baber/WOPTO huggingface dataset:
Patent CA-2038846-A1 (CA)
Title: Process for the suppression of current peaks during commutation of a brushless direct-current motor
Inventor: MEYER HELMUT
IPC: H02P6/28
Filed: 1991-03-22
Abstract: With so-called single-current measurement in the direct-current link of a brushless direct-current motor, there is the problem that current peaks occur in the phase windings during commutation, said current peaks not being detected by single-current measurement in the direct-current link.  Consequently, current regulation during commutation is based on an incorrect actual value of the current.            The object of the present invention is to propose a process that, firstly, measures the motor current in low-cost manner by means of single-current measurement in the direct-current link and, secondly, suppresses the current peaks that occur during commutation.            The object of the invention is achieved in that, in the phase windings, the current buildup is delayed by time period tv in relation to the current decay.
Patent CA-2040442-A1 (CA)
Inventor: MISCHENKO NICHOLAS
IPC: H02J7/00
Filed: 1990-08-23
Abstract: A battery charger (10) for charging batteries of varying sizes is disclosed. Batteries to be charged are inserted into a recess (103) in the battery charger housing (101) and are captivated by a lip portion (107) which extends into the recess (103). The lip portion (107) has a plurality of surfaces, one of which surfaces (209) contacts a surface (303) of a battery (301) of one size and maintains the position of the battery (301) against the charging contacts (201) of the battery charger (101). Different size batteries contact different lip surfaces.
Patent CA-2042098-A1 (CA)
Title: Oxidation-resistant ethylene vinyl alcohol polymer compositions
Inventor: SAXTON RONALD L
IPC: C08K5/09
Filed: 1991-05-08
Abstract: TITLE      OXIDATION-RESISTANT ETHYLENE VINYL ALCOHOL            POLYMER COMPOSITIONS                ABSTRACT OF THE DISCLOSURE A composition of a copolymer of ethylene and vinyl alcohol, 0.01 to 0.5 weight percent of a monovalent or divalent metal salt of an aliphatic carboxylic acid having 3 to 9 carbon atoms and 0.5 to 0.5 weight percent of a hindered phenolic antioxidant exhibits improved stability toward oxidative gel formation at elevated temperatures.
Patent CA-2046372-A1 (CA)
Title: Copper-based alloy
Inventor: SUNDBERG MARIANN
IPC: C22C9/00
Filed: 1991-07-05
Abstract: A copper alloy consisting of between 0.01 and 0.05% by weight tellurium and 0.001 and 0.01% by weight phosphorus is made by forming a hot melt of the alloy, casting the melt so that the melt solidifies rapdily at a speed of greater than 1.5 mm per second, with a high cooling rate which is greater than 20°C per second through the whole thickness of the casting.
Patent CA-2047102-A1 (CA)
Title: Sacrificial catalyst for acid treated filter clay
Inventor: STEVENSON DOUGLAS J
IPC: C10M175/02
Filed: 1991-07-15
Abstract: ACID TREATED FILTER CLAY WITH SACRIFICIAL CATALYST USED FOR REFINING USED MOTOR OILS OF THE DETERGENT TYPE          ABSTRACT DISCLOSURE    A sacrificial catalyst - a formulated additive made up of a combination of mineral and metallic salts.  This formula when added to most acid treated filter clays used in the used motor oil refining industry, allows the refiner to modify the acid clay motor oil refining process currently practised, by elimination of the acid treatment phase of the process.  Raw used motor oil of the detergent type may be treated with catalyzed acid treated clay then heated and filtered in the same manner as is practised on oil that has first been treated with sulfuric acid. The resultant recovered oil will be equal to or better than the best oil recovered by the acid clay process.
Patent CA-2048285-A1 (CA)
Inventor: BAXTER LAVARR
IPC: G09F21/02
Filed: 1991-08-01
Abstract: COAT JACKET WITH DECLARATIONS                    OF ALLEGIANCE     Abstract of the Disclosure A coat jacket is described, constructed as having an outwardly facing back portion, across the shoulder and waist sections -- and down the sides -- of which a plurality of adhesively securing fabric strips are attached in forming a frame.          Any of a series of logos, insignias, pictorial representations, etc: are similarly provided with adhesively securing fabric strips along their edges, to mate with the coat jacket frame in presenting a jacket with detachable declarations of individual allegiance.
Patent CA-2048563-A1 (CA)
Title: Method and apparatus for separating pariculate solids
Inventor: GANZ JOHN M
IPC: B03B5/24
Filed: 1991-08-07
Abstract: ABSTRACT         An apparatus for separating particulate solids according to differences in their specific gravities through the use of water generated pulsation cycles, comprising at least one separation cell having a pulse chamber with a means for receiving water and generating a water pulsation, a water chamber for transferring the generated water pulsation, a perforated screen support for supporting particulate solids, and a separation chamber for separating the particulate solids according to differences in their specific gravities, wherein the pulse chamber, the water chamber, and the separation chamber are in fluid communication with one another through the perforations of the perforated screen support; means for feeding the particulate solids to be separated onto the perforated screen support; at least one water holding means extending laterally of and above the pulse chamber, wherein the water holding means stores unused water accumulated from previous pulsation cycles and water supplied at a preset rate from a water supply means to produce a water column possessing a gravitational pressure head; an inflow means connected between the water holding means and the pulse chamber for permitting the inflow of the stored water from the water holding means into the pulse chamber of the separation cell, wherein when the inflow means is in an open position, the water holding means is in fluid communication with the pulse chamber, thereby allowing for the stored water from the water holding means to enter into the pulse chamber to produce a water pulsion in the separation cell whenever the gravitational pressure head of the stored water from the water holding means is sufficient to overcome the resistance of the particulate solids supported on the screen support; an outflow means connected laterally of or below the pulse chamber of the separation cell for permitting the outflow of water from the separation cell, wherein, the outflow means is regulated alternatively to the inflow means to produce water pulsations in the separation cell; and, means for removing the separated solids produced by the water pulsations from the separation cell.
Patent CA-2048887-A1 (CA)
Title: Beta-lactam compounds, and their production and use
Inventor: SUNAGAWA MAKOTO
IPC: C07D477/20
Filed: 1991-08-09
Abstract: ABSTRACT          .beta.-LACTAM COMPOUNDS, AND THEIR PRODUCTION AND USE         A compound of the formula:                           (I) which is useful as an antimicrobial agent.
Patent CA-2049440-A1 (CA)
Title: Pyridinecarboxylic acid amide derivatives and pharmaceutical compositions comprising same
Inventor: MIURA KATSUTOSHI
IPC: C07D213/82
Filed: 1991-08-19
Abstract: Compounds are disclosed of the formula (see formula I) wherein R1 is hydrogen, C1-C3 alkyl or diphenylmethyl; Y is -NH(CH2)n-R2; R2 is OH or -ONO2; m is 2 or 3; and n is 9 to 13 or physiologically acceptable acid addition salts thereof. The compounds of formula (I) are of a blood flow-increasing and hypotensive actions and can be used for the therapy or prevention of diseases in the cardiovascular system.
Patent CA-2050004-A1 (CA)
Inventor: LENORMAND ROLAND
IPC: G01N29/00
Filed: 1991-08-27
Abstract: MESURE DE LA REPARTITION DES CONCENTRATIONS DE CONSTITUANTS D'UN SYSTEME EN CENTRIFUGATION PAR EMISSION/RECEPTION DE SIGNAUX MECANIQUES Invention de Roland LENORMAND, Pierre FORBES, Moricio HOYOS et Françoise DEFLANDRE - L'invention concerne un procédé et un dispositif de mesure de la répartition des concentrations de constituants d'un milieu en centrifugation contenant au moins un fluide. - Selon le procédé, on émet pendant la centrifugation un signal mécanique, de préférence une onde acoustique, à partir d'au moins un point d'émission ¢1922! au contact ou au voisinage immédiat du milieu ¢16!. On reçoit le signal transmis par au moins un point de réception ¢20-22! au contact ou au voisinage immédiat du milieu. On mesure pour chaque couple de point d'émission et de réception au moins une caractéristique de propagation du signal entre le point d'émission et de réception du signal et on détermine par des moyens de traitement appropriés ¢15! la répartition des concentrations des constituants présents dans le milieu. - Une application proposée est le calcul des courbes de pression capillaire et de perméabilités relatives de fluides dans un milieu poreux, en vue notamment d'améliorer l'exploitation des gisements pétroliers. Figure 3A à publier
Patent CA-2052226-A1 (CA)
Title: Adjustable air injectors in furnaces, especially in boiler furnaces
Inventor: BRAIS NORMAND
IPC: F23N3/00
Filed: 1991-09-25
Abstract: ABSTRACT OF THE DISCLOSURE:            A method for optimizing a staged combustion process in a furnace,  preferably a boiler furnace,  having at least one burner, optionally a radiant superheater, and at least one air injector located above the burner but under the radiant superheater whenever present.  The method comprises the steps of injecting air in-to the furnace through the air injector(s) after primary combustion of fuel with air in the burner(s) measuring the amount of unburned fuel, the amount of nitrogen oxides and the super heated steam temperature above the air injector(s)  comparing the measure amounts and temperature with predetermined values corresponding to an optimum NOx reduction; and adjusting the air injection flow rate, velocity and direction through the air injector(s) until  the  measured  amounts  and  temperature  meet  the predetermined values.  A furnace is also disclosed, for use to carry out this method.
Patent CA-2053180-A1 (CA)
Inventor: BIGELOW LOUIS K
IPC: C23C16/01
Filed: 1991-10-10
Abstract: Method and apparatus are disclosed for producing a non-planar synthetic diamond structure of predetermined shape.      A non-planar mandrel surface of the predetermined shape is provided and the mandrel surface is coated with a release substance. Synthetic diamond is deposited on the coating of release substance. The release substance is then activated to effect release of the deposited synthetic diamond structure. In a disclosed embodiment of the method of the invention a dome-shaped hollow mandrel is coated with a metal-containing substance, and synthetic diamond is deposited over the coating using a plasma jet deposition process. The metal-containing substance is then heated to release the resultant diamond structure from the mandrel.      In a form of the disclosed method, the metal-containing substance is a metal alloy which is highly polished before deposition of synthetic diamond thereon. The step of depositing synthetic diamond may include varying the deposition conditions during the depositing of diamond to obtain layers of diamond having different properties. In an embodiment of the apparatus of the invention, means are provided for rotating the mandrel in a deposition chamber, and means are also provided for moving the deposition system in the chamber, such as in an arc over the rotatable mandrel.
Patent CA-2053698-A1 (CA)
Inventor: GOETTSCHE REIMER
IPC: B27K3/50
Filed: 1991-10-18
Abstract: Water-soluble wood preservatives tives which contain mixtures of a metal compound, a metal-fixing acid and a complexing polymeric nitrogen compound, and methods for protecting wood with such mixtures.
Patent CA-2053794-A1 (CA)
Title: Cosmetic composition
Inventor: CRITCHLEY PETER
IPC: A61K8/00
Filed: 1991-10-21
Abstract: ABSTRACT            Novel pseudoceramides are defined, together with their synthesis and compositions comprising them for topical application to human skin, hair and nails
Patent CA-2054564-A1 (CA)
Title: Preventing sticking of stacked food products
Inventor: MONTEMAYOR EZEQUIEL D
IPC: A21C15/00
Filed: 1991-10-30
Abstract: A relatively uniform distribution of discrete, separate particles of edible powder such as starch or flour that adhere to the surface layer of the tortilla is used to prevent sticking of tortillas, one to another, when stacked in a package.  A resilient foam sponge roller is used to first reservoir, and then compressively apply the particles to the surface of the tortilla.
Patent CA-2057267-A1 (CA)
Inventor: RYE GLEN
IPC: H02G3/02
Filed: 1991-12-09
Abstract: A resilient sealing membrane for an electrical outlet box is open with side and bottom walls.  The side walls extend outwardly to be clamped by the cover plate against the drywall or snub over the outlet box edge to be clamped against the edge by the cover plate,  The sealing membrane may be located inside or outside the outlet box and, whether inside or outside, may be a physically separate member or a coating on the outlet box.
Patent CA-2060005-A1 (CA)
Title: Spill-proof lid for beverage cup
Inventor: LAPSKER JOSHUA
IPC: A47G19/22
Filed: 1992-01-24
Abstract: Abstract of the Disclosure A beverage mug with a spill-proof lid having a peripheral wall adapted to engage the rim of the mug and a panel extending across the  lid provided with diametrically spaced-apart openings and a valve on the interior of the lid operated by a lever pivoted on the exterior  of  the  lid  to  open  and  close  fluid communication between the interior of the mug and the openings  in the panel.   The valve  includes  a disc adapted to engage a valve seat on the lid and a spring-urged lever connected to a valve stem for operating the valve to open and close the valve disc against the valve seat.
Patent CA-2060160-A1 (CA)
Inventor: YOUNG CRAIG E
IPC: E21B33/128
Filed: 1992-01-28
Abstract: A method of selectively and variably positioning tubing within the generally horizontal section of a horizontally drilled well. A tubing string having a guide shoe secured to the end thereof is inserted into a portion of the horizontal section of a horizontal well. Smaller diameter tubing is then inserted through the tubing string and past guide shoe into the generally horizontal section. The smaller diameter tubing can be inserted to a point proximate the end of the horizontal section of the well or intermediate between the end and the guide shoe. The subterranean formation surrounding the generally horizontal section may be stimulated or treated by injecting a fluid via the smaller diameter tubing.
Patent CA-2062973-A1 (CA)
Inventor: LABRIE FERNAND
IPC: C07J1/00
Filed: 1990-07-05
Abstract: A combination therapy for the prophylaxis and/or treatment of benign prostatic hyperplasia in susceptible warm-blooded animals which comprises administering a combination of two or more compounds selected from the group consisting of an inhibitor of 5.alpha.-reductase activity, an anti-estrogen, an inhibitor of aromatase activity, an inhibitor of 17.beta.-hydroxysteroid dehydrogenase activity and, in some cases, an anti-androgen and/or an LHRH agonist or antagonist. Pharmaceutical compositions useful for such treatment and pharmaceutical kits containing such compositions are disclosed.
Patent CA-2069349-A1 (CA)
Inventor: LAVO GUY
IPC: A01G13/02
Filed: 1992-05-25
Abstract: L'invention concerne une machine destinée à l'enlèvement de bandes étendues sur le sol, comprenant des moyens rotatifs récepteurs pour enrouler la bande a distance du sol afin de former une bobine, des moyens pour entraîner en rotation les moyens récepteurs précités, un tambour monté tournant sur lequel passe la bande avant d'atteindre les moyens récepteurs précités, ainsi que des moyens de brossage rotatifs disposés de telle sorte que la bande passe entre ces moyens de brossage et le tambour et est appliquée sur le tambour, et des moyens d'entraînement en rotation de ces moyens de brossage. La machine selon l'invention est destinée notamment au domaine de l'agriculture.
Patent CA-2069455-A1 (CA)
Title: Azole derivatives
Inventor: CAULKETT PETER W R
IPC: C07D487/04
Filed: 1992-05-22
Abstract: A B S T R A C T                           AZOLE DERIVATIVES    A compound of the formula I       wherein: R1 is hydrogen, (1-6C)alkyl, or (1-4C)alkanoyl; R  is phenyl, a C-linked aromatic 5- or 6-membered heterocylic ring containing one of oxygen and sulphur and/or one or two nitrogen, or (1-8C)alkyl, alkenyl or alkynyl unsubstituted or substituted by a phenyl or a C-linked aromatic 5- or 6-membered heterocylic ring containing one of oxygen and sulphur and/or one or two nitrogen, any phenyl being unsubstituted or substituted by one, two or three of (1-4C)alkyl, (1-4C)alkoxy, halogen, trifluoromethyl, hydroxy, benzyloxy and (1-5C)alkanoyloxy; A is N or CT in which T is hydrogen or (1-4C)alkyl; or a pharmaceutically acceptable salt thereof, processes for the manufacture of the compounds, and pharmaceutical compositions containing them.  The compounds are useful as adenosine antagonists.
Patent CA-2070518-A1 (CA)
Title: Combustor dome assembly
Inventor: ABLETT ADRIAN M
IPC: F23R3/10
Filed: 1992-06-04
Abstract: A combustor dome assembly includes an annular support plate fixedly joined to a combustion liner which confines combustion gases. The support plate includes a plurality of circumterentially spaced support openings for supporting respective carburetors, and respective splashplates fixedly joined coaxially to each of the support openings. Each of the sptashplates includes an intermediate flared portion spaced axially downstream from an intermediate portion of the support plate to define a plenum, and a distal end spaced radially away from the liner to define a circumferential extending outlet gap in flow communication with the plenum. The support plate intermediate portion has a plurality of impingement hoses disposed between the support openings and a proximal end of the support plate for channeling a first portion of compressed air as impingement air into the plenum to impinge against the splashplate Intermediate portion. A plurality of circumferentially spaced air slots are disposed between the support plate proximal end and the liner for channeling a second portion of the compressed air therethrough and into the plenum for mixing with spent impingement air to form a cooling air film extending from the outlet gap along the liner for film cooling thereof.
Patent CA-2072582-A1 (CA)
Inventor: WALCZAK THOMAS J
IPC: H04B1/40
Filed: 1991-12-18
Abstract: A TDMA cellular telephone (600) includes, in its transmit signal path, microphone (608), vocoder (612), data format circui-try (601), quadrature modulator (602), 90 MHz local oscillator (606), transmitter with mixer (604), transmitter filter (618), and an-tenna (620). In its receive signal path, the TDMA cellular telephone (600) includes receiver filter (622) coupled to antenna (620), quadrature demodulator (624), and data deformat circuitry (625). The channel frequency of TDMA cellular telephone (600) is loaded into synthesizer (616) by microcomputer (614) and applied to transmitter (604) and demodulator (624). TDMA cellular telephone (600) is controlled by microcomputer (614) which includes a memory with a control and signaling computer program stored therein. Transmitter (604) includes novel power control circuitry (100) comprised of variable gain stage (104), mixer (106), bandpass filter (109), and directional coupler (112) in a forward path, and detector (116), A/D converter (118), digital controller (120), and D/A converter (126) in a feedback path.
Patent CA-2073339-A1 (CA)
Title: Paddle game using suction cup projectile
Inventor: KURLAND JEFFREY I
IPC: A63B59/00
Filed: 1991-07-26
Abstract: A recreational game for two or more participants is disclosed which employs an aerodynamically designed, multi-winged airfoil projectile, together with at least one hand-held shield (50). The shield (50) has a front face (52) with a generally flat projectile receiving surface (52), a rear generally convex face (51) generally configured to be supported by the natural form of a user's generally relaxed hand, and shock-absorbing chamber-defining means (53) between the two faces to effectively cushion the user's hand against impact of the projectile. The shield includes a strap (54) spaced from the back face by a hand-accommodating distance whereby a participant's hand is removably retained in the space by the pressure exerted against the hand by the disk and strap. The projectile is thrown by one participant, and captured on the shield by a second participant via a suction device on the projectile.
Patent CA-2073356-A1 (CA)
Title: Heart centered square timber production mechanism and method
Inventor: RANDLE HALE
IPC: B27B31/00
Filed: 1992-07-07
Abstract: ABSTRACT OF THE DISCLOSURE   A mechanism and method for the efficient production of heart wood centered small dimen-sioned, square timber comprising log feed system for the storage and dispensing of individual logs to the production facility; a log centering system whereby the log is centrally aligned with multiple saw blades and clamped into position; a log transport system consisting of a movable carriage which transports the clamped log through the blades; and a separation system whereby the finished timber is separated from the side cuts and positioned ready for easy stacking. The log is first cut longitudinally and perpendicularly along two sides. A rotating means located within the centering system turns the log onto one of its two sawn sides and the log is again passed through the blades and cut longitudinally and perpendicularly, thus forming a timber with a square cross section and the heart wood centered therein.
Patent CA-2073632-A1 (CA)
Title: Bottle neck cover
Inventor: ROBINSON JAMES E
IPC: B67D3/00
Filed: 1992-07-10
Abstract: ABSTRACT OF THE DISCLOSURE            A  protective  cover  is  provided which  fits  over the neck of a water bottle before it is inserted in a water cooler to protect the drinking water from contamination by the outer surface of the neck of the bottle which is commonly exposed to dirt and handling.
Patent CA-2078870-A1 (CA)
Title: Electromagnetic actuator
Inventor: STUART KEITH O
IPC: B60G17/015
Filed: 1991-03-22
Abstract: An improved electromagnetic actuator of the type comprising (a) a first assembly; (b) a second assembly movable relative to the first assembly along an axis of relative movement in response to a command signal, the second assembly comprising magnetic flux source means for defining radially directed flux both in an inward and outward direction relative to the axis of relative movement; (c) coil assembly means for defining at least two coil segments respectively disposed in the paths of the flux in the inward and outward directions; and (d) means for applying the command signal to the coil segments so that a current flows in one direction around the axis through the inward directed flux, and flows in the opposite direction around the axis through the outward directed flux so that the flux/current force applied between the first and second assemblies is additive. In accordance with one aspect of the invention flat magnets and flux focussing elements are used to provide the radially directed flux. In accordance with another aspect the coil sections are wound onto a core element to provide an attached coil design. Finally, a brushless actuator design is disclosed.
Patent CA-2081383-A1 (CA)
Title: Snap-on legs
Inventor: LARSON ROY M
IPC: E01F9/60
Filed: 1992-10-28
Abstract: ABSTRACT A snap-on leg assembly for a barrier or fence consists of two elongate legs arranged side by side with a fulcrum between them. A resilient retainer engages the legs above the fulcrum and biases them towards one another so that opposed clamping faces of the two legs near the upper ends are in engagement. The leg assembly can be engaged with a barrier rail by forcing the rail between the upper ends of the legs to be retained in place by the resilient force of the retainer.  The leg can likewise be attached to a vertical post and used to support a vertical panel between the lower ends of the legs.