baber/WOPTO huggingface dataset:
Patent CA-2007430-C (CA)
Title: Drywall finishing tool
Inventor: SNIPES JERRY T
IPC: E04F21/00
Filed: 1990-01-09
Granted: 1998-10-20
Abstract: A drywall finishing tool for applying plaster to a wall surface including a guide assembly useful for guiding the tool when applying a plaster substance to a surface adjacent to an outside corner having a corner edge defined by angularly related wall surfaces, or alternatively for applying plaster to a surface between spaced wall corner edges such as the outside corner edges around an opening between adjacent rooms, the guide assembly having a portion blocking an end of an outlet opening in the tool and including a guide portion extending outwardly therefrom for making sliding contact with the outside corner edge of the wall surface to control and guide movement of the tool when applying plaster to the wall surface adjacent thereto.  The tool may include spaced guide assemblies for engaging spaced outside wall corner edges and alternatively the tool may include a corner guide member pivotally attached to the side walls of the tool and adjustable to extend outwardly therefrom to a position where it can engage an outside corner edge.
Patent CA-2009715-C (CA)
Title: Process for the production of magnesium oxide
Inventor: MIYATA SHIGEO
IPC: C01F5/08
Filed: 1990-02-09
Granted: 1997-09-16
Abstract: A process for the production of a magnesium oxide having high hydrolysis resistance and high fluidity, which comprises:          (A) a step of reacting a water-soluble magnesium salt with an alkaline substance in such an amount that is not more than 0.95 equivalent weight based on 1 equivalent weight of the water-soluble magnesium salt, at a temperature of not more than 40°C, (B) a step of heating the resultant reaction product and its reaction mother liquor at about 50 to 120°C to form a magnesium hydroxide, (C) a step of forming particles having an average secondary particle diameter of about 5 to 500 µm by using a spray drier., (D) a step of firing the particles at about 1,100 to 1,600°C, and (E) a step of pulverizing the resultant fired product under conditions which do not substantially destroy the average secondary particle diameter obtained in the above step (C).
Patent CA-2010664-C (CA)
Inventor: CANFIELD BARTH ALAN
IPC: H04N5/45
Filed: 1990-02-22
Granted: 2000-03-21
Abstract: A picture-in-picture system including panning and scrolling capability moves an inset image about a display in synchronism with the vertical field rate in order to provide smooth movement from one display position to another.
Patent CA-2013467-C (CA)
Title: Gellable aqueous composition and its use in enhanced petroleum recovery
Inventor: LOCKHART THOMAS PAUL
IPC: C09K8/512
Filed: 1990-03-30
Granted: 1998-08-11
Abstract: A gellable aqueous composition able to reduce the permeability of high-permeability zones in an oil reservoir is a aqueous solution containing metered quantities of:          -   a) a water-soluble organic polymer cross-linkable by the effect of a polyvalent metal ion cross-linking agent;          - b) a Cr(III) ion cross-linking agent; and - c) a ligand      for the cross-linking agent chosen from water-soluble organic alpha-hydroxy acids and alpha-amino acids.
Patent CA-2015479-C (CA)
Title: Plastic multi-ring paper binding system using one piece cover
Inventor: SARPY JOHN B JR
IPC: B42B5/10
Filed: 1990-04-26
Granted: 1998-08-11
Abstract: A binder apparatus for use in binding together sheets of paper, each correspondingly pre-aperatured with multiple openings along a margin includes a three panel one piece cover with a front and rear cover connected by a smaller cover   spine   portion   with   parallel   scores   defining respectively pivotal connections between each of the covers and the spine portions.  A plastic ring-type binder includes a spine having an inner concave surface and an outer convex surface and parallel side portions, one side portion having multiple closely spaced flexible rings extending therefrom each with a single free end portion. One or more elongated adhesive bead member extends along the plastic spine convex surface and positioned adjacent the scores and the spine end portions thereof, bonding the spine to the cover set at the cover spine portion thereof.
Patent CA-2015754-C (CA)
Title: Die assembly for and method of forming metal end unit
Inventor: OSMANSKI THOMAS S
IPC: B21D51/44
Filed: 1990-04-30
Granted: 1994-05-03
Abstract: ABSTRACT OF THE DISCLOSURE           This relates to special tooling for forming metal end units for use in conjunction with cans for carbonated beverages and the like wherein the formed end unit is provided with an integral reinforcement in the form of a countersink so as to increase the buckle strength of such an end unit when it is formed of thin metal.  Previously  there  has  been  developed  tooling for  forming  such  an  end  unit  which,  while  it  is commercially satisfactory,  did not produce end units having the required buckle  resistance.  That tooling has been modified by changing the configuration of a punch  core  so  as  to eliminate  a previously formed cylindrical extension of the end unit chuck wall and a countersink starter.  The  punch core  cooperates with a die core to clamp a center panel of a formed end unit shell so as to move the center panel reversely of its forming direction and to effect a folding of an outer peripheral portion of the center panel in a lower part of the previously formed chuck wall into the required countersink.
Patent CA-2018186-C (CA)
Title: Polymer polyol composition containing a grafted polyol-polyacrylate dispersant
Inventor: GASTINGER ROBERT G
IPC: C08G18/72
Filed: 1990-06-04
Granted: 2001-08-14
Abstract: A polymer polyol composition comprising a continuous phase, a disperse phase within the continuous phase, and a dispersant to enhance the stability of the polymer polyol is disclosed. The dispersant is a grafted polyol-polyacrylate dispersant comprised of a isocyanate vinyl monomer/ethylenically unsaturated monomer random copolymer and a polyoxyalkylene polyether, wherein the random copolymer and the polyoxyalkylene polyether are connected through at least one urethane graft site.      Methods of preparing the polymer polyol composition and the grafted polyol-polyacrylate dispersant are provided. The polymer polyol compositions have low viscosities as well as high stability and may be prepared with high levels of dispersed vinyl polymer and high styrene:acrylonitrile ratios in the dispersed vinyl polymer. The polymer polyol compositions are useful for the preparation of polyurethanes, particularly polyurethane foams.
Patent CA-2018900-C (CA)
Inventor: KOVATS TIBOR F I
IPC: G02B6/42
Filed: 1990-06-13
Granted: 1993-08-17
Abstract: PACKAGING METHOD AND PACKAGE FOR EDGE-COUPLED OPTOELECTRONIC DEVICE Abstract of the Disclosure An edge-coupled optoelectronic device is mounted in a TO-style package which comprises a substrate assembly, a circular header and a cylindrical cap. A substrate and an insulating cover of the substrate assembly extend through an opening of the circular header and are secured in that opening. The optoelectronic device is secured to the substrate at a device support location. Electrical conductors are wire-bonded at contacts of the optoelectronic device and at corresponding device contacts of the substrate assembly to electrically connect the contacts of the optoelectronic device to respective conductors of the substrate assembly. The cylindrical cap is secured onto the header over the optoelectronic device. -i-
Patent CA-2023888-C (CA)
Title: Intron sequence analysis method for detection of adjacent and remote locus alleles as haplotypes
Inventor: SIMONS MALCOLM J
IPC: C12Q1/68
Filed: 1990-08-23
Granted: 2004-06-08
Abstract: The present invention provides a method for detection of at least one allele of a genetic locus and can be used to provide direct determination of the haplotype. The method comprises amplifying genomic DNA with a primer pair that spans an intron sequence and defines a DNA sequence in genetic linkage with an allele to be detected. The primer-defined DNA sequence contains a sufficient number of intron sequence nucleotides to characterize the allele. Genomic DNA is amplified to produce an amplified DNA sequence characteristic of the allele. The amplified DNA sequence is analyzed to detect the presence of a genetic variation in the amplified DNA sequence such as a change in the length of the sequence, gain or loss of a restriction site or substitution of a nucleotide. The variation is characteristic of the allele to be detected and can be used to detect remote alleles. Kits comprising one or more of the reagents used in the method are also described.
Patent CA-2024854-C (CA)
Title: All around play ground kit
Inventor: BERTRAND VICTOR J
IPC: A63G1/32
Filed: 1990-09-07
Granted: 2002-10-29
Abstract: There is disclosed a play kit of detachable plastic components capable of forming either a slide assembly or a teeter assembly. The kit includes an elongated plastic playboard as a basic playing element. The latter has a wavy configuration and is constructed in two symmetrical members abutting one another and releasably locked to each other. When used as a slide, the playboard is removably connected, at one end, to an upper end of a plastic support formed with steps to act as a ladder. The latter and the playboard are held together by removable struts. When the basic element is used as a teeter board, the support is made to act as a base. A prop structure is then detachably connected to the said base and to the playboard to allow the latter to teeter as well as to rotate about a vertical axis.
Patent CA-2026989-C (CA)
Title: Water supply control system
Inventor: TSUTSUI OSAMU
IPC: H03K17/94
Filed: 1990-02-07
Granted: 1994-01-04
Abstract: [57]                    ABSTRACT A water supply control system has a faucet actuating means for actuating a water supply faucet to supply water, a light-emitting means for intermittently emitting light as at least a first period, a light-detecting means for detecting light emitted from the light-emitting means and reflected by a portion of the body of a user of the faucet, and for producing a detecting signal indicative of whether the light id detected or not, and a control means for controlling the faucet actuating means to actuate the faucet based on the detected signal from the light-detecting means. The control means comprises an auxiliary light-emitting means for enabling the light-emitting means to effect a plurality of light emissions at a second period shorter than the first period, based on the detected signal from the light-detecting means, and a decision means for applying a control signal to the faucet actuating means to control the faucet based on the number of times in which the light is detected by the light-detecting means, among the light emissions caused by the auxiliary light-emitting means through the light-emitting means.
Patent CA-2029391-C (CA)
Title: Electronic gap sensor and method
Inventor: WILLIAMS ROBERT S
IPC: B22D11/16
Filed: 1990-11-06
Granted: 1996-05-28
Abstract: An apparatus and method for  regulating  the  gap between a casting nozzle and a casting wheel in which the gap between the casting nozzle and the casting wheel is monitored by means of at least one sensing element  protruding  from  the  face  of  the  casting nozzle.  The sensing element is preferably connected to a voltage source and the casting wheel grounded. When the sensing element contacts the casting wheel, an electric circuit is completed.  The completion of the circuit can be registered by an indicator,  and the  presence  or  absence  of  a  completed  circuit indicates the relative position of the casting nozzle to the casting wheel.  The relative positions of the casting  nozzle  and  casting  wheel  can  thereby  be selectively  adjusted  to   continually  maintain   a predetermined   distance   between   their   adjacent surfaces.
Patent CA-2032396-C (CA)
Title: Multi-cavity melt distribution manifold
Inventor: KNUDSEN JERRY A
IPC: B29C45/27
Filed: 1990-12-19
Granted: 2002-06-25
Abstract: An injection molding manifold fot distributing pressurized melt from a common inlet to thirty two outlets. The steel manifold has rear and forward plate portions which are integrally brazed together. The rear portion is drilled and plugged along a first transverse plane to provide the melt passage with branches from a common inlet portion to four intermediate portions. Four sets of matching grooves are machined in the joining faces of the rear and forward portions whereby each intermediate portion of the melt passage in turn branches along a second transverse plane to eight outlet portions, each leading to a cavity. The combination of the melt passage branching in several different directions in two different transverse planes with the second plane having different sets of curved portions allows the melt passage to have a large number of outlets while still having smoothly curved bends without having a leakage problem.
Patent CA-2032508-C (CA)
Inventor: MURATA MASAHIDE
IPC: C08F4/658
Filed: 1990-05-17
Granted: 1999-07-27
Abstract: According to the present invention, there is the provision of a catalyst component of metal oxide support type which has a high catalytic activity, that is, a little catalyst residue in a polymer, as well as improved catalytic grain strength sufficient for practical use and which hardly deteriorates even after storage for a long time.  The feature of the present invention of consists in a catalyst component for the polymerization of olefins, obtained by contacting (a) a metal oxide and (b) a dihydrocarbyl magnesium then contacting with (c) a compound represented by the general formula X1 nM(OR1)m-n wherein X1 is a hydrogen atom, halogen atom or a hydrocarbon group of 1 to 20 carbon atoms, M is boron, carbon, aluminum, silicon or phosphorus atom, R1 is a hydrocarbon group of 1 to 20 carbon atoms, m is the atomic valence of M and m > n ~ 0 and (d) a titanium alkoxide represented by the general formula Ti(OR2)4 wherein R2 is a hydrocarbon group of 1 to 12 carbon atoms, and then contacting the resulting solid with (e) an olefin in the presence of (f) an organoaluminum compound, then with (g) a halogen-containing alcohol and further with (h) an electron donating compound and (i) titanium compound.
Patent CA-2032803-C (CA)
Title: Process for the preparation of a polypropylene molding composition
Inventor: SCHRECK MICHAEL
IPC: C08F4/602
Filed: 1990-12-20
Granted: 2002-06-04
Abstract: A propylene block copolymer having good flow properties and a very good low temperature impact strength is obtained in a high yield if a catalyst which consists of a chiral metallocene, containing a bridge, of the for-mula I (see formula I) and an aluminoxane is used for the polymerization of propylene and the comonomers.      The polymerization is carried out in two stages, a crystalline propylene polymer in liquid monomers being prepared in the first stage and a copolymer in the gas phase being prepared in the second stage.
Patent CA-2033886-C (CA)
Title: Method and apparatus for feeding air into a flotation cell
Inventor: LEIPONEN MATTI OLAVI
IPC: B03D1/20
Filed: 1991-01-09
Granted: 1998-12-22
Abstract: The invention relates to a method and apparatus for feeding air into a flotation cell provided with a rotor and a stator.  According to the method and apparatus of the present invention, air is fed into the intermediate space formed in between the rotor and stator covers, to above the rotor, wherefrom the air is distributed symmetrically.
Patent CA-2036817-C (CA)
Inventor: FARRALL GEORGE ALBERT
IPC: H01F41/10
Filed: 1991-02-21
Granted: 2002-02-12
Abstract: An excitation coil for a high intensity discharge lamp has an optimized configuration for maximizing efficiency and minimizing output light blockage. The coil comprises a conductive surface having a shape which corresponds to rotating a bilaterally symmetrical trapezoid about a coil center line in the same plane as the trapezoid without intersecting the center line. The conductive surface is disposed on a conductive core for efficient heat removal from the coil, resulting in reduced coil losses. In one embodiment, the coil cross section is increased by adding a rectangular portion to the trapezoidal portion, thereby extending the coil outwardly from the coil center line so as to remove heat from the coil more quickly without affecting light output from the lamp. The coil is constructed by separately casting the coil turns and brazing a connecting member therebetween, and then cutting a slit in each turn so as to electrically connect them in series.
Patent CA-2037428-C (CA)
Title: Reproducing optical device for a magneto-optical recording medium
Inventor: TAKAHASHI AKIRA
IPC: G11B11/105
Filed: 1991-03-01
Granted: 1997-04-01
Abstract: A reproducing optical device for a magneto-optical recording medium related to the present invention having light sources that emit linearly polarized lights towards a   magneto-optical   recording   medium,    polarization directions of the linearly polarized lights being mutually orthogonal.  A quarter wavelength plate disposed between the recording medium and the light sources converts each of  the  linearly polarized  lights  into  right  and  left circularly polarized lights respectively.   Corresponding to  recorded  information,   the  recording  medium  has magnetized   sections   that   are   magnetized   in a perpendicularly upward and downward direction with respect to  a  medium  surface.   Moreover,  the  recording  medium displays the property of  circular dichroism.   When the right circularly polarized light and the left circularly polarized light are reflected off the recording medium, a first and a second photodetector generate a first and a second reproduced signal respectively, based on variation in reflected light intensity of each of the circularly polarized  lights.   This  variation  corresponds  to  the upward and the downward magnetization directions of the magnetized sections and is due to the circular dichroism effect.   There  is  a  phase difference of  half  a  cycle between the first and the second reproduced signal and the signals  vary  inversely  with  respect  to  each  other.          Consequently,  disk noise is cancelled by differentially amplifying the first and the second reproduced signal, and an  SN  ratio  of  a  reproduced  signal  thereby  can  be improved.
Patent CA-2038718-C (CA)
Title: Bloodless catheter with self-shielding needle
Inventor: LEMIEUX FRANCIS P
IPC: A61M39/00
Filed: 1991-03-20
Granted: 2002-05-14
Abstract: A catheter with a double membrane gasket and a locking needle guard is disclosed. The gasket prevents blood from seeping through the catheter hub. The locking needle guard prevents the user from inadvertent needle sticks.
Patent CA-2042823-C (CA)
Title: Multilayer interconnection substrate
Inventor: HASEGAWA SHINICHI
IPC: H01L23/538
Filed: 1991-05-17
Granted: 1996-07-09
Abstract: A multilayer interconnection substrate comprising the first to third power interconnections provided with the first to third interconnection layers, the first insulating layer provided between said first and second interconnection layers, the second insulating layer provided between said second and third interconnection layers, a plurality of the first via holes which are provided at said first insulating layer and connect said first and second power interconnections and a plurality of the second via holes which are provided at said second insulating layer with the position being shifted from that of said first via holes and connect said second and third power interconnection.  The substrate has lower distribution resistance.
Patent CA-2043598-C (CA)
Title: Telemetry access arrangement
Inventor: GARLAND STUART M
IPC: H04M11/00
Filed: 1991-05-30
Granted: 1995-03-14
Abstract: This invention relates to a method and apparatus for accessing customer meters and for controlling customer devices over a telephone line. A suppressed ringing connection is established over a customer line between a central office and customer station equipment. The connection is between a data accessing device such as a meter reading controller and a customer premises device such as a meter interface unit. Signals are exchanged over the connection between these two units without alerting the customer via a ringing signal and without changing the supervisory state of the customer's station equipment from on-hook. The connection can also be used for controlling devices such as air conditioning units, in order, for example, to avoid overloads in a power distribution system. The voice switching network of the central office is used for making the connection between the meter control unit and the meter interface unit. Advantageously, this arrangement can allow a large number of utility meters and controlling devices to be accessed remotely using existing telephone plant.
Patent CA-2056955-C (CA)
Title: Method of detecting pre-spotting when dispensing sample
Inventor: BUTTURINI RANDALL S
IPC: G01N1/00
Filed: 1991-12-04
Granted: 1995-01-10
Abstract: ABSTRACT A method of detecting pre-spotting is described, comprising measuring the amount of IR light transmitted through a slide test element, using an IR-emitting diode and a photosensitive transistor or photodiode.  The amount of transmission is compared against a standard level up until the time when sample dispensing is to commence.
Patent CA-2063173-C (CA)
Title: Rubber-reinforced styrene resin composition and process for producing the same
Inventor: NORO MASAHIKO
IPC: C08L25/12
Filed: 1992-03-17
Granted: 2000-08-01
Abstract: Disclosed is a rubber-reinforced styrene resin composition consisting essentially of: (1) 2-30% by weight of a grafted rubbery polymer wherein 100 parts by weight of a rubbery polymer (I) is grafted with less than 30 parts by weight of a polymer of a monomer component consisting of 10-95% by weight of an aromatic alkenyl compound, 1-60% by weight of an alkenyl cyanide compound and 0-89% by weight of other copolymerizable monomers, (2) 5-40% by weight of a grafted rubbery polymer wherein 100 parts by weight of a rubbery polymer (II) is grafted with 30 parts by weight or more of a polymer of a monomer component consisting of 10-95% by weight of an aromatic alkenyl compound, 1-60% by weight of an alkenyl cyanide compound and 0-89% by weight of other copolymerizable monomers, and (3) 40-93% by weight of a styrene copolymer of a monomer component consisting of 10-95% by weight of an aromatic alkenyl compound, 1-60% by weight of an alkenyl cyanide compound and 0-89% by weight of other copolymerizable monomers. The rubber-reinforced styrene resin composition has excellent matting effect and good physical property balance in respect of heat resistance, processability and impact resistance.
Patent CA-2064615-C (CA)
Title: Process for the purification of the inert gases
Inventor: JAIN RAVI
IPC: B01D53/04
Filed: 1992-04-01
Granted: 2002-02-26
Abstract: A process for producing a substantially oxygen-free gaseous product  such  as  argon containing not more than one ppm by volume  of  oxygen  is  disclosed.    The  process  comprises introducing hydrogen into a gas stream which contains oxygen and moisture, contacting the gas stream with a dessicant to remove substantially all of the moisture therefrom, contacting the  substantially anhydrous  gas  stream  with  an  oxidation catalyst to convert substantially all of the oxygen in the gas stream to water, and contacting the resultant gas stream with a dessicant to remove the water created in the oxidation step. The product stream may be further purified to remove residual hydrogen contained therein.