baber/WOPTO huggingface dataset:
Patent CA-1281841-C (CA)
Title: Pressure-sensitive adhesive crosslinked by copolymerizable aromatic ketone monomers
Inventor: KELLEN JAMES N
IPC: C09J7/02
Filed: 1987-05-06
Granted: 1991-03-19
Abstract: Abstract of the Invention A pressure-sensitive skin adhesive is provided which is a copolymer of an acrylate monomer which contributes to the visco-elastic properties of the copolymer and a copolymerizable mono-ethylenically unsaturated aromatic ketone comonomer free of ortho-aromatic hydroxyl groups by means of which the copolymer can be crosslinked upon exposure to ultraviolet radiation such that the amount of crosslinking comonomer and the degree of polymerization of the copolymer are controlled to obtain a creep compliance value of at least about 1.2 x 10-5 cm2/dyne, the skin adhesive exhibits an enhanced level of initial adhesion when applied to skin but resists objectionable adhesion build-up over time.  A preferred crosslinking ethylenically unsaturated hydroxyl-free aromatic ketone comonomer is p-acryloxybenzophenone.
Patent CA-1337693-C (CA)
Title: 1,2,3,6-tetrahydro-5-nitro-pyrimidine derivatives
Inventor: WOLF HILMAR
IPC: C07D521/00
Filed: 1987-05-28
Granted: 1995-12-05
Abstract: New 1,2,3,6-tetrahydro-5-nitro-pyrimidine deri-vatives of the formula   in which n represents the numbers 0, 1 or 2, R1 represents hydrogen or optionally substituted radicals from the series comprising alkyl, alkenyl, alkinyl, aralkyl and hetarylalkyl, and R2 represents dialkylamino, alkoxy, alkenyloxy, aralkoxy or optionally substituted radicals from the series comprising alkyl, alkenyl, alkinyl, cyclo-alkyl, aralkyl and hetarylalkyl, and their acid addition salts have been found. It has furthermore been found that these 1,2,3,6-te-tra-hydro-5-nitor-pyrimidine derivatives have unexpectedly high activity as insecticides, nematicides and ectoparasiticides
Patent CA-1323955-C (CA)
Title: Amphoteric water soluble polymers
Inventor: HARTAN HANS-GEORG
IPC: C08F220/06
Filed: 1987-07-21
Granted: 1993-11-02
Abstract: ABSTRACT            The present invention relates to amphoteric water soluble polymers which contain a)  90 to 30%-wt units derived from acrylic acid and/or methacrylic acid b) 10 to 60%-wt of units derived from a compound of the formula   wherein R1 stands for hydrogen or the methyl radical, R2 and R3, which are the same or different, stand for the methyl or ethyl radical, and X stands for an optionally branched alkaline radical with 1 to 5 C atoms and optionally, up to 50%-wt of units derived from acrylamido-methylpropane sulfonic acid and up to 10%-wt of units derived from a further ethylenically unsaturated compound, the molecular weight of these polymers, measured at a pH value of 8.0, being less than 100,000.  The present invention also relates to a process for producing these polymers, and their use as grinding or dispersing agents for the production of highly concentrated aqueous pigment suspensions.
Patent CA-1332007-C (CA)
Title: Process for activated-sludge treatment of sewage or industrial waste water
Inventor: FUJII MASAHIRO
IPC: C02F3/06
Filed: 1987-08-05
Granted: 1994-09-13
Abstract: ABSTRACT OF THE INVENTION      A fluidized-bed type activated-sludge treatment of sewage or industrial waste water is characterized in that: a fine powder of the granulated blast furnace slag is added to an aeration tank of the activated-sludge treatment installation to facilitate the treat-ment.  In a fixed-bed type activated-sludge treatment of the sewage or industrial waste water, the granulated blast furnace constitutes a main constituent element of a ceramic material to be mounted in the aeration tank so as to serve as a fixing carrier of the activated sludge.
Patent CA-1303600-C (CA)
Title: Gear oil composition
Inventor: SUZUKI KUNIAKI
IPC: C10N40/04
Filed: 1987-08-26
Granted: 1992-06-16
Abstract: ABSTRACT OF THE DISCLOSURE A gear oil composition comprising as a base oil at least one polyoxyalkylene glycol having a viscosity of from 5 mm2/s at 100° C and derived from at least one monomer comprised of alkylene oxides containing from 2 to 4 carbon atoms.
Patent CA-1308994-C (CA)
Title: Three dimensional woven fabrics of pitch-derived carbon fibers
Inventor: SUTO YOSHINORI
IPC: D03D25/00
Filed: 1987-11-06
Granted: 1992-10-20
Abstract: ABSTRACT OF THE DISCLOSURE      Three dimensional woven fabrics-containing, at least as one component thereof, the carbon fibers obtained by thermosetting treatment and carbonization treatment carried out after melt-spinning of high softening  point pitch and having a tensile strength of 15 -250 Kgf/mm2, elongation of 0.5 -8.0% and modulus of elasticity of 400 -40,000 Kgf/mm2 and a capability of increasing both of their tensile strength  and modulus of elasticity to 1.1 times or more of the values before additive heat-treatment by way of the additive heat-treatment carried out under a relaxed state of the said carbon fibers are provided, whereby carbon fibers having a tensile strength of 150 Kgf/mm2 or more and a modulus of elasticity of 40,000 Kgf/mm2 or more are attained.  They are superior in abrasion-resist-ing property, flexion-resisting property and scratch-resisting property and useful as one component of fiber composite materials in reinforcing plastics,metals, cements, ceramics, carbon materials, etc.
Patent CA-1289032-C (CA)
Title: Vasodilating catheter
Inventor: SUGIYAMA YOSHIAKI
IPC: A61F2/958
Filed: 1987-12-23
Granted: 1991-09-17
Abstract: ABSTRACT OF THE DISCLOSURE A  vasodilating  catheter  is disclosed  which  is characterized  by  using  a  triple-flow   catheter  tube and allowing two of the three flow paths formed by the catheter tube  to  communicate  with  a  balloon.    Owing  to  this configuration, the air entrapped inside the balloon can be easily removed and, as the result, the otherwise inevitable degradation  of  the  balloon's  opacitying  property  is precluded and the angioplasty is performed with increased safety and ease.
Patent CA-1299238-C (CA)
Title: Cathode coating dispersion for batteries
Inventor: PERIARD JACQUES
IPC: H01M2/02
Filed: 1988-01-13
Granted: 1992-04-21
Abstract: ABSTRACT OF THE DISCLOSURE           A cathode coating dispersion containing graphite and/or carbon black is disclosed which is suitable for battery  production,  especially  for  forming  a  water-resistant  and  alkali-resistant  and  yet  electrically conductive coating on the cathode surfaces.  The protective film is applied as a homogeneous aqueous dispersion and contains a binder which is a copolymer of (a) vinyl acetate and ethylene, or (b) vinyl acetate and vinyl chloride, or (c)  styrene and butadiene or  (d)  vinyl acetate,  vinyl chloride and ethylene.
Patent CA-1336698-C (CA)
Title: Corrosion resistant plated steel strip and method for  producing same
Inventor: KANAMARU TATSUYA
IPC: C25D3/56
Filed: 1988-03-30
Granted: 1995-08-15
Abstract: A corrosion resistant plated steel strip comprises a substrate consisting of a steel strip; a principal plating layer is formed on one surface side or each of two surface sides of the steel strip sub-strate; a co-deposited zinc-chromium based alloy com-prises chromium in an amount of more than 5% by weight but no more than 20% by weight and the balance con-sisting of zinc; an additional plating layer formed on the principal plating layer comprises at least one member selected from the group consisting of iron and iron-based alloys.
Patent CA-1325048-C (CA)
Inventor: ROGERS CLARENCE L JR
IPC: G01M17/02
Filed: 1988-06-30
Granted: 1993-12-07
Abstract: ABSTRACT      A tire uniformity machine to process rubber pneumatic tires by sensing their force variations while they are rotating and then grinding rubber therefrom in selected amounts and regions corresponding to the sensed force variations.  The machine processes such tires more rapidly than previous machines, and includes mechanical means to rotate the tire at a speed higher than the industry standard of 60 revolutions per minute and rotate the tire at a lower speed to selectively grind rubber therefrom.  A sensor is provided to detect force variations in the tire while rotating at the higher speed and, in response thereto, to produce frequency modified electrical signals corresponding to the detected force variations at a frequency higher than the industry standard of 60 cycles per minute.          Rubber removal means are also provided for selectively removing rubber from the rotating tire at the lower speed.  A summer amplifier is provided to receive and filter the produced signals from the sensor and to forward such filtered signals to a microprocessor which interprets such filtered signals, stores such interpreted signals, and activates the mechanical means and the rubber removal means in a programmed manner in accordance with such stored signals.
Patent CA-1308134-C (CA)
Title: Shopping trolley provided with a pivoting basket
Inventor: LE MARCHAND ALAIN
IPC: B62B3/18
Filed: 1988-07-07
Granted: 1992-09-29
Abstract: ABSTRACT OF THE DISCLOSURE         A shopping trolley is provided at the top with a horizontal carrier trolley pivotally mounted on its frame in such a manner as to permit withdrawal to a vertical position at the rear end of the trolley by means of two lateral guides.  Trunnions which are carried by the sides of the pivoting basket and which define its horizontal axis of pivotal displacement are engaged within the guides.  These guides are inclined in such a manner as to ensure that their lower ends are placed further forward than their upper ends so that in the vertical position of withdrawal, the pivoting basket is placed between the two lateral uprights of the handle-bar frame without projecting behind this frame.  In addition, the trolley basket is closed at the rear end by a flap which is freely mounted for pivotal displace-ment at its top edge.  Trolleys of this type can be interengaged in readiness for use when their carrier baskets are placed either in a horizontal position or in a withdrawn position.
Patent CA-1296386-C (CA)
Title: Power converter control circuit
Inventor: YAMAMOTO YUSHIN
IPC: H02M7/06
Filed: 1988-09-29
Granted: 1992-02-25
Abstract: ABSTRACT OF THE DISCLOSURE    A control circuit for an a.c. to d.c. power converter, in which the load current of the power converter is detected and averaged, and it is added to the voltage control signal of the voltage control system which controls the converter output voltage to be constant, so that the converter control is less affected by the ripple of the load current.
Patent CA-1302472-C (CA)
Title: Stepper motor and method of making the same
Inventor: HANSEN CHARLES
IPC: H02K37/14
Filed: 1988-09-29
Granted: 1992-06-02
Abstract: ABSTRACT OF THE DISCLOSURE         A multi-phase  stepper motor having an annular permanent magnetic rotor and a plurality of matingly engageable stator phase assemblies around the rotor.  Each of the phase assemblies comprises a pair of annular pole pieces including interleaved salient stator poles.  The stator pole pieces in each pair are mated together in an opposed relationship to form an annular space between them to receive an energizing winding, and the winding for each pair is of a different phase.  Depending upon the number of phase assemblies, the machine can operate in more than two phases.  The diameter of the rotor is between about 55 percent and about 75 percent of the motor diameter, and approximately 40 percent more torque is produced than with equivalent sized conventional motors.
Patent CA-1320978-C (CA)
Title: Elastomeric combined seal and spring
Inventor: BOYD RICHARD M
IPC: F16J15/54
Filed: 1988-09-30
Granted: 1993-08-03
Abstract: ELASTOMERIC COMBINED SEAL AND SPRING                        ABSTRACT          An elastomeric combined seal and spring formed of uniformly  resilient  flowable  rubber-like  material  and comprised of a one-piece annular body of uniform cross-sectional  configuration throughout, which is of generally right angled polygonal shape and having a pair of opposed concave working surfaces spaced a distance only 60%-75% of its maximum radial dimension, measured at its corners, and its convex corners having a convexity of only 14%-16% of said maximum radial dimensions, the concavity of said sur-faces being 17%-33% of said dimensions, thereby providing an elastic seal which will function as a forgiving spring in support of a self-adjusting,  self lubricating split ring annular bearing and thereby perfect a lasting seal against  an  annular  surface while  the  latter  is moving relative thereto at high speeds for prolonged periods.
Patent CA-1281971-C (CA)
Inventor: BELLAH GLEN R
IPC: F16H61/22
Filed: 1988-10-03
Granted: 1991-03-26
Abstract: ABSTRACT OF THE DISCLOSURE A manually operable creep control mechanism for a tractor of the like having multiple direct drive gears and a creep clutch.  The mechanism comprises an elongated arm pivotally mounted on the control box cover plate adjacent the slot through which the gear shift lever travels to shift into the direct drive gear positions.  In a first position, the arm is clear of the slot and the gear shift lever is free to move through the entire range of gear positions, while preventing inadvertent pivoting of the arm out of the first position once the lever is in a predetermined low gear, such a fourth.  When pivoted to a second position, the arm lies across the slot and limits shifting of the lever to a predetermined higher gear, such as twelfth, while preventing inadvertent movement of the arm out of the second position once the lever is at or beyond the fourth gear position.  A flexible switching cable is connected to the arm and an electrical switch for actuating the creep clutch.  When the arm is in the first position, the switch is off and when the arm is in the second position the switch is on.
Patent CA-1319588-C (CA)
Title: Method of making single-crystal mercury cadmium telluride layers
Inventor: BERNARDI SERGIO
IPC: C30B19/00
Filed: 1988-10-05
Granted: 1993-06-29
Abstract: Abstract A method is described of forming single crystal mercury cadmium telluride layers by epitaxial growth on a cadmium telluride substrate, performed inside a reactor with two communicating zones, kept at different and controlled temperatures.  A growth solution is directly prepared inside the reactor by melting a weighed quantity of tellurium in one zone, vaporizing mercury in the other zone so that mercury vapour is absorbed by the molten tellurium, contacting the latter with solid cadmium telluride so as to saturate the solution, and removing the solution from contact with the solid cadmium telluride. The solution is cooled to produce supersaturation, and contacted with the substrate to produce epitaxial growth.
Patent CA-1304858-C (CA)
Title: Wiper blade compositions
Inventor: THEODORE ARES N
IPC: C08K3/04
Filed: 1988-10-12
Granted: 1992-07-07
Abstract: Abstract of the Disclosure This invention relates to an environmentally durable composition which has excellent low temperature dynamic properties.  The composition comprises a substantially homogeneous mixture of 100 parts by weight elastomer having a fully saturated backbone, curing agent for the elastomer in amounts sufficient to crosslink the elastomer, reinforcing particulate filler, at least 20 parts by weight of an aliphatic oil and paraffinic oil and/or naphthenic oil.  Inclusion of the naphthenic oil and/or paraffinic oil with the aliphatic oil improves the overall properties and processability of the elastomer composition.  Particulate graphite may be incorporated into the composition to lower its friction.
Patent CA-1335194-C (CA)
Inventor: PEPPIATT HARRY R
IPC: B65D33/10
Filed: 1988-10-25
Granted: 1995-04-11
Abstract: The present invention is directed to a bag having an outer unitary piece of flexible plastic material including generally rectangular front and rear plastic panels and a gusset connecting the panels at a first end portion of the bag,  and an inner unitary piece of flexible plastic material including generally rectangular front and rear panels and a gusset connecting the last-mentioned panels at the first end portion of the bag.   The ends of the inner and outer unitary pieces of flexible plastic material opposite the first end of the bag are open to facilitate introducing goods into the bag.   The side edges of the gussets and the panels are connected together so that the bag when filled can approximate the shape of a hexahedron with the gusset of said outer piece of flexible plastic material being flattened and closing the first end portion of the bag.  At least a portion of the outer unitary piece is frangible so as to facilitate access to the goods in the bag and thereafter permit reuse of the bag.   A closure device is connected to the outer unitary piece so as to prevent access to the goods in the bag when the closure device is closed and for facilitating access to the goods in the bag when the closure device is opened.
Patent CA-1314121-C (CA)
Title: Wet and dry vacuum cleaner
Inventor: BOSYJ NICK M
IPC: A47L5/24
Filed: 1988-11-07
Granted: 1993-03-09
Abstract: Hoover Case 2285 A WET AND DRY VACUUM CLEANER                            ABSTRACT           A filter, separator and seal arrangement is disclosed for a wet and dry hand held vacuum cleaner.  A cup-shaped filter is provided which is elongated to provide a large area for enhancing sustained air performance of the cleaner with the filter being disposed within a liquid separator so as to be generally coextensive therewith.  A connection arrangement is also provided between the filter and separator so as to provide an air tight and liquid tight connection therebetween but which is also easily separable to facilitate cleaning of the two devices.
Patent CA-1292660-C (CA)
Title: Fluid-power bearing actuator
Inventor: WEYER PAUL P
IPC: B60G21/055
Filed: 1988-11-15
Granted: 1991-12-03
Abstract: FLUID-POWER BEARING ACTUATOR                      Abstract of the Disclosure A fluid-powered rotary actuated support for a plat-form, having a body with a vertical axial orientation during use.   A drive member has a drive shaft extending coaxially within the body and a flange attached to an end portion of the shaft toward an upper body end.  The shaft and flange are formed as an integral unit free of connection joints there-between.  The flange projects radially outward from the shaft beyond an inner body surface and is rotatable relative to the body through a   horizontal plane.   A first ball  race  is formed in the flange and a second ball race is formed in the body  with  balls  disposed  therebetween.    Linear-to-rotary transmission means disposed within the body are operable for providing rotational movement between the drive member  and body.  The body utilizes a stationary seal to facilitate seal placement and reduce the overall length of the body.   In one embodiment,  the transmission means includes a plurality of rollers  each  having  at  least  two  roller  disks  adjustably axially movable relative to each other within a limited range for backlash elimination purposes.  The rollers are rotatably disposed on spindles, each having a free end portion attached to an annular support plate and an opposite end portion rota-tably disposed in a piston sleeve bore hole for rotational adjustment of the spindles to axially move the support plate and apply an axial force on the roller disks.
Patent CA-1323607-C (CA)
Title: Fibrous microwave susceptor package
Inventor: FONG DAN S C
IPC: A23L13/50
Filed: 1988-12-06
Granted: 1993-10-26
Abstract: ABSTRACT A package for uniform microwave cooking of a food item such as an egg roll, which requires surface browning or crispening, comprises a drapable, liquid permeable, microwave susceptive composite material draped around the food item, and a paper board holder having at least one cutout portion into which the wrapped food item nestles.
Patent CA-1331213-C (CA)
Inventor: FISCHER ADDISON M
IPC: G06Q20/02
Filed: 1988-12-15
Granted: 1994-08-02
Abstract: ABSTRACT       A public key cryptographic system is disclosed with enhanced digital signature certification which authenticates the identity of the public key holder. A hierarchy of nested certifications and signatures are employed which indicate the authority and responsibility levels of the individual whose signature is being certified.  The present invention enhances the capabilities of public key cryptography so that it may be employed in a wider variety of business transactions, even those where two parties may be virtually unknown to each other. Counter-signature and joint-signature requirements are referenced in each digital certification to permit business transactions to take place electronically, which heretofore often only would take place after at least one party physically winds his way through a corporate bureaucracy.  The certifier in constructing a certificate generates a spacial message that includes fields identifying the public key which is being certified, and the name of the certifiee. In addition, the certificate constructed by the certifier includes the authority which is being granted including information which reflects issues of concern to the certifier such as, for example, the monetary limit for the certifiee and the level of trust which is granted to the certifiee.  The certificate may also specify cosignature requirements which are being imposed upon the certifiee.
Patent CA-1310717-C (CA)
Title: Inspecting glass containers for line-over finish defects
Inventor: CLAYPOOL MARK P
IPC: G01N21/90
Filed: 1988-12-28
Granted: 1992-11-24
Abstract: ABSTRACT   INSPECTING GLASS CONTAINERS FOR   LINE-OVER FINISH DEFECTS     Apparatus for detecting line-over defects at the finish of a glassware container.  A bifurcated fiber optic bundle includes sender and receiver fiber branches; one of the branches terminates at a modu-lated visible red high intensity LED light source, the other at a photosensor.  The non-bifurcated, probe end of the fiber optic cable terminates in a rectangular pattern of sending and receiving fibers in a random mix. The probe end of the fiber optic bundle is positioned directly over the container finish and pointed straight down.  An intervening lens assembly produces a focused 1:1 image of the rectangular pattern at the bottle finish with the long axis of the rectangle oriented radially across the finish.  An electronic assembly modulates the LED, demodulates the photodetector output, and de-tects sharp reductions in the intensity of light reflected back to the receiver fibers, indicative of line-over defects.
Patent CA-1315823-C (CA)
Inventor: CLAY STANTON T
IPC: B42D15/10
Filed: 1988-12-28
Granted: 1993-04-06
Abstract: ABSTRACT OF THE DISCLOSURE         There is disclosed a unique tamperproof security card comprised of a transparent upper layer having narrow parallel lenses on the outer surface, and an image containing substrate, said two layers forming a lenticular system by which images on the substrate are selectively visible depending upon the angle from which the card is viewed.  By incorporating into a selectively visible image the information necessary to verify the identity of the cardholder, e.g. the cardholder's photograph or signature, the card may be rendered substantially tamperproof.
Patent CA-1330926-C (CA)
Inventor: WATANABE IKUO
IPC: C11D7/50
Filed: 1989-01-11
Granted: 1994-07-26
Abstract: WASHING SOLUTION AND COLOR-CHANGE WASHING METHOD             ABSTRACT OF THE DISCLOSURE      A washing solution for a color-change washing which contains a medium-boiling and/or high-boiling true solvent having a boiling point of 100°C or more, and a color-change washing method using that washing solution. In rotary type electrostatic spray coating devices in which a non-aqueous dispersion paint and a titanium dioxide pigment-incorporated paint are used in combina-tion, the washing solution and method are advantageously used as they remove contamination and clogging of the coating device and reduce fire hazards.