baber/WOPTO huggingface dataset:
Patent CA-2087658-C (CA)
Title: Toy mirror assembly
Inventor: FROMM WAYNE G
IPC: A63H33/22
Filed: 1993-01-20
Granted: 1994-05-17
Abstract: A hand held toy mirror assembly 10 having one or more hidden images 26 mounted behind the back surface of a two-way mirror 20, one of which images can be seen when a lamp 36 behind the image is lit.  The mirror assembly includes a frame 12, 14, 16, there being a cavity 30 behind the mirror 20, which cavity receives the lamps 36 and a circuit board 48.  A speaker 50 is mounted on the board.  One or more digitized voice tracks is stored in a memory chip 54 mounted on the board.  Electronic switches 52 and 56 select a lamp 36 to be lit when a manually engageable switch is operated, and also cause one of the digitized voice tracks to be broadcast through the speaker, the particular voice track being associated with the illuminated image, the lights and voice tracks preferably being selected in a predetermined manner to follow a script.
Patent CA-2088076-C (CA)
Title: Apparatus for the proportioned feeding of an analysis fluid
Inventor: SCHLUMBERGER HELMUT
IPC: B01L99/00
Filed: 1993-01-26
Granted: 1997-04-15
Abstract: Apparatus for the proportioned feeding of an analysis fluid onto a target, in which the fluid is ejected onto the target in small quanta pulse-wise out of a nozzle through a nozzle outlet opening, provides precise proportioning of analysis fluid quanta which are substantially larger than in the case of the "drop on demand" methods commonly used to date for analysis fluids,  but are on the other hand smaller than the minimum doses achievable to date with diluters  and dispensers; the apparatus comprises a pressure chamber in which the analysis fluid is held under pressure, and a valve unit with a valve opening and a closing element movable by a positioning element, the valve unit is constructed so that the ejection of the fluid is supported by the movement of the closing element during the closure of the valve opening.
Patent CA-2101402-C (CA)
Inventor: MILLS DANIEL MELVIN
IPC: B23Q1/00
Filed: 1993-07-27
Granted: 1999-06-01
Abstract: A multiple-axis machine for positioning a rotary-driven spindle, such positioning being by use of linear motors.  The machine has a support for defining multiple axes, with (i) a rigid vibration-dampening bed defining at least an X-axis; (ii) at least one hollow column defining a Y-axis and having one end adjacent and movable along the bed and the other end extending away from said bed; (iii) a slide adapted for movement along the Y-axis of the column; (iv) a cage rigidly fixed to the slide for defining a Z-axis way; and (v) a hollow ram slidable within the cage and along the Z-axis way and carrying the spindle.  The machine has bearing assemblies interposed between the column one end and the bed, between the column and slide, and between the cage and ram to provide for respective relative movements along the axes, the bearing assemblies being preloaded to provide an interference fit of 10-20% of the maximum bearing loading.  Linear motor assemblies are interposed between the column one end and bed, between the column and slide, and between the cage and ram, the linear motor assemblies are selectably actuatable to impose a linear thrust force upon any or all of the column, slide, or ram for respective movement along the axes.  The ratio of the natural frequency of the support and bearing assemblies to the bandwidth of the control velocity loop is slightly greater than one.
Patent CA-2102358-C (CA)
Title: Thermoplastic elastomer composition
Inventor: UESHIMA TOSHIHUMI
IPC: C08L83/04
Filed: 1993-11-03
Granted: 2000-02-22
Abstract: A thermoplastic elastomer composition comprising (A) 50-98% by weight of a thermoplastic polyester elastomer, (B) 50-2% by weight of a rubber and (C) a polyorganosiloxane in a proportion of 0.01-10 parts by weight per 100 parts of the total of the components (A) and (B). The above thermoplastic elastomer composition enables one to improve the flexibility and compression set of the thermoplastic polyester elastomer excellent mechanical properties, heat resistance and oil resistance without impairing the abrasion resistance of the thermoplastic polyester elastomer.
Patent CA-2119107-C (CA)
Title: Debarking chain quick change fitting
Inventor: CHRONISTER MICHAEL R
IPC: B27L1/12
Filed: 1994-03-15
Granted: 1999-11-09
Abstract: This invention pertains to chains in general and in particular to chains used for removing the bark from logs by flailing or beating. The chain is attached to a hook fixed to the rotating drum. A link of the chain is attached to the hook through a series of lineal, rotational, and transitional movements so that the link is less likely to disengage by random movement of the chain during the debarking operation. This allows individual chains to be removed without removal of the attachment rod and all the chains on the cylinder.
Patent CA-2124770-C (CA)
Title: Voice bus for a computer backplane
Inventor: TOWNSEND BRUCE LEIGH
IPC: H04Q11/04
Filed: 1994-05-31
Granted: 1998-11-03
Abstract: A voice bus on a computer backplane provides point-to-point connection between a plurality of slots on the backplane to a particular slot.  Connection from the plurality of slots is provided by third connectors which lie between first and second connectors defining the slots. Connection to the particular slot is via its respective second connector.  In particular, the computer backplane is physically and electrically compatible with the IEEE standard 1014-1987 defining the VMEbus.  The presence of the third connector is compatible with the VMEbus standard both electrically and physically.
Patent CA-2126104-C (CA)
Title: Printing compound and method
Inventor: SOKYRKA HAROLD W
IPC: C09D11/10
Filed: 1993-10-15
Granted: 1999-09-21
Abstract: A printing compound and method of producing three-dimensional signs and lettering and Braille reading materials is disclosed.  The printing compound includes an ultraviolet radiation curable resin and a filler mixed with the resin to form a paste. The resin can be an acrylated urethane oligomer or an epoxidized oil. The compound is applied to a substrate manually or by a computer controlled dispensing apparatus. The compound is subjected to ultraviolet radiation to cure quickly allowing for mass production.
Patent CA-2127163-C (CA)
Title: Optical waveguide multiplexer for optical fiber amplifiers
Inventor: YOKOYAMA JUN
IPC: G02B6/34
Filed: 1994-06-30
Granted: 1998-07-14
Abstract: An optical waveguide multiplexer for use in optical fiber amplifiers or the like, which is simple in configuration, permits manufacturing at high productivity, and is reduced in size and moreover susceptible to little insertion loss, is to be realized.  A multiplexer-branching filter is provided with first to fourth input/output (I/O) terminals.  Part of an optical signal emitted from the first I/O terminal is reflected by a branching film, formed over one face of a glass plate, and led to the second optical I/O terminal.  The rest of the optical signal penetrates the glass plate, and further penetrates an optical multiplexing film, formed on the other face, to be led to the third optical I/O terminal.  The invention has a particular characteristic that the thickness t of the substrate is set so as to satisfy the condition of t ~ w/cos.theta. x tan [sin -1{(sin.theta.)/n}] where n is the refractive index of the substrate; w, the beam diameter of the output light of the optical I/O terminal for multiplexing the signal light with an pomping light; and .theta., the angle of incidence from this terminal to the substrate.  By setting the substrate thickness at or above the value stated above, the optical path of any leak light from the pomping light side is deviated from that toward the monitor side, and no pomping light can  enter into the monitor.  It is also possible, by adding an aperture film to the substrate, to further reduce the leak light.
Patent CA-2134012-C (CA)
Title: Interface card for testing personal computer main boards
Inventor: PREDKO MICHAEL
IPC: G06F11/28
Filed: 1994-10-21
Granted: 1999-05-11
Abstract: An interface is provided in the form of a card, for plugging into an expansion bus socket of a personal computer main board including a microprocessor, the card having an external interface through which it may be connected to a further personal computer acting as a test controller.  The card carries random access memory which can be written sequentially through the external port and located to a portion of the memory space of the microprocessor normally occupied by a read only memory on the main board.   Once written, the content of the memory can be accessed in a random access  basis  by the main board  in response to addresses appearing on the expansion bus which are in that portion of the memory space.  The board also provides for communication between the test controller and the main board via  an address  in the  input/output port space of  the microprocessor.     This  arrangement  enables  the  test controller to test both programs for use in said read only memory space, and the hardware of the main board, without a substantial investment in specialized hardware.
Patent CA-2135719-C (CA)
Title: Nitrogen/carbon dioxide combination fracture treatment
Inventor: TUDOR ROBIN
IPC: C09K8/70
Filed: 1994-11-14
Granted: 1998-01-20
Abstract: There is provided an apparatus and a method of fracturing an underground formation penetrated by a well bore comprising the steps of forming a first pressurized stream of liquified gas, introducing proppants into the first stream for transport of the proppants in the first stream, pressurizing and  cooling  the  proppants  to  substantially  the  storage pressure  and  temperature  of  the  liquified gas  prior  to introducing the proppants into the first stream, forming a second pressurized stream of gas and admixing the first and second streams to form a fracturing fluid for injection into the formation at a rate and pressure to cause the fracturing thereof.
Patent CA-2135948-C (CA)
Title: Heater control device
Inventor: LANDRY JEAN-MARC
IPC: F02N19/04
Filed: 1994-11-16
Granted: 2004-08-03
Abstract: A control device for a heater in a vehicle. The control device has a thermostatic switch to turn the heater on when the air temperature drops to a first value that is around the temperature at which the engine will just easily start. A secondary heater is provided within the device, turned on when the heater is turned on, to cause the switch to turn the heater off when the switch is heated by the secondary heater to a second temperature that correlates to an outside temperature at which the engine more easily starts.
Patent CA-2136777-C (CA)
Title: Picture display apparatus using electro-optical device
Inventor: YAMAGISHI SHIGEKAZU
IPC: H04N9/31
Filed: 1994-11-28
Granted: 1999-03-30
Abstract: A picture display apparatus which converts an input optical image into a projected picture using a photoelectric effect.  The picture display apparatus includes an image transfer device having a plurality of graded index lenses which are bundled in parallel to an optical axis.  The image transfer device is provided between an electro-optical device and a picture display device so that an input optical image on the picture display device is transferred in equisize onto the photoconductive layer of the electro-optical device.
Patent CA-2141821-C (CA)
Title: Procede haute pression pour l'obtention de copolyamides d'acide terephtalique
Inventor: LEBOEUF CHRISTIAN
IPC: C08G69/26
Filed: 1994-06-08
Granted: 2006-04-04
Abstract: On décrit un procédé de copolymérisation 1) d'un acide carboxylique comprenant de l'acide téréphtalique et leurs mélanges avec de l'acide isophtalique avec 2) un mélange de diamine hexaméthylène et de diamine pentaméthylène 2-méthyle. Au cours du processus de polymérisation, on maintient la pression à 2,15 MPa au moins pendant au moins 40 minutes de façon que le copolyamide résultant, une fois recuit, comporte moins de 1 % en poids, par rapport au poids total du copolyamide, de fractions présentant des points de fusion supérieurs à 320  DEG C. Recourir à des pressions et des durées inférieures tend à favoriser la formation d'une fraction à point de fusion élevé.
Patent CA-2146345-C (CA)
Title: Composite masonry block
Inventor: SIEVERT DICK J
IPC: B28B17/00
Filed: 1993-10-05
Granted: 2001-01-09
Abstract: The invention is a composite masonry block having a front surface (12) and a back surface (18) which are adjoined by first and second side surfaces (14, 16), as well as a top surface (10) and a bottom surface (8) each lying adjacent the front (12), back (18), and first and second side (14, 16) surfaces. Each of the side surfaces (14, 16) has an inset (22A, 22B) spanning from the block top surface (10) to the block bottom surface (8). The block top surface (10) has one or more protrusions (26) positioned adjacent the first and second insets (22A, 22B) on the block top surface (10).  The blocks of the invention comprise back legs (24A, 24B) which are directed outwardly from the blocks back surface (18). The block back legs (24A, 24B) may extend in a plane parallel to the block front surface (12) or extend forwardly toward the blocks front surface (12). In use, the blocks may be stacked to provide an interlocking structure wherein the protrusions (26) of one block interfit within the insets (22A, 22B) of another block. The invention also comprises a method of block molding and a mold assembly which may be used to make a block which may be stackable to form structures of varying setback.
Patent CA-2148796-C (CA)
Title: Monopolar wire-plate antenna
Inventor: DELAVEAUD CHRISTOPHE
IPC: H01Q5/321
Filed: 1994-09-06
Granted: 2004-07-13
Abstract: The invention relates to a monopolar wire-plate antenna comprising a ground plane (10), a first radiating element configured like a capacitive roof (11, 12) and connectable to a generator, and a second radiating element configured like a conductive wire (14, 14', 15, 15') connecting the capacitive roof to the ground plane. It is also provided with a plurality of at least one of said radiating elements.
Patent CA-2154926-C (CA)
Title: Body fitting compound sanitary napkin
Inventor: MAYER KATHERINE LOUISE
IPC: A61F13/15
Filed: 1995-07-28
Granted: 2000-01-04
Abstract: A compound sanitary napkin including a primary absorbent member and a secondary absorbent member. The primary absorbent member has a length and a width. The secondary absorbent member has a length and a width. The primary absorbent member and the secondary absorbent member have a common length. The primary absorbent member includes an absorbent core and a fluid pervious topsheet superposed on the absorbent core. The secondary absorbent member includes a fluid pervious topsheet, a fluid impervious backsheet joined to the topsheet and an absorbent element positioned between the topsheet and the backsheet. The primary absorbentmember is affixed to the secondary absorbent member by union means. The primary absorbent member is compressible when subjected to a compressive force exerted about its periphery and is sufficiently resilient such that said primary absorbent member is able to return substantially to its original unstressed configuration once the compressive force is removed.
Patent CA-2155409-C (CA)
Inventor: SLAUGH LYNN HENRY
IPC: C07C47/19
Filed: 1994-02-03
Granted: 2006-03-21
Abstract: This invention relates to a process for making 1,3-diols and 3-hydroxyaldehydes by hydroformylating 1,2-epoxides which process comprises intimately contacting (a) a 1,2-epoxide having more than 2 carbon atoms, (b) ditertiary phosphine-modified cobalt carbonyl catalyst, said phosphine comprising a hydrocarbylene-bis(monophosphabicyclo-alkane) in which each phosphorus atom is joined to hydrocarbylene and is a member of a bridge linkage without being a bridgehead atom and which hydrocarbylene-bis(monophosphabicycloalkane) has 11 to 300 carbon atoms; of which 5 to 12 carbon atoms together with a phosphorus atom are members of each of the two bicyclic skeletal structures, (c) carbon monoxide, and (d) hydrogen, the molar ratio of carbon monoxide to hydrogen being from 4:1 to 1:6, preferably from 1:1 to 1:4 in liquid-phase solution in an inert reaction solvent, at a temperature of from 30 to 150 °C and a pressure of from 345 to 68948 kPa (50 to 10,000 psi).
Patent CA-2155580-C (CA)
Title: Dispositif d'ancrage portatif
Inventor: LACHANCE CONRAD
IPC: E04H15/62
Filed: 1995-08-08
Granted: 1996-10-01
Abstract: Dans un dispositif d'attache portatif, destiné à être enfoncé dans le sol, on sait que le caractère démontable, de même que les qualités de sûreté et de facilité de manipulation sont des facteurs importants à considérer. Dans la présente invention, le dispositif d'attache est muni d'une croix à deux membres coulissants, de deux tiges à bouts piquants et à tête à marteler, les têtes étant munies d'oeillets superposables pouvant être cadenassés. De tels oeillets, surplombant le sol, permettent d'ancrer tout objet dont on veut assurer la stabilité, voire la protection contre le vol. Le dispositif d'attache comporte aussi un adaptateur à deux parties anguleuses dont une première permet d'ancrer tout objet tridimensionnel et une deuxième comprend un manchon pouvant recevoir et orienter un des deux membres coulissants de la croix.
Patent CA-2157002-C (CA)
Title: Petroleum fuel antifoam additives
Inventor: LOMBARDI ALESSANDRO
IPC: C10L1/28
Filed: 1994-02-24
Granted: 2004-07-27
Abstract: Petroleum fuel antifoams are used to control foaming in blends of petroleum-based fuel oil with biofuel.
Patent CA-2158355-C (CA)
Title: Automatic vehicle traffic control and location system
Inventor: HOELSCHER JAMES R
IPC: B61L3/00
Filed: 1994-03-30
Granted: 1999-02-02
Abstract: A signaling and traffic control system which is capable of a vehicle (2) determining its own absolute position along a guideway (21) based on information received from the wayside (25) using an inductive loop or beacon system (26) in conjunction with the distance traveled according to the onboard tach generator(s) (12), and report its position to a wayside control system (Fig. 3) whereby the wayside control system (Fig. 3) reports to the vehicle (2), as part of its communications message, the location of the closest forward obstacle. Based upon this information, the vehicle (2) controls itself safely based upon its characteristics as contained in a topographical database (106) and a vehicle database (108).
Patent CA-2172262-C (CA)
Title: Atm switch in dual switch plane operation
Inventor: MCGILL RICHARD THOMAS
IPC: H04L12/56
Filed: 1995-03-15
Granted: 2001-01-16
Abstract: A novel ATM switch of dual switch plane operation and method of switching traffic in unit cells among ports in dual switch planes are disclosed. The ATM switch of the invention is plane protected in that a redundant switch plane is provided. In the switch, traffic cells are tagged either symmetric or asymmetric at an ingress port so that a destination port is able to properly gather correct cells even when switch planes develop faults or quality degradation.
Patent CA-2172643-C (CA)
Title: Multiplex holography
Inventor: CURTIS KEVIN
IPC: G03H1/22
Filed: 1996-03-26
Granted: 2000-02-15
Abstract: Use of an aperture in the reconstructed beam in reconstruction of multiple holograms increases selectivity beyond that realizable by spatial multiplexing so as to permit differentiation of overlapping images. "Aperturization" is suitably used for differentiation in the y-direction in shift holography, depending on Bragg selection in the x-direction.
Patent CA-2173945-C (CA)
Inventor: WONG VINCENT YORK-LEUNG
IPC: A23L25/10
Filed: 1994-09-29
Granted: 1999-11-30
Abstract: A process for preparing a high protein or low fat nut spread having desirable fluidity, texture and flavor. The process comprises as a first step depositing a nut paste in a mixing tank. Next, the solid ingredients which are to be present in the final product spread are mixed into the tank containing the peanut paste. The Casson plastic viscosity of the mixture is adjusted to about 30 poise or less. This mixture is then pumped through a homogenizer and a colloid mill or series of colloid mills. Nut spreads having a bimodal particle size distribution such that at least 50 % of the solids in the nut spread have a particle size of less than 18 microns and 90 % of the solids in the nut spread have a particle size of less than 60 microns, and further having a Casson plastic viscosity of from about 8 to about 17 poise and a yield value of less than about 300 dynes per square centimeter are produced according to this process.
Patent CA-2176470-C (CA)
Title: Simultaneous demodulation and decoding of a digitally modulated radio signal
Inventor: DENT PAUL W
IPC: H03M13/35
Filed: 1995-09-14
Granted: 2008-09-02
Abstract: Systems and methods according to the present invention provide a combination of demodulation and decoding, termed decodulation herein.  By using knowledge of known symbols, decoding known symbols first, and then using the information obtained by decoding known symbols to decode unknown symbols, improved performance can be achieved.  This technique can also be used to alleviate the conventional 3dB loss suffered systems using differentially coding and modulation as compared to coherent detection systems.
Patent CA-2176551-C (CA)
Inventor: KIM JIN DONG
IPC: H03F3/189
Filed: 1996-05-14
Granted: 1999-06-15
Abstract: A unique method and apparatus modifies the load  impedance  at the output of a power amplifier by varying a voltage variable capacitor (VVC) (310) to maximize the efficiency of the power amplifier (304). A comparator (509) generates amplifier control signal (211) based upon a detected power output signal (216) and a reference signal. In addition to providing power control, the control signal is also coupled  to  a  VVC circuit (506) to control the output impedance of the power amplifier. In an alternate embodiment, a separate VVC control signal (527) based upon a comparison of the power control signal and the battery voltage is coupled to a VVC.  In another alternate embodiment, a second VVC can be coupled in parallel to the first VVC.  The second VVC is preferably controlled by a signal (805) based upon the current in the power amplifier. Finally, an alternate embodiment incorporates a VVC circuit (506) at the input of the power amplifier to compensate for variations in input impedance to improve other power amplifier parameters such as IM, gain, output power and noise level.
Patent CA-2181613-C (CA)
Inventor: BETTS JAMES A
IPC: C25B1/26
Filed: 1996-07-19
Granted: 1999-11-16
Abstract: Control of sulfate and perchlorate impurity levels is provided in a procedure for manufacturing crystalline sodium chlorate by electrolyzing an aqueous solution of sodium chloride and crystallizing sodium chlorate from the resulting aqueous solution of sodium chlorate and sodium chloride.        The mother liquor from the crystallization, or a portion thereof, is treated simultaneously with calcium chloride to remove sulfate ions by precipitating calcium sulfate and with potassium chloride to remove perchlorate ions by precipitating potassium perchlorate.