baber/WOPTO huggingface dataset:
Patent CA-2097089-C (CA)
Title: Torque transfer apparatus
Inventor: SIBILLE MARK
IPC: E21B19/16
Filed: 1990-11-26
Granted: 1998-02-10
Abstract: An apparatus for making up of breaking out of two members having mating threaded connections, such as pipe joints or bolts for avoiding undesirable transverse forces relative to the two members during tightening (or loosening), thereby insuring the connection is made up (or broken out) by essentially pure torque loads. A power-driven lead tong rotatingly drives a first threaded member out of its axis. A back-up tong secures a second threaded member against axial rotation in response to the rotation of the first member. An interconnecting frame and isolation apparatus adapts the lead tong to the back-up tong in such a manner that their relative tendencies to rotate about the threaded members, in opposite directions, counteract each other. The interconnecting frame and isolation apparatus allowing relative movement along x, y and z axis between the lead tong and the back-up tong, but which does not allow relative rotation about the z axis, the interconnecting frame prevents undesirable transverse forces from occuring, between the lead tong and the back-up tong in response to the driving torque of the lead tong. The interconnecting frame and isolation apparatus eliminates transverse forces which would otherwise develop because of irregularities of the threaded members. A load cell cooperating with the isolation apparatus, internally disposed in the interconnecting frame, cooperates between the isolation apparatus and the tong housing to produce a torque measurement without inducing transverse forces on the threaded members.
Patent CA-2100901-C (CA)
Inventor: WANG ROBERT CHUENLIN
IPC: H04B7/26
Filed: 1993-07-20
Granted: 1998-07-28
Abstract: The present invention is directed to a cellular telephone cell site base station (10) having a single radio transmitter (40) and radio receiver (14) for transmitting and receiving, respectively, multiplexed frequency-modulated (FM) signals. A filter bank synthesizer (36), associated with the transmitter, multiplexes individual signals for transmission by the transmitter by exponentially modulating the signals to higher frequency bands followed by low-pass filtering and interpolation using discrete Fourier transform techniques. A filter bank analyzer (18), associated with the receiver, demultiplexes multiplexed FM signals received by the receiver by exponentially modulating each signal to its original spectral position followed by low-pass filtering and decimation, using discrete Fourier transform techniques.
Patent CA-2101679-C (CA)
Title: Plastic flexible grinding stone
Inventor: KODATE TADAO
IPC: B24D15/04
Filed: 1993-07-30
Granted: 1998-03-31
Abstract: The plastic flexible grinding stone according to  the present invention comprises a plastic flexible material having mixed therewith a powder synthetic detergent and an abrasive such as silica sand and calcium carbonate composed of grains from 3 to 50µ m in diameter, and is capable of removing simultaneously minute protrusions and stain from coated surfaces such as of rolling stocks.
Patent CA-2103487-C (CA)
Title: Delayed-release form for pharmaceutical active compounds
Inventor: HARTH KLAUS
IPC: A61K9/28
Filed: 1993-11-19
Granted: 2003-10-28
Abstract: Abstract of the disclosure: A novel delayed-release form for pharmaceutical active compounds, characterized by a core containing the active compound and a diffusion-inhibiting, adhesive coating layer having a thickness in the range from 0.01 to 10 µm, consisting of a chemical network which has been applied to the support in a plasma-assisted chemical deposition process, and a process for its production are described.
Patent CA-2108064-C (CA)
Inventor: REGNIER GILBERT
IPC: C07D277/20
Filed: 1993-10-08
Granted: 2001-10-23
Abstract: New thiazolidinedione compounds of formula: <IMAGE> in which Ar, A, X and B are as defined in the description, their enantiomers, diastereoisomers and pharmaceutically acceptable acid addition salts. They can be used in therapeutics, especially in the treatment of insulin-resistant states and/or of non-insulinopenic diabetes, possibly in association with hypertension (high blood pressure).
Patent CA-2108861-C (CA)
Inventor: DRNEVICH RAYMOND FRANCIS
IPC: B01J19/00
Filed: 1993-10-20
Granted: 1997-06-10
Abstract: The present invention relates to processes and apparatus for mixing oxidizable reactants with oxidant and/or oxidizing oxidizable reactants.  Through using particular mixing and/or oxidizing arrangements, the risk of flammable or explosive reactions can be significantly reduced or prevented.  When ammonia is used as the reactant, nitric acid can be obtained.
Patent CA-2116195-C (CA)
Title: Decolorization of alkanolamines and alkyleneamines
Inventor: GIBSON CHARLES ARNOLD
IPC: B01J27/053
Filed: 1994-02-22
Granted: 1999-12-21
Abstract: Color-containing alkanolamines or alkyleneamines, having color numbers of up to 300 PtCo or higher, can be treated with inorganic solid acidic catalysts. Inorganic support materials having bonded inorganic acid functionalities may be used as the inorganic solid acidic catalysts. In the presence of water, these inorganic solid acidic catalysts produce decolorized alkanolamines or alkyleneamines having color numbers of 20 PtCo or less. The process of decolorization can be carried out in batch or continuous anode processes thus providing low cost, high quality and high purity end products.
Patent CA-2130479-C (CA)
Title: Lower resolution hdtv receivers
Inventor: NG SHEAU-BAO
IPC: H04N19/50
Filed: 1993-01-13
Granted: 2002-10-08
Abstract: A receiver for receiving block coded HDTV compressed digital video signals decimates (304, 310, 311) the data in each block to produce NTSC resolution images but with a significant savings in receiver hardware.
Patent CA-2132588-C (CA)
Inventor: TAMURA ITSURO
IPC: A61B5/04
Filed: 1994-09-21
Granted: 1999-04-27
Abstract: A biological information-measuring apparatus which is situated in a shielded room and includes measuring means for measuring biological information of a subject arranged and supported between a pair of supporting pillars of a double housing type support, wherein H-cross section members are combined to form a lattice-like supporting frame, and the bottoms of the supporting pillars are anchored to the members forming the supporting frame.
Patent CA-2136445-C (CA)
Title: Inflatable seat
Inventor: JEANS EDWARD LEWIS
IPC: A61G7/10
Filed: 1993-05-27
Granted: 2005-03-15
Abstract: A seating device which comprises an inflatable seat (4) and an inflating means which provides for the controlled inflation and deflation of the seat. The seat (4) comprises a chamber defined by top, bottom and side walls (12, 13) which is connected to the inflation means. The inflation means comprises a motorised fan unit (20) and a control valve (6) connected by a supply pipe (10) to the seat (4). The device is inflatable from a deflated position on the base of a support surface such as a bath to an inflated position adjacent the rim of the bath such that a person sitting thereon can easily enter or exit the bath to bathe. The device is of particular use for handicapped or elderly persons and does not require mechanical actuation means and has sufficient inflatable characteristic to enable the seat to remain in a fixed position in relation to the bath.
Patent CA-2141874-C (CA)
Inventor: KAYAERT ANDRE FIRMIN
IPC: C05C1/02
Filed: 1993-08-05
Granted: 2003-04-22
Abstract: The invention is directed to a process for the production of urea granules from a melt or solution of urea by spraying the urea melt or solution, which also contains as granulation additive formaldehyde, methylolureum, urea-formaldehyde preconden-sates, or hexamethylenetetramine, in the form of very fine droplets into a fluidized bed of urea particles, in which process the granulation additive is added prior to the granulation at such a stage, that the mixture of the said granulation additive and the urea melt or solution has a contact time of at least 20 s, but not more than 20 min.
Patent CA-2143873-C (CA)
Title: Implantable access devices
Inventor: ENSMINGER WILLIAM D
IPC: A61M39/06
Filed: 1993-09-02
Granted: 1999-11-16
Abstract: An access port (10) for implanting within the body of a patient for providing repeated access to specific tissue within the patient and communicating with the tissue by an implanted internal catheter.  The access ports in accordance with this invention include a housing (12) having a funnel shaped inlet orifice (14) leading to a reduced diameter guide passageway (18). An articulating valve which may take various forms including leaflet-type valves (38, 40) or self-collapsing tubular valves are placed in line with the access port housing. An external filament (48) such as a needle, guide wire, optical fiber, or external catheter can be introduced into the access device and fed through the housing to penetrate the articulating valve. This system allows the introduction of therapeutic agents, the removal of fluids from the body, or the introduction of sensing or articulating devices to specific sites within the patient.
Patent CA-2149333-C (CA)
Title: Eck receptor ligands
Inventor: BARTLEY TIMOTHY D
IPC: G01N33/566
Filed: 1993-11-12
Granted: 2002-01-22
Abstract: Ligands which bind to the eck receptor are disclosed. More particularly, polypeptides which bind specifically to the eck re-ceptor eck receptor binding proteins or EBPs) and DNA sequences encoding said polypeptides are disclosed. Methods of treat-ment using eck receptor ligands and soluble eck receptor and disclosed, as are pharmaceutical compositions containing same. A rapid and sensitive method for the detection of receptor binding activity in crude samples is provided.
Patent CA-2150449-C (CA)
Title: Antenne acoustique passive absorbante
Inventor: VACHER PATRICK
IPC: G10K11/00
Filed: 1995-05-29
Granted: 2005-02-08
Abstract: L'invention concerne les antennes acoustiques passives absorbantes destinées à être rapportées sur la coque des bateaux. Elles consiste à réaliser cette antenne sous la forme d'un empilement de couches (204-209) en polyuréthanne de différentes compositions pour obtenir des caractéristiques absorbantes et/ou réflectrices de manière à minimiser les signaux parasites reçus par les hydrophones (207) et à absorber au maximum les signaux provenant des sonars actifs extérieurs au bâtiment sur lequel sont placées ces antennes. Elle permet de réaliser des antennes conformes de faible épaisseur et de faible coût.
Patent CA-2152990-C (CA)
Title: Rod end bearing for aircraft use
Inventor: DEZZANI MICHAEL M
IPC: F16C9/04
Filed: 1995-06-29
Granted: 2005-11-01
Abstract: The ball raceways on the inside surface of the outer ring of a rod end bearing to be used on aircraft is hardened by a nitriding process while at the same time leaving the remainder of the ring soft and ductile to resist fracture.
Patent CA-2159128-C (CA)
Inventor: BULGER MARK L
IPC: E06B3/663
Filed: 1995-09-26
Granted: 1999-06-08
Abstract: A multi-sheet glazing unit has a pair of outer glass sheets spaced from one another and secured to a spacer frame having a generally U-shaped cross section defined by outer legs secured to a base.  The recess of a sheet retaining member is mounted on peripheral edge portions of an intermediate glass sheet.  The intermediate glass sheet and sheet retaining member are mounted within the outer legs of the spacer frame to position the intermediate sheet between and spaced from the outer sheets.  A method of making multi-sheet units is also disclosed.
Patent CA-2164942-C (CA)
Inventor: JOINER JOHN R
IPC: D21F5/04
Filed: 1994-12-12
Granted: 1999-04-13
Abstract: Apparatus for drying a wet paper web during manufacturing of the paper web. The apparatus allows the moisture profile of the web to be carefully controlled and adjusted. The apparatus includes a rotatable dryer drum (10) and a hood (14) partially encompassing the rotatable dryer drum (10). A plurality of elongated heater nozzle boxes (16) are disposed in the hood (14) interior and extend across the dryer drum (10) in the cross-machine direction, the elongated heater nozzle boxes (16) being arrayed side-by-side in the machine direction. A plurality of gas burners (30) is located in each of the nozzle box interiors and arranged side-by-side along the length of the nozzle box interiors of the heater nozzle boxes (16).
Patent CA-2170066-C (CA)
Title: Amplifier with pixel voltage compensation for a display
Inventor: DINGWALL ANDREW GORDON FRANCIS
IPC: H04N5/66
Filed: 1996-02-22
Granted: 2007-06-12
Abstract: A liquid crystal display includes pixels that are arranged in columns and rows. Data line drivers responsive to a video signal develop output signals in data lines that correspond with the columns, respectively. An adjustment data line driver is provided. The adjustment data line driver is responsive to a reference DC constant signal at a mid-range of the video signal. An output signal of the adjustment data line driver is coupled to the other data line drivers in a negative feedback manner to compensate for output signal variations in the other data line drivers.
Patent CA-2171854-C (CA)
Title: Apparatus and method for temporarily plugging a tubular
Inventor: SNIDER PHILIP M
IPC: E21B34/06
Filed: 1995-07-28
Granted: 1999-12-14
Abstract: An apparatus and method for controlling the pressure at which a fluid is introduced into a well penetrating a subterranean formation. The apparatus comprises a blow out sub having a sealed chamber (34) between two plugs (18, 26).  The chamber is filled with a fluid at a known pressure.  Thus, the pressure required to release the first plug (18) is independent of the pressure in the well below the sub.  The sub is attached to a tubular and positioned within the well. The first plug is then released upon application of a predetermined pressure fluid pressure, and the second plug (26) is released upon application of a lesser pressure.  The blow out sub may additionally comprise a tube (152) forming a channel through the first plug (118), the chamber (134), and the second plug (126), with a means (154, 156) for controlling fluid flow through the channel. A first fluid may be introduced into the well via the channel prior to releasing the first plug (118).
Patent CA-2178367-C (CA)
Title: Method for inhibiting hydrate formation
Inventor: COLLE KARLA SCHALL
IPC: C10L3/10
Filed: 1996-06-06
Granted: 2001-04-17
Abstract: A method for inhibiting the formation of clathrate hydrates in a fluid having hydrate-forming constituents is disclosed. More specifically, the method can be used in treating a petroleum fluid stream such as natural gas conveyed in a pipe to inhibit the formation of a hydrate restriction in the pipe. The hydrate inhibitor used for practicing the method is selected from the family of substantially water solublecopolymers formed from N-methyl-N-vinylacetamide (VIMA) and one of three comonomers, vinylpyrrolidone (VP), vinylpiperidone (VPip), or vinylcaprolactam (VCap). VIMA/VCap is the preferred copolymer. These copolymers may be used alone or in combination with each other or other hydrate inhibitors. Preferably, a solvent, such as water, brine, alcohol, or mixtures thereof, is used to produce an inhibitor solution or mixture to facilitate treatment of the petroleum fluid stream.
Patent CA-2179040-C (CA)
Title: Percutaneously administrable patch preparation
Inventor: YAMAGUCHI HISASHI
IPC: A61K9/70
Filed: 1993-12-14
Granted: 2004-08-10
Abstract: A percutaneous or permucosal patch drug preparation which comprises: (1) a backing layer impermeable to a drug component, (2) a drug storage layer which holds the drug component therein and is situated under the central portion of the backing layer, (3) a protective film which is impermeable to the drug component, has notches and is situated under the drug storage layer and the peripheral portion of the backing layer, (4) a pressure-sensitive adhesive layer which is situated under the protective film, and (5) a releasable liner layer which is impermeable to the drug component and situated under the pressure- sensitive adhesive layer.
Patent CA-2189786-C (CA)
Title: Drive shear device for rotary cutter unit
Inventor: WALTERS JAMES C
IPC: A01D34/66
Filed: 1996-11-06
Granted: 1999-11-02
Abstract: Each knife-carrying disk of a rotary cutterbar has a hub connected to a drive shaft through means of a shear device. In a first embodiment of the invention, the shear device is in the form of either a collar or a clamping member having internal splines received on a splined upper end of the drive shaft and having shearable cylindrical drive lugs engaged with complementary shaped openings provided in anupper surface of the disk hub. In another embodiment of the invention, the sheardevice is in the form of a ring-like shear insert having shearable inner splinesreceived on the splined upper end of the drive shaft and having outer splines engaged with a splined mounting hole of the disk hub.
Patent CA-2192340-C (CA)
Title: Procede de determination du profil de densite d'un materiau en forme de plaque
Inventor: DUEHOLM STEN
IPC: G01N23/16
Filed: 1995-06-15
Granted: 2001-02-13
Abstract: L'invention concerne un procédé permettant de déterminer en ligne et de façon non destructive le profil de densité d'un matériau en forme de plaque au moyen de rayons X ou de rayons gamma provenant d'une source placée sur un côté de la plaque, la densité du matériau variant de manière discrète et continue à travers l'épaisseur de la plaque, tandis que la densité à une profondeur spécifique de la plaque est supposée constante, par exemple dans les plaques à base de bois. Deux détecteurs sont placés de l'autre côté de la plaque, un détecteur mesurant dans le sens d'émission de la source, l'autre mesurant dans l'autre sens et étant mobile par rapport à la plaque. La valeur mesurée par le second détecteur est corrigée au moyen de la valeur mesurée par le premier détecteur. En choisissant de façon appropriée le sens d'émission et le sens de détection, il est possible d'effectuer une mesure de la densité dans un volume de mesure spécifique en divisant simplement la valeur mesurée par le second détecteur par la valeur mesurée par le premier détecteur. Ainsi, l'atténuation du rayonnement dans le matériau est exclue. L'angle d'incidence doit être pratiquement identique à l'angle de réflexion.
Patent CA-2196810-C (CA)
Inventor: HEWLETT WILLIAM E
IPC: F21V9/40
Filed: 1995-07-14
Granted: 2008-06-03
Abstract: A flexible medium (520) for a scrolling color changer and method of making thereof. The medium (520) is made by applying an ink (500, 502, 506) using a Meyer Rod which has varying cell lengths along its length.  This leaves varying size cells of ink (500, 502, 506) at different locations along the length of the medium (520). The ink has special characteristics whereby its evaporation rate and viscosity are carefully controlled. The viscosity is such that an amount of levelling (508) will occur, will be equal to the distance between any cells, but that cell to cell levelling will not, in general, occur.
Patent CA-2198519-C (CA)
Inventor: AUBREY LEONARD S
IPC: C22B9/02
Filed: 1997-02-26
Granted: 2006-10-24
Abstract: There is provided a dual stage ceramic foam molten metal filtration system and method. Coarse and fine filters are mounted adjacent to one another in a molten metal flow path. A convection preheat apparatus provides preheat for both filters.      A vent structure is included to vent air which may be trapped in a gap which is formed between the two filters.
Patent CA-2200505-C (CA)
Inventor: HIRAKAWA KIYOSHI
IPC: D01F8/10
Filed: 1997-03-20
Granted: 2004-08-10
Abstract: A fiber of ethylene-vinyl alcohol copolymer having a specific degree of crosslinking which is obtained by acetal decomposition regeneration reaction with a specific crosslinking agent. Because of its effective degree of crosslinking, this fiber has a greatly improved resistance to steam ironing and finds use for garments and living material.
Patent CA-2208619-C (CA)
Inventor: SATO HISAO
IPC: B42F1/04
Filed: 1997-06-23
Granted: 2006-05-02
Abstract: A clip made from a band-like metal plate having spring characteristics, comprising: a back portion formed at a center portion of said metal plate in its longitudinal direction so as to have a width in said longitudinal direction corresponding to a maximum clipping thickness of said clip; a pair of abutment portions formed by bending said band-like metal plate in the same direction at longitudinally opposite ends of said back portion so that longitudinal opposite ends of said respective abutment portions form abutting edges which abut against each other for holding edge portions of sheet-like members to be clipped between said abutting edges of said abutment portions; and at least three bent portions for giving an elastic force to said abutment portions.
Patent CA-2210310-C (CA)
Inventor: WORTHEN W G
IPC: A61B/
Filed: 1995-01-17
Granted: 2005-09-13
Abstract: A cervical tissue sampling device (10) to allow women to collect tissue samples at home for transmission to a laboratory by mail or other means includes a cylindrical barrel (12) having an open circular front end (14) and an open circular rear end terminating in a radially extending irregularly shaped finger grip flange (16). A plunger assembly (33) slidably received within the barrel (12) includes a circular brush (34) and surrounding circular sponge (40) for collecting cervical tissue and mucus. The brush (34) and sponge (40) collection assembly is detachably secured to the plunger (33) shaft by a quick release connection (52, 54, 56, 58, 60, 62).      In use, the barrel (12) is inserted by a female into her vagina (v) with the sponge (40) and brush (34) disposed in a retracted condition within the barrel (12). After insertion, the plunger (33) is moved to an extended condition and rotated to collect tissue and mucus samples on the brush (34) and sponge (40). After the samples have been collected, the sponge (40) and brush (34) are detached from the plunger shaft (33) and mailed in a sealed container to a laboratory for analysis.
Patent CA-2210698-C (CA)
Title: Olive de suspension pour colonne de production de deviation et joint de tige unitaire activable
Inventor: REED LEHMAN THOREN
IPC: E21B33/047
Filed: 1996-01-16
Granted: 2001-10-02
Abstract: L'invention concerne une olive de suspension unitaire (30) de déviation pour colonne de production, qui se fixe sur une tête de puits (47), un déflecteur d'écoulement de la verticale à l'horizontale ou vice-versa, un dispotitif de fixation (38) destiné à un bouchon d'étanchéité vertical amovible (40), et un joint de tige vertical (130) de secours activable et récupérable. L'olive de suspension (30) pour colonne de production simplifie l'achèvement de la tête de puits en éliminant la présence de toutes les vannes sur la colonne de forage verticale, et elle (30) peut aussi traverser un bloc d'obturation qui est fixé à une tête de puits (47). Un joint de tige vertical (130) activable et récupérable, que l'on peut monter dans le passage vertical (55) de cette olive de suspension (30), constitue un joint de tige de secours (130) destiné  aux pompes dans une tête de puits (47) achevée et conçue pour le pompage de fond, et il peut à la fois aller et venir et tourner.