIS HC A02/MF AO1 CSCL 21A 

A hydrogen-oxygen fueled internal combustion engine is 

described herein, which utilizes an inert gas such as argon, as 

a working fluid to increase the efficiency of the engine eliminate 

pollution and facilitate operation of a closed cycle energy system 

In a system where sunlight or other intermittent energy source 

is available to separate hydrogen and oxygen from water the 

oxygen and inert gas are taken into a diesel engine into which 

hydrogen is injected and ignited The exhaust is cooled so that 

it contains only water and the inert gas The mnrt gas in the 

exhaust is returned to the engine for use with fresh oxygen, 

while the water in the exhaust is returned to the intermittent 

energy source for reconversion to hydrogen and oxygen NASA 

-. 

N77-11403*# National Aeronautics and Space Administration 

Marshall Space Flight Center, Huntsville, Ala 

SPHERICAL BEARING Patent Application 

William N Myers and Leopold A Hem inventors (to NASA) 

Filed 29 Oct 1976 16 p 

(NASA-Case-MFS-23447-1. US-Patent-Appi-SN-736909) Avail 

NTIS HC A02/MF A01 CSCL 131 

Components of the invention include an inner ball having 

an opening for receiving a shaft and a spherical outer surface 

and a circular outer race including a plurality of circumferentrally 

spaced sections extending around the inner ball for snugly receiving 

the inner ball A groove extends circumferentially around the 

race producing a thin wall portion there below which permits 

the opposed side portions to flex relative to the ball for 

maximizing the physical contact between the inner surface of 

the race and the spherical outer surface of the ball NASA 

2 r 

-xiO 

M 

/2 

/4 

N77-12402. National Aeronautics and Space Administration 

Marshall Space Flight Center, Huntsville, Ala 

MECHANICAL THERMAL MOTOR Patent 

Leopold A Hem and William N Myers, inventors (to NASA) 

Issued 26 Oct 1976 8 p Filed 30 Jun 1975 Supersedes 

N75-27561 (13 - 18, p 2276) 

(NASA-Case-MFS-23062-1 US-Patent-3,981,630, 

US-Patent-AppI-SN-691569, US-Patent-Class-60-527) Avail 

US Patent Office CSCL 131 

An apparatus is described for converting thermal energy such 

as solar energy into mechanical motion for driving fluid pumps 

and similar equipment The thermal motor comprises an inner 

concentric cylinder carried by a stationary core member The 

core member has a cylindrical disc plate fixed adjacent to a 

lower portion and extending radially from it An outer concentric 

cylinder rotatably carried on the disc plate defining a space 

between the inner and outer concentric cylinders A spiral tubular 

member encircles the inner concentric cylinder and is contained 

within the space between the inner and outer cylinders One 

portion is connected to the inner concentric cylinder and a second 

portion connected to the outer concentric cylinder A heated 

fluid is conveyed through the tubular member and is penodically 

cooled causing the tubular member to expand and contract This 

causes the outer concentnc cylinder to reciprocally rotate on 

the base plate accordingly The reciprocating motion of the 

outer concentric cylinder is then utilized to drive a pump member 

in a pump chamber Official Gazette of the U S Patent Office 

0 -0 

42
 
N77-13418* National Aeronautics and Space Administration 

Ames Research Center. Moffett Field Calif 

SMOKE GENERATOR Patent 

James R Rogers, inventor (to NASA) Issued 9 Nov 1976 

11 p Filed 1 Oct 1975 Supersedes N75-33278 (13 - 24, 

p 3031) 

(NASA-Case-ARC-I0905-1 US-Patent-3,990987 

US-Patent-AppI-SN-g18694 US-Patent-Class-252-359A. 

US-Patent-Class-219-300. US-Patent-Class-219-304, 

US-Patent-Class-239-171) Avail US Patent Office CSCL 

13K 

A smoke generator is disclosed which is particularly suitable 

for mounting on the wing tips of an aircraft and for conducting 

airflow studies The device includes a network of thermally insulated tubes for carrying a fluid which is used to produce 

smoke The fluid which need not be combustible is heated 

above its vaporization temperature by electric current which is 

passed through the fluid conduit tubes so that the tubes serve both as fluid conduits and resistance heating elements Fluid 

supply and monitonng systems and electrical control systems 

are also disclosed Official Gazette of the U S Patent Office 

N77-1342.6# National Aeronautc and Space Admnstration 

Lewis Research Center Cleveland Ohio 

AUTOMOTIVE GAS TURBINE FUEL CONTROL Potent 

Apphicatfon 

H S Gold inventor (to NASA) Filed 8 Nov. 1976 28 p 

(NASA-Case-LEW-12785-1 US-Patent-Appl-SN-739909) Avail 

NTIS HG A03/MF A01 CSCL 21E 

A fuel control useful for automotive-type gas turbines and 

particularly advanced gas turbines utilizing variable geometry 

components to imeprove mileage and reduceEQUATON pollution emission 

is disclosed The fuel control described o;
 compensates for fuel

density variations inlet temperature variations turbine vane 

actuation acceleration, and turbine breaking These parameters 

are utilized to control various onfices spool valves and pistons 

in a desired manner NASA 

STARTING 

~LIMIT OPERTIN R QUREDOfficial 

RANG ACEQUATION 

Vf/P 2, 	 STEiAOY
 

STATE
 

37 MECHANICAL ENGINEERING 

N77-14477* National Aeronautics and Space Administration 

Hugh L Dryden Flight Research Center Edwards, Calif 

FIFTH WHEEL Patent 

William P Albrecht and Ralph H Sparks, inventors (to NASA) 

Issued 7 Dec 1976 9p Filed 22 Jul 1975 Supersedes 

N75-29432 (13 - 20, p 2526) (NASA-Case-FRC-10081-1. US-Patent 1

3,995,877 

US-Patent-Appl-SN-598504, US-Patent-Class-280-432) Avail 

US Patent Office CSCL 131 

An improved fifth wheel for a tractor trailer rig, characterized, 

by a first subassembly including a wear plate was developed and 

modified to be mounted on a downwardly facing surface of a trailer A king pin projected normally therefrom and a second 

subassembly is adapted to be pivotally mounted onan upwardly facing surface of a tractor The king pin is brought into contiguous 

relation with the first sub assembly A receiver for capturing the 

king pin is included along with a safety means responsive to a failure of the king pin or its latching mechanism for joing the 

first subassembly with the second subassembly 

Official Gazette of the U S Patent Office 

(4 52 0 64 

N77-14478' National Aeronautics and Space Adminitration 

Langley Research Center. Langley Station Va 

PRECISION ALINEMENT APPARATUS FOR CUTING A 

WORKPIECE Patent 

Morriss L Holliday inventor (to NASA) Issued 7 Dec 1976 

4 p Filed 24 Oct 1975 Supersedes N76-13494 (14 - 04. 

p 0458) 

(NASA-Case-LAR-1 1658-1 US-Patent-S _G46 30 995 522. 

US-Patent-AppI-SN-625759. US-Patent-Class-83-467R 44 

US-Patent-Class-83-451) Avail US Patent Office CSCL 131 

A fixture is removably fixed to a workpiece providing a 

temporary' reference edge positioned parallel to a reference line 

and a known distance from 433
a reference point The temporary 14 reference edge it cooperation with a guide and a cutting blade 

of a cutting table enables the workpiece to be accurately cut 

with respect to the reference line and reference point without 

first having to cut a reference edge on the workpiece 

Gazette of the U S Patent Office 

22
 
___ ___ ___ ___ ___ ___ 

37 MECHANICAL ENGINEERING 

N77-14479* National Aeronautics and Space Administration from moving to its seat the eccentric lobe cannot be rotated to 

Goddard Space Flight Center, Greenbelt Md the closed position and the interlock prevents a disconnect 

REEL SAFETY BRAKE Patent NASA 

Clinton E Care inventor (to NASA) Issued 7 Dec 1976 9 p 

Filed 6 Nov 1975 Supersedes N76-13495 (14 - 04, p 0459) 

(NASA-Case-GSC- 11960-1 US-Patent-3995.789. L US-Patent-AppI-SN-629456, US-Patent-Class-242-193, 19 

US-Patent-Class-242,57 US-Patent-Class-242-187. , " 2 

US-Patent-Class-242-20A US-Patent-Class-242-210) Avail US '4 

Patent Office CSC[ 131 j~2a ,4 t 

A braking apparatus is described for a tape transport device 

having two stacked coaxial reels and feelers mounted in proximity ­

to the reels for sensing the tape being wound on each reel A ' -;--' ! 1t K 

device is mounted in proximity to adjacent central hubs of the "', ,' _ -­

reels to a simultaneously frictionally engage both hubs and brake 

both reels A mechanical actuator 0 coupled to both feelers 4 - -- _ 

and to the brake device The brake means comprises a pair of r ,u o
 rubber shoulders that extend in opposite directions relative to a L- (M 4'-<
 common axis and turns about the axis in response to either of
 

the feelers Official Gazette of the U S Patent Office
 

N77-15400*# National Aeronautics and Space Administration 

Goddard Space Flight Center Greenbelt Md 

ACTUATOR MECHANISM Patent Application 

William C Stange inventor (to NASA) Filed 6 Dec 1976 

it 	 28 P 

(NASA-Case-GSC-11883-2 	 US-Patent-Appl-SN-747675) Avail 

14.. .NTIS . .CAO./MFAOl 	 CSCL 131

oKJ An actuator mechanism is presented having a shaft rotatably 

V supported 'in the frame A positioning mechanism is coupled to the shaft for rotating the shaft in two rotary positions disposed 

re 	 approximately 180 deg apart A pair of plungers are coupled to 

the shaft each of which is responsive to a control signal for 

0900 	 applying bn-drectional rotation to the shaft respectively NASA 

iB
 

___ 	 -II40 

121' ,rIZr\4 

N77-17464' National Aeronautics and Space Administration 

Goddard Space Flight Center Greenbelt Md 

MAGNETIC BEARING SYSTEM Patent 

N77-15397*# Na'tional Aeronautics and Space Administration Philip A Studer, inventor (to NASA) Issued 4 Jan 1977 13 p 

Lyndon B Johnson Space Center Houston Tex Filed 3 Jul 1975 Supersedes N75-27386 (13 - 18 p 2256) 

POSITIVE ISOLATION DISCONNECT Patent Application (NASA-Case-GSC- 11978-1 US-Patent-4000929 

Morley V Friedell inventor (to NASA) (Martin Manetta Corp, US-Patent-Appl-SN-593142 US-Patent-Class-308-10) Avail 

'Denver) Filed 15 D -c 1976 18 p-	 US Patent Office CSCL 131 

(Contract NAS9-14376) A single magnetic radial bearing having a disc with an axis 

(NASA-Case-MSC-16043-1 US-Patent-Appi-SN-750792) Avail coincident with the bearing or shafh axis is described The bearing 

NTIS HC A02/MF A01 CSCL 13K passively supports an annulus which forms a radial gap between 

A disconnect composed basically of two halves each its inner circumferential edge and the circumferential edge of 

consisting of a poppet valve operable to isolate fluid with the disc The disc has a relatively large diameter compared to 

essentially zero fluid loss is described The two halves are coupled its length along the axis 

together by a quickly releasable coupling which may be either Official Gazette, of the U S Patent Office 

a coupling ring tightened or loosened by a twisting motion or 

a clamp operated by a pivoted handle In either case an interlock 

device is provided to prevent disconnecting the two halves until 

both valves are in closed condition The positive feature of the 

device is one requiring a valve closing step before a disconnect 

step and takes structural form in an eccentric lobe mounted on 

the valve operating stem If some obstruction prevents the poppet 

44
 
37 MECHANICAL ENGINEERING 

N77-17466"# National Aeronautics and Space Administration N77-19457* National Aeronautics and Space Administration 

Pasadena Office Calif Marshall Space Flight Center, Huntsville, Ala 

IMPROVED NOZZLE FOR USE WITH ABRASIVE AND/OR GUIDE FOR A TYPEWRITER Patent 

CORROSIVE MATERIALS Patent Application Robert D Dubois (Boeing Co Huntsville Ala) and George T 

Gerald S Perkins (JPL) Eugene V Pawlik (JPLI. and Wayne M Pinson inventors ito NASA) (Boeing Co, Huntsville, Ala ) Issued 

Phillips inventors (to NASA) (JPL) Filed 17 Feb 1976 25 p 2 Nov 1976 4 p Filed 9 Aug 1973 Supersedes N73-31438 

lCntract NAS7-100) (11 - 22, p 2676) Sponsored by NASA 

(NASA-Case-NPO-13"823-1 "US-Patent-Appi-SN-658487) Avail (NASA-Case-MFS-15218-1 US-Patent-3,989 136 

NTIS HC AO2/MF A01 CSCL 131 US-Patent-Appl-SN-387094 US-Patent-Class-197-188 

A nozzle composed of sintered ceramic materials having high US-Patent-Class-197-190) Avail. US Patent Office CSCL 131 

temperature oxidation resistance, high hardness and high abrasion The invention relates to accessories for typewriters, and more 

and corrosion resistance is described The ceramic may be a particularly to an improved guide for use in aligning a sheet of 

binary solid solution of a ceramic oxide and silicon nitnde, or paper preparatory to an application of typed indicia to selected 

preferably a ternary solid solution of a ceramic oxide, silicon spaces The device includes an aligning plate pivotally mounted 

nitride and aluminum nitride The ceramic oxide is selected from on a line guide having formed therein a plurality of aligned 

a group consisting of A1203, Y203 and Cr203, or mixtures apertures The plate is so positioned that an aperture is 

thereof Titanium carbide particles are dispersed in the ceramic positioned immediately above a target area for a type slug so mixture before sintermg The nozzles are encased' for protection that a slug will imprint a character in selected spaces 

from external forces while in use by a metal or plastic casing Official Gazette of the U S Patent Office 

NASA 

N77-19458* National Aeronautics and Space Administration 

N77-17467*# National Aeronautics and Space Administration 'Goddard Space Flight Center, Greenbelt Md 

Pasadena Office Calif 

IMPROVEMN T N12 

Application 

CYCLICAL BI-DIRECTIONAL ROTARY ACTUATOR Patent 

William C Stange inventor (to NASA) Issued 1 Mar 1977 p Filed 17 Jul 1975 Supersedes N75-29430 (13-20 

John Houseman inventor (to NASA) (JPL) 21 p (Contract NAS7-10) 

Filed 2 Apr 1975 p 2526) (NASAi-Case-GSC-11883-1 NASA-Case-GSC-11975-1 NASA-Case-GSC-11974-1 US-Patent-4010455 

(NASA-Case-NPO-13671-1 US-Patent-Appl-SN-564622) Avail US-Patent-Appl-SN-577 US-Patent-Class-340-224 

NTIS HC AO2/MF A01 CSCL 21A 

An internal combustion engine is described in which one or US-Patent-Class-310-4A US-Patent-Class-75-170 

US-Patent-Class-60-527, 

US-Patent-Class-337-334 

more of the cylinders of the engine are used for generating 

hydrogen rich gases from hydrocarbon fuels These gases are 

then mixed with air and injected into the remaining cylinders to 

US-Patent-Class-75-122 7) Avail US 

13d 

A thermally powered rotary actuator 

Patent Office CSCL 

is disclosed which is 

be used as fuel When heavy load conditions are encountered, used for positioning a shaft in first and second positions which 

hydrocarbon fuel may be mixed with the hydrogen rich gases are disposed 180 deg apart A pair of heat extensible spnngs 

and air and the mixture injected into the remaining cylinders as are attached to the shaft and to the frame of the rotary actuator 

fuel NASA for selectively rotating the shaft from one of its two positions to the other position upon the application of heat to one of the 

heat extensible springs The heat extensible springs are preferably 

Fa 

constructed from the alloy 55-Nitmol In the preferred embodiment 

detent mechanism is provided for locking the rotatable shaft 

AE in its two rotary positionsOfficial Gazette of the U S Patent Office 

-

45
 
37 MECHANICAL ENGINEERING 

N77-19459"# National Aeronautics and Space Administration 

Lyndon B Johnson Space Center, Houston, Tex 

SEQUENCING DEVICE UTILIZING PLANETARY GEAR SET 

Patent Application 

Walter T Appleberry, inventor (to NASA) (Rockwell Intern Corp. 

Downey Calif) Filed 25 Feb 1977 12 p (Contract NAS9-1400) (NASA-Case-MSC-19514-1 US-Patent-AppI-SN-7721681 Avail 

NTIS HC A02/MF A01 CSCL 131 

A planetary (epicyclic) gear set is provided with a continuously rotating input and individual outputs actuated respectively 

by the ring gear and planet gear carrier Latch means is positioned 

to selectively stop one of the ring gear and carrier members 

while starting the other to provide the desired sequential output. 

operation NASA 

2J
 

N77-20441*# National Aeronautics and Space Administration 

Marshall Space Flight Center Huntsville Ala 

APPARATUS FOR AUTOMATICALLY SPRAYING A COATING MATERIAL Patent Application 

Max H Sharpe William G Simpson and James M Carter 

inventors (to NASA) Filed 15 Feb 1977 19 p (NASA-Case-MFS-23506-2 US-Patent-AppI-SN-768794) Avail 

NTIS HC A02/MF AOl CSCL 13H 

A device is desenbed for automatically spraying a coating on an elongated body e g spraying ablative material on a space vehicle The space vehicle is rotated on a rotatable table 

in an upnght position A vertically extending suppo is positioned 

adjacent the space vehicle and has a housing which is automatically raised and lowered thereon A spray nozzle is mounted on 

the housing and is reciprocated up and down so as to spray a 

predetermined pattern on the space vehicle A spraying material 

is carried within a mixing vat and a supply pump is used for 

pumping the spraying material to the nozile NASA 

' 

W3 Let 

6 

38 QUALITY ASSURANCE AND 

RELIABILITY 

Includes product sampling procedures and techniques 

and quality control 

N77-17496* National Aeronautics and Space Administration 

Goddard Space Flight Center, Greenbelt Md 

METHOD AND APPARATUS FOR MEASURING WEB 

MATERIAL WOUND ON A REEL Patent 

Ronald M Muiler, inventor (to NASA) Issued 4 Jan 1977 

9 p Filed 4 Apr 1975 Supersedes N75-22687 (13 - 14 p

1652) 

(NASA-Case-GSC-11902-1 US-Patent-4 001 552, 

US-Patent-Appl-SN-565289 US-Patent-Class-235-92DN 

US-Patent-Class-235-S2CA US-Patent-Class-235-92CT 

US-Patent-Class-235-92H) Avail US Patent Office CSCL 

14B 

The method and apparatus for measuring the number of 

layers of a web material of known thickness wound on a storage 

or take-up reel is presented The method and apparatus are 

based on the principle that, at a relatively large radius the loci 

of layers of a thin web wound on the reel approximate a family 

of concentric circles having radii respectively successivey 

increasing by a length equal to the web thickness Tachometer 

pulses are generated in response to linear movement of the 

web and reset pulses are generated in response to rotation of 

the reel A digital circuit responsive to the tachometer and reset 

46 
44 ENERGY PRODUCTION AND CONVERSION 

pulses, generates data indicative of the layer number of any E RON 

layer of the web and of position of the web within the layer 4-irUIr 

without requiring numerical interpolation CONVERSION 

Official Gazette of the U S Patent Office 

Includes specific energy conversion systems, e 9 fuel 

cells and batteries global sources of energy, fossil fuels 

geophysical conversion hydroelectric power, and wind 

power 

For related information see also 07 Aircraft Propulion 

and Power. 20 Spacecraft Propulsion and Power. 28 

Propellants and Fuels and 85 Urban Technology and 

Transportation 

N77-10635* National Aeronautics and Space Administration 

Marshall Space Flight Center Huntsville, Ala 

PHOTOVOLTAIC CELL ARRAY Patent 

Jon T Ehason inventor (to NASA) (Sperry Rand Corp Huntsville. 

Ala) Issued 5 Oct 1976 4 p Filed 25 Apr 1975 Supersedes 

N75-22900 (13 - 14, p 1677) Sponsored by NASA 

(NASA-Case-MFS-22458-1 US-Patent-3,984,256 

US-Patent-Appl-SN-571458. US-Patent-Class-136-89. 

US-Patent-Class-29-572) Avail US Patent Office CSCL 10A 

A photovoltaic cell array consisting of parallel columns of 4O silicon filaments is described Each fiber is doped to produce an EARTH RESOURCES inner region of one polarity wpe and an outer region of an 

opposite polarity type to thereby form a continuous radial semi 

Includes remote sensing of earth resources by aircraft conductor junction Spaced rows of electrical contacts alternately 

and spacecraft photogrammety and aenal photography connect to the inner and outer regions to provide a plurality of 

For instrumentation see 35 Instrumentation and electrical outputs which may be combined in parallel or in 

Photography series Official Gazette of the U S Patent Office 

N77-10584 National Aeronautics and Space Administration 

Lyndon B Johnson Space Center Houston Tex 

OPTICAL PROCESS FOR PRODUCING CLASSIFICATION 

MAPS FROM MULrISPECTRAL DATA Patent 2 

Richard E Haskell inventor (to NASA) (Oakland UmIv) Issued 

5 Oct 1976 12 p Filed 30 Aug 1974 Supersedes N74-32780 (12 - 22. p 2690) Sponsored by NASA 

(NASA-Case-MSC-14472-1 US-Patent-3 984 671 20
 

US-Patent-Appl-SN-602138 US-Patent-Class-235-181
 

US-Patent-Class-340-146 3P US-Paient-Class-340-1463Q) 24
 

Avail US Patent Office CSCLOSB 24
 

A method of producing single-class and multi-class com- I 

posite classification maps from multispectral data is provided 1 6 

The multispectral data is transformed into a binary matrix format 

which is then encoded on an optical medium such as photographic 34 

film The encoded data is holographically correlated with coded 22 2G 

patterns representing selected spectral signatures to produce 

isignal-class classification maps Several single-class maps are 10 

optically superimposed to produce multi-class composite classification maps Official Gazette of the U S Patent Office 

47
 
44 ENERGY PRODUCTION AND CONVERSION 

N77-10636" National Aeronautics and Space Administration shingle which may be applied in the usual way and an array of 

Pasadena Office Calif cooperating solar cells from which electrical energy may be 

HYDROGEN-RICH GAS GENERATOR Patent collected NASA 

John Houseman (JPh)and Donald J Cennrminventors (to NASA) 

(JPL) Issued 28 Sep 1976 15 p Filed lOJul 1974 Supersedes

N76-18460 (14 - 09. p 1127) Sponsored by NASA
 

(NASA-Case-NPO-13560-1, NASA-Case-NPO-13561-1 /r,
 

US-Patent-3 982 910, US-Patent-Appi-SN-487156 .......
 = --­ US-Patent-Class-48-61 US-Patent-Crass-23-281 

US-Patent-Class-48-116. US-Patent-Class-48-117
 

US-Patent-Class-48-197R US-Patent-Class-48-212
 

US-Patent-Class-l3-3 US-Patent-Cass-252-373,
 

US-Patent-Class-423-650, US-Patent-Class-431-1 1,
 US-Patent-Class-431-41 US-Patent-Class-431-116
 

US-Patent-Class-431-162 US-Patent-Class-431-170) Avail US ' X..II.2 
 F ,
 Patent Office CSCL 108
 

A process and apparatus are described for producing ". -'y-"-.-" I \ " ''1 i\ - \ 

hyd-ogen-rich product gases A spray of liquid hydrocarbon is \J / ' ­ mixed with a stream of air in a startup procedure and the mixture ii 

is ignited for partial oxidation The stream of air is then heated 

by the resulting combustion to reach a temperature such that a signal is produced The signal triggers a two way valve which 

directs liquid hydrocarbon from a spraying mechanism to a 

vaporizing mechanism with which a vaporized hydrocarbon is 

formed The vaporized hydrocarbon is subsequently mixed with 

the heated air in the combustion chamber where partial oxidation 

takes place and hydrogen-rich product gases are produced 

Official Gazette of the U S Patent Office 

N77-12511-# National Aeronautics and Space Administration 

Marshall Space Flight Center Huntsville Ala 

METHOD AND APPARATUS FOR RECONDITIONING 

NICKEL-CADMIUM BATTERIES Patent Application 

Robert E Kapustka inventor (to NASA) Filed 24 Nov 1976 

13 p I (NASA-Case-MFS-23270-1 US-Patent-Appl-SN-744573) Avail 

A method and apparatus for reconditioning batteries are 

described which can be applied in reconditioning nickel-cadmium 

batteries in outer space A DC-DC converter monitors the output 

of each cell of a Ni-Cd battery through the use of N low voltage outputs connected in parallel to the converter The open circuit 

output voltage of each of these outputs is less than the battery 

cell voltage Because each output consists of two rectifier diodes 

28 30 the cell voltage will normally reverse bias (turn off) the 

two diodes in each output If however the cell voltage falls 

below the voltage of its corresponding output the voltage from 

a transformer winding in the converter would forward bias the 

diodes and would assume the load This would prevent the cell 

from reaching zero voltage and reversing rts polarity during normal 

operation or reconditioning NASA 

National Aeronautics and Space Administration Jr. 

N77-106459# 

Lewis Research Center Cleveland Ohio
 

SOLAR CELL SHINGLE Patent Application .
 cu_ StOIN 

Americo F Forestieri, Anthony F Ratajczak. and Leroy G Sidorak 0 '1 iI'tI - WDESifi 

inventors (to NASA) Fired 24 Aug 1976 11 p ,i-­

(NASA-Case-LEW-12587-1 US-Patent-Appl-SN-717319) Avail 

NTIS HC A02/MF AOl CSCL 1OA Z7 M, N,°

A solar cell shingle may be made of an array of solar cols JJ on a lower portion of a substantially'rectangular shingle substrate U 2 OULTOR 

made of fiberglass croth or the like The solar cells may be 

encapsulated in fluorinated ethylene propylene or some other TELE 

weatherproof translucent or transparent encapsulant to form a T f t 

;ombined electrical module and a roof shingle The interconnected 

solar cells are connected to connectors at the edge of the substrate 

through a connection to a common electrical bus or busses An 

overlap area is arranged to receive the overlap of a cooperating similar shingle so that the cell portion of the cooperating shingle 

may overlie the overlap area of the roof shingle Accordingly 

the same shingle serves the double function of an ordinary roof 

48
 
44 ENERGY PRODUCTION AND CONVERSION 

N77.14580* National Aeronautics and Space Administration to desired parameters and conditions 

Lewis Research Center Cleveland Ohio Official Gazette of the U S Patent Office 

SILICON NITRIDE COATED. PLASTIC COVERED SOLAR 

CELL Patent 

"Jacob D Broder inventor (to NASA) Issued 7 Dec 1976 4 p 

Filed 30 Dec 1975 Supersedes N76-14613 (14 - 05 

p 0604) . '" 

LNASA-Case-LEW-111496-I, US-Patent-3,996 067 

US-Patent-Appl-SN-645508, US-Patent-Class- 136-89 

US-Patent-Class-204-192) Avail US Patent Office CSCL t . 

A non-oxide anti-reflective coating was used with a transpar- ,,
 

ent plastic cover of fluorinated ethylene propylene copolymer anr
 a silicon solar cell to increase the resistance to damage caused
 

by electron bombardment -=
 

Official Gazette of the U S Patent Office
 

2 

so 2 

is1z N77-16490* National Aeronautics and Space Administration 

Lewis Research Center Cleveland Ohio 

ENCAPSULATED SOLAR CELL MODULES Patent AppLication 

Evelyn Anagnostou and Amenco F Forestieri inventors (to NASA) 

Filed 30 Nov 1976 9 p 

(NASA-Case-LEW-12185-1 US-Patent-Appl-SN-746269) Avail 

NTIS HC A02/MF AO1 CSCL 10A 

A procedure is described in which the electrical connections 

to solar cells in a module are made at the same time the cells are encapsulated for protection The encapsulating material is 

embossed to facilitate the positioning of the cells during 

assembly NASA 

N77-146S1* National Aeronautics and Space Administration
 

Lewis Research Center Cleveland, Ohio
 

ELECTRICALLY RECHARGEABLE REDOX FLOW CELL 24
 

Patent 

Lawrence H maller, inventor (to NASA) Issued 7 Dec 1976
 

6 p Filed 22 Aug 1975 Supersedes N75-32586 (13 - 23
 

p 2938)2
 (NASA-Case-LEW-12220-1 US-Patent-3,996 064 20
 

US-Patent-ApplSN-606891, US-Patent-Class-3ZO-2,
 

US-Patent-Class-429-23 US-Patent-Class-429-34) Avail US o0
 

Patent Office CSCL 1OC
 

A bulk energy storage system is designed with an electrically 4
 

rechargeable reduction-oxidation (REDOX) cell divided into two
 

compartments by a membrane each compartment containing 12
 

an electrode An anode fluid is directed through the first
 

compartment at the same time that a cathode fluid is directed
 

through the second compartment Means are provided for
 

circulating the anode and cathode fluids and the electrodes are
 

connected to an intermittent or non-continuous electrical source,
 

which when operating supplies current to a load as well as to
 

the cell to recharge it Ancillary circuitry is provided for
 

disconnecting the intermittent source from the cell at prescribed
 

times and for circulating the anode and cathode fluids according
 

49
 
44 ENERGY PRODUCTION AND CONVERSION 

N77-15493*# National Aeronautics and Space Administration 

John F Kennedy Space Center Cocoa Beach Fla 

ILLUMINATION CONTROL APPARATUS FOR COMPENSATING SOLAR LIGHT Patent Application 

Lester J Owens inventor (to NASA) Filed 23 Dec 1976 

20 p 

(NASA-Case-KSC-11010-1 US-Patent-AppI-SN-753977) Avail 

NTISH.C A02/MF A01 CSCL 1A 

An illumination control apparatus for supplementing light from 

solar radiation with light from an artificial light source was designed 

to compensate for periods of insufficient levels of solar light to 

maintain a desired illumination level within an interior space 

The apparatus comprises an artificial light source connected to an electncal power source a switch for selectively energizing 

the light source, and an actuator for controlling the on-off operation 

of the switch A light sensor is connected to the actuator to 

control it in response to the illumination level of the interior 

space A limit switch is carried adjacent to actuator to limit the 

movement of the actuator within a predetermined range This 

prevents further movement during detection of erroneous 

illumination conditions NASA 

5 ' ioo 31 T . i , , LLJj L I I I Lj r-ko.
 Z-.

42 T3 

N77-17564-# National Aeronautics and Space Administration 

Lewis Research Center Cleveland, Ohio 

SOLAR CELL COLLECTOR AND METHOD FOR PRODUCING 

SAME Patent Application 

John C Evans, Jr, inventor (to NASA) Filed 22 Feb 1977 

16 p (NASA-Case-LEW-12552-1 US-Patent-Appl-SN-776869) Avail 

NTIS HC A02/MF AOl CSCL 10A 

A method is described which permits the formation of highly 

conductive metal channels in a continuous pattern of any desired 

design within a transparent conductive mixed oxide layer which 

covers and protects an underlying photovoltaic substrate The 

result is a sufficient collector system for the current generated 

by incident photon radiation NASA 

II . .
 

N77-17565*# National Aeronautics and Space Administration 

Lewis Research Center Cleveland Ohio 

IM1PROVED BACKWALL CELL Patent Application 

Henry W Brandhorst Jr. inventor (to NASA) Filed 19 Jan 

1977 15 p 

(NASA-Case-LEW-12236-1 US-Patent-AppI-SN-760771) Avail 

NTIS HC A02/MF AOl CSCL IOA 

A solar cell is described having a first material of one 

conductivity type with one face having the same conductivity 

type more heavily doped to form a field region to receive the 

radiant energy A layer of opposite conductivity type or a metallic 

layer forming a Schottky barrier is applied to the opposite face 

A gridded contact pervious to the radiant energy may be applied 

to the region of the more heavily doped material for electrical 

contact The device allows separate control of the junction, either 

the p-n junction or the Schottky diode junction and the efficient 

collection of light This efficiency is improved, because the high 

conductivity region has low sheet resistance and a low surface 

recombination velocity with enhanced effective diffusion lengths 

in bulk NASA 

N77-18560*# National Aeronautics and Space Administration 

Lewis Research Center Cleveland Ohio 

FORMULATED PLASTIC SEPARATORS FOR SOLUBLE 

ELECTRODE CELLS Patent Application 

Dean W Sheibley. inventor (to NASA) Filed 10 Mar 1977 

22 p 

(NASA-Case-LEW-12358-1 US-Patent-Appl-SN-776146) Avail 

NTIS HC A02]MF AOl CSCL 10C 

A rubber on transport sheeting material formulated with o 

without a flexible and porous substrate is described for use as the membrane between the acid compartments of a redox couple in a bulk electrical energy storage system The membrane exhibits 

minimal increases in resistivity with the passage of time and 

prevents the accumulation of unequal amounts of water between 

the two sides of the redox cell NASA 

... II
 

"tReproduced from 

best availaMe copy. 5 
44 ENERGY PRODUCTION AND CONVERSION
 

N77-19671* National Aeronautics and Space Administration N77-19581"# National Aeronautics and Space Administration Lewis Research Center Cleveland 0hio Pasadena Office Calif SOLAR CELL ASSEMBLY Patent DUAL MEMBRANE. HOLLOW FIBER FUEL CELL Patent Henry W Brandhorst. Jr inventor (to NASA) Issued 2 Nov Application 1976 5 p Filed 30 Sep 1974 Supersedes N74-33484 (12 - John D Ingham (JPL) and Daniel D Lawson inventors (to NASA) 23 p 2775) (JPLI Filed 3 Feb 1977 12 p (NASA-Case-LEW-1 1549-1, US-Patent-3,999 541, (Contract NAS7-100) US-Patent-Appl-SN-510677 US-Patent-Class-136-89) Avail (NASA-Case-NPO-13732.1 US-Patent-Appl-SN-76513) Avail US Patent Office CSCL 1OA NTIS HC A02/MF A0l CSCL 10A

of a 

The solar cell assembly includes a solar cell having an overlay A gaseous fuel cell is described which includes a pair of semJ-transparent coating of a metal such as aluminum or electrodes formed by open ended, ion-exchange hollow fibers, silver which covers the entire surface thereof The purpose of each having a layer of metal catalyst deposited on the inner the coating is to lower the amount of incident radiation on the surface thereof and large surface area current collectors such as cell and thereby lower cell temperature The use of the braided metal mesh in contact with the metal catalyst layer A semi-transparent coating over the entire cell surface uniformly fuel cell results when the electrodes-are immersed in electrolyte limits incident radiation and hence reduces cell heat without and electrically connected As hydrogen and oxygen flow any temperature gradients The coating also lowers series cell through the bore of the fibers oxidation and reduction reactions resistance The coating may be directly deposited on the cell develop an electrical, potential Because the hollow fiber surface or on the undersurface of a cover plate bonded to the configuration provides large electrode area per unit volume and cell Official Gazette of the U S Patent Office intimate contact between fuel and oxidizer at the interface, and 

because of the low internal resistance of the electrolyte high power densities can be obtained NASA 

.-J77-19579 q National Aeronautics and Space Administration 

Pasadena Office. Califf 

A NprJ-TRACKING SOLAR ENERGY COLLECTOR SYSTEM Patent Applcatomn 

M Kudret Selcuk. inventor (to NASA) (JPL) Filed 2 Mar 1977 

17 p 

(Contract NAS7-l100) 

(NASA-Case-NPO-13813-1 NASA-Case-NPO-13914-1I 

US-Patent-Appl-SN-765139) Avail NTIS H-C A02/MF A01 

CSCL 10A 

A solar energy collector system is descnbed in which an improved concentrator is used for directing incident rays of solar 

energy on parallel vacuum-jacketed receivers or absorbers A 

plurality asymmetncaltnangular of individually cross-sectonalconfiguration mounted reflector modules of a common are supported N77-2O555*# National Aeronautics and Space Administration 

for independent reorentation A plurality of asymmetric vee trough Pasdena Office Calif 

concentrators is defined NASA SOLAR ENERGY COLLECTION SYSTEM Patent Applcation 

*- -/_ "Charles G Miller (JPL) (Contract NAS7-1 00) and James B Stephens inventors (to NASA) (JPL) Filed 25 Jan 1977 57 p 

UNTIS S(NASA-Case-NPO-13579-2 US-Patent-Appl-SN-762362) Avail i-IC A04/MF A0l CSCL 1OA 

A fixed, linear ground based prary reflector having an ipvextended curved sawtooth-contoured surface covered with a mtalized polymeric reflecting material, reflects solar energy to 

a maovably suppored coector that is kept at the concentrated 

- constructed line focus of by the a reflector process primary utilzig Thewell-known primary reflector freeway may paving be

" 
 machinery The solar energy absorber is preferably a fluidtransporting piperfficient utilization leading to high temperatures 

from the reflected solar energy is obtained by cylindrical shaped 

secondary reflectors that direct off-angle energy to the absorber 

pipe A sedatim arranoeuent of cyidrical secondary reflector 

51 
44 ENERGY PRODUCTION AND CONVERSION 

stages and Spot forming reflector stages produces a high 

temperature solar energy collection system of greater efficiency 

NASA 

W 

N77-20566* National Aeronautics and Space Administration 

Pasadena Office Calif 

LOW COST SOLAR ENERGY COLLECTION SYSTEM Patent 

Application

Charles G Miller (JPL) and James B Stephens inventors (to 

-NASA) (JPL) Filed 25 Jan 1977 22 p 

(Contract NAS7-100) 

NASA-Case-NPO-13579-3 US-Patent-Appl-SN-762363) Avail 

NTIS HCA02/MFA01 CSCL 1OA 

A fixed linear ground based primary reflector having an 

extended curved sawtooth contoured surface covered with a metalized polymeric reflecting material reflects solar energy to 

a movably supported collector that is kept at the concentrated 

line focus of the reflector priaiary The primary reflector may be 

constructed by a process utilizing well known freeway paving 

machinery NASA 

Wh XX 

IN77-17609*# 

(IILangley ' * 

N77-21666* National Aeronautics and Space Administration 

John F Kennedy Space Center Cocoa Beach Fie 

OCEAN THERMAL PLANT Patent Application Lester J Owens inventor (to NASA) Filed 29 Mar 1871 

Is p 

(NASA-Case-KSC-11034-1 US-Patent-Appl-SN-782481) Avail 

NTIS HCAO2/MFAO1 CSCL10A 

An ocean thermal plant consisting of a floating energy 

converter utilizing large volumes of sea water to produce electrical 

power is described In this plant a fluid working medium is 

pumped to an evaporator where it is heated by a flow of warm 

surface sea water The fluid in liquid form boils to a pressurized 

gas vapor which is routed to drive a turbine that in turn, drives 

a generator for producing electricity The gas vapor then enters a condenser immersed in cold sea water pumped from lower 

depths The gas vapor condenses to its original liquid form and 

is then pumped to the evaporator to repeat the cycle Modular 

components can be readily interchanged on the ocean thermal 

unit and inlet pipes for the sea water are provided with means 

for maintaining the pipes in alignment with the oncoming current 

The modular construction allows for the testing of various 

components to provide a more rapid optimization of a standardized plant NASA 

45 ENVIRONMENT POLLUTION 

Includes air noise thermal and water pollution, environment monitoring and contamination control 

National Aeronautics and Space Administration 

Research Center Langley Station Va A METHOD FOR AEROSOL ANALYSIS BY THERMOLUMIIA iNESCENCEPatetApplication 

"//iA Robert S Rogowski and Edward R Long. Jr inventors (to NASA) 

/11 f .- /.dzt Filed 29 Dec 1976 16 p 

(NASA-Case-LAR-12046-1 US-Patent-Appl-SN-755310) Avail 

NTIS HC A02/MF A01 CSCL 13B 

A method is described for detecting and measuring peak 

thermoluminescence of a test sample to serve as an aid in 

52 
52 AEROSPACE MEDICINE
 

determining the source of aerosols in a specific geographic 52AEROSPACE MED!CINE area NASA 

Includes physiological factors, biological effects of 

radiation and weightlessness 

- N77-10780- National Aeronautics and Space Administration 

- ELETROST' Ames Research Center, Moffett Field Calif ii THERMISTOR HOLDER FOR SKIN TEMPERATURE MEAS­

,I UREMENTS Patent 

John E Greenleaf and Bill A Williams. inventors (to NASA)

L Issued 5 Oct 1976 4 p Filed 29 Sep 1975 Supersedes N75-33642 (13 - 24 p 3077) 

(NASA-Case-ARIC-10855-1, US-Patent-3,983.753 

US-Patent-Appl-SN-617612 US-Patent-Class-73-343R 

US-Patent-Class-128-2H) Avail US Patent Office CSCL 06B An improved thermistor holder structure isdisclosed which
 

facilitates skin-temperature measurement The device includes a 

cylindrical plastic housing with tab extensions that permits the 23 apparatus to be held to a skin surface by suitable elastic members 

or the like Ventilation openings are provided in the plastic housing 

to permit air circulation An adjustable resilient metal arm with a thermistor holding cup formed at one end is secured to the 

interior surface of the plastic housing such that the holding cup 

is located at the center of the housing A thermistor temperature sensor is inserted into and held in the cup by interference fit 47METEOROLOGY AND Official Gazette of the US Patent Office 

CLIMATOLOGY 0 

Includes weather forecasting and modification 

238< 

N77-10753* National Aeronautics and Space Administration 

Marshall Space Flight Center Huntsville Ala -

WIND MEASUREMENT SYSTEM Patent 

William C Cliff Robert M Huffaker Werner K Dahm James a 

A L Thomson (Physical Dyn Inc Berkeley, Calif) Thomas A .7f 

I.awrence (LMSC Huntsville. Ala), Michael C Krause (LMSC

Huntsville Ala) and David J Wilson inventors (to NASA) (LMSC 

Huntsville, Ala) Issued 5 Oct 1976 5 p Filed 3 Dec 1975 

Supersedes N76-13701 (14 -04 p 0484) (NASA-Cse.MFS-23362-1 US-Patent-3 984 685 N77-14735 National Aeronautics and Space Administration 

US-Patent-AppI-SN-637268 US-Patent-Class-250-339 Marshall Space Fight Center Huntsville. Ala 

US-Patent-Class-250-338 US-Patent-Class-250-347 ACTUATOR DEVICE FOR ARTIFICIAL LEG Patent US-Patent-Class-356-106R) Avail US Patent Office CSCL John L Burch, inventor (to NASA) Issued 7 Dec 1976 7 p 

04B Filed 12 Sep 1975 Supersedes N75-32767 (13 - 23. 

A system for remotely measuring vertical and horizontal winds p 2963) present in discrete volumes of air at selected locations above (NASA-Case-MFS-23225-1 US-Patent-3.995324 . the ground is described A laser beam is optically focused in US-Patent-Appl-SN-612965. US'Patent-Class-3-1 2 

range by a telescope and the output beam is conically scanned US-Patent-Class-3-14) Avail US Patent Office CSCL 068 

at an angle about a vertical axis The backscatter or reflected An actuator device is described for moving an artificial leg light from the ambient particulates in a volume of air the focal of a person having a prosthesis replacing an entire leg and hip volume is detected for shifts in wavelength and from these, joint The device includes a first articulated hip joint assembly honzontal and vertical wind components are computed carried by the natural leg and a second articulated hip joint Official Gazette of the U S Patent Office assembly carried by the prosthesis whereby energy from the 

movement of the natural leg is transferred by a compressible fluid from the first hip joint assembly to the second hip joint -- assembly for moving the artificial leg 

...... o-- - ... .. Official Gazette of the U S Patent Office 

I,
 l ~ %/'10 j r 28 76 2 

-30 

12 481 

65-" 50 

114 3? 

53 
52 AEROSPACE MEDICINE 

N77-14736* National Aeronautics and Space Administration 

Ames Research Center, Moffett Field Calif 

LIQUID COOLED BRASSIERE AND METHOD OF DIAGNOS. 

ING MALIGNANT TUMORS THEREWITH Patent 

William Elkins (Acurex Corp), Bill Alvin Williams and Ernest 

Glenn Tickner, inventors (to NASA) (Acurex Corp) Issued 7 Dec 

1976 8 p Filed 27 Jan 1976 Supersedes N76-18782 (14 -

O9. p 1168) (NASA-Case-ARC-11007-1 US-Patent-3,995,621 

US-Patent-AppI-SN-652948. US-Patent-Class-128-2H. 

US-Patent-Class-128-379, US-Patent-Class- 128-400. 

US-Patent-Class-128-402) Avail US Patent Office CSCL 

068B 

A device for enhancing the detection of malignant tissue in 

the breasts of a women was described A brassiere-like garment 

which is fitted with a pair of liquid-perfused cooling panels which 

completely and compliantly cover the breasts and upper torso was studied The garment is connected by plastic tubing to a 

liquid cooling system comprising a fluid pump, a solenoid control 

valve for controlling the flow of fluid to either the cooling unit 

or the heating unit a fluid reservoir a temperature sensor in 

the reservoir, and a restrictor valve to control the pressure in 

the garment inlet cooling line 

Official Gazette of the U S Patent Office 

VM SL.E /45
 

TOi ST | RtrR io 

c. ETERS 

WTLET P ., SUS-Patent-AppI-SN-613734 LiE, 

C4T1 49 

.E1Ei'S.A 

4a 

- pLW~iJG CONNECTONS 

--aEcrsca coNNiSs 

N77-14737"n National Aeronautics and Space Administration 

Lyndon B Johnson Space Center Houston rex 

METHOD AND SYSTEM FOR IN viva MEASUREMENT OF 

BONE TISSUE USING A TWO LEVEL ENERGY SOURCE' 

Patent
 

John R Cameron (Wisconsin U , Madison) and Philip F Judy 

inventors (to NASA) (Wisconsin U Madison) Issued 7 Dec 

1976 8 p Filed 11 Mar 1975 Supersedes N75-21948 (13 

- 13, p 1552) Sponsored by NASA 

(NASA-Case-MSC-14276-1. US-Patent-3,996,471 

US-Patent-Appl-SN-557430 US-Patent-Class-250-444, 

US-Patent-Ciass-250-498 US-Patent-Cass-250-363R) Avail 

US Patent Office CSCL 06B 

Methods and apparatus are provided for radiologically 

determining the bone mineral content of living human bone tissue 

independently of the concurrent presence of adipose and other 

soft tissues A target section of the body of thesubject is irradiated 

with a beam of penetrative radiations of preselected energy to 

determine the attenuation of such beam with respect to the 

intensity of each of two radiations of different predetermined 

energy levels The resulting measurements are then employed 

to determine bone mineral content 

Official Gazette of the U S Patent Office 

S
 

jr.[ .J S 


'-TB 

T 

N77-147389 National Aeronautics and Space Administration 

John F Kennedy Space Center Cocoa Beach Fla 

PERCUTANEOUS CONNECTOR DEVICE Patent 

Walter 5 Parsons, inventor (to NASA) Issued 7 Dec 1976 

6 p Filed 16 Sep 1975 Supersedes N76-19816 (14 - 10, 

p 1303) (NASA-Case-KSC-10849-1. US-Patent-3 995 644 

US-Patent-Class-128-418, US-Patent-Class-3-1 1, US-Patent-Class-339-252R) Avail US 

Patent Office CSCL OB 

device is reported for facilitating the passage of electrical 

signals from an external source through the skin of a patient to 

internal portions of the body such as muscles and nerves The 

connector device includes a bio-compatible shell having an 

enlarged disk shaped portion for being implanted below the skin 

of the patient The shell has a first and second electrically 

conductive post carried therein upon which a plug can be readily 

connected and disconnected A modified form of the invention 

utilizes a unipolar connector that is adapted to be plugged into 

a shell implanted below the skin of a patient Both of the connector 

devices are designed to be separated when a predetermined 

force is applied This prevents excessive force from being applied 

to the implanted bio-compatible shell 

Official Gazette of the U S Patent Office 

8 8 o 

54 
52 AEROSPACE MEDICINE 

N77-15617*# National Aeronautics and Space Administration force to control the rotation of the foot and also restoring torque 

John F Kennedy Space Center Cocoa Beach Fla to return the foot back to its initial position NASA 

MAGNETIC ELECTRICAL CONNECTORS FOR BIOMEDICAL 

PERCUTANEOUS IMPLANTS Potent Appliction 

Lester J Owens. inventor (to NASA) Filed 30 Jul 1976 

14 p 

(NASA-Case-KSC-11030-1, US-Patent-Appl-SN-709849) Avail 

NTIS HC AO2/MF A01 CSCL O6B 00z 

A biomedical percutaneous connector for providing electrical 

connection between electrical conductors carried externally of a 14 

patients body, and electrical conductors implanted within the 

body of the patient is described The connector includes a socket u--_10 

having an enlarged disk shaped base portion for being implanted 

below the patient's skin A cylindrical portion is integral with 

the base portion and extends outwardly of the skin A conical l6 recess is provided in a upper end of the cylindrical portion and 

has a magnet located in the base Inclined conductive strips are 

carned on an upper end of the cylindrical portion adjacent the i 1b 

conical recess to which electrical conductors are attached and 0 

extend into the patients body A complementary shaped plug 

which also has electrical contacts provided is adaped to fit within 

the conical recess of the socket NASA 

• t.N77-15619# National Aeronautics and Space Administration 

Ames Research Center Moffett Field Calif 

EKG AND ULTRASONOSCOPE DISPLAY Patent ApplicaVion 

Robert D Lee, inventor (to NASA) Fied 17 Jan 1977 21 p / (NASA-Case-ARC-10994-2 US-Patent-AppI-SN-759965) Avail 

NTIS HC AO2/M1FAOl CSCL 06B 

A system is disclosed which permits simultaneous display 

of an EKG waveform in real time in conjunction with a two 

dimensional cross sectional image of the heart, so that the EKG 

waveform can be directly compared with dimensional changes 

in the heart_ The apparatus of the invention includes an 

ultrasonoscope for producing a C-scan cross-sectional image of 

the heart An EKG monitor circuit along with EKG logic circuitry 

is combined with the ultrasonoscope circuitry to produce on the 

same oscilloscope screen a continuous vertical trace showing 

the EKG waveform simultaneously with the heart image The 

logic circuitry controls the oscilloscope display such that the 

display of both heart and EKG waveforms occurs on a real time 

basis NASA 

N7716S618*# National Aeronautics and Space Administration
 

John F Kennedy Space Center Cocoa Beach Fla
 

ROTATIONAL JOINT FOR THE PROSTHETIC LEG Patent -


Application
 

Lester J Owens and William C Jones inventors (to NASA)
 

Filed 30 Jul 1976 14 p ­

(NASA-Case-KSC-11004-1, US-Patent-AppI-SN-710032) Avail
 

NTIS HC A02/MF AOl CSCL 06B 

A rotational joint assembly for a prosthetic leg which enables
 

an artificial foot to rotate shighly when a person is walking ­

running or turning is described The prosthetic leg includes upper
 

and lower tubular members with the rotational joint assembly
 

interposed therebetween The rotational joint assembly includes
 

a restrainer mechanism which consists of a pivotably mounted
 

paddle element engaging a resilient device for applying a limiting
 

55 
52 AEROSPACE MEDICINE 

N77-15621* National Aeronautics and Space Administration 

Ames Research Center Moffett Field Calif 

A MINIATURE IMPLANTABLE ULTRASONIC ECHOSONOMETER Patent Application 

Gilbert K Kojima inventor (to NASA) Filed 12 Jan 1977 

14 p 

(NASA-Case-ARC-11035-1 US-Patent-AppI-SN-758721) Avail 

NTIS HC A02/MF AOl CSCL 06B 

A miniature echosonometer adapted for implantation in the 

interior of an animal for imaging the internal structure of an 

organ tissue or vessel is described The echosonometer includes 

a receiver/transmitter circuit which is coupled to an ultrasonic 

transducer Power is coupled to the echosonometer by electromagnetic induction through the animal's skin Imaging signals from 

the echosonometer are electronmagnetcally transmitted through 

the animal s skin to an external readout apparatus NASA 

I is a 

FERVi OfR 

WO5 -' 

N77-17699*# National Aeronautics and Space Administration 

Ames Research Center Moffett Field Calif 

ASPIRIN/METIAMIDE COMPOSITION Patent A'pplication 

Patricia A Brown inventor (to NASA) (San Jose State Univ 

Calif) Filed 31 Jan 1977 15 p Sponsored by NASA 

(NASA-Case-ARC-11038-1 US-Patent-Appi-SN-764329) Avail 

NTIS HC A02/MF A01 CSCL 06E 

A pharmaceutical preparation is described which counters 

gastric distress caused by the ingestation of aspirin by the inclusion 

of metiamide in the analgesic formulation NASA 

35 

sti 40 

a 

0 EU. ,0i 

N77-17701*# National Aeronautics and Space Administration 

Ames Research Center Moffett Field Calif 

CONTOUR DETECTOR AND DATA ACQUISITION SYSTEM 

FOR THE LEFT VENTRICULAR OUTLINE Patent Apphcation 

John H C Reiber inventor (to NASA) Filed 16 Feb 1977 

46 p 

(NASA-Case-ARC-10985-1 US-Patent-Appl-SN-769148) Avail 

NTIS HC A03/MF A01 CSCL 06B 

A real-time contour detector and data acquisitron system 

for an angiographic apparatus was stipulated A video scanner 

converted an x-ray image of a structure characterized by a change 

in brightness level compared with its surrounding into video format 

and displayed the X-ray image in recurring video fields Author 

-~~~4" -2--h

N77-18733*# National Aeronautics and Space Administration 

Goddard Space Flight Center Greenbelt Md 

DETECTION OF MICROBIAL INFECTION IN BLOOD AND 

ANTIBIOTIC DETERMINATIONS Patent Application 

Christian G Schrock (New Eng Med Center Hospitals) Jody 

W Deming (New Engl Med Center Hospitals) Grace L Picciolo 

and Emmett W Chappelle inventors (to NASA) Filed 19 Jan 

1077 26 p 

(NASA-Case-GSC-12045-1 US-Patent-Appl-SN-760795) Avail 

NTIS HC A03/MF A01 CSCL 06B 

A method for the rapid detection of bacteria in blood and 

quick determination of the susceptibilities of various unidentified 

bacteria contained inblood to one or more antibiotics is described 

A bacterial adenosine triphosphate (ATP) assay is carried out 

after the elimination of interfering cellular elements in .blood 

and non-bacterial ATP to determine whether an infection exists 

If an infection does exist a portion of a blood culture is further 

processed including subjecting parts of the portion to one or 

more antibiotics Change in bacterial ATP in the parts is 

determined again by an ATP assay to determine whether the 

unidentified bacteria in the sample are susceptible to the antibiotic 

or antibiotics under test Author 

N77-19750"# National Aeronautics and Space Administration N7-

Pasadena Office Calif 

AUTOMATED CLINICAL SYSTEM FOR CHROMOSOME 

ANALYSIS Patent Application Kenneth Castleman IJPL) Howard J Frieden (JPL) Elbert T 

Johnson (JPL) Paul A Rennie (JPIL) and Raymond J Wall,
 

Inventors (to NASA) (JPL) Filed 16 May 1976 215 p
 

(Contract NAS7-100)
 

(NASA-Case-NPO-13913-1 US-Patent-AppI-SN-687251) Avail
 

NTIS HCA10/MF A01 CSCL 06B 

56 
-------- 

54 MAN/SYSTEM TECHNOLOGY AND LIFE SUPPORT 

An automatic chromosome analysis system is provided b-ooti-in place Multiple wearers or astronauts with varying foot 

wherein a suitably prepared slide with chromosome spreads sizes can thus use a single spacesurt NASA 

thereon is placed on the stage of an automated mlicroscope 

The automated microscope stage is computer operated to move 

the slide to enable detection of chromosome spreads on the - .---------­

slide The X and Y location of each chromosome spread that is izj i 

detected is stored At the conciusion of this searching operation 

the computer directs the microscope to again sequence through z. the chromosome spread locations in response to the stored X 

and Y locations NASA 

30z
 

N77-14743*# National Aeronautics and Space Administration 

0Ames 0-	 Research Center. Moffett Field. Calif 

AN IMPROVED COOLING SYSTEM FOR REMOVING 

24 METABOLIC HEAT FROM AN HERMETICALLY SEALED 

SPACESUIT Patent Application 

Bruce W Webbon. Hubert C Vykukal and Bill A Williams 

inventors (to NASA) Filed 23 Dec 1976 21 p 

z (NASA-Case-ARC-11059-1 US-Patent-Appl-SN-753978) Avail 

NTIS HC A02/MF A01 CSCL 05H 

Acooling and ventilating system is designed to achieve greater 

mobility with increased efficiency in removing metabolic heat. 

4Z IG- 1waste gases and water vapor from a spacesuit The system 

includes an external life support system to wh,ch is attached a 

body suit with a liquid circulating circuit for establishing a 

cooling flow of water through the thorax and head sections of 

the body suit A gas circulating circuit including conduits and a helmet duct is provided for establishing a flow of gas throughout 

lRM 	 the spacesuit whereby gaseous wastes and watervaporare flushed 

from the suit Heat waste gases and water vapor ultimately are dissipated by the life support system NASA 

T T 

44 

3 z" 54MAN/SYSTEM TECHNOLOGY 


AND LIFE SUPPORT 82 L


Includes human engineering biotechnology and space 	 4 F 

suits and protective clothing 	 - l 

N77-14742"# National Aeronautics and Space Administration 

Ames Research Center Moffett Field Calif 

A WALKING BOOT ASSEMBLY Patent Application 

Hubert C'Vykukal. Alan B Chambers and Roy H StJohn, inventors 

(to NASA) Filed 23 Dec 1976 17 p 

(NASA-Case-ARC-1 1101-1. US-Patent-AppI-SN-75S396) Avail 

NTIS HC A02/MF A01 CSCL 05H 

Spacers or liners inserted in the boot components of 

N77-15641f# National Aeronautics and Space Administration 

Ames Research Center. Moffett Field, Calif 

pressurized spacesuits impair foot ventilation and cause foot 

discomfort A walking boot is described which includes a bootie 

SPACESUIT MOBILITY JOINTS Patent Application 

Hubert C Vykukal. inventor (to NASA) Filed 23 Dec 1976 

adaptable to the foot of the wearer A protuberance projected 

from the bootie fits within a recess in the inner sole of an 

hermetically sealed boot Spring loaded latching bolts hold the 

47 p 

(NASA-Case-ARC-11058-I US-Patent-Appl-SN-753965) 

NTIS HC A02/MF AOl CSCL 05H 

Avail 

57 
54 MAN/SYSTEM TECHNOLOGY AND LIFE SUPPORT 

Constant volume mobility joints are described for interconnect-

,ng adjacent segments of an hermetically sealed spacesuit for 

irelative motion Each joint includes at least one pair of annuli 

supported for pivotal displacement about paralleling axes and a 

flexible substantially impermeable diaphragm of a tubular 

configuration spanning the distance between the annuli and 

connected thereto in an hermetically sealed relationsbiptherewith 

The diaphragm includes at least one rolling convolution having 

a crown disposed in a fixed relation with an axis about which 

one of the annuli pivots NASA 

4 ..dv. .. .
 

t°
 

,. ,A - '°""
 

L_3, 

r -,-_N, . 

6Filed ' --_ 5:- . _ 


, =£ , ,.- i 

i , ,s _ fz~zA 

=I 1! ] k.--

__ -o ,,bed ' " _ ) -

N77-21844c National Aeronautics and Space Administrationa 


Marshall Space Flight Center Huntsville Alatu 


EMERGENCY DESCENT DEVICE Patent 

Robert R Belew, inventor NASA) Issued 19 Apr 1977
 

7 p Filed 1i Oct 1975 Supersedes N7t-13770 (14 - 04,dehumiify 

p 0493)/
 

(NASA-Case-MFS-23074-1 US-Patent-4 018 423 


US-Patent-Appl-SN-623188, US-Patent- Class-254-158,
 US-Patent-Class-tn8-291) Avail US Patent Office CSCL
 

13L
 

A descent device is provided for emergency descent from
 tallstructures and for lowering objects from high elevations
 

such as a hoveFng helicopter The device cludes a 

spool having a cable wound thereon for descent and a rotationretarding vane member weh rotates a fluidcylnder An 

58 

adjustable bypass is provided for the fluid as the vane member 

rotates therein so that the speed of descent can be adjustably 

controlled Official Gazette of the U S Patent Office 

5$ 

SO 
 i

% o. 

2 

N77-21847*# National Aeronautics and Space Administration 

Lyndon B Johnson Spa,, Center, Houston, Tex 

PORTABLE BREATHING SYSTEM Patent Application IJohn 24 S Lovell. Mar 1977 inventor 24 (to p
 NASA) (Hamilton Standard, Hartford)

(Contract NAS9-14.4f8} 

~ ~~(NASA-Case-MSC-16182-1NI HA0MF01C LUS'Patent-AppI-SN'7S093O0) Avail 

semniclosed-loop rebreathing system is provided for use in 

a hostile environment The system is characterized by a packed 

regenerative heat exchanger providing two distinct temperature hu mndty zones of breathing gas with one zone providing 

cool, relatively a dry air n utic and zone Providing hot, moist

air Exhaled gas is passed through the packed bed regenerative 

heat exchanger to increase the temperature and humidity of the 

gas and isthen passed through a sorient canister containing a lithium hydroxide bed to remove carbon dioxide The rbon 

dioxide-free gas isthen passed through the regenerative heat Lexcanger i the reverse drectnon to cool ad dehumidify the 

,gas to normal breathing conditions NASA 

n s n e v h m 

s c 

If 

ato 


o..
 

-otalng
 
60 

COMPUTER OPERATIONS AND 

HARDWARE 

includes computer graphics and data processing 

For components see 33 Electronics and Electrical 

Engineerng 

IN77-12721* National Aeronautics and Space Administration 

Pasadena Office Calif 

COMPUTER INTERFACE SYSTEM Patent 

Tage a Anderson, inventor (to NASA) (JPL) Issued 26 Oct 

1976 10 p Fired 5 Aug 1974 Supersedes N74-30549 (12 ­

20. p 2388) Sponsored by NASA (NASA-Case-NP-13428-1 NASA-Case-NPO-13447-1 

US-Patent-3.968,716 US-Patent-AppI-SN-496022 US-Patent-Class-340-172 5 US-Patent-Class-1 79-1SA 

US-Patent-Class-328-1 11) Avail US Patent Office CSCL 

09B 

An interface logic circuit permitting the transfer of information between two computers having asynchronous clocks is disclosed 

The information transfer involves utilization of control signals (including request return-response ready) to generate properly timed data strobe signals Noise problems are avoided because 

each control signal, upon receipt is verified by at least two clock pulses at the receiving computer If control signals are verified, a data strobe pulse is generated to accomplish a data 

transfer Once initiated the data strobe signal is properly completed independently of signal disturbances in the control 

signal initiating the data strobe signal Completion of the data 

strobe signal is announced by automatic turn-off of a returnresponse control signal Author 

w~dd' /nM~cdacdisplaying 

= N77-14751 National Aeronautics and Space Administration 

Goddard Space Flight Center Greenbelt, Md 

TWO-DIMENSIONAL RADIANT ENERGY ARRAY COMPUTERS AND COMPUTING DEVICES Patent 

-David H Schaefer and James P Strong, inventors (to NASA) .Issued 7 Dec 1976 31 p Filed 8 May 1974 

I(NASA-Case-GSC-11839-1, US-Patent-3.996 455. 

US-Patent-AppI-SN-468614, US-Patent-Class-235-152 

US-Patent-Class-250-227 US-Patent-Cless-340-1725. 

US-Patent-Oass-35O-96R) Avail US Patent Office CSCL 

Two dimensional digital computers and computer devices op­ erate in parallel on rectangular arrays of digital radiant energy opti­ cal signal elements which are arranged in ordered rows and col­ umns Logic gate devices receive two input arrays and provide an output array having digital states dependent only on the digital states of the signal elements of the two input arrays at' 

corresponding row and column positions The logic devices include an array of photoconductors responsive to at least one of the 

input arrays for either selectively accelerating electrons to a phosphor output surface applying potentials to an electroluminescent output layer exciting an array of discrete radiant energy 

60 COMPUTER OPERATIONS AND HARDWARE 

sources, or uxciting aliquid crystal to influence crystal transparency 

or reflectivity Official Gazette of the US Patent Office 

Lh 

C0 64748 

40o 46 

Aa M. 0-= *8if 

-

49-

B 5 

N77-19760" National Aeronautics and 'Space Administration 

Ames Research Center, Moffett Field Calif 

SELECTIVE DATA SEGMENT MONITORING SYSTEM 

Patent 

Manfred N Wirth. inventor (to NASA) Issued 2 Nov 1976 

9 p Filed 12 May 1975 Supersedes N75-25127 (13 - 16 

p 1965) 

(NASA-Case-ARC-10899-1. US-Patent-3 990 049 

US-Patent-AppI-SN-576774 US-Patent-Class-340-172 6­

US-Patent-Class-178-69 5R US-Patent-Class-179-15BS) Avail 

US Patent Office CSCL 09B 

High speed data monitoring apparatus is described for 

the bit pattern of a selected portion of a block of 

trasmitted trahsmitted data data and comprising for temporarily a shift register for receiving the containing the consecutive 

data bits A programmable sync detector for monitoring the 

contents of the shift register and for generating a sync signal when the shift register contains a predetermined sync code is 

included A counter is described for counting the data bits input 

to the shift register after the sync signal is generated and for 

generating a count complete signal when a selected number of data bits have been input to the register A data storage device 

is used for storing the contents of the shift register at the time the count complete signal is generated Official Gazette of the U S Patent Office 

e." 

59
 

098 
73 NUCLEAR AND HIGH-ENERGY PHYSICS 

interfitting arrangement with the bulges of the rods received in 73 NUCLEAR AND HIGH-ENERGY the recesses formed between the bulges of other rods thereby closely packing the nuclear fuel The rods are constructed of a 

PHYSICS mixture of tungsten and thorium oxide to provide high power 

Includes elementary and nuclear particles and reactor output high efficiency, high strength and good machinability 

theory Official Gazette of the U S Patent Office 

For space radiation see 93 Space Radiation 

N77-10899* National Aeronautics and Space Administration 2-

Lyndon B Johnson Space Center Houston Tex . Z 

WINDOW DEFECT PLANAR MAPPING TECHNIQUE 26 424 

Patent 

Fred R Minton (Rockwell Intern Corp Downey Calif) and Ue -s 

O Minton. inventors (to NASA) (Rockwell Intern Corp, Downey 39 28 

Calif) Issued 12 Oct 1976 4 p Filed 14 Mar 1975 Supersedes 30 

N75-22119 (13 - 13 p 1576) Sponsored by NASA :c 

(NASA-Case-MSC-19442-1 US-Patent-3 985 454 

US-Patent-AppI-SN-558600 US-Patent-Class-356-237 2o 

U S-Patent-Class-356-239) Avail US Patent Office CSCL 42 

20F 36 

A method of planar mapping defects in a window having 

an edge surface and a planar surface The method is comprised 

of steps for mounting the window on a support surface Then a 

light sensitive paper is placed adjacent to the window surface 

A light source is positioned adjacent to the window edge The 

window is then illuminated with the source of light for a 7 OP I 

predetermined interval of time Defects on the surface of the 

glass as well as in the interior of the glass are detected by Includes light phenomena 

analyzing the developed light sensitive paper The light source 

must be in the form of optical fibers or a light tube whose light 

transmitting ends are placed near the edge surface of the 

window Official Gazette of the U S 'Patent Office 	 N77-14842"# National Aeronautics and Space Administration 

Marshall Space Flight Center. Huntsville Ala 

SYSTEM FOR THE MEASUREMENT OF ULTRA-LOW STRAY 

LIGHT LEVELS Patent Application 

Charles L Wyman. inventor (to NASA). Donald B Griner Charles 

A Hawkins Gary H Runt (Sperry Rand Corp. Huntsville Ala 

William A Hurd (Sperry Rand Corp, Huntsville Ala). Glen B 

Shelton (Sperry Rand Corp. Huntsville Ala) Bill B Fannin 

'(Arizona Univ Tucson). and Robert P Breault (Arizona Umv 

Tucson) Filed 29 Dec 1976 22 p 

(NASA-Case-MFS-23613-1 US-Patent-Appl-SN-755323) Avail 

NTIS HC A02/MF AOl CSCL 20F 

.a, An apparatus for measuring the effectiveness of stray light 

suppression light shields and baffle arrangements used in 

'optical space experiments is described The light shield and 

,na baffle arrangement and a telescope model are contained in a vacuum chamber A source of short high powered light energy 

Ilummates portions of the light shield and baffle arrangement 

dnd reflects the light to a photomultiplier tube by virtue of 

multipath scattenng NASA 

DA -T A DATA" PRINTERRAT 36 

N77-18891* National Aeronautics and Space 

Pasadena Office Calif 

Administration T k 

TIMING 

NUCLEAR THERMIONIC CONVERTER Patent TIMING 

Wayne M Phillips (JPL) and Jack F Mondt inventors (to NASA) (JPL) Issued 15 Feb 1977 5 p Filed 3 Oct 1972 Supersedes 

N73-12702 (11 - 03 p 0332) Sponsored by NASA ELECTRONICS 26 SYSTEM 

(NASA-Case-NPO-13121-1. US-Patent-4 008 407 

US-Patent-AppI-SN-294727. US-Patent-Class-31O-4R, SHR UD /14 

US-Patent-Class-313-311 U S-Patent-Class-346R) Avail 

US Patent Office CSCL lOB 

Efficient nuclear reactor thermionic convener units are W 

described which can be constructed at low cost and assembled [IDErEGR Lo 

in a reactor which nequires a minimum of fuel Each converter MOD9L 

unit utilizes an emitter rod with a fluted exterior several fuel 

passages located in the bulges that are formed in the rod between 

the flutes and a collector receiving passage formed through the 12) center of the rod An array of rods is closely packed in an 

60
 
74 OPTICS 

N77-1B26*# National Aeronautics and Space Administration signals The three primary colorsignals can be encoded as standard 

John F Kennedy Space Center, Cocoa Beach Fla NTSC color signals Official Gazette of the U S Patent Office 

FIBER OPTIC MULTIPLEX OPTICAL TRANSMISSION 

SYSTEM Patent Application 

Charles H Bell. inventor (to NASA) Filed 18 Aug 1976 

20 p (NASA-Case-KSC-11047-1, US-Patent-Appl-SN-715485) Avail 

NTIS HC AO2/MF A01 CSCL 2OF 

A multiplex optical transmission system for simultaneously 

transmitting and receiving a number of signals while minimizing 

external interference is described The system includes several 

subgroup mixers which block video signals, digital data signals 

and audio signals into respective frequency ranges The output 

of the subgroup mixers are fed to a master mixer that produces 

a composite electrical signal An optical transmitter is connected -;v 

to the master mixer for converting the composite signal into an 

optical signal and transmitting the optical signal over a fiber 

optic cable An optical receiver is connected to the other end of 

the fiber optic cable for receiving the optical signal and 

converting it back into a composite electrical signal A demultiplexer is coupled to the output of the optical receiver for 

separating the composite signal back into video data and audio 

signals A programmable optical patch board selectively connects 

the optical signals to various receivers and transmitters NASA 

N77-20882" National Aeronautics and Space Administration 

Langley Research Center Langley Station, Va 

BINOCULAR DEVICE FOR DISPLAYING NUMERICAL 

INFORMATION IN FIELD OF VIEW Patent 

Harry V Fuller inventor (to NASA) Issued 15 Mar 1977 6 p 

Filed 28 Aug 1975 Supersedes N75-30516 (13 - 21. 

p 2672) 

(NASA-Case-LAR-11782-1 US-Patent-4012 123. 

US-Patent-AppI-SN-608482. US-Patent-Class-SS0-174 

US-Patent-Class-3S50-145) Avail US Patent Office CSCL 

20F 

An apparatus is described for superimposing numerical 

information on the field of view of binoculars The invention has 

application in the flying of radio-controlled model airplanes, 

Information such as airspeed and angle of attack are sensed on 

a model airplane and transmitted back to earth where this 

information is changed into numerical form Optical means are 

attached to the binoculars that a pilot is using to track the 

model air plane for displaying the numerical information in the 

field of view of the binoculars The device includes means for 

focusing the numencal information at infinity whereby the user 

of the binoculars can see both the field of view and the numerical 

information without refocusing his eyes 

Official Gazette of the U S Patent Office 

N77-1893 National Aeronautics and Space Administration 1 

Lyndon B Johnson Space Center Houston Tex 

SYSTEM FOR PRODUCING CHROMA SIGNALS Patent 

Kenneth H Vorhaben (Lockheed Electronics Co Houston, Tex) 

and Phillip C Lipoma inventors (to NASA) (Lockheed Electronics 

Co, Houston, Tex) Issued 18 Jan 1977 3 p Filed 12 Sep
 

1975 Supersedes N75-33835 (13 - 24. p 3102) Sponsored
 

by NASA
 

(NASA-Case-MSC-14683-1 US-Patent-4.004 292
 

US-Patent-AppI-SN-612967 US-Patent-Class-358-44) Avail
 

US Patent Office CSCL 20F
 

A method for obtaining electronic chrome signals with a
 

single scanning-type image device isdescnbed A color multiplexed
 

light signal is produced using an arrangement of dichroic filter
 

stripes In the particular system described, a two layer filter is
 

used to color modulate external light which is then detected by
 

an image pickup tube The resulting time division multiplexed
 

electronic signal from the pickup tube is converted by a
 decoder into agreen color signal and asingle red-blue multiplexed
 

signal which is demultiplexed to produce red and blue color
 

61
 
74 OPTICS 

N77-21941 t National Aeronautics and Space Administration 

Pasadena Office Calif 

UNIFORM VARIABLE UGHT SOURCE Patent 

Henry P Squyres. inventor (to NASA) (JPL) Issued 16 Jan 

1973 7 p Filed 4 Dec 1970 Sponsored by NASA 

(NASA-Case-NPO-11429-1 US-Patent-3711701 

US-Patent-Appl-SN-5189 US-Patent-Class-24-4613 

US-Patent-Class-240-41R, US-Patent-Class-240-41 35R 

US-Patent-Class-356-236) Avail US Patent Office CSCL 

20F 

A uniform stable light source comprising a special lamp 

with a built in reflector js described The light projects stable 

and uniform luminous flux with unvarying spectral characteristics 

with a distribution temperature of about 3000 K The uniform 

luminous flux flows into a conical cavity through an iris diaphragm 

whose diameter is controllable A uniform light diffuser is 

positioned at the opposite end of the conical cavity The level 

of luminance which is transmitted through the diffuser is controlled 

by controlling the diaphragm diameter 

Official Gazette of the U S Patent Office 

85 URBAN TECHNOLOGY AND 

TRANSPORTATION 

Includes applications of space technology to urban problems 

technology transfer technology assessment and surface and 

mass transportation For related information see 03 Anr 

Ttanspontat~on and Safety. 16 Space Transportation and 44 

Energy Production and Converston 

N77-I7949"# National Aeronautics and Space Administration 

Pasadena Office, Calif 

PROCESS FOR PURIFICATION OF WASTE WATER 

PRODUCED BY A KNAFT PROCESS PULP AND PAPER 

MILL Patent Application Marshall Humphrey. inventor (to NASA) (JPL) Fled 16 Dec 

1976 13 p 

(Contract NA $7-1 00) (NASA-Case-NPO-13847-2 NASA-Case-NPO-1 3848-2 

US-Patent-Appl-SN-760798) Avail NTIS HC A02/MF A0l 

CSCL 138 

A method and means for purifying the waste water from 

paper and pulp mill wastes obtained from a mill using the Kraft 

process were ascertained Lignins and hignin derivatives were precipitated from the waste stream with quaternary an-moniunm 

compounds removing other impurities by activated carbon 

produced from the cellulosic components of the waste and 

thereafter separating water from the precipitate and solids The 

activated carbon also acted as an aid to the separation of the 

water and solids The precipitate containing the hignins and 

quaternary ammonium compound was dissolved in methanol to recover lignins Upon acidification the lignin was precipitated 

62 

from the solution The methanol and quaternary ammonium 

compound were recovered for reuse from the remainder NASA 

ZAT 

ITRuos 

RESY. i 

'.Emt 

rI IT 

I 

RSoL Tr -

UT 

L 

_I Zo 
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