baber/WOPTO huggingface dataset:
Patent CA-2094029-C (CA)
Title: Molten metal level control method and device for continuous casting
Inventor: ASANO KAZUYA
IPC: B22D11/18
Filed: 1991-09-12
Granted: 1997-04-29
Abstract: In the case or continuous casting or a metallic piece by the use of the continuous casting apparatus provided with a stopper (28) for con-trolling a quantity of molten metal flowing into the mold, fluctuation qw in flow quantity or molten metal, which flows into and out from the mold (18), caused by external disturbance is estimated from at least pre-ceding two values among a measured value L or the level of molten me-tal in the mold (18), a measured value x or command value Pr or the po-sition or said stopper (28), and a measured value V or casting speed. Estimation or flow quantity fluctuation qw is conducted in such steps that, for example, a measured value x of the position or the stopper (28) is inputted to a process model representing fluctuations in molten metal level and time-dependent variations in external disturbance, the differ-ence between an estimated value L or the molten steel level obtained from a model and a measured value L is fed back to said model and both values are made equal to each other, and the difference between es-timated value L or the molten metal level and measured value L ob-tained during the process or the computation is integrated.  Then, an op-erating quantity c of said stopper (28) required for compensating for the estimated flow quantity fluctuation qw (external disturbance) is found and, by operating said stopper (28) on the basis or said quantity c, a le-vel of molten metal is controlled to be constant all the time.
Patent CA-2095808-C (CA)
Title: End load carton
Inventor: MACLEAN CHRIS
IPC: B65D5/468
Filed: 1993-05-07
Granted: 1996-05-28
Abstract: A carton for beverage containers has a top wall, a bottom wall, opposed side walls and end flaps depending from the top, bottom and side walls to form end closures for the carton.  An improvement is disclosed comprising a die cut opening structure in said top wall including a central line of perforations extending from side to side mid-way between the ends of the carton, a punch-in portion  at  at  least  one  end  of  said  central  line  of perforations, and lines of perforation extending from each end of the central line of perforation along the edge of the top wall of the carton to each corner thereof.   The lines of perforations define an opening flap on each side of the top wall.
Patent CA-2098361-C (CA)
Inventor: JEANNERET RENE
IPC: B60L50/15
Filed: 1993-06-14
Granted: 2002-11-12
Abstract: The vehicle drive system (1) has an asynchronous motor (2) mechanically coupled to a wheel (3) of the vehicle, a rechargeable accumulator (4), a first converter (5) interposed between the accumulator (4) and the motor (2) and arranged so as to regulate the electric power supplied to the motor (2) and a generator (8) driven by an internal combustion engine (7), as well as a control circuit (6).        To make it possible to recharge the accumulator (4) under optimum conditions, the system (1) also has a second converter (9) arranged so as to regulate the power supplied by the generator (8) to the accumulator (4) and to the first converter (5).
Patent CA-2099947-C (CA)
Title: Voice directed communications system emloying shared subscriber identifiers
Inventor: HOU MICHAEL M
IPC: H04M3/51
Filed: 1993-07-06
Granted: 1997-06-24
Abstract: The use of subscriber identifiers in a voice directed telecommunications system employing automatic speaker recognition is enhanced such that a group of subscribers may share the same identifier.
Patent CA-2100662-C (CA)
Title: Minimization of facsimile data loss during cellular handoff
Inventor: JAYAPALAN JAY P
IPC: H04N1/32
Filed: 1992-10-02
Granted: 1997-02-04
Abstract: A method is disclosed of reducing data loss during cellular handoff of a mobile among base sites by detecting an end-of-line signal by a fax adapter (13a or 106a) from the transmitting fax, buffering (13b or 106b) subsequent fax information, and transmitting filler bits in place of the EOL and buffered information.
Patent CA-2101597-C (CA)
Inventor: KRAEUTLER BERNARD
IPC: E06B9/84
Filed: 1993-07-29
Granted: 2003-09-09
Abstract: A safety device against rupture of a rotary shaft (1) for preventing the shaft from rotating and for preventing broken portions thereof from falling, the device being particularly suitable for use with a shaft that winds up lifting straps for a raisable curtain or that winds up the curtain itself, the device being characterized in that at least one safety element (3, 5) is placed to retain the shaft to prevent it from falling, and in that the peripheral surface of the shaft and the facing surface of said safety element are provided with means such as portions in relief (2, 6) that co-operate to prevent the shaft from rotating when a portion of the shaft is retained by said safety element due to the shaft rupturing.
Patent CA-2108269-C (CA)
Title: Process for preparation of crude terephthalic acid suitable for reduction to prepare purified terephthalic acid
Inventor: GEE JOHN C
IPC: C07C51/43
Filed: 1992-04-09
Granted: 2003-03-11
Abstract: A process is disclosed for counter-current positive displacement of an aliphatic carboxylic acid of 1 to 5 carbon atoms from a filter cake of an aromatic polycarboxylic acid containing the aliphatic carboxylic acid wherein mother liquor retained by the aromatic polycarboxylic acid has a concentration of the aliphatic carboxylic acid of 5000 ppmw, or less, based upon weight of the aromatic polycarboxylic acid present. This method is useful for the manufacture of crude terephthalic acid which is used after purification for the preparation of polyesters used for the manufacture of fabrics, fibers and plastics bottles.
Patent CA-2108715-C (CA)
Inventor: ROBBINS RODNEY W
IPC: G01F19/00
Filed: 1993-10-19
Granted: 1998-10-06
Abstract: The measuring device has a bowl.  The bowl's capacity is adjusted by a dam structure located within the bowl and attached to a cover structure slidably mounted on the bowl. The slidable cover extends beyond the bowl for use as a handle.  The handle has a downwardly-directed extension which is used to support and stabilize the device when the device rests on a flat surface.  The handle also has a rounded indentation at the junction between the extension and the handle, so as to reinforce the junction and provide means for easily gripping the device.          The sides of the bowl structure are flexible so that they can be squeezed together to release the cover so that the device can easily be disassembled and reassembled for cleaning.  A detent structure is provided to locate the sliding dam at pre-marked measurement locations.  The detent structure is centrally located to permit strengthening of the sliding attachment means and reduce wear.
Patent CA-2111830-C (CA)
Title: Flexible polyamide film
Inventor: KIM HEE-TECK
IPC: C08L77/02
Filed: 1992-06-09
Granted: 2000-01-25
Abstract: The present invention provides flexible nylon films comprising, based on the total weight of the composition, from about 50 to about 95 weight. % of a polyamide and from about 5 to about 50 weight %  of a modified polyolefin having a functional moiety elected from the group consisting of unsaturated polycarboxylic acids and acid anhydrides wherein the tensile modulus of a film formed from such composition is below about 85,000 psi (580 MPa) at 50 %  relative humidity. Preferably, the modifiad polyolefin further comprises vinyl acetate.
Patent CA-2115801-C (CA)
Title: Sweetening syrup based on maltitol, confectionery manufactured using this syrup, and use of an agent for controlling propagation of crystallization in the manufacture of these products
Inventor: RIBADEAU-DUMAS GUILLAUME
IPC: A23L27/30
Filed: 1994-02-16
Granted: 2004-11-30
Abstract: The subject of the invention is the use, as agent capable of controlling propagation of crystallization of maltitol present in a confectionery, of molecules having a molecular weight greater than 1,300. This use applies in particular to the preparation of boiled sugars and semicrystallized items.      The invention also relates to the use, in confectionery, of a sweetening syrup crystallizable to maltitol, having a bimodal composition spectrum and comprising more than 3% of an agent for controlling propagation of crystallization of maltitol having a molecular weight greater than 1,300.
Patent CA-2116399-C (CA)
Title: Golf ball and method for making same
Inventor: SULLIVAN MICHAEL J
IPC: A63B37/00
Filed: 1994-02-24
Granted: 2004-04-20
Abstract: The present invention relates to a golf ball having an increased shelf life, and a method for making the same. The golf ball has a moisture barrier layer surrounding the core. The moisture barrier layer has a low water vapor transmission rate in order to prevent the permeation of moisture into the core. The invention is particularly useful for two and multi-piece solid golf balls, but also can be applied to one-piece and wound golf balls.
Patent CA-2121361-C (CA)
Title: Apparatus and method of saliva collection and verification for dried saliva spot drug and hiv antibody testing
Inventor: SANGHA JANGBIR S
IPC: B01L3/00
Filed: 1992-11-18
Granted: 1997-03-04
Abstract: A method is provided for rapidly determining during a saliva specimen collection procedure the  presence of an amount of saliva, and for verifying that the sample obtained is in fact saliva.   Color indication by dye markers and/or enzymatic activation of color indicators provides an indication that at least a predetermined amount of saliva has been applied to an absorbent and the enzymatic reaction indicates that saliva is contained in the sample collected.  Apparatus for collecting a human saliva sample is provided having a dye indicator for signalling the collection of a predetermined sample quantity.   alternatively,  the apparatus contains a chromogen  capable  of  undergoing  chemical  conversion  upon contact with saliva to produce a color change thereby verifying the presence of saliva as opposed to another fluid.
Patent CA-2129958-C (CA)
Inventor: PEPE ENRICO JAMES
IPC: C07F7/18
Filed: 1993-12-20
Granted: 1998-02-24
Abstract: This invention provides a class of cyclic silylureas and a process of preparing them, which process comprises reacting a cyclosilazane with an isocyanate containing moiety; a class of cyclosilazanes and process for making them, which process comprises heating an aminoalkylalkoxysilane in the presence of a basic catalyst at a temperature less than 100 .degree.C at subatmospheric pressure; and aminoalkylalkoxysilanes and a process for making them, which process comprises reacting a nitrile and a vinylsilane while heating in the presence of a base selected from the group consisting of (a) an alkali metal, (b) alkali metal alkoxide, (c) an alkali metal amide, (d) an alkali metal hydride and (e) mixtures thereof to, form a reaction product which is subsequently hydrogenated.
Patent CA-2132803-C (CA)
Inventor: MARTIN PHILIPPE
IPC: B07C1/04
Filed: 1994-09-23
Granted: 2004-09-14
Abstract: Préhenseur d'objets plats (20) comprenant une courroie, perforée (15) entrainée par des moyens de motorisation, et des moyens de saisie par dépression disposês à l'intérieur de ladite courroie (15), ce préhenseur (20) présentant une face de préhension constituée de ladite courroie (15) en mouvement selon une direction de transfert prédéterminée (D) et devant laquelle une pile d'objets plats est présentée, et des moyens de séparation de prises doubles (24) étant disposés sensiblement en vis à vis d'un bord de sortie de ladite face de préhension (2). Les moyens de saisie par dépression comprennent au moins deux têtes à dépression (21, 22) sensiblement adjacentes et alignées selon la direction de transfert (D), dont l'une (22) est au moins partiellement en vis à vis des moyens de séparation.de prises doubles (24). Utilisation pour le tri automatique du courrier. Voir figure 1.
Patent CA-2133013-C (CA)
Title: Air-fuel ratio control system for internal combustion engines
Inventor: OSHIMA YOSHIKAZU
IPC: F02D45/00
Filed: 1994-09-27
Granted: 1998-11-17
Abstract: An air-fuel ratio control system for an internal combustion engine controls an amount of fuel supplied to the engine.  Operating conditions of the engine, including engine rotational speed and intake pressure, are detected.  Also detected is a valve opening of a recirculation control valve arranged in an exhaust recirculation passage, for controlling recirculation of exhaust gases.  An amount of recirculation gas is determined based on a detected value of the valve opening of the recirculation control valve.  A fuel supply amount is calculated based on the engine rotational speed and the intake pressure.  The fuel supply amount is corrected based on the amount of recirculation gas determined.
Patent CA-2133978-C (CA)
Inventor: RICHARD ROBERT G
IPC: A01N43/20
Filed: 1993-05-04
Granted: 2004-03-09
Abstract: The invention relates to compositions of ethylene oxide and heptafluoropropane and a method of sterilization using same. These environmentally acceptable compositions are chemically stable, minimally segregating, compatible with the objects being sterilized; provide sufficient vapor pressure to deliver the blend to the sterilization chamber, and possess improved flammability suppressant characteristics.
Patent CA-2136237-C (CA)
Title: Method and apparatus for multiplexed oversampled analog to digital modulation
Inventor: MANDL WILLIAM J
IPC: H03M3/02
Filed: 1993-05-17
Granted: 2004-07-20
Abstract: Apparatus for time multiplexed oversampled analog to digital modulation is provided. Embodiments include modulators (60, 300 and 450) and focal plane optical imagers (100, 160 and 200).  Embodiments generally include a plurality of storage elements (70) to hold modulation residues. Multiplexor and demultiplexor structures (72, 74) enable residues to be updated and stored for a plurality of modulated signals. Specific embodiments (500, 600) are shown in CMOS and mixed CMOS-CCD  technologies.
Patent CA-2138330-C (CA)
Inventor: ROWLAND SIMON M
IPC: G02B6/44
Filed: 1994-12-16
Granted: 2001-07-24
Abstract: An optical cable (1, 61) suitable for extending between, and being supported by, towers of an overhead electrical power transmission system, includes one or more electrically semiconductive components (54, 62) that cause the optical cable to have a linear resistance of 0.05 to 10 Mohm m-1, and which exhibit a negative temperature coefficient of resistance. Preferred materials for forming the semiconductive components include carbonaceous fibre tows formed from pyrolised acrylonitrile fibres. The element has a controllable and reproducible resistance for reducing or eliminating dry-band arcing.
Patent CA-2145705-C (CA)
Title: Controlling power and access of wireless devices to base stations which use code division multiple access
Inventor: I CHIH-LIN
IPC: H04J99/00
Filed: 1995-03-28
Granted: 1999-06-15
Abstract: The invention relates to the use of CDMA techniques. Data signals to be transmitted from a plurality of wireless devices are spread across a common bandwidth. The data signals are received by a base station as a composite spread signal.  The base station partially despreads the composite spread signal with unique codes to extract data signals from individual wireless devices. The data rate and quality of service requirements for each wireless device are used to calculate a power factor and a control signal is sent to control the power from a particular wireless device.  In addition, a probability of transmission value is calculated based on an equivalent current load value and an equivalent population value. The probability of transmission value determines whether a particular wireless device is allowed access to an uplink frequency channel.
Patent CA-2145930-C (CA)
Title: Push-fit connector for joining two fluid lines
Inventor: STEINKAMP CHRISTOPH
IPC: F16L37/12
Filed: 1995-03-30
Granted: 1999-06-15
Abstract: A push-fit connector for joining two fluid lines (1, 4), one of which is provided with a retaining rib (2), has a sleeve (5) with radial apertures (12, 13), a latching device (6) with retaining arms (18), which can be pushed into the sleeve (5), provided with hooks (20) for gripping behind the retaining rib (2) and a radially external inclined surface (21). When the sleeve (5) and latching device (6) move apart, the inclined surfaces (21) are compressed against a front edge of an aperture (12) receiving the hook (20) in an axially displaceable manner, so that She hook (20) stays correspondingly more tightly engaged with the retaining rib (2) When the latching device (6) and the inserted fluid line (1) are pulled apart, a radially internal inclined surface (23) of the hook comes into contact with the retaining rib (2) so that the retaining arms (18) are spread apart and make uncoupling possible. In order to facilitate uncoupling, the latching device (6) has an unlatching arm (19) between at least one pair of adjacent retaining arms (18), which arm projects outwards through the aperture (13) in an axially displaceable manner.
Patent CA-2148594-C (CA)
Title: Sliding correlator
Inventor: SAWAHASHI MAMORU
IPC: H04B1/707
Filed: 1994-09-05
Granted: 1999-08-10
Abstract: ABSTRACT OF THE DISCLOSURE     A sliding correlator for establishing initial synchronization to spectrum-despread a received signal into a narrow band signal in a radio receiver in a spread spectrum CDMA system.  It is an object to provide a sliding correlator that can achieve high speed synchronization.  A received signal is stored in a memory circuit (43).  The received signal is read from the memory circuit (43) at a frequency substantially higher than the storing rate of the received signal.  The read received signal is multiplied by a replica of a spreading code sequence by means of a multiplier (45), and the output signal of the multiplier (45) is accumulated by an accumulator (46) over a predetermined time period. The output of the accumulator (46) is decided by a threshold detector (47) whether or not it exceeds a predetermined threshold.  When the output of the threshold detector (47) is less than the threshold, the phase of the spreading code sequence is shifted, and the detection is repeated.  Since the correlation is taken by reading the received signal from the memory circuit (43) at a high speed, the initial synchronization can be established quickly.
Patent CA-2150134-C (CA)
Title: Foldable coffin
Inventor: GILLARD ALEXANDRE
IPC: A61G17/013
Filed: 1994-09-06
Granted: 2001-12-04
Abstract: PCT No. PCT/CH94/00177 Sec. 371 Date May 23, 1995 Sec. 102(e) Date May 23, 1995 PCT Filed Sep. 6, 1994 PCT Pub. No. WO95/08973 PCT Pub. Date Apr. 6, 1995The coffin is made by folding, along preformed lines, a single piece part (10) cut from a plate of corrugated cardboard of which at least one of the faces is covered with a cellulose coating which is tinted and decorated so as to give said face a wooden aspect. First the bottom of the coffin is formed by applying to each other two portions (1', 2') of different panels (1, 2) of the part (10) and by fixing said portions (1', 2') to each other by means of fixing tabs (3'', 4'') inserted into the slots (26a, 26b). The lid is then formed by folding back one portion (1'') of a side panel (1) to the tails (3''', 4''') extending from the extremity panels (3, 4) and by fixing said part (1'') to the tails by means of fixing pieces inserted into pairs of corresponding openings (14a, 34a) and (15a, 45a) and, finally, by folding back a part (2'') of the other side panel (2) onto the part (1'') and by fixing said two parts (1'', 2'') to each other by means of fixing pieces inserted into pairs of corresponding openings (23, 13), (24b, 14b) and (25b, 15b). The disclosed coffin may be used both for burial and incineration purposes, without harmful effect to the environment.
Patent CA-2150297-C (CA)
Title: Procede et transducteur pour emettre des ondes acoustiques a larges bandes et basses frequences en profondeur d'immersion illimitee
Inventor: BOUCHER DIDIER
IPC: B06B3/00
Filed: 1995-05-26
Granted: 2006-12-19
Abstract: Le secteur technique de l'invention est celui de la fabrication de transducteurs électroacoustiques pour l'émission d'ondes acoustiques dans un liquide à basses fréquences, à très grande profondeur dans une bande de fréquences assez large. La présente invention s'applique à tout transducteur comportant au moins un moteur électroacoustique (1) mettant en vibration toute paroi (3) d'émission desdites ondes, et un boîtier (5) creux enfermant ledit moteur (1), et délimitant, avec entre autres ladite paroi vibrante (3), une cavité (7); selon la présente invention, ledit transducteur comporte au moins une ouverture (6) faisant communiquer ladite cavité (7) avec le milieu ambiant (4), au moins une vessie (8) souple occupant au moins une partie du volume de ladite cavité (7), laquelle vessie étant remplie d'un fluide plus compressible (9) que ledit liquide (4).
Patent CA-2151452-C (CA)
Title: Magneto-optical recording medium for realizing super resolution and reproducing method using the medium
Inventor: NISHIMURA NAOKI
IPC: G11B7/007
Filed: 1995-06-09
Granted: 2000-04-18
Abstract: In a magneto-optical recording medium, a first magnetic layer for participating in reproduction of information is laminated on a substrate.  A second magnetic layer for storing information is laminated on the first magnetic layer.  A third magnetic layer having a Curie temperature lower than those of the first and second magnetic layers is disposed between the first magnetic layer and the second magnetic layer.          A magnetization of a region of the first magnetic layer adjacent to a region of the third magnetic layer the temperature of which is above the Curie temperature of the third magnetic layer is aligned with the direction of magnetization of a region around the region of the first magnetic layer.
Patent CA-2152753-C (CA)
Inventor: COHEN RICHMOND R
IPC: A61F13/49
Filed: 1995-06-27
Granted: 2008-06-03
Abstract: A multilayered absorbent structure is disclosed. The absorbent structure has a plurality of absorbent planar regions defined by decreasing pore size with increasing depth into the region. Generally, each planar region has an absorbent layer having relatively large average pore sizes at the top, body facing surface, and relatively small average pore sizes at the bottom, garment facing surface. A subsequent absorbent region has a top body facing surface with an average pore size which is larger than the bottom, garment facing surface of the previous absorbent region. The top surface of each subsequent planar region is in fluid communication with the lower surface of the planar region above.
Patent CA-2155240-C (CA)
Inventor: GENISE THOMAS A
IPC: F16H59/70
Filed: 1995-08-02
Granted: 2000-09-12
Abstract: A system/method for determining approximate vehicular gross combined weight (GCW) for a vehicle equipped with an electronic data link (DL) is provided. GCW is determined, preferably immediately after upshifts of a transmission (10), and requires input signals, preferably from the data link, indicative of engine or drivewheel torque (DL) and indicative of vehicle speed.
Patent CA-2157890-C (CA)
Inventor: CHOW LAURENCE C
IPC: A61K6/838
Filed: 1993-09-15
Granted: 1999-02-23
Abstract: Calcium phosphate composition that are particularly useful and unique as orthopedic and dental cements and remineralizers, as well as methods and kits for their use, and the resulting products are disclosed. The compositions comprise tetracalcium phosphate which has been prepared from a mixture with a calcium to phosphorous ratio of less than 2, or prepared and maintained under substantially anhydrous conditions prior to use or, preferably, both. The novel compositions are converted substantially to hydroxyapatite upon setting, are substantially gradually resorbable and replaced by bone when implanted in contact with living bony tissue, and offer distinct advantages in terms of cement strength, setting time and reliability and other properties.