baber/WOPTO huggingface dataset:
Patent CA-2029084-A1 (CA)
Title: Process for preparing 1,2,3,4-butanetetracarboxylic acid
Inventor: CASANOVA EDUARDO A
IPC: C25B3/29
Filed: 1990-10-31
Abstract: Butanetetracarboxylic acid with acceptably low levels of color-causing contaminants, suitable for permanent press agent use, is prepared in high conver-sion and yield from tetraalkyl butanetetracarboxylates by a series of steps including purification of precursor material, hydrolysis with high concentration of acid catalyst, and oxidative purification of product.
Patent CA-2030980-A1 (CA)
Title: Disjoncteur a haute tension a varistances
IPC: H01C7/12
Filed: 1990-11-28
Abstract: PRECIS DE LA DIVULGATION:         Disjoncteur à haute tension comprenant au moins une chambre de coupure et, en parallèle sur cette chambre de coupure, d'une part une varistance en série avec un inter-rupteur et, d'autre part un condensateur de répartition. Une résistance purement ohmique, de valeur comprise entre 30 et 300 ohms, est insérée en série avec ladite varistance. L'invention trouve une application notamment dans le domaine disjoncteurs de réactance.
Patent CA-2031948-A1 (CA)
Inventor: LISTON SERGAY D
IPC: B66F9/07
Filed: 1990-12-11
Abstract: ABSTRACT     A mast to base connection for a storage and retrieval machine (10) which incorporates a pin connection between the mast (22) and the base (12). The base of the machine is formed as a plurality of elongated plates (32) standing on edge with upwardly extending lugs (50) formed integrally with the plates. The mast has similar lugs (60, 61) formed at its lower end which interleave with the lugs on the base.  The mast and base are factory prealigned prior to shipment and line bored to receive connecting pins (64) which can be precisely matched to each bore.  The invention includes a method by which the mast is assembled to the base at a job site by laying the mast down on the base and inserting one of the connecting pins into the lugs, and then tilting the mast about the pin until the remaining lugs are aligned for insertion of a second pin.
Patent CA-2033912-A1 (CA)
IPC: A61M5/42
Filed: 1991-01-10
Abstract: A guide, and methods for its manufacture and use, for use with a medical instrument whereby the instrument must contact a patient's tissue at a particular location.  Given the specific patient's tissue geometry, the general medical procedure and the specific practitioner's requests, if any, a nonadjustable guide is specifically manufactured such that one or more locations of the invention attaches to and/or abuts against a portion of patient tissue correctly orienting the device with respect to the patient's tissue geometry for purposes of performing the given medical task.  The remaining geometric features of the device are dictated by the task for which it is designed and other characteristics of the tissue.
Patent CA-2036109-A1 (CA)
Title: Technique for soilless cultures with materials originating from used substrates
Inventor: ROBERT MARIE-AGNES
IPC: A01G31/00
Filed: 1991-02-11
Abstract: The invention relates to a soil-less culture technique on a substrate based on mineral fibres. According to the invention, the substrate used is composed at least partly of particles, or spheres, of mineral wool which originate from used culture substrates which have previously been disinfected and comminuted. The substrates according to the invention are of great interest in the field of tunnel culture. Their water availability is high when compared with substrates customarily used for this purpose, as shown by the retention curves. <IMAGE>
Patent CA-2040252-A1 (CA)
Inventor: WILBER JAMES A
IPC: H04N3/23
Filed: 1991-04-11
Abstract: ABSTRACT A parabolic voltage generating circuit includes an arrangement for generating a sawtooth vertical deflection current that flows in a vertical deflection winding, in a DC blocking capacitor and in a deflection current sampling resistor. An emitter electrode of a transistor is coupled between the deflection winding and the capacitor. A base electrode of the transistor is coupled between the capacitor and the resistance. A collector current of the transistor varies in a vertical rate parabolic manner and has a DC average value that is determined by a DC average value of a voltage that is developed in the capacitor. The collector current is applied to an East-West raster distortion correction circuit for modulating an amplitude of a horizontal deflection current.
Patent CA-2040756-A1 (CA)
Title: Long range bidirectional optical fiber communication link
IPC: H04B10/24
Filed: 1991-04-18
Abstract: ABSTRACT    A long-range optical fiber communication link overcoming certain constraints on signal transmission range imposed by fiber-induced loss is disclosed herein. A first embodiment of the communication link (10) of the present invention includes an optical fiber (16) having a first and a second end wherein the attenuation of optical energy  passing therethrough at wavelengths included within a transmission window is substantially minimized. The inventive link (10)  further includes a first arrangement (22) and  (36) for launching a first optical carrier of a first wavelength onto the first end of the fiber (16).  Provision is made within the launching arrangement (22) and  (36) for  impressing a first modulating signal spanning a first frequency spectrum upon the first carrier.  The first embodiment also includes a second arrangement (26)  and   (37)  for launching a second optical carrier of a second wavelength onto the second end of the fiber, wherein the second wavelength is included within the transmission window. The second launching arrangement (26) and  (37) is further disposed to impress upon the second carrier a second modulating signal spanning a second frequency spectrum segregated from the first spectrum.  A first receiver (64) of a first bandwidth encompassing the first frequency spectrum is coupled to the second end of the fiber (16). The first receiver (64) is operative to extract the first modulating signal from the first optical carrier.  Similarly, a second receiver (58) having a second bandwidth encompassing the second frequency spectrum is coupled to the first end of the fiber (16). The second receiver (58) is disposed to extract the second modulating signal from the second optical carrier.
Patent CA-2041686-A1 (CA)
Inventor: JOUSTRA ANNIE H
IPC: C10G3/00
Filed: 1991-05-02
Abstract: A process for the preparation of an alumina-based extrudate suitable for use in the manufacture of a catalyst, comprises the steps of: i) preparing an extrudable mixture comprising an alumina precursor, a cobalt, iron or nickel source and a solvent; ii) extruding the mixture: and iii) drying the so-formed extrudate.      The extrudable mixture may optionally comprise a promoter source. Alternatively, a promoter source may be deposited on the resulting extrudate. A catalyst is prepared by calcination of the resulting extrudate, which catalyst is useful in the preparation of hydrocarbons from methanol or a mixture of carbon monoxide and hydrogen.
Patent CA-2042790-A1 (CA)
Title: Method for collecting data by a manufacturing process manager from a plurality of programmable logic controllers
Inventor: FAETT JOHN H III
IPC: G05B19/418
Filed: 1991-05-16
Abstract: A data collection method is provided for use on a computer system including a host processor which is coupled to a plurality of programmable logic controllers (PLCs) via a communications bus. Each PLC is coupled to a respective controlled machine to gather Boolean alarm point information from several alarm points associated with that machine. The alarm point information from all the controlled machines is stored in a random access memories (RAM) in a respective PLC. The alarm points are grouped in memory such that a predetermined number of alarm points are stored in a trigger point register in the RAM. The host scans the trigger point registers of all the PLCs to determine if the value of any trigger point has changed since the last time such trigger point was scanned. If such a change of value in a particular trigger point is found, then the host requests that the value of each alarm point within that particular trigger point be transmitted to the host. An appropriate alarm is.then annunciated to the user. However, if the host finds no change in the value of a particular trigger point from the value of that trigger point during a prior scan, then the host does not request the values of the individual alarm points associated with that trigger point.
Patent CA-2043119-A1 (CA)
Title: Scrapper for an axial seal in a rotary combustor
Inventor: MCILVAINE SCOTT E
IPC: F23J1/06
Filed: 1991-05-23
Abstract: 55,980 ABSTRACT OF THE DISCLOSURE A scraper for a axial seal on a rotary combustor of  a  municipal  solid  waste  incinerator  comprising  a plurality of short scraper blades having a tapered leading cutting  edge  attached  to  alternating radially disposed seal support  bars attached  to combustor  tubes to remove aluminum and other built up material from axial seal shoes to extend the effective life of the axial seals.
Patent CA-2043511-A1 (CA)
Title: Grounding stud assembly
Inventor: PICKERING RICHARD W
IPC: H01R4/66
Filed: 1991-05-29
Abstract: 56, 916 ABSTRACT OF THE DISCLOSURE The   grounding   stud  assembly  for  grounding electrical equipment comprises a grounding stud having one end for  connection to  a grounding  clamp and an opposite end for connection to a bus system at either a  bus splice joint or  cable termination.   A cover is positioned over the grounding  clamp receiving  end and  over an insulated elongated portion of the grounding stud for insulating the grounding stud to prevent  inadvertent discharge  into the environment.    The  cover  comprises  an annular ring for engagement with an annular retaining collar  positioned on the elongated  portion for securing together the cover and grounding stud.  The cover includes an eyelet  for facili-tating removal of the cover from a save working distance. Due  to  an  overlap  of  the  insulating  material of the elongated portion of the grounding stud and of  the cover, the grounding  stud assembly  provides an extension of the creep or strike distance between adjacent grounding studs, thereby  enabling  the  grounding  stud assembly to comply with the applicable standards.
Patent CA-2043927-A1 (CA)
Title: Self-locking load structure for static ram
Inventor: KERTIS ROBERT A
IPC: G11C7/12
Filed: 1991-06-05
Abstract: SELF-LOCKING LOAD STRUCTURE FOR STATIC RAM           ABSTRACT OF THE DISCLOSURE           A self-locking load-structure for Random Access Memories is disclosed.  The load structure remains coupled to the memory cell during read operations but automatically decouples from the memory during write operations.  No separate decoded WRITE command must be sent to the load structure to couple and decouple the structure from the memory cell.
Patent CA-2046027-A1 (CA)
Title: Easily assembled barbecue grill with heat distribution plate
Inventor: RAYMER DOYLE
IPC: A47J37/07
Filed: 1991-07-02
Abstract: ABSTRACT           The heat distribution plate provides controlled flare-up through a system of drop-in distribution plates having holes or slots to allow dripping fats to be ignited.   Good heat uniformity  across  the  entire  grill  is  afforded,  and  the controlled flare-up provided by the holes are slots gives the food a barbecued rather than baked flavor.   The distribution plates are held in position in the containment casting by engaging flanges on the casting.  The flanges are arranged to minimize the air gap between adjacent edges of the plates.
Patent CA-2046515-A1 (CA)
Inventor: SHIMOTSUMA SAKAE
IPC: C08K5/00
Filed: 1991-07-09
Abstract: FLAME RETARDANT POLYESTER RESIN COMPOSITION     ABSTRACT OF THE DISCLOSURE    A flame retardant polyester resin composition comprising:          (A)  30 to 99.5% by weight of a polybutylene-naphthalene dicarboxylate;          (B)  0.5 to 25% by weight of at least one flame retardant selected from the group consisting of brominated bisphenol A type polycarbonate flame retardants, brominated epoxy flame retardants and brominated polystyrene flame retardants; brominated diphenyl ether flame retardants, and brominated imide flame retardants;          (C)  0 to 15% by weight of at least one flame retardant aid selected from the group consisting of Sb2O3 , Sb2O5-nH2O (n = 0 - 4) and xNa2O.Sb2O5.yH2O (x = 0 - 1, y = O - 4); and (D)  0 to 50% by weight of an inorganic filler.
Patent CA-2049309-A1 (CA)
Inventor: SCHUNCK STEPHAN
IPC: C03C17/32
Filed: 1990-04-03
Abstract: Abstract Liquid,  radiation-curable coating composition for the coating of glass surfaces The  present  invention  relates  to  a  liquid, radiation-curable coating composition for the coating of glass surfaces which comprises A) 56 to 89% by weight of at least one diethylenically unsaturated polyurethane optionally containing urea groups, B) 3 to 30% by weight of at least one ethylenically unsaturated monomer, C) 0.5 to 8% by weight of at least one photoinitiator and D) 0.05 to 5% by weight of an alkoxysilane, the sum total of the components A to D being 100% by weight in each case. The coating composition uses 1.)  one  or  more  ethylenically  unsaturated  monomers containing carboxyl groups, optionally together with other ethylenically unsaturated monomers  as  the component B and 2.)  an alkoxysilane containing epoxide groups as the component D.        These coating compositions are employed for the coating of glass surfaces, in particular of optical glass fibers, and are distinguished by good adhesion even under humid conditions.
Patent CA-2050909-A1 (CA)
Title: High quality plotting technique for raster printing devices
Inventor: WARP RICK A
IPC: G06K15/10
Filed: 1990-02-26
Abstract: A method and apparatus are disclosed for preparing and printing pen-stroke image information on a raster-type output device. The image is first vectorized, then given one of a number of slope classifications. For vertical vectors (210) and vectors within a predetermined angle of the vertical, only every n'th dot (214) on the vector is printed. For vectors in the next slope class closer to the horizontal (220), every (n/2)'th dot (224) is printed. For vectors in the next slope class closer to the horizontal (230), dots nk, nk + m2, and nk + m1 (234) are printed, where k is any integer, m2 is n/4, and m1 is n/2. For dots in the next slope class closer to the horizontal (240), every (n/4)'th dot (244) is printed. A novel vector endpoint modification scheme, novel redundant dot removal schemes, and a novel adaptive print speed control are also disclosed.
Patent CA-2055609-A1 (CA)
Inventor: BATEMAN ROBERT H
IPC: G21K1/087
Filed: 1990-06-01
Abstract: PCT No. PCT/GB90/00845 Sec. 371 Date Dec. 2, 1991 Sec. 102(e) Date Dec. 2, 1991 PCT Filed Jun. 1, 1990 PCT Pub. No. WO90/15434 PCT Pub. Date Dec. 13, 1990.An electrostatic analyzer (1) for dispersing a beam of charged particles (10) according to their energy comprises two groups (2, 3) of spaced-apart linear electrodes (4, 8, 9, 20) respectively disposed above and below the charged particle beam. The potentials of the electrodes (4, 8, 9, 20) in each group progressively increase from one to the next, thereby providing an electrostatic field in a central plane (7) between the groups which is capable of deflecting the charged particles along different curved trajectories (11, 12) according to their energies. Various mass spectrometers incorporating such an analyzer are also disclosed.
Patent CA-2056539-A1 (CA)
Title: Feedback control system for a high-efficiency class-d power amplifier circuit
Inventor: EL-HAMAMSY SAYED-AMR A
IPC: H05B41/28
Filed: 1991-11-28
Abstract: RD-20,720 FEEDBACK CONTROL SYSTEM FOR A HIGH-EFFICIENCY CLASS-D POWER AMPLIFIER                   CIRCUIT                       Abstract A closed-loop control system for a Class-D power amplifier circuit, having a variable output resonant circuit impedance, maintains high-efficiency operation by using the phase angle between the resonant load voltage and current to control tuning of the resonant circuit.  The resonant load circuit voltage and current are supplied to a phase detector for detecting the phase angle therebetween and for generating a voltage proportional thereto.  The output voltage from the phase detector is compared to a reference voltage by an error amplifier.  The resulting error voltage is employed as the input signal to control circuitry for tuning the output resonant circuit.  Such a control system is suitable for maintaining high-efficiency operation of an electrodeless high intensity discharge lamp system.
Patent CA-2058380-A1 (CA)
Title: Reference voltage measuring bridge for a device for monitoring and measuring the insulation of a dc voltage electrical mains system
Inventor: PELLEGRIN CHRISTIAN
IPC: G01R15/06
Filed: 1991-11-23
Abstract: ABSTRACT            REFERENCE VOLTAGE MEASURING BRIDGE FOR A DEVICE FOR MONITORING AND MEASURING THE INSULATION OF A DC VOLTAGE ELECTRICAL MAINS SYSTEM            An insulation monitor (5) comprises a measuring bridge (8) of the reference AC voltage (Vd) of low frequency (4 to 10 Hertz) input to a DC mains system (1).            The bridge is a mixed bridge (8), comprising a resistive bridge (9) with a high total resistance (R'1 + R'2 = 100 Megaohms) and a very low dividing ratio (R'2/R'1 = 1/1000), and a capacitive bridge (10) with a low impedance with respect to that of the lower resistance (R'2) of the resistive bridge (9).            Refer to figure 2.
Patent CA-2058746-A1 (CA)
Title: Spinal fixator reduction frame
Inventor: KRAG MARTIN H
IPC: A61B17/88
Filed: 1992-01-03
Abstract: SPINAL FIXATOR REDUCTION FRAME                   ABSTRACT OF THE INVENTION          A reduction frame according to the present invention is secured to shaft handles extending from the pedicle screws of a Vermont Spinal Fixator type implant. Shaft clamps secure two T-handles of the reduction frame to the shaft handles.  A lower-rod assembly joins the two opposite T-frames by means of lower-rod clamps.  The shaft clamps are provided with four degrees of freedom. The joint between the lower-rod assembly and T-handle is provided with five degrees of freedom.  The lower-rod assembly and the T-handle are provided with power screw threads to allow for precise translational control.  The shaft clamps and lower-rod clamps are provided with taper fit joints to allow for infinite rotational adjustment and fixture.  An upper-rod assembly is also provided on the T-handles to produce rotation of the T-handles by providing means for changing the distance between the upper ends of the T-handles.  Finger grips are provided on the upper-rod assembly to allow the surgeon to easily use one hand to either apply or monitor the force acting along the upper-rod.
Patent CA-2059248-A1 (CA)
Title: Check protector with means for printing amount in bands of different colors
Inventor: WOCHINSKI RONALD F
IPC: B41J2/23
Filed: 1992-01-13
Abstract: Abstract of the Disclosure The check protector comprises a print head with a plurality of parallel pins in a vertical line perpendicular to the direction of movement of the head.  The ribbon in the check protector has at least two bands, one band being associated with half the print wires and the other band being associated with the rest of the print wires.  In this manner, the amount on a check is imprinted in alternating bands of color to make alteration difficult.
Patent CA-2060010-A1 (CA)
Title: Method and apparatus for securing a pile of newspapers or magazines or other materials
Inventor: TETRAULT GREGORY J
IPC: B65B67/00
Filed: 1992-01-28
Abstract: METHOD AND APPARATUS FOR SECURING A FILE OF  NEWSPAPERS OR MAGAZINES OR OTHER MATERIALS               ABSTRACT OF THE DISCLOSURE    Two pieces of material such as paper stock secured about the edges.  A pull tab at about a mid-portion of each edge of the paper between pull tab at a mid-portion of each edge of the sealed members and a length of material randomly positioned between the papers or fan folded between the papers for securing a subsequent bundle of newspapers or magazines placed on top of the sheets of papers.   The opposing pull tabs are pulled out and a finite length of string or other material is fastened between the two which is used to subsequently tie or tape the bundles of newspapers or magazines.
Patent CA-2063371-A1 (CA)
Title: Selective etching of refractory metal nitrides
Inventor: JOLLY GURVINDER
IPC: H01L21/3213
Filed: 1992-03-18
Abstract: A method of selectively etching a refractory metal nitride film, with application to formation of TiN local interconnects for VLSI integrated circuits, and particularly a method of selectively etching TiN relative to a refractory metal silicide. The method comprises heating the substrate in a non-reactive gas; generating a plasma comprising chemically reactive halogen species having ion energies significantly below 100eV preferably by electron cyclotron resonance (ECR) excitation of a halocarbon containing gas; and exposing selected areas of the nitride film to the reactive halogen species. For etching TiN, preferred halocarbon containing gases are CF4 and C2F6. The substrate is preferably exposed to reactive ion species having energies less than 30eV, so that the energy of ions incident on the substrate is sufficient only to etch TiN, while the silicide is not significantly etched by the reactive species of the plasma. The etch selectivity is further enhanced during etching of the substrate at elevated temperatures in the range 100°C to 120°C.
Patent CA-2064689-A1 (CA)
Title: Stabilized protein or peptide conjugates
Inventor: NYGREN PER-AKE
IPC: A61K47/48
Filed: 1990-07-31
Abstract: A process for extending the half-life in vivo by a biologically active protein or peptide, characterized by covalently coupling said protein or peptide to a polypeptide fragment capable of binding to a serum protein, whereby when administering the result-ing protein or peptide congugate its binding to the serum protein results in extended biological activity; the use of the protein or peptide conjugate above for manufacturing a medicament which, when administered to a mammal including man, shows ex-tended half-life in vivo; and a method of therapeutic or prophylactic treatment.
Patent CA-2065184-A1 (CA)
Inventor: BRAULT RICHARD
IPC: G09B23/28
Filed: 1992-04-06
Abstract: A valve means (1 ) is disclosed for use in a teaching manikin to simulate an open and closed airway of the human throat. The valve means comprises a section with a hollow passage and two end openings. A first opening fits onto a manikin head and a second opening seats on a sealing surface. When the head is tilted back the valve means (1) lifts to open the second end to permit the flow of air.
Patent CA-2066186-A1 (CA)
Title: Combustion engines
Inventor: BONG LAU C
IPC: F02B47/02
Filed: 1990-09-28
Abstract: A method of burning fuel in a vehicle comprises mixing water with air whereby the water is atomized within the air, whereafter fuel is brought into contact with the atomized water in air, such that fuel is laid down on at least the outer surface of the atomized water droplets, and finally the fuel on the atomized water in air is combusted in the combustion chamber. The method can be used either with a petrol or diesel arrangement.