baber/WOPTO huggingface dataset:
Patent CA-1194924-A (CA)
Inventor: COCKROFT JAMES B
IPC: H02P25/10
Filed: 1983-01-21
Granted: 1985-10-08
Abstract: Abstract of the Disclosure A motor speed control circuit for closed loop control of an electric motor of a household electric appliance is dis-closed herein.  The motor speed control circuit includes a coil adapted to be placed in proximity with a fan connected to an electric motor and producing a time varying signal in response to rotation thereof.  A comparator connected to the coil gener-ates a rectangular wave having a frequency proportional to the frequency of the coil signal.  Additional means are provided for converting the rectangular wave signal, a D.C. signal having an amplitude which corresponds to the frequency of the rectan-gular wave.  The D.C. signal is compared to a reference signal at an amplifier to produce an error signal which is fed through an opto-isolator to a conduction angle controlled thyrister. The thyrister is connected to the electric motor and a source of electric power to control the speed of the electric motor.
Patent CA-1190040-A (CA)
Inventor: CERAMI ANTHONY
IPC: G01N21/78
Filed: 1983-01-27
Granted: 1985-07-09
Abstract: ABSTRACT OF THE DISCLOSURE     A photosensitive composition is disclosed, which is capable of offering a visual, calibrated reaction to the presence of ultra-violet radiation.  The composition comprises a complex of a leuco dye and animal-derived serum albumin.  The prepara-tion of this complex has been found to stabilize the leuco dyes, to avoid fading after the presentation of a color reaction upon exposure.  Also, the leuco dye-serum albumin albumin complex is capable of exacting calibration, so that scientifically significant quantitative measurements of ultra violet light exposure can be made.  Moreover, the present com-position eliminates the need for the addition to the leuco dye of various activator compounds, that are chemically unstable, e.g. volatile, or present potential exposure to toxicity, in the instance where personal applications for the photosensitive composition are contemplated.     The present invention includes a method of preparing the photo-sensitive composition, including the preparation of an ultra-violet light indicator.
Patent CA-1236649-A (CA)
Inventor: CASTNER KENNETH F
IPC: C08F36/00
Filed: 1983-04-12
Granted: 1988-05-10
Abstract: ABSTRACT OF THE DISCLOSURE MOLECULAR WEIGHT CONTROL OF POLYBUTADIENE     A process for the regulation of the molecular weight of a high cis 1,4-polybutadiene prepared by polymerizing 1,3-butadiene in a solution of an aliphatic and/or cycloaliphatic solvent system employing as a catalyst system a mixture of (1) an organonickel compound, (2) an organoaluminum compound and (3)   a fluorine containing compound selected from the group consisting of hydrogen fluoride and hydrogen fluoride complexes prepared by complexing hydrogen fluoride with ketones, esters, ethers, alcohols, phenols and water, said polymerization being conducted in the presence of small amounts of alpha olefins such as ethylene and propylene.
Patent CA-1208192-A (CA)
Inventor: KAWANAMI ISAO
IPC: F16K5/06
Filed: 1983-05-03
Granted: 1986-07-22
Abstract: A BALL VALVE                   ABSTRACT OF THE DISCLOSURE   A disposable ball valve wherein the union is adhered inside the valve body of the valve housing so as to form the valve chamber for rotatably receiving the ball therein.  On the surfaces of the valve body and the union facing the ball, annular grooves of rectangular cross--sectins are formed.  Within the annular grooves, there are fitted annular seating rings made of polytetrafluoro-ethylene backed by resilient rubber rings.  Thus, the ball and the union do not disconnect from the valve housing by applied fluid pressure, and the sealing performance of the ball valve can be maintained for a long period.  In addition, contact surfaces of the valve housing and the tubular caps are formed in the shape of complementary spherical surfaces slidable to each other.         Thus, even if the pipelines are deviated from the axis of the flow passage by means of external forces, the ball valve substantially does not receive such excess forces.
Patent CA-1192562-A (CA)
Inventor: ROTHENBERG ALAN S
IPC: C07D233/54
Filed: 1983-05-17
Granted: 1985-08-27
Abstract: ABSTRACT OF THE DISCLOSURE A method  for  preparing  2-alkenylimidazoles  from readily available 2-alkylimidazoles or 2-alkylimidazolines by dehydrogenating the 2-alkylimidazole or 2-alkylimida-zoline in the presence of a suitable dehydrogenation cat-alyst. The preferred method provides 2-vinylimidazole by dehydrogenating 2-ethylimidazole or 2-ethylimidazoline. The reaction is advantageously carried out in a vapor phase in the presence of an inert carrier gas using as preferred dehydro-genation catalysts, copper chromites and catalysts compris-ing one or more of the metals molybdenum, iron, cobalt, zinc or chromium on non-reducible oxide supports such as alumina or silica.
Patent CA-1224517-A (CA)
Inventor: SOUM JACQUES
IPC: F16C27/02
Filed: 1983-05-24
Granted: 1987-07-21
Abstract: ABSTRACT OF THE DISCLOSURE        The invention provides a process for producing hydro-dynamic bearings for supporting and guiding rotary machine shafts.       The process consists in previously manufacturing a self-contained cartridge formed of thin foils fixed with respect to each other and partially overlapping so as to form an internal floating surface adapted to generate the formation of a fluid film between said surface and the shaft mounted therein ; the cartridge comprises an external peri-pheral surface of a diameter corresponding to that of the bore of the bearing shell and is inserted in this bore then secured against rotation and axial translation with respect thereto, more especially by abutment means situated in the edge region.
Patent CA-1216991-A (CA)
Inventor: BUSCALL RICHARD
IPC: C08L33/00
Filed: 1983-06-22
Granted: 1987-01-20
Abstract: ABSTRACT          "Particulate Dispersions"    A dispersion in an aqueous medium of an organic particulate solid is provided substantially all the particles of which have a size less than 100 microns.  The dispersion contains a polymeric composition which is soluble in the aqueous medium and which comprises a copolymer of at least one hydrophobic monomer and at least one hydrophilic monomer.          The soluble polymeric composition provides improved stabilization of, for example, polymer latices in emulsion paints and of organic dyestuffs under high temperature conditions.
Patent CA-1209701-A (CA)
Inventor: PFEIFFER J DAVID
IPC: G10L13/047
Filed: 1983-06-23
Granted: 1986-08-12
Abstract: ABSTRACT OF THE DISCLOSURE     A speech synthesizer is disclosed in which instan-taneous conversational speech can be produced by an operator.          The speech synthesizer comprises a two dimensional input device, such as a joystick or a playing tablet, for producing vowel-like sounds, a plurality of selection keys for produc-ing consonant-like sounds and a third control for varying the pitch or inflection of the produced signal.  The elec-tronic circuit for producing the voicing wave forms can be either analog or digital.
Patent CA-1169865-A (CA)
Inventor: GIORDANO CLAUDIO
IPC: C07D317/14
Filed: 1983-07-14
Granted: 1984-06-26
Abstract: ABSTRACT OF THE DISCLOSURE          This invention relates to new haloketals of the general formula (Ia)                         (Ia) wherein R is selected from the group comprising 4-isobutyl-phenyl-, 4-propionamido-phenyl, 4-phthalimido-phenyl-2-fluoro-4-diphenylyl-, 2-thienyl, 4-diphenylyl, 3-chloro-4-cyclohexyl-phenyl, 3-phenoxy-phenyl, 4-bromo-phenyl, and 4-(1-oxo-2-isoindolinyl)-phenyl;        R''' is selected from the group comprising hydrogen and methyl radical;        R' is an alkyl radical having from 1 to 6 carbon atoms;        R" is an alkyl group having from 1 to 6 carbon atoms;        R' and R", together are an alkylene radical having from 2 to 6 carbon atoms which, together with the   group, forms a hetero-cyclic ring;        X is a halogen atom; and a process for their preparation.  The process comprises reacting a halo-ketone  of the general formula R-CO-CHX-R''' with the alcohols and diols of R'OH, R"OH and HO-A-OH and A is an alkylene radical of C2-6.   These compounds are useful intermediates used for the preparation of esters of alkanoic acids which are in turn useful as intermediates in the produc-tion of drugs such as anti-inflammatories, analgesics and antipyretics.
Patent CA-1218619-A (CA)
Title: Catalytic cracking process using powdered zeolite  catalysts
Inventor: CHEN NAI Y
IPC: C10G11/05
Filed: 1983-09-27
Granted: 1987-03-03
Abstract: CATALYTIC CRACKING PROCESS USING POWDERED ZEOLITE CATALYSTS            ABSTRACT          A catalytic cracking process in which the feed is cracked in the presence of a small particle size zeolite catalyst, which may preliminarily be dispersed in the feed, mixed with a hot inert solid which furnishes the necessary reaction heat.  This decouples the circulation rate of the solids and the temperature of the solids from the catalytic activity of the zeolite catalyst and permits the zeolite, which may be used in very small quantity, to be discarded without having to be regenerated.
Patent CA-1242338-A (CA)
Title: Moyeu de roue a frein et reducteur integres
Inventor: ROGIER LEONCE
IPC: F16D55/36
Filed: 1983-11-02
Granted: 1988-09-27
Abstract: Moyeu de roue du genre comportant, dans un corps creux fermé par un couvercle, un réducteur, à porte-satellites, et un frein, à disque de frein susceptible d'être soumis à un serrage axial contrebuté par le couvercle. Le porte-satellites forme une pièce distincte à la fois du corps creux et du couvercle et, étant en appui axial sur une butée elle-même calée axialement sur ledit corps creux, il ferme ainsi lui-même transversalement celle-ci immédiatement en-deçà dudit couvercle, en sorte que,pour le desserrage manuel du frein, il suffit d'agir sur le couvercle. Application, notamment, à l'équipement de véhicules industriels, d'engins agricoles, d'engins de travaux publics ou d'engins de manutention.
Patent CA-1183615-A (CA)
Inventor: SKLAR JOSEPH
IPC: A47C27/20
Filed: 1983-11-16
Granted: 1985-03-05
Abstract: ABSTRACT     A seat cushion which comprises a main body portion and a pair of facing panels is formed with a plurality of spring mounting passages opening through the main body portion.  The spring mounting passages include perimeter passages located about the perimeter of the seating area and inboard passages located inwardly of the perimeter passages.  Perimeter com-pression springs are located in the perimeter passages and inboard compression springs are located in the inboard passages.          Resiliently flexible retainer wires extend about the perimeter of the seating area and are secured and held fast with respect to the perimeter springs while being free of attachment to the inboard springs.
Patent CA-1224650-A (CA)
Inventor: DE CAROLIS JOSEPH P
IPC: B25B13/46
Filed: 1983-11-28
Granted: 1987-07-28
Abstract: ABSTRACT OF THE DISCLOSURE           A rotary hand tool of the ratchet type and method for assembling same comprises an elongated wide mouth ratchet housing provided with a shaft rotatably mounted therein having a ratchet mechanism operatively associated therewith and a bushing coaxially mounted on the shaft, which bushing interlocks with the housing for securing the shaft and ratchet mechanism within the housing and aligning and supporting the shaft.
Patent CA-1205368-A (CA)
Inventor: GLUCK DAVID G
IPC: B32B37/00
Filed: 1983-12-16
Granted: 1986-06-03
Abstract: STRUCTURAL LAMINATE AND METHOD FOR             MAKING SAME  ABSTRACT           A process for producing a structural laminate comprising  the steps  of providing a composite  article comprising a facing sheet adhered to a thin, substantially incompressible yet expansible mat of long, layered glass fibers,  applying  a  foam-forming  mixture  to  the  glass fibers, positioning a second composite article or a facing sheet over the applied foam-forming mixture, passing the facing sheets having the mat and the foam-forming mixture therebetween through the nip of two rotating rolls,  and foaming the foam-forming mixture.  The structural laminate is useful in thermal insulating applications.
Patent CA-1215811-A (CA)
Inventor: MUNN JOHN B
IPC: E04C2/20
Filed: 1984-01-03
Granted: 1986-12-30
Abstract: A PANEL ASSEMBLY AND A METHOD OF INSTALLING SAME                 ABSTRACT     A panel assembly for use in constructing flooring walls or ceiling has two panels (1,2) each having a planar surface (3,4) on one side and on its opposite side (5,6) a plurality of bosses (7,8) projecting from the panel. The panels (1,2) are interconnected by abuttment of the bosses (7) of one panel (1) with the bosses (8) of the other panel (2) and a locking member (12,18) is associated with some of the abutting bosses to thereby prevent lateral movement of panel(1) relative to the other panel(2). The locking members(18) may be tubular and/or comprise locking pins (12) arranged to pass through bores in some abutting bosses.        When used as a flooring the panel assembly is installed on a concrete base having a substantially flat surface and bedded on an adhesive compound.  A number of panel assemblies will be required to construct the flooring wall or ceiling, but once constructed a number of individual panels may be removed to readily allow the installation of mains services.
Patent CA-1216730-A (CA)
Inventor: WARD GEORGE C
IPC: B22D11/06
Filed: 1984-01-04
Granted: 1987-01-20
Abstract: ABSTRACT   Disclosed  is  a  method  and  apparatus  for  remote, individual control of separate coolant flow through control valves to spray nozzles lying along and about a continuous metal casting path to permit a nearly infinite variation in cooling patterns, which may be adjusted along and/or about the  metal  casting  path  as  the  casting  metal  advances. Remote individual spray nozzle coolant flow in continuous casting  is  safer  and  enables  production  of  an  improved product.
Patent CA-1238031-A (CA)
Inventor: BRAGIN BORIS F
IPC: F16K27/04
Filed: 1984-01-18
Granted: 1988-06-14
Abstract: VALVE HOUSING Abstract of the Disclosure A valve housing has butt pipes for connection  to a pipeline for defining therewith a passage for a flow of a fluid being conveyed, preferably of a slurry. A plura-lity of ribs are provided along the passage on the lower portion of the wall thereof, each rib extending transve-rsely of the passage. Each rib is of a tear-shaped confi-guration in its section taken along the longitudinal cen-terline of the passage a the enlarged portion of the rib facing toward the incoming flow of a fluid being conveyed.
Patent CA-1214382-A (CA)
Inventor: BLOMQVIST SEPPO I
IPC: C01B7/19
Filed: 1984-01-23
Granted: 1986-11-25
Abstract: METHOD FOR REGENERATING PICKLING ACIDS            Abstract of Disclosure The residual acid mixture containing metals which has been produced in the steel pickling process is regenerated to become new HF/HNO3 pickling acid by applying H2SO4 addition and evaporation.  The metal sulphate salt produced in evaporation is converted into scarcely soluble iron jarosite Na[Fe3(SO4)2(OH)6] and chrome and nickel hydroxide, the last mentioned metal hydroxide being obtained as a separately utilizable precipitate.            The metal sulphate salt is separated from 60% H2SO4 solution, wherein the main part of the salt is also crystallized.  For promoting the crystallization, part of the salt is crystallized in a side line where 80%          H2SO4 concentration is used.  The acid slurry produced is carried back to the crystallizing stage in the main line.
Patent CA-1202382-A (CA)
Inventor: WITTMAN JOHN P
IPC: H04B3/03
Filed: 1984-03-14
Granted: 1986-03-25
Abstract: HYBRID CIRCUIT            Abstract of the Disclosure A hybrid circuit having low return loss and low transhybrid loss is disclosed.  An operational amplifier is employed in a feedback configuration. The receive port of the hybrid circuit is applied to the non-inverting input of the amplifier while the center-tap of the secondary winding of the hybrid transformer is applied to the inverting input of the amplifier.  Most noticeable is the omission of an impedance setting resistor at the output of the operational amplifier.  The circuitry connected to the transmit port and the two-wire bidirectional port of the hybrid circuit are of conventional design.     -i-
Patent CA-1208321-A (CA)
Inventor: MAIJERS ANDRIES C
IPC: H05K5/00
Filed: 1984-03-21
Granted: 1986-07-22
Abstract: ABSTRACT:            Electrical component comprising an electric circuit ele-ment having leads which are centred with respect to the walls of a housing.           An electrical component comprising an electric circuit element having two mutually parallel external leads which are directed parallel to the end faces of the circuit element which element is secured in a housing which is open on one side by means of an electrically insulating material, having the particularity that two pairs of resilient lugs extend from side walls of the housing. The lugs of each respective pair converge in-wardly and clamp a respective external lead of the cir-cuit element in such a position that the leads are centred with respect to the walls of the housing.
Patent CA-1235749-A (CA)
Inventor: COHEN RICHARD L
IPC: G01N27/04
Filed: 1984-05-10
Granted: 1988-04-26
Abstract: ABSTRACT         A large number of applications exists for measuring the resistivity or other properties of ferrous and nonferrous metals, including matching alloys to ensure weld compatibility and measuring weld size to estimate weld strength.  In the present invention, a DC current-reversal technique allows for accurate electrical measurement with a 4-point probe, alleviating problems due to surface potentials, thermal effects, and eddy currents that previously rendered such measurements inaccurate. Estimates of thermal conductivity, flaw size and location, among others, can also be obtained.
Patent CA-1221234-A (CA)
Inventor: VAN LAAR JACOBUS
IPC: F27B1/21
Filed: 1984-05-25
Granted: 1987-05-05
Abstract: TAPHOLE CONSTRUCTION OF A SHAFT FURNACE     ABSTRACT OF THE DISCLOSURE     In a shaft furnace having a metal shell, a refractory furnace lining inside the shell and a taphole construction comprising a drilled taphole extending through a plug located in an aperture in the shell and a taphole brick structure forming part of said furnace lining, the taphole brick structure at least partly consists of at least one taphole brick of high thermal conductivity material selected from the group comprising graphite, semi-graphite and material of equivalent heat conductivity, there further being screening means comprising material of substantially lower heat conductivity coefficient than graphite and semi-graphite located between said taphole brick and said furnace shell.
Patent CA-1247885-A (CA)
Inventor: POZSGAY DEZSOE A
IPC: B21B23/00
Filed: 1984-05-25
Granted: 1989-01-03
Abstract: SEAMLESS TUBE MILL                    ABSTRACT OF THE DISCLOSURE The disclosure is directed to a process and a mill installation for the production of seamless tubes of high quality, in production mills having relatively modest production requirements. The mill installation comprises a cross roll piercing mill for piercing and initially elongating a solid cylindrical billet. Preferably, but not in all cases, the cross roll piercer is followed by a second cross roll "piercer" which functions purely as an elongator, and which functions to substantially elongate the pierced billet, typically in conjunction with an increase in O.D. and reduction in wall thickness. As a key feature, the pierced billet, previously processed by either one or two cross roll piercer/elongators, is thereafter further elongated by means of a Diescher-type elongator, and most particularly a novel form of such Diescher type elongator incorporating a restrained mandrel bar feature. From the Diescher mill, the highly elongated tube is processed on a sizing mill for finish sizing and typically some additional elongation. Although the Diescher type elongator is a well known mill in a general sense, its use in the context of this invention is unique, as is its use in conjunction with a restrained mandrel. The new mill complex makes it economically feasible to install a seamless tube mill for the production of high quality tubing at production levels as low as 200,000 - 250,000 tons per year.
Patent CA-1218662-A (CA)
Inventor: BAYER ARTHUR C
IPC: A01N43/50
Filed: 1984-05-31
Granted: 1987-03-03
Abstract: Abstract of the Invention A compound having the structural formula   wherein R is alkyl, cycloalkyl, cycloalkylalkyl, alkenyl, benzyl or substituted benzyl.  These compounds are useful as herbicides.
Patent CA-1216305-A (CA)
Title: Metaaminophenols substitues, leur procede de  preparation, compositions tinctoriales pour cheveux  les contenant et procede de teinture de cheveux  correspondant
Inventor: BUGAUT ANDREE
IPC: A61K8/35
Filed: 1984-06-12
Granted: 1987-01-06
Abstract: L'invention concerne des composés de formule générale (I): <IMG> (I) dans laquelle Z représente un radical hydrocarboné mono ou polyhydroxylé, contenant au plus 6 atomes de carbone ou un radical aminoalkyle de formule <IMG> n étant un entier compris entre 1 et 6 (bornes incluses), R1 et R2 étant identiques ou différents et représentant un atome d'hydrogène ou un radical alkyle, hydroxyalkyle, acyle contenant au plus 4 atomes de carbone, et dans laquelle R représente un atome d'hydrogène, un radical alkyle, un radical mono ou polyhydroxyalkyle, monocarbamylalkyle, dicarbamylalkyle, aminoalkyle, acyle, carbalcoxy, carbamyle ou monoalkylcarbamyle, où les radicaux alkyles susmentionnés contiennent au plus 6 atomes de carbone, avec la condition que, lorsque R représente un atome d'hydrogène, Z ne puisse représenter -CH2CH2OH. L'invention concerne également un procédé de teinture de cheveux correspondant à l'utilisation de compositions tinctoriales contenant au moins un des nouveaux composés chimiques sus-mentionnés et un procédé de préparation de ces composés de formule (I). Les composés de 1'invention sont notamment utilisables comme coupleurs dans les teintures de cheveux pour donner des colorations puissantes, stables à la lumière et ayant une bonne résistance aux intempéries et aux lavages.
Patent CA-1239900-A (CA)
Inventor: SHAFFER JESSE S
IPC: C25F3/04
Filed: 1984-06-28
Granted: 1988-08-02
Abstract: ABSTRACT:                 Aluminum foil exhibiting a good combination of capacitance and mechanical strength is produced by an etching procedure that includes the steps of AC pre-etching aluminium foil in an acid bath containing hydrochloric acid and then, without removing the hydrochloric acid from the foil, etching the foil with a high density DC while the foil is immersed in an aqueous solution of sodium chloride and sodium sulfate and either sodium sulfate or boric acid.
Patent CA-1207844-A (CA)
Title: Unite de soudage electrique par resistance du type  ciseaux
Inventor: HUMBLOT BERNARD
IPC: B23K11/36
Filed: 1984-07-09
Granted: 1986-07-15
Abstract: Unité de soudage électrique par résistance du type ciseaux, comprenant, un transformateur dont l'enroulement primaire est destiné à être relié à une source de courant alternatif convenable, un circuit secondaire d'une seule spire, constitué par un barreau en forme de U présentant deux branches et monté mobile dans le transformateur les extrémités libres desdites branches étant destinées à être reliées à des électrodes supportées par des bras articulées un un point intermédiaire de leur longueur sur un axe commun isolé électriquement. Les extrémités des bras opposées aux électrodes sont reliées à un vérin pour commander l'écartement des électrodes pour la mise en place des pièces à souder, et le rapprochement de celles-ci pour souder les pièces. Chaque bras est solidaire d'un contact circulaire monté sur l'axe d'articulation desdits bras, tandis que les extrémités libres des branches du circuit secondaire comportent chacune un patin de contact présentant une surface concave destinée à coopérer avec un segment de la circonférence du contact circulaire correspondant. Des éléments prévus pour presser lesdits patins contre lesdits contacts circulaires.