baber/WOPTO huggingface dataset:
Patent CA-2203446-A1 (CA)
Inventor: BREWER JAMES ROBERT
IPC: E21B47/04
Filed: 1997-04-23
Abstract: The artificial lift control system utilizes a piggy back line, flow computer, pressure transmitter, and software control to control artificial lift of wellbore fluids. The piggy back line is a medium to high pressure line strapped to the outside of the tubing. Supply, make-up gas or other fluids are pumped down the piggy back line at the lowest flow rate possible. Extremely low flow rates are utilized to minimize friction of flow in the piggy back line. A pressure or differential pressure transmitter is installed to monitor pressure on the piggy back line or to measure the differential pressure between the piggy back line and the casing pressure. The flow computer monitors pressures or differential pressures, utilizes software instruction sets to calculate fluid levels in the casing tubing annulus, and cycles artificial lift on and off based on parameters set in the flow computer software.
Patent CA-2206950-A1 (CA)
Title: Disjoncteur a haute tension avec insertion de resistance a la fermeture.
Inventor: PERRET MICHEL
IPC: H01H33/16
Filed: 1997-05-12
Abstract: Disjoncteur  à  haute  tension  avec   insertion  de résistance (3) à la fermeture, caractérisé en ce que la résistance (3) est insérée au moyen d'une électrode d'insertion fixe (13) coopérant avec l'extrémité du contact principal mobile (16), la buse de  soufflage (22) et le contact  d'arc (30-30A) de l'ensemble mobile étant solidarisés entre eux et ce sous-ensemble étant rendu mobile par rapport à l'ensemble mobile, de telle sorte qu'au déclenchement, grâce à l'inertie dudit sous-ensemble, les contacts d'arc se séparent après un éloignement suffisant entre l'électrode d'insertion et l'extrémité du contact principal mobile (16).
Patent CA-2207808-A1 (CA)
Inventor: SHAFER JAN C
IPC: B64D15/04
Filed: 1997-06-17
Abstract: Disclosed is a dust assembly for conducting compressed air from a fixed component to a component that is movable with respect to the fixed component. The duct assembly contains at least two telescoping, tubular conduit sections with seals between adjacent sections. An upstream transitional joint rotatably interconnects the outmost conduit section with an air supply means, while a downstream transitional joint rotatably interconnects the innermost conduit section with an air delivery means. A tubular double-wall spaced apart from the inner surface of the innermost conduit section forms an annular airspace between the tubular double-wall and the innermost conduit section. A second double-wall forms a second annular airspace between its downstream end and the upstream transitional joint. The annular airspace created by the double-walls protect the seals.
Patent CA-2207888-A1 (CA)
Inventor: KULP CHRISTOPHER L
IPC: D21H17/29
Filed: 1997-06-03
Abstract: The method of making paper wherein the use of a selected ether or ester modified, cationic starch as an additive in the papermaking wet end provides significantly improves retention and drainage properties particularly in alkaline microparticle containing systems.
Patent CA-2209058-A1 (CA)
Title: Index drive
IPC: F16H27/02
Filed: 1997-06-27
Abstract: In the indexing mechanism, for producing rotary indexing of a primary sprocket or pulley, a locking bracket is operable to alternately lock or unlock the primary sprocket or pulley. At the same time, the locking bracket alternately unlocks or locks an endless chain or synchronous belt at a locking location. The chain or synchronous belt passes around the primary sprocket or pulley and past the chain or synchronous belt locking location. The chain or synchronous belt has first and second loops between the primary sprocket or pulley and the chain or synchronous belt locking location, on opposite sides thereof. First and second secondary sprockets or pulleys are mounted on the ends of first and second cylinder rods respectively, each secondary sprocket having one of the loops passing over it. The locking bracket is moved between two positions, to lock either the sprocket or pulley, or the chain or synchronous belt at the locking location. The first and second cylinders are counter-actuated to increase the length of chain or synchronous belt in one loop while decreasing the length of chain or synchronous belt in the other loop by the same amount, so as to pull the chain or synchronous belt to rotate the primary sprocket or pulley while the chain or synchronous belt is locked at its locking location, and so as to return to a starting position when the sprocket or pulley is locked.
Patent CA-2210403-A1 (CA)
Title: Single-ion conducting solid polymer electrolytes
Inventor: VENTURA SUSANNA C
IPC: H01M10/0565
Filed: 1996-01-04
Abstract: Novel single-ion conducting polymer electrolytes (SPEs) are provided. A first group of polymers are polysiloxanes substituted with fluorinated poly(alkylene oxide) side chains having associated ionic species, while a second group are copolymers containing mer units having structures (II) and (III), in which R4 through R8, x2, x3, y2, y3, z2 and z3 are as defined herein. Also provided are conductive, composition containing these novel polymers, particularly film composition, and batteries formulated with such films.
Patent CA-2210981-A1 (CA)
Inventor: KISS GUNTER H
IPC: B01D53/75
Filed: 1997-07-21
Abstract: A multi-washer and a method of cleaning synthesis gases from the gasification of wastes is disclosed.  The apparatus  provides  a  horizontal  container  divided  by partition bulk heads into several wash chambers.   The chambers are provided with a sumpless outflow to a pump system.    Each  of  the  chambers  includes  a  substance exchanger  in  an  oblique  position,  the  exchanger  for spraying varying  quantities  of wash  liquid  and  which penetrates into the substance exchangers.  The apparatus is self-cleaning in view of the wash liquid spraying the container walls.  The washer apparatus and method greatly overcome the limitations of the prior art by providing a more effective arrangement and method of operating the arrangement.
Patent CA-2212040-A1 (CA)
Title: Process for producing difluoromethane and difluorochloromethane
Inventor: TSUDA TAKEHIDE
IPC: C07C17/20
Filed: 1996-02-08
Abstract: The present invention is directed to a process for producing difluoromethane and difluorochloromethane. The process comprises fluorinating dichloromethane and trichloromethane with hydrogen fluoride in a liquid phase in the presence of a catalyst in one reaction apparatus under the conditions that a reaction pressure is from 1 to 20 kg/cm2 and a reaction temperature is from 50°C to 150°C. With this process the difluoromethane and difluorochloromethane can be simultaneously or alternatively produced in an economical/safe manner in one reaction apparatus.
Patent CA-2212139-A1 (CA)
Inventor: MACKAY ROBERT W
IPC: H04R25/00
Filed: 1996-01-26
Abstract: Earmolds (101, 102) for holding communications devices within the ear in a secure and comfortable manner. The earmolds (101, 102) are designed to minimize protrusion into the ear canal, while providing security by extending the helix (103a, 103b, 404) of the earmold to fit under the crux of the ear's helix. These earmolds (101, 102) are also designed to avoid a seal in the ear canal, thereby reducing discomfort, improving wearer's ability to localize sounds. These earmolds (101, 102) are designed to fit the majority of people with the minimum number of required sizes. With this design, communication devices can be worn within the ear in a comfortable, safe, secure manner.
Patent CA-2212929-A1 (CA)
Title: Method and device for controlling dewatering of a fiber web
Inventor: KOTITSCHKE GERHARD
IPC: D21G9/00
Filed: 1997-08-13
Abstract: A method and device for producing a fiber web, particularly a paper web, from fiber suspension supplied to a twin wire former.  The former includes a first dewatering unit upstream in the path of the wire belts of the former and a subsequent downstream second dewatering unit.  At least one discharge line communicates with the second dewatering unit.  The first dewatering unit includes an open loop control device to vary its dewatering capacity.  The second dewatering unit has a measuring device communicating its water discharge line to measure the outgoing volume of water per unit time from the second unit. An additional closed loop control device includes an actual value input to which the measuring device is connected and a desired value input. The closed loop control device has an output for an actuating variable which triggers adjustment of the dewatering capacity of the first dewatering unit in such a way that the actual value approaches the desired value. The method of operation of this apparatus is also disclosed.
Patent CA-2213792-A1 (CA)
Title: Aircraft labyrinth fire seal
Inventor: VIETH GARY L
IPC: F02C7/25
Filed: 1997-08-25
Abstract: A fire seal (52) for an aircraft propulsion system including at least one mating plate pair (54) formed between a nozzle body (44) and an outer structure (24) and a support pylon (26). The mating plate pairs (54) each include an upper plate row (58) and a lower plate row (60), both rows extending in an arc (66) about an upper region (56) of the propulsion system, with a vertical overlap (88) existing between the upper and lower plate rows. A gap (90) exists between the upper plate row (58) and lower plate row (60) of each mating plate pair (54), preferably at all times.  A seal region (62) exists between the forward-most mating pair and the aft-most mating pair. A pressure equalization mechanism controls pressure between the area forward of the seal region (62) and the area aft of the seal region (62). A number of endplates (110) are positioned at various longitudinal locations near the lateral ends of the mating plate pairs. A method of fire-sealing an aircraft propulsion system fire zone area including providing at least one mating plate pair (54) positioned between opposed surfaces in order to create a labyrinth path through which flame has difficulty passing. The method further includes controlling pressure between the area forward of the mating plate pairs and the area aft of the mating plate pairs.
Patent CA-2214478-A1 (CA)
Title: Milk substitute and process for its manufacture
Inventor: WYSS HEINZ
IPC: A23C21/04
Filed: 1997-09-12
Abstract: Milk substitute which is produced from milk powder and whey powder, optionally and partially substituted with lactose, having the advantage of preventing or reducing the presence of free Ca++ calcium ions in the solution which are liable to destabilize the casein micelle.      The process for manufacturing the milk substitute from whey comprises dissolving the ingredients seqentially in two stages in batches or in a batch stage followed by an in-line stage, guaranteeing the thermal stability of the product in spite of the presence of a large quantity of whey proteins.
Patent CA-2216873-A1 (CA)
Title: Ratchet/release mechanism for a retrievable well apparatus and a retrievable well apparatus
Inventor: QUINN DESMOND
IPC: E21B23/06
Filed: 1997-09-26
Abstract: A  ratchet/release  mechanism  for  a  retrievable  well apparatus and a retrievable well apparatus includes a split ratchet ring engaging threads on a mandrel. Split ring wedge members engage an inclined end of the ratchet ring to maintain the ratchet ring in engagement with the mandrel.  The wedge members are prevented from radial outward movement by a sleeve. A resilient elastomer ring is positioned between the ratchet ring and an  internal  shoulder on the  sleeve.   The  ring compresses to enable the inclined end of the ratchet ring to slide up the wedge members upon movement of the mandrel in a first direction.  The release of the ratchet ring is effected by moving the sleeve. When the wedge members are no longer confined by the sleeve they move radially away from the ratchet ring allowing the ratchet ring to disengage from the mandrel.
Patent CA-2217213-A1 (CA)
Title: 9-substituted porphycenes
Inventor: MUELLER MARTIN
IPC: A61K31/40
Filed: 1996-04-04
Abstract: A porphycene of formula (I).
Patent CA-2218829-A1 (CA)
Title: Asynchronous transfer mode switching system
Inventor: SHINOHARA MASAYUKI
IPC: H04L47/20
Filed: 1997-10-22
Abstract: An asynchronous transfer mode switching system including a core switch section (CS102) in an output buffer-type configuration which has an ATM switching function between high-rate input and output ports, an input buffer module section (IXB20) which multiplexes plural low-rate input line to the high-rate input port of the core switch section, and an output buffer module section (OXB30) which separates the output of a high-rate output port of the CS into plural low-rate output lines. The IBX enables queuing for each output line and each service class. The OXB enables queuing for output line and service class accommodated by itself. When the buffer occupancy exceeds a threshold value, the OXB originates a cell inhibiting signal to the CS. When the queue length for each output port exceeds a  threshold value, the CS originates the cell inhibiting signal to all IXBs. The IXB controls to stop a cell transmission according to the cell inhibiting signal. An execution throughput is increased by suppressing occurrence of congestion inside an ATM exchange. The evenness of throughput is guaranteed between virtual channels using the same output line.
Patent CA-2219544-A1 (CA)
Title: Water filtration system for control of the zebra mussel
Inventor: BOND JEFFREY L
IPC: E02B5/08
Filed: 1997-10-22
Abstract: A water filtration system for preventing a Zebra Mussel from entering a water system having a water intake line extending into an aquatic environment exposed to Zebra Mussels. The system contains an intake line connection for connecting the filtration system to the intake line; at least one water collection line extending from the intake line connection; a water intake line which is disposed substantially parallel to the water collection line and which contains an orifice with a top surface and a copper screen recessed at least about 2.5 inches from the top surface; a first water filter and a second water filter, wherein each of these filters has a largest pore size that is small enough to prevent passage of an egg or veliger of Zebra Mussels; a copper screen surrounding each of the first water filter and said second water filter; and a housing surrounding each of the water filters and including a first filter intake and a second filter intake.
Patent CA-2220708-A1 (CA)
Title: Serum amyloid a protein
Inventor: KISILEVSKY ROBERT
IPC: A61K38/17
Filed: 1996-06-03
Abstract: A method is provided for potentiating the release and collection of cholesterol from inflammatory or atherosclerotic sites in vivo, the method including the steps of increasing the affinity of high-density lipoprotein for macrophages by administering to a patient an effective amount of a composition comprising a compound selected from the group consisting of native serum amyloid A (SAA) and a ligand having SAA properties thereby increasing the affinity of high density lipoprotein (HDL) for macrophages and potentiating release and collection of cholesterol.
Patent CA-2221639-A1 (CA)
Title: Improved helianthus annuus wherein palmitic acid and oleic acid levels are altered
Inventor: HEATON THOMAS C
IPC: A01H5/10
Filed: 1996-06-05
Abstract: Sunflower plants, seeds capable of forming the same, and a novel endogenous vegetable oil derived from such sunflower seeds are provided. The plants have the ability to yield an endogenous vegetable oil wherein the levels of palmitic acid and oleic acid are provided in an atypical combination via genetic control. The concentration of palmitic acid in the endogenous oil constitutes at least 20 (e.g., approximately 20 to 45) percent by weight of the total fatty acid content, and the concentration of oleic acid in the oil constitutes at least 45 (e.g. approximately 45 to 65) percent by weight of the total fatty acid content in the absence of hydrogenation or other chemical or physical modification. It was found that the plants of the present invention can be formed through the combination (as described) of genetic determinants that were found to be present in the Pervenets sunflower and the H-55-9-2-1 or H-55-9-2-2 sunflower. The novel endogenous oil of the present invention is particularly useful, inter alia, in the production of margarine, or a cocoa butter equivalent.
Patent CA-2224153-A1 (CA)
Inventor: BUGAJ JOSEPH E
IPC: A61K51/00
Filed: 1996-06-06
Abstract: Cette invention concerne des compositions de peptides radiomarqués destinées à un usage radiopharmaceutique et, de manière plus spécifique, à des peptides radiomarqués destinés à des fins diagnostiques ou thérapeutiques, et possédant un acide aminé non modifié à terminaison carboxy. Cette composition radiopharmaceutique peut être utilisée pour cibler un site biologique choisi. Le peptide radiomarqué se caractérise par le fait que son acide aminé à terminaison carboxy se présente sous sa forme acide carboxylique, le peptide étant couplé à un radionucléide à vocation diagnostique ou thérapeutique par un agent chélateur. Cette composition radiopharmaceutique comprend, de préférence, un peptide radiomarqué choisi dans le groupe constitué de la somatostatine, d'un analogue de somatostatine, d'un dérivé de somatostatine, et de peptides capables de se lier au récepteur de somatostatine, le peptide étant couplé à un radionucléide à vocation diagnostique ou thérapeutique par un agent chélateur, tandis que son acide aminé à terminaison carboxy se présente sous sa forme acide carboxylique.
Patent CA-2227254-A1 (CA)
Inventor: OWEN JEFFREY R
IPC: H03K19/173
Filed: 1996-09-04
Abstract: Integrated circuit components automatically establish or disable a levelpulling condition relative to a given input IC pin (22) as a function of detected signal activity at such IC pin. A logic signal responsive to signal activity at the IC pin drives the gate (32a) of a field effect transistor (FET 32) to dynamically establish or disable level-pulling function at the IC pin. Alternative embodiments include a flip-flop register (40) and an OR gate (60, Fig. 3) driving the gate of the FET.
Patent CA-2227512-A1 (CA)
Inventor: MCCULLOCH KENDALL
IPC: B60T17/00
Filed: 1998-04-01
Abstract: This machine is unique in that it uses compressed air in conjunction with a vacuum generator to drain, flush, and fill the transmission, power steering, brake system and differential in vehicles. The machine can be assembled to perform any one or a combination of these four functions. The machine is mounted on four casters on an approximately 24 inch square base to move easily from one service bay to another in a typical service shop.  Technical features include: - No moving parts. Power comes from a shop compressor connected with air hose and quick connect fitting. Air pressure creates the vacuum which drains the fluids from the vehicle. Air pressure forces the clean fluids from the machine into the vehicle and the contaminated fluids into the drain tank. - One man operation, fully portable. The machine can be rolled to any location on the shop floor and operated by one person. - Dedicated lines and cylinders. Each function (transmission, power steering, etc.) has a completely independent system to eliminate the possibility of cross contamination. - Waste is handled in an environmentally safe manner. The waste tank is emptied through a simple air pressure operation which provides speed and cleanliness - All fluids are visible. Clean fluids, contaminated fluids and waste fluids can be seen immediately in the clear lines and clear storage cylinders throughout the process. - Self contained and multi-function. The various tasks can be done more quickly and more efficiently with one unit than several. Also, a single pressure-vacuum unit can be used for all four functions, reducing the duplication of components. - No electricity. Because the machine is powered by a remote air compressor, no electrical hook-up is required. Eliminating electricity on the shop floor is a safety advantage as well as a simplification. - Reduced cycle time. The design of the machine is such that the time required for tasks that are normally done manually is greatly reduced. - Reduced fluid consumption. Because of the combination of the above features, the fluid required in any of the four functions is minimized.  Thus, greater efficiency and economy are achieved.
Patent CA-2229453-A1 (CA)
Title: Data transmitting method, data transmitting system transmitter, and receiver
Inventor: ADACHI FUMIYUKI
IPC: H04W28/04
Filed: 1997-06-23
Abstract: A data transmission method, data transmission system, and a transmitter and receiver are provided which can implement higher quality variable rate transmission by making a more positive rate decision. In a variable rate transmission method transmitting fixed time length frames, each including variable length transmitted data, a transmitting side transmits user data plus an error detecting code, and a receiving side, assuming the entire transmittable final bit positions of the frame data, carries out Viterbi decoding of the frame data to the final bit positions. If, at an assumed final bit position, the difference between the maximum value of likelihoods of a plurality of decoded data sequence candidates and the likelihood of the decoded data sequence obtained by terminating the decoding process is within a predetermined range, and a calculated error detecting code agrees with a received error detecting code, a decision is made that the assumed final bit position is the final bit position of the transmitted frame data, and the transmitted data :is recovered.
Patent CA-2230324-A1 (CA)
Title: Jet-propelled boat
Inventor: ASAI MASAHIRO
IPC: F02B25/20
Filed: 1998-02-23
Abstract: The expected performance of a jet-propelled boat is maintained, exhaust control valves are controlled and driven in an improved accuracy on the basis of the traveling speed of the jet-propelled boat, fuel consumption is improved and the exhaust gas is purified.        A two-stroke cycle engine 9 drives a jet propulsion unit 10 to make the jet propulsion unit 10 sucks in water and jets water to propel a hull 1. An exhaust control valve 40 is disposed near the exhaust port 39 of the engine to change the opening ratio of the exhaust port according to the operating condition of the engine. A driving mechanism for driving the exhaust control valve includes a hydraulic actuator 55. The power of water jetted by the jet propulsion unit 10 represents the traveling speed of the jet-propelled boat accurately. The exhaust control valve 40 is driven for opening and closing according to the pressure of water jetted by the jet propulsion unit 10 to achieve the optimum exhaust control by the exhaust control valve without entailing the excessive increase in the output of the engine 9.
Patent CA-2234539-A1 (CA)
Title: Surgical apparatus
Inventor: PRATT ARTHUR WILLIAM
IPC: A61F9/007
Filed: 1998-04-08
Abstract: Apparatus to remove tissue. The apparatus has an outer cannula and an inner cannula received within the outer cannula. The cannula are longitudinally movable relative to each other. There is an abutment at the end of one cannula to contact the other cannula. A drive permits advancing of the other cannula to contact the abutment whereby tissue between the other cannula and the abutment is removed. The invention finds particular application in removable of lens tissue from the eye of a human or other animal.
Patent CA-2234570-A1 (CA)
Title: Reactive coalescents
Inventor: SPEECE DAVID GERALD JR
IPC: C07C43/196
Filed: 1998-04-07
Abstract: Compounds useful as reactive coalescents and methods of improving the stability of reactive coalescents are disclosed. A process for the preparation of low molecular weight polymers which are also useful as reactive coalescents is also disclosed.