baber/WOPTO huggingface dataset:
Patent CA-2052471-C (CA)
Title: Rotary-anode type x-ray tube
Inventor: SUGIURA HIROYUKI
IPC: H01J35/10
Filed: 1991-09-30
Granted: 1997-10-07
Abstract: A rotary-anode X-ray tube having a rotor, a stationary shaft, and a sliding bearing connecting the rotor and the stationary shaft, forming a gap filled with liquid metal lubricant. The rotor has a first rotary member supporting an anode target and a second rotary member at which a sliding bearing is installed and which is coaxial with the first rotary member. The first and the second rotary members are connected at that end of the heat conductive path which is remote from the anode target. A heat insulating gap is formed at all fitting portions, but the remote end. Therefore, the temperature rise of the sliding bearing is controlled without using refregerant, and stable rotation of the bearing is secured.
Patent CA-2055274-C (CA)
Title: Optical communication system with a fiber-optic amplifier
Inventor: HEIDEMANN ROLF
IPC: H04B10/291
Filed: 1991-11-13
Granted: 1998-01-27
Abstract: In an optical communication system with a fiber-optic amplifier (10) which includes a wavelength-selective fiber-optic coupler (12) for coupling pump light into the amplifying length of fiber (11), according to the invention, an additional optical signal, e.g., a service-channel signal, is transmitted from the location of the fiber-optic amplifier (10) in one direction or the other by being used to modulate the pump light. Since the pump light is not completely absorbed in the amplifying length of fiber (11), a sufficient portion is transferred from the length of fiber (11) into the optical waveguide (15) of the optical communication system and passes down the optical waveguide to the end point (A) of the communica-tion system. There,it is coupled out and passed to an optical receiver (17) from whose output the transmitted additional signal is recovered by demodulation. To pre-vent the modulation of the pump light from modulating the amplification brought about by the amplifying length of fiber (11), the additional signal is modulated onto a carrier wave of sufficiently high frequency, and the re-sulting signal is used to modulate the pump light.
Patent CA-2055954-C (CA)
Inventor: BIANCHI ALESSANDRO
IPC: H04B10/272
Filed: 1991-11-21
Granted: 1996-12-31
Abstract: In an optical communication system with a passive star coupler, measurement between a station and a central node should not interfere with the operation of other stations. Distance measurement is accomplished by determining the echo delay using a wavelength not being used by other stations. The system uses combined wavelength- and time-division multiplexing. One wavelength is always kept free for measurements if possible. For the measurement, the same data format as that employed during normal operation can be used. Measurement can be continuously repeated unchanged during operation.
Patent CA-2059068-C (CA)
Title: Method for separating a multi-component feed stream using distillation and a controlled freezing zone
Inventor: POTTS WILLIAM A JR
IPC: F25J3/02
Filed: 1992-01-09
Granted: 1995-06-06
Abstract: The invention relates to a method for separating two primary components of a multi-component feed stream (e.g., methane and nitrogen) in the presence of a third, freezable component (e.g., carbon dioxide) having a relative volatility less than that of either primary component.  The inventive process employs both a distillation section and a controlled freezing zone ("CFZ").          The freezable component is allowed to freeze in the CFZ, and the resulting solids are collected at the bottom of the CFZ.  The CFZ also produces a vapor overhead product enriched in one of the primary components and a liquid bottom product enriched in the other primary component.  The solids of the freezable component are melted and mixed with the CFZ liquid bottom product to form a liquid feed stream for the distillation section which operates like a conventional distillation section, while tolerating significantly high concentrations (i.e., >0.1 mole %) of the freezable component without solids formation, at temperatures well below the freezable component's freezing point.
Patent CA-2060208-C (CA)
Inventor: ANTONIADES HARRY N
IPC: A61K38/22
Filed: 1990-04-10
Granted: 2001-02-20
Abstract: On décrit la cicatrisation d'une plaie externe ou la régénération de l'os d'un mammifère par l'administration à celui-ci d'une composition renfermant un facteur de croissance purifié dérivé de thrombocytes ainsi que le facteur de croissance II purifié semblable à l'insuline.
Patent CA-2072032-C (CA)
Title: Beverage package
Inventor: LYNCH FRANCIS JOSEPH
IPC: B65D25/02
Filed: 1992-06-23
Granted: 2002-08-20
Abstract: A beverage package has a sealed can 1 containing beer with gas in solution and a headspace 6 containing gas at a pressure greater than atmospheric. An insert 7 in the beer has a secondary chamber 13 containing gas at a pressure greater than atmospheric and which communicates through an aperture 15 with an intermediate chamber 14 having an open end 12 and containing beer 5A. On opening the container, headspace 6 depressurises causing gas to be ejected from chamber 13 through aperture 15 and gas to be evolved from solution in the beer 5A. Such evolution rises through the beer 5A to emerge into the beer 5 above the chamber opening 12 to form a head of froth. The open end 12 of the chamber 14 can be located in the headspace 6.      The wall 9 of the chamber 14 isolates a major part of the beer in the container from having its gas liberated so that such gas can evolve gradually and naturally to provide sparkle in the beer.
Patent CA-2074237-C (CA)
Inventor: PATTERSON THOMAS C
IPC: E04B1/58
Filed: 1992-07-20
Granted: 2003-07-08
Abstract: A frame that includes first and second tubular members joined at a predetermined angle to each other solely by a bond along a joint between a surface along a portion of a wall of the first member and an edge along at least a portion of the wall of the second member is fabricated by cutting the edge of the wall of the second member at the joint being an a shape that conforms to and abuts the surface of the first member so as to establish and maintain the predetermined angle between the members. The first member is formed with a slot that registers with the edge of the second member, and the second member is formed with an integral tab along part of the edge forming the joint. The tab on the second member is received in close-fitting relation in the slot of the first member so as to establish and maintain a predetermined position of the second member axially and rotationally relative to the first member.
Patent CA-2075588-C (CA)
Title: Power amplifier for a cellular telephone
Inventor: KUNKEL L PETER
IPC: H04B1/04
Filed: 1992-08-07
Granted: 2003-05-27
Abstract: In a cellular telephone of the type capable of operating in both analog and digital modes, a power amplifier is provided which can operate efficiently in both the analog and digital modes of operation. The power amplifier includes a non-linear power amplifier stage and a linear power amplifier stage which are controlled by a switching means. During the analog mode of operation, the switching means causes the non-linear amplifier stage to amplify the RF signals. During the digital mode of operation, the non-linear amplifier amplifies the RF signal when there is a requirement for a relatively low power output. During the digital mode when there is a requirement for a relatively high level output, the switching means causes the non-linear power stage and the linear power stage to amplify the RF signals.
Patent CA-2077039-C (CA)
Title: Steering system for plurality of vehicles
Inventor: DEMONG MAURICE
IPC: B62D13/04
Filed: 1992-08-27
Granted: 1997-05-20
Abstract: A  steering  system  is  provided  for  steering  a plurality of conveyor vehicles connected together in the form of a train.  The vehicle has a first pair of wheels which can be steered by an operator as the train moves.   There are further pairs of steerable wheels connected to the second and subsequent vehicles in the train and supporting same.  There are hydraulic cylinders for steering each of the pairs of steerable wheels on the second and subsequent vehicles and a control mechanism for controlling these cylinders in order to set the steering angle of each further pair.   This control mechanism includes means for determining the current steering angle of the first pair of wheels and generating an electrical signal indicative thereof and means for storing a series of these electrical signals as the train is travelling.  Further means determine the amount of time the wheels in the train have been travelling and there is a calculator for determining the location of each of the further pairs of wheels on the basis of the determined travel time.   A second electrical signal is generated for each further pairs of wheels in order to control its respective hydraulic cylinder and thereby set the steering angle of each pair at the same steering angle that the first pair of wheels had when they were at that location.
Patent CA-2079592-C (CA)
Title: Optical fiber mechanical splice and method for its use
Inventor: LUKAS HELMUT HANS
IPC: G02B6/24
Filed: 1991-05-30
Granted: 1997-04-15
Abstract: An optical fiber mechanical splice comprises a pair of gripping members (110, 140) and a resilient biasing member (150). Each gripping member has a plastically deformable gripping surface (124 142). One of the gripping surfaces has a v-groove (144) for receiving and aligning optical fiber ends. The resilient biasing means acts between the gripping members to resiliently bias the gripping surfaces of the gripping members toward one another. In use of the mechanical splice, the gripping surfaces are urged toward one another with optical fiber ends in abutting alignment in the v-groove. The gripping surfaces plastically deform around the fiber ends to provide a larger area of contact between the fiber ends and the gripping surfaces.
Patent CA-2080959-C (CA)
Title: Water soluble polymers and/or copolymers having enhanced biodegradability and applications thereof
Inventor: EGRAZ JEAN-BERNARD
IPC: A61K8/81
Filed: 1992-10-20
Granted: 2002-06-04
Abstract: Water-soluble polymers and/or copolymers possessing enhanced biodegradability, and their applications are disclosed. Acrylic and/or vinyl polymers and/or copolymers containing acid groups, in which 35% to 90% of the active acid sites are neutralized by magnesium ions, the specific viscosity is at most 25, and biodegradability is enhanced. Their decomposition after 36 days is greater than 50% as measured by the modified Sturm test. These polymers can be used in industries as varied as: paper-making, paints, plastics, petroleum, drilling fluids, water treatment, detergents, cosmetics, textiles, inks, leather, grinding and/or splitting of minerals in water.
Patent CA-2087107-C (CA)
Inventor: DAVENPORT FRANCIS L
IPC: D06M15/13
Filed: 1993-01-12
Granted: 1999-01-19
Abstract: ABSTRACT OF THE DISCLOSURE          A press fabric for use on papermaking and similar machines is of the open-ended variety, and has loops at each end  enabling  it  to  be  closed  into  endless  form  during installation on the machine by means of a pin seam.   The machine-direction (MD) yarns, from which the loops are formed during the flat or endless weaving of the fabric, are composite yarns having a core yarn with a sleeve-like coating.   The coating, either permanent, semi-permanent, or soluble, gives the composite yarn a monofilament-like structure enabling good loop formation and stability.  The use of multifilament yarn as the core yarn provides a fabric having improved elasticity in the machine direction, and a greater degree of resiliency, following the removal of a soluble coating material, than can be obtained using monofilament yarn.
Patent CA-2090475-C (CA)
Inventor: NIKOLAYCZIK HANS
IPC: F16K47/02
Filed: 1991-06-25
Granted: 1999-02-16
Abstract: Un robinet d'eau sanitaire comprend des disques (3, 4, 5) disposés parallèlement dans une cage, dont deux (3, 4) sont fixés de manière à ne pas tourner et dont un troisième (5) est mobile. Les disques présentent des évidements (12, 13) à gradins (14) dont un ou plusieurs sont pourvus d'une denture (15).
Patent CA-2090527-C (CA)
Title: Questionnaire scanning system employing expandable answer areas for efficient scanning and mark detection
Inventor: SCHNEIDER JEFFREY R
IPC: G06K7/14
Filed: 1993-02-26
Granted: 1998-05-12
Abstract: Questionnaires (30) are scanned for answers (marks) handmarked thereon by defining (20) areas of interest which can be expanded (50) in an area of interest pixel map.  An unmarked questionnaire (10) is initialized by scanning to create a pixel map an original image area, with any printed  objects or text on the pace being selected (15) as alignment and reference points, rather than requiring timing marks and special registration marks.  Areas of interest are defined (20) answer area locations with their original pixel data stored in an initial database. Questionnaire pages (30) are scanned for new answer images thereon by aligning both the page and the individual answer areas, and comparing (54) the scanned page with the stored, unmarked page pixel map, thereby removing the pre-printed area from the newly scanned area to detect (56) any new answers.
Patent CA-2095324-C (CA)
Title: Waveguiding structure
Inventor: MAXWELL GRAEME DOUGLAS
IPC: G02B6/42
Filed: 1991-11-05
Granted: 2002-02-05
Abstract: A planar waveguiding device has the cares of the fibre tails (12) directly connected to the path regions of the waveguiding structure. The devices are produced by attaching the fibre tails (l2) before the path layer is deposited. The direct connections are produced when the path layer is sintered.
Patent CA-2095534-C (CA)
Title: Avirulent microbes and uses therefor
Inventor: CURTISS ROY III
IPC: C12N15/01
Filed: 1991-11-08
Granted: 2002-09-17
Abstract: This invention provides immunogenic composition for the immunization of a vertebrate or invertebrate comprising an avirulent derivative of an organism of the genus Salmonella.      The derivatives having a mutation of the cdt gene and, optionally, a mutation in the cya and/or the crp genes. The invention also provides immunogenic compositions for the immunization of a vertebrate and invertebrate comprising an avirulent derivative of the above-type which is capable of expressing a recombinant gene derived from a pathogen of said vertebrate or invertebrate individual to produce an antigen capable of inducing an immune response against said pathogen.      Other embodiments of the invention include methods of preparing immunogenic compositions from these strains, and strains useful in the preparation of the immunogenic,compositions, as well as methods of stimulating the immune system to respond to an immunogenic antigen of Salmonella by administration of the immunogenic compositions.
Patent CA-2105460-C (CA)
Inventor: DELISLE FRANCE
IPC: E06B3/667
Filed: 1993-09-02
Granted: 1996-10-15
Abstract: There is described a spacer for use in connecting the edges of two or more panes of insulating glass, panel walls or the like. It is extruded in one material and is formed with retaining lips (external and internal). The present invention improve actual window systems by having an innovative shape of material providing precise thickness, new technique of spacer frame preparation, novel external lips to increase strength of assembly and possibility to be utilised in most of today multi-pane glazing assembly. Its body is made of Polyvinyl chloride(PVC) with appropriate mineral type filler providing better insulation, ease of production techniques, and low cost of product. Together these innovations gives exceptional insulation, adhesion characteristics and weather resistance when utilised with proper sealant and desiccant material.
Patent CA-2109736-C (CA)
Title: Medical appliance
Inventor: FOX ROGER HARRINGTON
IPC: A61H23/04
Filed: 1993-11-23
Granted: 2004-08-10
Abstract: Apparatus for therapeutically or prophylactically treating a diagnosed or potential deep-vein thrombosis involves intermittent application of tourniquet action to the leg at a location preferably close to the ankle, i.e., at the distal-calf region of the leg, in time-coordinated relation to artificially stimulated foot-pump action; the level of tourniquet action is such as to reduce the availability of superficial veins to carry the venous-return flow that is stimulated by foot-pump action, and the level of tourniquet action is also insufficient to materially affect access to deep-veins which are the primary target of therapeutic or prophylactic treatment.      In a modification, the sequencing of tourniquet and foot-pump action is changed to enhance the priming of blood in the plantar veins of a foot which must remain elevated above the heart level of a patient confined to bed, whereby circulation can be more effectively stimulated by foot-pump action.
Patent CA-2115592-C (CA)
Title: Production of glucomannan sponge
Inventor: KIMURA KUMIKO
IPC: C08J9/28
Filed: 1994-02-14
Granted: 1998-09-22
Abstract: A spongy material is produced by the steps of suspending a suitable quantity of finely divided particles of  a  thermoreversible  gel  in  an aqueous  solution  of glucomannan-rich flour, adding an alkali to the suspension, allowing  the  suspension  to  gel,  freezing  the  gelled suspension, thawing and leaching the same with hot water while leaving a skeleton of a water-insoluble, thermally irreversible gel matrix.  After drying, a spongy material having a relatively uniform cellular texture and a pleasant touch feeling to the skin is obtained.
Patent CA-2117486-C (CA)
Title: Dendritic macromolecule, process for preparation thereof and use thereof
Inventor: HULT ANDERS
IPC: C09J167/00
Filed: 1993-02-24
Granted: 1998-09-22
Abstract: The invention relates to a dendritic macromolecule of the polyester type, which macromolecule is composed of a central initiator molecule or initiator polymer having one or more reactive groups (A), which groups (A) under formation of an initial tree structure are bonded to reactive groups (B) of a monomeric chain extender holding the two reactive groups (A) and (B). The tree structure is potentially extended and further branched from the initiator molecule or initiator polymer by an addition of further molecules of a monomeric chain extender by means of bonding between the reactive groups (A) and (B) thereof and is possibly further extended by a reaction with a chain stopper. The invention also comprises a process for preparation of the dendritic macromolecule.
Patent CA-2125606-C (CA)
Inventor: ZBIKOWSKI MARK
IPC: G06F12/00
Filed: 1994-06-10
Granted: 2002-05-21
Abstract: A file system provides a hierarchical approach to storage of file data. Logically contiguous bytes of file data are stored in stream data structures, and streams which hold related file data are stored in a variable sized onode data structures on disk. The variable-sized onode data structures are stored in fixed sized buckets, and the buckets are organized into a variable sized array. Thus, the file system provides a combination of variable-sized storage with fixed-sized storage to provide a very efficient approach to storing file data. In addition, indexes may be provided within the structures to allow quick access to onodes and streams.
Patent CA-2129004-C (CA)
Title: Lock assembly for wearable structure
Inventor: GOETH FREDERICK C
IPC: E02F3/60
Filed: 1993-02-17
Granted: 1997-12-16
Abstract: A lock assembly for a surface (24) subject to abrasive wear including a base element (29, 129, 229, 329) and a wear element (30, 130, 230, 330) coupled either by conforming T-shaped elements (31, 32, 131, 132, 231,232) or dovetails (331, 332) and which includes a lock (40, 140, 240, 340) resiliently urged against an integral keeper (46, 146, 246, 346) in the base or wear element.
Patent CA-2138103-C (CA)
Inventor: GUENTHER STEPHAN
IPC: G07B17/00
Filed: 1994-12-14
Granted: 1998-02-03
Abstract: In a method for the operation of a postage meter machine jointly by a plurality of users, at least one message is allocated to each user and has at least one identifier that identifies the respective user. A control unit in the machine is supplied with information about the identifier. The control unit compares the information to the identifier and automatically allocates the message to the appertaining user given agreement.
Patent CA-2143802-C (CA)
Title: Track noise suppression
Inventor: LECOURS GAETAN
IPC: B62D55/24
Filed: 1995-03-02
Granted: 2006-05-23
Abstract: The noise generated by a snowmobile track in operation can be reduced and attenuated by arranging for the track elements such as the drive lugs and ground-engaging lugs to have a degree of non-uniformity in their repeating pattern and thus to avoid the generation of peak noise levels at particular frequencies.
Patent CA-2144023-C (CA)
Inventor: VICK JAMES D JR
IPC: E21B33/03
Filed: 1995-03-06
Granted: 1998-09-29
Abstract: A wellhead plug assembly having one or more plugs for plugging segments of a wellhead bore through which access during completion and production procedures is gained. Each plug has a shortened length that is achieved by positioning connections between several of the components of the plug assembly radially beneath the anchoring and sealing means. By placing the connections radially inward to, and in tandem with, the sealing and or anchoring means, the overall length of a given plug may be shortened to less than eleven inches for plugs to be used in conduits having internal diameters greater than one and one-half inch. Furthermore, the tandem orientation allows plug designs in which a majority of the overall longitudinal length of the plug comprises the collective longitudinal lengths of the seal and anchor means.
Patent CA-2150363-C (CA)
Title: Method for reducing atmospheric pollution
Inventor: EYAL AHARON MEIR
IPC: B01D53/62
Filed: 1993-11-23
Granted: 2001-05-08
Abstract: The invention provides a method for reducing atmospheric pollution caused by a pollutant selected from the group consisting of CO2, SO2 and a mixture thereof, the pollutant being contained in industrial gases being emitted to the atmosphere, through the conversion of CO2 to calcium carbonate and the conversion of SO2 to calcium sulfite using conventionally available calcium salt-containing reactant; said method comprising reacting the pollutant-containing gas, prior to the venting thereof to the atmosphere, with an alkali base and an aqueous liquor, whereby the pollutant reacts with the base and transfers to the liquor, and the resulting gas vented to the atmosphere has a reduced pollutant content; and roacting the pollutant-loaded liquor with a calcium salt-containing reactant to form calcium carbonate and calcium sulfite respectively, with the co-formation of a commercially utilizable salt containing an anion from the calcium salt reactant and a cation from the alkali base.
Patent CA-2167953-C (CA)
Inventor: KITAMURA TAKANORI
IPC: C08F210/02
Filed: 1992-01-15
Granted: 1999-01-19
Abstract: A process  is  described  for producing ethylene-vinyl alcohol copolymer by saponification of an ethylene-vinyl ester copolymer, wherein the saponification is carried out in a liquid phase with dialkyl sulfoxide being used as solvent.  A solution of  the  ethylene-vinyl  alcohol  copolymer may be contacted with a solvent which is a non-solvent  for the copolymer or a mixed solvent containing at least 20% by weight of the non-solvent, to form the shaped articles.  The shape forming may be by a wet or dry-jet-wet system and the shapes are typically hollow fibers, films, sheets, granules, strands, spheres, etc.
Patent CA-2172598-C (CA)
Title: Hook-mounted hinge mechanism for oven doors
Inventor: MCKINNEY MICHAEL
IPC: F23M7/00
Filed: 1996-03-25
Granted: 2001-09-04
Abstract: A door hinge mechanism is easily fastened to an oven door at its top and bottom, for example, using a hook-like engagement, and providing along the length of the oven door sidewalls rigid structural members and support, and thermal isolation of the oven door sidewalls from the oven door interior.