baber/WOPTO huggingface dataset:
Patent CA-2168998-C (CA)
Inventor: LABONTE ROGER EDMOND
IPC: F01M11/04
Filed: 1996-02-07
Granted: 2002-08-13
Abstract: A drain valve assembly for draining fluid from a container, for example an engine crankcase, is constructed with a first threaded bolt portion having external threads for engaging in a threaded drain outlet of the container and internal threads in an axial passage passing through the first threaded bolt portion,  a second threaded bolt portion having external and internal threads whereby,  in use, the external threads engage in the internal threads of the first threaded bolt portion to seal therewith and whereby passages extend through the first and second bolt portions to permit flow of fluid therethrough.  A sealing member  forms  part  of  the  second  threaded  bolt  portion whereby  on  full  insertion  of  the  second  threaded  bolt portion in a first position within the first threaded bolt portion, the sealing member engages an adjacent surface to prevent the escape of fluid from the  container  and,  on retraction to a second position, the flow of fluid through the first and second threaded bolt portions is permitted. The   second   threaded   bolt   portion   has   a   passage therethrough  which  is  of  a  first  cross-sectional  area opening into a passage of a second larger cross-sectional area terminating at the sealing member and having a side wall with at least one aperture therethrough for the flow of fluid between the passage in the first threaded bolt portion  and  the  passage  in  the  second  threaded  bolt portion.
Patent CA-2174050-C (CA)
Title: Electric vacuum cleaner
Inventor: SHIMADA SADAHIRO
IPC: A47L9/28
Filed: 1996-04-12
Granted: 2001-07-17
Abstract: An electric vacuum cleaner includes a main body. A hose is connected to the main body. A motor-drive brush is provided in a floor nozzle. An extension pipe connects the floor nozzle and one end of the hose. An electric conductor is located in the extension pipe. The extension pipe includes an outer tube, an inner tube, a first electric connection terminal, a second electric connection terminal, a first conductor casing, and a second conductor casing. The first electric connection terminal is provided on one end of the outer tube. The second electric connection terminal is provided on one end of the inner tube. The inner tube slidably extends into the outer tube. The electric conductor is connected between the first electric connection terminal and the second electric connection terminal. The electric conductor is accommodated in the first conductor casing and the second conductor casing. The first conductor casing is provided on the outer tube. The second conductor casing is provided on the inner tube. The outer tube has a dust suction passage. The inner tube has a dust suction passage. The first conductor casing has an interior isolated from the dust suction passage in the outer tube. The second conductor casing has an interior isolated from the dust suction passage in the inner tube.
Patent CA-2178859-C (CA)
Title: Direct-fired stratified atmosphere furnace system
Inventor: KOBAYASHI HISASHI
IPC: F27D99/00
Filed: 1996-06-12
Granted: 1999-09-14
Abstract: A direct-fired furnace wherein a charge-proximal stratum is established between the charge and combustion gases emanating from one or more burners oriented above the charge, wherein the charge-proximal stratum has a different oxidative effect upon the charge than does the combustion gases.
Patent CA-2180221-C (CA)
Title: Soil release polymers and detergent compositions containing them
Inventor: BLOKZIJL WILFRIED
IPC: C08G63/688
Filed: 1996-06-28
Granted: 2008-04-29
Abstract: A water-soluble copolyester comprising units of a polyglycol or capped polyglycol (for example, polyethylene glycol or polyethylene glycol methyl ether), an aromatic dicarboxylic acid (for example, terephthalic acid) and at least 30 mole% of a polyol having at least three hydroxyl groups (for example, glycerol), but free of ethylene glycol units, is a highly effective soil release polymer for use in detergent compositions. The aromatic dicarboxylic acid units may include units of a sulphonated aromatic dicarboxylic acid (for example, sulphoisophthalic acid).
Patent CA-2183572-C (CA)
Inventor: WEXLER MARK H
IPC: B64D35/08
Filed: 1995-01-30
Granted: 1999-08-03
Abstract: The invention is a propulsion system for a lighter-than-air vehicle. In detail, the propulsion system includes a thrust producing assembly (26) rotatably mounted on the vehicle (10), about an axis of rotation in a plane at an acute angle to the vertical axis (14) of the vehicle the assembly (26) rotatable in the plane from a position wherein the thrust axis of the assembly (26) is aligned with the longitudinal axis (12) to a position at least plus or minus ninety degrees thereto. A fuel efficient powerplant assembly (32A, 32B) mounted within the vehicle (10) having sufficient power for cruise conditions, and an output drive shaft (46) coupled to the thrust producing assembly (26). A light weight, high power powerplant assembly (71) is mounted directly to the thrust producing assembly (26) having sufficient power for docking conditions. A first clutch (39A, 39B) is provided for decoupling the fuel efficient powerplant (32A, 32B) from the thrust producing assembly (26) and second clutch means (73) is provided for de-coupling the powerplant (71) from the thrust producing assembly. An actuation system (74) is provided for rotating the thrust producing assembly about the axis of rotation.
Patent CA-2200919-C (CA)
Inventor: MATSUO TAKASHI
IPC: B60R22/34
Filed: 1997-03-25
Granted: 1999-09-28
Abstract: A vehicle seat belt retractor attaching structure is constructed in such a manner that an inner panel is divided into at least two parts, the inner panels obtained by dividing the inner panel are used as upper and lower inner panels respectively, a bulged part is formed in the upper inner panel so as to be protruded into a car cabin from the lower inner panel and the seat belt retractor is fixed so as to be interposed between the bulged part of the upper inner panel and the lower inner panel.
Patent CA-2201663-C (CA)
Inventor: VAN HAAG ROLF
IPC: D21G1/02
Filed: 1997-04-03
Granted: 1999-12-14
Abstract: A calender for a sheet material, e.g., paper, having at least two treatment stations through which the sheet material passes  in succession.   To regulate a desired parameter of the sheet material, each treatment station may include a plurality of adjacently arranged adjustment zones positioned in a row extending across a width of the sheet material.   The adjustment zones of one of the treatment stations  are positioned to be  offset  relative  to  the adjustment  zones  of  the other treatment  station by a fraction of a width of the adjustment zones, e.g., one-half the width.   The particular arrangement enabling improved correction   potential   without   increasing   structural expenditure.
Patent CA-2202249-C (CA)
Inventor: HARRIS WILLIAM J
IPC: B29C41/12
Filed: 1995-10-17
Granted: 2007-04-17
Abstract: This invention relates to polyamic acids and to methods for converting polyamic acid into polyimidebenzoxazole polymers. The polyamic acids are prepared by reacting a dianhydride with a diaminobenzoxazole under conditions sufficient to form polyamic acid with an inherent viscosity of greater than 2.0 dL/gram, as measured at 0.2 g/dL in N-methyl-pyrrolidinone at 25 °C. The polyamic acids are converted to polyimidebenzoxazole in the form of films, fiber and coatings using thermal and chemical processes.
Patent CA-2208492-C (CA)
Inventor: SATTLER ERIC
IPC: F02D9/16
Filed: 1997-06-13
Granted: 2006-01-10
Abstract: A plastic throttle body valve including a valve body having an inferior passage way connecting an inlet and an outlet of the valve body. The valve body includes an arcuate surface through which the inlet is provided, and a closure member pivotally attached to the valve body for selectively opening and closing the inlet. The valve has the advantage that there is no obstruction in the air stream when the valve is wide open.
Patent CA-2210615-C (CA)
Title: Dental implant
Inventor: SOMBORAC STEFAN
IPC: A61C8/00
Filed: 1997-07-16
Granted: 2007-04-10
Abstract: A dental implant for installation into a mouth is disclosed. The implant includes a one piece implant body to which is attached an abutment portion for anchoring a denture or tooth replacement. The implant body includes a coronal portion having a keyway. The abutment portion includes a key which mates with the keyway to form a non-rotational joint. In one aspect of the invention, the abutment portion is cemented into the keyway. In another aspect of the invention the key is tapped in to the keyway to form a cold weld. There is also shown a method of installing a dental implant which includes press fitting the implant body into a preformed cylindrical bore at the implant site. The abstract is made retrievable without disturbing the bone implant interface.
Patent CA-2213349-C (CA)
Inventor: VARNEY JAMES
IPC: G01F1/36
Filed: 1997-08-19
Granted: 2000-10-31
Abstract: Data processing system for calculating the flowrate of air from a pressurized reservoir to an air pressure communication line.  A pressure sensor is connected to the reservoir to provide an analog signal indicating pressure, which is converted into a digital pressure signal. The system also has a sensor connected to pressure ports upstream and downstream of an orifice, located between the reservoir and the air pressure communication line.  This provides an analog differential pressure signal which is converted into a digital differential pressure signal, which is processed to obtain a first digital flowrate signal. This is combined with the digital pressure signal to obtain a flowrate correction value, from which a revised flowrate value is obtained.  This revised flowrate value may be sent to an operator of the system, to a control system, or to an alarm system.
Patent CA-2214140-C (CA)
Inventor: GITHUKU DAVID NGIBUINI
IPC: C11D11/00
Filed: 1996-03-04
Granted: 2001-02-13
Abstract: A process for preparing detergent agglomerates for a detergent composition is provided. The process comprises the steps of: (a) providing a non-linear viscoelastic surfactant paste including, by weight of the surfactant paste, from about 70 % to 95 % of a detersive surfactant and from about 5 % to about 30 % of water; (b) regulating the amount of sodium carbonate in the surfactant paste such that the surfactant paste has a Maximum Shear Rate of at least 20 sec-1 so that the surfactant paste is processable; (c) charging the surfactant paste into a high speed mixer/densifier; (d) inputting from about 1 % to about 70 % by weight of a detergency builder into the high speed mixer/densifier; and (e) agglomerating the surfactant paste and the builder by treating the surfactant paste and the builder initially in the high speed mixer/densifier and subsequently in a moderate speed mixer/densifier so as to form detergent agglomerates.
Patent CA-2214231-C (CA)
Inventor: JORION BRUNO
IPC: G01T1/17
Filed: 1997-08-29
Granted: 2000-11-21
Abstract: The present invention is based on a digital pulse sampling and detection technique, which samples the (nuclear) pulse train at a constant frequency asynchronously with the actual pulses, which occur at random times. The fact that many samples are available for each pulse allows many pulse train analysis operations, such as: 1 ) pulse integration (area determination under pulse), 2) pulse shape discrimination, 3) pile-up rejection and 4) time of arrival determination (multiscaler analysis) which traditionally were done through complex analog circuits to be done in a compact digital arrangement. This invention deals with the first 3 aspects of digital pulse train analysis.
Patent CA-2217735-C (CA)
Title: Water softening system with self adjusting rinse cycle
Inventor: ZABINSKI JOHN E
IPC: C02F1/42
Filed: 1997-02-18
Granted: 2006-06-06
Abstract: A water softening system (10) is provided in which a determination is made whether the slow rinse cycle of a regeneration has been completed or is abnormal. A  reference cell (Rr) and a spaced sensing cell (Rs) are provided in a water tank (12).  Reference cell (Rr) and spaced sensing cell (Rs) carried by probe (27) are connected via lines (30, 31 and 32) to pins (1, 2 and 3) of plug (34). The impedance difference of the solution between the reference cell (Rr) and the sensor cell (Rs) is sensed. If the impedance difference is a first state, then after a predetermined period of time a determination is made if the impedance difference is a second state. If the impedance difference is a second state, then after a predetermined period of time a determination is made if the impedance difference is a third state, this indicates that the sodium ion concentration is uniformly reduced in the zone between the reference cell (Rr) and the sensing cell (Rs) and that the slow rinse cycle has been completed.
Patent CA-2226512-C (CA)
Inventor: CHOU WEI FAN JOHN
IPC: H05B41/36
Filed: 1997-04-30
Granted: 2006-02-14
Abstract: A lighting control circuit that controls the lighting of particular lamps in response to the toggling of the power switch. The circuit a) connects only with the high (output) side of a lighting system's ballast, b) is completely contained on the high side, and c) with regard to toggling, is dependent upon only a single time period. The circuit can be used with any ballast which makes use of an output tranformer and no change need be made to the original ballast circuitry. Users will find operation of the circuit to be straightforward. A triac driven by a flip-flop via a driver transistor is used to control the high frequency AC power that is used to drive the lamps. A Schmitt trigger sharpens the signal generated by the ballast output transformer in response to the toggling of the light switch which is employed to change the output state of the flip-flop. Operationally, all the lamps driven by the ballast are lit when the power switch is initially turned on. Toggling the power switch once while all of the lamps are lit causes only a predetermined number of the lamps to remain lit.     Toggling the power switch while only a portion of the lamps are lit causes all of the lamps to light again. Leaving the power switch off causes all of the lamps to be turned off. The toggling may be performed quickly or leisurely, so long as the entire toggle cycle is completed within a predetermined amount of time.
Patent CA-2226752-C (CA)
Title: A novel asymmetric synthesis of r and s warfarin and its analogs
Inventor: LI HUI-YIN
IPC: B01J31/24
Filed: 1996-07-10
Granted: 2002-02-19
Abstract: The present invention provides a novel process for making compounds of formu la (2a or 2b) or pharmaceutically acceptable salts thereof, wherein R1 is selected from the group consisting of phenyl and phen yl substituted with at least one group selected from NO2 and halogen, R2 is H; R3 is selected from the group consisting of C1-4 alkyl, phenyl, and benzyl; and, R4 is selected from the group consisting of H and halogen; which comprises the steps of: a) oxidizing a racemate of formula (2) or a salt thereof to form a dehydro-compound of formula (3), wherein R5 is selected from the group consisting of H, CH3, benzyl, C2-8 acyl, Na, Li and K; and, b) asymmetrically hydrogenating a compound of formula (3) in the presence of a chiral phosphin e catalyst to form a compound of formula (2a or 2b).
Patent CA-2227086-C (CA)
Title: Method and apparatus for dynamic negotiation of protocols
Inventor: O'LEARY EAMON
IPC: H04L29/06
Filed: 1998-01-15
Granted: 2002-03-19
Abstract: Two intelligent nodes are provided with the capability of negotiating a protocol between them so that if the intelligent nodes operate at two different protocols then they can select a protocol appropriate for their communication.  Furthermore, the intelligent nodes are provided with a locking shift capability so as to select between codesets that are available within a selected protocol.
Patent CA-2227531-C (CA)
Inventor: TAKAMI KAZUHISA
IPC: G06T15/50
Filed: 1998-01-20
Granted: 2003-03-18
Abstract: The present invention is directed to a structured graphics system capable of performing high-speed processing with a small table capacity. The present invention provides a device for controlling a small table capacity comprising a table of logarithms and a table of exponents preserving values of a logarithmic function and exponential function with a base of the second power, a multiplier, a shift unit for shifting the input value by a proper integer when the domain of logarithm is not included in the input value range of the table of logarithms, a logarithm addition unit for adding the shift amount to the value referred to in the table of logarithms, an exponent subtraction unit for subtracting a proper integer L from the input value when the domain of the exponential function is not included in the input value range of the table of exponents, and an exponent shift unit for shifting the referred value in the table of exponents the subtraction amount. A high-speed processing unit comprises a converter for converting floating-point data to fixed-point data having a bit of decimal point.
Patent CA-2229482-C (CA)
Title: Procede de fabrication d'une composition detergente de concentration elevee avec utilisation d'air prepare
Inventor: CAPECI SCOTT WILLIAM
IPC: C09K23/00
Filed: 1996-08-06
Granted: 2002-01-29
Abstract: La présente invention concerne un procédé de préparation d'agglomérats de détergents de forte concentration, au moins 650 g/l. Ce procédé comprend les opérations suivantes: a) agglomération d'une pâte tensio-active aqueuse et d'un détergent sec dans un malaxeur-densificateur afin de former des agglomérats de détergent ayant une concentration d'au moins environ 650 g/l; b) introduction d'air dans le malaxeur-densificateur pendant qu'on agglomère la pâte tensio-active aqueuse et le détergent sec, l'air ayant une humidité relative inférieure à celle, à l'équilibre, des agglomérats de détergent, de telle sorte qu'au moins une faible quantité d'eau provenant de la pâte tensio-active est absorbée par l'air.
Patent CA-2231750-C (CA)
Inventor: JANOFF ANDREW S
IPC: A61K9/10
Filed: 1996-09-12
Granted: 2006-07-11
Abstract: L'invention se rapporte à un taxane possédant un hydrocarbure fixé aux positions 2' et/ou 7, la position alpha de l'hydrocarbure étant occupée par un "groupe favorisant l'hydrolyse". La substitution d'un groupe favorisant l'hydrolyse au motif méthylène occupant généralement la position alpha permet d'améliorer l'hydrolyse in vivo de la liaison hydrocarbure-taxane, et par conséquent, l'activité thérapeutique du taxane. L'invention se rapporte également à des compositions contenant des taxanes et à des procédés d'administration de taxanes à des animaux, y compris ceux atteints de cancers.
Patent CA-2233716-C (CA)
Title: Methods of using discodermolide compounds
Inventor: LONGLEY ROSS E
IPC: C07D309/30
Filed: 1996-12-05
Granted: 2006-05-09
Abstract: Novel lactone compounds from the marine sponge Discodermia dissoluta have been isolated. These compounds and their analogs have been shown to have activity against mammalian cancer cells, and can be used in treating human patients which host cancer cells, including leukemia, melanoma, and breast, colon, CNS, and lung tumors.
Patent CA-2241667-C (CA)
Inventor: NOLL BRAD L
IPC: F16K15/06
Filed: 1998-06-25
Granted: 2001-07-31
Abstract: A  check valve  for preventing  backflow  in  a conduit.  The check valve includes a check valve mechanism having a valve seat defining an opening for fluid flow, a seal retainer positioned downstream of the valve seat and configured to seal the opening and a linkage between the valve seat and seal retainer.  The linkage permits guided axial displacement between the valve seat and the seal retainer.   The linkage also provides a retention force urging the seal retainer into engagement with the valve seat  and  creating  a  fluid  seal  therebetween  when  a downstream flow in the opening is insufficient to overcome the retention force provided by the linkage.
Patent CA-2242746-C (CA)
Inventor: SEECHARAN TONY
IPC: B28B19/00
Filed: 1998-07-08
Granted: 2002-06-11
Abstract: Methods and apparatus are disclosed for producing gypsum board having at least one facing sheet, a core of cementitious material such as low density gypsum, and an intermediate layer of bond promoting material, such as higher density gypsum located therebetween. The apparatus includes a foaming table having a transverse gap. The facing sheet travels along the forming table over the gap. A spreader roller extends partially into the gap to depress the facing sheet. The bond promoting material is deposited on the facing sheet upstream of the spreader roller and the spreader roller coats the facing sheet with the bond promoting material. The core layer material is deposited on the facing sheet downstream of the spreader roller on top of the bond promoting coating. The speed of the spreader roller, the tension in the facing sheet, and the viscosity of the bond promoting material are varied within predetermined limits to adjust the thickness of the bond promoting material layer and prevent build up of said material on the spreader roller.
Patent CA-2246818-C (CA)
Inventor: BRODFUHRER RUSSELL E
IPC: G06F13/00
Filed: 1998-09-04
Granted: 2003-07-29
Abstract: A method and apparatus for providing back-up management of a network element in a multi-tiered network management system. Network elements have a primary element manager responsible for managing communications with that network element and a secondary element manager that can be at a geographically remote location responsible for assuming control of communications with the network element should the primary element manager become unable to do so.
Patent CA-2256936-C (CA)
Title: System for electronic repository of data enforcing access control on data search and retrieval
Inventor: MIRLAS LEV
IPC: G06F21/62
Filed: 1998-12-23
Granted: 2002-04-02
Abstract: When an electronic document is made available for review by other entities, it is often convenient to store the document in a repository or database managed by a third party. A  system is provided in which the entities authorized by the originator of a document to access it in the data repository, are able to securely search for the document filed with a third party repository without having to trust the administrator of the repository to provide accurate information on their access privileges. The document originator, the repository administrator and all entities with access privileges to data in the repository have vault environments which are secure extensions of their respective work spaces. The vault of the document originator maintains an access control list (ACL) for each document it has deposited with the repository. The vault of each entity with access privileges to any documents in the repository maintains a capability list of the entity's access privileges to all of the documents stored in the repository. The entity itself maintains proof of the latest version of its capability list on its own desktop. When the ACL for a document is updated in the document originator's vault, the originator's vault determines what entities are affected by the change, and communicates the change to the affected entities' vaults. Each vault updates its own capability list, and at the first available opportunity, updates the proof of the latest version of the capability list on the entity's desktop.