baber/WOPTO huggingface dataset:
Patent CA-2025767-C (CA)
Inventor: BANDO AKIRA
IPC: H02P9/04
Filed: 1990-09-19
Granted: 1994-02-22
Abstract: ABSTRACT OF THE DISCLOSURE         A control system for an AC exciting synchronous machine for use in an electricity generator/motor system.       The AC exciting synchronous machine can be driven not only in a variable-speed operation based on 2-axis current control but also in a constant exciting frequency operation based on only direct-axis current component control.  A phase signal is switched to drive stably the AC exciting synchronous machine in a self-excited operation or in a rotary phase modifying operation.          Further, when it is desired to start pumping-up water, a synchronizing power is provided to keep constant the rotational speed of the machine at the time of establish-ing a desired water pressure.  Because of such switching arrangement of the phase signal, the AC exciting synchronous machine can be operated as an ordinary synchronous machine exhibiting ordinary synchronous characteristics, that is, self-excited operation charac-teristics, rotary phase modifying operation character-istics and pumping-up start characteristics.  Even when the synchronous machine is cut off from an AC power system and the voltage of the synchronous machine is abruptly changed, the stable self-excited operation of the machine can be realized.
Patent CA-2026942-C (CA)
Inventor: FAVONIO OSVALDO
IPC: A61C5/02
Filed: 1990-10-04
Granted: 2002-01-01
Abstract: An improved apparatus for carrying out devitalizations and root canal treatments in teeth by means of the use of liquid chemical substances comprises the following steps: putting the pulp chamber and the relevant root canals under vacuum by means of a vacuum vessel; and selectively feeding, in succession, into said pulp chamber and said root canals said liquid chemical substances, which are contained inside respective containers under atmospheric pressure; said substances are then drawn into said vacuum vessel. The so treated tooth is then sealed by sucking a sealing paste-like substance into it.
Patent CA-2035283-C (CA)
Title: Roman shade
Inventor: COLSON WENDELL B
IPC: A47H5/14
Filed: 1991-01-30
Granted: 1995-09-26
Abstract: An expandable and contractible shade member (1), comprising an assembly of an integral row of parallelly arranged generally tubular cells (2), one on top of the other, with the longitudinal cell axis transverse to the direction of expansion and contraction of the window shade, each cell comprising a top portion (7), a rear wall portion (8), a bottom portion (10) and a front wall portion (6), where the front wall flap portion (6) is freely hanging and defines a surface drooping downwardly from the top portion (7) at least to a juncture of said cell, with an immediately adjacent lower cell when said window shade is in the expanded state, the lower edge of said front wall flap portion being independent of said cell except at its junction with the top portion (7).
Patent CA-2035430-C (CA)
Title: Spacer for double cage reinforcement wire mesh for concrete products
Inventor: SCHMIDGALL JON A
IPC: E04C5/06
Filed: 1991-01-31
Granted: 1995-02-14
Abstract: SPACER FOR DOUBLE CAGE REINFORCEMENT   WIRE MESH FOR CONCRETE PRODUCTS                    ABSTRACT OF THE DISCLOSURE     A spacer for use in locking two cages into an integral unit of reinforcement and spacing the reinforcement from the surface of the form used in making large concrete products such as box sections, pipes, culverts and manholes.   The spacer provides for precise placement of the reinforcement cages without the necessity of welding or the use of ties to retain the spacer in place.   The spacer uses an eye configuration for spacing and a torsion lock that provides for both ease of installation and positive locking of the spacer onto the cages.
Patent CA-2036481-C (CA)
Title: Interference cancellation system having noise reduction features and method
Inventor: TALWAR ASHOK K
IPC: H04B1/12
Filed: 1991-02-15
Granted: 1999-12-14
Abstract: An interference cancellation system automatically couples and decouples itself from a radio receiver system when no interfering signals are present. The interference cancellation system, which is adapted to be connected to the radio receiver system having a receiver antenna, a receiver and a receiver transmission line interconnecting the receiver antenna and the receiver, includes an auxiliary antenna, a first directional coupler connected to the auxiliary antenna, a second directional coupler connected to the receiver transmission line, a third directional coupler connected to the first directional coupler, a synchronous detector connected to the third and second directional couplers, a signal controller connected to the synchronous detector and a subtractor connected to the receiver transmission line and to the signal controller. A detector is connected to the third directional coupler, and a comparator is connected to the detector and is provided with a predetermined threshold voltage level. The comparator compares the detected output signal from the detector with the predetermined threshold voltage level, and provides an output signal to a switch circuit interposed between the signal controller and the subtractor. When an interfering signal is detected, the switch circuit provides an electrical path from the signal controller to the subtractor so that a cancellation signal may be injected into the receiver transmission line. If no interfering signal is detected, the switch circuit opens the connection between the signal controller and the subtractor so that no noise from the interference cancellation system is injected into the radio receiver system.
Patent CA-2046323-C (CA)
Title: Article coating system
Inventor: SALISBURY RICHARD
IPC: B05B15/12
Filed: 1990-02-01
Granted: 2000-10-17
Abstract: A system for coating articles by the use of electrostatic attraction of ionized particles which are subsequently cured. The system includes a pair of carriers for jointly carrying each article through the system, from application of the particles to the article through curing of the particles on the article. Each carrier is capable of carrying the article independently of the other. After deposition of the particles on the article the article and the carriers are conveyed through a cleaning station wherein one of the carriers is moved out of carrying engagement with the article and cleaned while the article supported by the other carrier. The other carrier is then moved out of supporting engagement with the article and cleaned while the article is supported by the first carrier. The system also includes a spray booth for depositing the particles on the article which limits the exposure of the carriers to the spray of particles and includes a removable replaceable insert to eliminate the need for cleaning the spray booth when there is a change in the nature of the particles being used, such as color.
Patent CA-2048082-C (CA)
Title: Long period pendulum damping equipment
Inventor: ABIRU HISANORI
IPC: F16F7/10
Filed: 1991-07-29
Granted: 1995-04-25
Abstract: A long period pendulum damping equipment having right and left pair of longer rods, right and left pair of shorter rods and a tie beam connecting these longer rods and shorter rods one another, in which a tilt angle interlocking means of both rods installed at right and left end portions of the tie beam, respectively, and keeping the tilt angle in one direction of the longer rod with respect to a vertical line always equal to the tilt angle in another direction of the shorter rod or certain ratio times thereof is provided, and a long period is provided and an installation space is made small while making the overall height low by pivoting a weight to either one of the longer or shorter rod.
Patent CA-2055394-C (CA)
Title: Apparatus for carrying a sensor in a connector for a catheter adapter and method of use
Inventor: RING WALLACE H
IPC: A61M5/168
Filed: 1991-11-13
Granted: 1994-11-01
Abstract: A connector  carrying  a sensor  for placement in a catheter  adapter has proximal  and  distal  parts  with  a passage  therebetween.   The  distal  part  detachably  fits within a catheter adapter.   The connector, when attached to the adapter, places the passage in fluid communication with and near a catheter lumen.  A sensor on the connector within the distal part is exposed to the passage for fluid communication with the lumen.  The sensor mounts on a tube or in an inside wall of the distal part and extends within the  passage  and  partially  through  the  distal  part  to monitor pressure with a first side of the sensor exposed to the passage and a second side of the sensor covering an exit  from  the  connector  near  the proximal  part.   The second side is vented to atmospheric pressure and a sensor signal  communication means  connects the sensor  to pass signals  from  the  sensor  through  the  exit.   A  sleeve extends distally on the connector for threaded engagement with a male  luer  on  the adapter  allowing  fluid  tight communication between a cavity within the adapter and the passage.  The distal part substantially fills the cavity reducing the hydraulic column volume in the lumen and the passage.   A method places  a  catheter  into  a  human  or animal  to  provide access to dynamic pressure,  measures atmospheric pressure with a sensor carried on a connector, sets the signal response of the sensor measurement to a datum for atmospheric pressure applied to first and second sides and attaches the connector to the adapter to fit the distal part into the cavity in the adapter so gas within the cavity and the passage escapes to provide a hydraulic column substantially free of gas.
Patent CA-2055876-C (CA)
Inventor: MISSIG ROBERT C
IPC: B29C65/64
Filed: 1991-11-20
Granted: 2000-10-03
Abstract: A bushing assembly for use with an associated torque rod comprises a bar pin, an elastomeric bushing, and an outer sleeve. The bar pin has a middle section which is generally rounded but which features a flat portion between 30% and 40% of the axial length of the middle section. The elastomeric bushing bonded to the bar pin is compressively received within the outer sleeve so that the total height is reduced by approximately 10%.      The edges of the outer sleeve axe curled inwardly toward a longitudinal axis of the assembly.
Patent CA-2060878-C (CA)
Title: Process of roasting refractory gold ores
Inventor: FITTING ARNO
IPC: C22B1/10
Filed: 1992-02-07
Granted: 2003-01-28
Abstract: Refractory gold ores are roasted by means of oxygen-containing gases in a circulating fluidized bed at temperatures of 500 to 750°C. The temperature in the lower portion of the fluidized bed contained in the reactor is adjusted to be 4 to 30°C higher than the temperature in the upper portion of the fluidized bed. The fluidizing gas is caused to floor into the reactor at a velocity of 30 to 200 m/sec.
Patent CA-2061612-C (CA)
Title: Strip of collated fasteners for fastener-driving tool
Inventor: DILL MICHAEL C
IPC: F16B15/08
Filed: 1992-02-20
Granted: 1995-05-16
Abstract: In a strip of collated fasteners, each having a shank and a head, a carrier molded from a polymeric material has a sleeve for each fastener.  Each sleeve has an annular portion and a breakable portion, which breaks into two segments as the fastener gripped by such sleeve is driven.  The breakable portion, which is notched at one end, has a pair of similar, laterally opposed, outwardly opening, continuously curved concave recesses with open windows, from which portions of the fastener shank emerges.  In a fastener-guiding tool, parallel ribs of a guiding device fit into such recesses, into close proximity with the emerging portions, so as to guide the strip between such ribs.
Patent CA-2069471-C (CA)
Title: Load sensing device for a boom mounted on a vehicle
Inventor: MUNDIS JAMES W
IPC: B66F17/00
Filed: 1992-05-22
Granted: 1997-02-04
Abstract: The present invention comprises a hydraulic sensing means to be used in connection with a worm/worm wheel gear arrangement for articulating a boom mounted on a vehicle.  A hydraulic chamber on each side of the worm is formed by a bearing retainer and a piston.  A worm thrust in the direction of either hydraulic chamber increases the fluid pressure in that particular chamber, which causes the fluid pressure in a closed hydraulic circuit to increase.   The pressure increase is sensed by a fluid pressure gauge which sends a signal and/or terminates input power to the worm if the increase in fluid pressure is above a predetermined pressure.
Patent CA-2070877-C (CA)
Title: Re-formulated diamox sustets
Inventor: PAYNE NICHOLAS IAN
IPC: A61K31/425
Filed: 1992-06-09
Granted: 2003-02-11
Abstract: A sustained release formulation of the anti-glaucoma drug acetazolamide with improved release characteristics, comprises substantially spherical, essentially binder-free pellets of the drug which are coated with a release-controlling membrane.
Patent CA-2072064-C (CA)
Title: Method of grouting porous gas - and petroleum - bearing formations
Inventor: CLARKE WILLIAM J
IPC: C09K17/02
Filed: 1992-06-23
Granted: 2003-10-14
Abstract: A method of grouting porous gas - and petroleum -bearing formations with a cementitious material (40) comprising ultrafine ground slag is useful for primary and remedial cementing of a wellbore (37). A composition is provided which comprises water, a dispersant, slag and an accelerator to activate the slag.
Patent CA-2072197-C (CA)
Title: High production laser welding assembly and method
Inventor: NEIHEISEL GARY LOUIS
IPC: B23K26/00
Filed: 1992-06-23
Granted: 1998-02-24
Abstract: A method for butt welding metallic sheets along a relatively  long  common  seam  line  by  providing  a plurality of laser welding devices aligned above the common  seam  line,  and effectively spaced  from one another along a longitudinal axis.   In  a preferred embodiment,  each  welding  device  is  independently adjustable in a direction parallel  to  a  transverse axis  which  is  perpendicular  to  the  longitudinal axis.  The metallic sheets are aligned on the upper surface in abutting relationship along the seam line and clamped for welding.   Each  laser welds  only a portion of the sheets along the seam line, and the length of the relative movement between the welding devices and the sheets is greater than the effective spacing  distance between welding  devices  to insure that  a  continuous weld bead  is  provided along the common seam line.
Patent CA-2073728-C (CA)
Title: Sleeve style carton
Inventor: HOELL NORBERT
IPC: B65D71/00
Filed: 1992-07-13
Granted: 1999-05-04
Abstract: SLEEVE STYLE CARTON          Abstract of the Disclosure A sleeve style closed end carton for a can matrix where the cans preferably are the type having necked in head and heel rims.   The carton includes corner flaps that are wrapped around the corner cans of the matrix, the corner flaps, along with the top and  bottom  side  wall  corners,  preferably  being structured to make the tapered portion of each corner can's head and heel partially visible when the carton is viewed in top and bottom views, as well as side elevation  view, thereby in effect  eliminating  the carton's corners.
Patent CA-2074589-C (CA)
Inventor: CARRICK BRYAN W
IPC: A63F3/06
Filed: 1992-07-24
Granted: 2003-09-16
Abstract: A scratch-off coating composition and method for application of the coating to lottery forms, and the like, are provided herein. The scratch-off coating employs a water-based dispersion of acrylic resin, at equal proportions of resin and water, by weight. The dispersion is adjusted to a pH greater than 7.0, and a surfactant is preferably added as a wetting, defoaming and/or dispersing agent. A pigment of metallic particles, e.g., aluminum paste is added, together with a powdered filler, e.g., calcium carbonate, at 5 % to 25 % by weight of the coating composition. The composition can be applied in successive layers, including outer layers of relatively higher proportions of resin for improving wet rub resistance. A number of ink formulations are disclosed for the outer surface layers.
Patent CA-2076445-C (CA)
Title: Determining the complexity of a page prior to a print attempt
Inventor: SATHI KITTY
IPC: H04N1/415
Filed: 1992-08-19
Granted: 1997-03-25
Abstract: An electronic printing system prevents printing failures and interruptions associated with the inability of an image generation subsystem to generate a page image in digital form in real-time by reviewing the page contents prior to submission to the image generation subsystem. The quantity, size, geometry and location of objects on a page are analyzed to generate an internal intermediate description of the page. A determination is made if sufficient resources exist to perform real-time imaging. If real-time imaging cannot be performed, the page will be automatically simplified before the job containing the page is submitted for printing.
Patent CA-2077022-C (CA)
Inventor: NAKATA AKIRA
IPC: D04H3/03
Filed: 1992-08-27
Granted: 1997-02-04
Abstract: A door mat is produced by a method in which a large number of synthetic resin monofilaments are suspended by a molding  roll  formed  by  providing  a  design  pattern  of concave groove on a peripheral surface of the molding roll and a pattern forming roll disposed in opposition to the molding roll which is produced by providing an optional design pattern of convex stripes on its peripheral surface, and the part of the monofilaments is accumulated in loop form in the concave groove formed on the peripheral surface of the molding roll to form an anti-slip layer,  and the other part of the monofilaments is received in loop form on the anti-slip layer and the surface of the molding roll to form  a  reversal  surface  layer,  and  the  balance  of  the monofilaments is received on a water surface lower than the surface of the molding roll to form a surface layer in loop form  on  the  reversal  surface  layer,   and  a  concave decorative pattern by convex stripes of the pattern forming roll is formed whereby the anti-slip surface is provided on the  reversal  surface  of  the  door  mat, and  an  optional design  decorative  pattern  is  integrally  formed  on  the surface layer.
Patent CA-2084561-C (CA)
Title: Vehicle lift and locking mechanism for use therewith
Inventor: CURRAN ROBERT JAMES
IPC: B66F17/00
Filed: 1992-12-04
Granted: 1997-05-06
Abstract: A vehicle lift has a support platform and a pair of scissor mechanisms underneath it for supporting it, and raising and lowering it.   An actuator, for example, an hydraulic cylinder, that is connected between the scissor arms.   The ends of one pair of scissor arms  include rollers for engaging the ground, the rollers permitting the lift to be raised and lowered.   A cart or other lifting device is provided for lifting one end of the lift, to support it on wheels of the cart.  With the other end of the lift supported on the rollers of the scissor arms,  the lift can be freely moved around on a flat surface.   The lift can have a simple ratchet locking mechanism  including  a  cam,  which  provides  a  simple mechanism for locking the lift in a raised position, and for enabling it to be lowered.
Patent CA-2088639-C (CA)
Title: A railway signalling system with two-way data transmission
Inventor: GILL DAVID CAMPBELL
IPC: B61L21/10
Filed: 1993-02-02
Granted: 2002-06-25
Abstract: In a railway signalling system, to achieve inter-vehicle headway spacing for railway vehicles (1) travelling on a track (T), there are a) control of vehicles by fixed block signalling and b) control of vehicles by moving block signalling via communication between vehicles. The moving block signalling occurs within a moving block control zone of the track and the fixed block signalling occurs outside that zone, there being the facility of two-way data transmission between vehicles throughout the moving block control zone and the fixed block signalling system not preventing a further vehicle from entering the moving block control zone when another vehicle is already in that zone and receiving a transmission via the moving block signalling system.
Patent CA-2093835-C (CA)
Title: Thermoplastic resin compositions
Inventor: KITAZAWA NAOKI
IPC: C08L77/00
Filed: 1993-04-13
Granted: 1999-08-31
Abstract: A thermoplastic resin composition has a Component A, Component B, and Component C. Component A represents a polymer having a functional group which can react with an amino group. Alternatively, Component A also contains a resin. Component B represents a thermoplastic resin which is substantially non-reactive with an amino group under molding conditions, and which differs from the thermoplastic resin of Component A. Component C represents a graft polymer obtained by a graft reaction of a thermoplastic polymer with a formamide compound of the general formula (I) or a copolymer having a formamide repeating unit of the general formula (II) and a repeating unit of an ethylenic unsaturated monomer:   (see fig. I) (see fig. II) wherein R1, R2, R3 and R4 each independently represent a hydrogen atom, an alkyl group with 1 to 8 carbon atoms, a cycloalkyl group with 6 to to carbon atoms, an aryl group with 6 to 10 carbon atoms, or an arylalkyl group with 6 to carbon atoms.
Patent CA-2098643-C (CA)
Title: Tire balancing
Inventor: HEFFERNAN MICHAEL
IPC: B60C19/00
Filed: 1993-06-17
Granted: 2002-01-29
Abstract: A method and composition of matter for balancing tire and rim assemblies of vehicles is disclosed wherein the composition of matter has rounded balancing elements of different sizes to line the interior of a tire casing and to move over the lining to offset points of imbalance. The composition of matter may also include a partitioning agent and a suitable desiccant.
Patent CA-2102660-C (CA)
Inventor: YARBROUGH GARRETT S
IPC: H02B1/04
Filed: 1993-11-08
Granted: 2001-09-04
Abstract: A ground fault circuit interrupter (GFCI) circuit breaker test circuit for use with panelboards uses a selector switch, normally open switch, and a resistor to simulate a fault condition at the load output node of any one of several GFCI circuit breakers. This arrangement allows for testing of the circuit breakers while eliminating the need to use an external test actuator to operate the manual test button of each circuit breaker. Thus, shaft penetrations through the panelboard enclosure are minimized, resulting in reduced hazards, increased reliability, easier testing, and greater economy.
Patent CA-2102821-C (CA)
Title: 4-substituted bis(2,6-diisopropylphenyl)- carbodiimides, their preparation, their use, and 4-substituted 2,6-diisopropylphenyl isocyanates which can be used for their preparation
Inventor: POHL SIEGMUND
IPC: C08G18/00
Filed: 1993-11-10
Granted: 1998-11-03
Abstract: 4,4'-disubstituted bis-(2,6-diisopropylphenyl)carbodiimides of the formula (I) (see fig. I) where R is 1-methyl-1-phenylethyl, phenoxy or tert-butyl, a process for their preparation, their use as stabilizers against  hydrolytic  degradation  of  polyaddition  and polycondensation products containing ester groups, and the  novel  4-(1-methyl-1-phenylethyl)-2,6-diisopropyl-, 4-phenoxy-2,6-diisopropyl-    and    4-tert-butyl-2,6-diisopropylphenyl isocyanates which can be used for their preparation.