baber/WOPTO huggingface dataset:
Patent CA-1074138-A (CA)
Inventor: BOWER LEWIS R
IPC: E21D23/00
Filed: 1978-06-22
Granted: 1980-03-25
Abstract: PREAMBLE TO DISCLOSURE          BE IT KNOWN that LEWIS ROBERT HOWER and MALCOLM          WAKE, both British subjects and both of Univorsal Works, Horbury, Wakefield, England have made an invention entitled:-"MINE ROOF SUPPORTS" the following disclosure contains a correct and full description of the invention and of the best mode known to the Inventors of taking advantage of the same.                 ABSTRACT OF THE DISCLOSURE          A mining installation comprises an armoured conveyor made up of a plurality of pans articulated together end-to-end, a plurality of hydraulically powered, self-advancing mine roof supports located side by side along the goaf side of the conveyor, each roof support being connected to a pan by one or more double-acting advancing rams, and each having a base means incorporating a pair of spaced, elongate base members seating on a mine floor, each support further having a forward end intended to be located, in use, adjacent the goaf side of the conveyor and a rearward end intended to be remote from the conveyor, a rail located between the base members and attached at a forward end thereof to a pan of the conveyor, and a lifting jack carried by the base members at or near the front end thereof and operable on the rail to lift the front ends of the base members from the mine floor and in this condition be advanced towards the conveyor by operation of the one or more double-acting advancing rams.
Patent CA-1117009-A (CA)
Inventor: SEDLACEK HANS H
IPC: A61K39/00
Filed: 1978-07-14
Granted: 1982-01-26
Abstract: CARRIER-BOUND IMMUNOGLOBULIN FISSION PRODUCT AND ITS             USE IN IMMUNOLOGIC ANALYSES  Abstract of the disclosure:  A fission product of an immunoglobulin with immunolo-gically functioning Fc-portion is bound to a carrier by adhesion or a chemical reaction.  It can be used in an immunological analytic process for the determination of Fc-reactants in aqueous solutions.
Patent CA-1111690-A (CA)
Title: Dispositif de couplage pour fibre optique
Inventor: JEUNHOMME LUC
IPC: H01B11/00
Filed: 1978-07-24
Granted: 1981-11-03
Abstract: L'invention concerne un dispositif de couplage pour fibre optique. Des moyens de couplage de modes par courbures alternées de la fibre sont associés à un adaptateur d'indice entourant la fibre et parcouru par un ensemble de rayons lumineux faisant tous un même angle avec l'axe de celle-ci, et cet adaptateur est muni d'une surface optique conique pour faire correspondre un faisceau parallèle à cet ensemble de rayons. Application aux télécommunications.
Patent CA-1097271-A (CA)
Inventor: KAUER JOHANN
IPC: B65B67/06
Filed: 1978-08-14
Granted: 1981-03-10
Abstract: SPECIFICATION     SEALING DEVICE FOR SECURING OR SEALING BAGS OR SACKS             OF FLEXIBLE MATERIAL     ABSTRACT OF THE DISCLOSURE    In a device for securing or sealing a twisted neck portion of a bag or sack of flexible material, a slit is provided in a housing and the latter carries a roll of adhesive tape.   The twisted neck is pushed into the slit.   A tape guide member, a tape cutter, an actuating arm and a spring loaded arm cooperate to effect the sealing or securing. the housing has a handle near the closed end of the slit.
Patent CA-1097570-A (CA)
Inventor: TULLOCH GAVIN E
IPC: F01N1/00
Filed: 1978-08-18
Granted: 1981-03-17
Abstract: ABSTRACT           A method and apparatus for reducing acoustic noise associated with the release of gases from a submerged device, such as a sea water battery.  A flat piece of material, preferably polyurethane, is mounted onto the top of the device,  The piece of material is provided with an outwardly extending lip on the lower surface thereof adjacent an outlet port through which the gases issue.  The lower surface of the lip is preferably curved upwardly and outwardly away from the outlet port and is disposed immediately at the upper edge of the outlet port.  Gas emitted from the outlet port immediately forms bubbles on the lower surface of the lip, and the bubbles so formed pass outward and upwardly along the lower surface and subsequently escape into the free water.
Patent CA-1140889-A (CA)
Inventor: RONKAINEN PENTTI P
IPC: B01D3/20
Filed: 1978-09-29
Granted: 1983-02-08
Abstract: ABSTRACT OF THE DISCLOSURE         There is described a bubble-cap column for the distill-ation of high sediment or clogging liquids, the column including at least one plate, a plurality of bubble-cap structures provided on the plate, each structure comprising a bubble-cap overlying a neck portion. The bubble-caps are arranged in at least one row on the plate and are suspended from an elongate carrier connected to each of the aligned bubble-caps to permit the concurrent re-moval of the bubble-caps from the column with the carrier.
Patent CA-1068126-A (CA)
Inventor: SLOWIK ALFRED A
IPC: G01N1/22
Filed: 1978-10-16
Granted: 1979-12-18
Abstract: AUTOMATIC PULVERIZED COAL SAMPLER            ABSTRACT OF THE DISCLOSURE        An apparatus for sampling powdered material which is moving along with a flow of gas or air through a large pipe.          A probe located in the center of the pipe and facing upstream is connected to a smaller conduit leading to a cyclone separator.          When a valve on the conduit is opened periodically, a free flow of gas and powdered material goes through the conduit to a cyclone separator.  At the bottom of that separator is a sample-collecting container which can be removed periodically to test the accumulated contents.  The valve on the conduit is opened and closed by means of air pressure.  Prior to opening of that valve, that same air pressure is used to purge the conduit between the valve and the probe of accumulated powdered material.
Patent CA-1123225-A (CA)
Title: Compensated capacitive transducer  demodulator circuit
Inventor: LEE CHEN Y
IPC: G01D5/241
Filed: 1979-01-16
Granted: 1982-05-11
Abstract: ABSTRACT OF THE DISCLOSURE    A compensation technique and network circuitry for a quad-diode demodulator and capacitive transducer combi-nation is disclosed.   The compensation method includes varying the amplitude of An alternating carrier frequency oppositely to the changes produced in that amplitude by the compensable errors in the demodulator and transducer. In one preferred embodiment ratiometric compensation and temperature  compensation  for  the demodulator  and  any capacitive  transducer   is  produced.     In  a second embodiment  linearization  and  temperature  compensation for the demodulator and a quartz capacitive transducer is provided.
Patent CA-1144182-A (CA)
Inventor: YANG KANG
IPC: C07C41/00
Filed: 1979-02-19
Granted: 1983-04-05
Abstract: BARIUM OXIDE CATALYZED ETHOXYLATION       Abstract of the Disclosure Barium oxide is used as an ethoxylation catalyst for the reaction of ethylene oxide and alkanols of all classes.  The reaction is carried out at temperatures of from about 200 to about 500°F to yield the ethoxylated product.  The product obtained has a very narrow, high adduct distribution with low levels of by-products and unreacted free alcohols.  Calcium and magnesium oxides show no catalytic effect.
Patent CA-1122508-A (CA)
Inventor: CHOW SUEZONE
IPC: B32B21/00
Filed: 1979-03-01
Granted: 1982-04-27
Abstract: ABSTRACT OF THE DISCLOSURE Wood can be hot-pressed into various composites using as adhesive subdivided plant foliage.  Considerable bond strength is achieved, the bonds having water resistance adequate for many uses.  The foliage is the primary adhesive i.e., is greater than 95% wt. of the active adhesive com-ponents present.  The foliage can be used either in the form of a powder or as a dispersion in an aqueous liquid carrier.  The foliage-wood system is hot-pressed to achieve the desired bonding, the pressing temperature being above the softening temperature of the foliage.  The softening temperature of the foliage varies depending on the moisture content.  The foliage proportions in the composite can range from about 1% to about 60% by wt. or more in some cases.  Increased bond strengths have been achieved using form-aldehyde crosslinking agents or alkaline additives.
Patent CA-1113042-A (CA)
Inventor: STONE ALAN M
IPC: B07B13/10
Filed: 1979-04-02
Granted: 1981-11-24
Abstract: ABSTRACT OF THE DISCLOSURE          Method and apparatus for bulk sorting particulate material such as ore rocks.  A conveyor belt carries the material in a continuous stream past a detector responsive to a required characteristic to produce a time sequence of detector signals dependent on degree to which material passing the detector possesses that characteristic.  The material is projected from the downstream end of the conveyor belt into free flight trajectory and a deflector plate is moved across the face flight path so that material in some zones of the stream is deflected whereas material in other zones is not deflected.          A control circuit monitors the detector signals and causes the deflector plate to move so that said zones are determined by the degree to which the material in them possesses the required characteristic.
Patent CA-1090675-A (CA)
Inventor: GRISWOLD DAVID E
IPC: E03B7/07
Filed: 1979-05-10
Granted: 1980-12-02
Abstract: ABSTRACT OF THE DISCLOSURE Two identical check valves assemblies are connected in series with a zone between them.  A differential control valve vents this zone to atmos-phere whenever the downstream pressure approaches the upstream pressure within a predetermined magnitude.  The action of the differential control valve is responsive to differential pressure across the upstream check valve.
Patent CA-1107087-A (CA)
Inventor: ILLY ERNESTO
IPC: A47J31/06
Filed: 1979-06-01
Granted: 1981-08-18
Abstract: ABSTRACT OF THE DISCLOSURE       A coffee machine has an assembly provided with a chamber for receiving a permanent filter selected, accord-ing to the taste preference of a user, from a set of such filters which each offer different flow resistance to water per unit time. A pod of ground compressed coffee is also removably receivable in the chamber; the characteristics of pod and filter are so selected that during each op-eration of the machine between 22-26% of the total aroma-tic substances present in the coffee in the pod, are extracted by hot water flowing through the pod. However, due to the different flow resistance offered by different filters, the quantity of beverge produced during a pre-determined operating time will vary. In dependence upon the particular selected filter, the extracted aromatic substances will therefore be more or less diluted in the beverage, to suit a particular taste,
Patent CA-1105763-A (CA)
Title: Device for lifting implements carried on agricultural  tractors
Inventor: BENASSI GIAN C
IPC: A01B63/112
Filed: 1979-06-11
Granted: 1981-07-28
Abstract: ABSTRACT             A tractor three-point linkage has a hydraulic single-acting actuator for raising lower linkage arms through a linkage including respective vertical tie rods.  A flexible compensating bar is rotatably supported by two fixed brackets on the tractor, the central region of the bar cooperating with a cam surface on a pivoted intermediate member acting through a mechanical transmission on the displaceable valve member of a distributor which controls the operation of the actuator to lift the linkage arms when the ground reaction force on the implement exceeds a limit.  To increase the speed of return of the implement to the ground the invention provides for return movement of the distributor valve in response to vertical flexure of the bar caused by the weight of the implement, when lifted out of the ground, acting on the bar through the arms.
Patent CA-1117850-A (CA)
Inventor: DAGENAIS JOSEPH E
IPC: A01G23/087
Filed: 1979-07-23
Granted: 1982-02-09
Abstract: SLICING APPARATUS FOR FELLING TREES      Abstract of the Invention A substantially planar base plate has a notch therein of a size suitable for receiving tree trunks.  The notch has a first and second side, each side being opposite the other.  A substantially planar blade has a convex, arc-shaped cutting edge, and is pivotally attached for swinging across the top surface of the plate from the first side of the notch toward the second side so as to slice through a trunk received within the notch.  A pair of underbeveled surfaces are located adjacent the notch's second side for undercutting a trunk with respect to the blade so that the tunk leans in the direction of blade swinging during slicing. An hydraulic ram connected to the blade swings it at a preselected slice rate chosen to cause, during slicing, a blade travel speed which has a predetermined relationship to the rate of trunk leaning.
Patent CA-1125871-A (CA)
Inventor: BAKER RICHARD H
IPC: H03K17/04
Filed: 1979-08-09
Granted: 1982-06-15
Abstract: (U.S. 944,562) ABSTRACT OF THE DISCLOSURE         The output transistor of a switching circuit is driven into saturation for obtaining fast turnon thereof, and maintained in satura-tion during a substantial portion of its period of operation, for obtaining minimum power dissipation thereof relative to its unsaturated state, A short time before turning off the output transistor, a diode is connected across its base and collector electrodes, for diverting some of the base current from the base electrode into the collector electrode thereof, thereby causing the transistor to come out of saturation, reducing the accumulated charge in the base region thereof, permitting faster turnoff of the transistor relative to its saturated state.
Patent CA-1116660-A (CA)
Inventor: HART JAMES E
IPC: B60T17/10
Filed: 1979-11-16
Granted: 1982-01-19
Abstract: (Case No. 7020) ABSTRACT OF THE DISCLOSURE    Brake apparatus for a railway vehicle including a brake cylinder device of the type having a pair of interconnected pistons to which the vehicle brake rigging is connected, the larger piston having a pair of chambers formed on opposite sides in which air is stored, and a control valve device that is operative responsive to a reduction of brake pipe pressure to connect pressure from the one side of the larger piston to a corresponding side of the smaller piston to effect movement of these pistons to a brake application position and concur-rently vents pressure in the chamber on the other side of the larger piston.  A transfer valve device is provided to inter-rupt this exhaust of pressure from the chamber on the other side of the piston until the piston has moved to application position so that the chamber volume is minimal and thus renders a minimum amount of air exhaust sufficient to produce brake applying pressure differentials across this larger piston.
Patent CA-1166695-A (CA)
Inventor: BATHAM IAN N
IPC: G01V3/02
Filed: 1979-12-05
Granted: 1984-05-01
Abstract: ABSTRACT Apparatus is provided for detecting ferrous contamination in a fluid such as engine transmission lubricant.  The apparatus has two spaced apart electrodes, a magnetic flux extending between the electrodes the lines of force of which are substantially rectilinear, the electrodes being connectable to a circuit for signalling when an electrically conductive path is formed from one electrode to the other by metal particles attracted to the flux and formed into an electrode spanning bridge.  For preference the sensor is a hollow plug, which in use is screwed into a transmission housing port, and has a flat end wall in contact with the lubricant in the housing.  The plug contains a magnet having both poles disposed towards the plug end wall, a portion of the end wall acting as one electrode.  A ferromagnetic disc mounted externally from the plug end wall, and electrically insulated therefrom, overlies the poles.  The disc acts as a second electrode and serves to direct the magnetic flux rectilinearly across the gap between the electrodes.  The electrodes are connectable to circuit means whereby a change in interelectrode resistance may be detected.
Patent CA-1118017-A (CA)
Title: Wheel trim assembly
Inventor: SPISAK EDWARD G
IPC: B60B7/04
Filed: 1980-01-03
Granted: 1982-02-09
Abstract: A-362 S & S                    ABSTRACT OF THE DISCLOSURE     A wheel trim assembly for mounting on a vehicle wheel including a decorative cover portion of plastic, a retainer ring for holding the assembly on a wheel and a clamping ring permanent-ly joining the cover and retaining ring without the use of fasteners.
Patent CA-1131219-A (CA)
Title: Procede de preparation de mononitro-tetrahydro-1,2,3, 4 anthraquinones
Inventor: DELAVARENNE SERGE Y
IPC: C07C201/00
Filed: 1980-01-18
Granted: 1982-09-07
Abstract: Procédé de préparation de dérivés mononitrés de la tétrahydro-1,2,3,4-anthraquinone à partir de la tétrahydro-1,4,4a,9a anthraquinone caractérisé par le fait que l'on effectue un prétraitement thermique de la tétrahydro-1,4,4a,9a-anthraquinone en présence d'un catalyseur d'hydrogénation sous atmosphère inerte et en l'absence d'oxydants ou de réducteurs, sépare l'anthraquinone sous produite ainsi que le catalyseur et soumet le mélange de tétrahydro-1,2,3,4 anthracènediol-9,10 et de tétrahydro-1,2,3,4 anthraquinone obtenu à une réaction de nitration.  L'avantage d'un tel procédé par rapport à l'art antérieur réside essentiellement dans le fait que l'on évite une réaction d'hydrogénation catalytique et éventuellement une réaction d'oxydation et par conséquent le plus souvent la mise en oeuvre de technologies complexes inhérentes aux réactions effectuées sous pression.
Patent CA-1134462-A (CA)
Inventor: JANAK MILOSLAV
IPC: G11B5/09
Filed: 1980-02-14
Granted: 1982-10-26
Abstract: Device for synchronizing a clock pulse generator with a serial data signal. ABSTRACT.     During the reading of serial data signals, for example, from a so-termed magnetic floppy disc, a synchroni-zed condition between the local oscillator of the reading device and the timing of the data stream must be reached as quickly as possible after the start of the read operation. When the initial synchronization has been reached, readjust-ment of phase and frequency may take place only slowly, be-cause the instants at which the actual signal transitions occur may exhibit a large spread with respect to the nomi-nal instants. Therefore, during a synchronization operation an element of a read clock pulse train is applied to the phase comparator at each status transition of the medium as well as at further instants. Furthermore, the data sample signal (control clock pulse train) of` the clock pulse gene-rator to be synchronized is applied at twice the bit fre-quency to the other input of the phase comparator. As a result, during the synchronization operation the phase com-parison is performed in a dense series, so that the low-pass filter connected to the output of the phase comparator may have a high cut-off frequency. Once the synchronization has been realized, the phase comparison is performed only once per data bit and, moreover, the low-pass filter is switched over to a lower cut-off frequency.
Patent CA-1126102-A (CA)
Inventor: GUNJI NAOKI
IPC: C23C2/00
Filed: 1980-02-28
Granted: 1982-06-22
Abstract: METHOD AND APPARATUS FOR CONTINUOUSLY HOT-DIP GALVANIZING STEEL STRIP     ABSTRACT OF THE DISCLOSURE       A method and an apparatus for continuously hot-dip galvanizing a steel strip, which comprises:   using a hot-dip galvanizing tank divided into a reaction chamber and a plating chamber having a bottom wall downwardly inclining toward the bottom wall of said reaction chamber, by a vertical partition provided, at the lowermost end thereof, with a gap and, at the upper end portion thereof, with an aperture of which the opening can be adjusted, said reaction chamber and said plating chamber communicating with each other through said gap and said aperture; causing a hot-dip galvanizing bath containing aluminum in a prescribed amount, contained in said hot-dip galvanizing tank, to circu-late by convection, under the effect of stirring by a stirring means provided in said reaction chamber, through said gap and said aperture, between said reaction chamber and said plating chamber; continuously introducing a steel strip into said hot-dip galvanizing bath in said plating chamber while con-tinuing said stirring, to subject said steel strip to a hot-dip galvanizing treatment; adjusting the thickness of a galvanized layer formed on the surface of said steel strip directly above the surface of said hot-dip galvanizing bath to manufacture a hot-dip galvanized steel strip; on the other hand, causing a bottom dross (FeZn7) produced during said hot-dip galvanizing treatment and accumulated on the bottom of said plating chamber, to flow down along the slant bottom wall of said plating chamber to the bottom of said reaction chamber; causing said bottom dross to actively react with aluminum contained in said hot-dip galvanizing bath in said reaction chamber under the effect of said stirring by said stirring means,to convert said bottom dross into a sur-face dross (Fe2Al5); and, substantially removing said surface dross floating on the surface of said hot-dip galvanizing bath in said reaction chamber, from said reaction chamber, during said hot-dip galvanizing treatment.
Patent CA-1142017-A (CA)
Inventor: KLOSE ROBERT E
IPC: A23L27/30
Filed: 1980-03-04
Granted: 1983-03-01
Abstract: CHEWING GUMS OF IMPROVED SWEETNESS RETENTION                  ABSTRACT OF THE INVENTION      This invention relates to a sweetened chewing gum composition which contains L-aspartyl-L-phenylalanine ethyl ester (APM) in amounts up to 1.5% by weight of the total product.  The improve-ment comprises a gum which has a pH of between 5.0 and 7.0 so that the degradation of APM to di-ketopiperazine is minimized and the storage stability of the gum is greatly increased.
Patent CA-1158806-A (CA)
Inventor: ALEXANDER HAROLD
IPC: A61B17/80
Filed: 1980-04-09
Granted: 1983-12-20
Abstract: BIO-ABSORBABLE COMPOSITE TISSUE SCAFFOLD                   ABSTRACT OF THE DISCLOSURE            A bio-compatible composition suitable for constructing  surgical articles for the repair or replacement of a part of the body of a human or non-human animal, e.g., ligaments, tendons, bones, comprising a composite of a bio-absorbable polymer and at least one substrate of a plurality of carbon fibers.
Patent CA-1150442-A (CA)
Inventor: OYAIZU YOSHIJIRO
IPC: C08G18/00
Filed: 1980-04-10
Granted: 1983-07-19
Abstract: ABSTRACT OF THE DISCLOSURE        A polyurethane elastomer is produced by mixing a hardener composition containing a polyamine, a long chain poiyol having an average molecular weight of 300 to 4,000 and a catalyst with an isocyanate composition comprising a prepolymer having terminal isocyanate group and an average molecular weight of 500 to 5,000 and an organic diisocyanate monomer with or without a triisocyanate monomer, the ratio of isocyanate groups of said prepolymer to amino groups of said polyamine being in the range of 0.6 : 1 to 1.5 : 1 and the ratio of a total of isocyanate groups in said isocyanate composition to the sum of amino groups of said polyamine and hydroxyl groups of said long chain polyol is in the range of 0.8 : 1 to 1.4 : 1.
Patent CA-1124236-A (CA)
Inventor: WHEELER WILLIAM J
IPC: E04G11/38
Filed: 1980-04-18
Granted: 1982-05-25
Abstract: Abstract The crystalline D-sesquisodium salt of the oxa-.beta.-lactam antibiotic diacid compound of the formula   and process for its preparation via acetone dilution of an aqueous solution of non-crystalline D,L-diacid and D,L-disodium salt.