baber/WOPTO huggingface dataset:
Patent CA-2023359-A1 (CA)
Title: Cooling system for a semiconductor element, semiconductor module including such a system and a thermally conductive member therefor
Inventor: SHOJI MITSUYOSHI
IPC: H01L23/473
Filed: 1990-08-15
Abstract: ABSTRACT OF THE DISCLOSURE        A cooling system for a semiconductor element comprises a heat flow path including a thermally conductive member interposed between a surface of the element and a surface of a cooling block for conducting heat between them.  The member is slidable relative  to at least one of the surfaces at a region on of sliding contact.   To reduce wear, without reducing thermal conductivity, at the region of sliding contact, at least one of the thermally conductive member and the surface contacted thereby carries a fixed thin film comprising fluorine-containing lubricant, of thickness preferably in the range 2 nm to 100 nm.  The fluorine-containing lubricant is chemically bonded to the surface carrying it, or alternately the thin film comprises the fluorine-containing lubricant and a support layer therefor fixed to the surface carrying said thin film, molecules of said lubricant being anchored in the support layer.
Patent CA-2023403-A1 (CA)
Title: Molded case circuit breaker variable arc exhaust shield
Inventor: DOUGHTY DENNIS J
IPC: H01H9/34
Filed: 1990-08-16
Abstract: An industrial-rated molded case circuit breaker employs a pair of movable contact arms to interrupt circuit current through each phase of a multi-phase electrical power distribution circuit. A contact arm guide outboard the movable contact arm guides and directs the arms during rapid arm acceleration upon overcurrent conditions. A pair of protrusions formed on the abutting surfaces of the contact arms prevents the arms from distortion under the electrodynamic attraction generated during intense overcurrent conditions. A flexible arc gas exhaust-seal is arranged between the movable contacts and the line strap connectors to seal the circuit breaker enclosure while controllably exhausting the arc gases that occur upon such intense overcurrent conditions.
Patent CA-2024091-A1 (CA)
Title: Rail car mover
Inventor: CURTIS FREDERICK D
IPC: B60F1/04
Filed: 1990-08-27
Abstract: ABSTRACT OF THE DISCLOSURE      An apparatus and method is disclosed for an improved rail car mover for moving a rail car over a metallic rail track.  The appar-atus comprises a frame member supporting a motive power system and a plurality of primary drive wheels secured to the frame member. A plurality of rail guide wheels provide alignment of the rail car mover on the rail tracks.  Plural couplers are secured to the frame member for coupling with a rail car to enable the rail car mover to move the rail car.  Each of the primary drive wheels comprises a resilient rubber-like material disposed on the circumferential surface area thereof for providing a high coefficient of friction between the primary drive wheels and the rail track for moving the rail car mover over the rail track.  A second power transmission provides motive power to the plurality of rail guide wheels for assisting the primary drive wheels in moving the rail car mover over the rail tracks.   The invention may optionally include a novel differential locking system and a guide wheel moving system.
Patent CA-2025000-A1 (CA)
Title: Method of producing halftone images
Inventor: SCHILLER STEPHEN N
IPC: G03G15/01
Filed: 1990-09-10
Abstract: Abstract:           An improved method is described for producing halftone images with halftone cell dimensions and orientation to match a desired screen grid by choosing reference halftone gray values for each pixel in a supertile of representative halftone cells, testing source pixel gray values against corresponding reference gray values and selectively displaying corresponding pixels, where the supertile includes more than one halftone cell, is composed of whole pixels, can tile the source image plane when placed side-by-side with copies of itself, and includes halftone cells on adjacent supertiles that, in tiling the plane, align exactly or closely to approximate a smooth halftone screen. The invention also includes ways of manipulating the supertile for faster output of a halftone image.
Patent CA-2025369-A1 (CA)
Inventor: FIELDS DONALD L JR
IPC: C07F/
Filed: 1990-09-14
Abstract: There is disclosed a process for producing the alkali metal salts of N-phosphonomethylglycine which comprises heating to an elevated temperature a di-alkali metal salt of N-alkyl-N-(2-hydroxyethyl)-aminomethylphosphonic acid.
Patent CA-2026274-A1 (CA)
Title: Imidazoles
Inventor: HARRIS NEIL V
IPC: A61P9/10
Filed: 1990-09-26
Abstract: ABSTRACT        Imidazole derivatives of the formula   wherein R1 represents halogen, alkyl or alkoxy, n is O to 5, R2 represents hydrogen or alkyl, R3 represents hydrogen or alkyl optionally substituted by halogen, hydroxy, acyloxy alkoxy, hydroxyalkoxy, acyloxyalkoxy, or by optionally substituted phenyl, or the groups R3  and the carbon atom to which they are attached together form a cycloalkane or cycloalkene group, are pharmaceutically useful as anti-atherosclerotic agents.
Patent CA-2028011-A1 (CA)
Inventor: GILL MICHAEL J
IPC: G01P5/18
Filed: 1990-10-19
Abstract: A measurement system for measuring the time for a signal to pass between two transducers TDR1,2 to allow fluid speed or flow to be determined in a gas meter for example. Each transducer can transmit or receive signals. The system is controlled by a microcontroller 31 and a signal with a phase change acts as a marker which is transmitted from transmitter 21 via matching stage 22,23 from one transducer and is received by the other. On receipt via the matching stage and amplifier 24 it is sampled by capacitor array 25 and detected in detector 29. Amplitude information from array 25 is made available to the microcontroller to compute time of signal travel and hence flow rates.
Patent CA-2029390-A1 (CA)
IPC: H04L12/56
Filed: 1990-11-06
Abstract: A circuit is provided for forming fixed length blocks of information units received from one network for transfer to another.  The actual information from each serially received information unit is stored in a receive buffer.  A block header register is provided to store the logical channel number, block byte count, and a bit map having locations corresponding with each of the actual information units stored in the receive buffer.  Once all of the information units have been received, the header register provides its output to the receive buffer for storage in a header location.  The receive buffer thus forms a fixed length block which can be transferred to another network for processing.
Patent CA-2029899-A1 (CA)
Title: Process for the fabrication of carboxylic acids by reacting alcanes and formates
Inventor: LAZZERI VERONIQUE
IPC: B01J27/02
Filed: 1990-04-05
Abstract: PCT No. PCT/FR90/00243 Sec. 371 Date Feb. 5, 1991 Sec. 102(e) Date Feb. 5, 1991 PCT Filed Apr. 5, 1990 PCT Pub. No. WO90/12779 PCT Pub. Date Nov. 1, 1990.To produce a carboxylic acid R1-COOH, in which R1 is a tertiary branched alkyl residue or a cycloalkyl residue with one or more rings, which may be attached, and possibly substituted by at least one alkyl residue, the alpha carbon atom of the carbonyl group being a tertiary carbon atom, a branched or cyclic alkane R1H, in which R1 is a branched alkyl residue or a cycloalkyl residue with one or more rings, which may be attached, and possibly substituted by at least one alkyl residue, the alpha carbon atom of the hydrogen atom being a tertiary carbon atom or a secondary carbon atom capable of being rearranged during reaction to a tertiary atom, is reacted in the presence of an acid catalyst with a formiate H(CO)O(CR2R3R4), in which R2, R3 and R4 denote hydrogen or alkyl, under the three following conditions: that R2, R3 and R4 are not simultaneously hydrogen; that the formiate yields, in the reaction medium, directly or following a rearrangement, a stable R2R3R4 C+ cation; and that the alkane R2R3R4CH formed can be easily eliminated from the reaction medium.
Patent CA-2030215-A1 (CA)
Title: Phenolic antioxidant composition
Inventor: LAM WILLIAM Y
IPC: C10M135/02
Filed: 1990-11-19
Abstract: ABSTRACT OF THE DISCLOSURE           A partially sulfurized, phenolic antioxidant having good copper corrosion properties is prepared by reacting a liquid mixture of phenols, which mixture includes at least one reactive, hindered phenol, with sulfur chloride in proportions to provide from about 0.3 to 0.7 gram atoms of sulfur per mole of reactive phenol.
Patent CA-2034159-A1 (CA)
Title: Method and apparatus for reducing the turn-around time in facsimile transmission
Inventor: BINGHAM JOHN A C
IPC: H04N1/32
Filed: 1991-01-15
Abstract: Abstract Previously recommended methods of transmitting facsimile data on the telephone network resulted in periods of time when there is no signal present in the network; one consequence of this was that the retraining time required for the facsimile modem's receiver after each quiet period was undesirably long. This problem is solved by the high-speed transmitter sending two or more holding tones whenever it is not sending training or facsimile signals; these tones prevent re-routing of a telephone connection and allow the high-speed receiver to continue to track data clock and carrier frequencies, thereby considerably reducing the time required for retraining.
Patent CA-2035533-A1 (CA)
Inventor: ELONEN JORMA
IPC: D21D5/26
Filed: 1991-02-01
Abstract: The method in accordance with the present invention is characterized in that at least a portion of the suspension is introduced by a centrifugal pump (10) to a centrifugal separation or is subjected by a centrifugal pump to a centrifugal separation and is introduced by the centrifugal pump to a further centrifugal separation (40), and the suspension is divided at least once into two fractions, of which the heavier portion or fraction containing less gas is discharged from the apparatus and the lighter portion or fraction containing more gas is returned back to the suction side of the centrifugal pump. The apparatus in accordance with the present invention is characterized in that the casing of the centrifugal pump is connected to a centrifugal separator (40) for dividing the suspension into two fractions, said separator having a conduit (42) for the discharge of the heavier fraction from the separator and a conduit (46) for returning the lighter fraction to a channel leading to the suction side of the pump. <IMAGE>
Patent CA-2035676-A1 (CA)
Inventor: OCHSNER JAMES P
IPC: C08K7/18
Filed: 1991-02-05
Abstract: TITLE COATED, HEAT-SEALABLE AROMATIC POLYIMIDE FILM     HAVING SUPERIOR COMPRESSIVE STRENGTH      ABSTRACT OF THE DISCLOSURE    An aromatic polyimide film coated with a thermally stable, heat-sealable thermoplastic polyimide for use as a wire insulation for superconducting magnets is disclosed.  The inclusion of inorganic particles in the film improves compressive strength of the coated polyimide film.
Patent CA-2036181-A1 (CA)
Title: Differential current protection circuits
Inventor: KESSLER LELAND L
IPC: G05B6/00
Filed: 1991-02-12
Abstract: 55,450 ABSTRACT OF THE DISCLOSURE A  differential  protection  circuit  includes a pair  of  current  transformers  each  having  a secondary winding and each  being  inductively  coupled  to  a power conductor at a different location.  The secondary windings of these transformers are electrically connected in series with  each  other  in  a  loop  in bucking arrangement.  A resistor  is  connected  in  parallel  with  the secondary winding  of   each  transformer.    Control  circuits  are connected to sense a  voltage signal  appearing across the resistor and  to take  appropriate action  when the sensed voltage reaches  a  predetermined  level.    An additional winding  on  one  of  the  transformers provides isolation between the  loop  and  one  of  the  control  circuits to prevent  false  tripping  of  the  differential protection circuit.
Patent CA-2039016-A1 (CA)
Title: Fungicidal azolylethane derivatives
Inventor: SEELE RAINER
IPC: C07D521/00
Filed: 1991-03-25
Abstract: O.Z. 0050/41505 ABSTRACT OF THE DISCLOSURE: Azolylethane derivatives of the formula I                                I, where A and B are each alkyl, phenyl, biphenyl, naphthyl, benzyl, cycloalkyl, alkoxy, alkylthio, phenoxy, benzyloxy, phenylthio, methoxycarbonylethyl or hetaryl, these radicals being substituted or unsubstituted, D is halogen, alkoxy, alkylthio, phenylthio or phenoxy, these radicals being substituted or unsubstituted, X is CH or N, plant-tolerated acid addition salts and metal complex compounds thereof, and fungicides containing these compounds.
Patent CA-2040655-A1 (CA)
Title: Method of, and apparatus for, heat treating a material web provided with a liquid or paste-like preparation
Inventor: BALDINGER HANSJORG
IPC: B29C35/10
Filed: 1991-04-17
Abstract: Prepregs are fabricated in a substantially horizontal treatment chamber by heat treating a material web impregnated with a thermosetting resin. In this treatment chamber, the material web is subjected to blowing directed toward the material web and held thereby in suspension. The blowing air heats the material web and dilutes and conveys away solvent vapors. Alternately with zones of blowing directed toward the material web, there are arranged radiant-heating zones.
Patent CA-2040846-A1 (CA)
Inventor: KONDO KAZUO
IPC: B29C48/10
Filed: 1991-04-19
Abstract: A tubular multilayer film including at least two, biaxially stretched tubular layers each formed of a polypropylene resin, wherein the innermost layer contains spherical antiblocking agent particles having an average particle size of 0.2 to 5 .mu.m in an amount of 0.1 to 0.7 % by weight, and the outermost layer is free of the spherical antiblocking agent particles is disclosed.  The multilayer film may be prepared by biaxially stretching a multilayer tubular raw sheet having an innermost polypropylene layer containing spherical antiblocking agent particles and an outermost polypropylene layer free of such antiblocking agent particles
Patent CA-2043055-A1 (CA)
Title: Disc-holder assembly
Inventor: NAGANO YASUHIKO
IPC: B24D9/08
Filed: 1991-05-22
Abstract: ABSTRACT OF THE DISCLOSURE          A disc holder assembly having a disc holder and a surface finishing disc member.  The disc holder has a lower circular surface which includes a coaxial concave portion having a projection extending downwards from its center, a planar portion extending outward from the outer edge of the concave portion, and a sheet fastening member fixed to the planar annular surface.  The projection includes a shaft portion and a distal head portion of larger diameter than the shaft portion.  The surface finishing disc includes a surface finishing layer (e.g., coated abrasive sheet) on its lower surface, a sheet fastening member on its opposite surface and a central opening of the same diameter of the shaft portion of the projection.  The opening of the disc member is forced over the head portion of the projection so that the sheet fastening members are secured as they contact to firmly hold the disc member within the disc holder.
Patent CA-2043446-A1 (CA)
Title: Optical switching connector
Inventor: UEMURA YASUO
IPC: G02B26/08
Filed: 1991-05-29
Abstract: OPTICAL SWITCHING CONNECTOR                 ABSTRACT OF THE DISCLOSURE               Disclosed is an optical switching connector including a ferrule plate, which fixes an end of an optical fiber to a predetermined position, has pin grooves formed in parallel at its both ends, and has at least one of its pin grooves formed to a width enabling horizontal movement of a reference pin, pin holding members which position the reference pin in said pin grooves, and a frame body which houses said ferrule plate and pin holding members.  The optical switching connector is characterized in that the pin holding members are provided individually for each pin groove and provision is made at the both sides of the pin grooves of members for pressing the pin holding members corresponding to the pin grooves where the reference pins can move horizontally to the ferrule plate.
Patent CA-2044343-A1 (CA)
Inventor: SNELLING CHRISTOPHER
IPC: G03G21/00
Filed: 1991-06-11
Abstract: A resonator suitable for generating vibratory energy is arranged in line contact with the back side of a charge retentive member bearing an image on a surface thereof, in an electrophotographic device, to uniformly apply vibratory energy to the charge retentive member. The resonator comprises a vacuum producing element, a vibrating member, and a seal arrangement. When the vibratory energy is to be applied to the charge retentive surface, a vacuum is applied by the vacuum producing element at the point of contact with the charge retentive surface resonator, to draw the surface into intimate engagement with the vibrating member, and seal arrangement. The invention has application to a transfer station of enhancing electrostatic transfer for toner from the charge retentive surface to a copy sheet, and to a cleaning station, where mechanical vibration of the surface will improve the release of residual toner remaining after transfer.
Patent CA-2044689-A1 (CA)
Title: Multilevel inclusion in multilevel cache hierarchies
Inventor: TIPLEY ROGER E
IPC: G06F12/08
Filed: 1991-06-14
Abstract: MULTILEVEL INCLUSION IN MULTILEVEL CACHE HIERARCHIES                Abstract A method for achieving multilevel inclusion in a computer system with first and second level caches. The caches align themselves on a "way" basis by their respective cache controllers communicating with each other as to which blocks of data they are replacing and which of their cache ways are being filled with data. On first and second level cache read misses the first level cache controller provides way information to the second level cache controller to allow received data to be placed in the same way.  On first level cache read misses and second level cache read hits, the second level cache controller provides way information the first level cache controller, which ignores its replacement indication and places data in the indicated way.  On processor writes the first level cache controller caches the writes and provides the way information to the second level cache controller which also caches the writes and uses the way information to select the proper way for data storage.  An inclusion bit is set on data in the second level cache that is duplicated in the first level cache.  Multilevel inclusion allows the second level cache controller to perform the principal snooping responsibilities for both caches, thereby enabling the first level cache controller to avoid snooping duties until a first level cache snoop hit occurs.  On a second level cache snoop hit, the second level cache controller checks the respective inclusion bit to determine if a copy of this data also resides in the first level cache.  The first level cache controller is directed to snoop the bus only if the respective inclusion bit is set.
Patent CA-2045207-A1 (CA)
Title: Paper surface treating agent
Inventor: HAMADA MASAO
IPC: D21H21/22
Filed: 1991-06-21
Abstract: VI. ABSTRACT OF THE DISCLOSURE     The present invention provides a paper surface treating agent and is characterized in that its active ingredient is a copolymer which is prepared by emulsification polymerization of a monomer composition comprising a number of monomers in a given ratio in the presence of an anionic emulsifier and which has a glass transition temperature of over 80°C.      Using the paper surface treating agent according to the present invention yields a coat with fine pores on the surface of paper to provide an excellent gloss thereon and offers good printing ink set to improve the printability.
Patent CA-2046334-A1 (CA)
Inventor: YOKOYAMA IKUO
IPC: F16K5/06
Filed: 1990-12-18
Abstract: La présente invention vise un clapet à bille où la rotation de la bille (1) logée dans une boîte à clapet (8) commande l'ouverture et la fermeture d'un clapet. Le mécanisme présente un orifice (4) ménagé dans un logement (3) de la bille et des tubulures (5) reliant le côté amont de l'orifice (4) et la boîte à clapet (8) ainsi que d'autres tubulures (6) reliant le côté aval de l'orifice et la boîte à clapet (8). Le logement (3) ménagé dans la bille (1) est percé d'une grande ouverture à une extrémité (30) et d'une petite ouverture à l'autre extrémité (31). Les tubulures d'alimentation respectives (5, 6) sont façonnées de manière à relier le logement (3) à la boîte à clapet (8) lorsque le clapet est en position ouverte, et l'ouverture de la tubulure (32) est approximativement de la même dimension, lorsque l'élément porteur du siège (11) du côté de la plus petite ouverture de la bille fait face à cette dernière, que l'ouverture du logement de la bille (31), de son plus petit côté.
Patent CA-2046646-A1 (CA)
Inventor: PEFEROEN MARNIX
IPC: A01N63/23
Filed: 1990-02-14
Abstract: De nouvelles souches de Bacillus thuringiensis, qui sont enregistrées auprès du DSM sous les numéros de dépôt 5131 et 5132, produisent pendant la sporulation des protéines cristallines ayant une action toxique sur les coléoptères. Ces protéines cristallines contiennent des protoxines de 74 kDa et 129 kDa, respectivement, qui peuvent produire des toxines de 68 et 66 kDa, respectivement, comme produits de digestion de trypsine. Une plante, dont le génome transformé au moyen d'une séquence d'ADN provenant de l'une des deux souches et codant pour sa toxine respective, résiste aux coléoptères. Chaque souche, ou ses cristaux, ses protéines cristallines, sa protoxine ou sa toxine, peuvent être utilisés comme ingrédient actif dans une composition insecticide contre les coléoptères.
Patent CA-2047252-A1 (CA)
Inventor: JONES STEPHEN W
IPC: E05B67/00
Filed: 1991-07-17
Abstract: ABSTRACT OF THE DISCLOSURE           A portable locking device is disclosed in which a battery powered alarm circuit monitors the locking mechanism and produces an alarm signal when tampering is detected.  The locking mechanism includes a cable wound on a spool disposed within a tamper resistant housing.  The cable may be wound off the spool, passed around a secure object (such as a street lamp standard) and the article to be protected (such as a bicycle) and locked back into the housing.  The alarm circuit includes a sensor loop which includes the cable,  so that cutting of the cable can be detected, and an alarm signal generated.
Patent CA-2047443-A1 (CA)
Title: Polyurethane golf ball
Inventor: WU SHENSHEN
IPC: A63B37/00
Filed: 1991-07-19
Abstract: POLYURETHANE GOLF BALL                 Abstract of the Disclosure The golf ball is made from a composition of a polyurethane prepolymer and a slow-reacting polyamine curing agent and/or a difunctional glycol.  The slow-reacting polyamine curing agents and difunctional glycols are 3,5-dimethylthio-2,4-toluenediamine; 3,5-dimethylthio-2,6-toluene-diamine; N,N'-dialkyldiamino diphenyl methane; trimethyleneglycol-di-p-aminobenzoate; polytetra-methyleneoxide-di-p-aminobenzoate; 1,4-butanediol; 2,3-butanediol; 2,3-dimethyl-2,3-butanediol; ethylene glycol; and mixtures thereof.