baber/WOPTO huggingface dataset:
Patent CA-2002353-C (CA)
Title: Optical sensing apparatus and method
Inventor: HARTMAN NILE F
IPC: G01N21/45
Filed: 1989-11-03
Granted: 1995-01-17
Abstract: The invention is directed to optical devices and techniques for sensing properties of an environment with improved stability and lower cost.  In a disclosed embodiment of the invention, the method for sensing a property of an environment includes the steps of providing an optical waveguide in the environment and injecting a light beam into the waveguide such that at least two modes of the beam propagate in the waveguide, the effective index of refraction for the modes of the beam being affected by the property to be sensed.  A further step of the invention includes generating an electrical signal representative of the interfering product of the at least two modes of the beam which have propagated through the waveguide.  The signal is indicative of the property of the environment.  In a disclosed embodiment of the apparatus of the invention, there is provided a substrate having an index of refraction ns.  A waveguide layer is provided and has a surface adjacent the substrate, the waveguide layer having an index of refraction nf that is greater than ns.  A superstrate is provided adjacent the opposing surface of the waveguide layer, the superstrate having an index of refraction nc that is less than nf, the index of refraction of the superstrate being affected by the environment.  Means are provided for injecting an optical beam into the waveguide layer such that at least two modes of the beam propagate in the waveguide layer.  Means are also provided for detecting the interfering product of said at least two modes of the beam which have propagated through the waveguide layer.
Patent CA-2010462-C (CA)
Title: Radial tire
Inventor: KAWAMURA KAZUHIKO
IPC: B60C11/18
Filed: 1990-02-20
Granted: 1997-03-18
Abstract: A radial tire which is provided herein has a tread comprising a central portion and two lateral shoulder portions made of a rubber composition which is different from that of the central portion. The axial distance of each of the boundaries between the radially-outer surface of the central portion and the radially-outer surfaces of the shoulder portions from the tire equator are not less than 0.15 times and not more than 0.3 times the tread width. The tread includes a shoulder portion and two shoulder portions. The tread is provided with two circumferentially-extending grooves, the boundary between the central portion and each shoulder portion being located within the width of each of the grooves in the tread. The rubber composition of the shoulder portions consists of: natural rubber, butadiene rubber of which trans-1,4-bond content is not less than 54% and less than 70%, and carbon black of 10 to 30 microns in particle diameter. The ratio of the natural rubber content to the butadiene rubber content in part-by-weight unit is 85/15 to 20/80. The carbon black content is 20 to 70 parts by weight. The Shore-A hardness of the shoulder portion is larger than the Shore-A hardness of the central portion. The difference between the Shore-A hardness of the shoulder portion and the Shore-A hardness of the central portion is 2 degrees and not more than 6 degrees. The Shore-A hardness of the shoulder portion is in the range of 65 to 75 degrees, and the Shore-A hardness of the central portion is in the range of 60 to 70 degrees.
Patent CA-2012854-C (CA)
Inventor: MISENCIK JOHN JOSEPH
IPC: H02H9/04
Filed: 1990-03-22
Granted: 1999-06-22
Abstract: Surge  suppression  is  provided   by  varistors connected between,  respectively, hot  and neutral conductors and hot and ground conductors, each through  a common fuse that  avoids hazardous overvoltages on the varistors. A first indicator circuit  portion provides  an indication that the  power is  on and surge protection is present and includes a first indicator device such  as a  green light-emitting diode  that is energized when the fuse is intact, and a second indicator  circuit  portion  is  provided for indicating  power  is  on  and surge protection is lacking that includes a second  indicator  device  such  as  a red light-emitting  diode   that  is  energized  by  the  line conductors when the fuse has been interrupted.   The surge suppressor and  dual indicator  apparatus can be contained within a  wiring device  such as  a receptacle.   A single varistor  unit  containing  two  varistor disks with three leads, including  a  center  tap,  allows  three effective surge suppressor  circuit branches in a compact configuration.
Patent CA-2014402-C (CA)
Title: Multi-packs with end stacks of containers
Inventor: SAULAS ALAIN
IPC: B65D71/28
Filed: 1990-04-11
Granted: 2001-07-31
Abstract: A package comprises a paperboard wrapper 10 wrapped about and retaining a group of containers (C). The containers are arranged to provide a pair of end stacks (C1, C2) one at each end of the package in which each end stack comprises a set of containers stacked coaxially and one or more central containers (Cn) disposed between the end stacks, each central container having its axis perpendicular to those in the end stacks.
Patent CA-2019178-C (CA)
Inventor: NAITO TAKAO
IPC: H04B10/516
Filed: 1990-06-18
Granted: 1994-05-24
Abstract: ABSTRACT OF THE DISCLOSURE         A direct modulation PSK system and method, in a coherent optical fiber transmission system, in which an injection current supplied to a laser diode is adapted to be directly varied is disclosed.  In this system or method, a modulating current pulse is superposed on a bias current for the laser diode so that a specified phase condition may be satisfied.  Thereby, a differential coding circuit and an external modulator being indispensable for a DPSK system become unnecessary and, in addition, the system becomes less susceptible to the influence of wavelength dispersion than the DPSK system and able to reproduce the carrier.
Patent CA-2021281-C (CA)
Title: Unit for amplifying light signals in optical fiber transmission lines
Inventor: GRASSO GIORGIO
IPC: H04B10/29
Filed: 1990-07-16
Granted: 1994-05-24
Abstract: ABSTRACT OF THE DISCLOSURE      A unit for amplifying light signals in optical fiber transmission lines includes a fiber optical amplifier to which light signals are transmitted through an input optical fiber line, and from which the signals, after having been amplified, are introduced into an output optical fiber line.  First and second optical isolators are interposed between the fiber optical amplifier and the input and output lines to prevent the transmission of optical noise signals from the input and output lines, respectively, to the amplifier.
Patent CA-2022818-C (CA)
Title: Storage tank assembly for bulk fat and method for using same
Inventor: MORRIS ROBERT D II
IPC: F24H1/20
Filed: 1990-08-07
Granted: 1996-03-19
Abstract: The present invention comprises an enclosed tank for containing fat.  The bottom wall is cone shaped and at the lower end of the cone is an outlet opening.  A valve is placed in the opening to permit fluid to be added to or drained from the tank.          A heater element is placed in the bottom of the tank or immediately below the bottom of the wall of the tank and can be an electrical heated element, a helical tube containing steam or hot water, or a gas powered infrared heater.  A circulation system permits the removal of fat from the bottom of the tank and the recirculating of the fat to the upper portion of the tank.  A valve within the recirculation system permits the fat to be pumped to a spray nozzle where it can be sprayed onto a feed mixture for animals.
Patent CA-2026967-C (CA)
Inventor: TSUCHIDA NAOYUKI
IPC: C22B3/44
Filed: 1990-10-04
Granted: 1995-12-19
Abstract: A chloride solution containing not more than 130 g/? of nickel ions, 0.05 to 0.2 g/? of divalent iron ions and cobalt ions is prepared.  The solution is brought into reaction with not less than 1 equivalent of chlorine with respect to the total amount of iron ions and cabalt ions contained in the solution, thereby removing cobalt from the chloride solution.
Patent CA-2028594-C (CA)
Title: Fuel injection control system for a two-cycle engine
Inventor: KUROSU SHINICHI
IPC: F02B75/02
Filed: 1990-10-25
Granted: 1995-10-10
Abstract: A crankcase temperature sensor is provided for detecting temperature of a crankcase.  A low speed basic injection pulse width is provided based on the detected crankcase temperature for low engine speed.  An ordinary fuel injection pulse width is provided in accordance with engine operating conditions for ordinary engine operating condition.  A comparator is provided for comparing the low speed injection pulse width and the ordinary fuel injection pulse width with each other.  A larger injection pulse width is determined for injecting fuel.
Patent CA-2039862-C (CA)
Title: Container for transporting hazardous liquids
Inventor: INSLEY THOMAS I
IPC: B65D88/12
Filed: 1991-04-05
Granted: 2001-08-21
Abstract: A container for transporting hazardous liquids has a self-sustaining, leak-proof housing, a removable cover that can seal the housing, and a sorbent body resting on the flat bottom of the housing, which body comprises polyolefin microfibers and has a solidity of from 7 to 25%. The polyolefin microfibers preferably are particles, and the particles preferably are microwebs produced by divellicating a polyolefin microfiber web.      When the container is used to transport sorbent materials that have been saturated by liquids of a chemical spill, the sorbent body ensures against there being any free liquid in the container.
Patent CA-2040922-C (CA)
Title: Racetrack design
Inventor: HERBERT RICHARD A
IPC: A63K1/00
Filed: 1991-04-22
Granted: 1994-09-06
Abstract: A means and method for modifying the width of a racing surface of a racetrack having a movable barrier positioned between a stationary outer barrier and a stationary inner barrier,  the movable barrier comprising pylons having a removable tethering means connecting the movable barrier to the inner stationary barrier, and also having a limiting means to enable the user to place the movable pylons in generally the same position prior to the beginning of every race.  During the course of the race, the user will move the movable pylons off of the racing surface, thus increasing the width of the racing surface available to the horse and driver.
Patent CA-2041737-C (CA)
Title: Improve interzone mixing device
Inventor: ROSSETTI SALVATORE JOSEPH
IPC: B01F5/06
Filed: 1991-05-02
Granted: 2002-04-09
Abstract: The fluid mixing device of the present invention comprises: a vertically disposed vessel having a fluid inlet means and a fluid outlet means permitting the flow of fluid generally vertically through the vessel; a horizontally disposed first plate having a first surface, a second surface and a central opening in the plate; a cylindrical cap having a vertical side wall extending vertically from the first surface of the first plate, sized and positioned to cover the central opening in the first plate, the cap having a plurality of angular slots in the side wall to direct the flow of fluid passing therethrough in a swirling direction toward the central opening in the first plate; a horizontally disposed second plate having a first surface, a second surface and a plurali-ty of openings in an annular ring around the periphery of the second plate, the first surface of the second plate facing but spaced apart from the second surface of the first plate. A horizontally disposed circular table is positioned on the first surface of the second plate and axially aligned with the central opening in the first plate. A plurality of conduits extend vertically from the second surface of the second plate and communicate with the peripheral openings therein, the conduits having slots therein oriented at predeter-mined angle with respect to the radius of the vessel.      A third horizontally disposed plate, having a central opening therein, is spaced apart from the second surface of the second plate and defines a jet stirred mixing zone there between. A horizontally disposed fluid distribution plate is spaced apart from the third plate and has a plurality of openings therein whereby fluids contacting the plate are distributed by flowing through the openings therein. Means for introducing a fluid stream, from an external source, to the vessel on the first surface side of the first plate is also provided.
Patent CA-2045176-C (CA)
Title: Communications device with movable element control interface
Inventor: METROKA MICHAEL P
IPC: H04M1/724
Filed: 1990-11-01
Granted: 1994-11-08
Abstract: A portable radiotelephone with a keypad (110), alphanumeric character display (416) and hands free function (450) is dis-closed. A movable flip element (104) of the housing covers a keypad (110) and other control buttons when in a closed, on-hook, position and activates the illumination of the keypad (110), enables the display (416), and enables the hands free function (450) when in an open, off-hook, position. The duration of keypad (110) illumination and display (416) activation are timed to reduce battery drain and the hands free function (450) may be deactivated with a hookswitch flash.
Patent CA-2046894-C (CA)
Title: Magnetically responsive fluorescent polymer particles and application thereof
Inventor: WANG CHAO-HUEI J
IPC: C12Q1/68
Filed: 1990-12-12
Granted: 1999-10-19
Abstract: This invention provides a novel process of producing magnetically responsive fluorescent polymer particles comprising polymeric core particles coated evenly with a layer of polymer containing magnetically responsive metal oxide. A wide variety of polymeric particles with sixes ranging from 1 to 100 microns can be used as core particles and transformed into magnetically responsive polymer particles. The surface of these magnetically responsive polymer particles can be coated further with another layer of functionalized polymer. These magnetically responsive fluorescent polymer particles can be used for passive or covalent coupling of biological material such as antigens, antibodies, enzymes or DNA/RNA hybridisation and used as solid phase for various types of immunoassays, DNA/RNA hybridization probes assays, affinity purification, cell separation and other medical, diagnostic, and industrial applications.
Patent CA-2050701-C (CA)
Inventor: ARMOR JOHN NELSON
IPC: C01B32/336
Filed: 1991-09-05
Granted: 1996-11-12
Abstract: A process is provided for making a modified carbon molecular sieve which is suitable for separating  gases having different adsorption rates on the sieve.  The process involves modifying a starting sieve support having a majority of micropores with an effective pore size of about 4.5 to 20 angstroms, with a two-step process in which the sieve is contacted with two different concentrations of a volatile carbon-containing organic compound, preferably a hydrocarbon.  The concentration of the carbon-containing compound used in the first step is larger than that in the second step, so that the pore openings of the micropores of the support are narrowed successively in two distinct steps without filling the micropores themselves.  The invention also discloses an improved carbon molecular sieve and the separation of gases, such as oxygen from nitrogen, by the use of this improved adsorbent.
Patent CA-2051221-C (CA)
Title: Method of manufacturing a bimetal casting and wearing part produced by this method
Inventor: GUERARD NORBERT
IPC: B02C13/28
Filed: 1991-09-12
Granted: 1999-03-30
Abstract: The method consists in casting an insert in a first mould,  in disposing the insert thus cast in a second mould and in casting the part in this second mould around the insert in such a way as to form a mechanical bond between the two castings.            The wearing part thus cast advantageously comprises an insert having a high resistance to wear while the rest of the part is made of a more ductile material which is resistant to mechanical stresses.            Application to crushing wheels and to crusher hammers.
Patent CA-2053313-C (CA)
Inventor: LABEDZ GERALD P
IPC: H04M11/00
Filed: 1990-05-02
Granted: 1994-12-06
Abstract: There is provided a method of rapid Received Signal Strength Indication (RSSI) of a time-dispersed signal having echoes (where the time dispersal represents a significant fraction or more of the transmitted symbol interval). It comprises a sliding correlation (304) of a received signal against a known sequence or via channel sounding to obtain the time-dispersal function of the communications channel upon which the signal is transmitted and a summation of the squares of the quadrature components of the energies at relative maxima of the correlations (306) (correlation peaks determined with reference to a threshold level) (305) to integrate the energy defined by the correlation function to determine the energy present among the time-dispersed echoes utiliz-ing the time-dispersal function. Thus, the energy present in the time-dispersed echoes is related to the received signal strength (307), the RSSI comprises a scalar of the energy present and the scalar comprises a function of the receiver's gain, RSSI determi-nations during any given interval are less dependent upon the ambulatory velocity of the receiver, and RSSI determinations of equivalent accuracy are obtained more rapidly or more accurate RSSI determinations are obtained per unit time.
Patent CA-2060470-C (CA)
Inventor: ENTRUP HUBERT GROSSE
IPC: F16D1/05
Filed: 1992-01-31
Granted: 1997-03-25
Abstract: The invention relates to a lock 7    for non-rotatingly and axially  securing  a coupling  sleeve  6  on a  power  take-off shaft  4 or driving  journal  5  of  a  self-driving  implement or  tractor  1.  To  achieve  a  clearance-free  rotatable  and axial  connection  between  the coupling  sleeve  6  and  power take-off shaft 4 or driving journal  5,  there  is provided a locking element which, via at least one locking face 15, at least partially engages an annular groove 12 of the power take-off  shaft  4  or  driving  journal  5  and  permits  a clearance-free, unfastenable connection. The locking element may be an internally hexagonal bolt 16 which, via a conical locking face 15, engages the annular groove 12.
Patent CA-2065074-C (CA)
Title: Electric power cable line and a method of fabricating the same
Inventor: SAKAGUCHI HISAO
IPC: H01B9/02
Filed: 1992-04-03
Granted: 1997-10-14
Abstract: An electric power cable line is arranged in which the insulating layer is increased to a greater thickness at two end portions of each cable than a thickness at the other or center portion of the same.  Since the insulating layer is increased in thickness at the end portions of the cable, thus an electrical stress exerted on the overall layer construction of the end portions is lowered.  Hence, the dielectric strength of the end portions of the cable becomes high and the power cable line will thus be increased in the operational reliability.
Patent CA-2067271-C (CA)
Title: Mobile hydraulic shear convertible to tire or wood applications
Inventor: LABOUNTY ROY E
IPC: B23D17/00
Filed: 1992-04-27
Granted: 1995-06-06
Abstract: A heavy duty mobile wood and tire shear having a lower stationary jaw rigidly attachable to the dipper stick of a hydraulic excavator.  The lower jaw has a forwardly extending face plate for receiving and supporting the workpiece with two forwardly extending tines.  An upper C-shaped swingable jaw is pivotally mounted to the lower jaw and connected to the hydraulic cylinder of the dipper stick.  The swingable jaw has a cutting blade with a knife-like edge.  The upper jaw swings between open and closed positions relative to the lower jaw as to bring the cutting blade down upon the face plate as to penetrate and shear through wood. Shearing blades are releasably affixable along the knife-like edge of the cutting blade and along the face plate as to bring the shearing blades into shearing relation as the upper jaw approaches the closed position as to also shear through tires.
Patent CA-2069363-C (CA)
Title: Thermal annealing of palladium alloys
Inventor: ABYS JOSEPH A
IPC: H01R43/16
Filed: 1992-05-25
Granted: 1999-05-18
Abstract: This invention is concerned with production of electrical devices comprising an electrodeposited conductive region free from cracking defects. In the production of a contact portion of the device from a metal strip electroplated with a conductive stripe of an alloy, the stripe exhibited, upon stamping and forrning operation, cracked areas. Typically, the stripe coating on the metal strip, such as a copper bronze material, includes a layer of nickel, a layer of palladium alloyed with nickel, cobalt, arsenic or silver, and a flash coating of hard gold. The cracking defects were eliminated by subjecting the plated strip to an annealing treatment prior to the stamping and forming operation. After the heat-treatment, the stripe was free from cracks and separations between the successive layers.
Patent CA-2073682-C (CA)
Title: Process of forming fiber reinforced molded plastic articles and preforms therefor using a photosetting binder
Inventor: BOECKELER RUDOLPH HENRY
IPC: B29K105/06
Filed: 1990-12-19
Granted: 2002-02-19
Abstract: The invention relates to a method of making fiber reinforced molded articles and preforms for use in the manufacture of such molded articles which includes the steps of applying a layer of reinforcing fibers, preferably glass fibers, on a preform mold surface which has a configuration corresponding to at least a portion of the final molded article, coating the fibers with an ultrav-iolet light curable composition which contains a photohardenable material polymerizable under UV light and a polymerization photoinitiator, exposing the coated fibers to UV light to cure the composition, and removing the resulting preform from the pre-form mold surface. The preform is subsequently used by placing it and a deformable plastic material in a mold, where an article containing the plastic reinforced by the fibers is formed.
Patent CA-2075114-C (CA)
Title: Ink jet recording apparatus capable of emphasizing the density of black
Inventor: MATSUBARA MIYUKI
IPC: B41J2/21
Filed: 1992-07-31
Granted: 1999-04-06
Abstract: This specification discloses an ink jet recording apparatus in which the density of black can be emphasized as compared with that of the other colors, with time cost, hue and blur in the boundary between different colors being suppressed, and wherein when ink is impacted from a multihead to all picture elements in a predetermined area, discharge by a plurality of multinozzles is effected to an image datum at the same position and in the same scan with an amount of ink per discharge for which the area factor in the area is less than 100% and the amount of ink per discharge from a multihead for one color is made greater than that for the other colors.
Patent CA-2086387-C (CA)
Title: Audio circuit board for a modular digital voice processing system
Inventor: DALY DANIEL F
IPC: H04M3/50
Filed: 1992-12-29
Granted: 1997-03-18
Abstract: An audio circuit module or card for digital voice processing system wherein voice processing functions are run in software.  The audio card includes a time division multiplexer (TDM) chip that communicates with a TDM bus, a processor connected to the TDM chip and in interface. the audio card has ports that are in communication with telephone lines through which different modes of operation are achievable.
Patent CA-2098301-C (CA)
Inventor: THURKAUF ANDREW Y
IPC: C07D401/04
Filed: 1991-12-23
Granted: 2001-12-04
Abstract: This invention encompasses compounds of formulas (I), (II), and (III) where R1 , R3, R4, R6, X, Y, and Z and T are variables; and M is .alpha. or .beta., where R2 is a variable; or R1 and R2 together may represent -(CH2)n1 where n1 is 1, 2, or 3. These compounds are highly selective partial agonists or antagonists at brain dopamine receptor subtypes or prodrugs thereof and are useful in the diagnosis and treatment of affective disorders such as schizophrenia and depression as well as certain movement disorders such as Parkinsonism. Furthermore compounds of this invention may be useful in treating the extraparamidyl side effects associated with the use of conventional neuroleptic agents.