baber/WOPTO huggingface dataset:
Patent CA-2023223-C (CA)
Title: Belt and drive for conversion press
Inventor: HUNT GEORGE D
IPC: B30B15/30
Filed: 1990-08-14
Granted: 1995-08-15
Abstract: A conveyor belt and drive structure are disclosed for use with a conversion press in which an upper level of an endless conveyor belt is positioned between upper and lower tooling in the press.  The conveyor belt includes a plurality of transversely and longitudinally spaced shell-receiving carrier apertures.  The shell-receiving apertures are arranged in longitudinally oriented offset lanes lengthwise of the belt for receiving and conveying shells between the tooling of the press.  The conveyor belt is driven in stepped fashion by a drive drum having a plurality of circumferentially spaced outwardly extending pins and the conveyor belt is provided with pin receiving holes for engagement by the drive pins. The pin receiving holes are arranged in lanes parallel to the lanes of carrier apertures, either outside of or between those lanes, and the drive holes are spaced from each other a distance at least twice the longitudinal spacing between adjacent carrier apertures.  This provides an optimum number of drive holes and places them in the approximate center of regions of the belt where the drive holes are surrounded by the greatest possible width of material.
Patent CA-2023446-C (CA)
Title: Packet communication method, packet communication device and packet switcher
Inventor: GOHARA SHINOBU
IPC: H04L47/43
Filed: 1990-08-16
Granted: 1993-11-16
Abstract: ABSTRACT OF THE DISCLOSURE         In a packet communication method, a packet communication device, an input transmission frame of V (b/sec) consisting of a transmission overhead of VOH (b/sec) containing control information for trans-mission and a pay load of Vp (b/sec) of c (= a+b) bytes, the outer cell consisting of an information field of a b-byte length containing transmission data and a header field of an a-byte length containing a first control information for transmitting the information field.  The transmission overhead is removed from and a second control information is added to the input transmission frame.  The input transmission frame with the second control information and without the trans-mission overhead is converted to a plurality of inner cell trains of f (= b+j) bytes length, the inner cell trains consisting of an information field of a b-byte containing the transmission data and a second header field of j (= a+d) bytes consisting of the first control information and the second control information (where f x g = h x V, h is an integer or a fraction of an integer).  Packets switching are performed on each inner cell.  A plurality of inner coils are converted to an output transmission frame of V (b/sec) having the same format as the input transmission frame for transmission.
Patent CA-2029000-C (CA)
Title: Process for the preparation of random copolymers
Inventor: TWU FRED CHUN-CHIEN
IPC: C08F210/06
Filed: 1990-10-30
Granted: 1996-12-24
Abstract: A process for the copolymerization of a mixture of monomers comprising propylene and 1-butene which comprises contacting the monomers and hydrogen in the gas phase in a single stage reaction zone, under polymerization conditions, with a catalyst system comprising (i) a solid catalyst precursor, which includes magnesium; titanium; a halogen which is chlorine, bromine, or iodine, or a mixture thereof; and a polycarboxylic acid ester containing two coplanar ester groups attached to adjacent carbon atoms; (ii) a hydrocarbyl aluminum cocatalyst; and (iii) a silicon compound containing at least one silicon-oxygen-carbon group, a temperature of from about 50°C to about 90°C, wherein:             (a) the atomic ratio of aluminum to titanium is in the range of about 10 to about 300;             (b) the molar ratio of aluminum to silicon compound is in the range of about 0.5 to about 10;             (c) the propylene partial pressure is in the range of about 50 to about 450 psi;             (d) the 1-butene partial pressure is in the range of about 10 to about 50 psi;   (e) the hydrogen partial pressure is in the range of about 0.1 psi to about 80 psi;             (f) the superficial gas velocity is in the range of about 1 to about 3 feet per second; and (g) the molar ratio of 1-butene to propylene is in the range of about 0.01:1 to about 0.4:1.
Patent CA-2030590-C (CA)
Title: Illuminated push button
Inventor: HERRON WILLIAM L
IPC: F21V23/04
Filed: 1990-11-23
Granted: 1994-09-27
Abstract: ABSTRACT OF THE DISCLOSURE         An illuminated electrical push button switch has a pair of spring contacts secured in a housing on either side of a miniature bulb.  The contacts have inclined bifurcated ends that bear resiliently against the underside of the push button.          Depressing the button causes the bifurcated contact ends to deform elastically and come together making electrical contact.          The pigtail leads for the bulb are sandwiched between the contacts and a block portion of the housing, all being held in place by a screw that also functions as a binding post for the external wire connection.
Patent CA-2032768-C (CA)
Title: Process for the removal of sodium polysulphide from run-down sodium/sulphur batteries
Inventor: BILGER EDGAR
IPC: H01M10/54
Filed: 1990-12-20
Granted: 1997-07-01
Abstract: In a process for the removal of sodium polysulphide from run-down sodium/sulphur batteries, the cells are crushed while taking safety measures.  The scrap metal is treated in a sodium cyanide solution and on separating the insoluble components the solution obtained is treated with air in the presence of manganese dioxide.  The solution then contains sodium thiocyanate and sodium hydroxide.  The latter can be reacted with CO2Na2CO3, precipitated and separated out.
Patent CA-2033047-C (CA)
Title: Process for the selective epoxidation of unsatured (met)acrylic compounds; new difunctional (met)acrylates thus obtained
Inventor: CAUBERE PAUL
IPC: C07D303/16
Filed: 1990-12-21
Granted: 2000-11-28
Abstract: Process for the epoxydation of an unsaturated (meth)acrylic compound of formula: <IMAGE> in which R1 is chosen from H and C1-C5 alkyl; R2 is chosen from H, alkyl and aryl; R3 is a linear, branched or cyclic alkylene or oxyalkylene radical containing from 1 to 12 carbon atoms, it being possible for one of the carbon atoms of R2, when the latter is an alkyl radical, to be bonded to one of the carbon atoms of R3 to form a ring; and A is chosen from O, S, NH and NR4, R4 being a C1-C12 alkyl group; by action of hydrogen peroxide on the said unsaturated (meth)acrylic compound at a temperature of between 10 DEG C and 50 DEG C in the presence of at least one catalyst chosen from alkali metal molybdates and pertungstates and in the presence of at least one phase transfer agent.
Patent CA-2035381-C (CA)
Title: Preparation and use of gene banks of human antibodies ("human-antibody libraries")
Inventor: LITTLE MELVYN
IPC: C07K7/06
Filed: 1991-01-31
Granted: 2004-11-09
Abstract: The invention relates to the preparation and use of gene banks of human antibodies (Ab). Starting from a mixture of human B-lymphocytes, their mRNA is translated into the cDNA using oligo-dT primers. Subsequently, an amplification of the Ab-specific cDNA by means of polymerase chain reaction (PCR) takes place using suitable oligonucleotide primer sequences. Expression of this amplified Ab-specific cDNA in a bacterial expression vector, e.g. the vector pFMT described below, in E. coli thus makes available a human-antibody library with a comprehensive repertoire for screening selected antigens in vitro.
Patent CA-2036372-C (CA)
Title: An input/output cache for caching direct (virtual) memory access data
Inventor: WATKINS JOHN
IPC: G06F13/14
Filed: 1991-02-08
Granted: 2002-10-01
Abstract: Hardware and software improvements in workstations which utilize a cache for increasing the throughput of Direct Memory Access (DMA) I/O on an operating system supporting multiple concurrent I/O operations. In a workstation or server having an operating system supporting multiple concurrent I/O operations system, performance may be improved significantly by including a write back cache for I/O as one of the system elements. Such write back cache supports external devices with at least two types of device interfaces: a standard system bus interface and a network control interface and significantly enhances the performance of DVMA (or DMA) data transfers through a unique combination of hardware and software support, which includes a physical cache for temporarily buffering I/O data to and from external devices, and all associated controls, an I/O cache tag array, data paths and diagnostic and programming support necessary to make an I/O cache functional.
Patent CA-2036904-C (CA)
Title: Gas turbine blades
Inventor: WRIDE VERNON M
IPC: C23C10/02
Filed: 1991-02-22
Granted: 2000-06-13
Abstract: A method of producing a gas turbine blade having an abrasive tip comprising producing a binding coat on the tip of the blade body by electrodeposition, the binding coat comprising MCrAlY where M is one or more of iron, nickel and cobalt, anchoring to the binding coat coarse particles of an abrasive material by composite electrodeposition of the particles and an anchoring coat from a bath of plating solution having the abrasive particles suspended therein, and then plating an infill around the abrasive particles. The anchoring coat may be of cobalt or nickel or MCrAlY as above defined and preferably has a thickness less than 30 µm. The infill material may also be MCrAlY as above defined. Preferably, deposition of the infill is accompanied by vibration of the blade in a direction which is substantially vertical and substantially along the axis of the blade.
Patent CA-2037078-C (CA)
Title: Mailbag support harness
Inventor: MACLAREN TERRENCE R
IPC: A45F5/00
Filed: 1991-02-26
Granted: 1995-07-04
Abstract: A harness for supporting a mailbag at waist level proximate to the front of a lettercarrier's body.   The harness  supports the weight of  the mailbag about the lettercarrier's centre of gravity and facilitates more efficient sorting and delivery of the mail.
Patent CA-2037291-C (CA)
Title: Dna fragment encoding a polypeptide having nitrile hydratase activity, a transformant containing the gene and a process for the production of amides using the transformant
Inventor: NAGASAWA TORU
IPC: C12N9/78
Filed: 1991-02-28
Granted: 2001-07-24
Abstract: Disclosed are amino acid sequences and nucleotide sequences of .alpha.- and .beta.-subunits of two types of nitrile hydratase derived from Rhodococcus rhodochrous J-l. A DNA fragment enclosing the nitrite hydratase is inserted into an expression vector and the recombinant vector is used for transformation.      The transformant contains multiple copies of the gene and can produce much higher levels of nitrite hydratase compared with conventionally used microorganisms.
Patent CA-2038445-C (CA)
Title: Process for preparation of fluoromethyl-substituted pyridine carbodithioates
Inventor: BAYSDON SHERROL LEE
IPC: C07D213/803
Filed: 1991-03-18
Granted: 1997-09-30
Abstract: A process for dehydrofluorination of a 2,6-(bis) trifluoromethyl dihydropyridine-3,5-dicarbothioic acid ester.
Patent CA-2040026-C (CA)
Title: Input matching circuit
Inventor: SHIGA NOBUO
IPC: H01P5/02
Filed: 1991-04-08
Granted: 1995-09-05
Abstract: In an input matching circuit adapted to be connected to an input circuit of a low noise amplifier, a matching point of impedance conversion is set to a point shifted from a mean value of variations of an optimum signal source impedance of the low noise amplifier so that a change of noise index is gentle even if the optimum signal source impedance of the low noise amplifier includes variations.
Patent CA-2040417-C (CA)
Title: Insertion of supplements into newspapers
Inventor: BACKMAN RALF
IPC: B65H39/075
Filed: 1990-10-05
Granted: 2002-01-08
Abstract: A method of inserting supplements into newspapers or magazines (20) and a general method of opening newspapers or magazines prior to the insertion process entail sepa-rate newspapers being transported in open state through an insertion station. The spines of the newspapers are held in firm contact with pocketlike holders (14, 45) on a conveyor (10) and the holders (14, 45) are caused to temporarily open when they pass the insertion station (60, 61), the firm contact between newspaper (20) and holders being still maintained. Apparatus for performing the method comprises a conveyor (10) and an insertion arrangement (60, 61) with means (14, 21, 22, 23, 25, 26) to open each newspaper (20) and means (60, 61) to insert a supplement into the opened newspaper. The apparatus may also include a second conveyor (40) with separate grip-pers (45) for each newspaper. The conveyor (40) extends through the conveyor (10).      The apparatus also includes means (P11, P12, P13) to temporarily open each gripper during its passage through the insertion station (60, 61; P12) of the insertion equipment. The apparatus furthermore includes means (46) to maintain orientation and position of the newspaper in relation to the gripper (45) while the latter is open in the insertion station (P12).
Patent CA-2040972-C (CA)
Title: Tunable optical filter
Inventor: CLAYTON JANE BILECKY
IPC: G02B6/38
Filed: 1991-04-23
Granted: 1995-10-31
Abstract: A tunable fiber Farby-Perot interferometer includes two aligned ferrule assemblies (22-22) having adjacent end faces separated by a gap. Each assembly includes a mirror (40) disposed transverse to a longitunal axis (28) of the assembly and embedded internally therein adjacent to the exposed end surfaces which defines the gap. Each ferrule assembly is held in a sleeve (74) disposed in an end fixture (70) with a piezoelectric transducer system (44) extending between end fixtures.Means (82-82) are provided in each end fixture for deforming slightly the sleeve to cause the ferrule assembly disposed therein to be moved into alignment with the other. The transducer system is operated to adjust the length of the gap between the exposed adjacent end faces. Also, the facilities including the transducer system are provided such that a portion or portions of it may be operated selectively to fine tune further the alignment between the fibers.
Patent CA-2041247-C (CA)
Inventor: HOSAKA TADAO
IPC: F25D21/04
Filed: 1991-04-25
Granted: 1999-08-31
Abstract: A cooling apparatus for cooling a given device which is incorporated in a computer or similar electronic equipment and generates heat by circulating a liquid coolant through the device of interest. A secondary cooling liquid exchanges heat with a primary cooling liquid in a heat exchanger and then flows into the device of the equipment. When the difference in temperature between the secondary cooling liquid and the interior of the equipment decreases beyond a predetermined value, a heat exchanging mechanism is caused to stop operating. On the increase of the difference in temperature beyond the predetermined value, the heat exchanging mechanism is caused to begin operating again. Alternatively, the operation of a secondary cooling liquid feeding mechanism may be interrupted and then set up again on the basis of the above-mentioned difference in temperature.
Patent CA-2050180-C (CA)
Title: Process and apparatus for forming glass filaments
Inventor: OKUMA KIWAMU
IPC: C03B37/04
Filed: 1991-08-29
Granted: 2002-01-15
Abstract: A process for forming glass filaments by utilizing centrifugal force, in which compressed gas is injected from a position near an interior of a flame port frame of a fiberizing burner toward a throat portion of a discharge port of the burner at an acute angle relative to the direction of discharge of a flame stream from the discharge port, so that the compressed gas is mixed with combustion exhaust gas at an inlet portion of the throat portion, and the mixed gas is injected from the discharge port of the burner in a direction generally parallel to the direction of the generatrix of the outer peripheral surface of the peripheral wall, thereby forming primary filaments into fine secondary filaments.
Patent CA-2053540-C (CA)
Title: Inductive load switch utilizing simplified gating
Inventor: EISENBART GYULA
IPC: H01H47/32
Filed: 1991-10-11
Granted: 2001-05-15
Abstract: The design of an electronic switch suitable for regulating the current supplied to inductive loads, such as magnetic bearings is disclosed. The electronic switch employs an alternate circuit design which differs from the conventional "H-Bridge" arrangement. The electronic switch is characterized by utilizing only one semiconductor switch and one rectifying element means. The novel circuit of the electronic switch reduces the complexity of the switch compared to the conventional "H-Bridge" arrangement.
Patent CA-2053575-C (CA)
Title: Lithographic printing plates containing image-support pigments and methods of printing therewith
Inventor: LEWIS THOMAS E
IPC: B41N3/03
Filed: 1991-10-16
Granted: 1995-02-14
Abstract: A lithographic printing plate that is transformable by spark-discharge techniques so as to change its affinity for ink. The plate features a layered structure including an ink-receptive substrate, a conductive layer and an ink-repellent coating. The ink-repellent coating contains a dispersion of image-support pigments that promote straight-line travel of the spark to the surface of the plate, thereby promoting accurate imaging.
Patent CA-2064729-C (CA)
Title: Coin testing apparatus
Inventor: WAITE TIMOTHY PETER
IPC: G07D5/00
Filed: 1990-08-09
Granted: 1999-10-05
Abstract: A coin testing apparatus is provided in which two oscillating magnetic fields interact with a coin and these interactions are monitored to test for the acceptability and/or the presence of a coin. The fields are associated with respective inductive coils which have a common core so arranged that not more than a minor proportion of the field of one coil interacts with the other coil. In a preferred embodiment one of the two coils encircles the other, which provides a very compact two-field coin sensing arrangement. In same embodiments one coil encircles the other but they have respective core elements.
Patent CA-2067817-C (CA)
Title: Muscarinic receptor antagonists
Inventor: ALKER DAVID
IPC: E21B29/06
Filed: 1990-11-28
Granted: 1994-06-28
Abstract: Muscarinic receptor antagonists, particularly useful in the treating of irritable bowel syndrome, of formula (I), and their pharmaceutically acceptable salts, wherein R is -CN or -CONH2; and R1 is a group of formula (a), (b), (c) or Het, where R2 and R3 are each independently H, C1-C4 alkyl, C1-C4 alkoxy, -(CH2)qOH, halo, trifluoromethyl, -(CH2)qNR4R5, -SO2NH2, or -(CH2)qCONR4R5; R4 and R5 are each independently H or C1-C4 alkyl; q is 0, 1 or 2; r is 1, 2 or 3; X and X1 are each independently O or CH2; m is 1, 2 or 3; n is 1, 2 or 3, with the proviso that when the group -(CH2)m- is attached to the 3-position of the piperidine or pyrrolidine ring, n is 2 or 3; p is 0 or 1; and "Het" is pyridyl, pyrazinyl or thienyl.
Patent CA-2069298-C (CA)
Title: Document dispensing apparatus
Inventor: GOODMAN SIDNEY
IPC: G06Q20/00
Filed: 1990-10-30
Granted: 1999-01-05
Abstract: A self service system (11A) for vending small customized documents (251-260), includes an input device (17) for receiving and storing customized input information from a customer for producing and vending a customized document (230) according to the requirements of the customer. In response to the receipt of the customized input information, a device (11A) generates and supplies cost information to the customer. Responsive to signals indicative of the correct payment being received from the customer, a device (22) produces the customized documents.
Patent CA-2074298-C (CA)
Inventor: SHIELDS CHARLES J
IPC: B01D53/04
Filed: 1992-07-21
Granted: 2002-10-01
Abstract: A process for the removal of 1-chloro-2,2-difluoroethylene from 1,1,1,2-tetrafluoroethane by contacting the mixture with a zeolite having a mean pore size in the range of 3.5.ANG. and 4.8.ANG. and having potassium as counter cation. The zeolite having potassium as counter-cation may be produced by cation-exchange with a commercially available zeolite, for example AW-500.
Patent CA-2077440-C (CA)
Title: Apparatus and method of automatic gain control in a receiver
Inventor: FELDT DANIEL C
IPC: H03G3/20
Filed: 1992-03-06
Granted: 1999-01-12
Abstract: A radio receiver (107) including at least two amplifier (245, 247, 207) stages each having adjustable gain. The receiver (107) generates a first and a second control signal (267, 229) In absence of receiving an input signal, the receiver (107) adjusts the gain of at least the first of the at least two amplifier stages (207) with said first control signal (229). Upon generation of the second control signal (267) the gain of the first of the at least two amplifiers stages (207) is maintained at a constant level. The gain of a second of the at least two amplifier stages (247) is adjusted with said first control signal (229), producing an output signal (269). A predetermined amplitude of the output signal (269) is maintained while receiving an input signal.
Patent CA-2081267-C (CA)
Title: Package having product clamping for card-like products
Inventor: DICKIE ROBERT G
IPC: B65D5/50
Filed: 1992-10-23
Granted: 1996-06-04
Abstract: A package for one or a plurality of card-like items is provided, having a protective outer shell and an inner insert into which the card-like items may be placed. The shell and insert may be a monolithic structure, or they may be produced separately, possibly of different materials -- although both are typically corrugated cardboard. The insert has front, bottom, and rear articulated panels, each having a fold line along the length thereof so that each panel protrudes inwardly into the interior of the shell at the fold line, and a cover panel. At least one and usually a plurality of slots is formed in each of the articulated panels, so that an edge of any card-like item to be placed into the package is inserted into the slots. In general, as the edge of each card-like item intrudes into the slot in the bottom articulated panel, and the cover panel is closed over the top edge, at least the rear articulated panel tends to protrude further into the shell to secure the item. Compression tabs are provided to co-operate with the cover panel and the top of the shell, so as to enhance the clamping action for each card-like item. The spaces formed outside the insert and within the shell provide a measure of crush protection for the products, and the articulation of the panels of the insert provide a measure of shock absorption for each card-like item secured within the package.
Patent CA-2087406-C (CA)
Title: Vibration driven motor
Inventor: TSUKIMOTO TAKAYUKI
IPC: H02N2/16
Filed: 1993-01-15
Granted: 1998-09-29
Abstract: In a vibration driven motor or actuator, which has members for generating a first bending vibration and a second bending vibration in a direction different from the first bending vibration therein,  and in which a combined vibration of the first bending vibration and the second bending vibration is caused, rigidities in two directions of the vibration member are set to be equal to or substantially equal to each other.