baber/WOPTO huggingface dataset:
Patent CA-2140437-A1 (CA)
Title: Apparatus and method for frequency translation in a communication device
Inventor: TRAYLOR KEVIN B
IPC: H03M1/74
Filed: 1994-05-16
Abstract: A digital-to-analog (D/A) convertor (206) multiplies an input signal by a sinewave approximation (300) to perform frequency translation. Optimized coefficient values are predetermined and are programmed based on a control word generated during a clock cycle. The programming over a time period representative of the frequency of the sinewave approximation (300) provides a signal that multiplies an input signal such that the effects of odd harmonics at an output are mitigated while the advantages of a traditional switching mixer are retained. In one embodiment the multiplying D/A convertor (206) includes a plurality of resistors (Rl-R8) connected to an amplifier (400), with plural switching gates (G1-G8) switching select resistors (R1-R8) in and out of operation, a control word from counter/controller (203) controlling the gates (G1-G8).
Patent CA-2141571-A1 (CA)
Title: Process for Making Silicone Containing Hydrogel Lenses
Inventor: BAWA RAJAN S
IPC: G02C7/04
Filed: 1993-06-17
Abstract: A process for preparing silicone hydrogel contact lenses where machining operations are employed to produce a lens having a desired final shape comprises: providing a monomeric mixture comprising a silicone-containing monomer, a hydrophilic monomer and an organic diluent; charging the mixture to a mold and curing the formulation in the mold to obtain a shaped article; removing organic diluent from the shaped article to improve machineability of the article; and machining the shaped article to obtain a contact lens having a desired configuration.
Patent CA-2144694-A1 (CA)
Inventor: ARPIN BENOIT
IPC: H01B7/295
Filed: 1995-03-15
Abstract: A telecommunications cable having a cable core in which each conductor is surrounded by an individual dual layer insulation of an inner layer of flame retardant polyolefin and an outer layer of fluorinated ethylene propylene. The cable is for plenum chamber usage in which corrosive smoke is to be minimized. Although the flame retardant polyolefin is a known corrosive smoke generating substance, its use in this structure is entirely suitable for plenum chamber use because little or no corrosive smoke is actually generated as the outer layer protects the inner layer from combustion.
Patent CA-2144760-A1 (CA)
Title: Magnetic therapeutic apparatus
Inventor: MASUDA ISAMU
IPC: A61N2/02
Filed: 1993-07-21
Abstract: This invention relates to a magnetic therapeutic apparatus for performing the magnetic therapy by exerting magnetic fields over a wide range of a human body.         A  magnetic  therapeutic  apparatus  of  this  invention  is consisting  of a mounting base and a plurality of magnetic field generators (10) which are configured by connecting flexibly with each other in one row, a plurality of cases each housing solenoids therein, with  the magnetic pole faces orienting in the same direction.  A plurality of magnetic field generators (10) are disposed in parallel on the mounting base, with their magnetic pole faces aligning.    Besides the magnetic fields, vibration and heat are generated from the magnetic field generators (10), and these are exerted on a wide range of a human body,  thereby providing a useful effect of the magnetic therapy.
Patent CA-2147737-A1 (CA)
Inventor: BONACINA GUIDO RICHARD
IPC: G01N35/02
Filed: 1995-04-24
Abstract: An analyzer comprising the following components: a horizontally disposed baseplate (12) on which primary containers (13 and 23) and secondary containers (31) are disposed; a pipetting needle (42) consisting of an electrically conductive material and connected to a metering device (96) by a tubing (99), for transferring a predetermined volume of liquid each time from a primary container (13 and 23) to a secondary container (31); a transport device (51 - 55) for the controlled transport of the pipetting needle (42) in three directions at right angles to one another (the X, Y and Z directions), two of the transport directions (X and Y directions) extending horizontally and the third transport direction (Z direction) extending vertically; and a control device for controlling the metering device (96) and the transport device (51 - 55). For the purpose of testing the linearity of the pipetting needle (42) the analyzer further comprises the following means: means for guiding the tip of the pipetting needle (42) around the periphery of the top edge of a reference body (45), the tip of the pipetting needle (42) being guided at a specific distance (d) from the top edge of the reference body (45), which distance is a measure of the acceptable curvature of the pipetting needle, and an electrical circuit for detecting an electrical contact between the tip of the pipetting needle (42) and the reference body (45).
Patent CA-2147987-A1 (CA)
Title: Method and apparatus for generating a three-dimensional effect for two-dimensional images
Inventor: DASSO JOHN M
IPC: G02B27/22
Filed: 1993-12-09
Abstract: 2147987 9414285 PCTABS00032 A method and apparatus (29, 50) for creating an illusion of depth when viewing moving pictures (20) projected on a plane surface (29). Glasses (50) worn by a viewer when viewing the moving pictures have the property of altering or distorting (60, 62) the real image projected. The disparity between the apparent images viewed by the two eyes creates an image disparity that is interpreted as a perception of depth. The glasses (50) incorporate a lens (52) for the dominant eye and a lens (54) for the docile eye. The lens (52) for the dominant eye narrows the image along the visual plane and the lens (54) for the docile eye broadens the image along the visual plane. The lens for each eye is appropriately tinted to enhance the perception of depth. The glasses (50) are reversible to enable placing the desired lens in front of the dominant and thus the docile eye.
Patent CA-2149641-A1 (CA)
Title: Methods for converting a, ab and b blood types to o blood type
Inventor: BERKA RANDY M
IPC: A61K35/18
Filed: 1993-11-08
Abstract: A process for producing .alpha.-N-acetylgalactosaminidase by expressing a DNA sequence derived from human placenta encoding .alpha.-N-acetylgalactosaminidase in a recombinant host microorganism transformed with an expression vector containing DNA sequence and isolating transformants having .alpha.-N-acetylgalactosaminidase expression. The isolated transformants are then cultured and .alpha.-N-acetylgalactosaminidase is purified from the culture media. The recombinantly produced .alpha.-N-acetylgalactosaminidase is used to convert A, B and AB blood types into O blood type.
Patent CA-2149860-A1 (CA)
Title: Systems and methods for transmitting pulse signals
Inventor: MILLGARD LARS
IPC: H05B47/23
Filed: 1993-11-19
Abstract: The invention relates to a method and system for communicating from the secondary side of an isolation transformer (6) to receiver means, the primary ofsaid transformer being connected via a power cable to a circuit fed with a periodic voltage from a constant-current generator, said receiver means being connected to said circuit. More particularly, switch means (30) are arranged for generating communicating signals by momentarily affecting the impedance on the secondary side so as to generate one or more voltage pulses on the primary side (8) of thetransformer for propagation along the cable to said receiver means.
Patent CA-2150340-A1 (CA)
Inventor: KUREMATSU KATSUMI
IPC: F21V8/00
Filed: 1995-05-26
Abstract: A backlight device suitable for illuminating a transmission-type display device, such as a liquid crystal device, is constituted by a reflection member (10) for reflecting light, a transmission member (11) disposed opposite to the reflection member (10) so as to form a space (S) from the reflection member (10), and a light source (1) disposed to emit light into the space (S). Light issued from the light source (1) into the space (S) is reflected by the reflection member (10) and transmitted through the transmission member (11). The transmission member (11) is preferably provided with a reflection layer (12) having apertures (13) having an aperture ratio which increases with an increase in distance from the light source (1) toward a centre of the space (S) as a linear function, a hyperbolic function or a function intermediate therebetween of the distance from the light source (1). Between the transmission member (11) and a display device, a prism sheet (16,17) and/or a diffusion sheet may be disposed so as to improve the frontal illumination performance. <IMAGE>
Patent CA-2150873-A1 (CA)
Inventor: ISHIZAKA YUJI
IPC: B23K37/00
Filed: 1993-02-16
Abstract: A welding management apparatus for use with a tube production machine including first means for forming a workpiece fed from a roll of metal strip in a tubular formation having side surfaces opposite to each other, second means for providing an upsetting pressure to joint the opposite side surfaces of the workpiece at a jointing point, and third means for supplying a high frequency power to the workpiece to weld the opposite side surfaces at the jointing point so as to produce a metal tube member.   The welding management apparatus comprises a camera positioned to have a visual field including the jointing point for producing a video signal indicative of an  image  including  an  area  luminous  with  a  pre-arc produced in the visual  field;  an image processor for converting the video signal into a luminance distribution pattern; and an inference unit for inferring a defective welding condition based upon the luminance distribution pattern.  The inference unit includes means for producing an alarm when a defective welding condition is inferred.
Patent CA-2151960-A1 (CA)
Title: System for analysing substances at the surface of an optical sensor
Inventor: FATTINGER CHRISTOF
IPC: G01N21/55
Filed: 1994-11-14
Abstract: The proposed system for analysing substances at or close to the surface of an optical sensor comprises at least one waveguiding layer and at least one multi-diffractional grating coupler for the in- and outcoupling of light beams. Into the said coupler are directed at least two light beams at an angle .alpha. to each other, and from the coupler at least two light beams emerge at an angle to each other. The system also includes a detection system for capturing the emergent light beams. Light beams enter and emerge from the sensor on the same side, the entry and emergent beams being in different quadrants of the light-incidence plane; the angle .alpha. between the entry beams is greater than the angle  between the emergent beams. The system can be widely used for determining physical or chemical variables on the basis of the interaction of the guided light waves with the medium at or close to the sensor surface.
Patent CA-2154736-A1 (CA)
Title: Methods and apparatus for armature testing
Inventor: DOMENICHINI CARLO
IPC: G01R31/06
Filed: 1995-07-26
Abstract: An improved armature testing apparatus and method are provided.  The individual resistances of two commutator bar lead connections can be simultaneously measured in a single measurement step.  Further, the resistances of two armature coil can be determined in the same step.  The present invention makes it possible to measure individual commutator coil lead connections more quickly than was previously possible.
Patent CA-2156280-A1 (CA)
Title: Process for the preparation of methylenecyclopropane
Inventor: BINGER PAUL
IPC: C07C1/30
Filed: 1994-09-28
Abstract: The object of the invention is a novel process for the production of methylenecyclopropane from 3-halogen-2-methyl-1-propene (.beta.-methallyl halogenide). By reacting .beta.-methallyl halogenides with an alkali metal-bis- (trialkylsilyl)-amide, optionally in the presence of an alkali metal alcoholate and/or a corresponding alcohol, methylenecyclopropane is obtained in a high yield, combined with a low or negligible amount of 1-methyl-cyclopropene.
Patent CA-2157060-A1 (CA)
Title: Resealable paint tray
Inventor: POLZIN BRUCE C
IPC: B44D3/12
Filed: 1995-08-28
Abstract: A resealable paint tray assembly composed of a lid and tray formed as separate components and means for locking the lid to the tray to prevent skin forming on paint left for extended periods in the tray, the tray having a smooth uninterrupted inside and outside surface, the tray assembly having a brush rest section usable only when the tray assembly is open and in use.
Patent CA-2158321-A1 (CA)
Title: Image carrier material for electrophotographic processes
Inventor: EBISCH ROLF
IPC: G03G7/00
Filed: 1995-09-14
Abstract: This invention describes an image carrier material for electrophotographic processes which provides images similar to photographs and is built up from at least five layers. A base paper is coated on both sides with thermoplastic materials and in addition bears an antistatic layer on the reverse side and a receiving layer for the toner image on the front side.
Patent CA-2158483-A1 (CA)
Inventor: HARPER HAROLD M
IPC: F04B39/00
Filed: 1995-09-18
Abstract: A hermetic compressor including a suction muffler disposed opposite the suction inlet tube. A funnelled or countersunk inlet port on the muffler permits semi-direct refrigerant flow into the muffler, creating enhanced cooling of the motor and higher compressor efficiency.  Baffle walls disposed parallel and on opposite sides of an internal standpipe within the suction muffler create an increased resonator effect with optimum refrigerant throughput.
Patent CA-2163179-A1 (CA)
Title: Thermally activated two-way valve
Inventor: GERSTENBERGER GERALD
IPC: F15B21/045
Filed: 1995-11-17
Abstract: A two-way thermally activated valve is configured within a valve body having a bore therethrough which communicates with an inlet port, an outlet port and an exhaust port. A valve spool is disposed within the bore. The valve spool has a relieved portion which permits continual com-munication between the inlet port and outlet port regardless of the position of the valve spool. When the valve spool is in a first mode, the exhaust port is in communication with the bore and, when the valve spool is a second mode, the exhaust port is blocked. Since the inlet and outlet ports are never blocked, pressure builds at the outlet port as the exhaust port closes. The valve is shifted from the first position to the second position as a thermally expandable wax element pushes the spool axially against the bias of a coil spring. The two-way thermally activated valve is used to cause high pressure fluid to operate a fan driven by a hydraulic motor when the exhaust port of the valve is closed by allowing the high pressure fluid to flow to the tank only as exhaust from the motor when the tempe-rature level is sufficient to expand the wax plug. When the wax plug is unexpanded because the oil is cooled, the oil flows through the exhaust port of the valve to tank and, therefore, does not allow sufficient pressure to build in the outlet port of the valve to drive the motor.
Patent CA-2163984-A1 (CA)
Title: Epoxy adhesive composition for bonding oily metal
Inventor: MARHEVKA VIRGINIA C
IPC: C09J163/00
Filed: 1994-02-24
Abstract: This invention comprises a two-part epoxy adhesive composition. The composition comprises an epoxy resin having an average epoxide functionality of greater than one and an oligomeric polyester which is on average, terminated by at least two hydroxyl groups.
Patent CA-2167651-A1 (CA)
Title: Biologically highly active bicyclic aromatic compositions; pharmaceutical and cosmetic compositions containing the same and their use
Inventor: BERNARDON JEAN-MICHEL
IPC: A61K8/00
Filed: 1996-01-19
Abstract: Bicyclic aromatic derivs. of formula (I) and their salts and optical and geometric isomers are new. R1 = H, Me, CH2OR6, OR8, COR10 or SOpR12; provided that R1 = OR8 only when R2+R4 form a fused benzene ring; R2 = H, lower alkyl, OH, OR7, OCOR7, amino or NHCOR7; R3 = H or lower alkyl; or R2+R3 = a bond; R4 = H, 1-20C alkyl, OH, OR7 or OCOR7; or R2+R4 forms a fused benzene ring; R5 = H, halo, lower alkyl, NO2, OH, OR7, OCOR7 or NR13R14; X = O, SOt or NR12; Y, Z = CR13R14, O or SOt; provided that not both are SOt or O; R6 = H, lower alkyl or COR7; R7 = lower alkyl; R8 = H, lower alkyl or (CH2)m(CO)nR9; R9 = lower alkyl or heterocyclyl; R10 = H, lower alkyl, OR11 or NR'R''; R11 = H, 1-20C alkyl, alkenyl, mono- or polyhydroxy-alkyl, opt. substd. aryl, opt. substd. aralkyl or a sugar, aminoacid or peptide gp.; R12 = H or lower alkyl; R13, R14 = H or lower alkyl; m = 1-3; n = 0-1; p = 0-3; t = 0-2; R', R'' = H, lower alkyl, mono- or polyhydroxy-alkyl, opt. substd. aryl or an aminoacid or sugar gp.; or NR'R'' = heterocycle; alkyl gps. contain 1-20C; lower = 1-12C.
Patent CA-2169321-A1 (CA)
Title: Method of producing composite materials, stratiform composites, and containers made therefrom
Inventor: COLOMBO GIAN CARLO
IPC: B29C48/49
Filed: 1996-02-12
Abstract: A composite stratiform material (1) having at least three interfused layers and comprising: (I) a carrier layer (10) formed of a mixture containing polypropylene and a particulate organic filler; (II) a first outer layer (12) interfused with said carrier layer at a first interface (11) and consisting essentially of a mixture containing polypropylene and an inorganic filler;  and (III) a second outer layer (14) interfused with said carrier layer at a second interface (13) located opposite said first interface (11) and consisting essentially of a mixture containing polypropylene and an inorganic filler.
Patent CA-2169844-A1 (CA)
Inventor: ADAMS HAROLD F
IPC: E04F15/024
Filed: 1994-08-17
Abstract: Système de plancher surélevé et procédés de formation de ses composants. Les systèmes correspondant aux formes de réalisation de l'invention utilisent des plaques de base (14) en tôle mince, habituellement en acier galvanisé, disposées côte à côte sur un plancher existant. Des pièces d'écartement (18) fixées selon un dessin rectiligne aux plaques de base (14) soutiennent les panneaux de plancher (qui sont habituellement recouverts à leur tour de dalles de moquette) pour former un plancher surélevé ou faux plancher. Outre le soutien des panneaux de plancher, les pièces d'écartement (18) forment un réseau de canaux dans lesquels des conduites, des câbles, des tuyaux, des tubulures ou des équipements similaires peuvent passer. Les pièces d'écartement (18) sont découpées à l'emporte-pièce puis formée dans de la tôle mince, habituellement de l'acier galvanisé ici aussi, et leur forme générale est celle d'un cône tronqué terminé par quatre bras dont les bords sont laminés afin d'améliorer leur capacité sous charge.
Patent CA-2171445-A1 (CA)
Title: Mounting structure for a pressure vessel window
Inventor: RENEAU RAYMOND PAUL
IPC: A61G10/02
Filed: 1994-09-07
Abstract: This invention is a mounting structure (M) for a cylindrical window section (W) of a pressure vessel (V), wherein the mounting structure includes a cylindrical outer band (O), a mouting block (B) mountable within the cylindrical outer band, securing members (G) for securing the outer band and mounting block a predetermined fixed axial distance from the end portion of the pressure vessel, and a seal member (S) for axial movement with respect to the outer band for maintaining sealable engagement of the cylindrical window section between the seal member and the end portion of the pressure vessel.
Patent CA-2171592-A1 (CA)
Inventor: BUCHANAN KARL H
IPC: B01D29/11
Filed: 1996-03-12
Abstract: A filter element surface is coated with particulate polyamide which serves as a filter aid to trap polyamide oligomers suspended in water. The particulate polyamide is preferably coated onto a surface of a bag filter so that polyamide oligomers flowing through the coated bag filter surface will adhere to the polyamide particles forming an oligomer cake thereon which encapsulates the polyamide particles. Momentarily equalizing the pressure differential across, or reversing flow through, the coated bag filter surface (i.e., back-pulsing) will cause the oligomer cake and polyamide particles encapsulated thereby to break into relatively large-sized solid aggregate particles which may be easily recovered. Since the polyamide particles which are encapsulated by the oligomer cake are chemically compatible with one another, the entire particulate aggregate may be subjected to depolymerization processing so as to recover monomers from which the polyamide is formed (e.g., caprolactam). Filter coating and back-pulsing may be automated using a programmable controller and flow control valves.
Patent CA-2173015-A1 (CA)
Title: Trigger-operated molded punch
Inventor: MARTHALER ROBERT H
IPC: B26F1/36
Filed: 1996-03-29
Abstract: A sheet punch assembled of a plurality of molded parts having a handle section with a stationary jaw and a trigger section pivotal about the handle section which trigger section has a movable jaw.  The handle and trigger are oriented at about a right angle to the sheet to be punched. Punched discs are collected initially in the stationary jaw and caused to thereafter move into a trigger chamber having an exit door.
Patent CA-2174221-A1 (CA)
Title: Basic metal salt of dithiocarbamic acid and lubricating oil composition containing said salt
Inventor: TOKASHIKI MICHIHIDE
IPC: C10M135/18
Filed: 1994-12-28
Abstract: A novel basic metal salt of a dithiocarbamic acid represented by general formula (1) and having a basic component content (=ax3x100) of 30-100 mol %.  In formula (1) R1 to R4 represent each independently a C1-C30 lipophilic group; M represents a metal atom selected from among zinc, copper, nickel, iron, cadmium, silver, lead, antimony, tin and bismuth; and a represents a coefficient in the range of 1/3 to 1/10, which salt does not contain phosphorus and can impart an excellent wear resistance when used as a lubricating oil additive; and a lubricating oil composition comprising a lube base oil and the above metal salt, excellent in wear resistance and friction characteristics, and particularly suitable as a lubricating oil for automotive internal-combustion engines.
Patent CA-2175769-A1 (CA)
Title: Clamp assembly for lithographic plates
Inventor: FULLER DOUGLAS D
IPC: B41F27/12
Filed: 1996-05-03
Abstract: A clamp assembly for clamping a lithographic plate to a cylinder includes a base defining a channel and a plate mounted to the base and overlying the channel. An elongated cam member is rotatably positioned in the channel, the member having a cam surface profiled so that when the cam member is in a first angular position, that surface extends relatively close to the plate and when the cam member is in a second position, that surface is further away from the plate. Stops are included for establishing the two positions of the cam member. When the cam member is in its second position and an edge margin of a recording medium is inserted between the cam member and the plate, moving the cam member to its first position causes the clamp assembly to simultaneously grip and pull on the recording medium. An interposer may be positioned between the plate and the cam member to prevent direct engagement of the recording medium by the cam member and thus prevent the clamp assembly from pulling on the recording medium while clamping the medium.