baber/WOPTO huggingface dataset:
Patent CA-2190421-C (CA)
Inventor: GOETTEL WALTER E
IPC: F04B39/04
Filed: 1996-11-15
Granted: 2000-04-11
Abstract: This invention relates to a piston arrangement for minimizing water blow-by in a cylinder bore comprising a set of metallic compression and oil rings and a resin-filled O-ring for reducing water blow-by in the cylinder bore until the set of metallic compression and oil rings are properly seated in the cylinder bore.
Patent CA-2195011-C (CA)
Title: Antenne-cornet rayonnant d'alimentation en micro-ondes ondulee et conique
Inventor: RODEFFER CHARLES E
IPC: H01Q13/02
Filed: 1995-07-25
Granted: 1999-09-28
Abstract: On décrit une antenne-cornet rayonnante ondulée et conique. Un segment d'ouverture conique (60) est disposé à l'entrée (20) de ce cornet (10) et un deuxième segment cylindrique lisse (200, 210) est formé au niveau de sa gorge (30). Le segment d'ouverture conique (60) comprend deux zones (70, 220), l'une (70), conique et ondulée, prévue à l'entrée (20) et dotée de plusieurs rainures (70) parallèles à l'axe central (204) du cornet rayonnant (10). Chaque rainure (70) présente une surface interne (250) proche de cet axe central (204) et une surface externe (240) qui en est plus éloignée. La première rainure (70A), adjacente à la zone conique lisse (220), présente deux lèvres (280, 290) constituant son extrémité. La dernière rainure (70C) placée à l'entrée (20) du cornet rayonnant (10), présente une surface interne (240B) dont la longueur dépasse celle de la surface externe (240C).
Patent CA-2198603-C (CA)
Title: Use of stem cell factor and soluble interleukin-6 receptor for the ex vivo expansion of hematopoietic multipotential cells
Inventor: NAKAHATA TATSUTOSHI
IPC: C12N5/00
Filed: 1995-11-16
Granted: 2000-06-27
Abstract: Stem cell factor in combination with soluble interleukin-6 receptor, interleukin-6, for gp130 signaling, supports the proliferation, differentiation and terminal maturation of blood cells from normal human hematopoietic multipotential cells.
Patent CA-2199214-C (CA)
Inventor: BLACK GREGORY REDMOND
IPC: H03K17/30
Filed: 1997-03-05
Granted: 2000-05-16
Abstract: A switching circuit (30) in a portable telephone connects a gate of a field-effect transistor (Q1) to a voltage below the transistor's gate threshold voltage when the voltage at a first power source terminal (B) falls below a threshold voltage, thus disconnecting the first power source terminal (B) from a portable telephone power input terminal (B+) and connecting a second power source terminal (A) to the power input terminal (B+). The threshold voltage is set at a voltage above the minimum supply voltage of the portable telephone. The first power source terminal may be connected to a main battery and the second power source terminal may be connected to an adapter such as a battery eliminator adapter, hands-free adapter, or mobile transceiver adapter. This switching circuit prevents a call in progress from being disconnected when power sources are exchanged during a GSM burst.
Patent CA-2199232-C (CA)
Inventor: KILGORE MARION D
IPC: E21B33/12
Filed: 1997-03-05
Granted: 2004-07-13
Abstract: In a retrievable packer adapted for service under high temperature and high pressure operating conditions, improved retention of the packer in the wellbore is achieved by use of an inventive slip/wedge system, wherein the cones on the wedges are spaced a progressively slightly greater distance apart from their corresponding slip cones, from the centermost slip cone to the outermost slip cone. This forces the center of the slip to be loaded first. As greater forces are exerted on the wedges from end to end, the wedge will deform slightly and the next cone of the wedge will make contact with its matching portion of slip.      Thereby, as the wedges are loaded higher and higher, more wedge cones come into bearing contact with the slip. Further, a barrel slip is used, to provide a uniform circumferential distribution of forces. This design effectively allows initial setting of the packer with very little slip tooth contact area. This permits the slip to quickly get a good grip into the casing wall. Subsequent higher loading brings more and more slip teeth to bear and prevents overstressing the casing.
Patent CA-2210406-C (CA)
Inventor: TROUT WILLIS Z
IPC: E04B2/74
Filed: 1997-07-14
Granted: 2003-01-14
Abstract: A butt joint hanger (30) is disclosed having a central elongated rail (32) and two support elongated rails (34, 36) positioned on either side of the central rail (32).  One or more U-channels (38) interconnect the three rails (32, 34, 36) at pivoting attachment points (40).  The butt joint hanger (30) is inserted between two construction beams (94, 96) and the butt ends (108, 114) of two sheets of wallboard (104, 112) are attached to the central rail (32) by means of drywall screws (110).  The two support rails (34, 36) abut against the surfaces of the wallboard flush with the nailing surfaces (98, 100) of the construction beams (94, 96) and the drywall screws (110) force the butt ends (108, 114) of the wallboard out of the plane (102) of the wallboard and into engagement with the central rail (32).  This results in a depression area (116) adjacent both butt ends (108, 114) which can be easily filled with plaster (122) to produce a flat smooth butt joint (126).
Patent CA-2213467-C (CA)
Title: Establishment of a flexible rate interface link to restore channels from a failed communication link
Inventor: NORTH SANDRA S
IPC: H04L69/40
Filed: 1997-08-20
Granted: 2001-11-27
Abstract: In a telecommunication switching system having a plurality of switch nodes with each of the switch nodes responsive to a failure of a communication link within a group of communication links to establish a flexible rate interface (FRI) link upon there being no spare channels within the group of communication links and to switch active calls from the channels of the failed communication link to the channels of the newly established FRI link. Advantageously, the group of communication links can be a non-facility access service (NFAS) group.. Advantageously, this allows for additional B channels to be added to the NFAS group even though there are no remaining physical communication links between the two switch nodes being interconnected by the NFAS group. The establishment of the FRI link allows for the addition of B channels to the NFAS group with these B channels being routed through other switch nodes of the communication switching system. The FRI link becomes part of the NFAS group and control is provided for the B channels of the FRI link by the primary D channel of the NFAS group. Advantageously, the FRI link can be set up through other communication facilities other than the communication switching system. For example, if the two switch nodes interconnected by the NFAS group are both connected to the public telephone network, the FRI link can be set up through the public telephone network.
Patent CA-2217260-C (CA)
Title: Use of vitamin d2 or vitamin d4-derivatives for the manufacture of a medicament for the treatment of secondary hyperparathyroidism
Inventor: BISHOP CHARLES W
IPC: A61K31/714
Filed: 1996-04-03
Granted: 2000-08-01
Abstract: A method for preventing loss of bone mass or bone mineral content in a human being suffering from secondary hyperparathyroidism by administering a sufficient amount of 1.alpha.-OH vitamin D2, 1.alpha.,24(S)-(OH)2 vitamin D2, 1.alpha.-OH vitamin D4 or 1.alpha.,24(R)-(OH)2 vitamin D4.
Patent CA-2220240-C (CA)
Title: Configurable chirp mach-zehnder optical modulator
Inventor: YU JUN
IPC: G02F1/017
Filed: 1997-11-05
Granted: 2001-08-28
Abstract: A multi-quantum-well Mach-Zehnder optical phase modulator selectively generates positive and negative frequency chirp.  The modulator has an asymmetric input y-junction coupler and an asymmetric output y-junction coupler joined by interferometric arms defining two optical paths of unequal length so as to generate a fixed phase difference of .pi. or an integral odd multiple thereof.  The modulator has electrodes on each arm for receiving modulating electric fields in a push-pull relationship.  A control electrode is provided on  one of the arms for receiving a control electric field.  The modulator, when driven without any control electric field generates negative frequency chirp, and selectively generates positive frequency chirp in response to adjustment of the control electric field.  As an alternative, the length differential between respective arms can be selected to generate a phase difference of .pi./2, in which case control electrodes are required on each of the interferometric arms.  A method of selectively generating a modulated optical signal having selectively configurable frequency chirp is also described.
Patent CA-2225292-C (CA)
Inventor: SILK DOUGLAS F
IPC: B28B7/00
Filed: 1998-01-29
Granted: 2002-02-19
Abstract: The present invention is directed to a process for manufacturing concrete dual blocks where the concrete block is separated into two individual blocks during the manufacturing process without an additional separating step after curing.      The process comprises the steps of creating a mould cavity with a pull plate forming a bottom surface where the pull plate has an upper concave surface sloping outwardly and upwardly along its length from a separation line at the centre of the upper surface of the pull plate, the separation line extending along the width of the plate, filling the mould cavity with wet concrete, compressing the concrete in the mould cavity with a tamper head having a lower convex surface corresponding to the upper surface of the pull plate, removing the pull plate, removing the mould and then the tamper head wherein the block has an upper and lower surface sloping outwardly and upwardly from the separation line at the centre of each of the upper and lower surfaces towards its outer edge along its length and having v-shaped separation grooves at the separation lines; and allowing the block to settle on a flat pallet where it will split at the separation grooves into two individual blocks without the need for a separate , manufacturing step after curing.
Patent CA-2225440-C (CA)
Inventor: BLEY ROBERT
IPC: A61M25/06
Filed: 1997-12-22
Granted: 2002-03-26
Abstract: The present invention relates to a stiffening member, which is a stylet, that helps increase the fluid flow area within a catheter. In a preferred embodiment, the stylet is made of a single piece of flat rectangular stock that can be twisted to provide equal rigidity in all directions. A cross-section of the stylet reveals that the substantially flat rectangular shape of the stylet permits maximum fluid flow between the stylet and the catheter. This results in increased ease in manipulating and removing the stylet from the catheter. In addition, because the preferred embodiment of the stylet comprises a single element, it is easier to manufacture and should result in lower manufacturing costs. Moreover, the use of the present invention should also result in lower overall health-care costs.
Patent CA-2226231-C (CA)
Title: Continuous solid state web coating process and webs produced thereby
Inventor: KOSLOW EVAN E
IPC: B05D3/02
Filed: 1998-01-05
Granted: 2008-01-29
Abstract: One or more particulate active agents are fused to the surface of a substrate web by mixing the particulate agents with a particulate binder having a particle size not exceeding an average diameter of approximately 40 microns and coating the composite mixture onto the surface of the substrate. Thereafter, the coated substrate is heated to a temperature equal to or greater than the Vicat softening temperature of the binder and compressed within the nip of a pair of pressure rolls to achieve fusion. If desired, a top layer may be placed upon the coated composite prior to the compression step. Also disclosed are various products manufactured by the process.
Patent CA-2228760-C (CA)
Inventor: TILLANDER HANS
IPC: A61M5/142
Filed: 1996-08-09
Granted: 2004-08-03
Abstract: Pressure infusion apparatus (10) of the type that includes a chamber (13) fo r at least one infusion bag (21). In the chamber a pressure apparatus (18) applies pressure on the infusion bag to press out infusion liquid through an infusion tube (24). The pressure apparatus (18) includes a pneumatic pressure chamber (25) and a pressure source (27). Betwe en the pressure storage chamber (25) and the pressure source (27) there is a pressure reduction valve (26) that significantly reduces the pressure in the pressure source (27) relative to the maximum loading pressure in the pressure storage chamber (25). The pressure source (27) includes an essentially unstretchable, air tight, flexible membrane (27a) which divides the chamber (13) into an infusion chamber and a pressure chamber (27b) and which presses directly on the bag (21). At least one flow regulating valve (28) giving a calibrated flow p er unit time is attached to the infusion tube (24) or its extension from the infusion bag (21).
Patent CA-2229206-C (CA)
Inventor: SIMON DANIEL R
IPC: G06Q20/06
Filed: 1996-08-29
Granted: 2003-07-15
Abstract: An electronic cash protocol including the steps of using a one-way function f1(x) to generate an image f1(x1) from a preimage x1; sending the image f1(x1) in an unblinded form to a second party; and receiving from the second party a note including a digital signature, wherein the note represents a commitment by the second party to credit a predetermined amount of money to a first presenter of the preimage x1 to the second party.
Patent CA-2233887-C (CA)
Title: Optical encoder for indicating the position of an adjustable member
Inventor: BREITBARTH NEAL E
IPC: G01B11/00
Filed: 1996-10-02
Granted: 2004-02-10
Abstract: An apparatus (10) indicating the position of an adjustable lever (18), such as a control lever in a digital audio console, is described. A frame member (12, 13, 15, 17) constrains movement of the adjustable lever (18). The lever is operatively connected to an encoder apparatus (22), such that movement of the lever (18) causes movement of the encoder apparatus (22) to provide an indication of position of the lever (18) within the frame member (12, 13, 15, 17).
Patent CA-2242415-C (CA)
Title: Acceleration sensor
Inventor: TABOTA JUN
IPC: G01P15/09
Filed: 1998-07-07
Granted: 2000-09-26
Abstract: An acceleration sensor includes a circuit substrate and an acceleration detection element. The acceleration detection element is mounted on the circuit substrate and formed by using a piezoelectric body and is constructed so as to detect an acceleration which acts in a shearing direction. An electrode formed on the circuit substrate and an electrode on the bottom surface of the acceleration detection element are bonded together via a conductive bonding material so that they do not have direct contact with each other.
Patent CA-2246057-C (CA)
Inventor: TREABA CLAUDIU
IPC: H04R25/00
Filed: 1996-01-31
Granted: 2005-12-20
Abstract: An elongated implantable electrode assembly (50) includes a set of electrode pads (12, 14) arranged in a pre-selected pattern, and a plurality of longitudinal wires (34, 36), each wire being connected to at least one pad. The electrode assembly is formed by first depositing the pads (12, 14) on a sacrificial layer (10), adding the wires (34, 36) to the pads (12, 14), embedding the pads and wires in a carrier (46) and then removing the sacrificial layer (10). These steps can be performed using photolithographic techniques.
Patent CA-2246985-C (CA)
Inventor: ARAI JIICHI
IPC: A61M5/31
Filed: 1998-09-15
Granted: 2007-02-06
Abstract: A prefilled syringe comprising: a tubular body which has an open front end and an open rear end; a front assembly which is mounted on an outer periphery of a front end portion of the tubular body; a finger grip which is mounted on an outer periphery of a rear end portion of the tubular body; a front sealing member which is provided in the tubular body so as to be disposed forwardly of injection liquid; a rear sealing member which is provided in the tubular body so as to be disposed rearwards of the injection liquid; a plunger rod which is provided so as to be movable in the tubular body; a temporary stop member for temporarily stopping the plunger rod through retention of the temporary stop member by the finger grip such that the rear sealing member is temporarily stopped at a predetermined position of the tubular body; and a retention canceling member for canceling the retention of the temporary stop member by the finger grip without moving the plunger rod.
Patent CA-2250004-C (CA)
Title: Shaving system and method
Inventor: CHAULK DONALD ROBERT
IPC: B26B21/40
Filed: 1997-04-08
Granted: 2003-09-16
Abstract: A shaving system includes a replaceable shaving cartridge (14) and a shaving razor handle (12). The replaceable shaving cartridge (14) has a housing carrying (16) blades (18), a guard (20), a cap (22), and a camming surface.  The cartridge includes an interconnect member (24) having a pivotal support structure that pivotally supports the housing (16) and a base structure (27) adapted to be removably and fixedly attached to the handle (12). A shaving razor handle (12) has an elongated hand gripping structure and a cartridge support structure extending from an end of the hand gripping structure. The cartridge support structure has an extension (26) with outer side surfaces that mate with inwardly directed surfaces of a recess (130) on the cartridge and an end surface with an opening. The extension has an asymmetrical shape to ensure proper orientation. A spring-biased plunger (44) is retained in the cartridge support structure and extends through the opening of the cartridge support structure.
Patent CA-2257255-C (CA)
Title: Revetement de sol elastomere a faible taux d'emission
Inventor: SCHWONKE KARL-HEINZ
IPC: B29C43/30
Filed: 1997-06-11
Granted: 2002-02-12
Abstract: La présente invention concerne un revêtement de sol qui ne provoque pratiquement pas d'émissions entraînant des odeurs désagréables et/ou d'émissions nocives, et qui ne présente pas de modifications de teinte dues au vieillissement, sur une longue période. L'invention concerne un procédé de production dudit revêtement. Ce revêtement de sol contient un élastomère à base d'une polyoléfine d'une masse volumique de 0,918 g/cm<3> en tant que liant polymère.
Patent CA-2257310-C (CA)
Title: Agencement de support pour couler des feuillards de faible epaisseur
Inventor: URLAU ULRICH
IPC: B22D11/12
Filed: 1997-06-03
Granted: 2005-12-06
Abstract: L'invention concerne un agencement de support destiné à la bande convoyeuse utilisée dans des installations de coulée de feuillards de faible épaisseur. L'acier liquide est coulé sur la bande convoyeuse en circulation. La bande convoyeuse est pourvue de son côté inférieur d'éléments générateurs d'une pression négative, de soutien et de refroidissement de la bande. Dans l'état antérieur de l'art, des rouleaux sont utilisés pour soutenir la bande. Il en résulte parfois que la bande subisse un cintrage entre ses points d'appui sur les rouleaux. Pour éviter cela, on utilise des supports dont l'espacement dans la direction transversale à la direction de transport est supérieur à la longueur des supports dans cette direction.
Patent CA-2257473-C (CA)
Title: Roll for a round baler
Inventor: PREECE DAVID C
IPC: A01D82/00
Filed: 1999-01-15
Granted: 2002-11-19
Abstract: A roll for use in defining a baling chamber of a large round baler includes a tubular central body having stub shafts projecting from opposite ends thereof and secured thereto at locations within opposite ends of the tubular body. In one embodiment, a flange is formed integrally with each stub shaft and is welded to a tubular cylindrical extension inserted into a respective end of the tubular body and secured there either by a press fit and/or welding. In a second embodiment, a flange is integral with each tubular extension as well as with each stub shaft, with the flanges of the stub shafts being respectively bolted to the flanges of the tubular extensions.
Patent CA-2267393-C (CA)
Inventor: KURABAYASHI YUTAKA
IPC: C09D11/326
Filed: 1999-03-30
Granted: 2003-08-26
Abstract: Disclosed herein is an ink comprising a pigment and a resin encapsulating a coloring material. The ink can provide an image high in optical density and excellent in rub-off resistance, water fastness and resistance to line marker, and exhibits excellent ejection stability from a recording head when used in ink-jet recording.
Patent CA-2267522-C (CA)
Title: Method and apparatus for switching circuit system including a saturable core device with multiple advantages
Inventor: BASKETTE ROBERT W
IPC: H03K17/0814
Filed: 1999-03-29
Granted: 2005-09-20
Abstract: An energy-efficient power inverter is disclosed which changes direct current provided at a pair of source terminals to alternating current at load terminals. The power inverter comprises a switch device and snubber circuit including a resistance, a capacitance and a saturable core device for selectively removing the resistance from the snubber circuit. At saturation the core device effectively shorts the resistance out of the circuit, and upon coming out of saturation the device effectively reinserts the resistance for improved reduction in power losses during the switch operation.
Patent CA-2268267-C (CA)
Title: Muffling panel
Inventor: ITO SADAKUNI
IPC: G10K11/175
Filed: 1997-10-08
Granted: 2004-05-11
Abstract: This invention provides a muffling panel of a new-type lightweight construction having a function of effectively excluding sounds in low and medium sound ranges and high muffling and sound-absorbing properties in a relatively low frequency band area, and comprising at least two parallel diaphragms, a frame body for fixing of the diaphragms and a vibration transmitting mechanism which links to the diaphragms and can mechanically transmit reverse phase vibration, wherein the vibration transmitting mechanism converts vibration of one of the diaphragms which vibrates when receiving a sound into reverse phase vibration thereof to transmit it to the other of the diaphragms, thus causing the other of the diaphragms to displace inward or outward and vibrate simultaneously with one of the diaphragms according to vibration energy of the above original sound.
Patent CA-2269424-C (CA)
Inventor: MILLER LANE R
IPC: F16F7/10
Filed: 1997-07-10
Granted: 2005-10-18
Abstract: A hybrid active-passive system (20) for reducing noise within a passenger compartment and vibration of a fuselage of a vehicle, such as an aircraft (turboprop, turbofan, or helicopter). The hybrid active-passive system (20) includes, in combination: an active acoustic producer such as a loudspeaker (35), Active Vibration Absorber (AVA) (34), or active absorber assembly (39) for producing antinoise within the compartment (42), and a passive resonant device, such as a passive Tuned Vibration Absorber (TVA) (36), or passive TVA assembly (37) for controlling vibration of the fuselage or structural supports interconnecting the disturbance source (e.g. power plants (26), propellers (28a), gearbox (57), main rotor (28m), tail rotor (28t)) and the fuselage wall (25).
Patent CA-2269831-C (CA)
Title: Ecran electrique
Inventor: TAMAKOSHI DAISUKE
IPC: H05C1/04
Filed: 1998-03-19
Granted: 2002-07-30
Abstract: L'invention concerne un écran électrique (2) comprenant une paire d'électrodes (12 et 12) disposées de manière opposée de part et d'autre d'une conduite d'arrivée d'eau (1) et un dispositif (13) servant à appliquer une impulsion de courant continu à travers les éléments (12 et 12) et vérifiant l'entrée d'un corps vivant dans la conduite (1). Le produit de la valeur de crête du champ électrique créé entre les éléments (12 et 12) et la longueur du corps vivant à vérifier est supérieur à 0,1 V. La durée d'application des impulsions de courant continu tombe dans une plage comprise entre 2 et 200 msec et le coefficient d'utilisation des impulsions de courant continu est inférieur à 0,5.