baber/WOPTO huggingface dataset:
Patent CA-1127468-A (CA)
Inventor: COXON JOHN R
IPC: B63H3/00
Filed: 1980-07-24
Granted: 1982-07-13
Abstract: Improvements in marine propellers ABSTRACT           A variable-pitch marine propeller comprises two or more helicoidal blades 6 which are mounted on a hub 1 so that each blade is free to pivot about a pivot axis 25 which extends radially outwards from the hub 1. The pivot axis 25 of each blade 6 is spaced in front, in the direction of rotation 24 of the propeller, of the centre of pressure of the blade 6 so that in operation, the water pressure acting on the blade 6 exerts a torque which tends to turn the blade 6 about its pivot axis 25 in a direction to bring the surfaces of the blade into line with the flow of water over the blade.   The pivot axis 25 is also spaced behind with respect to the direction of movement of the axis of  rotation of the propeller through the water, at least a major portion of the pressure surface of the blade so that, in operation, the resultant of the drag of the water on the blade exerts a torque which tends to turn the blade about its pivot axis 25 in an opposite direction.   Additionally, and most importantly, the shape and mass distribution of the blades 6 relative to their pivot axes 25 is such that centrifugal effects tend to move the blades, in the absence of hydrodynamic forces, into a pitch equal to that of the helicoid.  The various torques acting on the blades are such that, in operation, over a range of rotational and axial speeds, each blade 6 adopts a stable equilibrium position in which its pitch is optimally suited to the speed of rotation and the linear axial speed of the propeller.
Patent CA-1162281-A (CA)
Title: Controllable mirror
Inventor: HUTCHINGS THOMAS J
IPC: H01S3/08
Filed: 1980-08-18
Granted: 1984-02-14
Abstract: ABSTRACT OF THE DISCLOSURE       The present invention relates to a mirror constrained to translation, the position thereof being controlled by a piezoelectric ceramic operating as a bimorph.  The controllable mirror is particularly useful in a ring laser.  The mirror is attached at one end of a central post which is coaxial with a surrounding rigid rim.  A pair of flexible parallel membranes are connected at the outer boundaries thereof to the rim member and to the central post.  A rigid hub is positioned adjacent and coaxial with the other end of the central post member and includes a bearing member which will apply an axial force to the central post.  A metallic membrane is attached to the hub member and to another rim member which in turn is connected to the first rigid rim member.  A pair of piezoelectric wafers are attached to opposite surfaces of the metallic membrane and are connected to a source of control voltage.  Changes in the control voltage are reflected in stress changes in the wafers which in turn effect a movement of the metallic membrane.  The bearing member acts or. the central post to move the mirror in or out, without any tilting thereof.
Patent CA-1138480-A (CA)
Inventor: RAHAV AMIR
IPC: G01L1/26
Filed: 1980-08-18
Granted: 1982-12-28
Abstract: LOAD CELL APPARATUS                 ABSTRACT OF THE DISCLOSURE            Apparatus is provided for mounting a load cell unit between the fixed support and shiftable force responsive structures of a weighing scale or other force measuring equipment in an improved manner minimizing to a point of virtual elimination the accuracy impairing effects of "side loading" of the load cell unit due to lateral and rotational movements of the shiftable structure relative to the fixed structure caused by spurious factors. The load cell unit is disposed between, and in oppositely engaged type coupling relationship with, a rigid plate and a flexure plate spaced from the latter in a carrier assembly, and the carrier assembly is disposed between, and in oppositely engaged rolling contact type coupling relationship with, opposed portions of the fixed and shiftable structures. The engagement coupling relationship between the load cell unit and the flexure plate of the carrier assembly is also of the rolling contact type.  The rolling contact couplings are each provided by engagement of a generally spherically curved, convex surface with an associated opposing surface, the latter preferably being substantially flat.
Patent CA-1151324-A (CA)
Inventor: BLACK DAVID H A
IPC: H04J3/17
Filed: 1980-10-03
Granted: 1983-08-02
Abstract: TASI SYSTEM INCLUDING AN ORDER WIRE     Abstract of the Disclosure;   One of the transmission facilities of a TASI system is used as an order wire, via which channel signalling information and assignment information are transmitted.  Signalling information is transmitted periodically in frames on the order wire for only some of the channels, connected to the system, at any one time.  Accordingly, the assignment information consists of both channel-to-facility assignment information, relating to the assignment of channels to the other facilities, and channel signalling assignment information, relating to the assignment of channels to signalling bit time channels in the frames on the order wire. One assignment can be transmitted in each frame, and frames not used for transmitting assignment information can be used for transmitting commands and messages.  The system avoids the need to transmit multi-tone signals preceding speech bursts on the transmission facilities and avoids lengthy delays in the transmission of channel signalling information.                                  - i -
Patent CA-1159188-A (CA)
Inventor: SEP WALTHERUS J
IPC: C08L67/06
Filed: 1980-10-17
Granted: 1983-12-20
Abstract: R 286 (R) ABSTRACT      Curable unsaturated polyester compositions which exhibit reduced loss by evaporation of volatile monomeric materials without substantially affecting the adhesion properties of the compositions.  The compositions comprise an unsaturated polyester, a reactive copolymerizable monomer, a paraffin wax as an evaporation-reducing agent and as an adhesion promotor a compound, containing 10-30 carbon atoms, of the class consisting of alkylaromatic, alkenylaromatic, alkylolaromatic compounds or an alcohol.
Patent CA-1142620-A (CA)
Inventor: NORBERG GAYLE R
IPC: G06F11/30
Filed: 1980-10-29
Granted: 1983-03-08
Abstract: ABSTRACT OF THE DISCLOSURE A monitor and control apparatus according to the present disclosure includes a configuration and environment monitor (CEM) connected to a plurality of remote station monitors of a computer system for executing commands at the remote stations and for monitoring abnormal conditions thereat.  The remote monitors each include a Johnson counter responsive to clock signals from the CEM to sequentially step through its output positions.  Address means is selectively connected to first output positions of the Johnson counter to provide a unique address for each remote monitor.  Monitor means receives monitor condition sig-nals and is arranged with a transmitter to transmit a signal to the CEM upon sensing a fault.  The CEM then sequences the Johnson counters to cause the address and fault identification data in the operated monitor to be transmitted to the CEM.  Control means is provided to perform selected control operations at the remote station, the control means being connected to second output positions of the Johnson counter.  Selective means is responsive to address signals from the CEM on a select channel to disable all control means in remote stations whose address is other than that received.  Control signals on the select channel then operates the selected command in the addressed monitor.
Patent CA-1159748-A (CA)
Inventor: TAYLOR FRANK J
IPC: A47L15/32
Filed: 1980-12-12
Granted: 1984-01-03
Abstract: ABSTRACT OF THE DISCLOSURE A compact, portable, self-contained dishwasher adapted to be operably connected to a domestic hot water supply. The unit requires no auxillary power, relying solely upon water pressure for operation. The dishes and cookware to be washed are positioned upon a rotatable rack mounted within an upstanding housing. Water jets are directed at the rack to cause rotation thereof and to effectively accomplish the washing action. The water jets comprise a first collimated water jet adapted to initiate rotation of the rack and a second uniquely configured spray jet system adapted to sustain its action. A control valve is provided to control the flow of water through the collimated jet thereby enabling precise regulation of the speed of rotation of the rack. Also forming a part of the apparatus is a metering system for controllably mixing liquid soap or detergent with the water flowing into the jets.
Patent CA-1162433-A (CA)
Title: Overcoated photoreceptor containing gold injecting  layer
Inventor: HEWITT HARVEY J
IPC: G03G5/14
Filed: 1981-02-16
Granted: 1984-02-21
Abstract: ABSTRACT OF THE DISCLOSURE This invention is directed generally to a layered inorganic photo-responsive device, this device being comprised of a substrate, or supporting base? containing on its surface a layer of hole injecting material comprised of gold, a hole transport layer in operative contact with the hole injecting layer, the transport layer being comprised of a halogen doped selenium arsenic alloy, wherein the percentage of selenium present is from about 99.5 percent to about 99.9 percent, the percentage of arsenic present is from about 0.5 percent to 0.1 percent, the percentage of halogen present ranges from about 10 parts per million to 200 parts per million, followed by a charge generating material overcoated on the transport layer, this material being comprised of inorganic photoconductive substances, and as an optional layer a layer of insulating organic resin overlaying the charge generating layer. The transport and generating layers can also be comprised of one composite layer. This device, with the overcoating layer, is useful in systems employing a double charging sequence, that is, charging the photoresponsive device with a uniform layer of negative charges, followed by charging with a uniform layer of positive charges.
Patent CA-1221378-A (CA)
Inventor: ALT GERHARD H
IPC: C07C231/00
Filed: 1981-03-18
Granted: 1987-05-05
Abstract: Abstract of the Disclosure The disclosure herein relates to a group of N-hydrocarbyloxymethyl-2-haloacetanilide compounds, herbicidal compositions containing said compounds as the active ingredient and herbicidal method of use in various crops, particularly sugarbeets.  The herbicides herein are particularly effective against annual grasses, including hard-to-kill narrowleaf weeds such as blackgrass, wild oats, and downy brome and other prevalent grasses such as yellow foxtail, barnyardgrass, crabgrass, annual rye, etc.
Patent CA-1166888-A (CA)
Inventor: JANSEN HENDRIK
IPC: A23L13/00
Filed: 1981-03-31
Granted: 1984-05-08
Abstract: Abstract Method and plant for the thickening of offal Method and plant for the thickening of offal, in which the rough product after having been ground and mixed with approximately an equal quantity of fat, is passed through a number of evaporating stages each comprising a rising film pipe-evaporator, a portion of the product being re-circulated in each of the stages.
Patent CA-1159355-A (CA)
Inventor: MARKUS GERARDUS A
IPC: F23C7/00
Filed: 1981-04-30
Granted: 1983-12-27
Abstract: TITLE: FUEL REACTOR     A B S T R A C T     A fuel reactor having an outer frusto-conical shell which is closed at one axial end and a fuel inlet at this axial end projects fuel axially into the outer shell and into an inner shell mounted coaxially therewith, the inner and outer shells being connected together at the discharge end of the inner shell, with the inner shell being open at its other end and axially spaced from the closed end of the outer shell.  A tangential combustion air inlet is connected to the annular space between the two shells while a discharge nozzle is mounted on the discharge end of the inner shell.          A number of circumferentially spaced tangential slots in the inner shell adjacent the nozzle scoop up some of the swirling air projected in through the tangential air inlet and direct some of the air onto the outer surface of the discharge nozzle so that it is cooled.
Patent CA-1164975-A (CA)
Inventor: O'KEEFE PATRICK J JR
IPC: B60K31/06
Filed: 1981-05-26
Granted: 1984-04-03
Abstract: ABSTRACT OF THE DISCLOSURE An automatic speed control for a heavy duty vehicle includes a controller which regulates communication between a compressed air source and an air actuated throttle mechanism.  The controller generates a control signal which is a function of a speed error signal and the position of the air actuated throttle to regulate the compressed air source.  The speed error signal is calculated as the difference between 3 commanded speed signal and an actual speed signal.  To generate the control signal, the error signal and throttle position signal are operated on by different lead-lag transfer functions.  These lead-lag terms are thereafter combined with a proportional speed error term to yield the desired control signal.  The system further includes a throttle control feature for powering auxiliary equipment when the actual speed signal is zero.  Another feature of the control limits the commanded speed signal to a set value when it exceeds a predeter-mined limit.
Patent CA-1164977-A (CA)
Inventor: KRIEDER ROBERT D
IPC: B60K31/18
Filed: 1981-05-27
Granted: 1984-04-03
Abstract: ABSTRACT OF THE DISCLOSURE An automatic speed control for a heavy duty vehicle includes a controller which regulates communication between a compressed air source and an air actuated throttle mechanism.  The controller generates a control signal which is a function of a speed error signal and the position of the air actuated throttle to regulate the compressed air source.  The speed error signal is calculated as the difference between a commanded speed signal and an actual speed signal.  To generate the control signal, the error signal and throttle position signal are operated on by different lead-lag transfer functions.  These lead-lag terms are thereafter combined with a proportional speed error term to yield the desired control signal.  The system further includes a throttle control feature for powering auxiliary equipment when the actual speed signal is zero.  Another feature of the control limits the commanded speed signal to a set value when it exceeds a predeter-mined limit.
Patent CA-1169937-A (CA)
Inventor: MATHIEU MICHEL
IPC: H04L29/06
Filed: 1981-06-05
Granted: 1984-06-26
Abstract: ABSTRACT          Process and apparatus for digital data communication using packet switching The consequences of the loss of a packet are attenuated in a digital data communication apparatus using packet switching by structuring the digital data as multibit words into frames having a fixed length 1 and assembling the frames into packets all having the same predetermined length L = kl, where k is a predetermined integer.  Continuity index words incremented by one each time a new frame or packet is assembled may be located into the frame locking word or the packet prefix.  Then the number of packets which are lost may be determined at the receiver location by monitoring the successively received index words.  When the digital data represent successive samples which are correlated, for instance when such samples represent a sound, substitution data may be generated at the receiver location and used in-place of the missing data.
Patent CA-1185022-A (CA)
Inventor: PAGE MICHEL
IPC: B60R16/02
Filed: 1981-06-08
Granted: 1985-04-02
Abstract: Abstract Known aircraft intercom systems, in which audio signals are carried over wires, are prone to electrical noise interference problems.  These problems are alleviated by the present invention in which the transceivers and receivers are interconnected with the control sets via fibre optic lines.  Audio signals are applied to a multiplexer which drives an optical modulator.  The output of the optical modulator feeds a fiber optic line.  Conversely, optical signals are fed to an optical demodulator whose output feeds a demultiplexer.  Audio outputs from the demultiplexers feed the receivers and transceivers and the control sets.
Patent CA-1231977-A (CA)
Inventor: PINTO ALWYN
IPC: C07C45/49
Filed: 1981-09-04
Granted: 1988-01-26
Abstract: ABSTRACT                                         B.31503 In producing methanol by synthesis reaction of carbon monoxide and hydrogen, a starting gas deficient in hydrogen is mixed with a hydrogen rich gas obtained by processing a mixture of starting gas with recycled hydrogen rich gas and/or unreacted synthesis gas.  Purified gas produced by partial oxidation  of coal is mixed with the hydrogen rich gas and the recycled synthesis gas, compressed and divided into (a) a synthesis stream which is fed to a methanol synthesis reactor, cooler and separator and (b) a hydrogen enrichment stream which is fed to a CO2 removal station and a hydrogen purifier.
Patent CA-1166402-A (CA)
Inventor: ALDRICH PAUL H
IPC: C08L93/04
Filed: 1981-10-28
Granted: 1984-05-01
Abstract: Aldrich Case 36 STABLE DISPERSIONS OF FORTIFIED ROSIN          Abstract of the Disclosure Disclosed are novel aqueous dispersions which consist essentially of finely-divided fortified rosin particles; a water-soluble or water-dispersible cationic starch dispersing agent for the finely-divided fortified rosin particles; an anionic surface-active agent; and water.  The novel aqueous dispersions are used to size paper.
Patent CA-1167711-A (CA)
Inventor: WILKIE ARNOLD E
IPC: D01H1/00
Filed: 1981-11-02
Granted: 1984-05-22
Abstract: IMPROVEMENTS IN RING SPINNING FRAME               ABSTRACT OF THE DISCLOSURE         Improvements in conventional ring spinning processes of the type wherein a strand of staple fibers if drafted, twisted and collected on a ring spinning frame are obtained by the added step of subjecting the stand to -the twisting action of a pneumatic false twister between the drafting and collecting steps.  The added step improves performance and/or permits the process to be operated at higher front roll delivery speeds for any given spindle speed without sacrificing performance. The higher delivery speeds results in improvements in the productivity of the process and the apparent value of staple yarn produced thereby.
Patent CA-1161150-A (CA)
Inventor: HARVEY DONALD W
IPC: H04B10/2581
Filed: 1981-11-04
Granted: 1984-01-24
Abstract: SEISMIC CABLE CONNECTOR WITH OPTICAL TRANSCEIVER            ABSTRACT      A seismic cable connector is provided for use with a dual fiber cable in a fiber optic seismic exploration system.  The connector contains a digital, logic com-patible transceiver which includes an optical detector connected to one fiber of the cable and a fiber optic transmitter connected to the other fiber.  The digital transceiver is housed in an environmentally sealed case to protect the transceiver and the ends of the optical fibers from being affected or damaged during use in the field.  The transceiver is activated by transistor-transistor logic contained within the connector.  The optical fibers are protected by buffer tubes extending the length of the cable.  A sixty-one pin electrical plug is provided in the cable connector for mating the connector with remote seismic data gathering units.
Patent CA-1165162-A (CA)
Title: Photographic exposure control
Inventor: CARCIA PETER P
IPC: G03B7/087
Filed: 1981-11-16
Granted: 1984-04-10
Abstract: PHOTOGRAPHIC EXPOSURE CONTROL WITH SCENE LIGHT INTEGRATION LEVEL DETERMINED AS FUNCTION   OF PRE-EXPOSURE AMBIENT SCENE LIGHT DETECT                ABSTRACT                   A photographic exposure control system provides for the termination of an exposure interval as a predetermined function of the scene light detected during the exposure interval wherein at least one parameter of the predetermined function is varied as another function of the ambient scene light detected prior to the exposure interval.  The predetermined function may comprise the integration of the detected scene light to a selected level wherein the selected level of integration is the one parameter varied as a function of the ambient scene light detected prior to the exposure interval.
Patent CA-1176995-A (CA)
Inventor: VO TOAN P
IPC: C01B21/04
Filed: 1981-12-16
Granted: 1984-10-30
Abstract: "NOVEL REPRESSURIZATION FOR PRESSURE        SWING ADSORPTION SYSTEM"                 Abstract of the Invention Binary gas mixtures are separated on three carbon molecular sieve adsorbent beds to produce an enriched gas.  This process includes the partial pressurization of an adsorbent bed with breakthrough gas in the range of 40 to 90 percent of the adsorption pressure.
Patent CA-1184478-A (CA)
Title: Hydrogen etching of semiconductors and oxides
Inventor: CHANG ROBERT P H
IPC: H01L21/311
Filed: 1982-02-22
Granted: 1985-03-26
Abstract: HYDROGEN ETCHING OF SEMICONDUCTORS AND OXIDES      Abstract Atomic hydrogen, typically produced in a plasma, etches a wide range of materials, including III-V materials and their oxides.  GaAs oxide is etched at a faster rate than GaAs, for example, providing significant possibilities for processing integrated circuits and other devices.          Silicon is etched preferentially as compared to silicon dioxide or silicon nitride.  Native oxides are also conveniently removed by this method prior to other processing steps.
Patent CA-1201086-A (CA)
Title: Method for manufacturing microwire and device for  effecting same
Inventor: STEPANENKO ALEXANDR V
IPC: B21C1/02
Filed: 1982-05-06
Granted: 1986-02-25
Abstract: METHOD FOR MANUFACTURING MICROWIRE AND DEVICE FOR                 EFFECTING SAME                            ABSTRACT     The invention relates to the rolling and drawing of metals. The microwire manufacturing method according to the invention is characterized in that a microwire blank (1) is rolled during the drawing process in opposite directions relative to the drawing axis (B-B). The blank (1) is rolled over the same di-stance equal to at least one half of its circumference. The method is carried out with the aid of a device cimprising a body (3), a die (4) and a mechanism for drawing wire through the die (4). The die (4) is composed of two parts (5 and 6) which interact with the blank (1) as the latter is drawn between them. Each of the die parts (5 and 6) has a working surface (8). According to the invention, the parts (5 and 6) of the die (4) are secured in the body (3) so that they can be set in synchro-nized reciprocating motion in parallel planes. The working sur-faces (8) of both parts (5 and 6) of the die (4) are flat and parallel with each other and the drawing axis (B-B).   The microwire manufacturing method and device according to the invention are applicable to the fabrication of semiconductor instruments and integrated microcircuits. They can also be used to improve the surface finish of microwire produced by conven-tional methods with the aid of conventional equipment.