baber/WOPTO huggingface dataset:
Patent CA-2248293-A1 (CA)
Inventor: RIDLEY RODNEY K
IPC: E21B43/12
Filed: 1998-09-22
Abstract: The invention is an apparatus for moving reservoir fluids from an underground reservoir using a wellbore extending from the surface to an end beneath the surface, wherein the wellbore communicates with the reservoir such that reservoir fluids enter the wellbore and separate into a liquid phase and a gas phase at a gas pressure. The apparatus includes a first pump, for containing within the wellbore in communication with the liquid, for pumping the liquid phase. The apparatus further includes a pump drive, for containing within the wellbore, operably connected to the first pump for driving the first pump. The pump drive is powered using the gas pressure of the gas phase in the wellbore.  An intake communicates with the gas phase in the wellbore and directs the gas phase to the pump drive in order to power the pump drive, while an exhaust directs the gas phase from the pump drive. Further, the invention is a method for moving reservoir fluids from an underground reservoir using a wellbore. The method includes the steps of intaking the gas phase from the wellbore into the pump drive, powering the pump drive using the gas pressure of the gas phase in the wellbore, pumping the liquid phase from the wellbore by the first pump and exhausting the gas phase from the pump drive.
Patent CA-2250603-A1 (CA)
Title: Treating urinary and other body strictures
Inventor: EDWARDS STUART D
IPC: A61F2/94
Filed: 1998-10-16
Abstract: A method and system for treatment of body strictures restores luminal diameter to normal range. The stricture is dilated, stretching its lumen to a desired diameter, collagen is exuded near existing tissue of the stricture and absorbed or adhered to the tissue, making a collagen-enhanced tissue stricture. Energy is emitted to ablate or harden the collagen-enhanced tissue. Treatment may be repeated, creating a hollow, cylindrical supported frame of layers of hardened collagen. Pressure from exuded collagen or from one or more expansion balloons dilates the stricture. The stricture is isolated by balloons at either or both ends of the stricture, isolating the stricture and confining the collagen. Collagen adheres to a stent, preferably tack-welded onto the stricture, which supports the stricture until the stent is absorbed into that tissue.
Patent CA-2252971-A1 (CA)
Inventor: MCGONIGLE BRIAN
IPC: C07K14/415
Filed: 1998-11-30
Abstract: This invention relates to the isolation of nucleic acid fragments from soybean that encode ADP ribosylation factor (ARF) protein. This invention also relates to nucleic acid fragments encoding proteins that are capable of conferring herbicide tolerance to chlorimuron-ethyl, a sulfonylurea herbicide. The invention encompasses genetic screens for crop protection chemicals, transgenic plants, and breeding methods.
Patent CA-2255015-A1 (CA)
Inventor: COULBORN JOHN W
IPC: B61F1/00
Filed: 1998-12-04
Abstract: A railway car underframe is provided for mounting a composite  box  structure  thereon  to  form  an  insulated railway boxcar.  The composite box structure includes side walls, end walls and a floor molded as an integral unit with  fiber  reinforced  plastic  interior  and  exterior surfaces.   The composite box structure includes a first fiber  reinforced  composite  unit  and  a second  fiber reinforced  composite unit.   The  first  fiber reinforce composite unit provides the end walls, side walls and floor for the railway boxcar.  The second fiber reinforce unit may be permanently attached to the side walls and end walls to  provide  a  roof  for  the  boxcar.    The  railway  car underframe has a center sill, side sills and end sills with a generally rectangular configuration and coplanar surfaces for adhesively bonding the composite box structure with the railway car underframe.   Mechanical fasteners are also provided to couple the composite box structure with the railway car underframe.
Patent CA-2258043-A1 (CA)
Title: Bouchon avec clapet pour recipient
Inventor: BOUZAGLO GABRIEL
IPC: B65D47/26
Filed: 1997-06-11
Abstract: Ce bouchon comporte une partie cylindrique (1a) destinée à être engagée dans le goulot (2a) d'un récipient (2) et présentant une gorge (3) qui s'étend circonférentiellement sur au moins une partie de la circonférence de la partie cylindrique (1a). Deux canaux (4 et 5), séparés l'un de l'autre, s'étendent dans la partie cylindrique (1a) du bouchon et débouchent dans la gorge (3) respectivement par des orifices (4a et 5a) espacés l'un de l'autre dans le sens circonférentiel de la gorge (3). Une membrane (6) en matière élastomère épouse étroitement la partie cylindrique (1a) et la surface de la gorge (3) en recouvrant les orifices (4a et 5a) des deux canaux (4 et 5). La membrane (6) forme un clapet qui, par sa déformation élastique, autorise un écoulement d'une substance fluide contenue dans le récipient (2) aussi bien de l'intérieur vers l'extérieur du récipient, que de l'extérieur vers l'intérieur dudit récipient.
Patent CA-2258980-A1 (CA)
Title: Base structure for roller skates
Inventor: CHANG CHUN-CHENG
IPC: A63C17/20
Filed: 1999-01-27
Abstract: A base structure for a roller skate includes a base having at least two compartments, a bottom plate secured to the base, and a number of wheel assemblies each of which is mounted in an associated compartment. The bottom plate includes a number of blocks formed on the underside thereof, each block being received in an associated compartment. Each wheel assembly includes a pivotal seat having a first end secured to the underside of the bottom plate, a wheel seat having a first end pivotally connected to a second end of the pivotal seat, and a wheel rotatably mounted to a second end of the wheel seat. Each wheel seat may be pivoted to a storage position in the associated compartment when not in use. When skating is required, each wheel seat is pivoted to an operative position, in which each wheel seat bears against an underside of an associated block while the wheel rotatably attached to each wheel seat extends beyond the base for skating.
Patent CA-2259731-A1 (CA)
Inventor: ROBINSON ROSS G
IPC: B21D7/16
Filed: 1999-01-20
Abstract: A boost bend method of making tight radius bends in boiler tubes, such as bends having a radius of lxD or less, in which a selected portion of the intrados of the tube is heated in a controlled manner thereby reducing the necessary tube wall thickness relative to the diameter of the tube for 180° bends.  Tubes bent using the method may have wall thicknesses of about 6.6% of the tube diameter and suffer less than about 7% thinning of the extrados tube wall.
Patent CA-2261081-A1 (CA)
Inventor: BARCHUK VLADYMIR
IPC: G01R27/26
Filed: 1999-02-01
Abstract: A capacitor sensor for assessing dielectric properties of currency paper uses a transmitting dielectrode on a first side of an evaluation channel and a receiving electrode on the same first side of the evaluation channel. A passive electrode is located on the opposite side of the evaluation channel and overlays with the transmitting and receiving electrodes. An electronic processing arrangement is connected to the transmitting and receiving electrodes and evaluates the signals for changes in the capacitance coupling of the electrode. This coupling is directly related to the properties of the paper passing between the passive electrode on one side and then transmitting and receiving electrodes on the other side.
Patent CA-2267284-A1 (CA)
Title: An engine
Inventor: GALVIN GEORGE FREDERIC
IPC: F02B75/38
Filed: 1997-09-26
Abstract: An engine comprises a cylinder (1), a combustion' chamber, a piston (2) reciprocable within the cylinder, a connecting rod (3) and a rotatable output shaft (4). The piston (2) is in drivable connection with the output shaft (4) via the connecting rod (3), a drive ring (5) and a torque lobe (6).    The torque lobe (6) is a circular plate eccentrically mounted on the output shaft (4) for rotation therewith about the axis thereof. The drive ring (5) is an annular sleeve which is rotatable sliding fit around the rim of the torque lobe (6). The connecting rod (3) is slidably mounted with respect to a carrier (3a) fixed to the drive ring (3) for axial movement relative thereto. One end of the connecting rod (3) is pivotally fixed to the piston (2), the other end of the connecting rod being engageable with a cam (8) fixed to the torque lobe (6) whereby rectilinear movement of the piston is converted to rotary movement of the torque lobe or vice versa. The cam (8) and the mounting of the connecting rod (3) with respect to its carrier (3a) are such that the turning moment of the output shaft (4) is maximised substantially at the same time as the pressure of expanding gases resulting from ignition within the combustion chamber is maximised.
Patent CA-2268033-A1 (CA)
Title: Helicobacter pylori live vaccine
Inventor: ZHENGXIN YAN
IPC: G01N33/569
Filed: 1997-09-01
Abstract: The present invention relates to novel recombinant live vaccines, which provide protective immunity against an infection by Helicobacter pylori and a method of screening H. pylori antigens for optimized vaccines.
Patent CA-2269454-A1 (CA)
Inventor: ABRIGO LUCIANO
IPC: C08F4/24
Filed: 1999-04-19
Abstract: Compositions for the polymer curing, comprising:      A) one or more organic peroxides and B) trans-stylbene
Patent CA-2271314-A1 (CA)
Title: Interlock for electrical switching apparatus with stored energy closing
Inventor: WEHRLI HANK ANTHONY III
IPC: H01H9/24
Filed: 1999-05-07
Abstract: Electrical switching apparatus such as a power circuit breaker, network protector or switch has a self-supporting operating mechanism module including a cage formed by a pair of side plates rigidly clamped in spaced relation by spacers. The cage supports all of the operating mechanism components including a helical compression close spring mounted fully between the side plates and coupled to a cam member through a rocker in a manner which maintains the forces longitudinal to the spring. The cam member has a charging cam with a charge profile for compressing the close spring and a close profile through which the spring drives the cam member to effect a controlled release of stored energy to close the contacts of the apparatus. A close prop, spring biased to an unlatched position, is latched to secure the close spring in the charged state by a latch assembly reset by a reset lever separate from the close prop which in turn is reset by rotation of the cam member during charging. An interlock prevents release of the close spring when the contacts are closed or the trip release is actuated. An indicator actuated by a driver pivoted against the cam shaft snaps from a DISCHARGED to a CHARGED indication as the close spring becomes fully charged and the driver drops into a notch created by a flat on the cam shaft. Rotating shafts are journalled solely in confronting apertures in the side plates. The cam shaft is captured between bushings seated in non-circular openings in the side plates thereby eliminating the need for any fasteners. Likewise, other parts mounted between the side plates and joined by pins having enlarged heads retained by the side plates do not need retainers. Various shafts extending between the side plates have reduced diameter ends of progressive lengths for successive insertion in one side plate to aid in assembly of the operating mechanism.
Patent CA-2271317-A1 (CA)
Title: Spray applicator for roofing and other surfaces
Inventor: HUNTER JOHN P JR
IPC: E04D7/00
Filed: 1997-11-14
Abstract: A method and an industrial vehicle (1) for uniformly applying coatings at appropriate thickness and pitch upon a surface wherein a nozzle holder assembly (34) moves between two parallel tracks or rails (24, 25) to dispense foam. The uniform application of foam at each pass is assured by accelerating the speed of the nozzle holder assembly at the end of each pass by providing respective curved, uphill distal ends of the tracks so that the nozzle holder assembly moves up the curved distal ends and returns quickly while changing speed and direction at the end of each pass.
Patent CA-2272782-A1 (CA)
Title: Electrolytic-solution-supporting polymer film and secondary battery
Inventor: DAIDO TAKAHIRO
IPC: H01M50/497
Filed: 1999-05-20
Abstract: A high-strength, heat-resistant and high-safety electrolytic-solution-supporting polymer film which can be applied to secondary batteries typified by lithium and lithium ion secondary batteries-and which has an ionic conductivity of at least 5 × 10 -4 S/cm at 25°C, a puncture strength of at least 300 g and a mechanical heat resistance of at least 300°C.
Patent CA-2274210-A1 (CA)
Title: Code generation for a bytecode compiler
Inventor: SHAYLOR NICHOLAS
IPC: G06F9/45
Filed: 1999-06-11
Abstract: A method, system and apparatus for generating and optimizing native code in a runtime compiler from a group of bytecodes presented to the compiler. The compiler accesses information that indicates a likelihood that a class will be a particular type when accessed by the running program. Using the accessed information, the compiler selects a code generation method from a plurality of code generation methods. A code generator generates optimized native code according to the selected code generation method and stores the optimized native code in a code cache for reuse.
Patent CA-2275665-A1 (CA)
Inventor: DURBIN PHILIPPE
IPC: C07D333/34
Filed: 1997-12-12
Abstract: La présente invention concerne de nouveaux composés répondant à la formule générale (1) dans laquelle: P, T1, T2, X et n sont tels que définis à la revendication 1, leurs formes tautomères, et leurs sels d'addition avec des bases pharmaceutiquement acceptables. L'invention concerne aussi des procédés de préparation de ces composés ainsi que les applications de ces composés comme médicaments. Ces composés inhibent l'enzyme aldose réductase et peuvent être utilisés dans le traitement ou la prévention des complications diabétiques neurologiques périphériques et autonomes, rénales et oculaires telles que la cataracte et la rétinopathie.
Patent CA-2279044-A1 (CA)
Title: Credit card system
Inventor: DICIANO JUSTIN
IPC: G06Q30/02
Filed: 1999-07-29
Abstract: A credit card system is one in which cash rewards are assigned to the different credit card owners using the system. These cash rewards are transferred to investments on behalf of the credit card owners who can later sell off the investments for funds to be put to any desired use.
Patent CA-2279382-A1 (CA)
Title: Web request broker controlling multiple processes
Inventor: ADUNUTHULA SESHU
IPC: G06F21/00
Filed: 1998-01-29
Abstract: A web server configured to respond to client requests over a network such as the World Wide Web includes a web listener having a Hypertext Transfer Protocol (HTTP) daemon, a plurality of extension programs configured to perform respective operations, and a web request broker configured to identify one of the programs for responding to a client request, and determine the availability of an instance of the identified program. The web request broker maintains control of multiple instances of each server extension program to provide enhanced server operation without overwhelming server resources. The web request broker maintains a minimum number of instances of the identified program in memory, each executed in its own address space. The web request broker determines whether an available instance of the identified program is available from an existing number of instances, and selectively initiates a new instance of the program if no other instance is available. If no instance is available and the existing number of instances exceeds the maximum prescribed number, then the web request broker returns the reply to the web listener to send a reply over the network that the request was not processed.
Patent CA-2279540-A1 (CA)
Title: Brushless dc motor control
Inventor: BOYD JOHN H
IPC: H02P6/18
Filed: 1998-02-05
Abstract: An electronically commutated brushless DC motor primarily for fractional horsepower applications of the type where at any instant one motor winding is unpowered and used to detect back EMF zero-crossings which information is used to initiate winding commutations. The duration of the pulse produced in this winding due to dissipation of stored energy by free-wheel diodes in parallel with the commutation devices after supply of current has been removed from this winding is used to provide a measure of motor current. This allows for simplified commutation device current limiting circuits and is available for control purposes which are a function of motor torque. There is also disclosed a method for maximising useful power output by reducing the phase angle between the motor current and the back EMF. This is accomplished by introducing a delay in commutating the motor windings beyond the occurrence of each back EMF zero-crossing, with the delay being a function of the time between commutations.
Patent CA-2280386-A1 (CA)
Inventor: BOSNAR MIRO
IPC: G01V3/165
Filed: 1999-08-16
Abstract: An electromagnetic geophysical mapping instrument comprising a transmitter and a transmitter coil connected to the transmitter, the transmitter generating intermittent current pulse waveforms formed by half-sinusoidal output waveform segments of a waveform having a frequency equal to a resonant frequency of the transmitter coil, and a receiver, in which the transmitter generates current pulses including pulses comprising a plurality of immediately successive half- sinusoidal waveforms of common polarity. In a time domain instrument, the pulses will typically comprise spaced bursts of immediately successive half-sinusoidal waveforms of the same polarity, whereas in a frequency domain instrument, the pulses will immediately succeed each other and be of alternating polarity. The pulse lengths may in this case be equal, or vary in a manner providing a desired output spectrum, for example according to a pseudo-random sequence.
Patent CA-2280463-A1 (CA)
Inventor: BROOKS THOMAS N JR
IPC: B60G9/02
Filed: 1999-08-19
Abstract: A four-link machine axle suspension system having a bottom pair of links positioned below the axle and a top pair positioned above the axle for connecting the axle to the machine chassis. In one The bottom pair of links may be oriented in a non-horizontal plane. Additionally, the bottom pair of links may be splayed inwardly and the top pair of links may be splayed outwardly with respect to the chassis central longitudinal axis. Finally, the links may be connected to the chassis and the axle by spherical bearings to permit rotational and angular motion.
Patent CA-2283030-A1 (CA)
Title: Scraper
Inventor: MITCHELL DAVID
IPC: B60S3/04
Filed: 1999-09-22
Abstract: A hand-held scraper having a handle section and a relatively short scraping section carried by the handle section. The scraping section has a forwardly directed scraping edge. A hand grip is carried by the handle section and extends upwardly from the top surface of the handle section.      The scraper has a forearm support section which extends rearwardly from the base section in a position to rest solely against the bottom of a person's forearm when the person grips the hand grip of the scraper to operate the scraper.
Patent CA-2283064-A1 (CA)
Title: Apparatus and method of myocardial revascularization using ultrasonic pulse-echo distance ranging
Inventor: KESTEN RANDY J
IPC: A61B18/24
Filed: 1998-03-06
Abstract: An apparatus and method of intraoperative myocardial revascularization of the myocardium of the heart of a patient. A catheter apparatus comprising an elongated catheter, an elongated laser wave guide slidably disposed within a lumen of the catheter, and an ultrasonic transducer secured to the distal end of the elongated laser wave guide, is inserted into the patient. The distal end of the leasing apparatus is guided to the portion of the patient's heart wall in which channels will be formed, and the ultrasonic transducer is activated to create brief pulses of ultrasonic energy. The transducer receives a returned ultrasonic echo from the heart wall. The ultrasonic echo is processed by signal processing elements. The processed ultrasonic echoes are displayed to show the distance between the epicardial and endocardial surfaces of the portion of the heart wall in which the revascularization energy is to be discharged, and the distance between the operative distal end of the myocardial revascularization device and such endocardial and epicardial surfaces. After distance measurements have been performed, channels are formed in the heart wall.
Patent CA-2283209-A1 (CA)
Title: Device for detecting the position of a moveable magnet for generating a magnetic field
Inventor: SCHNEIDER THOMAS
IPC: G01D5/12
Filed: 1998-03-12
Abstract: The invention relates to a device for detecting the position of a magnet which is positioned so that it is moveable (3, 23, 24) to produce a magnetic field (6) through a ferromagnetic wall (1, 29), a magnetic field sensor (10, 21, 21') being situated in front of said wall.     When said magnet (3. 23, 24) is moved in relation to said wall (1), the lines (6) of the field build up a useful flux (6) which progresses in said wall (1, 29). Said useful flux has magnetic remanence (7) which is retained after the magnet (3, 23, 24) has passed by, is aligned along the movement axis of the magnet (3, 23, 24) in accordance with the polarity, and builds up a fringing flux (12) to the front side of the wall (1.29) where the magnetic field sensor (10, 21, 21') is positioned. Outside of said wall, the fringing flux (12) is opposed and is aligned with the useful flux (6). The magnetic field sensor is a magnetic field sensor element (10, 21, 21') located at a short distance from the wall (1, 29) and detects the field direction of the fringing flux (12); when the magnet (3, 23, 24) passes by, the fringing flux is superposed by the field (6) of the magnet (3. 23. 24). The magnetic field sensor (10, 21. 21') registers the change of field, which is then used to produce a switching signal.
Patent CA-2284201-A1 (CA)
Title: Lift motor
Inventor: THIEN GERHARD
IPC: F03B17/04
Filed: 1999-01-20
Abstract: The invention relates to a device for producing torque, comprising at least two bodies (12) which are coupled to each other in such a way that they perform a rotational movement, whereby one (12) of the bodies moves in the direction of gravity and the other body moves in the opposite direction. Each body (12) changes its volume when the direction of movement is changed. The volume of the body (12) which moves in the direction of gravity is smaller than the body (12) moving in the opposite direction.
Patent CA-2287924-A1 (CA)
Inventor: PAMIDI CHENCHAIAH CHINNA
IPC: C07J73/00
Filed: 1998-05-06
Abstract: L'invention concerne de nouveaux 4-azastéroïdes, qui comportent des groupes fonctionnels au niveau d'une ou de plusieurs positions 7, 11 et 15, tels que des groupes hydroxy ou dérivés d'hydroxy. Ces composés sont actifs contre la 5-.alpha.-réductase, ce qui indique qu'ils peuvent être utiles pour lutter contre le cancer de la prostate. Ils peuvent être préparés par synthèse chimio-enzymatique à partir de 4-azastéroïdes faciles à se procurer.
Patent CA-2291174-A1 (CA)
Title: Multi-switch device for controlling vehicle subsystems
Inventor: HARTMAN HOLLISTER A
IPC: H04B1/38
Filed: 1998-08-03
Abstract: A multi-switch control device is useful for controlling a variety of functions on a variety of vehicle subsystems or peripheral devices. The control device includes a specifically contoured base portion that enhances the usability of the device without distracting the vehicle operator from the task of driving. In one embodiment, a plurality of grooves are provided for receiving the fingers of the user of the device and a switch is provided within each groove that is readily usable by an individual regardless of the specific size of their fingers. Another embodiment includes a plurality of raised beads or grooves that provide a tactile indication of the position of the user's fingers on the device. The contoured portions also provide the ability of the user to make adjustments to a selected vehicle subsystem through conventional "touch-pad" technology.