baber/WOPTO huggingface dataset:
Patent CA-2247993-C (CA)
Title: Thrust disc bearings for rotary cone air bits
Inventor: WAGONER ROBERT
IPC: F16C19/49
Filed: 1997-03-26
Granted: 2005-05-31
Abstract: A radially disposed thrust bearing assembly for rotary cone rock bits (10) consists of a first non-rotating radially disposed steel thrust bearing disc (50) and an adjacent, carbide thrust bearing disc. One of the thrust bearing discs is pressed into a disc retention socket (38) formed in the end of a spindle bearing (28)extending from the end of a main axially aligned bearing cantilevered from a leg (13) of the bit and the other thrust bearing disc (40) is pressed into a disc retention socket (39) formed in the rotary cone (18). An edge of the carbide disc is formed with large valleys (45) and peaks (44), the robust undulations resist cracking when the carbide thrust bearing disc is pressed into its respective socket. Unique air passages (32, 33, 34) and channels (36) are formed in the main and spindle bearings to direct cooling air to the thrust bearing discs. A second embodiment of a radially disposed thrust bearing assembly for rotary cone rock bits consists of a pair of preferably carbide thrust buttons (340, 350), each of which has a central bore (342, 352) and a plurality of channels (360, 370) on its back face. The channels and central bore communicate with an air passage (334) through the bit so as to provide a flow of cooling fluid such as air to the back of each thrust button. The invention further includes thrust bearing systems in which both of the thrust buttons comprise hard metal or sintered material.
Patent CA-2248368-C (CA)
Inventor: MCGIRK RICHARD HEATH
IPC: C10M149/10
Filed: 1996-11-01
Granted: 2004-12-28
Abstract: Substantially linear ethylene polymers, such as ethylene/octene copolymers and ethylene/propylene/diene modified polymers, when added in a viscosity modifying amount to an oleaginous material, such as a lubricating oil, provides the material with a viscosity index that exceeds that of the material alone. The substantially linear ethylene polymers, prepared by constrained geometry catalysis, may be grafted with one or more unsaturated organic compounds, such as maleic anhydride, that contain ethylenic unsaturation. The grafted polymer may be further functionalized by reactions with, for example, an alcohol or an amine compound. The substantially linear ethylene polymers, when subjected to shearing action either before or after addition to an oleaginous material, improve shear stability of the oleaginous material. The substantially li near ethylene polymers, whether grafted, grafted and further reacted or not, also work as a thickening agent for compositions such as those used in greases, cable filling coumpounds and cosmetics. In addition, the substantially linear ethylene polymers provide effective results when blended with other components of conventional oleaginous material compositions.
Patent CA-2251295-C (CA)
Inventor: OKA YASUHIRO
IPC: A47L9/08
Filed: 1998-10-22
Granted: 2002-08-20
Abstract: A rotating brush including a hollow cylindrical rotor having through holes in its peripheral wall and bristles on its peripheral surface is provided in a nozzle of an upright electric vacuum cleaner. A reflux passage connecting a fan chamber in the cleaner body and an end of the rotor is provided so that a slip stream of an electric fan for producing a suction stream jets out into the nozzle from the rotor through the holes. A fan for sucking air outside the nozzle is provided at the other end of the rotor so that the sucked air also jets out into the nozzle through the holes. In another electric vacuum cleaner, the rotor of the rotating brush is not provided with through holes but the slip stream of the electric fan is caused to blow the peripheral surface of the rotating brush from its end.
Patent CA-2251501-C (CA)
Inventor: NEMETH RONALD
IPC: H04M3/52
Filed: 1998-10-26
Granted: 2002-12-24
Abstract: A method for analyzing international long distance dialing errors and automatically completing a call if the error can be determined comprises the steps of receiving a dialed country code, city code and directory number. A potential error is determined by comparing one or pairs of the dialed country code and city code or the city code and dialed directory number or the combination of all three elements with predetermined valid dialing sequences for the dialed digits. For example, an error can be located between the country code and city code when a foreign telephone network has added a digit, for example, to expand the number of directory numbers available within a geographic area. A list of obsolete country codes, city codes or combinations thereof is stored in memory along with updated country codes and city codes. In one embodiment, a corrected dialed number is automatically redialed without further action by the caller. In another embodiment, the existence of a potential error in a dialed number is announced to the caller. The caller can further be prompted to agree with a reasonable correction of the dialed number and permit the automatic readiling of the telephone number intended. Apparatus for performing the analysis may comprise a known long distance network adjunct processor including a voice interactive system and access to a database of obsolete and valid international calling formats. In an alternative embodiment, even the dialed directory number may be corrected via access to a remote directory number database or international operator assistance may be provided.
Patent CA-2252073-C (CA)
Title: Reformer and method for operation thereof
Inventor: ABE FUMIO
IPC: H01M8/06
Filed: 1998-10-27
Granted: 2003-05-13
Abstract: A reformer disposed in the flow path of a reactant fluid includes:  a catalyst unit capable of generating hydrogen from a reactant fluid containing an organic compound or carbon monoxide, by catalysis, and an electrically heatable heater unit.  An electrically heatable catalyst unit includes: any of a sintered material, a metallic material, a composite material thereof, at least a portion of each of these materials having an electrically heatable property, and a composite material of (1) a heat-resistant material having no electrically heatable property and (2) the sintered material and/or the metallic material, and a catalyst capable of generating hydrogen from a reactant fluid containing an organic compound or carbon monoxide, by catalysis, which catalyst unit has porosity, thereby enables diffusion of a reactant fluid therethrough, and is electrically heatable.  The above reformer can generate high-purity hydrogen for use in fuel cell of industrial or automotive application, in a short time.
Patent CA-2253987-C (CA)
Inventor: MIZUNO SEIJI
IPC: H01M8/10
Filed: 1998-11-12
Granted: 2003-04-01
Abstract: The method of the present invention enhances the adhesive strength of a polymer electrolyte film via an adhesive and thereby manufactures a fuel cell having the high reliability for the gas sealing property.  The method exposes a joint body, which has been prepared by interposing a polymer electrolyte film between an anode and a cathode and bonding them, to an atmosphere having a temperature of 25°C and a humidity of 50% over one hour (S110).  The method then provides a pair of separators and applies an adhesive on specific areas of the separators,  which are directly joined with the polymer electrolyte film (S120).  The adhesive used here is a modified rubber adhesive that is a mixture of epoxy resin and modified silicone and has a modulus of elasticity of not greater than 10 MPa and a durometer A hardness of not greater than 90 after cure.  The method subsequently lays the pair of separators upon the joint body and cures the adhesive for bonding the separators directly to the polymer electrolyte film (S130 and S140).  The process of step S110 causes the polymer electrolyte film to have a water content ~ of not greater than 4.  This effectively ensures the sufficient adhesive strength of the polymer electrolyte film via the adhesive.
Patent CA-2254288-C (CA)
Title: Method and device for converting heat into work
Inventor: WECLAS MIROSLAW
IPC: F02B23/02
Filed: 1998-11-18
Granted: 2007-04-03
Abstract: The invention relates to a method for converting heat into work, a gaseous fuel being compressed and subsequently burnt and a drive means 2 being moved due to volumetric expansion generated as a result of combustion. In order to allow low-pollutant combustion, there is provision, according to the invention, for the compressed gaseous fuel to be burnt in a porous body 8.
Patent CA-2254290-C (CA)
Title: Pieds ajustables de meubles
Inventor: LAVOIE ROBERT
IPC: A47B9/04
Filed: 1998-11-18
Granted: 2013-01-29
Abstract: Un pied réglable pour meuble permettant aux utilisateurs d'ajuster la hauteur d'un meuble est décrit par la présente. Le pied réglable de la présente invention, utilise un moteur électrique, une vis sans fin et une roue dentée pour transformer le mouvement rotatif de l'arbre du moteur en un mouvement transversal d'un élément d'extension.
Patent CA-2263305-C (CA)
Inventor: EAGAR THOMAS W
IPC: B24D3/06
Filed: 1997-08-27
Granted: 2003-04-29
Abstract: A bond for a metal single layer abrasive tool can be easily chemically and electrochemically stripped from the metal core of a recovered used tool to facilitate reuse of the core. Relative to conventionally bonded tools, the speed of stripping the novel bond is quick, and the stripped core has a smooth, clean surface which needs only minimal mechanical repair prior to reuse. The composition of the novel bond consists essentially of copper, tin  and titanium. It can be brazed at temperatures below diamond graphitization and is chemically compatible with diamond. Hence, the bond is particularly useful for the manufacture of large diameter, superabrasive metal single lay er abrasive wheels employed in the construction industry. The bond can be appli ed to the cutting surface of the abrasive tool as a uniform mixture of bronze alloy, titanium compound and copper powders. The powders may be mixed with a  liquid vehicle and applied as a paste. The method of brazing the bond incorporates heating the bond composition to a temperature at most about 880  ~C to melt the bronze alloy and titanium compound components, and raising th e temperature to at least about 900 ~C to dissolve the copper. The bond can al so include an about 10-200 .mu.m thick barrier layer of copper coating the cutting surface between the core and the bond composition.
Patent CA-2263680-C (CA)
Inventor: KALE LAWRENCE T
IPC: C08L23/08
Filed: 1997-09-03
Granted: 2006-06-27
Abstract: L'invention concerne des joints flexibles formés à partir de mélanges interpolymères d' alpha -oléfine/éthylène contenant une ramification à chaîne longue et possédant une aptitude au traitement perfectionnée ainsi qu'une résistance à basse température et une résistance au maculage et à une attaque par des microbes. De tels joints ne nécessitent pas de mise au point autre qu'un ajout de couleur pour obtenir un produit fonctionnel. Les joints selon la présente invention n'ont pas d'impact négatif sur l'environnement et sont aussi relativement peu coûteux.
Patent CA-2264291-C (CA)
Title: Procede et dispositif de commande et de controle d'une installation de commande de trafic
Inventor: GUTKNECHT ROLAND
IPC: B61L19/06
Filed: 1997-08-19
Granted: 2002-02-12
Abstract: L'invention concerne un procédé de commande et de contrôle d'une intallation de commande du trafic comprenant des actionneurs et éléments de contrôle qui assurent le réglage, par un processus de commande, d'au moins deux voies de circulation pour véhicules guidés. Sur la demande d'un itinéraire, ce processus de commande neutralise tous les actionneurs associés à cet itinéraire vis-à-vis de toute autre demande d'itinéraire et toute autre manipulation et ensuite il assure leur réglage. Toute modification de position ou d'état des actionneurs, relevant du processus de commande, n'est effectuée qu'après vérification de l'autorisation par un processus d'essai qui dépend du processus de commande et selon lequel on vérifie, au cas par cas, si les actionneurs et/ou éléments de contrôle à neutraliser ou à régler pour la préparation ou l'annulation d'un itinéraire sont utilisés pour un itinéraire déjà établi et donc sont déjà neutralisés.
Patent CA-2264561-C (CA)
Inventor: OZ MEHMET C
IPC: A61B17/00
Filed: 1998-06-25
Granted: 2013-04-09
Abstract: L'invention concerne un appareil (16) de réparation d'une valvule cardiaque ayant des valves, qui comprend une pince (16) capable de pincer et d'effectuer la coaptation des valves de la valvule. De préférence, la pince (16) présente des mâchoires (30) qui saisissent et immobilisent les valves. On introduit ensuite une agrafe (32) pour effectuer la coaptation des valves. L'appareil (16) est particulièrement utile pour réparer la valvule mitrale afin de traiter la régurgitation mitrale.
Patent CA-2267619-C (CA)
Title: Procede et appareil pour tester la capacite d'attention visuelle d'un sujet
Inventor: ROENKER DANIEL
IPC: A61B3/024
Filed: 1997-10-09
Granted: 2001-08-21
Abstract: Dans un système d'évaluation de la capacité d'attention visuelle d'un sujet, on présente audit sujet une séquence d'images-écran sur un moniteur d'ordinateur classique (16). Les images-écran incluent une cible fovéale (26) et une cible périphérique (30) et peuvent en outre comprendre des éléments distracteurs (34) autour de la cible périphérique. L'affichage de l'heure pour la présentation est différencié soit par rapport aux réponses du sujet, soit d'une manière préprogrammée. Les réponses sont évaluées pour en vérifier l'exactitude, puis utilisées pour établir une mesure servant à déterminer si le sujet possède une capacité d'attention visuelle correcte.
Patent CA-2273169-C (CA)
Title: Variable length decoder and decoding method
Inventor: WATANABE TOSHIAKI
IPC: H04N19/89
Filed: 1998-10-02
Granted: 2004-06-08
Abstract: Encoded data using variable length code words which can be decoded in two wa ys are first inputted to a forward decoder (123) and decoded forward by the decoder (123). When an error is found in the encoded data during the forward decoding, a reverse decoder (126) starts reverse decoding. A decode value determining unit (125) determines a decodc value by utilizing the results of decoding in both the forward and reverse directions and the positions at which bit errors and syntax errors are found in the encoded data during the forward and reverse decodings.
Patent CA-2273511-C (CA)
Inventor: BOUCHER GAETAN
IPC: E02F9/20
Filed: 1999-06-02
Granted: 2006-03-21
Abstract: An automatic. monitoring and display system for use with a digging machine in order to excavate holes having a predetermined depth and an excavation slope pitch from ground level to hole depth. The machine has a boom, a dipper stick connected to the boom and a bucket at the end of the dipper stick, all interconnected by three pivots.      Only two sensors are used to detect the position of the bucket relative to a zero reference signal which is stored in a processor. The operator of the machine has a console whereby to select an excavation depth as well as a slope pitch angle and the console will display to him the hole depth and the percentage pitch on the slope as the excavation proceeds. The operator can reset his zero reference signal at any time from anywhere.
Patent CA-2273783-C (CA)
Title: Method of imaging the permeability and fluid content structure within sediment
Inventor: YAMAMOTO TOKUO
IPC: G01V1/28
Filed: 1999-06-09
Granted: 2003-06-03
Abstract: A non-destructive method of measuring physical characteristics of a medium, such as uncemented sediment, sandstone, or limestone. A pseudo-random code is generated and is used to generate a pseudo-random acoustic signal. This signal is transmitted into the medium to be measured through the use of a transducer, such as a piezoelectric element, and is received by a plurality of hydrophones. The received signal is then processed to obtain an image of its velocity and attenuation. A  universal geoacoustic model of the medium for a given set of measured data is determined, and the model is solved to obtain a pair of permeability-porosity results for the medium. The one of this pair of permeability-porosity results which is correctly indicative of the physical characteristics of the medium is then determined.
Patent CA-2274773-C (CA)
Title: Agents therapeutiques aqueux a base d'ibuprofene
Inventor: DICKINSON JEFFREY
IPC: A61K9/00
Filed: 1997-12-09
Granted: 2008-08-26
Abstract: L'invention concerne une composition à base d'ibuprofène permettant d'obtenir une préparation aqueuse au pH < 7 lorsqu'on ajoute de l'eau à la composition. Cette composition contient un ou plusieurs médicaments, y compris un médicament à base d'ibuprofène constituant un principe actif à base d'ibuprofène caractérisé par un point de fusion < 100  DEG C, lorsqu'il est combiné avec de l'eau pour donner une préparation aqueuse au pH < 7 et une matière phospholipide mélangée de manière homogène avec le médicament à base d'ibuprofène. La matière phospholipide peut donner une préparation aqueuse sous la forme d'émulsion ou de dispersion comprenant une phase aqueuse sensiblement dépourvue du principe actif ibuprofène et une phase discrète constituée essentiellement de la matière phospholipide considérée et d'un principe actif pharmacologiquement insoluble comprenant le principe actif ibuprofène lorsqu'on ajoute de l'eau à la composition. L'invention concerne aussi des préparations aqueuses buvables (en particulier des émulsions chauffées) obtenues à partir de la composition et un procédé de mise au point de ces préparations aqueuses buvables.
Patent CA-2275515-C (CA)
Inventor: ARNOLD JAMES E
IPC: B23P6/00
Filed: 1997-12-18
Granted: 2003-12-02
Abstract: A method of forming a metal product. The attributes of a final workpiece product are selected (step one). An appropriate substrate composition is determined depending on the selected attributes (step two). A workpiece substrate is formed to near finished dimensions (step three). An appropriate coating material composition is determined depending on the selected attributes (step four). The workpiece substrate is prepared for a high-density coating process (step five). The high-density coating process, such as HVOF thermal spray, is performed to coat the workpiece substrate with the coating material (step six). The coating material is built-up to a thickness effective to obtain desired finished dimensions after performing a hot isostatic pressing treatment. The appropriate hot isostatic pressing treatment parameters are determined (step seven). The hot isostatic pressing treatment is performed on the coated workpiece substrate to obtain a metal product having the desired finished dimensions and diffusion bonding between the coating material and the workpiece substrate (step eight).
Patent CA-2276479-C (CA)
Inventor: OUELLETTE WILLIAM ROBERT
IPC: A61F7/00
Filed: 1997-12-17
Granted: 2004-03-16
Abstract: On décrit des petits coussins chauffants jetables pour le corps comprenant une ou plusieurs pochettes thermiques ayant une structure unifiée constituée d'au moins une couche continue d'une matière semi-rigide qui se ramollit lorsqu'elle est chauffée et d'une pluralité de cellules thermiques individuelles espacées les unes des autres et fixées à l'intérieur de la structure unifiée de la pochette thermique ou sur cette même structure unifiée. Les petits coussins chauffants jetables pour le corps sont destinés à être fixés à un vêtement de l'utilisateur d'un côté et à être retenus directement contre la peau de l'utilisateur de l'autre côté. D'une manière plus spécifique, cette invention concerne des petits coussins chauffants jetables pour le corps qui se conforment bien au corps de l'utilisateur, ce qui garantit une application efficace, pratique et agréable de la chaleur. De manière encore plus spécifique, cette invention concerne des petits coussins chauffants jetables pour le corps destinés à soulager les douleurs menstruelles.
Patent CA-2283020-C (CA)
Inventor: CHENOWETH VAUGHN CHARLES
IPC: C03B5/185
Filed: 1999-09-22
Granted: 2008-03-18
Abstract: A system for melting and delivering glass to a work area such as spinners for making fiberglass includes a melter with heaters so arranged that the "hot spot" in the molten glass is located away from the walls and corrosion sensitive parts so that the various elements of the melter wear out at substantially the same time. The system is further provided with a dual exhaust arrangement when the melter, conditioner and forehearth are located on the same floor of the plant, the first exhaust being at the juncture of the melter and conditioner, and the second being an alternating replacement for one of the heating/cooling orifices and mechanisms in the conditioner, so as to effectively limit the amount of corrosive volatiles reaching the forehearth.
Patent CA-2284429-C (CA)
Title: Thrust reverser sprinkler head
Inventor: RETZLOFF JAMES G
IPC: B05B15/68
Filed: 1999-10-01
Granted: 2008-04-29
Abstract: A fire extinguishing sprinkler nozzle includes a body defining a central channel or bore through which water flows during a fire- The sprinkler nozzle includes a fluid flow thrust reverser disposed over the orifice of the central channel such that water exiting out of the channel impinges the thrust reverser. The direction of water flow is reversed by the thrust reverser. After exiting the thrust reverser, the water impinges the impact surface of deflector disposed around the periphery of the sprinkler body- An upright sprinkler nozzle is thereby provided in which the water has a downward momentum prior to its impinging the impact surface of the deflector that is comparable to a pendent sprinkler head. The sprinkler nozzle is activated by conventional fire detecting or heat sensitive structures.
Patent CA-2284917-C (CA)
Title: Ingredient alimentaire
Inventor: PEARCE ROBERT JOHN
IPC: A23L29/20
Filed: 1997-04-09
Granted: 2007-07-17
Abstract: L'invention concerne un ingrédient alimentaire comprenant un gel à base de protéine, lequel prend à la chaleur, ainsi qu'un polysaccharide hydrocolloïde présent en quantité suffisante pour agir sur la structure et la texture du gel. L'invention concerne également un procédé de préparation de cet ingrédient.
Patent CA-2285078-C (CA)
Inventor: MALM ANDERS
IPC: B23K20/26
Filed: 1998-04-03
Granted: 2008-07-08
Abstract: The invention concerns a friction stir welding method according to which the workpieces (2, 3) to be welded are positioned on a work-table (7) and by means of clamping means (5, 6) clamped to one another and/or to the work-table during the welding. A rotating welding means (12, 13) is arranged to move along a joint between the workpieces while being pressed against said workpieces during the welding. Additional heat is supplied to the joint prior to and/or during the welding operation, in excess of the frictional heat generated in the joint from the rotation of the welding means and of any other heat that may be supplied to the joint in any other manner by the welding means. The invention likewise concerns an apparatus for friction stir welding, comprising a heating element (70) for supply of additional heat to the joint prior to and/or during the welding operation, in excess of the frictional heat generated in the joint from the rotation of the welding means and of any other heat that may be supplied to the joint in any other manner by the welding means.
Patent CA-2295067-C (CA)
Title: A method of producing synthetic rubbers
Inventor: VEZZANI C RRADO
IPC: B29B13/06
Filed: 1998-06-08
Granted: 2006-10-31
Abstract: A method for producing an elastomeric mixture based on the steps of mixing t he additives and/or fillers of the predetermined composition of the mixture to be produced into a solution of at least one elastomer in one or more solvents, removing the solvent from the mixture thus obtained, and granulating the mixture to produce dry granules o f elastomeric mixture.