baber/WOPTO huggingface dataset:
Patent CA-2012054-A1 (CA)
Title: Reinforced piston
Inventor: SKINGLE THOMAS J
IPC: C22C49/11
Filed: 1990-03-13
Abstract: ABSTRACT OF THE DISCLOSURE           A reinforced lightweight metal piston having fibers within the piston crown to reinforce the crown surface to improve  the  thermal properties and wear resistance of the crown surface. The reinforcing fibers are embedded in the piston  metal  using  a  pressure  casting  process  used  to manufacture the piston.   The  fibers are selected  from the group of aluminum silicate, alumina, silicon carbide, silicon nitride, boron, boron carbide and graphite.  The fibers can be oriented in the preform in several various directions.  The fiber reinforced portion is located around a ferrous heat plug and changes  the physical  and mechanical properties of the piston crown to more closely match those of the heat plug material to reduce cracking of the crown around the heat plug and loosening of the heat plug due to metal creep.
Patent CA-2012516-A1 (CA)
Title: Sandwich blister package for tablets and similar articles
Inventor: BUNIN LEONID
IPC: A61J1/03
Filed: 1990-03-19
Abstract: Fl TITLE OF THE INVENTION          SANDWICH BLISTER PACKAGE FOR TABLETS AND SIMILAR          ARTICLES            ABSTRACT OF THE DISCLOSURE          There is disclosed a novel sandwich blister package for tablets and similar articles which generally comprises a plastic film having a plurality of heat-formed cavities which contain tablets or similar articles; and, a plastic film/aluminum foil laminate sheet superimposed upon and heat sealed to the plastic film to form a blister card of pre-set size, each blister card being bonded to another blister card so that the aluminum foil forms the outer protective cover with the plastic film sandwiched between them.
Patent CA-2013416-A1 (CA)
Title: Suction drainage infection control system
Inventor: MIDDAUGH JAMES F
IPC: A61M1/00
Filed: 1990-03-29
Abstract: ABSTRACT OF THE DISCLOSURE         A suction drainage control system wherein waste-treating material is released into a sealed chamber.  The chamber comprises of a cover with a flexible liner sealed to and suspended therefrom.  A normally closed reservoir is provided on an underside of the cover for storing the waste-treating material therewithin as long as the reservoir remains closed.  An externally operated actuator is provided on the cover for opening the reservoir to release the waste-treating material into the sealed chamber.
Patent CA-2017164-A1 (CA)
Title: Fluid and abrasive delivery system for hyper pressure fluids
Inventor: MCLEOD RODERICK D
IPC: E21B41/00
Filed: 1990-05-18
Abstract: TITLE:  FLUID AND ABRASIVE DELIVERY SYSTEM           FOR HYPER PRESSURE FLUIDS               INVENTORS:  RODERICK D. ,cLEOD            DWIGHT LOREE           ABSTRACT            An  improved  method  and  apparatus  for introducing hyper pressure fluids and abrasives into well  bores  for  utilization  in  the  operation  of downhole tools during procedures such as reaming out of  broken  tools,  jet  perforating  of  casing  and formation and jet drilling is presented.            Hyper pressure tubing is inserted through coil tubing to a hyper pressure nozzle at one end of the coil tubing. Abrasive material may be injected into the annulus between the coil tubing and the hyper pressure tubing for delivery to the nozzle and thence mixing with  the  hyper  pressure  fluid.  The  hyper pressure fluid is injected down the hyper pressure tubing.
Patent CA-2020569-A1 (CA)
Title: Rank order processing array
Inventor: ABBOUD WILLIAM J
IPC: G01S7/32
Filed: 1990-07-06
Abstract: RANK ORDER PROCESSING ARRAY                  ABSTRACT OF THE DISCLOSURE A rank cell array for ranking a series of sample values including a number of identical rank cells (RC1, RC2 ...) permitting ready modification of the sorting window size in an OS CFAR radar application, for example.  Each rank cell (RC1, RC2 ...) includes a multiplexer (49), a D flip-flop (41), first and second comparators (43, 45), and a multiplexer controller (49).    Each clock interval, the foregoing circuitry examines the sample value entering the sorting window, the sample value leaving the sorting window, the sample value in the preceding rank cell, and the sample value in the succeeding rank cell to determine the sample value in the rank cell during the next clock interval.
Patent CA-2021814-A1 (CA)
Title: Zirconium alloy-based prosthesis with zirconium oxide or zirconium nitride coating
Inventor: DAVIDSON JAMES A
IPC: A61F2/30
Filed: 1990-07-24
Abstract: Orthopaedic implants of zirconium or zirconium-based alloy coated with blue-black zirconium oxide or zirconium nitride to provide low friction, highly wear resistant coatings especially useful in artificial joints, such as hip joints, knee joints, elbows, etc. The invention zirconium oxide or nitride coated prostheses are also useful, in that the coatings provide a barrier against implant corrosion caused by ionisation of the metal prosthesis. Such protection can be extended by the use of oxidised or nitrided porous coatings of zirconium or zirconium alloy beads or wire mesh into which bone spicules may grow so that the prosthesis may be integrated into the living skeleton.
Patent CA-2023081-A1 (CA)
IPC: A63B57/10
Filed: 1990-08-10
Abstract: A golf tee formed from a high-impact plastic has a sword-shaped shaft, an enlarged integral triangular head with a slightly concaved ball receiving area, side aprons connecting to form a front apex and a flat rear side.  The shaft has a sharpened front edge, and a gradually tapering large flat side surface, to carry printing.
Patent CA-2023105-A1 (CA)
Title: Zoned cylindrical dryer
Inventor: HANSEN DENNIS L
IPC: F26B13/00
Filed: 1990-08-10
Abstract: ZONED CYLINDRICAL DRYER               ABSTRACT OF THE DISCLOSURE A dryer used to remove a  flammable solvent or vapors from a traveling web of material supported in flotation by opposing air bars.  The dryer consists of a  large metallic cylinder through which the web of material moves longitudinally.   Seals in the ends of the metallic cylinder at the point of entry and point of exit of the traveling web provide for a control system  to  maintain  the  desired  environment  under controlled pressure within the metallic cylinder.  The web of material travels successively through one or more  zones  within  the  metallic  cylinder.    In  each drying  zone,  the  web  of  material  is  exposed  to pressurized atmosphere at predetermined temperatures.          The  solvent   is  recovered   from  the  pressurized atmosphere by rapid cooling,  membrane separation,  or absorption.   Sensors within each  zone of the dryer measure  the   oxygen  content   of   the  pressurized atmosphere.   If the oxygen content exceeds a given threshold, pressurized nitrogen or other inert gas is added.   Through the use of a carbon bed at the last zone, pressurized atmosphere from that zone is rendered sufficiently free of solvent to be exhausted to the air or to a nitrogen recovery unit, thereby maintaining the desired overall pressure within the metallic cylinder.
Patent CA-2023424-A1 (CA)
Title: Speech-recognition circuitry employing nonlinear processing, speech element modeling and phoneme estimation
Inventor: KROEKER JOHN P
IPC: G10L25/00
Filed: 1990-08-16
Abstract: A phoneme estimator in a speech-recognition system includes energy detect circuitry for detecting the segments of a speech signal that should be analyzed for phoneme content.    Speech-element processors then process the speech signal segments, calculating nonlinear representations of the segments. The nonlinear representation data is applied to speech-element modeling circuitry which reduces the data through speech element specific modeling. The reduced data are then subjected to further nonlinear processing. The results of the further nonlinear processing are again applied to speech-element modeling circuitry, producing phoneme isotype estimates. The phoneme isotype estimates are rearranged and consolidated, that is, the estimates are uniformly labeled and duplicated estimates are consolidated, forming estimates of words or phrases containing minimal numbers of phonemes. The estimates may then be compared with stored words or phrases to determine what was spoken.
Patent CA-2026842-A1 (CA)
Title: Block copolymer of polyalkylene and halogenated polystyrene
Inventor: FAVSTRITSKY NICOLAI A
IPC: C08F297/04
Filed: 1990-10-03
Abstract: ABSTRACT OF THE DISCLOSURE   A block copolymer of polyalkylene and halogenated polystyrene comprises the formula: S'-A-(A-S')m in which m is 0, 1, 2, 3 or 4, A is a saturated polyalkylene, and S' is a nuclear brominated polystyrene having from about 0.5 to about 5 bromines per styrene unit.  The polystyrene blocks are substantially free of halogen other than bromine and chlorine, and the polyalkylene is substantially free of halogen.  The compositions retain the elastomeric properties of the non-halogenated form of the compounds while having significantly reduced flammability.
Patent CA-2027241-A1 (CA)
Title: Stabilized metal salt/3-isothiazolone combinations
Inventor: LAW ANDREW B
IPC: A61K8/00
Filed: 1990-10-10
Abstract: ABSTRACT OF  THE INVENTION          A composition comprising:     (a) A 3-isothiazolone compound (b) a stabilizing amount of a metal salt, said metal salts selected from the group where the cation is copper, zinc, manganese, ferrous or ferric, and the anion is selected from the group consisting of an organic carboxylic acid of at least six carbon atoms, EDTA, 8-hydroxyquinolinate, gluconate, o-phenanthroline, quinolinate, N,N-bis(2-hydroxy-5-sulfobenzyl) glycine, lignosulfonate polymers, and polyacrylates; and (c) a locus to be protected against the growth of algae, bacteria, or fungus, selected from the group consisting of:     (i) a metal working fluid (MWF) comprising at least one component selected from the group consisting of an alkanolamine, a petroleum sulfonate emulsifier, a boric acid ester or boric acid amide, a corrosion inhibitor, and a fatty acid;     (ii) cooling tower water comprising corrosion inhibitors or scale inhibitors.     (iii) laundry dish water;     (iv) a cosmetic formulation;          (v) a fuel system;          (vi) an emulsion;        (vii) a solid protective or decorative film.
Patent CA-2027881-A1 (CA)
IPC: B65G1/04
Filed: 1990-10-17
Abstract: (1) Abstract of the Disclosure A control system for a storage and retrieval machine is disclosed in which a supervisory control means is responsive to operating commands from a remote source to provide operating instructions for the control of the base, carriage and shuttle of the storage and retrieval machine.  Control means for the base contains base operating parameters and is responsive to base operating instructions from the supervisory control means to control movement of the base in accord with the base operating instructions and the base parameters.  Control means for the carriage, which is movably mounted on a vertical mast of the storage and retrieval machine, contains carriage operating parameters and is responsive to the operating instructions to control movement of the carriage in accord with carriage operating instructions and the carriage operating parameters.  Control means for the shuttle which is mounted on the carriage, contains shuttle operating parameters and is responsive to the operating instructions to control movement of the shuttle in accord with the operating instructions and the shuttle operating parameters.  The control method includes transmitting operating commands from a remote source to the supervisory control means, transmitting operating information to the supervisory control means from the base, carriage and shuttle control means, and transmitting condition information relating to the operation of the storage and retrieval machine from sensing means on the machine through the supervisory control means.  In response, the supervisory control means produces operating instructions to the base, carriage and shuttle control means and, in turn, the base, carriage and shuttle control means produce control instructions to base, carriage and shuttle drives.
Patent CA-2032113-A1 (CA)
Title: Multifocal lens method
Inventor: BUCKLEY MILFORD L
IPC: C03B23/22
Filed: 1990-12-12
Abstract: ABSTRACT    There is disclosed a method of producing a multifocal, ophthalmic lens blank wherein a glass major element is employed that is substantially thinner than previously used major elements, except in a zone where a countersink is formed in the major element surface.
Patent CA-2033380-A1 (CA)
Inventor: SHIGA NOBUO
IPC: H03F3/193
Filed: 1990-12-28
Abstract: ABSTRACT OF THE DISCLOSURE:   In a dual gate FET of this invention, the number of points for supplying signal to a first gate electrode and the number of points for supplying signal to a second gate electrode are set to be optimal values so that a noise index is minimized.  A difference in electrical length between each signal supply point of each of the first and second gate electrodes and the corresponding gate input terminal has a negligible magnitude with respect to a quarter wavelength of an input signal applied to the corresponding gate input terminal.  The dual gate FET has a low-noise arrangement, and a microwave can be applied to either one of of the first and second gate electrodes, thereby obtaining, e.g., a low-noise mixer.  In this case, a separator required upon use of a single gate FET can be omitted, thereby easily arranging a monolithic IC.
Patent CA-2034970-A1 (CA)
Title: Carbonylation catalyst system
Inventor: DRENT EIT
IPC: B01J31/28
Filed: 1991-01-25
Abstract: A catalyst system, which comprises: a) a source of a Group VIII metal; b) a phosphine having an aromatic substituent which contains an amino nitrogen atom; c) a source of protons; and d) a tertiary amine.
Patent CA-2038150-A1 (CA)
Inventor: WUEBKER ROBERT A
IPC: F16D3/26
Filed: 1991-03-13
Abstract: ABSTRACT OF THE DISCLOSURE   A variable angle torque transmitting coupling apparatus for use in an automobile steering column as well as other applications which includes a first member which is generally T-shaped and has an elongated shaft and an elongated head each having an axis. The respective axes thereof are disposed substantially at a right angles. A second member includes a housing in which an elongated slot is disposed, the slot being dimensioned and configured for receiving the head of the first member.
Patent CA-2040035-A1 (CA)
Title: Synthesis of low viscosity non-functional terminated polymers
Inventor: BERTSCH ROBERT J
IPC: C08F20/56
Filed: 1991-04-09
Abstract: ABSTRACT           A non-functional liquid rubber is prepared by the solution polymerization of vinyl monomers.   The polymer may be a homopolymer or a copolymer.   As a copolymer the preferred monomers are a conjugated diene and a vinyl substituted nitrile such as acrylonitrile or methacrylonitrile.    A  non-functional  initiator  is employed that is either an azo initiator or a peroxide initiator.
Patent CA-2045443-A1 (CA)
Inventor: ZIELINSKI MICHAEL P
IPC: C08J11/06
Filed: 1991-06-26
Abstract: ABSTRACT Thermoplastic materials are separated and recovered, according to the present invention, utilizing a process wherein a mixture of the thermoplastic material to be recovered and one or more contaminants are simultaneously heated and agitated.  The mixture is heated to the temperature at which the thermoplastic will adhere to itself, but at which the contaminant has not become tacky. Impacting thermoplastic particles agglomerate, while the contaminant particles do not adhere to other contaminant particles or to the thermoplastic particles.  The resulting mixture is passes through a series of screens of increasing mesh size to separate the larger thermoplastic particles from the smaller contaminant particles.
Patent CA-2045759-A1 (CA)
Title: A device and method for applying adhesives
Inventor: CLARKIN WILLIAM J
IPC: B01J4/00
Filed: 1991-06-26
Abstract: The invention is directed to a device and a method for the application of any adhesive. The device comprise a hydraulically actuated mixhead which contains means to controllably deliver the components of a polyurethane based adhesive to the point of application of the adhesive and the means to separate between the components until the reaction between them is desired. Typically the components are in the form of streams and comprise an isocyanate stream and a polyol stream, the volume and flow velocity of each of which are in accordance with the invention hydraulically controlled.
Patent CA-2046370-A1 (CA)
Title: Disc brake assembly
Inventor: PAQUET J JACQUES
IPC: F16D66/00
Filed: 1991-07-05
Abstract: In a disc brake for a heavy road vehicle there is provided a mechanically preloaded brake assembly which includes a brake housing, a median wall in the brake housing parallel to the disc which is also in the housing. The disc is mounted to the adapter sleeve of the wheel, and the housing is mounted to an annular ring mounted to an axle of the vehicle. A pressure plate is provided within the housing and located between the annular intermediate wall and the housing wall opposite from the disc and is parallel thereto. The brake lining ring including a backing plate is provided adjacent a radial friction surface of the disc, and push rods extend between the pressure plate and the backing plate of the brake lining ring. A spring extends between the housing wall and the pressure plate urging the pressure plate and the brake lining ring against the friction surface of the disc, and a pneumatic bladder is provided between the pressure plate and the annular inter-mediate wall in order to overcome the urging of the spring when pneumatic pressure is supplied within the bladder.
Patent CA-2046818-A1 (CA)
Title: Passive ranging and rapid autofocusing
Inventor: SUBBARAO MURALIDHARA
IPC: G06T1/00
Filed: 1991-07-11
Abstract: Apparatus and methods based on signal processing techniques are disclosed for determin-ing the distance of an object from a camera, rapid autofocusing of a camera, and obtaining focused pictures from blurred pictures produced by a camera. The apparatus of the present invention includes a camera characterized by a set of four camera parameters:  position of the image detector or film inside the camera, focal length of the optical system in the camera, the size of the aperture of the camera, and the characteristics of the light filter in the camera. In the method of the present invention, at least two images of the object are recorded with different values for the set of camera parameters. The two images are converted to a stan-dard format to obtain two normalized images. The values of the camera parameters and the normalized images are substituted into an equation obtained by equating two expressions for the focused image of the object. The two expressions for the focused image are based on a new deconvolution formula which requires computing only the derivatives of the normalized images and a set of weight parameters dependent on the camera parameters and the point spread function of the camera. In particular, the deconvolution formula does not involve any Fourier transforms and therefore the present invention has significant advantages over prior, art. The equation which results from equating two expressions for the focused image of the object is solved to obtain a set of solutions for the distance of the object. A third image of the object is then recorded with new values for the set of camera parameters. The solution for distance which is consistent with the third image and the new values for the camera parameters is determined to obtain the distance of the object. Based on the distance of the object, a set of values is determined for the camera parameters for focusing the object. The camera parameters are then set equal to these values to accomplish autofocusing. After determining the distance of the object, the focused image of the object is obtained using the deconvolution formula. A generalized version of the method of determining the distance of an object can be used to determine one or more unknown camera parameters. This gen-eralized version is also applicable to any linear shift-invariant system for system parameter estimation and signal restoration.
Patent CA-2047391-A1 (CA)
Title: Puncture guard for needle administration set
Inventor: ROSE PETER J
IPC: A61M5/32
Filed: 1991-07-18
Abstract: Abstract of the Disclosure A puncture guard for a needle administration set having a needle assembly with a pair of flexible transverse wings includes a cylindrical sleeve which is outwardly flared at one end.  One or more transverse openings are provided through the sleeve adjacent the opposite end.   The administration set tubing is threaded axially through the sleeve with the flared end facing the needle assembly.  Upon removal of the needle from the patient, the sleeve is grasped and the tubing is pulled so that the needle assembly wings engage the flared end of the sleeve.  Further pulling of the tubing causes the wings to bend as the needle assembly is pulled into the sleeve.  Rotation of the sleeve or tubing relative to each other when the wings are registered with the transverse opening causes  the wings  to  spring  outwardly through the transverse opening, locking the needle assembly within the sleeve with the tip of the needle safely confined.
Patent CA-2047494-A1 (CA)
Title: Classifier for powdery material
Inventor: IHARA YOSHITAKA
IPC: B03B5/28
Filed: 1991-07-22
Abstract: ABSTRACT OF THE DISCLOSURE          A classifier for powdery material having a cylindrical casing formed at an upper portion thereof with an inlet port for introducing the material to be classified into the casing in a tangential direction of an inner wall thereof.          The casing has a conical portion formed in its bottom end with an opening connected to a discharge pipe for discharging coarse particles.  Further, there is provided an outlet pipe protruding into the casing through its top.          The inlet port is located higher than the bottom end of the outlet port.  An externally-driven vane wheel is provided under the outlet pipe in a concentric-relationship with respect to the casing.
Patent CA-2048298-A1 (CA)
Title: Tricyclic heterocyclic derivatives
Inventor: BUTLIN ROGER J
IPC: C07D491/04
Filed: 1991-08-01
Abstract: ABSTRACT                TITLE: TRICYCLIC HETEROCYCLIC DERIVATIVES           The invention relates to tricyclic heterocyclic derivatives, or pharmaceutically-acceptable salts or in vivo hydrolysable esters thereof, which possess anti-cancer activity.  The invention also relates to processes for the manufacture of said tricyclic heterocyclic derivatives, to novel pharmaceutical compositions containing them and to the use of said tricyclic heterocyclic derivatives in the manufacture of a medicament for the production of an anti-cancer effect.           The invention provides an optionally substituted tricyclic heterocyclic derivative of the formula I       wherein A together with the adjacent vinylene group of the 4-oxo-1,4-dihydropyrid-1-yl ring completes a benzene or pyridine ring; R1 and R2, which may be the same or different, each is (1-4C)alkyl or (1-4C)alkoxy; and R3 is hydrogen, (1-4C)alkyl or (1-4C)alkoxy; or a pharmaceutically-acceptable salt or in vivo hydrolysable ester thereof.
Patent CA-2049055-A1 (CA)
IPC: C08B11/12
Filed: 1990-03-08
Abstract: Abstract of the Invention new superabsorber which gels and cross-links as hydrated has been developed. The superabsorber contains a branched-chain polyanionic carbohydrate such as carboxymethylcellulose,a cross-linking agent, and a hydrophobic carboxylic acid. The superabsorber is biodegradable and non-toxic.