baber/WOPTO huggingface dataset:
Patent CA-2007693-A1 (CA)
Inventor: NISHIMURA AKIRA
IPC: G02B6/24
Filed: 1990-01-12
Abstract: An apparatus for coupling two optical elements comprises a plurality of optical fibers, a plurality of first substrates stacked in a first direction, and a plurality of second substrates stacked in a second direction perpendicular to the first direction.  Each optical fiber is fixed to one of the first substrates and a corresponding one of the second substrates such that none of the optical fibers cross over one another.
Patent CA-2010500-A1 (CA)
Inventor: PICHETTE CAROLD
IPC: E04B2/74
Filed: 1990-02-20
Abstract: Studs and plates used to retain compressible insulating panels against sagging in a hollow wall. Also, bars for securing rigid insulating panels in a wall. All of these elements are made of sheet metal and include struck-out prongs defining a similarly-shaped opening in the sheet metal. These prongs are elongated, with a pointed face end and teeth laterally projecting from one side. The inner end of each prong is integrally retained to the sheet metal and the prong can be bent into an operative position, normal to the sheet metal from an inoperative position nearly parallel to the sheet metal. A stop protrudes from the prong at the bending line to abut the sheet metal and maintain the prong in its operative position. The prong, in its inoperative position, protruding from one side of the sheet metal and offset with respect to the opening in the sheet metal, such as that it can be bent through said opening. Therefore, the user cannot bend the prong in the wrong direction.
Patent CA-2012220-A1 (CA)
Title: Polymers and their use
Inventor: WEGNER GERHARD
IPC: G02B1/10
Filed: 1990-03-15
Abstract: - 14 - O.Z. 0050/40649 of the Disclosure: Novel polymers contain phthalocyanine ring systems bonded via axial bonds to a central metal atom in the polymer chain and consist of repeating units of the general formula (I) (I) In the general formula (I), Pcs is a phthalocyanine ring system having peripheral substituents, Me is the central atom of the phthalocyanine ring system, which atom is bonded in the polymer main chain, suitable central metal atoms Me being silicon and germanium, R is alkylene, R' and R'' are each alkyl, cycloalkyl, aryl or alkoxy and Z is a silicon-carbon bond or further Si-containing groups. The novel polymers can be particularly advantageously used for the production of ultrathin layers by the LB technique, optically transparent films having high optical anisotropy and a high volume concentration of phthalocyanine radicals being formed.
Patent CA-2016756-A1 (CA)
Inventor: STEARNS KENNETH W
IPC: A63B22/02
Filed: 1990-05-14
Abstract: A treadmill is disclosed having a belt system carried by a platform structure. The platform structure is pivotally mounted at its rear end to a basestructure. The platform is supported at its forward end by a shock absorber/spring system which provides a damped resilient response of the belt and platform when a person's foot lands during running or walking. Carrying the belt system by theplatform structure enables the endless belt of the belt system to be maintained closely above the platform even when a runner's foot lands on it with heavy impact. The support of the platform immediately below the belt eliminates lateral slack in the belt, which could possibly result in injury to a walker or runner due to an uneven landing surface.
Patent CA-2018296-A1 (CA)
Title: Apparatus and method to test for valve leakage in a pump assembly
Inventor: LAWLESS MICHAEL W
IPC: A61M5/168
Filed: 1990-06-05
Abstract: APPARATUS AND METHOD TO TEST FOR  VALVE LEAKAGE IN A PUMP ASSEMBLY    Abstract of the Disclosure Apparatus and method for determining leakage, particularly of valves, in a pumping cassette. A cassette (70) includes a primary valve (34) and a secondary valve (36), which may be selectively activated to control the source of fluid input to the cassette. The cassette also includes an inlet valve (48) and an outlet valve (56) disposed on each side of a pumping chamber (52). Downstream of the outlet valve is disposed a pressure sensor (60) which produces a signal indicative of the pressure of fluid within the cassette at that point. The cassette also includes an air-in-line sensor (40), disposed between a manifold line (38) that connects the primary and secondary valve in fluid communication with an air trap reservoir (44). Leakage in the inlet or outlet valves is detected by closing both valves, pressurizing fluid in the pumping chamber for a predetermined period of time, and then opening the outlet valve. If a pressure pulse having an amplitudeless than a predetermined level is detected downstream of the outlet valve when it is opened, either the inlet or outlet valve has leaked. The primary and secondary valves are checked for leakage either by pressurizing fluid in the pumping chamber and checking for retrograde flow of air trapped in the air trap reservoir through the air-in-line sensor, or by pressurizing fluid trapped in the cassette, holding the pressure for a period of time before closing the inlet valve, and then opening the outlet valve to detect a pressure pulse propagating downstream of the outlet valve, using the pressure sensor. If a pressure pulse of less than the predetermined magnitude is detected, one of the primary or secondary outlet valves is leaking. Both tests also detect leakage of other portions of the pumping cassette.
Patent CA-2018911-A1 (CA)
Inventor: TOLOMEI VICTOR
IPC: G06T13/00
Filed: 1990-06-13
Abstract: ABSTRACT   A method and apparatus for precisely varying the display rate of computer generated graphic images. These images are generated by a computer system. The images are made up of a plurality of individual cells. Each cell is a picture of the object at a different point in time. With the present method, the user inputs the desired display rate into the computer system. The computer then converts this display rate into a vector located in the first quadrant of an x,y coordinate system. In this system, the x-axis represents increasing time and the y-axis represents cell number. The vector is displaced away from the x-axis through an angle. Theta is a predetermined function of the previously entered display rate. The first cell in the image is displayed, and the computer waits for a fixed interval of time. After this wait period, the computer uses a simple algorithm to check the height of the vector above the x-axis. If the vector is above a specified height, then the next cell is displayed. Otherwise, the computer displays the current cell for an additional fixed interval of time, and then repeats the check of the vector height. The steps of displaying the image and checking the height of the vector above the x-axis is repeated for all cells in the image. If display is to continue after this point, the cells are shown over again in the same order.
Patent CA-2019951-A1 (CA)
Title: Press machine
Inventor: KUZE YOSHIKAZU
IPC: B30B15/18
Filed: 1990-06-27
Abstract: Vertical guide posts are securely mounted on a base plate, and a cylinder plate is securely mounted on top portions of the guide posts.  A hydraulic cylinder is mounted on the cylinder plate and a movable plate is slidably mounted on the guide posts.  A piston rod of the hydraulic cylinder is connected to the movable plate.  By vertically moving the movable plate, press work is performed.
Patent CA-2020891-A1 (CA)
Title: Antiseptic compositions containing hexahydro-5-pyrimidinamine compounds and an amphoteric surfactant and methods for preparing same
Inventor: DILLS STEVEN S
IPC: A61P31/04
Filed: 1990-07-11
Abstract: ABSTRACT OF THE DISCLOSURE IMPROVED ANTISEPTIC COMPOSITIONS         AND AN AMPHOTERIC SURFACTANT AND    METHODS FOR PREPARING SAME              The present invention pertains to topical antiseptic compositions comprising a therapeutically effective amount of a synergistic antiseptic composition comprising an antiseptic hexahydro-5-pyrimidinamine compound and an amphoteric surfactant in a topical vehicle or in a pharmaceutically acceptable carrier. The synergic antiseptic compositions may be utilized in a wide variety of aqueous-based topical antiseptic products and pharmaceutical products. This invention also relates to methods by which these topical antiseptic and pharmaceutical products may be prepared.
Patent CA-2021096-A1 (CA)
Title: Retractable vent and cover arrangement for down draft cooking appliance
Inventor: FALK DONALD G
IPC: F24C15/20
Filed: 1990-07-12
Abstract: PATENT - Docket 9D-RG-17657 - Falk RETRACTABLE VENT AND COVER ARRANGEMENT FOR DOWN DRAFT COOKING APPLIANCE                ABSTRACT An improved retractable venting arrangement applicable to cooktops and ranges which have surface heating units supported from a supporting surface such as a countertop.  A retractable vent member vertically moves through an opening in the support surface proximate the heating units between a lowered position beneath the support surface and a raised position extending above the surface.  A pivotally mounted cover member covers the opening.  The cover is opened and closed by the vent member which engages and moves the cover member to its open position as the vent member moves to its raised position.  The cover member is held in its open position by the vent member, and returns to its closed position as the vent member returns to its lowered position.
Patent CA-2022243-A1 (CA)
Title: System for building up exposed double-voltage electrified lines for supporting user appliances, particularly lighting lamps for internal environments
Inventor: FRASER ALBERTO
IPC: F21S2/00
Filed: 1990-07-30
Abstract: - 43 _ ABSTRACT           This system for building up electrified lines in the form of double-voltage exposed modules for supporting user appliances, particularly lighting lamps for interior environments, is formed from track pieces of standardized length along which conductors extend to form diversified and diversifiable electrical lines, said track pieces being connectable together with the aid of interposable means to form any geometrical configuration suggested by aesthetic and/or functional requirements, and being combinable with supports for user appliances, particularly lamps of various types, along their entire length.
Patent CA-2024083-A1 (CA)
Inventor: ASANUMA YOSHIO
IPC: G01F1/58
Filed: 1990-08-27
Abstract: A positive displacement flowmeter comprising a flowmeter portion including a pair of rotors rotatable in proportion to a fluid's flow in a measuring chamber and a counting portion for measuring a total flow by counting the rotor's rotations. It has many improvements. Firstly, the flowmeter is protected against the penetration of rain water into its counting portion. Furthermore, the counting portion housing is so constructed as to assure the easy mounting of an electric circuit and like components therein and also the possibility to control said circuit from the outside of the housing by use of reed switches and the like.      The flowmeter is improved not to transfer heat of a fluid of high temperature to the counting portion and, furthermore, to assure the easy mounting of rotors in the measuring chamber. Particularly, it is possible to provide high performance rotors mounted in the measuring chamber by using non-circular gears having a special tooth profile and made of special materials. Other various improvements are presented.
Patent CA-2026178-A1 (CA)
Title: Epoxidation process
Inventor: RAMESWARAN M
IPC: C07B61/00
Filed: 1990-09-25
Abstract: ABSTRACT      The present invention relates to the epoxidation of olefinic compounds by reaction with an organic hydroperoxide in the presence of a solid, heterogeneous catalyst comprised of molybdenum oxide finely dispersed in silica or of both molybdenum oxide and titanium oxide finely dispersed in silica.
Patent CA-2029961-A1 (CA)
Title: Ion exchange resins
Inventor: ARSENAULT GILLES J
IPC: B01J39/20
Filed: 1990-11-14
Abstract: This invention provides a new ion exchange resin which is characterized by having carbodithioate functionality (i.e. ~~CS2, where ~ represents the resin bead).        The present ion exchange resin may be prepared from a suitable non-functionalized resin bead by subjecting it to bromination, lithiation and treatment with carbon disulfide.        The carbodithioate functionalized resin of this invention is surprisingly effective for the removal of Group VIII precious metals (e.g. rhodium) from chemical process streams.
Patent CA-2034197-A1 (CA)
Inventor: CONRAD MICHAEL J
IPC: A61K47/48
Filed: 1991-01-15
Abstract: Chemically defined conjugates of biologically stable polymers, such as copolymers of D-glutamic acid and D-lysine, and polynucleotide duplexes of at least 20 base pairs that have significant binding activity for human lupus anti-dsDNA autoantibodies. The duplexes are prefer-ably homogeneous in length and structure and are bound to the polymer via reaction between an amino-reactive functional group located at or proximate a terminus of each duplex. These conjugates are tolerogens for human systemic lupus erythematosus.
Patent CA-2035806-A1 (CA)
Title: Developer module drive system for an electrographic printer
Inventor: PRESZLER DUANE A
IPC: G03G15/10
Filed: 1991-02-06
Abstract: ABSTRACT           A drive system for positioning any one of a plurality of toner developing modules relative to a photoconductor drum of an electrographic printer includes an indexing assembly having a chain drive mechanism. The chain drive mechanism includes a motor drive tow bar that is configured to releasably engage a tow hook mounted to a movable toner cart. The toner cart includes a developer rack that supports the plurality of developing modules. The drive system further includes a lift assembly that is configured to engage any one of developing modules and move it away the rack to a developing position adjacent the photoconductor drum and back to the developer rack. The lift assembly includes a pair of lift arms, each of which is defined by a four bar linkage.  The lift arms include hook assemblies that are configured to engage lift pins mounted on opposite ends of the developing modules. Each hook assembly includes a first centering member that supports a movable spring biased second centering member. The opposite ends of the modules are configured to engage first gapping surfaces of a pair of gapping cams mounted adjacent to the photoconductor drum. This engagement establishes the vertical gap clearance needed between the drum and module for the developing process.  The opposite ends of the modules are further configured to engage second gapping surfaces of the gapping cams to define the developing position of the developing modules.
Patent CA-2036848-A1 (CA)
Title: Programmable gain control for rotating transducer ultrasonic tools
Inventor: ZIMMER MARK D
IPC: G01V1/24
Filed: 1991-02-21
Abstract: A rotary ultrasonic transducer logging tool is set forth which has a transmitter connected to a transducer for transmitting pulses periodically, and a rotor with angle sensor connected thereto. One full revolution is divided into a specified number of incremental steps. The output of the receiver is supplied to an automatic gain control amplifier, then to an analog to digital converter. A gain control setting for the AGC amp is included. The AGC setting for the particular corresponding points in a first revolution of the transducer are used to provide settings for the AGC amplifier in the next revolution. A first buffer is used to store the data for the first revolution, a second buffer for the second revolution, and alternately back to the first buffer. These two buffers provide an output signal for a gain control buffer then input to the AGC amplifier. Alternate forms of gain control signal selection are used such as prior gain control settings.
Patent CA-2038619-A1 (CA)
Title: Pushbutton having a laterally directed internal nozzle for a high pressure fast rate spray pump
Inventor: JOUILLAT CLAUDE
IPC: B05B1/10
Filed: 1991-03-19
Abstract: A B S T R A C T      A pushbutton having a nozzle, suitable for being mounted on the valve rod of a liquid spray pump and intended, more particularly, to operate under very high pressures of the order of 50 bars or more, and in particular more than 100 bars, and at a very high repetition rate, of the order of 50 Hz or more. The center of gravity of the pushbutton when associated with the nozzle lies on the axis of the valve rod.
Patent CA-2038757-A1 (CA)
Title: Protein adhesion film for packaging
Inventor: AHLGREN KELLY R
IPC: A23L5/10
Filed: 1991-03-21
Abstract: In general, the instant invention relates to protein adhesion cook-in films (1) having a protein adhesion sealing layer of polymer having carboxylic acid moieties and (2) wherein said sealing layer does not require metal ionomer cross-linking in order to exhibit protein adhesion. More particularly, it relates to a thermoplastic film comprising a thermosealing layer selected from ethylene-methacrylic acid copolymers ( EMAA ) having a methacrylic acid content of about 4 to about 18% by weight, and ethylene-acrylic acid copolymers ( EAA ) having an acrylic acid content of about 4 to about 22% by weight. The sealing layer has improved sealing and strength properties, as well as protein adhesion characteristics.
Patent CA-2039499-A1 (CA)
Title: Device for preventing oil from dripping out of the burner nozzle of an oil-fired heating system
Inventor: JENSEN PER F
IPC: F23D11/44
Filed: 1991-04-02
Abstract: Abstract A device for preventing oil from dripping out of the burner nozzle of an oil-fired heating system contains a nozzle-holder/oil-warmer unit which comprises at least one electrical heating element (1) for maintaining the oil temperature.   In order, with the minimum of expenditure, to avoid before and after-dripping of the oil nozzle and to allow a largely undelayed switching on of the burner once the boiler temperature has fallen below the specified value, the heating element (1) is arranged to be operated so that the oil temperature is continuously regulated during operation of the oil-fired heating system, so that the oil volume in the nozzle-holder/oil-warmer unit largely remains constant.            Fig. 2
Patent CA-2039698-A1 (CA)
Inventor: DURIVAGE LEON W III
IPC: H02H3/33
Filed: 1990-08-24
Abstract: Un système de déclenchement géré par processeur utilise un circuit de détection de courant à trois phases comportant un nombre minimum d'éléments. Une série de détecteurs de courant (108, 110) est située adjacente au chemin (106) suivi par le courant afin d'y détecter les phases respectives du courant. Lesdits détecteurs de courant (108) envoient des signaux de courant respectifs à un transformateur de court-circuit à la masse. Ledit transformateur (508) comprend des inducteurs d'entrée reliés aux détecteurs respectifs de sorte que le courant qui passe à travers chaque détecteur de courant passe également à travers un desdits inducteurs. Un inducteur de sortie disposé dans le transformateur de court-circuit à la masse est accouplé aux inducteurs d'entrée de manière à y ajouter les signaux de courant provenant des détecteurs de courant (108, 110) et à générer un signal de courant de sortie lors d'un court-circuit à la masse. On redresse ensuite ledit signal de courant de sortie de manière à générer un signal redressé correspondant au courant de sortie. Le processeur (120) reçoit le signal redressé afin de détecter le court-circuit à la masse (508) dans le chemin suivi par le courant à trois phases et envoie un signal de déclenchement à un solénoïde de manière à interrompre le chemin du courant. Le transformateur du court-circuit à la masse comprend également un inducteur d'entrée de test pouvant recevoir un signal CA externe permettant de simuler un court-circuit à la masse.
Patent CA-2039872-A1 (CA)
Title: Radial internal combustion engine
Inventor: SADLER WILLIAM G
IPC: F02B75/02
Filed: 1991-04-05
Abstract: ABSTRACT OF THE DISCLOSURE             A radial internal combustion engine comprises an engine housing and a plurality of piston-cylinder pairs arranged on the periphery of the housing. The piston-cylinder pairs are arranged in two rows, three cylinders in each row. A connecting rod connects each piston to a crankshaft axially disposed within the engine housing. The connecting rods terminate in an arcuate flange. The connecting rods in each row of cylinders lie in a common plane equally sharing the crankshaft journal bearing surface. Lubrication about the crankshaft journal is provided through an oil flow passage which extends through the crankshaft for lubricating the crankshaft journal and the valve train of the engine.
Patent CA-2042046-A1 (CA)
Inventor: LOEGEL CHARLES
IPC: B28B17/00
Filed: 1990-04-09
Abstract: An additional coolant is added to a medium pressurized at very high pressures, especially over 1500 bar, particularly for cutting very hard rocks like granite.  To this end the pressure medium is forced out in the form of individual narrow jets from a nozzle head (5) and the guiding jet (5g) of the coolant is directed towards at least some jets (5b) of the pressure medium so that, together with the pressure medium, a cooling effect is exerted on the object to be processed, resulting in an improved smashing effect.
Patent CA-2046330-A1 (CA)
Inventor: DAVIS ROBERT B
IPC: D21F7/08
Filed: 1990-11-28
Abstract: The present invention relates to a felt for use in papermaking machines showing enhanced resistance to degradation in the presence of peroxide which felt comprises a woven base and a sheet contacting layer attached thereto characterised in that at least one of said layer and said woven base comprises fibres of polyamide 12,12 formed by extrusion of a melt of polyamide 12,12  hav-ing intrinsic viscosity of not less than 0.65 dl/gram.
Patent CA-2048067-A1 (CA)
Title: Method for recycling discolored polyolefins
Inventor: PATEL AMBELAL R
IPC: C08J11/24
Filed: 1991-07-29
Abstract: Polyolefins, especially those containing a phenolic antioxidant, are prone to discoloration upon improper processing at elevated temperatures or upon prolonged aging. Such discolored polyolefins can be recycled as essentially non-colored useful polymers by the addition thereto of a hydroxylamine of the formula where T1 and T2 are independently e.g. alkyl, cycloalkyl, benzyl or substituted benzyl.
Patent CA-2048823-A1 (CA)
Inventor: RAO MOHAN A
IPC: B01D19/04
Filed: 1991-08-08
Abstract: ABSTRACT    A defoamer composition useful for suppressing foam formation during pulp mill brown stock washing comprises a  plurality  of  components,  including  a  significant quantity  of  water.     The  composition  comprises hydrophobic  silica,  silicone  oil,  liquid hydrocarbon oil, water and emulsifiers.
Patent CA-2053107-A1 (CA)
Inventor: COWEN RUSSELL A
IPC: H05B3/50
Filed: 1991-10-09
Abstract: A compressor crankcase heater bracket and method of assembly is shown in which a bracket fastened to the compressor accommodates a metal spring clip holding the heater.  The method of assembly results in a quick and easy assembly process without compromising the integrity of the transfer of heat to the housing.  Thermal transfer is further aided by conduction through the clip and bracket.
Patent CA-2054822-A1 (CA)
Title: Formulations and their use in the treatment of neurological diseases
Inventor: MASTERSON JOSEPH G
IPC: A61K9/70
Filed: 1991-11-01
Abstract: Pharmaceutical formulations comprise a mono- or di-aminopyridine active agent for administration on a once- or twice-daily basis for use in the treatment of neurological diseases, in particular multiple sclerosis and Alzheimer's disease. The formulations, which are suitable for oral or percutaneous administration of the active agent, include the active agent in a carrier effective to permit release of the mono- or di-aminopyridine at a rate allowing controlled absorption thereof over, on the average, not less than a hour period and at a rate sufficient to achieve therapeutically effective blood levels over a period of 12-24 hours following administration.