baber/WOPTO huggingface dataset:
Patent CA-2002290-A1 (CA)
Title: Flip down visual display system using pads and supporting structure
Inventor: JOSEPHSON JOSEPH P
IPC: B42D5/00
Filed: 1989-11-06
Abstract: The present application discloses a display system for visual display purposes comprising a supporting structure adapted for supporting at least one display pad, the supporting structure having first cooperating releasable retaining means adapted to releasably hold the pad and having second cooperating releasable retaining means adapted to operate in conjunction with the first cooperating releasable means, the second cooperating releasable means being for mounting the pad with the first cooperating releasable means to the supporting structure.  Also disclosed is a display pad which includes a plurality of sheets of material joined together to form the pad, the pad having a first side with means for securing the first side of the pages of material together along the side and an opposed end provided with second cooperating releasable retaining means.
Patent CA-2005149-A1 (CA)
Inventor: SMITH CHARLES E JR
IPC: A61F2/958
Filed: 1989-12-11
Abstract: A balloon dilatation catheter is provided with a fluted balloon defining at least three wings. When the balloon collapses, it tends to assume the fluted configuration which defines a lower profile better adapted to pass through narrow channels, such as in endoscopes and guide catheters. The balloon is formed from a polymeric material in a method that involves the steps of tensioning the balloon to cause it to form flutes while maintaining its interior under vacuum and subjecting the balloon, while so held, to heat and, thereafter, cooling the balloon while maintaining it in its tensioned, fluted configuration.
Patent CA-2007965-A1 (CA)
Title: Suppression of the evolution of hydrogen sulfide gases from petroleum residua
Inventor: WEERS JERRY J
IPC: C10G29/20
Filed: 1990-01-17
Abstract: Hydrogen  sulfide  gas evolution  during  storage  or transport  of  petroleum  residua  are  suppressed  by  the incorporation of an effective amount of a diamine of the formula   wherein R1,  R2,  R3,  and R4 are independently an alkyl radical containing 1 to 14 carbon atoms,  (CH2)n-OR6 or cycloalkyl  containing  5  or  6  carbon  atoms  and  R5  is hydrogen or methyl.   R1 and R2 and R3 and R4 can be alkylene  groups  joined  together with  their  respective adjacent N to form a heterocyclic ring.  R6 is hydrogen or an alkyl radical having 1 to 5 carbon atoms and n is an integer of 1 to 5.
Patent CA-2008000-A1 (CA)
Title: Decoder for subsampled video signal
Inventor: MASUMOTO TAKAHIKO
IPC: H04N7/12
Filed: 1990-01-17
Abstract: ABSTRACT OF THE DISCLOSURE     Disclosed is an intrafield interpolation circuit for interpolating pixel signals between pixel signals sampled based on Multiple Sub-nyquist Sampling Encoding (MUSE).          There are provided in this interpolation circuit switches (S4a, S4b, S4c) for selecting pixel signals from delay elements (33h, 33i, 33j).  Since these switches axe controlled at a suitable timing, correct pixel signals obtained by an operation are interpolated between the sampled pixel signals.  In addition, since pixel signals required only for an interpolation processing are handled, multipliers require half the operation speed of a conventional circuit, resulting in an enhanced reliability in operation.
Patent CA-2008395-A1 (CA)
Title: Method and apparatus for processing more than one high speed signal through a single high speed input terminal of a microcontroller
Inventor: HAMDAN MAJED M
IPC: B60T8/172
Filed: 1990-01-23
Abstract: ABSTRACT OF THE DISCLOSURE        A method and apparatus for processing two high speed signals through a single high speed input terminal of a microprocessor uses a multiplexing circuit connected between the signal conditioners from the wheel speed sensor and the microprocessor.  The multiplexing circuit converts the square wave signal as generated by the signal conditioning circuits into a series of interrupts.  The multiplexing circuit includes three hardware semaphores or flip-flops which are set by the interrupts generated from wheel speed signals.  The semaphores or flip-flops are reset by the microprocessor.
Patent CA-2009689-A1 (CA)
Title: Oleophilic basic amine compounds as an additive for invert drilling muds
Inventor: MUELLER HEINZ
IPC: C09K8/32
Filed: 1990-02-09
Abstract: In a first embodiment, the invention relates to the use of basic amine compounds of pronounced oleophilic character and at most limited solubility in water, which are capable of forming salts with carboxylic acids, as an additive for w/o invert drilling muds which contain in the continuous oil phase ester oils and, together with the disperse aqueous phase, emulsifiers, weighting agents, fluid loss additives and, if desired, other additives for protecting the drilling muds against unwanted thickening in use or for improving their flowability. In another embodiment, the invention relates to w/o invert drilling muds which are suitable for the improved offshore development of oil and gas sources and which are characterized by the presence of basic amine compounds of pronounced oleophilic character which are capable of forming salts with carboxylic acids.
Patent CA-2010322-A1 (CA)
Title: Process for controlling aluminium smelting cells
Inventor: BLATCH GEOFFREY I
IPC: C25C3/20
Filed: 1990-02-19
Abstract: A process for controlling an aluminium smelting cell comprising monitoring the cell voltage and current, alumina dumps,  additions, operations and anode to cathode distance movements, continuously calculating the cell resistance and the bath resistivity from said monitored cell voltage and current, monitoring the existence of low frequency and high frequency noise in the voltage of the cell, continuously calculating the time rate of change of resistance of the cell,  suspending calculation for a predetermined time when an alumina dump, addition, operation or ACD movement occurs, establishing  filtered  resistance  slope thresholds, determining whether the low frequency noise is above a predetermined threshold, and if so, increasing the filtered slope thresholds for low alumina concentration detection, calculating an alumina inventory from the alumina dumps, determining whether the cell is overfed, and if not feeding alumina to prevent an anode affect, calculating the heat supplied and heat required for aluminium production, calculating the heat available for dissipation, calculating the target heat for the cell, calculating the difference between the available heat and the target heat with respect to time, calculating a running heat inventory from the integral  of  this difference,  establishing a  target resistance for the cell and modifying that target resistance to achieve a zero heat integral, checking that the target resistance is an allowable value, and moving the anodes of the cell to establish the new target resistance, estimating the time rate of change of bath resistivity and checking whether resistivity and the derivative are greater than predetermined limits, and if so, adjusting the target heat of the cell to maintain the long term heat balance of the cell.
Patent CA-2011070-A1 (CA)
Title: Prism switch
Inventor: CHRISTEN HANSPETER
IPC: B65G21/22
Filed: 1990-02-28
Abstract: For the random connection of tracks coming together in a junction of a conveying system with push and pull operable conveying chains without return strand running in chain channels, a switch constructed as a straight prism (21) mounted in rotary manner is proposed. On its sides, this prism has different chain channel portions (23', 23"). By rotating prism (21) about its median longitudinal axis (22), that chain channel portion is positioned in the junction, which obtains the desired connection between the chain channel of an entering and an exiting track.
Patent CA-2014987-A1 (CA)
Title: Visual alarm system and circuitry
Inventor: SAGI GEORGE S
IPC: G08B29/00
Filed: 1990-04-20
Abstract: Visual Alarm System And Curcuitry Abstract of the Disclosure A wired alarm system and its alarm supervisor with modular alarm sensor blocks containing within themselves light emitting and common diodes and indicating lights, to provide multiple status detection, deterrents for intruders, and speedy diagnostics and repair of faults. The system is modular, it is an improvement for new alarm instillations and allows upgrading of existing series cascaded two-wire alarm systems, at low cost.
Patent CA-2018623-A1 (CA)
IPC: H01R4/24
Filed: 1990-06-08
Abstract: ABSTRACT OF THE DISCLOSURE       A structure of connection between a bus bar and a press-connecting branch terminal in an electric connection box is disclosed wherein a plurality of bus bars constituting a circut are accommodated within a casing composed of an upper case and a lower case; a housing having tab insertion holes at its bottom is formed on at least one of the upper and lower cases; a branch tab formed on one side portion of a press-connecting  branch  terminal  is  extended  through  the  tab insertion hole  into the housing  to thereby constitute  a connector insertion portion; and a desired one of the bus bars is press-fitted in and connected to a U-shaped slot formed in a press-connecting portion formed on the other side portion of the press-connecting terminal.   The press-connecting branch terminal  includes  a  base  plate  portion,  opposed  press-connecting portions formed on and projecting from one side of the base plate portion and each having a U-shaped slot, and one or more branch tabs formed on and projecting from the other side of the base plate portion.  A seat for receiving the base plate portion is formed on an inner side of the bottom of the housing.  A press projection is formed on that portion of the inner surface of the case disposed in opposed relation to the seat.  Those portions of the press-connecting branch terminal and the bus bar which are press-connected together are fixedly held between the seat and the press projection.
Patent CA-2018840-A1 (CA)
Title: Multistage process for oxygenate conversion to hydrocarbons
Inventor: HARANDI MOHSEN N
IPC: C07C2/12
Filed: 1990-06-12
Abstract: MULTISTAGE PROCESS FOR OXYGENATE CONVERSION         TO HYDROCARBONS                           ABSTRACT     A continuous multistage process for preparing gasoline and/or distillate range hydrocarbons from lower molecular weight oxygenate feedstock wherein hydrocarbon yield is increased by recovering a vapor stream rich in ethene from an oxygenates conversion stage and reacting the ethene in a high severity reaction zone containing high activity zeolite catalyst.
Patent CA-2020166-A1 (CA)
Title: Polymers for high gloss coatings
Inventor: MARTZ JONATHAN T
IPC: C08G59/16
Filed: 1990-06-29
Abstract: ABSTRACT OF THE DISCLOSURE          Disclosed is a resinous composition comprising: a polymer product prepared by reacting a saturated monocarboxylic acid, a polymerizable ethylenically unsaturated epoxy-functional monomer, optionally a copolymerizable hydroxyl-functional vinyl monomer, and optionally at least one other copolymerizable ethylenically unsaturated monomer.  Preparation of the polymer product in part involves reaction of carboxyl functionality from the saturated monocarboxylic acid with epoxy functionality from ethylenically unsaturated epoxy-functional monomer.         Also disclosed is a coating composition containing as binder the polymer product.         Additionally disclosed is a "color plus clear" method of coating utilizing the polymer product.
Patent CA-2020427-A1 (CA)
Title: Articles coated with vinyl dispersion resins
Inventor: KIM JONGSHUN S
IPC: C09D5/04
Filed: 1990-07-04
Abstract: ABSTRACT OF THE INVENTION Coating compositions comprise a thixotropic resin dispersion in which the resin particles are a vinyl polymer, a cross-linked unsaturated carboxylic acid polymer which is neutralized with a salt of a low valence metal, and an adhesion promoter.
Patent CA-2022055-A1 (CA)
Inventor: OKADA GENTARO
IPC: A61P1/02
Filed: 1990-07-26
Abstract: ABSTRACT OF THE DISCLOSURE    A dental plaque-degrading composition containing endodextranase produced by Arthrobacter globiformis W31 exhibiting high degradation efficacy to insoluble glucan produced by Streptococcus mutans IFO 13955, the dental plaque-degrading composition additionally cointaining .alpha.-amylase of various origins.  These compositions are useful for preventing the settlement of Streptococcus mutans in the oral cavity and the formation of new dental plaque and for preventing the dental caries, and provided in the form of dentifrices, denture detergents, troches, mouth washes, chewing gums or candies.
Patent CA-2023415-A1 (CA)
Title: Process for purifying the effluent from urea production plants
Inventor: GRANELLI FRANCO
IPC: C02F101/38
Filed: 1990-08-16
Abstract: A process for purifying the effluent originating from urea production plants, consisting of three successive treatment stages, namely stripping of the volatile components, thermal hydrolysis of the urea and biuret in a plurality of zones traversed with piston flow, and final stripping of the volatile components produced by the hydrolysis.
Patent CA-2025144-A1 (CA)
Inventor: TAYLOR ROBERT M
IPC: H04B10/213
Filed: 1990-09-12
Abstract: ABSTRACT OF THE DISCLOSURE       Conventional optical ladders have several optical sensors connected in parallel between an input and output bus via respective input and output couplers.  Radiation from a source is supplied to the input bus from where it is coupled to each sensor in turn after passage through any upstream input couplers on the input bus.  The output couplers are connected such that radiation on the output bus flows in the opposite direction from the input bus with the radiation from the sensor furthest from the source passing through the output couplers of the other sensors before reaching a radiation detector.  In the present invention, the output couplers are connected in the opposite way so that radiation on the output bus flows in the same sense as on the input bus with radiation from the sensor closest the source passing through the output couplers of all the other sensors before reaching the detector.  In this way, all the input and output couplers can have identical coupling coefficients.
Patent CA-2025512-A1 (CA)
Title: Pressure-responsive fluid saving device
Inventor: FARAON-CHAUL CESAR
IPC: G05D7/01
Filed: 1990-09-17
Abstract: ABSTRACT      The dislodgement of the soft washer of a fluids rate of flow saving or limiting device comprising a fluid pressure actuated needle type shutter and a flow restricting washer assembly through which said shutter passes to obstruct the free flow of the fluid depending on the pressure thereof and including a soft washer sandwiched between two hard washers is prevented by enclosing said soft washer within a housing having a circular bottom provided with an opening of a predetermined diameter larger than the diameter of said shutter, a cylindrical wall extending upwardly along the periphery of said bottom to a distance sufficient to constitute a cavity for receiving said soft washer, and a lid to cover the housing and having an opening of the same diameter as said bottom, said lid being arranged with respect to said cylindrical wall so as to sandwich said soft washer between said lid and said bottom, said soft washer having an opening of a diameter smaller than the diameter of the openings in said lid and said bottom and being fixed within said housing to avoid dislodgement thereof by high fluid pressures.  Under low to moderate fluid pressures, the flow restricting washer assembly merely comprising the soft washer sandwiched between the two hard washers provides a satisfactory and efficient operation of the device.
Patent CA-2027849-A1 (CA)
Title: Support rails
Inventor: MOORE JOHN A
IPC: A47F7/24
Filed: 1990-10-17
Abstract: ABSTRACT    A support rail which may be used as a clothes support rail is provided, comprising an elongate support member and a plurality of means for receiving a hanger stem.          The receiving means are mounted equidistantly along the length of the support member and enable an object, such as an article of clothing suspended from a clothes hook, to be supported therefrom.  The receiving means each comprise a receptacle mounted to said elongate support member such that they are each movable between a first open position and a second closed position.  Placing the hanger stem of a hanging device within the receptacle causes the receptacle to move from its normal first open position to its second closed position.  When in its said second closed position, no additional hanger stems can be placed in said receptacle.  A clothes rail comprising the support rail of the invention has the advantage of reducing the likelihood of displayed garments becoming clustered on the clothes rail after purchasers have firstly removed the garments from the rail and then replaced them.
Patent CA-2028076-A1 (CA)
Title: Synthesis of swainsonine and analogs thereof
Inventor: FLEET GEORGE W J
IPC: C07D493/04
Filed: 1990-10-19
Abstract: 07-27(635)A              SYNTHESIS OF SWAINSONINE   AND ANALOGS THEREOF            Abstract of the Disclosure Swainsonine and analogs, namely, 1,4-dideoxy-1,4-imino-D-mannitol and the novel ring contracted swainsonines, (1S,2R,7R,7aR)-1,2-trihydroxypyrrolizidine and (1S,2R,7S,7aR)-1,2,7-trihydroxypyrrolizidine, are synthesized from the divergent intermediate, 4,5-anhydro-1-azido-1-deoxy-2,3-O-isopropylidene-D-talitol.  These novel compounds are glycosidase inhibitors.
Patent CA-2030060-A1 (CA)
Inventor: HASE ALFRED M
IPC: G08B21/20
Filed: 1990-11-15
Abstract: An  alarm  circuit  is provided which  takes  the  place  of auxiliary  contacts  that are generally used in association  with circuit  breakers or fuses to provide an alarm  warning  in  the event  that the circuit breaker or fuse in series with a load has opened for any reason.  The alarm circuit is provided with a high resistance  resistor  that is connected to the load  end  of  the circuit  breaker,  and at the other end of the resistor to a high gain amplifier or solid state relay.  The output of the high gain amplifier is connected to a remote signal relay,  which may be DC relay or an AC relay.  The arrangement is such that the high gain amplifier  becomes  conductive  in  the event  that  the  circuit breaker opens, thereby causing an alarm indication.  Signal means are associated with the circuits,  including an LED to provide  a local  signal  indicative of the fact that the relay has  changed its  state.   A remote alarm circuit is driven by the  change  of state  of  the remote signal delay.   Because the  alarm  circuit monitors  the  circuit breaker itself,  a true indication of  the fact that the circuit breaker has opened is assured.
Patent CA-2030863-A1 (CA)
Title: Bicycle trailer
Inventor: SMITH GILBERT
IPC: B62J7/04
Filed: 1990-11-26
Abstract: ABSTRACT     A trailer for towing behind a bicycle and having a trailer body with a floor, side walls, front and rear walls, and an open top, a removable top cover for covering the open top, a pair of seats located in the body, side by side with one another, a rigid chassis supporting the body, to which the tow bar and wheels are mounted, a tow bar extending forwardly of the front wall moveably attached to the chassis for connection to a bicycle, a pair of road wheels releasably attached to the chassis, and attachments for securing the body to an automobile roof to adapt the body for use as an automobile luggage carrier.
Patent CA-2031887-A1 (CA)
Title: Method for the production of bromodifluoromethane
Inventor: ROBIN MARK L
IPC: C07C17/23
Filed: 1990-12-10
Abstract: ABSTRACT OF THE DISCLOSURE     A method for the production of bromodifluoromethane includes reacting hydrogen and dibromodifluoromethane at between about 400°C and about 600°C and separating the bromodifluoromethane from the reaction product.  Contact times, pressure and molar ratios are not critical, although contact times of about 0.1 to about 20.0 seconds, and molar ratios of hydrogen to dibromodifluoromethane of about 0.1 to about 2.0, are preferred.  The reaction occurs without catalyst, and high conversion, yield and selectivity are achieved.
Patent CA-2033503-A1 (CA)
Title: Spectrophotometer with fan speed control for temperature regulation
Inventor: MCGEE PHILIP A
IPC: G01J3/02
Filed: 1991-01-02
Abstract: Abstract of the Disclosure In  a  spectrophotometer  having  an  oscillating grating, an entrance slit and an exit slit and a light source to irradiate said grating through said entrance slit, the grating and the light source are mounted on a heat sink plate and a fan is provided to blow air over  both  sides  of  said  heat  sink  plate.  A temperature sensing transducer is mounted in the heat sink plate to sense the temperature of the heat sink plate and the output of the photodetector is amplified by an amplifier to energize the electric motor of the fan to control the speed of the fan in accordance with the temperature sensed by the temperature sensor to thereby maintain the temperature of the heat sink plate at a constant value upon the system reaching equilibrium.  In this manner, the wavelength drift of the system is reduced to a very low value.
Patent CA-2036303-A1 (CA)
Title: Process for manufacturing photopolymer plates
Inventor: SCHLOSSER HANS-JOACHIM
IPC: B29C48/40
Filed: 1991-02-13
Abstract: Abstract of the Disclosure The  invention  relates  to  a  process  for manufacturing  photopolymer  plates,   in  which  a photopolymerizable    mixture    containing    a thermoplastically-processible, elastomeric polymer, an ethylenically mono- or polyunsaturated compound which can be polymerized by free radicals and has a boiling point at normal pressure of over 100°C, and also a compound or compound combination which is capable of initiating  a  polymerization  of  the  unsaturated compounds on exposure to actinic light, is fed into a screw-type extruder, melted and degassed therein and is finally fed through a sheet die to a calender nip in which the molding to thickness takes place.   The process comprises premixing the constituents of the photopolymerizable mixture before feeding them to the extruder by bringing the thermoplastic polymer, which is taken in granular form, into contact with liquid constituents of the mixture until the latter have been absorbed by the granules and then covering the granules with the dust of a powder which is insoluble in the liquids and has a particle size of 0.005 to 50 µm. Optimally mixed products of uniform layer thickness are obtainable by the process.
Patent CA-2037863-A1 (CA)
Title: Apparatus for burning oxidizable components in an exhaust flow
Inventor: OBERMULLER HERBERT
IPC: F23G7/06
Filed: 1991-03-08
Abstract: Oxidizable components in an exhaust air or gas flow are burnt by a burner in a combustion chamber enclosed in a housing.      For this purpose the exhaust air is distributed into inlet ends of heat exchanger pipes which have outlet ends near the burner. The arrangement is such that the exhaust air carry-ing oxidizable components flows through the heat exchanger pipes while the exhaust air freed of oxidizable components flows around the heat exchanger pipes. In order to permit effective heat expansions and contractions of the heat ex-changer pipes, these pipes have an L-configuration with radially inwardly extending legs having inlet ends connected into perfor-ations in a jacket forming an exhaust air distribution chamber, and with substantially axially extending legs having outlet ends leading close to the burner. An air inlet leads centrally into the distribution chamber and a cleaned air outlet leads out of the housing.
Patent CA-2039248-A1 (CA)
Title: Ultra-pure thrombin preparation
Inventor: BOCTOR AMAL M
IPC: A61K38/48
Filed: 1991-03-27
Abstract: ABSTRACT      An ultra-pure, clear thrombin solution having a high specific activity is described as well as a method of manufacture.