baber/WOPTO huggingface dataset:
Patent CA-1155816-A (CA)
Inventor: BROWER BOYD G
IPC: H01H37/76
Filed: 1980-03-07
Granted: 1983-10-25
Abstract: ABSTRACT OF THE DISCLOSURE     A multilamp photoflash unit having at least a pair of flashlamps, an electrical circuit arranged to fire the lamps individually and in sequence and a solid state radiation switch external of the lamps and adjacent thereto wherein the switch comprises an admixture of silver carbonate and/or silver oxide, electrically nonconductive inert particulate solids, a binder and not more than 10% by weight of sodium-containing material whereby the switch composition is desenistized by the sodium-containing material to avoid "burn-off" and/or "melt-through" of overlying insulating sheets.
Patent CA-1137164-A (CA)
Inventor: IKEDA HIRONOSUKE
IPC: H01M6/10
Filed: 1980-04-14
Granted: 1982-12-07
Abstract: Abstract:     The present application discloses a battery comprising a collector rod serving also as a winding core and having at one end thereof a non-circle shape flange, positioning means formed at the flange, a spiral electrode formed by band-shape positive and negative electrode plates with a separator layer therebetween wound upon the collector rod with one of the electrode plates electrically connected to the collector rod, a battery vessel for housing the spiral electrode and to which the other of the electrode plates being electrically connected, a lid for hermetically closing the opening of the battery vessel through insulating packing and for simultaneously forming a terminal of said one electrode plate, and conductive resilient means having one end positioned by the positioning means and the other end in contact with the lid so that the conductive resilient means is pressed by the flange and the lid to electrically connect the collector rod and the lid to each other. According to the battery of the present invention, the provision of the non-circle shape flange at one end of the collector rod serving also as a winding core, facilitates the winding operation of positive and negative electrode plates upon the collector rod, whereby the working efficiency may be improved.
Patent CA-1099129-A (CA)
Title: Sterilizable, disposable optical scattering reference  medium
Inventor: SHAW ROBERT F
IPC: A61B5/00
Filed: 1980-04-30
Granted: 1981-04-14
Abstract: STERILIZABLE, DISPOSABLE OPTICAL SCATTERING REFERENCE MEDIUM          ABSTRACT OF THE DISCLOSURE           An optical scattering reference medium is formed of a plurality of scattering particles substantially uniformly dispersed in a solid medium which is an incompressible body having a surface which is sufficiently compliant to effect intimate optical coupling with the end of a light guide, whereby to provide the interfacing properties of a liquid and the static dispersal of particles, as within a solid.  The combination provides a sterilizable disposable package for performing repeatable photometric measurements to standardize the performance of the photo-metric measuring instrument.
Patent CA-1173557-A (CA)
Inventor: OKABE YUKIO
IPC: H04N9/68
Filed: 1980-05-21
Granted: 1984-08-28
Abstract: ABSTRACT OF THE DISCLOSURE:           In a color television receiver adapted to receive a color television signal containing vertical interval reference (VIR) signals, a VIR correction circuit is provided to auto-matically control the hue and color saturation of the received broadcast signal, which signal may also be the video signal from a video tape recorder of the type in which adjacent field signals are recorded with their respective record tracks being skewed relative to each other to permit elimination of otherwise required guardbands between adjacent field tracks.  The recorded video signal is reproduced by mixing adjacent horizontal line signals to reduce crosstalk level.  A disabling circuit is provided to connect the input terminal of the VIR correction circuit to ground when the receiver is switched to the output of the video tape recorder in playback mode to prevent false VIR signals due to the mixing from affecting the reproduced colors.
Patent CA-1141612-A (CA)
Inventor: BELORE KEVIN L
IPC: F02M25/08
Filed: 1980-06-25
Granted: 1983-02-22
Abstract: ABSTRACT OF THE DISCLOSURE         An air filter for filtering combustion air for an internal combustion engine includes a housing holding a filter element and an inlet snorkel tube connected to the housing.  A "trap door" valve mechanism is located in the snorkel tube and includes a valve seat mounted on a support which circumscribes the inner wall of the snorkel tube and a valve element pivotally mounted on the support which is yieldably urged into sealing engagement with the valve seat when the engine is turned off.  The valve mechanism presents a surface sub-stantially transverse to the direction of air flow through the snorkel tube, so that combustion air communicated through the snorkel tube when the engine is running acts against the transverse surface urging the valve element to an opened position.  The valve element is "cracked open" by a solenoid when the engine is to be started in order to permit initial air flow through the air cleaner to facilitate starting.  Accordingly, when the vehicle engine is turned off, the valve element closes, thereby preventing the escape of gasoline vapors to the ambient atmosphere.  The filter element inside the air cleaner housing includes a charcoal impregnated pleated paper element in series with the conventional pleated paper filter element. The charcoal impregnated element adsorbs the vapors trapped in the housing by closure of the valve mechanism when the engine is turned off,  The charcoal impregnated paper is purged by the normal air flow through the air cleaner when the engine is started again.
Patent CA-1140328-A (CA)
Inventor: RAINES RUSSELL H
IPC: C08B15/00
Filed: 1980-06-26
Granted: 1983-02-01
Abstract: 12,534-1 AQUEOUS SOLUTIONS CONTAINING CROSSLINKED    HYDROXYETHYL CARBOXYETHYL CELLULOSE     ABSTRACT OF THE DISCLOSURE      This invention concerns crosslinkable hydroxy-ethyl carboxyethyl cellulose provided in aqueous solu-tions particularly suitable for use in oil or gas drilling, fracturing, flow diversion, completion and workover.  Crosslinking is effected through polyvalent metals as derived from polyvalent metals in the form of inorganic or organic acid salts, hydroxides and oxides.     SPECIFICATION
Patent CA-1132022-A (CA)
Title: High-efficiency recuperative  furnace
Inventor: IHLENFIELD HARRY L
IPC: F24H3/02
Filed: 1980-07-03
Granted: 1982-09-21
Abstract: ABSTRACT OF THE DISCLOSURE           The invention relates to the conversion of a substan-tially conventional gas fired furnace utilizing two or more of the clam shell-type heat exchanger cells, which is modified by converting one cell to a final stage counterflow heat exchanger for the hot gases of combustion, which modification incorporates directing the gases of combustion from the fired cells in a counterflow path through the non-fired cell by utilizing a posi-tive displacement fan and then exhausting the gases of combustion.          The modification eliminates the need for positive venting, while substantially increasing the operational efficiency of the furnace unit.  The normal flue gas temperature in this type of furnace will be about 450°F, while with the modification, the temperature will be reduced to less than about 200°F and efficiency will be increased by greater than 10 percent.
Patent CA-1154957-A (CA)
Inventor: CROS PIERRE G
IPC: B23D33/10
Filed: 1980-07-04
Granted: 1983-10-11
Abstract: S P E C I F I C A T I O N       DIMENSION INDICATOR FOR SHEET-METAL       FOLDING OR SHEARING MACHINE TOOLS               ABSTRACT OF THE DISCLOSURE             This dimension indicator for sheet-metal folding, bending or shearing machine tools comprises a measuring apparatus capable of displaying the distance from the adjustable stop member provided for positioning the workpiece to a reference plane. The device comprises means for correcting the consequence of a displacement of the reference plane, in the form of mechanical means coupled to the machine adjustment member and adapted to act directly or indirectly upon one of the component elements of coupling means or data transmission means disposed between the member controlling the stop member and the measuring apparatus, so as to actuate this apparatus.
Patent CA-1157229-A (CA)
Inventor: RAHM JOSEPH A
IPC: C22B34/12
Filed: 1980-08-08
Granted: 1983-11-22
Abstract: ABSTRACT        A process is provided for the manufacture of titanium compounds and particularly titanium dioxide wherein excess titaniferous bearing material is reacted with dilute sulfuric acid having a concentration of between about 25% and about 60% by weight at a temperature below about 140°C, and in the presence of a reducing agent which affects the reduction of ferric iron to ferrous iron. Thereafter, the titanium sulfate may be recovered or further processed to provide titanium dioxide hydrate accompanied by recycling the spent acid for reaction with the titaniferous bearing material charged to the process.  The titanium hydrate may be calcined to provide titanium dioxide.
Patent CA-1099264-A (CA)
Title: Antibacterial compounds
Inventor: LUK KONG
IPC: A61K31/335
Filed: 1980-09-11
Granted: 1981-04-14
Abstract: ABSTRACT OF THE DISCLOSURE   A novel intermediate is disclosed useful for the preparation of monic acid and derivatives as well as a process for the preparation of the derivative.  The intermediate has the formula (IV).                             (IV)
Patent CA-1132356-A (CA)
Inventor: BAKER FORREST E
IPC: A63C11/00
Filed: 1980-09-19
Granted: 1982-09-28
Abstract: ABSTRACT OF THE DISCLOSURE       A ski locking device for locking a pair of skis together in a predetermined angular relationship, the device comprising an interlockable member for attachment to one ski, another interlockable member for attachment to the other ski, and a locking mechanism carried by one of the members for locking that member to the other when the two are mated together. The interlockable members are provided with a pair of projecting portions which, when mated together, determine the angular relationship between the two locked skis.
Patent CA-1130818-A (CA)
Inventor: HOSAKA HIROKAZU
IPC: C07C37/68
Filed: 1980-10-06
Granted: 1982-08-31
Abstract: ABSTRACT OF THE DISCLOSURE               Highly decolorized, purified hydroquinone and resorcinol can be separated from each other from a mixture containing hydroquinone and resorcinol and recovered by continuously rectifying the mixture, thereby obtaining rectification bottoms containing resorcinol and hydroquinone in a ratio by weight of resorcinol to hydroquinone of 0.1 - 1 : 1 while obtaining resorcinol as a distillate, redistilling the rectification bottoms, contacting hydroquinone vapor with water vapor, condens-in the hydroquinone vapor in the presence of the water vapor, thereby recovering hydroquinone as an aqueous hydroquinone solution, and then recrystallizing the aqueous hydroquinone solution, if necessary, in the presence of an organic solvent, thereby separating hydroquinone from the aqueous solution.
Patent CA-1159568-A (CA)
Inventor: NAKAMURA YOSHIKATHU
IPC: G06V10/24
Filed: 1980-11-14
Granted: 1983-12-27
Abstract: Abstract of the Disclosure A character reading apparatus including a scanning unit manually moved along a line of characters for periodically and optically scanning the character and producing character pattern data concerning the scanned character, a memory accommodating conditional data prescribing effective character patterns and a pattern identification unit for executing identifi-cation process for a character pattern obtained from the scanning unit when the character pattern is determined to be effective, is disclosed.  The character reading apparatus further includes an optimum character detection circuit, which compares the widths of character patterns represented by effective character pattern data to detect a character pattern having the greatest width and causes identification process to be executed for the character pattern data having the largest width.
Patent CA-1144359-A (CA)
Inventor: CIAFFONE JOHN T
IPC: B26B21/14
Filed: 1980-12-31
Granted: 1983-04-12
Abstract: ABSTRACT OF THE DISCLOSURE          A razor handle having arms for pivotably engaging a razor blade cartridge, wherein a latch is provided for retaining the cartridge at a predetermined angle relative to the body portion when the cartridge is rotated to said predetermined angle.  The latch is releasable to allow the cartridge to return to the pivoting mode.
Patent CA-1167565-A (CA)
Inventor: LEMOINE MAURICE G
IPC: H04N5/94
Filed: 1981-01-30
Granted: 1984-05-15
Abstract: ABSTRACT OF THE DISCLOSURE           Apparatus is disclosed for providing compensation for missing, incorrect or otherwise defective data in a data stream preferably comprised of video information.  The apparatus is particularly useful in a magnetic recording and reproducing system for digital video data signals.  The apparatus effec-tively stores the digital video data that occurred 262 video lines prior to the current data at the input and continuously updates,  (i.e., stores in place of) the stored data with current data unless defects occur in the current data, in which case the defective current data is not stored.  The data from the store is inserted in the video data streams when the drop-outs or parity information associated with the data stream indicates that the current data is defective.          By inserting digital data which represents data that occurred 262 horizontal lines previously, the content of the substituted video information has a high probability of being visually equivalent to that of the original current data, since in most cases, it represents data from an adjacent horizontal line in a prior television yield.  The apparatus inhibits writing of data during substantial portions of the horizontal and vertical blanking intervals and thereby reduces the capacity of the storing means which is required to provide compen-sation for essentially a full field of active video infor-mation.
Patent CA-1169080-A (CA)
Inventor: KODA AKIHIDE
IPC: A61P35/00
Filed: 1981-02-13
Granted: 1984-06-12
Abstract: ABSTRACT:          Sulfonium compounds represented by the formula                         (I) have anticancer activity, immunostimulant activity and the like, and useful as the active components of drugs and agricultural chemicals.
Patent CA-1164767-A (CA)
Inventor: WATABE TOMIJI
IPC: F03B13/18
Filed: 1981-03-03
Granted: 1984-04-03
Abstract: Abstract:    A resonant type apparatus for absorbing wave energy arranged at wave-breaking facilities, which comprises, a caisson having a bottom plate, side plates, a backside plate and a top plate at least a part of which is omitted. A water chamber in the caisson has a length in a direction parallel to the side walls which is larger than 1/4 the wave length Lc of a stationary wave within the water chamber, and a node of the stationary wave in the water chamber is formed at a distance Lc/4 from the backside plate.  A pendulum is arranged at the position of the node of the stationary wave for swinging with a natural period Tp which is substantially the same value as the natural period Tw of the stationary wave, whereby the pendulum is swung by the stationary wave to absorb and convert wave energy to useful available energy at high efficiency.
Patent CA-1165942-A (CA)
Inventor: GAYMANS REINOUD J
IPC: C08G69/00
Filed: 1981-03-25
Granted: 1984-04-17
Abstract: ABSTRACT OF THE DISCLOSURE           A process for the preparation of white nylon 4,6 polyamide of high molecular weight from a tetramethylenediamine adipic acid prepolymer, formed under controlled conditions of temperature and water vapor pressure and wherein the plurality of cyclical end-groups in the prepolymer does not exceed 0.20 mg. equivalent per gram of prepolymer.
Patent CA-1164391-A (CA)
Inventor: BROWN WILLIAM F
IPC: C10G21/20
Filed: 1981-06-24
Granted: 1984-03-27
Abstract: Abstract:          A process for solvent extraction of higher aromatic hydrocarbon oils with N-methyl-2-pyrrolidone wherein N-methyl-2-pyrrolidone is separated from a solvent-extract mix in a series of distillation steps with re-circulation of a portion of a partially stripped extract mix from an intermediate distillation step to the ex-traction step to improve the solvent-oil ratio in the extraction step and conserve energy as compared with conventional processes in which the solvent power of N-methyl-2-pyrrolidone is moderated by incorporating water in the solvent.
Patent CA-1187788-A (CA)
Title: Method and kit for labeling red blood cells with technetium-99m
Inventor: NARRA RAMA K
IPC: A61K51/12
Filed: 1981-07-31
Granted: 1985-05-28
Abstract: Abstract METHOD AND KIT FOR LABELING RED BLOOD CELLS WITH TECHNETIUM-99m This invention provides a method and a kit for the labeling of red blood cells with technetium-99m using a stannous reducing agent and including the addition of an oxidizing agent along with the radioactive pertechnetate ion.
Patent CA-1166428-A (CA)
Inventor: WOLFRUM ERHARD
IPC: C02F1/28
Filed: 1981-09-25
Granted: 1984-05-01
Abstract: A process is provided for removing noxious pollutants containing sulfur and/or fluorine compounds from gaseous or liquid media by adsorption of the compounds on coke. The coke is produced by conventional processes from lignite (brown coal) containing alkaline ash compounds, particularly CaO and MgO as well as possibly Na2O, A12O3 and K2O. The coke with adsorbed suifur and/or fluorine pollutants is incinerated at temperatures selected between 700.degree.C and 1050.degree.C such that the pollutants combine chemically with the alkaline ash compounds so that the pollutants become bound in the coke ash rather than being emitted to the environment in the combustion gases.
Patent CA-1152072-A (CA)
Inventor: BARSA EDWARD A
IPC: C08G18/61
Filed: 1981-09-29
Granted: 1983-08-16
Abstract: ABSTRACT OF THE DISCLOSURE Bis(cyclic ureas) are disclosed which have the formula   wherein R is -?-alkylenen(C1-11)-?-  or     and CnH2n is ethylene or 1,3-propylene each of which can be substituted by one or more inert substituents.     These compounds are useful as masked diisocyanates which, on heating in the presence of a polyol and, optionally, a polyurethane catalyst  give rise to polyurethane resins.  Accordingly  they are useful as a component of storage stable compositions which are convertible to polyurethanes upon heating.  Such compositions are particularly useful as solvent-less coating compositions.  The properties of the above compounds are distinguished in a number of respects from the known bis(cyclic ureas) in which CnH2n has 4 or more carbon atoms in the chain between the valencies. Illustratively, the above compounds are more stable on exposure to heat in the absence of catalysts but, in the presence of polyurethane catalysts  react with polyois at a significantly faster rate than the prior art compounds.
Patent CA-1147909-A (CA)
Inventor: LINDAHL JONAS A I
IPC: D21C9/12
Filed: 1981-11-25
Granted: 1983-06-14
Abstract: METHOD FOR DELIGNIFYING AND/OR   BLEACHING CELLULOSE PULP                 ABSTRACT OF THE DISCLOSURE         A method for delignifying and/or bleaching cellulose pulp adds to the cellulose pulp a liquid which contains chlorine dioxide, causes the pulp to react with the chlorine dioxide over a selected period of time, and then reduces the amount of available active chlorine, optionally to a negligible amount, either by reducing the amount of liquid accompanying the cellulose pulp and/or by displacing such liquid with a newly supplied liquid containing no active chlorine or at most only a small amount of active chlorine; the displaced liquor can be replenished with chlorine and optionally with chlorine dioxide, and then added mainly to fresh cellulose pulp in the same bleaching stage, and/or to cellulose pulp in another bleaching stage.
Patent CA-1177183-A (CA)
Inventor: DEMMER CHRISTOPHER G
IPC: C09J161/06
Filed: 1981-12-11
Granted: 1984-10-30
Abstract: ABSTRACT OF THE DISCLOSURE     Aqueous dispersions of a phenolic resole and a thermoplastics polymeric material or a rubber, suitable for use as adhesives, are prepared by a) dissolving a solid thermoplastics polymeric material, such as a polyvinyl acetal or a nylon polyamide, or rubber in a phenol, b) adding a nonionic or anionic surface active agent and/or protective colloid, c) adjusting the mixture to a pH above 7 by addition of a base, d) adding aqueous formaldehyde solution, or a formaldehyde donor, to a molar ratio of phenol to formaldehyde within the range 1:1 to 1:3, e) if necessary, adding water, and f) heating the mixture to form a phenolic resole.
Patent CA-1194283-A (CA)
Inventor: HUSTON MARK F
IPC: B23B27/14
Filed: 1981-12-29
Granted: 1985-10-01
Abstract: ABSTRACT          A regrindable metal cutting insert (10) having a cutting edge (31) and an associated chip control surface (52) and at least one additional chip control surface (62) diesposed behind the cutting edge (31) and being exposed only when a selected portion of the insert is ground away to form a new cutting edge.  Chip configuration control is effected by means of a cutting edge formed with a transverse rake face (52) extending to a top shoulder (64) above and behind the cutting edge (31) and a rearward extending channel (50) that penetrates both the top of the insert (64) and the shelf type cutting edge (31).  Additional transverse shelves (62) are formed at spaced apart locations behind the cutting edge (31).  When regrinding is necessary, the insert (10) can be ground back to the next rearward disposed shelf (62) forming a new cutting edge with an associated chip control configuration.  The rake face (52) associated with a cutting edge (31) of the insert can be coated with a suitable material such as titanium nitride.  The insert (10) after grinding will still have a coated rake face associated with the new cutting edge.
Patent CA-1193330-A (CA)
Inventor: PAYNE THOMAS R
IPC: H05B6/12
Filed: 1982-01-28
Granted: 1985-09-10
Abstract: POWER CIRCUIT FOR INDUCTION COOKING                   ABSTRACT OF THE DISCLOSURE       An induction heating arrangement adapted for energization by a pulsating power supply of relatively low frequency is provided, in which an induction heating coil is coupled to the power supply by a pair of power transistors arranged for push-pull operation.         Alternatively switching each of the power transistors into conduction causes current pulses of opposite direction to alternately flow in the coil.  The transistors are arranged to switch at a frequency which is high relative to the frequency of the power supply and which varies directly with the instantaneous amplitude of the power supply voltage.  The amplitude of the current pulses varies directly with the instant-aneous amplitude of the power supply and the direction of the pulses varies inversely with amplitude of the power supply with the result that the amount of energy delivered to the coil by each current pulse is essentially uniform from pulse to pulse.
Patent CA-1185574-A (CA)
Inventor: BOWDITCH PHILIP N
IPC: A41D1/00
Filed: 1982-02-04
Granted: 1985-04-16
Abstract: ABSTRACT            A method and system for manufacturing articles from a strip of flexible material, when the article is characterized by one or more seams joining an associated set of non-colinear curvilinear segments. Initially, the strip of material is positioned so that the cur-vilinear segments for one seam are mutually adjacent and then those segments are joined. Thereafter, excess material is removed.