baber/WOPTO huggingface dataset:
Patent CA-2021291-C (CA)
Inventor: OTA TAKASHI
IPC: C09D5/24
Filed: 1990-07-16
Granted: 2000-02-01
Abstract: Disclosed are a fine conductive particle powder comprising fine hollow spherical glass or resin particles plated with a metal and having a bulk density of 0.2 to below 0.9 g/cm3, an exothermic conductive coating or paste comprising the above powder and a synthetic resin binder, a conductive heating unit having a desirably shaped solid or solid surface coated or impregnated with the above coating or paste, and a process for producing the above conductive heating unit, whereby the conductive heating unit operable at low voltages can be obtained.
Patent CA-2026436-C (CA)
Title: Enhanced air-flow convection oven
Inventor: NEVIN IRA
IPC: F24C15/32
Filed: 1990-01-30
Granted: 1995-08-29
Abstract: An enhanced, air-flow convection oven (1) is disclosed, comprising an oven chamber liner (20) circumscribed by a thermal-ly insulated outer oven shell (10) with a heat source in a combustion chamber (30) between the shell (10) and the liner (20). Hot air flows from the combustion chamber (30) and into a uniquely constructed blower wheel assembly (60). The blower wheel assem-bly (60) has a concave central plate configuration which creates a negative pressure behind the blower wheel assembly (60), in-cluding a flow of hot air from the back of the blower wheel assembly (60) into the blower wheel assembly (60) as the wheel ro-tates. This hot air is mixed with air from within the chamber (30) to produce uniform heating throughout the chamber (30).
Patent CA-2027090-C (CA)
Title: Idle speed control apparatus and method for an internal combustion engine
Inventor: OHUCHI HIROFUMI
IPC: F02D31/00
Filed: 1990-10-05
Granted: 1994-03-15
Abstract: ABSTRACT OF THE DISCLOSURE An  improved  idle  speed  control  apparatus  for  an internal combustion  engine capable  of effectively  preventing instantaneous fluctuations  in  the number  of revolutions  per minute of the  engine when  the engine load is  instantaneously changed during  engine idling,  thereby improving the  driver's driving  sensation.   A  bypass passage  is connected  with  an intake manifold of  the engine for supplying  intake air to the engine  while   bypassing  a  throttle   valve  in  the  intake manifold.  A bypass  air controller  is disposed on the  bypass passage  for  controlling  the  amount  of bypass  air  flowing therethrough.   In one  embodiment, the  bypass air  controller operates  such   that   when  the   engine  load   is altered instantaneously during the engine  idling, the amount of intake air is gradually changed from a first  level suited to a first operating  condition of  the  engine  load to  a  second  level suited to a second operating condition of  the engine load.  In another embodiment, the amount of intake  air is first changed swiftly from  the  first  level  to  a third  level,  and  then gradually from the third level to the second level.
Patent CA-2032627-C (CA)
Title: Process for producing sodium carbonate and ammonium sulphate from sodium sulphate
Inventor: THOMPSON JACK S
IPC: C01D7/02
Filed: 1990-12-18
Granted: 1997-01-14
Abstract: A new continuous process for producing sodium carbonate and ammonium sulphate from naturally occurring sodium sulphate is disclosed.  The process comprises reacting sodium sulphate in aqueous solution with ammonia and carbon dioxide to precipitate sodium bicarbonate which is separated by filtration and converted by calcining to sodium carbonate.  The mother liquor from the precipitation of sodium bicarbonate is concentrated by evaporation to precipitate unreacted sodium sulphate, cooled to precipitated ammonium sulphate and further cooled to precipitate a double salt of sodium and ammonium sulphate.  The double salt is added to the mother liquor from the precipitation of sodium bicarbonate, prior to the evaporation, whereas the mother liquor from the precipitation of the double salt is concentrated by evaporation and added to the mother liquor from the separation of sodium sulphate.  The process, in addition to producing sodium carbonate, also produces ammonium sulphate in a purity such that it can be immediately used as a fertilizer.  The process does not produce any unwanted byproducts and avoids the use of complicated equipment, such as absorption towers.
Patent CA-2037725-C (CA)
Inventor: WINKLER RICHARD JAY
IPC: G05D9/02
Filed: 1991-03-07
Granted: 2001-05-29
Abstract: A high pressure, fluid level sensor and seal includes a body supporting a removable end cap and housing a trunnion bearing comprising a pivot disk that is pivotable about a pivot axis formed by a pair of pivot pins that are secured to the base of the end cap.      The pivot disk is connected to a control arm that freely passes through the end cap. The pivot disk is also connected to a displaces arm that engages a float or displaces in communication with fluid in a high pressure tank. A compression spring acting between the control arm and the end cap biases the pivot disk against the pivot pins. The control arm engages an operating mechanism in a controller that includes a relay. The body is secured in the wall of a high pressure tank. A high pressure seal is formed by a spacer that forms a slip fit with an annular recess on the pivot disk and which engages the end cap and O-rings. The O-rings couple the spacer to the pivot disk and couple the spacer to the end cap. Small pivotal movement of the pivot disk about the pivot pins does not disrupt the high pressure seal. The entire assembly is readily removable from the tank for servicing without requiring removal of the body.
Patent CA-2038171-C (CA)
Title: Method of calibrating enzyme immuno assay systems
Inventor: SAITO YUKIO
IPC: G01N33/543
Filed: 1991-03-13
Granted: 1996-05-07
Abstract: The present invention relates to a method of calibrating an enzyme immuno assay system.  A calibration curve is prepared by the use of standard samples having known concentrations, each one of the standard samples being measured by two optical detectors.  Conversion values of the outputs from the two optical detectors are determined from the resulting measured values, and the calibration curve is corrected on the basis of the conversion values of the outputs to establish a single new continuous calibration curve.  In this way, target materials in blood or the like can be measured with accuracy over large ranges of concentrations.
Patent CA-2044330-C (CA)
Title: Methode et dispositif perfectionnes pour ameliorer les diagraphies de production d'un puits non eruptif active
Inventor: CASTEL YVON
IPC: E21B47/06
Filed: 1991-06-11
Granted: 2002-05-14
Abstract: La méthode comporte la descente d'un ensemble de pompage et de mesure dans un puits de production pourvu d'un tube perforé dans sa partie traversant une zone productrice. Cet ensemble est fixé à l'extrémité d'une colonne de production et comporte une pompe de d'activation et au moins un ensemble de mesure des effluents produits.      Le perfectionnement consiste essentiellement en ce que l'on utilise un moyen de pompage auxiliaire tel qu'une pompe du type volumétrique par exemple, pour supprimer la perte de charge subie par les effluents durant leur traversée de la zone de mesure, qui fausse Les valeurs mesurées et provoque des flux parasites par contournement entre le tube et la paroi du puits. Par une variation du débit de la pompe volumétrique, on peut mesurer L'importance de ces débits de fuites.     Application à l'étude des puits de production pétrolière par exemple.
Patent CA-2046877-C (CA)
Title: Compact hybrid particulate collector (cohpac)
Inventor: CHANG RAMSAY
IPC: B03C3/155
Filed: 1990-12-07
Granted: 1999-05-11
Abstract: A method for removing particulates from a gas using an electrostatic precipitator (34) and a barrier filter (44) in series, i.e. baghouse (44), downstream of the electrostatic precipitator (34). The barrier filter (44) is placed downstream of the electrostatic precipitator (34) and in proximity of said electrostatic precipitator (34) to receive charged particles exiting therefrom. This series arrangement enables the barrier filter (44) to operate at significantly higher filtration velocities than normal 4.06-20.32 cm/s versus 0.76-2.54 cm/s and reduces the size of the barrier filter (44) significantly.
Patent CA-2048900-C (CA)
Title: Light rod assembly for spark detection system
Inventor: CLARKE W JAMES
IPC: G01J1/02
Filed: 1991-08-09
Granted: 1999-05-04
Abstract: A readily replaceable light rod assembly for coupling infrared energy to a photoelectric sensor element in a spark detector system used for monitoring a zone through which fine particulate matter is conveyed at high speed by pneumatic action.  The light rod assembly comprises an elongate clad glass rod of optical glass, polished at both ends, positioned inside a tubular housing of Teflon material.  The glass rod is fastened inside the housing by a set screw and both ends of the housing are threaded, with the input, or high thermal energy end, screwing into an end cap holding a quartz glass window, and the other, or output end, into the threaded receptacle of the sensor element.
Patent CA-2054061-C (CA)
Title: Recording multi-media file
Inventor: KOCH RICHARD C
IPC: G11B33/04
Filed: 1991-10-23
Granted: 1996-03-26
Abstract: A recording multi-media storage tray is provided that can store and organize different combinations of recording media.  The tray has a removable center insert that allows 3 inch computer diskettes to be placed side by side.
Patent CA-2056802-C (CA)
Title: Device for the slicing production of boards
Inventor: GOENNER SIEGMAR
IPC: B27L5/06
Filed: 1991-12-02
Granted: 1995-11-21
Abstract: A machine is described for the slicing removal of a board from a cant advanced longitudinally past a blade and pressed, from the side opposite from the blade, by means of a pressing device against the blade and a counterpressure rail mounted in front of the blade.  In contrast to conventional constructions, in which driven feed rollers for the cant are located before and beyond the actual slicing device, driven roller pairs are provided directly in the region over which the blade, which forms a very acute angle with the feed direction, extends.  The feed roller pairs are moreover floatingly journalled so that they do not affect the position of the cant.  By the novel arrangement, an overly lengthy force transmission path through the cant itself from the feed rollers to the blade is avoided.
Patent CA-2056997-C (CA)
Inventor: YANG YU-CHUNG
IPC: C07K16/00
Filed: 1990-05-18
Granted: 2001-01-30
Abstract: L'invention concerne un nouveau facteur de croissance érythropoïétique ainsi que ses procédés de production selon des techniques de génie génétique à ADN de recombinaison.
Patent CA-2059447-C (CA)
Title: Procedure for the determination of message identifiers in the data transmission network of an elevator system
Inventor: LAMBERG LAURI
IPC: G06F13/00
Filed: 1992-01-16
Granted: 1996-03-05
Abstract: A procedure is disclosed for determining the message identifiers in a CAN data transmission network of an elevator system where message identifiers are used in the transmission of messages.   Each node in the network monitors the data transmissions in the network and stores the other message identifiers in use by the other nodes.   When selecting a message identifier, the node makes use of a random number to select an unused identifier from an identifier table.
Patent CA-2066754-C (CA)
Title: Apparatus for making plastic tubing including mold blocks hingably openable and closeable
Inventor: LUPKE MANFRED A A
IPC: B29C49/00
Filed: 1990-10-29
Granted: 2001-01-30
Abstract: The invention concerns apparatus for molding tube (20) utilizing a travelling mold tunnel. The tunnel is made up of mold blocks (16) each comprising parts (13, 15) which are hinged together to be closeable to form the tunnel and openable to release tube from the tunnel. The opened mold blocks (16) from the downstream end of the tunnel are opened and returned to the up-stream end without change in their orientation to reform the tunnel about an extrusion nozzle (18) for thermoplastic extrudate.
Patent CA-2067395-C (CA)
Title: Antimetastatically acting agents
Inventor: SCHNEIDER MARTIN
IPC: A61P35/00
Filed: 1990-10-05
Granted: 2002-04-23
Abstract: The invention relates to an antimetastatically acting agent consisting of Eptalaprost, Cicaprost or combinations of TXA2 antagonist and prostacyclin derivatives.
Patent CA-2068635-C (CA)
Title: Solid bodies made of high-temperature superconducting ceramic material to which contact is made by metallic conductors, and processes for producing them
Inventor: BOCK JOACHIM
IPC: H01R4/68
Filed: 1992-05-13
Granted: 1996-07-16
Abstract: The invention relates to solid bodies made of high-temperature superconducting material to which contact is made by solid, compact metallic conductors.     To produce said solid bodies, high-temperature supercon-ducting material is either melted completely or a melt is obtained from the oxides of bismuth, strontium, calcium and copper, and, optionally, of antimony and lead. The solid, compact metallic conductors made of silver, gold, a platinum metal or an alloy containing said metals are then partially encased in the melt and the melt  is allowed to solidify. Finally, the solid body obtained is annealed together with the conductors in a first stage at temperatures of from 710 to 810°C and in a second stage in an oxygen-containing atmosphere at temperatures of from 750 to 880°C.
Patent CA-2069657-C (CA)
Title: Method of operating a semiconductor laser as a mode-locked semiconductor laser and devices for implementing the method
Inventor: LAUBE GERT
IPC: H04B10/00
Filed: 1992-05-27
Granted: 1998-04-14
Abstract: A semiconductor laser (1) is known that is monolithically integrated on a substrate (2) and whose cavity (41) has a branched structure that is simply contiguous in a topological sense.  The semiconductor laser (1) includes a plurality of regions (8-11) that enclose the cavity (41).    According to the invention, the semiconductor laser (1) is operated as a mode-locked semiconductor laser, with an alternating current flowing through at least one region in addition to a direct current.  The frequency of the alternating current corresponds to the reciprocal of the round-trip time or an integral multiple of this reciprocal of the light pulses generated by the alternating current in the semiconductor laser (1).
Patent CA-2074386-C (CA)
Title: Catalytic composite for deodorizing odorous gases and a method for preparing the same
Inventor: MATSUMOTO TOMOHIDE
IPC: B01J23/89
Filed: 1992-07-22
Granted: 1996-04-30
Abstract: A catalytic composite for deodorizing odorous gases is provided.  The composite comprises: ceramic fibers; zeolite supported on the surface of and in the interstices between the ceramic fibers; and gold and an iron oxide both supported mainly on the zeolite; the catalytic composite being so formed as to allow a gas to pass therethrough.
Patent CA-2076924-C (CA)
Title: Integral check, pressure balanced, control valve
Inventor: CLARE MANAMOHAN
IPC: F16K47/02
Filed: 1992-08-26
Granted: 1997-02-04
Abstract: The invention relates to a shower control valve assembly which includes a casing mountable in a wall with inlets for hot and cold water. A cartridge is insertable into the casing in one of two orientations so that the hot water inlet of the cartridge can be aligned with either one of the casing inlets, depending on which one is the hot water inlet. The casing has two outlets, one for the shower and the other for the tub. There is an integral bypass which takes water from the tub outlet to the shower outlet upon activation of a diverter valve. The cartridge is of the pressure and temperature balancing type, with water of the desired temperature flowing to the tub outlet and then to the tub or shower as desired. Each water inlet in the cartridge includes a check valve which, in one position allows water to enter the cartridge, and in the other position prevents water from leaving the cartridge through the inlet. This feature prevents cross flow of hot and cold water, prevents back flow into the supply pipes and, most significantly, prevents water hammer in the supply pipes.
Patent CA-2077532-C (CA)
Title: Phase control circuit
Inventor: KOBLITZ RUDOLF
IPC: H03L7/107
Filed: 1991-04-19
Granted: 2000-10-17
Abstract: PLL control circuits in horizontal oscillators, when locked, must have a low control rate so that, for example, no jitter is generated by noisy input signals. Owing to the infavourable scanning ratio between the synchronising pulse length and the line duration (4.7:64), however, the control rate at greater phase differences in the PLL input signals is low and, e.g. when a television receiver is switched over between different programme sources, it takes a relatively long time (a few half-images) for the line synchronisation to become locked again. By logically assessing an additional pulse already available or easily generated in the television receiver, the control signal for the VCO in the PLL may be switched over at greater phase deviations, e.g. to a fourfold control current. For PLL control with input signals which do not have a pulse-duty factor ratio of 50:50.
Patent CA-2086828-C (CA)
Inventor: HEILMAN ROBERT J
IPC: G09F3/02
Filed: 1991-07-03
Granted: 2003-03-18
Abstract: This relates to a color change system to be incorporated in a flexing area of an end panel of a closure (10). The color change system includes a dark background coating (40) on a flexing portion (28) of the closure end panel (12) to which there is bonded by way of an adhesive such as a varnish, ink or coating a brittle layer (44) which due to the flipping action of the flexing portion of the end panel will fracture. The brittle layer is preferably of a tight color and is colored utilizing a fluorescent dye. The combination of the background color and the fluorescent color of the brittle layer produces a first color in the original closure and when the end panel flexes and the brittle layer fractures to not only crack but also tear apart or delaminate from itself, to ref-lect its own light color much more brilliantly, the color of the color change system drastically changes to indicate tampering. This color change is irreversible. The color change system may also include a message indicia.
Patent CA-2091551-C (CA)
Title: Utility meter transponder/antenna assembly for underground installations
Inventor: CERNY DAVID L
IPC: G01D4/00
Filed: 1993-03-11
Granted: 2003-07-08
Abstract: A remote meter reading arrangement in which utility consump-tion data accumulated in an electronic metering unit located within an underground enclosure is transmitted via radio frequency signals to a handheld data collection unit or to a mobile data collection unit carried in a vehicle. An assembly for installation in the underground enclosure in-cludes an antenna enclosure, a transponder enclosure and means for en-closing and protecting an antenna within the antenna enclosure and a transponder within the transponder enclosure.
Patent CA-2091750-C (CA)
Inventor: RAHMAN MUJIB
IPC: G02B6/44
Filed: 1993-03-16
Granted: 1997-04-08
Abstract: A plurality of optical fiber ribbons, each containing a plurality of optical fibers, are loosely enclosed in a substantially fluid impervious tube of plastic material.  A plurality of such ribbon enclosing tubes are wound in S or Z fashion around a central structural member which can be covered with a plastic material.  The so-wound tubes are encircled by threads or tape to hold them in place, and a covering of helically wound yarns is applied around the tubes to provide strength.  A plastic sheath is applied over the yarns, and if desired the sheath is covered with other layers.  Any otherwise empty spaces within the tubes and between the sheath and the tubes is filled with a water blocking material which permits the ribbons to move with respect to the enclosing tubes and which permits the tubes to move with respect to the sheath and the central member.
Patent CA-2095864-C (CA)
Title: Polyamide dyeing process utilizing controlled dye addition
Inventor: HOLFELD WINFRIED THOMAS
IPC: D06P3/24
Filed: 1991-11-08
Granted: 2001-12-25
Abstract: A process for the dyeing of a fibrous article containing fibers of a polyamide polymer with an anionic dye and dyed pro-duets made by the process. The process includes immersing the article in a dyeing bath of a liquid solvent for the anionic dye. The liquid solvent and the article are heated to a temperature at least equal to the dyeing transition temperature of the fiber of polya-mide polymer. The anionic dye is added to the dyeing bath as a miscible liquid concentrate at a dye addition rate during a con-trolled dye addition period. At least a portion of the dye is added while the solvent and the article are at a temperature at least equal to the dyeing transition temperature. Stirring of the bath during the dye addition period and while the solvent and article are at a temperature at least equal to the dyeing transition temperature is done to mix the dye concentrate with the solvent in the bath to form a dilute dye solution and to provide a flow of the dilute dye solution relative to the article to cause the dye to be transported to the article. The stirring also provides, on the average, essentially uniform dye transport of the anionic dye to the article. The dye addition rate is adjusted at least while the solvent and article are at a temperature at least equal to the dyeing transition temperature so that the dye addition rate is the primary control over the rate of dye uptake by the article.
Patent CA-2096182-C (CA)
Title: Mode field diameter conversion fiber
Inventor: KANAMORI HIROO
IPC: G02B6/255
Filed: 1993-05-13
Granted: 2000-12-05
Abstract: There is disclosed an optical waveguide comprising a core portion made of a light propagating material and a cladding portion, a first dopant and a second dopant being induced into said core portion, the first dopant having a function of increasing a refractive index of the light propagating material and having a first thermal diffusion coefficient to said light propagating material, the second dopant having a function of decreasing the refractive index of said light propagating material and having a second thermal diffusion coefficient to the light propagating material larger than the first thermal diffusion coefficient under a predetermined temperature.
Patent CA-2097111-C (CA)
Title: Method of repairing electric pole made of concrete and electric pole
Inventor: TANAKA YOSHINORI
IPC: E04H12/22
Filed: 1993-05-27
Granted: 2003-02-11
Abstract: A base reinforcement fiber sheet of carbon fibers, in which the carbon fibers are arranged uni-directionally via an adhesive layer on a support sheet, is wound on the surface of a portion of a concrete electric pole to be repaired. Then, a reinforcement fiber sheet of insulating fibers, in which the insulating fibers are arranged uni-directionally via an adhesive layer on a support sheet, is wound as the outermost layer to fully cover the carbon fibers. Either before or after the winding of the carbon fibers and insulating fibers, the fibers are impregnated with a thermosetting resin, which is then cured to obtain a fiber reinforced composite material. In this way, electric poles can be readily repaired to restore the mechanical strength thereof, and it is possible to provide an electric pole, which can prevent occasional accidents and ensure daily safety.
Patent CA-2097794-C (CA)
Inventor: ODA KIYOSHI
IPC: A44B19/30
Filed: 1993-06-04
Granted: 1996-07-02
Abstract: A slider for a slide fastener, comprising: a slider body including an upper wing having a cutout; a board shaped cap resiliently received in the cutout and having a claw stopper hole; a claw stopper pivo-tally mounted in the cap and projecting through the upper wing and into the claw stopper hole; and a resilient claw stopper support mounted on a back surface of the cap and resiliently contacting the claw stopper.