baber/WOPTO huggingface dataset:
Patent CA-1139884-A (CA)
Inventor: MANLEY HAROLD J
IPC: H04B1/66
Filed: 1980-06-19
Granted: 1983-01-18
Abstract: ABSTRACT OF THE DISCLOSURE              Disclosed is a system whereby in a transmit mode analog speech is sampled and converted digitally to 12 bits of accuracy and then fed into a fast Fourier transform (FFT) processor which analyses the speech into spectral and pitch parameters.  These parameters are then quantized into a data stream which acts as an input to a differen-tial phase shift keying modulator.  The modulator constructs a multi-tone modem output signal from a 25 tone stack which is converted to an analog signal which is fed into a communications channel.  In the received mode a modem input signal from the communications channel is fed through the same analog to digital converter which was used for input speech.  A data stream is now provided which is coupled back into the same digital FFT processor which now operates to provide pitch spectral coefficients which are then separated and used by a synthesizer to reconstruct A speech waveform.  The speech waveform is applied to a digital analog converter which is the same converter used to produce the line signal when the processor operates in the transmit mode.  The FFT processor implements a single FFT algorithm which is used for both vocoder and modem processing in both the trans-mit and receive modes.
Patent CA-1171597-A (CA)
Inventor: ENGELHARDT FRIEDRICH
IPC: C08F220/58
Filed: 1980-08-05
Granted: 1984-07-24
Abstract: Abstract of The Disclosure Outstandingly suitable drilling mud additives are water soluble copolymers consisting essentially of a random distribution of a)  5 to 95% by welght of urllefi of Lhe formuia   ; b)  5 to 95% by weight of uniLs of .he formula   and      ; c)  0 the 80% by welght of units of the formula   ;   wherein R1 and R2 are the same or different and each is hydrogne, methyl or ethyl; and X? is cation.
Patent CA-1107926-A (CA)
Inventor: YAJIMA SEISHI
IPC: D01F9/08
Filed: 1980-09-11
Granted: 1981-09-01
Abstract: ABSTRACT OF THE DISCLOSURE           A method for producing a silicon carbide fiber having a high tensile strength which comprises (1)  preparing a spinning solution from at least one organosilicon high molecular weight compound having a softening point of higher than 50°C, in which silicon and carbon are the main skeleton components, and spinning said spinning solution into a fiber, (2)  preliminarily heating the spun fiber at a temper-ature of 350°-800°C under vacuum or a non-oxidizing atmosphere to volatilize low molecular weight compound contained therein, and (3)  baking the thus treated fiber at a temperature of 800°-2,000°C under vacuum or at least one non-oxidizing atmosphere selected from the group consisting of an inert gas, CO gas and hydrogen gas, to form said silicon carbide fiber.
Patent CA-1165635-A (CA)
Inventor: HUTCHISON RALPH M
IPC: C04B38/00
Filed: 1980-09-16
Granted: 1984-04-17
Abstract: Abstract An asbestos-free mineral article useful as thermal insulation is described into which a visual identifying material is incorporated. The  identifying  material  may  be  any  of  a  variety  of  inorganic particulate  materials  such  as  particulate  minerals,  colored  glass fibers or spheres, metal flakes or wires and the like.  Preferred are mica flakes, present as 0.5% to 10% by weight of the article.
Patent CA-1153890-A (CA)
Title: Hollow form, polyhedron block element  formed of sheet material
Inventor: STOCK ROBERT
IPC: A63H33/16
Filed: 1980-10-27
Granted: 1983-09-20
Abstract: HOLLOW FORM, POLYHEDRON BLOCK ELEMENT               FORMED OF SHEET MATERIAL     ABSTRACT OF THE DISCLOSURE     There is disclosed a hollow form building block useful for toys as a constructional block for play houses, forts, and the like, which is formed of inexpensive sheet material such as corrugated cardboard.  The block element is a hollow-form, polyhedron that is provided with end walls, one of which has a polygonal aperture and the other of which has a coacting polygonal raised rim that is formed by folded tabs cut from the end wall and coacting tabs folded from an underlying end wall. The raised rim coacts with the apertures of other block elements to provide element-to-element interconnecting means and the raised rim also func-tions to secure the hollow-form block structure of the as-sembled, folded block element.
Patent CA-1152971-A (CA)
Inventor: ANGSTADT HOWARD P
IPC: C07B61/00
Filed: 1980-11-06
Granted: 1983-08-30
Abstract: ABSTRACT OF THE DISCLOSURE      In the process of hydrogenating an aromatic dinitrile to the correspondidng di-primary amine in the presence of a catalyst, the improvement of using as catalyst a cobalt catalyst promoted with rhodium where the weight ratio of rhodium to cobalt is 1.0 or less.
Patent CA-1172695-A (CA)
Inventor: HEIMLICHER PETER
IPC: H02M7/04
Filed: 1980-11-07
Granted: 1984-08-14
Abstract: ABSTRACT            The device consists of a blocking transducer which chops the current provided by a rectifier at a relatively high frequency so that the current obtained from the mains is approximately sinusoidal after the higher frequency compo-nents have been filtered out. The blocking transducer includes a transistor which is controlled by pulses of approximately constant duration and repetition frequency and thus transmits a series of linearly increasing current pulses to a storage choke which is connected in series with a saturation choke,  the current therefrom charging a first capacitor through a diode.  A second capacitor in parallel with the series connection of the storage choke and the saturation choke forms an oscillating circuit which enables the transistor to switch on when the current in the oscillating circuit passes through  zero, the voltage on the first capacitor being maintained at the value of the voltage provided by the rectifier by means of a diode. Auxiliary circuits controlling the chopping of the current for the load are powered by a secondary winding on the storage choke. In addition of maintaining sinusoidal the current drawn from the mains, the device provides a high level of efficiency so enabling its construction to be compact.
Patent CA-1161211-A (CA)
Title: Curling brush
Inventor: GIBSON JOHN C
IPC: A63B67/14
Filed: 1980-11-17
Granted: 1984-01-31
Abstract: ABSTRACT OF THE DISCLOSURE          The conventional curling brush is designed purely to add to the distance and control of the curling rock by raising the temperature of the ice in the path of the rock by frictional means.  In this invention aerodynamic principles and electro-static effects are used to supplement the effect of friction.          The rock is already an airfoil.  In this invention the brush is also shaped as an airfoil and a mechanism to rush air between the rock and the brush.  In addition electrostatic charges built up in the process of sweeping at near freezing temperatures are also utilized.
Patent CA-1159032-A (CA)
Inventor: FISHER KENNETH J
IPC: A61G13/00
Filed: 1980-12-30
Granted: 1983-12-20
Abstract: ABSTRACT        A multi-filament lamp combination is disclosed which may be used alone and in multi-lamp arrangements with other single land multi-filament lamps to provide pattern size variation from a large diameter flood effect to a smaller diameter spot effect.          A spot/flood capability exists to provide large pattern exposure simultaneously with secondary spotlighting.  The filaments can be energized selectively from a remote switching station so that the individuals who are scrubbed and gloved need not touch any part of the switching arrangement to change the lamp pattern size.  A cluster of lights can contain one or more multi-filament lamps with in the cluster, so that by switching on the rear most filament of the multi-filament lamps and switching off the single filament lamps, a small high intensity pattern is obtained by switching to the other filaments, a large pattern of high intensity is formed.          More than two filaments can be provided in each lamp.
Patent CA-1142191-A (CA)
Inventor: CALLAHAN KEVIN M
IPC: B65G59/10
Filed: 1981-01-12
Granted: 1983-03-01
Abstract: ABSTRACT           Method and apparatus for dispensing trays one at a time from the bottom of a nested stack of flanged flexible trays are disclosed.  The bottommost tray rests on two supports, thereby supporting the stack, and means compress the bottommost tray lengthwise so that it can pass between the supports and fall free of the stack.
Patent CA-1161411-A (CA)
Inventor: COPP CARL A JR
IPC: F04B27/10
Filed: 1981-02-23
Granted: 1984-01-31
Abstract: D-4,814 MULTICYLINDER SWASH PLATE COMPRESSOR                 PISTON RING ARRANGEMENT          Abstract of the Disclosure A compact lightweight multicylinder swash plate compressor is disclosed having a metallic double-ended piston with piston heads reciprocated in aligned metallic cylinder bores.  Each piston head has a diametrical dimension substantially less than the diametrical dimension of its respective bore to provide a substantial annular space therebetween and a solid seal-support ring of slippery material is expanded over each piston head and contracts into a circum-ferential groove therein.  Each ring is sufficiently thick that the memory recovery thereof after further contraction forced by a tool causes the ring to sealingly engage its respective bore immediately after assembly with its piston head therein.  The metal of the piston head on opposite sides of the groove is thereby pre-vented from touching the metal of its respective bore throughout its reciprocation in the bore.  Each ring groove is formed with a plurality of projections which are spaced about and project outward from the bottom thereof.  The projections project sufficiently outward and are configured so that they substantially bite or imbed themselves in the underside of the ring mounted thereover during assembly of the piston heads with the rings thereon in their respective bores.  Each
Patent CA-1150802-A (CA)
Inventor: THOMAS THOMAS J
IPC: F04B49/06
Filed: 1981-03-17
Granted: 1983-07-26
Abstract: PERSONAL SAMPLING PUMP                            Abstract A portable battery powered pump providing constant mass flow of air sample through a particular filter or vapor trap in which the pump drive motor speed is controlled by an amplifier having a reference voltage input and an inverse feedback signal related to sensed motor speed.  Compensation for increased resis-tance to air sample flow is made by a motor current feedback signal applied to the amplifier to cause motor speed to increase with increased flow resistance.
Patent CA-1162083-A (CA)
Inventor: SUGA ASAKICHI
IPC: B25F1/04
Filed: 1981-04-03
Granted: 1984-02-14
Abstract: ABSTRACT A device for driving a screw, pin, rivet or the like is disclosed. The device includes a stationary hollow cylinder serving as a housing.  A rotary cylinder has an end grip cylinder rotatably attached to it and is telescopically fitted on the stationary cylinder for both relative sliding movement and relative rotational movement therebetween.  A center rod has one of its ends secured to the rotary cylinder, a flange-shaped collar at a middle part thereof and a reduced diameter portion which extends from the collar to the  opposite free end of the rod.  A thrust sleeve is axially displaceable in the stationary cylinder in front of the collar of the center rod.  The thrust sleeve is formed with an inner tapered part around its front edge and a locking recess on its outer peripheral surface.  A conically headed press block is axially displaceable on the reduced diameter extension of the center rod in the thrust sleeve and is spring biassed towards the front of the thrust sleeve.  A clamp has upper and lower jaws, each of which has an inclined rear part which is so formed as to come into engagement wih the inner tapered part of the thrust sleeve at its outer side and with the conical headed part of the press block at its inner side.  A support block is arranged on a fore part of the reduced diameter portion of the center rod to support the clamp. The block is formed with upper and lower axially extending convex grooves in which the respective upper and lower clamp jaws, are received so as to perform rocking movement over the convexity in the groove.  A control lever in the form of twin lever arms is pivotally mounted on the stationary cylinder.  One of the lever arms has a tapered free end extendable through an aperture on the stationary cylinder to engage the thrust sleeve so as to displace the thrust sleeve forwards.  The other lever arm has a free end extendable through another aperture on the stationary cylinder to engage a recess formed on the thrust
Patent CA-1167877-A (CA)
Inventor: WECHSLER HANS G
IPC: A63G21/02
Filed: 1981-05-01
Granted: 1984-05-22
Abstract: ABSTRACT OF THE DISCLOSURE            VEHICLE FOR COASTING DOWN IN A CHANNELSHAPED ROLLER                              SLIDE            For coasting down in a non-rail, channel-shaped roller slide having straight and curved sections, a vehicle comprises a chassis with unsteered wheels, each front wheel being mounted on a supporting member. The axle of each front wheel is arranged with caster behind a pivoting support of the supporting member extending normally thereto.  The pivoting movement of the front wheel is limited by coacting stops arranged on the chassis and on the supporting member.
Patent CA-1153118-A (CA)
Inventor: BETTS MALCOLM C
IPC: H04L7/04
Filed: 1981-05-14
Granted: 1983-08-30
Abstract: METHOD AND APPARATUS FOR CODE CONVERSION OF BINARY TO MULTILEVEL SIGNALS     Abstract of the Disclosure A method and apparatus for converting a binary signal to one having quaternary-level symbols with no d-c component.  To achieve this, the running digital sum is limited by selectively inverting words within each frame of (n) symbols.  A separate (n + 1)th symbol is added to each frame to indicate the selective inversion of the words, so that the correct polarity of the (n) symbols can be re-established.     - i -
Patent CA-1169498-A (CA)
Inventor: HOUKAWA KOUJI
IPC: H03K19/195
Filed: 1981-06-10
Granted: 1984-06-19
Abstract: Abstract of the Disclosure A basic logic circuit of a superconductive logic circuit comprises a bridge circuit of four branches wherein first and second terminals are connected at least at two nodes and an output terminal is connected at least at a node.  One branch of the bridge circuit comprises a series circuit consisting of a first resis-tor and a first Josephson junction connected between the first and second input terminals.  The second branch comprises a parallel circuit of a second Josephson junction and a second resistor connected between the first input terminal and a grounding terminal of the bridge circuit.  The third branch comprises a third resistor connected between the second input terminal and the output terminal.  The fourth branch comprises a third junction connected between the output terminal and the grounding terminal.  A load resistor is connected between the output terminal and the ground.
Patent CA-1146209-A (CA)
Inventor: STEINKE MARK H
IPC: E05B65/468
Filed: 1981-06-16
Granted: 1983-05-10
Abstract: Abstract of the Disclosure The system includes an elongated latching bar located behind the drawers and rotatable between latching and unlatching positions.  A spring biases the latching bar to its latching position.  A latching clip is mounted on each drawer and has a cam for engaging the latching bar and causing rotation thereof to its unlatching position as the drawer is closed.  The latching clip has a keeper for receiving the latching bar as it rotates back to its latching position.
Patent CA-1151912-A (CA)
Inventor: MURAKAMI MASAHIRO
IPC: B23Q15/24
Filed: 1981-06-23
Granted: 1983-08-16
Abstract: ABSTRACT OF THE DISCLOSURE      Disclosed is an automatic fillet weld tracing mechanism for two materials to be welded which are arranged stepwise and parallel to each other. A first motor driving mechanism is positioned at a fixed height and vertically receiprocates a first driven member having secured thereto a first sensor, said first sensor being positioned adjacent a first material to be welded with a given gap therebetween. A second driving mechanism is fixed to the first driven member and vertically recip-rocates a second driven member to which is attached a second sensor held adjacent a second material to be welded with a given gap therebetween. The second driving mechanism also drives a third driving mechanism via a differential having a predetermined gear ratio. The third driving mechanism vertically reciprocates a third driven member having a welding torch attached thereto, the welding torch being positioned to weld at the gap between the  materials.  Control means are provided for actuating each of the first and second driving mechanisms in response to a change of the gap sensed by one of the sensors so that the torch is always held at a predeter-mined position relative to the gap, regardless of changes in the position of the gap.
Patent CA-1163303-A (CA)
Title: Method of manufacturing an electric discharge device
Inventor: DE VRIES GERHARD H F
IPC: H01J17/49
Filed: 1981-06-25
Granted: 1984-03-06
Abstract: ABSTRACT;             A method of manufacturing an electric discharge device comprising a pattern of electrodes bonded to a glass substrate.  It is necessary for certain gas discharge dis-play devices to use metal electrodes which are at least 20 µm thick and adhere satisfactorily to a glass substrate. A metal foil is placed on a glass substrate, and this assem-bly is heated to a temperature T1 which is below the melting-point of the metal of the foil and at which the viscosity of the glass of the substrate is in the range from 107 to 103 Pas.  The foil is pressed uniformly against the substrate at the temperature T1 for a time which is sufficient to produce uniform contact between the foil and the substrate.  The foil is then bonded to the substrate by an anodic bonding process, and the desired electrode pattern is produced by locally removing metal from the foil.
Patent CA-1168990-A (CA)
Inventor: NEUZIL RICHARD W
IPC: C07C7/13
Filed: 1981-07-17
Granted: 1984-06-12
Abstract: "PROCESS FOR THE SEPARATION OF META-XYLENE"     ABSTRACT             An adsorptive separation process for separating meta-xylene from a feed mixture comprising meta-xylene and  the other C8 aromatics, which process comprises contacting the feed mixture with an adsorbent comprising type Y zeolite containing sodium at the exchangeable cationic sites and having a silica to alumina mole ratio of from about 4.5 to about 5.0, selectively adsorbing substantially all of the meta-xylene isomers to the sub-stantial exclusion of the remaining C8 aromatics and thereafter recovering high-purity meta-xylene.  A desorption step may be used to desorb the adsorbed meta-xylene.  The process is carried out preferably in the liquid phase.
Patent CA-1160743-A (CA)
Inventor: DUNNING TED E
IPC: A61B5/08
Filed: 1981-07-24
Granted: 1984-01-17
Abstract: Abstract Of The Disclosure A remote pulmonary function tester uses a microcomputer to receive patient identification data, direct the test sequence, store several FEV maneuvers, and then transmit the stored data in a digital format to a central computer.  The central computer plots a flow volume curve, computer FEV, FEF 25-75% etc., compares these values with normals, and performs a preliminary disease categorization.  The pulmonary function tester comprises a flow to pressure transducer, producing an analog signal, an analog to digital converter for digitizing the analog signal, a touch tone keyboard for simple patient identification data entry, and a microcomputer system having a read/write storage for storage of test and patient identification data, communication interface for connection to a central computer through telephone lines, and a read only memory and a central processing unit for control of the tester.
Patent CA-1165023-A (CA)
Inventor: ECKLUND LAWRENCE M
IPC: H03J7/00
Filed: 1981-08-12
Granted: 1984-04-03
Abstract: Abstract A mechanical radio receiver tuner with microphonics elimination circuitry is disclosed.  During a mechanical tuning mode, the mechanical position of a movable tuning element provides an associated adjustable reactance which determines a control voltage for controlling the output of a voltage controlled oscillator (VCO) that serves as the local oscillator for a superheterodyne radio receiver.  After initially selecting a channel frequency by adjusting the output of the VCO with the mechanically movable tuning element in the tuning mode, a switch means disconnects the movable tuning element from operative control of the local oscillator frequency and implements a locked tuning mode by providing the VCO with a control voltage related to the difference between the frequency of the output signal of a mixer stage and the center frequency of a fixed tuned narrow passband IF stage that follows the mixer.  Preferably, this control voltage for the locked tuning mode is provided by a phase locked loop.  When substantial changes in the reactance provided by the movable tuning element are sensed, the switching circuit reimplements the tuning mode so that the position of the mechanically movable element will once again con-trol the output of the local oscillator.  In this manner, minor changes in the mechanical position of the movable tuning element during the locked tuning mode have no effect on receiver tuning and therefore microphonics are substantially eliminated.
Patent CA-1243516-A (CA)
Inventor: CALANDRA FRANK JR
IPC: E21D20/02
Filed: 1981-11-16
Granted: 1988-10-25
Abstract: TITLE             METHOD AND APPARATUS FOR COMBINING RESIN  BONDING AND MECHANICAL ANCHORING OF A        BOLT IN A ROCK FORMATION                  ABSTRACT OF THE DISCLOSURE     A mechanical anchor including an expansion shell and a camming plug positioned in the shell is threaded onto the end of a mine roof bolt.  A roof support plate is carried on the opposite end of the bolt.   The mechanical anchor is in-serted in a bore hole drilled in a rock formation with one or more resin cartridges advanced by upward movement of the bolt to the end of the bore hole.  The cartridge is ruptured by upward thrust and rotation of the bolt to release the resin components for mixing.  A stop device extending through the plug abuts a tapered end of the bolt to prevent axial movement of the plug on the bolt when the bolt is rotated in a pre-selected direction to mix the resin components before the shell is expanded.  Rotation of the bolt continues without expansion of the shell for a period of time to permit formation of a curable resin mixture.   As the resin mixture begins to harden rotation of the shell and plug is resisted until the stop device is displaced by the bolt tapered end permitting relative rotation between the plug and the bolt.  The plug nonrotatably moves down the bolt upon continued rotation of the bolt in the same preselected direction to expand the shell into engagement with the wall of the bore hole before the resin mixture cures.   The cured resin bonds the bolt and expanded shell to the rock formation to resist slippage of the expanded shell and maintain the bolt in tension.