baber/WOPTO huggingface dataset:
Patent CA-2018812-C (CA)
Title: Asymmetric tire
Inventor: GALANTE RICHARD LOUIS
IPC: B60C11/03
Filed: 1990-06-12
Granted: 1999-02-02
Abstract: A radial ply pneumatic tire (30) has as asymmetric tread portion (41) having circumferential grooves (50, 51, 52, 53) and diagonal grooves (55, 56) therein.  The tread is divided into three axial regions (A, B, C) of equal width, and in each region the net-to-gross ratio is different.  The rate of treadwear in the axially outermost regions (A, B) of the tread are substantially equalized by features including varying groove depths and widths, groove paths, and chamfering the edges of block elements (57, 58, 62, 63) of the tread.
Patent CA-2027226-C (CA)
Title: Information processing system
Inventor: KASAI HIROYUKI
IPC: G06F12/08
Filed: 1990-10-10
Granted: 1995-08-29
Abstract: An information processing system includes a main memory, a request source, a data buffer, a memory request control unit, and a cache invalidation control unit.  The request source generates a memory request to the main memory.  The data buffer is provided between the request source and the main memory and temporarily stores memory request information from the request source.  The memory request control unit reads out the memory request information from the data buffer to execute and control access of the main memory.  The cache invalidation control unit controls cache invalidation processing with respect to the request source on the basis of the memory request information.  The information processing system further includes a data read address buffer and a data buffer control unit.  The data read address buffer stores a storage address of the memory request information in the data buffer.  The data buffer control unit reads out the storage address in the data read address buffer to access the data buffer.  A memory request address of the memory request information read out from the data buffer is used to perform the cache invalidation processing with respect to the request source.
Patent CA-2034422-C (CA)
Title: Coated optical fiber and methods of making
Inventor: PETISCE JAMES R
IPC: G02B6/44
Filed: 1991-01-17
Granted: 1996-06-25
Abstract: A drawn optical fiber (21) is provided with inner and outer layers (42,44) of coating material to protect the optical fiber during handling and use. The coating materials are such that they are characterized by being curable upon exposure to different portions of the light spectrum. In a preferred embodiment, the coating material of the inner layer includes a photoinitiator which absorbs light in the visible portion of the light spectrum whereas the outer coating material of the outer layer includes a photoinitiator which absorbs light in the ultraviolet light portion of the light spectrum.
Patent CA-2034970-C (CA)
Title: Carbonylation catalyst system
Inventor: DRENT EIT
IPC: C07F7/18
Filed: 1991-01-25
Granted: 2001-05-15
Abstract: A catalyst system, which comprises: a) a source of a Group VIII metal; b) a phosphine having an aromatic substituent which contains an amino nitrogen atom; c) a source of protons; and d) a tertiary amine.
Patent CA-2035765-C (CA)
Inventor: KRAUSE KENNETH W
IPC: A61B17/28
Filed: 1991-02-06
Granted: 2001-06-05
Abstract: A surgical instrument that includes a rigid outer member within which is disposed a hollow inner member having rigid proximal and distal ends and a region disposed between the rigid proximal and distal ends that is relieved to render such region relatively flexible. The flexible region is integral with a portion of the proximal end disposed adjacent to the flexible region. The inner member transmits force (such as torsion) applied to its proximal end to move a cutting implement disposed at its distal end to cause it to cut tissue admitted through an opening in the distal region of the outer member. In another aspect, a region of the inner member is weakened (eg. by relieving an integral region of the member) with respect to the remainder of the inner member to cause this region to break if the force (eg. torque) applied to the inner member exceeds a predetermined threshold.      In yet another aspect, the flexible region is relieved by forming openings therein, and pliable material (such as silicone rubber) is disposed in the openings.
Patent CA-2041398-C (CA)
Title: Process for recycling of supported or contaminated pvc
Inventor: LEIDNER JACOB
IPC: C08J11/08
Filed: 1991-04-29
Granted: 1996-11-26
Abstract: A method is provided for recovering PVC from a material comprising PVC and at least one non-PVC  component.
Patent CA-2042133-C (CA)
Title: Equipment for transporting a load
Inventor: KITA HIROAKI
IPC: B61L23/34
Filed: 1991-05-08
Granted: 1997-09-09
Abstract: A load transport equipment having self-propelled trucks travelling on a predetermined route so as to transport a load by the truck, wherein an encoder is connected to a motor and the pulse number from the encoder is counted by a counter, the counted value being optically transmitted toward another self-propelled truck following the front self-popelled truck on the predetermined route, the following self-propelled truck receiving the counted value from the front self-propelled truck to obtain a difference between the received counted value and that of the following truck, so that the travel speed of the rear self-propelled truck is controlled on the basis of the difference so that the running speed is controlled in accordance with the distance between the trucks thereby preventing a rear-end collision.
Patent CA-2043235-C (CA)
Title: Digital power metering
Inventor: PORTER LAWRENCE R
IPC: G01R21/133
Filed: 1991-05-24
Granted: 1994-05-17
Abstract: DIGITAL POWER METERING                      ABSTRACT OF THE DISCLOSURE A digital power meter achieves enhanced accuracies through the utilization of a sequence of meter stage improvements. Such improvements include the utilization of a digital phase shift based cycle phase realignment following the scaling function of the meter. The cycle phase corrected signals are digitized utilizing a sampling procedure wherein two samples of both current and voltage are taken within a precisely defined sampling interval. These samples are improved by the application thereto of a truncation correction and are averaged prior to being combined to provide quantity signals such as watt, VAR, volt, amperes, and the like. By developing subinterval transfer of components of these quantities to an overflow register, errors otherwise occurring at this stage of metering are substantially eliminated.
Patent CA-2047275-C (CA)
Title: Fully floating inlet flow guide for double-flow low pressure steam turbines
Inventor: GROENENDAAL JOHN COMBE JR
IPC: F01D25/24
Filed: 1991-07-17
Granted: 2002-01-22
Abstract: A fully-floating inlet flow guide for a double-flow steam turbine includes a pair of partially overlapping, generally cylindrical sealing rings circumscribing a turbine rotor adjacent a steam inlet with each of the bands being coupled to a respective one of a pair of first stage nozzle rings positioned on opposite, sides of the inlet for directing steam into an axial flow path. The rings are provided with an annular seal at their overlapping portions such that axial expansion and contraction is accommodating without steam leakage through the seal. Radial expansion and contraction of the sealing rings is accommodated by attachment of each ring to a respective nozzle using a circumferential groove in a radially inner surface of each nozzle ring diaphragm and a tongue on each of the rings which fits into a respective groove. Each tongue has a plurality of circumferentially spaced slots and a block slidingly positioned in each of the slots. A pin extends through the blade diaphragm at each slot and extends through the corresponding block so that the blocks are fixed with respect to the diaphragm. The blocks prevent rotation of the bands about the turbine rotor while permitting radial displacement of the bands since the blocks are only slidingly held in the slots.
Patent CA-2048074-C (CA)
Title: Electrically assisted transdermal transport device and method for renewing the device
Inventor: BOCK C RANDOLPH
IPC: A61N1/30
Filed: 1991-07-29
Granted: 1995-05-09
Abstract: A device  for  electrically  assisted transport  of molecules into the skin has a renewable power source and a means for electrically assisted transport of molecules in solution through the skin of an animal.  The device has  an  anode  and  a  battery  electrolyte  in  fluid communication  in a disposable  part  of  the  means  for electrically   assisted   transport   of   molecules   in solution.  The device has an air cathode on a reusable part of the means for electrically assisted transport so that when the reusable and disposable parts join,  the battery electrolyte  and the  air  cathode  are in fluid communication.  The power source is thereby renewed and electrically  connected  to  the  means  for  electrically assisted   transport.    A   method   for   renewing   and replenishing  a  power   source  for  the  device  for electrically assisted transport of molecules in solution provides  means  for  electrically  assisted  transport having  a  reusable  part  and  a  disposable  part.   The method includes providing the reusable part with an air cathode and an anode contact on a support and providing the   disposable   part   having   an   anode   in   fluid communication with a battery electrolyte on a carrier. The  method  renews the  power  source  by  joining  the support and the carrier.   The battery electrolyte,  the air  cathode  and  the  anode  are  thus  joined  in fluid communication and the anode with the anode contact are electrically connected.
Patent CA-2048350-C (CA)
Title: Brake and turn signal adaptor for trailers
Inventor: HOPKINS EVAN L
IPC: B60Q1/38
Filed: 1991-08-02
Granted: 1995-07-18
Abstract: An electrical circuit for adapting the independent brake lights and turn signal lights on a towing vehicle to the combined brake and turn signal lights on an associated trailer.  An isolation network and a first CMOS  exclusive OR  integrated circuit  are  connected between the right turn signal light connection and brake light connection of the towing vehicle and the combined right turn signal and brake light connection on the trailer.    An  isolation  network and  a  second  CMOS exclusive OR integrated circuit are similarly connected between the left turn signal light connection and brake light connection of the towing vehicle and the combined left turn signal and brake light connection on the trailer.  The isolation network prevents feedback from the electrical lighting system of the trailer to the electrical lighting system of the towing vehicle.
Patent CA-2048976-C (CA)
Title: Motion signal detecting circuit
Inventor: KO JEONG-WAN
IPC: H04N19/423
Filed: 1991-08-12
Granted: 1996-06-18
Abstract: A  motion signal detection circuit adapted to  a  video recording/reproducing apparatus having a frequency unfolding circuit for unfolding a luminance signal of a high frequency component  included  in  the  luminance  signal  of  a   low frequency   component  into  an  original  frequency   band, comprising    a  prefilter 10 for  eliminating  the  folding carrier  and sidebands thereof included in the video  signal unfolded  by the frequency unfolding circuit, a comb  filter 60 for filtering the output of the prefilter 10 to detect  a motion   signal,   an   error   compensation   circuit   for compensating the errors included in the motion signal output from the comb filter 60.
Patent CA-2069796-C (CA)
Title: Circuit breaker with handle interlock for contacts when welded
Inventor: CHOU YU WEI
IPC: H01H73/02
Filed: 1992-05-28
Granted: 2002-01-15
Abstract: The handle of a circuit breaker is blocked from movement to the off position, when the contacts are welded closed, thereby preventing rotation of the common cross-bar on which contact arms carrying the movable contacts are mounted, by an interlock which includes radial extensions on the arms of a pivoted handle yoke which radially engage projections on the cross-bar.
Patent CA-2070184-C (CA)
Title: Textile slip agents containing polymers
Inventor: EICKEN ULRICH
IPC: D06M15/647
Filed: 1990-11-22
Granted: 2001-08-28
Abstract: The invention concerns textile slip agents with certain acrylate and or methacrylate-containing homo and/or copolymers, a process for their production and the use of these homo and/or copolymers in textile slip agents to reduce the loss of said agents from the fibre surface during the production and/or processing of said fibre.
Patent CA-2071663-C (CA)
Title: Glittering array for radar pulse shaping
Inventor: KRIKORIAN KAPRIEL V
IPC: G01S7/282
Filed: 1992-06-19
Granted: 1995-03-28
Abstract: Variable array thinning to achieve efficient radar pulse shaping for advanced radar waveforms such as pulse burst or monopulse doppler.  At the beginning of the pulse, only a few elements, spread out over the array, are turned on.  the effective amplitude can be controlled with preci-sion because each element is either off or at saturation. High efficiency is maintained because the off-state of each element is long enough so that prime power is not consumed.
Patent CA-2078885-C (CA)
Title: Pharmaceutical compositions containing amethocaine
Inventor: BOARDMAN DAVID GRAHAM
IPC: A61K31/245
Filed: 1992-01-29
Granted: 2002-03-19
Abstract: A storage stable composition for topical anaesthesia comprises amethocaine and a pharmaceutically acceptable salt pres-ent in amount of from 1 to 30 % by weight of the composition, which composition has a pH of not less than pH 7Ø
Patent CA-2080760-C (CA)
Title: Apparatus for recovering refrigerant
Inventor: SCUDERI CARMELO J
IPC: F25B45/00
Filed: 1992-10-16
Granted: 1995-11-28
Abstract: An apparatus for recovering a compressible refrigeration fluid from a refrigeration system and delivering the recovered fluid to a receiver includes a discriminator tank for discriminating between influent liquid phase fluid and gas phase fluid.  Liquid phase fluid is directed to the receiver.  Gas phase fluid is condensed and directed to the receiver.  The apparatus further includes a safety tank for preventing overfilling of the receiver and a lightweight compressor particularly adapted to refrigerant recovery.  The lightweight compressor includes self lubricating bidirectional seals and renders the recovery apparatus easily transportable to allow convenient field servicing of refrigeration systems.
Patent CA-2084393-C (CA)
Title: Two-phase clear-opaque soap
Inventor: MOTTOLA NICHOLAS
IPC: C11D17/00
Filed: 1992-12-02
Granted: 1996-12-31
Abstract: A dual-phase toilet bar is provided having a first portion that is at least translucent and a second portion that is opaque.Each portion of the bar has at least 80% by weight of its components identical.  The opaque portion incorporates a solid particulate opacifying agent.  A process is also disclosed wherein a clear composition is poured into a mould to partly fill same.  Thereafter, an opaque composition is poured into the remaining volume of the mould, this composition being essentially identical to the clear composition but also including a small amount of solid particulate opacifying agent.  Alternatively the opaque composition may be poured first into the mould followed by the clear composition.
Patent CA-2085037-C (CA)
Title: Stabilized pharmaceutical compositions comprising an hmg-coa reductase inhibitor compound
Inventor: KABADI MOHAN B
IPC: A61K9/20
Filed: 1992-12-10
Granted: 2000-11-28
Abstract: A pharmaceutical dosage form comprising an HMG-CoA reductase inhibitor compound, e.g., fluvastatin sodium, is disclosed which is stabilized against pH-related degradation by an alkaline stabilizing medium capable of imparting a pH of at least 8 to an aqueous solution or dispersion of the composition.
Patent CA-2087467-C (CA)
Title: Wide field of view optical element
Inventor: HOLMES ALAN W
IPC: G08B13/193
Filed: 1993-01-18
Granted: 1999-03-16
Abstract: A wide field-of-view optical element 12 suitable for use in a laser warning system including a frusto-conical block of optically transparent material having a first surface 14 and a second surface 16.  The  first surface 14 is parallel with the second surface 16 and coaxial therewith.  The radius R1 of the first surface 14 is less than  the radius R2 of the second surface such that the sides of the element 12 are slanted.  Reflective material is coated on the interior 17 of the first surface 14 for directing incident optical energy toward a detector 20 mounted at the second surface 16.   Similarly,  a reflective material is coated on the interior 18 of the second surface 16 for directing incident optical energy to the detector 20 via the first surface 14.  The second reflective coating on the second surface is disposed between the outer periphery thereof and a nonzero distance R3 from the center thereof to provide an aperture at which the detector 20 may be mounted.
Patent CA-2087593-C (CA)
Title: Dewatering system for sludge removal
Inventor: WILLIAMS JACK R
IPC: B01D29/01
Filed: 1991-07-18
Granted: 1998-10-06
Abstract: A dewatering system for use in the treatment of waste water which includes a tan k, an inclined filter bed having a plurality of filter elements and means for inducing a flow of air through the filter bed t o accelerate drying of the removed solids. Also disclosed are means for adjusting the angle of inclination of the filter bed and mechanica l means for removing solids from the filter elements. In one embodiment, the filter bed is disposed within an upper unit mou nted for rotation on the tank floor to facilitate cleaning of the filters.
Patent CA-2087931-C (CA)
Title: High uniformity foam forming
Inventor: BHAT DINESH M
IPC: D21F11/00
Filed: 1993-01-22
Granted: 2005-11-22
Abstract: A method of foam forming of paper includes the steps of metering to a dewatering device a controlled feed of fiber dispersed in an aqueous liquid wherein the consistency of the fiber dispersed in the liquid is between about 0.5 and about 7% by weight;recovering from the dewatering device a uniform continuous strand of between about 8 and 30% by weight; introducing a stream of a foamed aqueous admixture and the continuous strand of semi-moist pulp into a dispersing mixer having shearing action extending substantially throughout a zone substantially athwart the flow path of the uniform continuous strand and the foamed aqueous stream, to form a stream of dispersed fiber bearing aqueous foam; conducting the dispersed fiber bearing aqueous foam stream to the inlet of a positive displacement pump and thence through a headbox, and depositing the fibers on a moving foraminous support to form the paper.
Patent CA-2094968-C (CA)
Inventor: GUGLIELMI MARCO
IPC: H01P1/207
Filed: 1993-04-27
Granted: 2003-02-11
Abstract: L'invention concerne un système pour synthétiser un filtre micro-ondes comprenant plusieurs résonateurs dépourvus de vis d'accord. Le système comprend une mé-moire électronique dans laquelle sont enregistrés des signaux représentant les coefficients de couplage des éléments de couplage d'épaisseur finie et la fréquence de résonance des résonateurs, une unité de calcul com-mandée par un moyen de commande organisé pour détermi-ner automatiquement les largeurs des éléments de cou-plage et les longueurs des résonateurs à partir des-dits signaux représentant les coefficients de coupla-ge. L'invention réalise une convergence de synthèse rapide permettant de réduire considérablement le temps et le coût de développement.
Patent CA-2097488-C (CA)
Inventor: LALLIER JEAN-PIERRE
IPC: C09D9/00
Filed: 1993-06-01
Granted: 1997-06-24
Abstract: Inexpensive paint stripper compositions containing neither chlorinated nor alkaline solvents and well adapted for removing paints such as glycerophthalic, alkyd-urethane or arylic urethane paints on a variety of substrates, e.g. wood and metal substrates comprise (a) 1 to 99% by volume of an aprotic polar  solvent  chosen  from the group comprising: dimethyl sulfoxide, dimethyl formamide, N-methylpyrrolidone, N-methylmorpholine, .gamma.-butyrolactone, acetonitrile and mixtures thereof; and (b) 99 to 1% by volume of an ether selected from the family of ethers having a flash point higher than 0°C, a molar volume less than 160 and a molecule that includes one or several methoxy groups.
Patent CA-2098317-C (CA)
Inventor: TOM GLENN M
IPC: G01N33/00
Filed: 1991-12-13
Granted: 2000-06-27
Abstract: Système de détection en-ligne (100) servant à détecter en temps réel la concentration d'impuretés dans un flux de gaz et selon lequel des volumes purifiés et non-purifiés de gaz provenant du flux de gaz sont soumis à une détection de concentration afin de déterminer une valeur corrigée de concentration d'impuretés pour le flux de gaz. Selon un mode préféré de réalisation, le système utilise un distributeur (222) en communication fluide avec une unité de purification (208), un conduit d'écoulement principal (202) à travers lequel passe le flux de gaz, et un orifice de détection (212). Une soupape à positionnement sélectif (230) amène le gaz à s'écouler à travers une boucle de purification (210, 224) du distributeur vers l'orifice de détection (212) et, alternativement, à travers une boucle de dérivation (226, 228) du distributeur sans que le gaz ne passe à travers l'unité de purification, afin que son niveau d'impureté comparative dans les boucles respectives soit détecté. Le système peut utiliser des détecteurs hygrométriques lorsque l'eau représente l'impureté critique, ou des dispositifs à ondes acoustiques de surface (SAW) recouvertes de revêtements à affinité d'impureté appropriés. Le système est particulièrement utile à la surveillance de faibles niveaux de concentration d'impuretés (par exemple de 0,1 à 100 ppm environ) dans des flux de gaz utilisés dans des procédés à phase gazeuse tels que des procédés de dépôt chimique en phase gazeuse utilisés pour la fabrication de dispositifs à semiconducteurs.
Patent CA-2117064-C (CA)
Inventor: SVENSK LENNART
IPC: D21C11/12
Filed: 1992-06-04
Granted: 2002-01-08
Abstract: The present invention relates to a method for the combustion of waste liquids in connection with recovering of chemicals from the waste liquid, preferably black liquor from pulp production whereby the liquid (5 A) is injected at a given level (4) into a furnace (1, 2, 3) in which the liquid (5 A) initially is dried and the solid remainder thereafter is pyrolysed and finally burned and the chemicals are assembled on the bottom of the furnace while the exhaust gases (8) are going up through and out from the furnace (1, 2, 3) and whereby a part of the combustion air, so called primary air (11), is supplied at one or more levels (6) below said level (4) of liquid injection (5 A) and another part of the combustion air, so called secondary air (12), is supplied at one or more levels (7) between said levels for liquid injection (4) and primary air supply (6) respectively, whereby the secondary air (12) is supplied to the furnace (1, 2, 3) in such a way that the gas is forced to rotate in a plane substantially perpendicular to the longitudinal axis (13) of the furnace so that the in the furnace injected liquid (5 A) is thrown outwardly against the walls of the furnace (2) by the gas rotation during simultaneous drying and pyrolysing whereby also the so called "chimney effect" in the furnace is counter-acted.