baber/WOPTO huggingface dataset:
Patent CA-1211480-A (CA)
Inventor: WILLOUGHBY MICHAEL D
IPC: C04B24/26
Filed: 1984-06-18
Granted: 1986-09-16
Abstract: METHOD FOR FORMING A LIGHTWEIGHT CEMENTITIOUS STRUCTURAL      PRODUCT AND PRODUCT FORMED THEREBY               ABSTRACT OF THE DISCLOSURE      A method for producing a lightweight set cementitious products and more specifically, gypsum wallboard, having excellent strength and paper-to-core bond, which method comprises producing a foam comprising polyvinyl alcohol and water, introducing the foam thus formed into an aqueous cementitious slurry, depositing the slurry between paper cover sheets, and permitting the cementitious slurry to set.  In a further embodiment an emulsion formed of asphalt and wax is added to the cementitious slurry to impart water resistance, the polyvinyl alcohol of the foaming agent cooperating with the asphalt and wax emulsion to improve the water resist-tant properties of the set gypsum wallboard.
Patent CA-1181281-A (CA)
Inventor: RAMSAY JEAN R
IPC: F24F13/08
Filed: 1984-07-19
Granted: 1985-01-22
Abstract: IMPROVED STATIC VENTILATOR                 CONSTRUCTION        ABSTRACT OF THE DISCLOSURE     A static ventilator comprising a hollow housing having a circumferential sidewall, a closed top end, and an open botton end.  One or more vent openings are horizontally disposed in the sidewall.  At least two downwardly sloping hood plates are secured above and below each of the vent openings and have a downwardly extending outer end flange having a free end edge.  An anti-squall deflector plate is secured below the vent openings intermediate the hood plates and extend above the horizontal plane of the free end edge of a top one of the two hood plates and terminates short of the outer end flange of the top hood plate to define a vent port between the hood end flange and free end of the deflector plate communicating with the vent opening between the two hood plates.  The anti-squall deflector plate prevents foreign matter from entering the vent openings.
Patent CA-1249737-A (CA)
Inventor: OHTSUBO HIROSHI
IPC: C21D9/08
Filed: 1984-10-15
Granted: 1989-02-07
Abstract: ABSTRACT    Martensitic stainless steels that enable the fabrication of high-strength seamless steel pipe suited for use in oil-well pipe and pipeline tubing by means of a Mannesmann plug mill or Mannesmann mandrel mill process, without the formation of defects during production.  The heat workability of these steels, which contain no more than 0.30% by weight of carbon and from 11 to 14% by weight of chromium, and have a ferrite content of at least 40% at 1200°C, has been vastly improved by holding the phosphorus and sulfur levels therein to no more than 0.020% and 0.003% by weight, respectively.
Patent CA-1228419-A (CA)
Inventor: ALDENHOVEN GHISLANUS M A M
IPC: G11B15/07
Filed: 1984-12-13
Granted: 1987-10-20
Abstract: ABSTRACT:           A magnetic-tape apparatus comprises a switching device for actuating the recording switch (52).  The magnetic-tape apparatus is provided with a head-mounting plate (6) which carries a magnetic head (8,9) and which is movable between at least two positions, two winding spindles (2,3) each coaxially connected at its lower end to an associated reel disc (4,5), and an idler wheel (27) which is driven by a drive means (16,17), and which is pivotally supported between the reel discs (4,5), so as to be displaceable into engagement with either disc to trans-mit drive thereto in an operating position of the head-mounting plate (6).  The head-mounting plate (6) is pro-vided with two abutments (34) which, in a rest position of the head-mounting plate (6), limit the displacement of the idler wheel (27) so as to keep the idler wheel (27) dis-engaged from the reel discs (4,5).  The switching device comprises a guideway (30,31,32) on the head-mounting plate (6) which, in a movement of the head-mounting plate (6), guides an axially displaceable coupling wheel (35) between two positions.  In one of these positions, when the head-mounting plate (6)  is in the rest position, the coupling wheel (35) is coupled to the idler wheel (27), and in the other position, when the head-mounting plate (6) is in the operating position, the coupling wheel (35) is disengaged from the idler wheel (27).  The switching device further comprises a servo wheel (40) which can be driven by the coupling wheel (35) and with which a latching element (42) cooperates to lock the servo wheel (40) against rotation in one direction and which is also cooperable with the recording switch (52) of the switching device via an actuating means (49).
Patent CA-1210802-A (CA)
Title: Rotary direction regulator for synchronous electric  motor
Inventor: OZAKI OSAMU
IPC: H02K19/02
Filed: 1984-12-20
Granted: 1986-09-02
Abstract: ROTARY DIRECTION REGULATOR FOR    SYNCHRONOUS ELECTRIC MOTOR            ABSTRACT OF THE DISCLOSURE        A rotary direction regulating device for a synchro-nous electric motor.  A plate is disposed on the rotor shaft which rotates with the rotor.  A stopper is supported for axial movement in an eccentric axial hole through the plate. At opposite axial sides of the stopper, respective generally parallel, inclined cam surfaces move the stopper axially as the rotor rotates. The stopper is guided by the inclined surfaces to move axially and to permit the rotor and the regulating plate to rotate in the correct direction of rota-tion.  One of the cam surfaces has a sharply inclined stopper wall oriented generally parallel to the axis of the rotor and the opposite cam surface shifts the stopper to abut the stopper wall upon reverse rotation of the rotor and the plate.  That abutment prevents rotor reverse rotation.  The stopper is supported for swinging with respect to the plate in its axial motion.  The cooperating cam surfaces are oppo-site each other and are in cam plates disposed at opposite sides of the stopper.
Patent CA-1246841-A (CA)
Inventor: WAGNER JOSEPH F
IPC: B21H1/02
Filed: 1985-02-26
Granted: 1988-12-20
Abstract: WHEEL DISC-TO-RIM ASSEMBLY                 Abstract of the Disclosure A wheel is constructed in part by pressing a hot-formed disc into an extreme interference press-fit with a drop-center wheel rim without there being any surface preparation done to the outside diameter of the disc or to the inside diameter of the rim.
Patent CA-1225113-A (CA)
Inventor: BOULTER EDWARD A
IPC: H02K3/30
Filed: 1985-03-15
Granted: 1987-08-04
Abstract: SLOT ARMOR FOR DYNAMOELECTRIC MACHINES       ABSTRACT OF THE DISCLOSURE      A slot armor for insulating the slots in the rotor of a dynamoelectric machine from the windings contained in the slots includes a high-dielectric film on at least one surface thereof.  A layer of a tough lubricating solid is coated on the exterior surface of the film.          The lubricating solid prevents abrasion of the film by radial motion of the windings with respect to the slot armor or radial motion of the slot armor with respect to the slots.  In the preferred embodiment of the invention, a substrate of glass fiber/epoxy composite has a polyimide polymer film bonded to the surface thereof.  The lubricating solid coating on the external surface of the polyimide polymer film is an FEP fluorocarbon.
Patent CA-1247416-A (CA)
Inventor: HICKS JOHN W JR
IPC: H04B10/2581
Filed: 1985-03-29
Granted: 1988-12-28
Abstract: POLARIZATION LOCKED OPTICAL FIBER AND METHOD  ABSTRACT OF THE DISCLOSURE         A polarization locked optical fiber having a fiber core suspended by a thin cladding web within a tube with a prestress acting along the web to fixedly polarize the core.  Preferably, the tube and web are glass materi-als having different thermal characteristics to provide a built-in stress upon drawing of the web and tube assem-bly.  In the preferred method, an optical fiber preform is machined to a rectangular form and drawn within an enclosing tube to provide the stressed web arrangement.
Patent CA-1259911-A (CA)
Inventor: DIAMOND STEVEN E
IPC: G01N33/53
Filed: 1985-07-12
Granted: 1989-09-26
Abstract: ABSTRACT IMMUNOASSAY OR NUCLEIC ACID ASSAY WITH   GAS PHASE DETECTION OF VOLATILE TAG    At the conclusion of a selective binding assay (e.g., immunological or nucleic acid), an enzyme is present in modulated concentration and/or activity to moderate a chemical reaction such as the cleavage of o-nitrophenyl-b-D-galactopyranoside.  After a controlled period, the enzymatic product is transferred to the gas phase and concentrated relative to other components in the enzymatic reaction mixture, such as by extraction into ethyl ether, injection into a gas chromatography column and detection by flame ionization or electron capture.  Kits for such assays are also disclosed.
Patent CA-1232659-A (CA)
Inventor: POOLE JOHN D
IPC: G05D15/01
Filed: 1985-07-23
Granted: 1988-02-09
Abstract: ABSTRACT An Actuator System A railway vehicle brake actuator employs an electric motor driving through a step-down gearbox to mechanically move the brake blocks.  After the initial rubbing contact point the response of the system is non-linear and the motor feedback control involves compensation for said non-linearity.  The motor output shaft is connected to a rotary shaft encoder so that the position of the actuator output member, and thus also the brake force applied, can be determined by pulse counting.  The ideal relationship between a brake demand signal and brake force is linear.  The actual relationship between actuator position and brake force is non-linear.  Correction factors covering the whole operating range are stored in a memory against pulse count numbers and used as a look-up table in the feedback circuit to compensate either the feedback signal or the demand signal for the non-linearity of the response.
Patent CA-1243224-A (CA)
Inventor: JOHNSON CARL R
IPC: F16H7/14
Filed: 1985-09-19
Granted: 1988-10-18
Abstract: BELT TENSIONING APPARATUS FOR BELT/PULLEY DRIVE SYSTEM     ABSTRACT OF THE DISCLOSURE        A mechanical drive mechanism of the endless belt and pulley type having an improved belt tensioning arrangement. The shaft of the machine being driven (or that of the driving member itself) is eccentrically journaled with respect to its cylindrical bearing hub and a rigid arm having a first bore therethrough is disposed with the hub of the machine centered in that first bore. Located at the opposed end of the rigid arm is a parallel bore in which the other drive or driven shaft is journaled. Because of the eccentricity between the first shaft and its hub, as the arm is rotated about the hub as a center, the distance between the centers of the driving and driven shafts is increased or decreased, depending upon the direction of rotation of the rigid arm. As such, the tension of the endless belt coupling the drive and driven pulleys can be varied. The construction of the belt and pulley combination lends itself to being completely enclosed in a protective shroud which need not be removed to make the tensioning adjustment.
Patent CA-1261294-A (CA)
Inventor: OHSUGI YUKIHIRO
IPC: C10C3/10
Filed: 1985-10-01
Granted: 1989-09-26
Abstract: METHOD OF PRODUCING PRECURSOR PITCHES                    FOR CARBON FIBERS     Abstract of the Disclosure A method of producing a precursor pitch suitable  for  the production of carbon fibers is disclosed, which comprises dissolving a coal tar pitch in a particular solvent to remove a solvent insoluble matter, distilling off the solvent to obtain a purified pitch containing no free carbon, and heat-treating the purified pitch to obtain an objective precursor pitch.
Patent CA-1265701-A (CA)
Inventor: PINET LUCIEN J
IPC: B30B9/32
Filed: 1985-11-01
Granted: 1990-02-13
Abstract: ABSTRACT            A device for crushing thin walled beverage containers which includes an elongate base member having an elongate handle pivotally attached thereto at a position spaced from a pair of spaced can supporting members on the base plate. The spaced apart members projecting outwardly from the base member and, at least during the final phase of crushing a can, the handle passes therebetween.  A plate is secured to the handle and abuts against the end of a can on said cradle.  The plate preferrably has opposite side edges that slopw in conformity with sloping faces on the can supporting members.
Patent CA-1261120-A (CA)
Inventor: CARLSSON KURT
IPC: B01D53/34
Filed: 1985-11-18
Granted: 1989-09-26
Abstract: ABSTRACT OF THE DISCLOSURE      The invention relates to a method and an arrangement for enabling a contaminated medium to be cleansed in a contact reactor by introducing thereinto a pulverulent absorption material capable of reacting with contaminants in the medium, the medium and the absorption material being mixed together in the contact reactor over a period of time in which contaminants react with the material, therewith to absorb on and react with individual particles in the pulverulent absorption material.      The method includes the steps of (a)  removing absorption material partly reacted with contaminants downstream of the contact reactor;           (b)  storing this removed absorption material for a pre-determined time duration in excess of 20 hours;           (c)  causing the contaminants to diffuse inwardly into respective individual particles during this storage time, thus to impart to the surfaces of the particles an increased ability to absorb further contaminants; and (d)  by returning stored, previously used absorption material to the contact reactor as a pulverulent absorption material capable of reacting with the contaminants contained in the medium.
Patent CA-1240185-A (CA)
Inventor: A COSTA ANTHONY
IPC: F41A21/34
Filed: 1985-11-27
Granted: 1988-08-09
Abstract: ABSTRACT OF THE DISCLOSURE    A flash suppressor for use on a rifled barrel of a firearm comprising  a  generally  tubular  body member having a  first portion adapted to receive a projectile from the barrel and a second portion,  the first portion having a longitudinal smooth bore passage therethrough, through which a projectile discharged from the barrel passes,  the barrel and the first and second portions being coaxial,  and the smooth bore passage having a diameter less than the diameter of a circle passing through the bottom of the rifling grooves in the barrel, the second portion having  an  inside  diameter  significantly greater  than  the diameter of  the  smooth bore passage,  and a plurality of radially directed vent openings formed in the second portion of the body member.
Patent CA-1240071-A (CA)
Title: Housing for an electronic device
Inventor: MONNIER MICHEL J
IPC: H01L23/06
Filed: 1985-12-20
Granted: 1988-08-02
Abstract: ABSTRACT: "Housing for an electronic device".     The invention relates to a housing for an elec-tronic device including a ceramic substrate 120 on which a multilayer circuit 110 is deposited by screen-printing, which circuit serves to bring about the connection between the terminals 7 of the said electronic device and the moun-ting pins 2 of the housing, which are provided in metallized holes in the substrate, which holes are provided with con-ducting rings (11 and 12) by means of screen-printing, characterized in that the conducting layers are formed from a compound which can be screen-printed and which comprises, at least, copper, and a vitreous-crystalline material, which compound is to be fired in a neutral atmosphere at a tem-perature which is lower than the melting temperature of copper, in that the insulating layers are formed from a vitreous-crystalline screen-printable compound which must be fired in a neutral atmosphere at a temperature which is suited for the conducting layers, the insulating com-pound having a coefficient of expansion which is adapted to that of the substrate up to its firing temperature, in that the last layer of the circuit is a protective insula-ting vitreous-crystalline layer, in that the pins have the shape of a shank provided with a flat head, which flat head rests on the ring which is located at one of the faces of the substrate, in that the pins are fixed by means of a metal alloy which is compatible with the metal coating of the holes and conducting rings, the melting temperature of which alloy is substantially the same or lower than the firing temperature of the circuit layers, in that the ter-minals of the electronic device located on the substrate are connected to the ends of the conductors by means of flexible wires, which ends are left free during the manu-facture of the multilayer circuit, and in that the elec-tronic device is protected by a cap.
Patent CA-1237466-A (CA)
Inventor: MORRELL ALBERT M
IPC: H01J29/32
Filed: 1986-03-12
Granted: 1988-05-31
Abstract: RCA 82,023 Abstract In an improved color picture tube having a substantially rectangular slit-aperture type shadow mask mounted therein in spaced relation to a substantially rectangular cathodoluminescent line screen, the cathodoluminescent lines of the screen, in front plan view, first increase in curvature with an increase in distance from the minor axis of the screen and then decrease in curvature with further increase in distance from the minor axis, to become substantially straight at the short sides of the screen.
Patent CA-1255561-A (CA)
Inventor: SARNOFF STANLEY J
IPC: A61M5/178
Filed: 1986-05-20
Granted: 1989-06-13
Abstract: PLURAL DOSAGE AUTOMATIC INJECTOR     WITH A BY-PASS FITMENT               ABSTRACT OF THE DISCLOSURE          An automatic injecting device including an elongated housing assembly, a stressed spring assembly mounted within the housing assembly so as to be released in response to a predetermined manual actuation procedure, and a medicament cartridge assembly mounted within the housing assembly in cooperating relation with the stressed spring assembly comprising a hypodermic needle and a medicament container housing forward and rearward individual dosages of different relatively incompatible liquid medicaments mounted therein and separated by a deformable stopper.  The medicament container is formed of glass and includes a cylindrical wall open at its rearward end and having an exteriorly flanged necked down forward end portion.  A hub assembly connects the exteriorly flanged necked down forward end portion with the hypodermic needle.  A separate fitment of molded plastic material is mounted within the interior of the cylindrical glass wall adjacent the necked down forward end portion thereof for radially inwardly deforming the stopper during operation and thereby providing an axial by-pass in the periphery thereof.
Patent CA-1258219-A (CA)
Inventor: PINEGAR RICHARD K
IPC: B26D3/22
Filed: 1986-05-27
Granted: 1989-08-08
Abstract: ROTARY CUTTING APPARATUS ABSTRACT OF THE DISCLOSURE     An   improved   rotary   cutting  apparatus  is provided  for  cutting  vegetables, particularly such as potatoes,   into  a  distribution  of  strip  sizes not exceeding  a  predetermined length limit.  The apparatus comprises   a   conventional   rotary   impeller  having peripheral  blades  for  carrying  potatoes into cutting relation  with  a  slicing  knife on an impeller housing for  dividing  the  potatoes  into  slices  followed  by subsequent  cutting  into  strips by strips knives on an adjacent   cross-cut  spindle.    The  impeller  further includes  an  axially  centered  divider ring defining a pair  of  annular  chambers for potato passage outwardly to  the  slicing  knife,  wherein  longer potatoes  are required   to   orient   with  their  longitudinal  axes extending   generally   radially  with  respect  to  the impeller,  and  generally  perpendicular  to the slicing knife,  to  limit  the  maximum length of the cut slices and  the  resultant  cut strips.  Arcuate paddles can be installed  in  association  with  the impeller blades to further  improve  potato  alignment, and axial shims can be  used  to tailor the specific axial dimensions of the annular chambers.
Patent CA-1266854-A (CA)
Title: Bonded adsorbent structures and respirators  incorporating same
Inventor: BRAUN DAVID L
IPC: A62D9/00
Filed: 1986-06-25
Granted: 1990-03-20
Abstract: Abstract of the Disclosure Shaped porous filtering structures of substantially uniform thickness and density particularly suited for filtration of gases and vapors comprising  spaced  adsorbent granules unified into a solid, self-sustaining,  unitary,  impact-resistant  body by adherent binder particles, respirators incorporating such structures as the gas and vapor filtration elements and methods for making the shaped porous filtering structures are disclosed.
Patent CA-1269660-A (CA)
Inventor: THIEM JOACHIM
IPC: C07H13/04
Filed: 1986-09-12
Granted: 1990-05-29
Abstract: ABSTRACT OF THE INVENTION            Glycosyl halides which are 0-acylated or 0-alkylated at least in  the  2-position  are  transhalogenated  with  alkali  metal hydrogen  difluorides  in  a  polar-aprotic  solvent  and,  if appropriate, the product is anomerized with the addition of less than the stoichiometric amounts of an inorganic fluoride with a Lewis acid character. Depending on the substrate, the glycosyl fluorides with  the  1,2-trans  or 1,2-cis  configuration  are obtained. The glycosyl fluorides produced by the process of the invention  are  useful  glycosylating  agents  in  carbohydrate chemistry.
Patent CA-1272112-A (CA)
Inventor: CROMBIE WILLIAM
IPC: B29D30/24
Filed: 1987-04-07
Granted: 1990-07-31
Abstract: A B S T R A C T    A tire manufacturing unit having two tire building drums mounted on respective coaxial and independent half shafts butt connected in a rotary manner so as to define a single continuous shaft supported in rotary manner on a platform mounted for rotation in successive 180° steps about  a  horizontal  axis;  each  half  shaft  having  a respective independent driving device,  and one of the drums moving, during each rotation step of the platform, between a first and second work position,  through a cavity formed in the platform supporting base.
Patent CA-1254078-A (CA)
Title: Apparatus for delivering portions of a pasty  substance
Inventor: METTE MANFRED
IPC: G01F11/22
Filed: 1987-05-20
Granted: 1989-05-16
Abstract: Abstract An apparatus for conveying pasty substances, for example sausage stuffing, is designed as a radial displacer piston conveyor for a rotary angle-proportional delivery of sub-stance portions.  This is made possible by designing a control cam section controlling the substance discharge as a circular involute.  It is proposed to reduce the large and theoretically infinitely high acceleration forces acting on each displacer piston at the instant of the start of its discharge action by designing the involute section of the control cam with a run-up section and a run-off section, each, whose courses are designed mirror-inverted to each other.  The arrangement thereof is such that at the instant when one displacer piston runs onto said run-up section, the preceding piston enters the run-off section, so that, during the passage of those two cam sections, two displacer pistons, each, participate in the substance discharge. The acceleration values thereof add up to become zero.
Patent CA-1274860-A (CA)
Inventor: TER HORST GERHARDUS E R
IPC: G03G15/00
Filed: 1987-05-29
Granted: 1990-10-02
Abstract: ABSTRACT           A method and apparatus for collecting sheets  of different  lengths in a tray having first and second parts and wherein the second part of  the  tray  consists  of  a first  portion which adjoins the first part and from there extends downwardly to receive the trailing part of  sheets of  intermediate  lengths,  and  a  second  portion  which adjoins the bottom point of the  first  portion  and  from there  extends  upwardly  in order to receive the trailing part of sheets of longer lengths  than  said intermediate lengths.