baber/WOPTO huggingface dataset:
Patent CA-2045149-A1 (CA)
Inventor: CODEN MICHAEL H
IPC: G02B6/28
Filed: 1990-01-11
Abstract: A start-coupler (10) and a method for constructing the star-coupler employing injection molding technology are disclosed. The star-coupler (10) may be constructed from a single injection molded block or a plurality of mating sections (110,120), and is supplied with a plurality of input ports (12, 14, 16, 18) and a plurality of output ports (22, 24, 26, 28).  Each input port as well as each output port is connected to at least one channel.  The channels (13, 15, 17, 19, 23, 25, 27, 29) are filled with a fiber optical core material and the single block or mating sections are fabricated from fiber optical core material. Alternatively, a separate cladding material may be coated on surfaces of the block or mating sections (110,120) which define the channels. Optical signals are guided and confined by the core and cladding material from input ports (12, 14, 16, 18) to output ports (22, 24, 26, 28) along the channels (13, 15, 17, 19, 23, 25, 27, 29).
Patent CA-2045167-A1 (CA)
Inventor: LEWIS THOMAS E
IPC: B41N1/14
Filed: 1990-11-26
Abstract: (57) Abstract A lithographic printing plate that is transformable by spark-discharge techniques so as to change its affinity for ink. The plate features a layered structure including an ink-receptive substrate, a conductive layer and an ink-repellent coating. The ink-repellent coating contains a dispersion of crystalline metal oxide particles that promote straight line travel of the spark to the sur-face of the plate, thereby promoting accurate imaging.
Patent CA-2045592-A1 (CA)
Title: Apparatus for sorting household waste
Inventor: HALGREEN EDWARD H M
IPC: B65F5/00
Filed: 1990-01-29
Abstract: In an apparatus for sorting household waste at source from multistorey dwellings equipped with rubbish chutes a slide (1) is arranged under the chute discharge (3) and is able to rotate on a vertical shaft (2) to direct waste bags dropped down the chute (3) to a preselected skip among a plurality of skips (13) arranged in a circle under the slide.
Patent CA-2049016-A1 (CA)
Title: 2,13-disubstituted ergolines, their production and use in pharmaceutical agents
Inventor: SAUER GERHARD
IPC: A61K31/48
Filed: 1991-01-15
Abstract: Abstract Compounds of formula I and their acid addition salts                      I     in which R2, R6, R13 and X have the meanings mentioned in the application, are described as well as the process for their production and pharmaceutical agents containing these compounds.
Patent CA-2049391-A1 (CA)
Title: Aqueous dispersions of fluorine-containing polymers
Inventor: KALLFASS DIETMAR
IPC: C08F220/22
Filed: 1991-08-16
Abstract: Abstract Aqueous dispersions of fluorine-containing polymers The aqueous solvent-free dispersions contain polymers of monomers of the formulae (1) and (2) H2C=CR-COOC2H4-CnF2n+1       (1) where R is fluorine, chlorine, hydrogen or methyl and n is from 5 to 18, H2C - CRX             (2) where R is hydrogen or methyl and X is a group of the formula  C6H5,  CO2CH2C6H5,  CO2C2H4C6H5,  CN,  CO2CH2C6H4Cl, CO2C6H4-C1-C4-alkyl, CO2C2H2n+1, where n is from 10 to 22, CONHY, where Y is hydrogen, C1-C4-alkyl, C1-C4-hydroxy-alkyl, C1-C4-alkoxy-C1-C4-alkyl or CO2-C1-C20-alkyl, and one or more emulsifiers of the formula (3) CnF2n+1-CRl1R2-CHR3-(CH2)x-NR2O     (3) where R is C1-C4-alkyl or hydroxyethyl, R1 and R2 are identical or different and each is C1-C4-alkyl, hydrogen or fluorine, R3 is hydrogen or C1-C4-alkyl, x is 1, 2 or 3 and n is from 3 to 9, and/or of the formula (4) R1R2R3NO   (4) where R1 and R2 are identical or different and each is C1-C4-alkyl or hydrogen and R3 is C8-C18-alkyl.            The dispersions are used as water and oil repellants for textiles.
Patent CA-2051273-A1 (CA)
Title: Dual diameter needle with a smooth transition
Inventor: PURDY EDMUND R
IPC: A61M5/32
Filed: 1991-09-12
Abstract: A needle (10) cooperates with a tip cover (11) that coaxially fits about the needle (10) and slides axially relative thereto. A thin walled tube (15) of the needle (10) has a shank portion (12) extending from the proximal end (17) toward the distal end (16) and a tip portion (14) extending from the distal end (16) toward the proximal end (17). The tip portion (14) has a diameter ("A") that is larger than the diameter ("B") of the shank portion (12). The needle (10) includes a transition zone (13) between the shank and tip portions wherein the axial distance ("C") of the transition zone (13) is about an order of magnitude greater than the difference in the diameters of the tip and shank portions. The tip portion (14) includes a bevel (18) extending from the distal end (16) toward the transition zone (13) as a sharpened edge (19) to ease insertion. The cover (11) includes a bearing (21) and a tip protecting part (22). The bearing (21) is sized to coaxially fit about the shank portion (12) and slide axially relative thereto. The difference in the diameters of the tip and shank portions is such that the bearing (21) can not slide distally over the transition zone (13). The cover (11) is positioned on the needle (10) to locate the tip protecting part (22) over the sharpened edge (19) when the bearing (21) is at the transition zone (13). The transition zone (13) is shaped frusto conically and is located between the shank and tip portions. The frusto conical shape (20) is at angle relative to the axis ("E") of the needle (10) due to a difference in the first and second diameters thus providing a diametrical imperceptible change. <IMAGE>
Patent CA-2052161-A1 (CA)
Title: Apparatus for controlling steam pressure in a tire during shaping and curing
Inventor: KREPS NORMAN D
IPC: B29C33/04
Filed: 1991-09-24
Abstract: Abstract An apparatus for controlling shaping and curing pressure in a mold.  The apparatus comprises a source of pressurized steam for providing steam to a single inlet of the mold, the steam pressure from the source being equal to or greater than a maximum steam pressure required for shaping and curing of a green tire. The apparatus further comprises a single electrically controlled inlet valve operatively connected between the source of pressurized steam and the mold. The electrically controlled inlet valve is responsive to an electrical valve control signal for controlling the amount of fluid flow between the source of pressurized fluid and the mold over a predetermined time period so as to increase steam pressure and pressure in the mold in accordance with a predetermined desired functional relationship. A single electronically controlled outlet valve is operatively connected between the mold and atmosphere and controllably connected to the electronic control unit.  After curing is complete, the electronic control unit controls  the inlet and outlet valves so as to decrease pressure in the mold in accordance with a predetermined functional relationship over time.
Patent CA-2054196-A1 (CA)
Title: Device for preparing bone cement
Inventor: NILSSON THOMAS
IPC: B01F13/06
Filed: 1990-01-11
Abstract: The present invention relates to an arrangement for the manufacture of bone cement by mixing together its constituent components comprising a mixing cylinder (1) in the form of a tube with a bottom (2) and a lid (3) and inside the mixing cylinder an axially movable agitator (4). The agitator consists of a piston-like agitatordisc (4a), which is perforated by channels (4a1), through which the components of the bone cement are caused to flow during the mixing procedure and an agitator rod (4b) resembling a piston rod operatively connected to the agitator disc (4a) andsupported in the lid (3) in such a way that it is free to slide. The invention is characterized in that the agitator rod (4b) has an axial channel (4b1), which is closed off atthe agitator disc (4a) in such a way that it is capable of being opened. The bottom (2) is so arranged, under the effect of an axial force, as to be displaced like a piston axially in the direction of the lid (3), in conjunction with which the bone cement flows out through the channel (4b1) after it has been opened.
Patent CA-2054506-A1 (CA)
Inventor: ANDERSON DANIEL J
IPC: H01R43/20
Filed: 1991-10-30
Abstract: A modular press block assembly for use in a press tool to mount an electrical connector assembly having a housing and depending terminal pins into a printed circuit board. The modular press block assembly includes a pair of end holders and at least one modular press block positioned between the end holders for engaging the connector assembly and pressing the terminals into the printed circuit board.      The invention contemplates a plurality of the modular press blocks of different sizes to form a set thereof for accommodating a plurality of different sizes of connector assemblies. Complementary interengaging keys are provided between the end holders and the modular press blocks and between the press blocks themselves to define proper positioning of the press blocks between the end holders and to maintain that positioning when the end holders are held against the sides of the press block. Spacer blocks also can be used between adjacent press blocks. Tie rods span the end holders to hold the end holders against the sides of the outermost press blocks. The tie rods are located outside the bounds of the press blocks whereby the press blocks can be located between the end holders without removing the tie rods.
Patent CA-2056776-A1 (CA)
Title: Regenerated, high molecular weight, thermoplastic resins and process for regenerating thermoplastic resins
Inventor: BONK HENRY W
IPC: C08L75/00
Filed: 1991-12-03
Abstract: ABSTRACT     High molecular weight thermoplastic polyurethane resins with narrow molecular weight distribution and good physical properties are prepared by regenerating thermally degraded and/or off-grade thermoplastic polyurethane resins. The regenerated high molecular weight thermoplastic polyurethane resins do not present any processing difficulties inherent to high molecular weight resins.     37,226-F
Patent CA-2057557-A1 (CA)
Inventor: PERETZ MATITYAHU
IPC: F42B3/16
Filed: 1991-12-12
Abstract: ABSTRACT           A detonator comprising a generally tubular housing  and including therewithin a plurality of detonation material  stages, each formed with a recess for receiving a succeeding  stage.
Patent CA-2060032-A1 (CA)
Title: Method and apparatus for forming box-shaped sheet metal ducts
Inventor: MOORE CECIL E
IPC: B21D39/02
Filed: 1992-01-24
Abstract: An improved method and apparatus for forming box-shaped sheet metal ducts with Pittsburgh-type seams.  The improved method is a continuous process in which the  sheet metal  is  fed  from an uncoiler, and after straightening and notching, the leading edge is fed into a single apparatus that performs all of the remaining forming functions.  In this single apparatus, the leading edge of the material is formed into the male portion of the Pittsburgh seam, after which the box is formed and then the female portion of the Pittsburgh seam is formed and the material sheared to complete the box section.  Using this improved method eliminates the moving of separate parts from one station to another, thereby improving the efficiency of the forming operation and the quality of the resulting box section.
Patent CA-2060895-A1 (CA)
Title: Oral composition
Inventor: FUJITA TOMOMI
IPC: A61K8/44
Filed: 1991-05-23
Abstract: An oral composition comprising cetylpyridinium chloride and an N.alpha.-longer acyl basic amino acid lower alkyl ester or a salt thereof promotes the adsorption of cetylpyridinium chloride as a bactericide to the surfaces of teeth, and hence shows excellent prevention of the formation of dental plaque and dental caries.
Patent CA-2061510-A1 (CA)
Title: Biocompatible, low protein adsorption affinity matrix
Inventor: BRAATZ JAMES A
IPC: B01J20/26
Filed: 1992-02-19
Abstract: ABSTRACT OF THE DISCLOSURE Affinity matrices useful for the chromatography and immobilization of biological materials and the method of preparing and using the same are disclosed. The affinity supports are based on hydrated poly-urethane polymers which have been activated to provide a means for covalently attaching a variety of bioaffinity agents.  The hydrated polymer matrices are characterized by their biocompatibility and resistance to nonspecific protein adsorption.  Preferably, the prepolymers used to prepare the hydrated polymers are isocyanate-capped oxyethylene-based diols or polyols, at least 75% of said diols and polyols having a molecular weight of 7000 to about 30,000.
Patent CA-2061988-A1 (CA)
Title: Centrifugal thrower apparatus
Inventor: TAPP ALLAN G
IPC: B65G31/02
Filed: 1992-02-27
Abstract: CENTRIFUGAL THROWER APPARATUS               ABSTRACT OF THE DISCLOSURE      A centrifugal thrower apparatus, which may be used on swivelloaders, swivelpilers, box car loaders, pilers, ship trimmers and the like, capable of maintaining a substantially constant belt tension over a wide range of angles of discharge.       Preferably, a cam is provided to continually adjust the distance between the two sets of pulleys on which the belt is mounted, such that constant or substantially constant belt tension is maintained for different angles of discharge.
Patent CA-2063795-A1 (CA)
Title: Rigid polyurethane foams
Inventor: KESKE DAVID G
IPC: C08G18/50
Filed: 1990-07-20
Abstract: ABSTRACT OF THE DISCLOSURE          A method for preparation of rigid foam is disclosed.   The method comprises mixing at least two components to form a reaction mixture.   The reaction mixture comprises isocyanate, up to about 20 % by weight CHCIF2,  up to about 2 % by weight of water,  and a combination of polyols having an average OH number of from about 300 to about 500 and comprising polyalkoxylated glycerin having an OH number of from about 200 to about 300 and in which the alkoxy groups each have from two to about three carbon atoms.  Related methods and compositions are also disclosed.
Patent CA-2066202-A1 (CA)
Title: Lasers a modulation de puissance
Inventor: BEARDEN ALAN J
IPC: G01B11/30
Filed: 1990-09-27
Abstract: icroscope optique (20), dont le pouvoir de résolution varie du picomètre au nanomètre, pour l'observation unidimensionnelle des caractéristiques de la surface d'un élément cible. Le microscope est muni d'un laser (22) produisant un faisceau de sortie cohérent (24), d'une lentille (36) pour assurer la mise au point du faisceau de sortie sur une cible (38) et d'un photodétecteur (44) pour mesurer la puissance de sortie du faisceau. Le faisceau focalisé se déplace par rapport à la surface de la cible dans des mouvements spécifiques tributaires du temps et de la position. Une partie de la lumière réfléchie par la surface de la cible est retournée dans le laser. Les variations mesurées de la puissance du laser sont ensuite converties en déplacements tributaires de la position, dans la direction du faisceau de sortie. Description d'un appareil de stockage optique des données et d'un disque pour stocker et lire l'information à différents niveaux submicroniques
Patent CA-2066262-A1 (CA)
Inventor: KITANISHI SHINICHIRO
IPC: H04R17/00
Filed: 1991-05-24
Abstract: A piezoelectric sound generator includes a piezoelectric device consisting of a metal diaphragm and a piezoelectric porcelain plate affixed to the diaphragm, a pair of connecting members having resistors connected to the piezoelectric device in series, a leakage magnetic flux coil connected in parallel to the piezoelectric device and the resistors in series, and a resin case.  The resin case encases the piezoelectric device and containing the resistors, and has a spool for retaining the leakage magnetic flux coil.  In addition, the resin case embraces a portion of the connecting members.  This piezoelectric sound generator is manufactured by the steps of:  soldering the resistors to the connecting members; forming the resin case in an insertion mold into which the connecting members have been placed, whereby a portion of the connecting members is embraced by the resin case; and attaching the piezoelectric device and the coil to the resin case.  The sound generator thus obtained is so accommodated by a handset having sound emission holes that a cavity is defined by the piezoelectric device, the resin case and the handset.
Patent CA-2070198-A1 (CA)
Title: Pouch having means to facilitate tear initiation
Inventor: LYMN KIMBERLY J
IPC: B65D33/25
Filed: 1992-06-02
Abstract: ABSTRACT OF THE DISCLOSURE            A hermetic pouch for food products having walls formed of laminated films which comprise one or more layers of  polymeric  material  such  as  nylon,  polyester,  or polyethylene,  and which may further include a layer of metal foil.  The pouch includes a sealed edge portion which is weakened in a predetermined area to facilitate tear initiation.   The weakened area is confined to a minor portion of the seal area extending along one side edge of the pouch,  so that the pouch may readily be opened by tearing inward from the edge through the weakened area. The remainder of the seal area is resistent to such tearing to avoid accidental tear initiation at undesired locations.          In the preferred embodiment, each of the walls includes at least one barrier layer.  The weakened area is preferably made susceptible to tearing by provision of a plurality of discontinuities in at least one layer of at least one of the walls.          In one embodiment of the invention, two weakened areas are provided opposite one another on upper portions of the side edges of the pouch, in proximity to the upper edge of the pouch, whereby the top of the pouch may be torn off from either side.   The pouch may have a reclosable closure extending across its width between its side edges beneath the weakened areas.
Patent CA-2072146-A1 (CA)
Inventor: LANG GARY D
IPC: B65G17/06
Filed: 1990-11-06
Abstract: A freezer (10) includes an insulat-ed enclosure (12) for maintaining low temperatures therewith and a conveyor belt (20) that carries food products throughout the enclosure (12). The con-veyor belt (20) includes a straight-line path section (40) and at least one helical path section (22a) and is driven by verti-cal drive elements (32) carried by a rotat-ing drum (28) about which the conveyor helical path section (22a) is located. Up-on entering a helical path section (22a) from a straight-line path section (40), the conveyor belt (20) undergoes expansion only, with the inner ends of its transverse rods (52) maintaining a precise spacing which allows smooth    interengagement between heads at the inboard ends of the rods (52) and the leading surfaces of the vertical drive elements (32) that are locat-ed along the circumference of the rotat-ing drum (28) which defines the curved helical path (22a). Because of the im-proved arrangement, both an ascending helical path and a descending helical path can be established within a single freezer with both rotating drums (28) simply driven by a single motor (30).
Patent CA-2074658-A1 (CA)
Title: Chewing gum
Inventor: KURIHARA YOSHIE
IPC: A23L27/30
Filed: 1992-07-24
Abstract: ABSTRACT OF THE DISCLOSURE    The chewing gum of the present invention contains a coated material prepared by coating Curculigo latifo-lia fruits, processed Curculigo latifolia fruits or a component containing curculin obtained therefrom with a coating agent.
Patent CA-2075470-A1 (CA)
Title: Wave Power Generating Device
Inventor: THIBAULT MAURICE
IPC: E02B9/08
Filed: 1992-08-06
Abstract: A wave power generating device which utilizes a simple mechanical arrangement to convert wave energy to rotational energy for subsequent conversion to other forms of energy. A main flotation section supports a pair of guides within which a frame is slidable. The frame has a float attached thereto which is responsive to the action of the waves for reciprocating the frame within the guides. A pair of racks movable with the frame and engageable with a pair of one-way drive mechanisms mounted on a power shaft drive the shaft uni-directionally on both the upstroke and the downstroke of the frame. Preferably, the guides are disposed at an oblique angle with respect to the vertical for capitalizing, at least in part, on the kinetic energy of the wave.
Patent CA-2076720-A1 (CA)
Title: Dc termination circuit for 2b1q isdn basic rate physical layer line code protocol
Inventor: EDWARDS JAMES W
IPC: H04M1/253
Filed: 1992-08-24
Abstract: ABSTRACT       A DC termination circuit meeting the 2BlQ basic rate physical layer line code protocol for bilateral switch operation has a trigger circuit for switching the termination circuit from a high impedance to a low impedance circuit.  The trigger circuit is connected in parallel with a switch that when activated effectively shorts the trigger circuit out of the DC termination circuit providing reduced power dissipation.  Activation of the switch connects low impedance, low power dissipation load into the DC termination circuit.  A hold-up current source is provided to maintain circuit operation during momentary losses of a test voltage.  In a further embodiment of the DC termination circuit, a fold-back current limiter is included that further reduces the current through the DC termination circuit when the test voltage exceeds a predetermined value set by the 2BlQ standards.
Patent CA-2076793-A1 (CA)
Title: Methods and reagents for hepatitis c detection
Inventor: RESNICK ROBERT M
IPC: C07K14/18
Filed: 1992-08-25
Abstract: The invention provides reagents, methods and kits for amplifying and detecting U.S., Japan, and HCV-C prototype nucleic acids.Oligonucleotides primers can be used to amplify and detect Hepatitis C virus nucleic acids in a process that involves reverse transcription of the viral genomic RNA to create cDNA and the subsequent amplification of the cDNA by the polymerase chain reaction. Oligonucleotide probes can be used to detect the presence of amplified DNA by hybridization.
Patent CA-2078720-A1 (CA)
Title: Gasoline composition
Inventor: GRAIFF LEONARD B
IPC: C10L1/16
Filed: 1992-09-21
Abstract: The invention provides a gasoline composition comprising a major amount of a gasoline and from 5 ppmw to 1,000 ppmw based on the gasoline composition of a mixture of (a) an oil soluble polyamine selected from the group consisting of (i) a defined aliphatic alkylene polyamine, (ii) a defined Mannich polyamine, and (iii) mixtures of (i) and (ii); and (b) an oil soluble hydrocarbyl poly(oxyalkylene) aminocarbamate having a number average molecular weight in the range from 600 to 10,000 having at least one basic nitrogen atom wherein said hydrocarbyl group contains from 1 to 30 carbon atoms, and wherein the weight ratio of said polyamine (a) to said hydrocarbyl poly(oxyalkylene) aminocarbamate (b) ranges from 3:1 to 1:2; and a gasoline additive concentrate containing said mixture.
Patent CA-2080682-A1 (CA)
Title: Translucent cannula
Inventor: SHICHMAN DANIEL
IPC: A61B17/34
Filed: 1992-10-15
Abstract: Surgical devices from material having a level of absorbance, heat capacity, and thermal diffusivity such that when contacted with an incident or concentrated light at about 500-600nm, 1000-1100nm, and 10000-11000nm the material will not absorb a quantity of energy great enough to make it flash.
Patent CA-2080872-A1 (CA)
Inventor: DEBACQUET PATRICK
IPC: F23D14/14
Filed: 1992-10-19
Abstract: ABREGE Titre : "Brûleur radiant à écran" Au nom de :       L'invention concerne les brûleurs radiants du type comportant au moins une plaque radiante (1) enveloppée par un bandeau périphérique (4) et un écran monté à débattement libre dans une structure porteuse (3) du côté utilisation de cette plaque radiante.       Selon l'invention l'écran est constitué de barreaux isostatiques indépendants en céramique (11), bons conducteurs de la chaleur, formant au moins une nappe de barreaux dans laquelle lesdits barreaux sont disposés sensiblement parallèles et montés avec un jeu dans la structure porteuse (3).       L'invention est destinée aux appareils de chauffage. figure 1.