baber/WOPTO huggingface dataset:
Patent CA-1170789-A (CA)
Inventor: CUTTER JAMES W
IPC: A61B6/06
Filed: 1981-04-16
Granted: 1984-07-10
Abstract: COMPACT X-RAY COLLIMATOR              Abstract of the Disclosure An X-ray collimator comprising an X-ray shielded enclosure having aligned entrance and exit apertures for permitting passage of an X-ray beam, the exit aperture having a generally rectangular configuration defined by edges of two orthogonally disposed pairs of opposing rotatable exit shutter elements.  Each of the exit shutter elements has a generally semi-cylindri-cal configuration and is concentrically disposed about a respec-tive axis of rotation.  Each pair of semi-cylindrical exit shutter elements is mounted for opposing rotatable movement within the other pair of semi-cylindrical exit shutter elements.     The entrance aperture of the housing may be defined by two orthogonally disposed pairs of opposing shutter plates, one pair thereof being directly linked to an associated pair of semi-cylindrical exit shutter elements for corresponding movement therewith.
Patent CA-1164631-A (CA)
Inventor: JORDAN OTIS D
IPC: A62D3/36
Filed: 1981-05-15
Granted: 1984-04-03
Abstract: ABSTRACT             A system and apparatus therefor for the removal and destruction of harmful toxic polychlorinated biphenyls (PCBs) from a fluid, such as electrical transformer oil. The contami-nated fluid is pumped through heating equipment to raise its temperature to a predetermined level prior to its being fed into a mixing chamber. An injector mechanism feeds a predetermined quantity of a reagent, such as an elemental sodium dispersion, into the mixing chamber where a power-driven impeller thoroughly mixes the two fluids. This mixture is fed into a reaction zone, preferably consisting of a plurality of closely nested back-and-forth tubes of a predetermined length and cross-sectional area wherein a chemical reaction occurs between the PCB-fluid and reagent forming harmless by-products which are insoluble in the now-decontaminated fluid, The solid by-products are removed in a separator, such as a filtering medium or centrifuge, and ally gases and water vapor are removed in a deep vacuum degasser. The trapped, harmless by-products then can be disposed of in a conventional, safe manner and the decontaminated fluid can be returned to its point of origin for reuse.
Patent CA-1165088-A (CA)
Inventor: STIRLING WILSON M
IPC: E04F13/08
Filed: 1981-06-25
Granted: 1984-04-10
Abstract: ABSTRACT         A panelling clip for fixing tongue and groove boards comprises a main body 14 to engage against the front face of the re-entrant flanges 2,6 of a channel 24. An integral plate 18 extends rearwardly from the main body 14 and has laterally projecting tabs 20 with sharp edges 21 to grip the rear faces of the flanges 26. A platform 13 integral with the main body 14 extends forwardly therefrom and has downwardly projecting tabs 12. In use tongue and groove boards are placed against spaced parallel channels and clips are fitted and pressed into engagement with the board grooves alternating with the boards.
Patent CA-1118242-A (CA)
Inventor: LOCOCO MICHAEL P
IPC: A61C9/00
Filed: 1981-07-13
Granted: 1982-02-16
Abstract: ABSTRACT OF THE DISCLOSURE          A combined dental impression tray with a syringe is provided, wherein the communication between the syringe and the tray is effected, in the most preferred embodiment, by way of a side opening in the wall of the barrel of the syringe.  The opening communicates with the bottom section of the tray and is very short compared to the diameter or cross-sectional area of the passage for the impression material.  The opening is arranged such that it can be closed by the piston of the syringe while a first impression of the tissue area is taken.  A device detachably secured to the tray apparatus is also provided to facilitate cutting out of a portion of the dental mixture, the cutting device being preferably of the type of a reciprocating tubular cutting die whose edge engages the bottom wall of the tray at a close spacing about the said opening.  The advance in the art is in an arrangement which avoids any narrow passages between the syringe and the tray or channels difficult to clean and causing entrapment of air bubbles which may result in a reduced quality of the impression.
Patent CA-1158954-A (CA)
Title: Multiple layer insulation cover
Inventor: FARRELL JAMES J
IPC: E04H15/54
Filed: 1981-07-20
Granted: 1983-12-20
Abstract: MULTIPLE LAYER INSULATION COVER                 ABSTRACT OF THE DISCLOSURE     A  multiple layer insulation cover for preventing heat loss in, for example, a greenhouse, is disclosed.  The cover is comprised of spaced layers of thin,, foil covered fabric separated from each other by air spaces.  The spacing is accomplished by the inflation of spaced air bladders which are integrally formed in the cover and to which the layers of the cover are secured.  The bladders are inflated after the cover has been deployed in its intended use to separate the layers of the foil material.  The sizes of the material layers are selected to compensate for sagging across the width of the cover so that the desired spacing is uniformly maintained when the cover has been deployed.  The bladders are deflated as the cover is stored thereby expediting the storage process and reducing the amount of storage space required.
Patent CA-1181546-A (CA)
Inventor: CUSCURIDA MICHAEL
IPC: C08G18/12
Filed: 1981-07-21
Granted: 1985-01-22
Abstract: ABSTRACT OF THE DISCLOSURE         A polyurea polymer polyol made by the reaction of a hydroxyl-containing amine, a polyether polyol of about 3,000 to 8,000 molecular weight an an organic polyisocyanate is disclosed.  This polyurea polymer polyol may be used in the manufacture of flexible polyurethane foams which are firmer and stronger than similar products using conventional polyol 5.
Patent CA-1174128-A (CA)
Inventor: JABSEN FELIX S
IPC: F28F9/00
Filed: 1981-07-31
Granted: 1984-09-11
Abstract: ABSTRACT      A tube support structure for a helically coiled fluid heat exchanger including a plurality of support strips interconnected by a plurality of support members.  Two tubes are nested between support members against a support strip, a spring plate is placed over the tubes and a second strip is pressed on the assembly to the desired spring pressure and affixed.
Patent CA-1128370-A (CA)
Inventor: BICKEL HANS
IPC: B61D17/22
Filed: 1981-07-31
Granted: 1982-07-27
Abstract: ABSTRACT OF THE DISCLOSURE        A passageway system (vestibule system) for providing a space and passage for passengers to walk between two vehicles, especially railway cars.  In order to provide complete protection from the elements, the entire passageway is surrounded by a sealing membrane and the two separable portal halves are joined together and are held in a well-defined central position.  Due to the construction of the passageway as a framework held entirely within the fully surrounding bellows, the passengers are protected in all positions of the passageway and the associated railways cars.  The support frame for the passageway may include support arms which carry the entire weight of the passageway and permit the use of vehicles couplers that cannot provide a support function.          The passageway includes bridge members, one of which is attached to the threshold of the car and the other is attached to the threshold of the central portal and the two bridge elements cooperate by gliding on top of one another in the manner of fish scales.  The passageway is able to accommodate any rotations and displacements which occur during the normal motion of coupled vehicles.  When suspension failure occurs in one of the vehicles, the weight of the passageway is entirely absorbed by the intact car.
Patent CA-1151036-A (CA)
Inventor: RODNEY PETER W
IPC: A63B69/40
Filed: 1981-08-28
Granted: 1983-08-02
Abstract: GOLF BALL DRIVING DEVICE               ABSTRACT OF THE DISCLOSURE      A golf ball driving  device is disclosed,  being  a device   which   is   mounted   on   wheels   for   easy manoeuvreability, and having  generally an operating and transport handle,  and a  trigger  release handle.   The operating  handle has  a  cam  and  ratchet at its lower end,  for driving a  ratchet bar  against a  compression spring  (or  pneumatic cylinder)  to  create compression force.  The trigger release handle  has  a follower  arm which  latches against  the  ratchet  bar,  and  it  is moveable  to  release  the ratchet  bar  and thereby  to release  the compression force.  A  striker  plate moves forwardly   and   downwardly   upon   release   of   the compression, to strike a golf ball  when  in place.  The striker plate is rotatably adjustable so that  its angle and  point  of  impact  against  a   golf  ball  may  be adjusted.      No. PAT6092
Patent CA-1187519-A (CA)
Inventor: WINKLER THEODORE
IPC: G07D7/182
Filed: 1981-09-15
Granted: 1985-05-21
Abstract: ABSTRACT OF THE DISCLOSURE A novel apparatus is provided herein for sorting sheets in accor-dance with certain criteria.  The apparatus includes an infeed hopper for receiving a stack of sheets.  Means are provided for feeding sheets in a one-at-a-time fashion at spaced intervals from the infeed hopper along a predetermined path.  Plural output stacking means are provided.  Intermediate means are included for moving the sheets from the location of the sensing means towards the output stacking means.  Means are provided for sensing each sheet as it moves along the path.  Diverting means, comprising a revolvable gate member positioned in the path of sheets being moved by the intermediate delivery means are provided.  Means are provided which are responsive to a signal from the sensing means for controlling the direction of rotation of the gate member.  Finally,  first and second final delivery means are provided for respectively receiving sheets diverted by the gate member when the gate member rotates clockwise or counterclockwise respect-ively, and for delivering a received sheet to an associated one of the out-put stacking means.  The first and second delivery means abruptly accelerate sheets received from the gate member.  This provides a novel documents handling apparatus capable of routing sheets being handled thereby to one of a plurality of paths without interruption of the normal handling operation and with no decrease in normal operating speed.
Patent CA-1177864-A (CA)
Inventor: REMINGTON RICHARD C
IPC: E05B37/02
Filed: 1981-09-24
Granted: 1984-11-13
Abstract: ABSTRACT OF THE DISCLOSURE        A latching system for a luggage article comprises a pair of spaced swiveling latches mounted on the interior of a front wall of the article, the latches being connected together for swiveling movement in unison between latching and unlatching positions by means of an endless drive cable. The latches are operated by a single manual actuator in-cluding a swiveling lever connected to one of the latches by a lost motion connection which allows the lever to be returned to a rest position after moving the latches into their latching or unlatching positions.  A combination lock is provided for locking the actuator lever in the rest position except when the lock is on combination.
Patent CA-1195406-A (CA)
Inventor: HARRIS GEOFFREY J
IPC: H05K13/00
Filed: 1981-10-21
Granted: 1985-10-15
Abstract: ABSTRACT          "Proximity Switch"                           (Fig . 1) The switch is of the type, known per se, in which an induction coil is driven by an oscillator.  The coil      is initially positioned in an end cap and secured therein by potting with epoxy resin     . This allows the coil and cap to be handled as a unit during manufacture without damage to the coil.  The switch is calibrated and adjusted automatically by abrading away part of a resistive layer on a circuit substrate     .   The circuitry of the switch has its lower potential side coupled to the housing      via a capacitor, by means of a conductive adhesive tape trapped between the housing      and an end closure.
Patent CA-1172297-A (CA)
Inventor: CRUMB DONALD A
IPC: B60T11/28
Filed: 1981-11-26
Granted: 1984-08-07
Abstract: ABSTRACT OF THE DISCLOSURE     A dual master cylinder (10) includes a pair of pistons (62, 106) moving in a bore (14) to contract a pair of pressure chambers (64, 108). A housing 12 defines a pair of inlets (26, 28) com-municating liquid from a reservoir (18) into the pair of pressure chambers (64, 108). A pair of outlets (46, 48) communicate liquid from the pair of pressure chambers (64, 108) to a pair of brake systems (50, 52). A pair of tilt valves (34, 36) control liquid com-munication through the irlets (26, 28).  The pair of pistons (62, 106) carry a pair of valve actuators (182, 210) which open and close the pair of tilt valves (34, 36) in response to movement of the pair of pistons (62, 106) within the housing (12). The pair of actuators (182, 210) cooperate with one another to simultaneously close the pair of tilt valves (34, 36) during a brake application.     (Figure 2)
Patent CA-1178343-A (CA)
Inventor: ZUREK THOMAS E
IPC: B23K11/25
Filed: 1981-11-30
Granted: 1984-11-20
Abstract: WELDING CONTROL WITH AUTOMATIC PERCENT HEAT ADJUSTMENT Abstract of the Disclosure This welding control method and apparatus automatically adjusts the percent heat of a welding machine in response to the duration of the preceding welds.  The duration of each weld is measured by counting the line cycles.  The line cycle count is compared with a percent heat increase condition and with a percent heat decrease condition of a preselected percent heat algorithm.  The percent heat is incremented in response to the percent heat increase condition being met and the percent heat is decremented in response to the percent heat decrease condition being met.  The control detects the weld resistance at the peak of each line cycle and compares the detected resistance with a resistance condition of a preselected resistance algorithm.  The weld is terminated in response to the resistance condition being met and the cycle count being between a low limit count and a high limit count.  The percent heat increase condition occurs at a predetermined number of successive welds terminating at the high limit count and the percent heat decrease condition occurs at a predetermined number of successive welds terminating at the low limit count.
Patent CA-1182554-A (CA)
Inventor: FOX SIDNEY J
IPC: H04N1/40
Filed: 1981-12-11
Granted: 1985-02-12
Abstract: ABSTRACT OF THE DISCLOSURE            An image processing apparatus and method adapted for use with a bilevel printer to reproduce mixed format documents including text and photographs.  The  image processing apparatus includes an input buffer means for storing pixels.  For each pixel of interest, a gradient signal of surrounding pixels is generated. A plurality of reflectance signals representative of the characteristics of pixels downstream from the pixel of interest is determined.  A plurality of machine state signals representative of desired reflectance characteristics of a document are stored. A controller correlates the state signals, the reflectance signals and the gradient signals to select an optimum thresholder for printing text or photographs.
Patent CA-1171129-A (CA)
Inventor: BEACH DARYL R
IPC: A61G13/00
Filed: 1981-12-17
Granted: 1984-07-17
Abstract: ABSTRACT OF THE DISCLOSURE          The invention is concerned with a structurally simpli-fied dental service apparatus generally usable for collective dental examination and practical exercises in dental hygienist training schools.  The apparatus is easily transportable in disassembled form and assembled on the scene of a dental exami-nation.  It may be employed as advantageous in dental clinics.          It comprises an examination bed having an upper surface providing a substantially horizontal flat area, a headrest detachably mounted to an edge of said bed, an overhanging support member means for detachably mounting said overhanging support member to an edge of said examination bed such that an overhanging portion thereof extends above said headrest, a light projector support means fitted on said overhanging portion of said support member, and means for supporting a dental tray.
Patent CA-1169459-A (CA)
Inventor: SCHWOB PIERRE
IPC: G01K1/16
Filed: 1981-12-24
Granted: 1984-06-19
Abstract: A THERMISTOR-TYPE TEMPERATURE SENSOR        FOR A HEATING ELEMENT                 Abstract of the Disclosure A temperature sensor and attachment means for an electric resistance-type heating element designed for electronic heat regulation.  The thermistor of the heat-regulating device is inserted within the mass of the heating element.  The orifice formed for the insertion of the thermistor is closed by means of a metal sealing plug having substantially the same composition as the heating element.
Patent CA-1188920-A (CA)
Inventor: DE VRIES ALBERT
IPC: A23F3/40
Filed: 1982-03-31
Granted: 1985-06-18
Abstract: Abstract of the disclosure:           Preparation of a flavour composition suitable for flavouring tea, by mixing an oily, foreign flavour with an aqueous tea extract or an aqueous solution of a dried tea extract to form an oil-in-water emulsion, followed by spray drying the resulting emulsion. The spray dried product may be agglomerated with dust tea, and the agglomerated product may be mixed with leaf tea and packed in teabags of wet-strength paper.
Patent CA-1173267-A (CA)
Inventor: LEE SHIH-YING
IPC: G01L1/14
Filed: 1982-03-31
Granted: 1984-08-28
Abstract: ABSTRACT OF THE DISCLOSURE          This invention relates to transducers and discloses a high resolution, high accuracy force transducer.  The transducer comprises a pair of opposed rigid-body force summing members lying along a central axis.  Each of the sum-ming members includes a sensor member extending along the cen-tral axis toward the other summing member.  These sensor members include opposing sensing portions which are mutually offset in the direction of a first reference axis perpendicular to the central axis.  A pair of beam members extend between and couple the force summing members and are flexible about axis parallel to a second reference axis but are substantially rigid other-wise.  This assembly is straight forward and adequately maintains the sensing plate parallel over a range of forces.
Patent CA-1177349-A (CA)
Inventor: TODD GARY J
IPC: F41B5/18
Filed: 1982-04-20
Granted: 1984-11-06
Abstract: Abstract of the Disclosure A release device for pulling the midsection of a bow string, the device having a slot for receiving the bow string, and a pair of balls that engage one another to close the slot to retain the bow string until such time as the user manipulates a trigger to permit separation of the balls and release the bow string.
Patent CA-1182851-A (CA)
Inventor: SMITH DONALD A
IPC: C21B5/00
Filed: 1982-04-22
Granted: 1985-02-19
Abstract: FLOW SPLITTER FOR DIVIDING A STREAM OF PULVERULENT MATERIAL         INTO MULTIPLE STREAMS ABSTRACT OF THE DISCLOSURE          A flow splitter for dividing a single stream of pulverulent material entrained in air into a multiplicity of substantially equal substreams for delivery to a multiplicity of receiving stations.
Patent CA-1174929-A (CA)
Inventor: BOARINI EDWARD J
IPC: A61M25/06
Filed: 1982-04-29
Granted: 1984-09-25
Abstract: PEELABLE CATHETER WITH HEAT SHRINK RING AND SUTURE SLEEVE     ABSTRACT     An introducer catheter (22) through which a primary device (38) may be inserted having a slidable sleeve (16), which prevents premature disruption of the peelable catheter tube (14) and which also remains in position on the primary device (38) after the introducer catheter has been peeled apart. Also provided is an assembly (10) for the implantation of a peelable introducer catheter (22) the assembly comprising a needle (12), with an introducer catheter tube (14) telescopically disposed over the needle (12) which is provided with rupture means (20); a slidable sleeve (16) telescopically disposed over the needle and introducer cathether tube, which prevents premature disruption of the peelable cathether tube; and a securing means (26) which prevents rotation of the introducer catheter tube (14) relative to the needle (12) during implantation of the catheter (22) in the patient (40).
Patent CA-1172242-A (CA)
Inventor: KENNINGTON KERRY S
IPC: E21B3/04
Filed: 1982-06-28
Granted: 1984-08-07
Abstract: ABSTRACT OF THE DISCLOSURE      A power tong unit is shown which is operable as a closed head or open head unit.  The jaws of the tong unit are rotatable to an extended pipe gripping position from either of opposite directions to make-up or break-out pipe from a single retracted position.  An improved reversal means  controls  the  direction  of  rotation  of  the  jaw between the make-up and break-out positions.
Patent CA-1147130-A (CA)
Title: Guide extracteur de rivet
Inventor: TREMPE FERNAND E
IPC: B25B27/00
Filed: 1982-06-29
Granted: 1983-05-31
Abstract: : Dans les nouvelles voitures 1980 et plus, on sait qu'ils sont munies de rivets servant à fixer les vitres des portes des voitures. Dans la présente invention l'outil est muni d'un guide qui empêche la mèche de dériver vers l'extérieur qui occassionnerait un bris de vitre, suivi d'une piece de metal dentellée qui empèche le rivet de tourner sur lui-même, l'ensemble est muni d'une tige mobile qui permet l'ouverture et la fermeture de l'outil.
Patent CA-1194600-A (CA)
Inventor: YAMADA TAKAAKI
IPC: H03M1/34
Filed: 1982-07-08
Granted: 1985-10-01
Abstract: ANALOG-TO-DIGITAL CONVERTER                ABSTRACT OF THE DISCLOSURE           An analog-to-digital converter for converting an analog input voltage signal to a digital output voltage signal of m upper bits and n lower bits includes at least (2m+n-1) resistors connected in a series circuit to a voltage source for establishing respective reference voltages; at least (2m-1) upper bit voltage comparators for generating outputs indicative of the m upper bits, and having first and second inputs, the analog input voltage being applied to the first inputs and the second inputs being connected to the series circuit at respective intervals defining groups of the resistors; an upper bit encoder receiving the outputs of the upper bit voltage comparators and generating a switch control signal and a digital output voltage signal of m upper bits; at least (2n-1) lower bit voltage comparators for generating outputs indicative of the n lower bits, and having first and second inputs, the analog input voltage signal being applied also to the first inputs of the lower bit voltage comparators; switch elements associated with each of the groups and being responsive to the switch control signal for selectively connecting the second inputs of the lower bit comparators to respective resistors in the associated resistor groups; and a lower bit encoder receiving the outputs of the lower bit voltage comparators and generating a digital output voltage signal of n lower bits.
Patent CA-1190093-A (CA)
Inventor: WINSHIP RALPH D
IPC: F23L9/02
Filed: 1982-08-06
Granted: 1985-07-09
Abstract: METHOD OF REDUCING NOx AND SOx EMISSION ABSTRACT OF THE INVENTION          The method of operating a furnace including the steps of conveying (30) pulverized coal in an air stream towards a furnace (10), separating (34) the stream into two portions (36,38), one being a fuel rich portion (38), and the other being a fuel lean portion (36), introducing (40) the fuel rich portion into the furnace in a first zone, introducing (42,44) air into the first zone in a quantity insufficient to support complete combustion of all of the fuel in the fuel rich portion, introducing (46) the fuel lean portion into the furnace in a second zone, introducing (48) air into the second zone in a quantity such that there is excess air over that required for combustion of all of the fuel within the furnace, and introducing (50) lime into the furnace simultaneously with the fuel, so as to minimize the peak temperature within the furnace, and also minimize the formation of NOx and SOx in the combustion gases.