baber/WOPTO huggingface dataset:
Patent CA-2257410-A1 (CA)
Title: Method and device for testing differential protection relays or differential protection relay systems
Inventor: GRUENERT HAGEN
IPC: G01R31/327
Filed: 1998-03-06
Abstract: The invention relates to a method and device for testing differential protection relays or differential protection relay systems.  The operating means to be protected by the differential protection relay or differential protection relay system are simulated with all their most important parameters by means of a test device. The test currents calculated in the simulation, in accordance with the means to be protected and other parameters, are sent to the differential protection relay or relay system which is connected to the testing device, so that the operating and error performances of the differential protection relay or relay system can be detected by means of the testing current applied, and can be evaluated in accordance with the specified tolerance data of the differential protection relay or differential protection relay system.
Patent CA-2257423-A1 (CA)
Title: Registration of mobile packet data terminals after disaster
Inventor: WRIGHT ANDREW S
IPC: H04L12/56
Filed: 1997-05-06
Abstract: Registration attempts by a terminal using a contention protocol to communicate with a central system are controlled by transmitting a registration index from the central system to the terminal at specified temporal periods, and modifying the value of the registration index when the terminal should attempt to register with the central system. A mode flag is transmitted from the central system to the terminal at predetermined temporal intervals. and the value of the mode flag is modified when the central system is recovering from a disaster so that the terminal refrains from immediately attempting to register with the central system.  During disaster recovery, the terminal is able to associate itself with one of a plurality of sub-intervals. The central system transmits a sub-interval designator to the terminal at regular temporal periods during disaster recovery. The central system modifies the value of the sub-interval designator after a predetermined number of the regular temporal periods. The flow of registration attempts by a community of terminals is smoothed from a situation wherein essentially the entire community of terminals is contending to register after a disaster to a situation wherein subsets of the community try to register in respective sub-intervals after the disaster.
Patent CA-2259212-A1 (CA)
Inventor: EINIG HEINZ
IPC: C07C215/30
Filed: 1997-07-08
Abstract: The invention concerns ephedrine in granular form with an active substance content of between 85 and 99.5 %.
Patent CA-2260127-A1 (CA)
Title: Drive gear for a guide rail with a partition wall or similar device in a hanging bearing from the drive gear
Inventor: BISCHOF MARKUS
IPC: E05D15/06
Filed: 1998-04-29
Abstract: The invention relates to a running gear (3) for a guide rail (1, 1') with a dividing wall or similar suspended on the running gear. Said running gear has a support roller (9) and two guide rollers (12). According to the invention, the guide rollers (12) have a vertical section in the shape of a truncated cone, and are brought up with their exterior surface (14') as far as the exterior surface (15) of the support roller (9), allowing a slight clearance (S3). Said guide rollers (12) are positioned in guide roller accommodating elements in such a way that the clearance (S2) between the rail section running above the supporting roller and the guide rollers, and the supporting rollers or guide rollers is approximately equal.
Patent CA-2260484-A1 (CA)
Title: Method and apparatus for polishing ophthalmic lenses
Inventor: SAVOIE MARC Y
IPC: B24B37/00
Filed: 1999-01-27
Abstract: The invention pertains to an improved method, a lapping tool head and a lens polishing apparatus for carrying out the method, for polishing ophthalmic lenses. The apparatus has a lapping tool head, a flexible membrane covering a lapping portion of the tool head, and pump and nozzle for pumping abrasive slurry over the lapping tool head. The new method comprises the conventional step of imparting an oscillatory movement to the lapping tool head and contacting the lens surface with the lapping portion of the lapping tool head while an abrasive slurry is pumped over the lapping tool head. The improvement comprises the additional step of periodically undulating the membrane for imparting a wave in that membrane such that the abrasive slurry can flow between the membrane and the lens surface. The lapping slurry is efficiently moved over the entire surface of the lens for improving the quality of the lenses polished by this process.
Patent CA-2261897-A1 (CA)
Title: Universal stopper
Inventor: GABBARD TIMOTHY J
IPC: A61J1/00
Filed: 1999-02-12
Abstract: A universal closure assembly designed for use in various containers having a fluid port for access to the contents of a container (10). The universal closure assembly comprising an elastomeric membrane (60) capable of being ruptured by an access means such as a female luer connector (140) or a syringe having a sharp or blunt cannula or a sharp or blunt spike for fluid communication between the contents of the container (10) and the access means.
Patent CA-2261946-A1 (CA)
Inventor: RASMUSSEN KURT
IPC: C07D417/04
Filed: 1997-07-28
Abstract: The present invention provides a method for treating a nicotine withdrawal in a mammal using a compound of formula (I).
Patent CA-2267150-A1 (CA)
Title: Syngas combustor
Inventor: POGGEMOELLER DAVID
IPC: F23G5/46
Filed: 1999-03-23
Abstract: Direct firing a turbine with syngas or biogas has received a lot of attention since the oil shortages of the 1970's. Turbines are designed to run on high BTU fuels such as natural gas. Syngas is a low BTU fuel and previous attempts at using this energy for power generation on a small scale has been difficult. By designing a specialized combustion chamber for this low BTU gas ("syngas combustor"), we can create an energy stream that will drive a gas turbine. Traditional uses of Biomass Energy include the use of high-pressure steam.  This greatly increases the operating costs of power generation for smaller operations. The O2 starved Gasifier Primary combustion chamber produces a low BTU gas that is high in CO.
Patent CA-2267978-A1 (CA)
Inventor: HUMBERT-DROZ ELIANE
IPC: A61K31/357
Filed: 1997-10-14
Abstract: A method for the systemic control of blood-sucking parasites in warm-blooded animals or for the prevention of reinfestation, which comprises administering systemically to the warm-blooded animal a compound of formula (I), wherein R, R2, R3, R6, X and n are as defined in claim 1, in an amount that affects the growth of one of the early states of development of the parasite in such a manner that the parasite does not reach the adult stage or that the adult parasite is rendered sterile.
Patent CA-2269982-A1 (CA)
Title: Method and device for drying thin coatings
Inventor: GATH DIETMAR
IPC: F26B21/08
Filed: 1997-10-14
Abstract: The invention relates to a method for drying coated workpieces, and a device to carry out such a method, whereby workpieces are exposed to dry air i.e. air with an absolute humidity of 0-10 grammes moisture charge per cubic centimeter.
Patent CA-2273100-A1 (CA)
Title: Silicon carbide reinforced silicon carbide composite
Inventor: CALANDRA SALAVATORE J
IPC: E21F16/02
Filed: 1997-12-01
Abstract: This invention relates to a process comprising the steps of: a) providing a fiber preform comprising a non-oxide ceramic fiber with at least one coating, the coating comprising a coating element selected from the group consisting of carbon, nitrogen, aluminum and titanium, and the fiber having a degradation temperature of between 1400 °C and 1450 °C; b) impregnating the preform with a slurry comprising silicon carbide particles and between 0.1 wt.% and 3 wt.% added carbon; c) providing a cover mix comprising: i) an alloy comprising a metallic infiltrant and the coating element, and ii) a resin; d) placing the cover mix on at least a portion of the surface of the porous silicon carbide body; e) heating the cover mix to a temperature between 1410 °C and 1450 °C to melt the alloy; and f) infiltrating the fiber preform with the melted alloy for a time period of between 15 minutes and 240 minutes, to produce a ceramic fiber reinforced ceramic composite.
Patent CA-2273698-A1 (CA)
Title: Heat exchanger for motor vehicle exhaust
Inventor: BENNETT EASTON
IPC: F28F27/02
Filed: 1999-06-06
Abstract: A heat exchanger for a motor vehicle exhaust includes a tubular body having a first end, a second end, a peripheral sidewall, and at least two flow passages that extend between the first end and the second end. The at least two flow passages include at least one heat exchange fluid flow passage and at least one bypass fluid flow passage. A heat exchange coil is positioned in the at least one heat exchange fluid flow passage. The heat exchange coil has an inlet and an outlet extending through the sidewall of the tubular body. A valve is provided for selecting between the at least one heat exchange fluid flow passage and the at least one bypass fluid flow passage.
Patent CA-2274666-A1 (CA)
Title: Commutateur optoelectrique de tension-phase comportant des photodiodes
Inventor: CHOW ALAN Y
IPC: H03K17/78
Filed: 1997-11-26
Abstract: L'invention se rapporte à un commutateur optoélectronique ("Opsistor") susceptible d'être commandé par différentes parties du spectre optique et capable de fournir des fréquences permettant une commutation rapide. Ce commutateur qui est fabriqué sous la forme d'un circuit intégré monolithique comporte deux photodiodes parallèles inverses, très rapprochées, de préférence disposées sur un substrat en silicium monolithique, de sorte que l'anode d'une photodiode est électriquement reliée à la cathode de la seconde électrode par l'intermédiaire d'un premier conducteur et la cathode de la première électrode est électriquement reliée à l'anode de la seconde photodiode par l'intermédiaire d'un second conducteur. L'état tension-phase de ce commutateur "opsistor" est déterminé par l'éclairage relatif des deux photodiodes et peut être rapidement commuté. Ce commutateur "opsistor" peut être mis en oeuvre dans des optocoupleurs à grande vitesse, des détecteurs de positions optiques linéaires, des détecteurs de cibles et de contours, des détecteurs pour la reconnaissance d'images, des sous-unités de base d'ordinateurs à états optiquement définis et des codeurs optiques à haute résolution.
Patent CA-2276719-A1 (CA)
Title: Anilide derivatives and antiarrhythmic agents containing the same
Inventor: TOGASHI KAZUHIKO
IPC: C07C235/16
Filed: 1999-06-29
Abstract: Preparation of antiarrhythmic agents containing novel anilide derivatives represented by the following formula as active ingredient provides a new type of antiarrhythmic agent of highly safe and effective, without effects on cardiac function.
Patent CA-2277231-A1 (CA)
Inventor: NEMOTO HIROSHI
IPC: H01M4/50
Filed: 1999-07-08
Abstract: A lithium secondary battery has small internal resistance and has good charge-discharge cycle characteristics, with a lithium transition metal compound being used as a positive active material. A portion of transition element Me in a lithium transition metal compound LiMe X O Y to be used as a positive active material is substituted by not less than two substitution elements M selected from the group consisting of Li, Fe, Mn, Ni, Mg, Zn, B, Al, Co, Cr, Si, Ti, Sn, P, V, Sb, Nb, Ta, Mo, and W, to provide LiM z Me x-z O Y, wherein M ~ Me.
Patent CA-2277454-A1 (CA)
Title: Wet process for manufacturing nonwoven fabric and apparatus therefor
Inventor: KONISHI TAKAYOSHI
IPC: D04H1/46
Filed: 1999-07-12
Abstract: This invention provides a wet process for manufacturing a nonwoven fabric, including the steps of: forming a fibrous web by supplying raw material fibers together with water onto a slope of a net-shaped wire conveyor band running on a plurality of rolls; completely forming a nonwoven fabric over the wire conveyor band by supplying water jets to the fibrous web over the wire conveyor band; transferring the formed nonwoven fabric from the wire conveyor band to another conveyor band; and drying the nonwoven fabric. Also disclosed is an apparatus using the wet nonwoven fabric manufacturing process.
Patent CA-2277465-A1 (CA)
Inventor: SCHOLZ JOHN A
IPC: H01J61/88
Filed: 1999-07-13
Abstract: An hermetically sealed arc tube which comprises a hollow body having oppositely disposed ends aligned along a longitudinal axis and containing an arc generating and sustaining medium therein. An electrode is positioned in each end of the hollow body and an ionization zone is positioned adjacent to one of the ends and is a part thereof. The ionization zone is exposed to an atmosphere different than the arc generating and sustaining medium.
Patent CA-2278261-A1 (CA)
Inventor: KU KUO-SHENG
IPC: G02C9/00
Filed: 1999-07-20
Abstract: A detachable auxiliary sunglasses with magnets are provided, including a rim, sunglasses lenses mounted within the rim, and two magnets each pivoted to a respective endpiece of the rim. The auxiliary sunglasses can be secured to a primary eyeglasses, which have two magnets in positions corresponding to the positions of the magnets of auxiliary sunglasses, by means of a bond between the magnets attracting each other. The magnets are pivoted to the endpieces of the auxiliary sunglasses are capable of turning according to the position of the magnets of the primary eyeglasses so as to maintain a close contact with the same when distance between two temples of the primary eyeglasses broadens when wearing the eyeglasses.
Patent CA-2278927-A1 (CA)
Title: Pilot based transmit power control
Inventor: WILLENEGGER SERGE
IPC: H04B1/04
Filed: 1998-01-27
Abstract: A novel and improved method for performing transmit power control is described. A signal is transmitted at a transmit power and includes a traffic channel transmitted at a traffic channel transmit power, and a pilot channel transmitting at a pilot channel (70) transmit power. The receive energy of the pilot channel is measured, and a decrease power control command (121) is generated when the receive energy is greater than a receive energy threshold. If the receive energy is less than the receive energy threshold, an increase power control command (121) is generated. The power control command (121) is transmitted to the system generating the signal.
Patent CA-2282017-A1 (CA)
Title: Progressing cavity pump
Inventor: NAYLOR ROGER LAWTON
IPC: F04C2/107
Filed: 1999-09-08
Abstract: A progressing cavity pump adapted for use in pumping liquid/solid mixtures with a solid content of about 50% has a single start helical rotor and a two start helical stator bore. The ratio of the eccentricity of the rotor to its minor diameter is about 1:4.9. The ratio of the eccentricity of the rotor to the stator lead is about 1:13.3. The pump may be truck mounted and used for pumping explosives.
Patent CA-2285365-A1 (CA)
Inventor: STEFFAN GUIDO
IPC: C07B39/00
Filed: 1998-03-19
Abstract: L'invention concerne du 2,6-dichloro-5-fluoroniconitrile pouvant être avantageusement obtenu par réaction de 3-cyano-2-hydroxy-5-fluoropyride-6-one et/ou ses tautomères et/ou ses sels et/ou leurs tautomères avec du trichlorure de phosphore et du chlore gazeux dans un solvant, sous adjonction d'un catalyseur basique à des températures comprises entre 30 et 300 ·C, puis par hydrolyse. Le 3-cyano-2-hydroxy-5-fluoropyride-6-one-sel monosodique à utiliser est un nouveau composé chimique facile à obtenir à partir de 3-cyano-2-hydroxy-5-fluoropyride-6-one et/ou ses tautomères, par réaction avec de l'alcoolat et par précipitation avec de l'acide modérément faible.
Patent CA-2285717-A1 (CA)
Title: Method and apparatus for producing strip material
Inventor: NIKITENKO EVGUENI
IPC: B21B1/02
Filed: 1999-10-07
Abstract: A manufacturing process to improve a product yield of a cast slab of malleable material. A contour cutter or press/forger with a predetermined programmer profile is used to shape each of the ends of the slab before dimensional reduction is performed. The geometrical characteristics of the contoured profile is dependent upon the amount of dimensional reduction involved.
Patent CA-2286493-A1 (CA)
Title: Full length compressible sleeve
Inventor: DYE JOHN F
IPC: A61H1/00
Filed: 1990-02-12
Abstract: A sleeve for applying compressive pressures against a patient's limb from a source of pressurized fluid, wherein the sleeve comprises a multi-layered sheath, having a proximal and a distal end. Generally parallel side edges extend between the proximal and distal ends, which side edges, on the proximal half of the sheath, are adjustably wrappable about the patient's limb, once it is inserted in the sleeve. The sheath also has a chambered front portion for juxtaposition with the front surface of a patient's limb, and a back portion for juxtaposition with the back surface of a patient's limb. A generally oval shaped pad arranged near the distal end has a compressible chamber disposed about its periphery. The front portion chamber and the peripherally disposed compressible chamber are arranged to maintain a constant base pressure therein while generally limb encircling compressive chambers are pressurized sequentially.
Patent CA-2287565-A1 (CA)
Title: Amino acid derivatives inhibiting extracellular matrix metalloproteinase and tnf alpha release
Inventor: PRIGENT DIDIER
IPC: C07D295/13
Filed: 1998-04-21
Abstract: The invention concerns compounds of general formula (X) in which Y represents in particular -CONHOH, R1 represents in particular a C3-C16 linear or branched or C3-C6 cyclized alkyl chain, R2 represents in particular a C1-C5 alkyl group, AA represents an amino acid, or an amino acid sequence, and R3 represents in particular a group of formula -NH -(CH2)2-SCH3. The invention also concerns the pharmaceutical compositions containing them, and the methods for obtaining them.
Patent CA-2288299-A1 (CA)
Title: Organic matrix for acoustic reflector array
Inventor: RINDE JAMES A
IPC: G06F3/041
Filed: 1998-04-09
Abstract: A touch sensor system, including a substrate (12), capable of propagating surface acoustic waves; and an array of reflective elements (5, 6, 7, 8) formed on said substrate, said reflective array having a plurality of reflective elements, each reflective element reflecting a portion of an incident surface acoustic wave. The reflective array is formed of an organic matrix. The organic matrix is preferably chemically bonded to the substrate, and is preferably a thermoset resin. The resulting reflective arrays are preferably stable under changes in moisture between 0% and 60% RH at temperatures between about 0-50°C. The organic matrix can also be used in a humidity or chemical sensor.
Patent CA-2288403-A1 (CA)
Title: Semi-permanent enclosure for optical data storage device
Inventor: BURROUGHS TREVOR ALAN
IPC: G11B33/04
Filed: 1996-01-10
Abstract: A semi-permanent enclosure for an optical data storage device (60) comprises a first film (50) dimensioned to overlie the read surface of device (60) and a second film (30) dimensioned to overlie the non-read surface. The enclosure includes rim means (20, 40) having an L-shaped cross-section extending around the periphery of device (60). Film (50) may have optical couplant on the surface thereof destined for attachment to device (60) in use. The optical couplant preferably has a refractive index compatible with that of device (60) to minimise losses and distorsion of signals. Optical couplant may also be used with second film (30). The optical couplant may be a material capable of flowing into minor defects on the surface of device (60). This allows minor blemishes to be repaired so that stored data is not compromised. Alternatively, the optical couplant may be a solid malleable material interposed between device (60) and the film(s) or may comprise the film itself.
Patent CA-2292288-A1 (CA)
Inventor: CHEVRIER CLAUDE
IPC: B60P3/06
Filed: 1999-12-16
Abstract: A freight rack is disclosed for the simple loading and carriage of snowmobiles or the like in the back of a pick-up truck. The disclosed rack comprises a deck section and a retractable ramp section, which can be retracted into a storage position within the deck section. The deck section is pivotally mounted to the existing cargo bed of a pick-up truck near its rear end, such that when the ramp section is extended from the rack, the rack in total can pivot down at its rearward end defined by the extreme end of the ramp section to rest on the ground. Cargo can then be driven up the ramp section onto the deck, at which point the rack will pivot back down into the cargo bed of the truck and the ramp section can be stowed. This design has significant cost and labour efficiencies over those in the prior art.
Patent CA-2295768-A1 (CA)
Title: Visual display systems
Inventor: MARGETSON GUY EDWARD JOHN
IPC: G09F21/04
Filed: 1998-06-18
Abstract: A bicycle wheel (4) is supported by a fork (6) to which a magnet (12) is attached. Attached to one spoke (8) of the wheel (4) is an elongate array (10) comprising sixteen light emitting diodes extending radially of the wheel (4). A controller (16), mounted on the spoke (8) is connected to the array (10) by a cable (18). The controller includes a memory that stores a program for controlling the sequence in which the different LEDs of the array are to be energised. By selecting the timing and energisation of the different LEDs in accordance with a predetermined program, the observer will see an apparently stationary image on the wheel notwithstanding that it is rotating.
Patent CA-2296003-A1 (CA)
Inventor: LECANN JEAN-PAUL
IPC: E21B21/06
Filed: 1999-05-07
Abstract: La présente invention concerne un dispositif de mesure du débit de déblais d'un forage remontés à la surface par l'intermédiaire d'un fluide de forage. Le dispositif comporte des moyens pour recueillir les déblais et des moyens de mesure en continu du poids des déblais recueillis. Les moyens pour recueillir les déblais comportent un réceptacle en forme de godet (16) articulé sur un axe et des moyens de basculement (20) du réceptacle de façon à vidanger le godet. Les moyens de mesure comportent une cellule de mesure (24) liée aux moyens de basculement pour mesurer une contrainte proportionnelle au poids des déblais recueillis. L'invention concerne également une méthode pour l'application d'une mesure du débit de déblais d'un forage.
Patent CA-2297696-A1 (CA)
Title: Process for controlling the diameter of a blown film web, blown up into a blown film bubble with a vertical center line between a pair of forward draw rolls and a pair of take-offrolls
Inventor: BARTH UDO
IPC: B29C55/22
Filed: 2000-02-03
Abstract: For the purpose of re-stretching, a blown film web is blown up into a blown film bubble between a pair of forward draw rolls and a pair of take-off rolls, after the blown film web has been heated in the inlet area of the blown film bubble. To hold the gas pressure in the blown film bubble constant or at such a value that the blown film web, hauled off the film bubble, exhibits a width equal to the desired width without having to refill through continuous injection of blowing air, water or a liquid with a different boiling point is filled into the film tube. The liquid collects above the pair of take-off rolls. The liquid is heated to a temperature exceeding its boiling point until the necessary pressure is reached in the blown film bubble.