baber/WOPTO huggingface dataset:
Patent CA-2060117-C (CA)
Title: Predistorter for linearization of electronic and optical signals
Inventor: BLAUVELT HENRY A
IPC: H04B10/2557
Filed: 1992-01-28
Granted: 1995-12-12
Abstract: An electronic circuit provides a linear output from an amplitude modulated transmission device such as a semiconductor laser which has inherent distortion. The distortion of the nonlinear device is compensated by applying a predistorted signal equal in magnitude and opposite in sign to the distortion introduced by the nonlinear device.  The input signal is split into two or three paths with primary part of the signal applied directly to the device, with a time delay to compensate for delays in two secondary paths.   One secondary path generates even order intermodulation products   and   the   other   generates   odd order intermodulation products.   These are recombined with the primary signal in proper phase and amplitude for cancelling  distortion  in  the  output  device.    A distortion generator in each secondary path generates adjustable amplitude intermodulation signals.  A tilt adjustment is made to compensate the amplitude of the predistortion for frequency dependence of the amplitude of the distortion.  Phase of the distortion signal is adjusted to be  in proper phase relation with the distortion of the device.  In the even order path there are  means   for   adjusting  predistortion   at   an intermediate  frequency  so  that  the  distortion  is cancelled  near  the  upper,  lower  and  intermediate portions of the frequency range of the device.   If desired, set points of the predistorter may be adjusted automatically.
Patent CA-2063898-C (CA)
Title: Automatic bundle loading apparatus and method
Inventor: SJOGREN CHRISTER A
IPC: B65G57/24
Filed: 1992-03-24
Granted: 1995-09-05
Abstract: In an automatic loading system and method, wheeled carts  receive, e.g.,  five or  six  layers  of  newspaper bundles of, e.g., four to six bundles per layer.  Conveyors move bundles to a platform of independently-operated sec-tions selectively halted upon receipt of a bundle.  Struc-ture is provided for selectively advancing bundles along the sections, the structure including elements to halt the advancing of bundles on each section responsive to detec-tion of a bundle on the section.   Pusher elements are responsive to the presence of bundles upon predetermined ones of the sections for pushing the bundles in a trans-verse direction onto a split platform.  The split platform comprises first and second platform sections which are movable between a closed position, wherein adjacent edges of the platform sections are in close proximity, and an open position wherein the sections are moved apart to define a gap region between the split platform sections, the gap region being positioned immediately above the open end of the cart.  Structure is responsive to delivery of bundles by the pusher elements upon the split platform assembly for moving the split platform sections apart, whereupon the bundles resting thereon are dropped through the gap region toward the cart.
Patent CA-2065961-C (CA)
Title: Flask cap
Inventor: DE SANTANA GILDETE VITORIA
IPC: B65D41/34
Filed: 1992-04-14
Granted: 2000-02-22
Abstract: An inviolable cap for a flask which provides proof when tampered with. The cap has an interconnecting wall in a region where the body and the band of the cap adjoin one another. The wall includes a plurality of cut segments aligned in a circular fashion thereabout separated by a plurality of transverse interruptions, with one of the interruptions being at least twice as long as any of the out segments and the rest of the transverse interruptions being substantially shorter than any of the cut segments.      The band further includes a vertical cut with vertical interruptions. A projection on the band fits about a collar on the flask. When the cap is unscrewed, the shorter transverse and the vertical interruptions sever.
Patent CA-2071450-C (CA)
Title: Pig-compatible three-way butterlfy valve
Inventor: LE DEVEHAT EUGENE
IPC: F16L55/46
Filed: 1992-06-17
Granted: 1999-01-26
Abstract: A pig-compatible three-way valve (1) incorporates a tubular main section (2), adapted so that a pig can pass through it and a tubular secondary section (5) connected at right angles to this main section opposite an opening (7)  determined  by  the   intersection  of  the   inner cylindrical wall of the main section with a surface (3) in the shape of a portion of a sphere oriented towards the  tubular  secondary  section.     A  moving  element selectively closing the opening incorporates a butterfly-type disk (30), eccentric with respect to a control shaft (20) disposed on the side of this tubular secondary section, designed to   seal completely this  opening  (7)  by  following the line of this surface shaped as a portion of a sphere, at this point completing the inner cylindrical surface of the tubular main section.
Patent CA-2072697-C (CA)
Inventor: KAPLAN VLADIMIR
IPC: F28C1/04
Filed: 1992-06-29
Granted: 1994-06-21
Abstract: A bottom fed fluid distribution system is provided which may be used to uniformly distribute fluid to an underlying structure.          The  distribution  system  comprises  a  distribution  pan,  fluid transporting flume, and inlet chamber.   The fluid transporting flume is positioned inside the back edge of the distribution pan and is elevated above the bottom of the pan.   The flume has an opening in its bottom to allow fluid to flow downwardly into the distribution pan.  The inlet chamber is located at the back edge and at one side of the distribution pan.   Fluid flows into the bottom of the inlet chamber and then into the flume.  As the fluid is flowing all along the length of the flume, a portion of the fluid flows downwardly through the opening in the bottom of the flume and into the distribution pan.
Patent CA-2078140-C (CA)
Title: A method of producing a protective gas and a gas mixture
Inventor: HAMMARLUND NILS
IPC: B01F23/10
Filed: 1991-02-21
Granted: 1995-05-30
Abstract: The present invention relates to a method of producing a protective gas consisting of 0.0010-0.100 percent by volume ni-trogen monoxide, 0-90 percent by volume helium, 0-5 percent by volume hydrogen, 0-50 percent by volume carbon dioxide, and the remainder argon. The invention also relates to a gas mixture for producing the productive gas. The method of producing the protective gas is characterized by dissolving carbon monoxide in condensed argon to a concentration of 0.0010-0.100 percent by volume, calculated on gas phase, vaporizing the resultant solution and mixing remaining constituents in the vaporized solution in such proportions as to obtain a protective gas of the predetermined composition. The gas mixture used for producing the protec-tive gas is characterized in that it consists of 0.0010-0.100 percent by volume nitrogen monoxide in condensed argon, calculated on gas phase, and is preferably held under an overpressure.
Patent CA-2078985-C (CA)
Inventor: MOSTE-DESHAIRS CATHERINE
IPC: C07K14/11
Filed: 1992-01-24
Granted: 2004-11-09
Abstract: The use, when preparing a vaccine composition containing a standard influenza virus vaccine, of an additive which consists of a core or core fraction of at least one influenza virus, especially a fraction containing protein M; and a vaccine composition thereby obtained. The use of said additive improves the vaccine's effectiveness.
Patent CA-2080226-C (CA)
Title: Cd4-gamma2 and cd4-igg2 chimeras
Inventor: BEAUDRY GARY A
IPC: A61K47/48
Filed: 1992-02-10
Granted: 2004-05-04
Abstract: This invention provides an expression vector encoding a CD4-gamma2 chimeric heavy chain homodimer. This invention also provides an expression vector encoding the heavy chains of a CD4-IgG2 chimeric heterotetramer. Finally, this invention provides an expression vector encoding the light chains of a CD4-IgG2 chimeric heterotetramer.
Patent CA-2081430-C (CA)
Title: Agricultural drawbar and self-locking bushing therefor
Inventor: LONG JOHN DAVID
IPC: F16C33/08
Filed: 1992-10-26
Granted: 1997-03-18
Abstract: A drawbar assembly includes a self-locking bushing which is supported from the drawbar mounting bracket by a conventional nut and bolt fastener. Each end of the bushing includes radial line projections which bite into the mounting bracket and into a washer interposed between the nut and the bushing when the nut is threaded onto the bolt.  By capturing both bushing ends, the bushing cannot rotate to loosen the nut or wear against the mounting bracket and washer.  The bushing is formed as a single component with the radial line projections by a powdered metal process and hardened to provide wear resistance.  Dissimilar metals in the bushing and the drawbar at the pivotal connection reduce wear.
Patent CA-2100853-C (CA)
Title: Fence system
Inventor: PARISIEN HARVEY EDGAR
IPC: E04H17/14
Filed: 1993-07-19
Granted: 2003-04-29
Abstract: A fence system including posts for supporting horizontal rails and infill material such as panels or wooden boards. The posts comprise spaced-apart channel members of substantially C-shaped cross-sections having channels facing inwardly. The rails extend between the channel members of the post. A connector having side edges bent to engage interned flanges of the channel members is held in place by a bolt and washer. An alternative connector in the form of a band clamps at least the upper ends of the channel member of the post together and preferably supports the rails. The lower ends of the channel members of the post are preferably set in concrete or secured to a base.
Patent CA-2113330-C (CA)
Title: Multicarrier modulation transmission system with variable delay
Inventor: CIOFFI JOHN M
IPC: H04L1/00
Filed: 1994-01-12
Granted: 1998-06-16
Abstract: A transmission system using multicarrier modulation applies FECC (forward error correcting code) coding and codeword interleaving differently to input signals from a plurality of different data channels to produce encoded data signals having different reliabilities and different coding delays. Bits of encoded data signals having relatively less delay are allocated to carriers that are subject to relatively more attenuation and/or channel noise, and hence that are allocated fewer bits for transmission in each symbol period, to reduce the effects of impulse noise. The data channels can comprise video, data, and control channels transmitted on an ADSL (asymmetric digital subscriber line) two-wire telephone line.
Patent CA-2115059-C (CA)
Inventor: PORRECA PAUL JAMES
IPC: F02P9/00
Filed: 1992-08-21
Granted: 2000-10-31
Abstract: An ignition system for hydrocarbon based fuels employing two energy sources ( 10, 16), one to create a spark, and the other to sustain the spark. The ignition system is based in pan on the principle of a strobe light circuit. The system increases ignition efficiency by increasing the power dissipated at a spark gap (14), particularly when used in conjunction with a surface gap spark plug. Maximum power transfer is achieved via impedance matching between a transformer (12) of the ignition system to the surface gap spark plug. The circuit is particularly appropriate for igniting extremely lean mixtures, highly diluted mixtures, and alternative fuels.
Patent CA-2120883-C (CA)
Title: Composite sheet material
Inventor: PILEGGI JAMES D
IPC: B61D17/04
Filed: 1994-04-08
Granted: 1998-09-29
Abstract: A gondola railway car with a structural frame of metal has panels of lightweight composite tension-bearing sheet material attached to the frame by clamps which grip the margins of the panels.  The panels thus are structural components of the car body, while also acting to contain bulk cargo such as coal.  The panels may be of aramid fiber cloth coated with a wear-resistant polymeric material, and particles of hard material may be embedded in the polymeric material to enhance resistance to mechanical erosion.
Patent CA-2125294-C (CA)
Title: Differential modulator using concurrent pulse addition and subtraction
Inventor: NANNI PETER
IPC: H03C3/09
Filed: 1993-09-27
Granted: 1995-06-20
Abstract: An apparatus (204) generates an output signal (616) having a predetermined frequency shift relative to the frequency of a reference signal in a system (200) comprising a digital phase-locked loop (206) coupled to the reference signal forgenerating the output signal (616). The apparatus comprises a pulse adder (304) coupled to the reference signal for adding pulses recurring at a first cyclical rate to the reference signal. The apparatus further comprises a pulse subtracter (302) coupled to the reference signal for concurrently subtracting pulses at a second cyclical rate from the reference signal.
Patent CA-2126174-C (CA)
Inventor: THIELEN DAVID
IPC: G06F13/12
Filed: 1994-06-17
Granted: 2003-01-21
Abstract: A method and system for interrupt-responsive execution of a communications protocol which obtains data sent by a sending computer a receiving computer via a communications interface. An interrupt handler routine is provided which includes the communications protocol. When data requested by an application executing on the receiving computer is received by the communications interface, an interrupt is sent by the communications interface to the CPU in the receiving computer. When this interrupt is received, the interrupt handler routine is immediately accessed and executed to timely execute the communications protocol. As a result, the communications protocol obtains the data from the communications interface before it can be overwritten by new data sent by the sending computer. The application program can then be executed at a later time to read the data obtained.
Patent CA-2138697-C (CA)
Inventor: OKANOUE KAZUHIRO
IPC: H03H17/00
Filed: 1994-12-21
Granted: 1999-08-17
Abstract: A maximum-likelihood sequence estimator implemented to cope with an intersymbol interference from a single symbol employs a necessary channel impulse response estimation vector of two components for a decision to estimate a maximum-likelihood sequence. A channel impulse response estimator implemented to estimate a channel impulse response in consideration of intersymbol interferences from up to two symbols outputs a channel impulse response estimation vector of three components. The three-component vector is input to a converter, where it is converted into the two-component vector to be output to the maximum-likelihood sequence estimator.
Patent CA-2143892-C (CA)
Inventor: WRAIGHT PETER D
IPC: E21B47/10
Filed: 1995-03-03
Granted: 2005-10-25
Abstract: A method of monitoring formation fractures in real-time is performed in which a fluid containing a radio-active tracer element is pumped at a high pressure down a wellbore into a formation. As the fluid creates fractures and moves through the formation gamma-rays are emitted from the radio-active tracer element in the fluid. Detector means placed at predetermined locations in the wellbore continuously detect these gamma-rays. Gamma-rays emitted from wellbore fracture fluids are distinguished from formation gamma-rays and the detected formation gamma-rays are counted. As the fracture fluid approaches the height or vertical depth of these detector means, the gamma-ray count increases. Once the gamma-ray count reaches a predetermined level, the fracture will have reached a desired location in the formation and pumping of the fracture fluid will stop.
Patent CA-2146156-C (CA)
Title: Medical stents for body lumens exhibiting peristaltic motion
Inventor: ANDERSEN ERIK
IPC: A61F2/90
Filed: 1993-10-13
Granted: 2004-11-30
Abstract: A steal (100) for reinforcement of the lumen of a peristaltic organ, and methods for forming, shaping and heat treating of such a steal. The steal (100) is formed by knitting preferably a nitinol wire into a pattern of overlapping loops selected such that from a relaxed state each row of loops may shift axially relative to and independently of the rows on either side. A steal is also shown which comprises two resilient cylindrical mesh layers (532, 534) and a semi-permeable compliant membrane (530) such as expanded polytetrafluoroethylene, sandwiched between. A method is also shown of manufacturing a delivery system for a resilient tubular device such as a steal so that the device can be inserted into the body in a substantially reduced diameter.
Patent CA-2148259-C (CA)
Inventor: NACHTRAB WILLIAM T
IPC: C22C25/00
Filed: 1994-09-06
Granted: 1998-12-08
Abstract: A light weight, high strength temary or higher-order cast beryllium-aluminum all oy, including approximately 60 to 70 weight % beryllium, one or both of from approximately 0.5 to 4 weight % silicon and from 0.2 to 4.25 weight % silver, with the balance aluminum. Beryllium strengthening elements selected from the group consisting of copper, n ickel, or cobalt may be present at from 0.1 to 0.75 weight % of the alloy to increase the alloy strength.
Patent CA-2149454-C (CA)
Inventor: THOMPSON WARREN LYNN
IPC: A01C7/06
Filed: 1995-05-16
Granted: 1997-03-18
Abstract: A rig assembly on a combination row crop cultivator and chemical applicator includes a knife or other applicator device supported in front of the cultivator sweep and behind the disk coulter blade.  The sweep helps seal the chemical in the ground in certain soil conditions to prevent chemical loss, particularly when additional closing structure is not in use.  A selectively attachable, shank-mounted closing mechanism, preferably a press wheel, may be mounted directly behind the sweep to assure a good chemical seal.  Disk coulter support straps have flanges that provide a conveniently accessed mount for the applicator device and present minimal interference to trash and soil flow.   A simple bracket connects an arm on the closing wheel mechanism to a central portion of the sweep standard.  Numerous combinations of tools and tool mounting arrangements and adjustments are facilitated by the rig construction.
Patent CA-2151450-C (CA)
Inventor: HAUSER HANS
IPC: D06F37/30
Filed: 1995-06-09
Granted: 2001-05-15
Abstract: A clutch/brake mechanism for a transmission of a washing machine which uses an upwardly moving disc brake activated by a spring clutch dependent on the direction of rotation of an associated motor to provide the agitation and the high speed spin of the washing machine.
Patent CA-2155194-C (CA)
Title: Carbon blacks
Inventor: SHIEH CHIUNG-HUEI
IPC: C09C1/50
Filed: 1994-02-23
Granted: 1999-08-31
Abstract: Carbon blacks having a CTAB of greater than, or equal to, 140 m2/g; a CDBP of greater than or equal to 115 cc/100g; a Tint value of greater than or equal to 135 %; a .DELTA.D50 of less than or equal to 50 nm; a Dmode less than or equal to 72 nm; and an Occluded Volume Index greater than or equal to 1.30 that impart superior treadwear resistance and abrasion resistance to rubber compounds. Preferably, the carbon blacks of the present invention are further characterized by having a N2SA greater than or equal to 150 m2/g, and less than 180 m2/g; and a DBP of greater than or equal to 140 cc/100g. Also disclosed are rubber compounds containing the carbon blacks which exhibit increased abrasion resistance and treadwear resistance at normally utilized loading levels. Further disclosed are rubber compounds containing the carbon blacks which exhibit increased treadwear resistance/hysteresis ratios at loading levels lower than normally utilized in the compounding of tire compounds. All of the rubber compounds may additionally include silica in order to improve traction performance.
Patent CA-2159112-C (CA)
Inventor: FULLER-PACE FRANCES VICTORIA
IPC: C12N9/16
Filed: 1994-03-28
Granted: 2007-06-19
Abstract: A method for determining the anti-microbial activity of a putative anti-microbial agent, the method comprising combining a microbially required nucleotide phosphatase, a nucleoside phosphate and the substance to be tested, and assessing the extent of degradation of the nucleoside phosphate in the presence and absence of the substance.  The method thus allows the determination of the extent of inhibition of the nucleotide phosphatase by the substance. Preferably the method determines the degree of inhibition of an RNA helicase such as DbpA, which acts selectively on prokaryotic ribosomal RNA. Suitable DbpA inhibitors are disclosed as well as genetic material encoding for an active form of DbpA.
Patent CA-2164002-C (CA)
Inventor: SIMMONS THOMAS E
IPC: B21B31/07
Filed: 1994-05-31
Granted: 1999-07-20
Abstract: In an oil film bearing assembly for a roll (2) in a rolling mill, where a flexible seal (28) is mounted on a tapered section (6) of the roll neck at a location adjacent to a sleeve (10) fixed to the roll neck and defining the journal surface, the improvement comprising an end portion of the sleeve (10) being configured to overlap and radially confine an end portion of the seal (28) to thereby resist centrifugal distorsion of the seal (28) during high speed rotation of the roll neck.
Patent CA-2164341-C (CA)
Title: Liquid dispenser for dispensing foam
Inventor: BANKS STEWART
IPC: B05B11/06
Filed: 1995-04-03
Granted: 2001-11-20
Abstract: There is disclosed a foaming de-vice for dispensing foam. The device in-cludes a collapsible liquid container (30) and a foam pump (36) attached to the con-tainer outlet. The foam pump includes two enclosures, the first being bonded in the throat of the container and the sec-ond being telescopingly received in the first. When assembled, the two enclosures define an air chamber (104) and a fluid chamber (50) each having outlets which merge by the foamer outlet. The fluid chamber (50) accepts liquid from the con-tainer (30), and when the second member is moved with respect to the first mem-ber, the fluid chamber (50) is pressurized to open an outlet valve (20), and air is si-multaneously expelled through the outlet. The liquid and air commingle as they pass through a wire, plastic or fabric mesh (84) thereby forming the foam. There is in-cluded a dispenser housing for releasably receiving the collapsible liquid container and foam pump. The dispenser includes a push button pivotally attached thereto which is coupled to the second enclosure so that as the push button is moved the pump is actuated.
Patent CA-2170262-C (CA)
Inventor: MUSSELMAN RONALD L
IPC: D21D1/22
Filed: 1994-08-23
Granted: 2003-03-18
Abstract: In an apparatus (10, 100, 300, 400) for refining a low consistency fibrous slurry, which includes a plurality of refining zones (38, 40; 188, 128; 324, 334; 411, 413) within a casing, the improvement comprises providing a unique discharge flow path from each refining zone to a respective unique discharge line (56, 58; 130, 142; 308, 310; 411, 413) out of the casing, and means (57, 59; 141, 143; 344, 346; 432. 434) for differentially adjusting the flow rate in each discharge line. In accordance with the preferred embodiment of the invention, a divider (42, 132, 340) is provided between the casing and the rotor member, thus dividing the discharge between the two refining gaps, into two separate flow streams. The first and second gaps are monitored in any conventional manner. Under operating conditions, the flow control valves are adjusted for combined flow from the refiner casing as required by the production demands. However, the relative positioning between the two valves is adjusted. until the refining gap measurements show equal gaps (within a pre-established tolerance) in the two refining zones.