baber/WOPTO huggingface dataset:
Patent CA-1164592-A (CA)
Inventor: SWEET ANTHONY W
IPC: H04M19/00
Filed: 1981-02-12
Granted: 1984-03-27
Abstract: ABSTRACT OF THE DISCLOSURE The direct current line feed for a telephone sub-scriber's line is derived from a variable voltage source connected to the line.  In one case, the source is series connected in one-leg of the line while in the other case it is connected across the line.  In the first case there is a constant current source across the line while in the second case the voltage source is a constant current device.  In both cases a pair of matching resistors is connected across the line with the centre -tap grounded to provide a high resistance balanced termination for the line.  In both cases a high impedance monitor is connected across the line to monitor the voltage conditions on the line, and this, via a control circuit controls the voltage source and the separate constant current device if provided.  This enables line voltage to be adjusted to take account of line length without introducing undesirably large dissipation.
Patent CA-1153821-A (CA)
Inventor: MENEZES WILLIAM A
IPC: G11B27/10
Filed: 1981-03-19
Granted: 1983-09-13
Abstract: ABSTRACT OF THE DISCLOSURE         An apparatus and a method are provided for detecting discontinuities in a sequence of time code addresses recorded on a tape, such as a video tape, which also has control pulses recorded serially along its length to synchronize the motion of the tape relative to transducer heads which read and write information signals on the tape.    The apparatus and method of this invention read the current time code address from the tape, count the control pulses read as the tape moves, establish a known relationship bet-ween the current time code address and the count of control pulses, so that the count represents a counted tape address, and compare the current time code address with the counted tape address for producing a non-compare signal in the event of a difference between these two compared values.  A time code discontinuity signal is generated when a predetermined number of successive comparisons result in non-compare signals, indicating that the time code addresses read from the tape have not varied sequentially in a uniform relation to the control pulses.  The value of the current time code address and the counted tape address at the time a discon-tinuity is detected can be used to define both the location and the magnitude of the discontinuity or to enable accurate calculation of the distance between two time code addresses each located on an opposite side of such a discontinuity.
Patent CA-1150600-A (CA)
Inventor: MARCHILDON JACQUES
IPC: A01G23/08
Filed: 1981-04-07
Granted: 1983-07-26
Abstract: ABSTRACT        A mobile tree harvester of the type having a boom reciprocally mounted in a box section and stripper type delimber means associated therewith and means mounting the boom on the vehicle whereby the boom can be raised and lowered while it remains horizontal to respective operative and transport positions.          The box section of the boom is pivotally connected to a lever and associated with such pivotal connection is a lock means preventing pivotal movement of the boom thereon when the boom is in its raised position.
Patent CA-1169915-A (CA)
Inventor: PEREZ STEVEN R
IPC: G03G15/09
Filed: 1981-04-30
Granted: 1984-06-26
Abstract: ABSTRACT   An electrostatographic development and cleaning system employing electrically insulating carrier particles. The carrier particles comprise a core having magnetic or magnetically-attractable properties which is coated with a polyvinyl acetal. The coated carrier particles have negative triboelectric charging properties and are particularly useful in development systems employing negatively charged photoconductive surfaces. The carrier particles provide efficient removal of residual toner deposits from a photoreceptor surface after a copying operation.
Patent CA-1148006-A (CA)
Inventor: KOESTER WALDEMAR
IPC: E01D19/06
Filed: 1981-05-04
Granted: 1983-06-14
Abstract: ABSTRACT OF THE DISCLOSURE         In the case of an apparatus for bridging expansion joints in bridges and similar structures which is provided with one lamella, or with several lamellae, positioned in the longitudinal direction of the slit of the joint, the lamellae are braced against the edges of the joint.  Partial traverses connecting lamellae with each other and with the edges of the joint promote favorable distribution of the vertical forces, stable support for lamellae, and simultaneous control of the distance.  Partial traverses are always rigidly connected with one lamella or with one edge of the joint and with at least one neighbouring lamella via elastomer supporting bodies, stressed by shearing forces, in such a manner that they form an elastic supporting chain which extends from one edge of the joint to the other.  In order to brace the lamellae in the case of larger joints, there are cross beams provided --in addition to partial traverses -- whose ends have sliding support in the opposite joint edges.  Partial traverses are always positioned in the aperture in one joint edge or in one or several lamellae or in the aperture in at least two lamellae.
Patent CA-1163382-A (CA)
Inventor: HEIJWEGEN CORNELIS P
IPC: B03D1/00
Filed: 1981-05-06
Granted: 1984-03-06
Abstract: "Process of treating dust containing zinc and lead and derived in an iron or steel making process"           "ABSTRACT OF THE DISCLOSURE"     Zinc and lead are separated together out of dust derived from a gas-cleaning installation in iron or steel making by a flotation-separation treatment.  In order economically to provide a good separation of these metals and to leave a residue which is re-usable in an ore-preparation process in the iron and steel industry, the flotation-separation treatment is at a pH of 7 to 9 and is effective to achieve a separation, according to size of the dust particles, of a floated component in which the zinc and lead are concentrated and a non-floated component which is suitable for re-use.
Patent CA-1166883-A (CA)
Inventor: RANZ ERWIN
IPC: G03C7/30
Filed: 1981-05-26
Granted: 1984-05-08
Abstract: A photographic recording material and its use for the production of images ABSTRACT OF THE DISCLOSURE    A photographic recording material contains in a silver halide layer an emulsion mixture of at least one light sensitive sliver halide and a comparatively non-light sensitive silver salt and in a second layer, which is in waterpermeable arrangement, an antifogging agent or a precursor compound thereof.
Patent CA-1176920-A (CA)
Inventor: CHAPMAN LLOYD R
IPC: B01D53/86
Filed: 1981-06-05
Granted: 1984-10-30
Abstract: ENHANCED OXIDE WHISKER GROWTH ON COLD-ROLLED   ALUMINUM-CONTAINING STAINLESS STEEL FOIL            Abstract of the Disclosure Alumina whiskers are grown on cold-rolled Fe-Cr-Al alloy foil by a two-step oxidation treatment.          A bare metal surface is initially oxidized by heating while exposing to a predominantly inert atmosphere containing 0.1 volume percent oxygen or less.  There-after, the surface is further oxidized by heating while exposing to air to grow the whiskers.  In a preferred embodiment, whisker-covered foil is coated with a catalyst-bearing alumina layer and-suitably wound into a structure for use in an automotive catalytic converter.
Patent CA-1165038-A (CA)
Inventor: LINDNER CHRISTIAN
IPC: C08L27/00
Filed: 1981-06-12
Granted: 1984-04-03
Abstract: NOTCHED IMPACT RESISTANT VINYL CHLORIDE POLYMERS       Abstract of the Disclosure The invention relates to notched impact resistant thermoplastic moulding compositions obtained from 1.  1 to 99 % by weight, preferably 10 to 95 % by weight, especially 70 to 98 % by weight, of a thermoplastic vinyl chloride polymer, and 2.  99 to 1 % by weight, preferably 90 to 5 % by weight, especially 2 to 30 % by weight, of a particulate graft copolymer consisting of a nucleus (a) of a highly crosslinked diene rubber,  a first covering (b) of a crosslinked acrylate rubber, and a second covering (c) of a polymer or copolymer of resin-forming monomers, viz. Styrene, .alpha.-methylstyrene, acrylonitrile, meth-acrylonitrile, acrylic acid esters and methacrylic acid esters.            Le A 20 408
Patent CA-1147560-A (CA)
Inventor: BOONE JERRY C
IPC: A01D34/14
Filed: 1981-06-26
Granted: 1983-06-07
Abstract: JOINT FOR SECURING A SICKLE DRIVE PIN     ABSTRACT OF THE DISCLOSURE         A pivot joint between a crop cutting sickle (13) and an offset drive arm (12) includes a pivot pin (37) which is connected to the sickle by antifriction bearings (23) and to the sickle drive arm (12) by a tapered wedging sleeve (43).  Both ends of the pin (37) are threaded to receive nuts (57,58) which, when tightened, insure a tight joint which does not become loose when subjected to the reversing shock loads encountered in a crop cutting operation.
Patent CA-1172793-A (CA)
Inventor: EWEN JAMES H
IPC: C08G18/65
Filed: 1981-07-20
Granted: 1984-08-14
Abstract: ABSTRACT OF THE DISCLOSURE Elastomeric polyurethane-polyurea polymers are disclosed that are derived from the reaction of organic polyisocyanates with A. primary hydroxyl polyols having a functionality of 2 to 4 and a molecular weight from 1500 to 12000, and B. extender mixtures comprised of 1.) an aromatic diamine wherein at least one of the positions ortho to each amine group is substituted by a lower alkyl group, and 2.) a low molecular weight diol, provided that the aromatic diamine comprises from 5 to 45 percent by weight of the extender mixture and the balance comprises the diol.    The polymers find particular utility in the preparation of reaction injection molded parts, partic-ularly, automotive parts because of their excellent flexural modulus, tensile,and tear properties.
Patent CA-1156596-A (CA)
Inventor: AKITA SHINJI
IPC: B23Q7/00
Filed: 1981-08-28
Granted: 1983-11-08
Abstract: WALKING BEAM     Abstract of the Disclosure.    Disclosed is a walking beam and more particularly its driving mechanisms whereby a material placed on a plurality of stationary beams for transfer, e.g., a steel product such as a steel pipe or round bar is raised from below, moved forward and lowered again onto the stationary beams by a plurality of transfer beams and this process is repeated to effect the transfer of the material.  Each of the driving mechanisms includes a first link for causing the transfer beam to make a circular motion and the first link is rotatable about a supporting shaft with a radius of rotation ?.  The supporting shaft is fitted in the forward end of a second link and is rotatable about a main rotating shaft with a radius of rotation 2?.  Mounted also on the support-ing shaft is a first gear which is rotatable along with the first link and the first gear is in mesh with a second gear mounted on the main rotating shaft.  The driving of the second gear and the second link is controlled selectively such that one of them is driven and the other is locked or both of them are driven and in this way the feed length of the transfer stroke of the transfer beam is changed to 2?, 4? or 6?.
Patent CA-1177865-A (CA)
Inventor: KIMBLIN CLIVE W
IPC: H01H33/60
Filed: 1981-10-30
Granted: 1984-11-13
Abstract: 9                   49,139 ABSTRACT OF THE DISCLOSURE An electrical switch for efficient, high contin-uous current carrying operation, with at least one movable contact for effecting current interruption.  The ambient pressure within  the  volume  defined by  the  electrical switch body is maintained at or is reducible during con-tact  opening to between  10-1 to  102  Torr to minimize contact  erosion.   A preferred  electrical  switch  is  a hermetically sealed, low voltage d.c., device for shunting an electrolyte  cell.   The  sealed  switch  module  has  a reduced pressure atmosphere of inert fill gas at a pres-sure of from 10-1 to 102 Torr.
Patent CA-1196353-A (CA)
Title: Tennis ball
Inventor: HOFFMAN ALLAN C
IPC: A63B39/04
Filed: 1981-11-26
Granted: 1985-11-05
Abstract: TENNIS BALL            ABSTRACT      An improve tennis ball having an integrally molded valve  in  the  sidewalls  thereof  for  assuring  constant pressure within the ball and, therefore, constant playing characteristics.   The valve is characterized by being of unitary  construction  and  having  a  normally open  and  a normally closed  portion.   The valve  is constructed of a tapered deformable elastomeric material  such  that the normally closed portion seals the ball against low initial internal pressures sufficiently to allow the  internal pressure  within  the  ball  to  deform  the normally opened portion into wedged engagement with the passageaway through the  wall  of  the  ball  containing  the  valve.    As  thus configured, increased internal pressure wedges the normally opened portion increasingly tightly into the passageway to provide a tight seal which is resistant to opening  upon impact  of  the  ball.    The  normally  opened  portion  is provide with knife edges and a polished  surface on  the interior to provide leak-free sealing.  The fabric covering of the  tennis ball  is made  of a gas-permeable  material disposed over the valve opening which is further protected by a gauze  filter  between  the  opening  and  the  covering fabric.   The ball can be pressurized to predictable bounce characteristics regardless of altitude and temperature by placing the ball within a sealed container at the play site and  then  reducing  the  volume  of  the  container  a  fixed amount.      Also, a method of making the valved tennis ball so as to  preserve  the  automatic  pressurization  characteristics thereof.  Two core halves are first prepared -- one having the valve molded therein.  The interior sealing lips of the valve are then bonded together and the balance of the ball completed.
Patent CA-1178040-A (CA)
Inventor: BORCHARDT JOHN K
IPC: C09K8/588
Filed: 1982-01-05
Granted: 1984-11-20
Abstract: Abstract of the Disclosure This invention provides novel aqueous fluid com-positions which comprise a synergistic mixture of two classes of water dispersible or soluble polymers, i.e.          (1) synthetic polymeric viscosifier and (2) polycationic organic polymer.  These compositions are uniquely adapted for use in enhanced oil recovery.  Addition of the poly-cationic organic polymer reduces the solution viscosity, increases the injectivity of the aqueous solution into low permeability formations.  This reaction also reduces the shear degradation of the polymers during pumping, injection through the perforations, and during the period of rela-tively rapid fluid movement as the solution moves through an earthen or subterranean formation in the important zone within about a ten foot radius around the well bore.  Once in an earthen formation, the polycationic organic polymer is rapidly adsorbed from the solution resulting in an in-crease in solution viscosity and improving the mobility ratio and also resulting in enhanced and/or increased oil recovery.
Patent CA-1170319-A (CA)
Inventor: STEWART ROGER G
IPC: H03K19/096
Filed: 1982-01-27
Granted: 1984-07-03
Abstract: RCA 75,990 GATED PARALLEL DECODER Abstract of the Disclosure The decoder includes a plurality of input signal responsive transistors having their conduction paths connected in parallel between a node and a point of reference potential.  These transistors, when turned-on, tend to clamp the node to the reference potential.  A controllable load is connected between a second voltage and the node for providing when,enabled by an external control signal and in the absence of an internally generated inhibit signal, a conduction path to charge the node towards the second voltage.  The inhibit signal, generated by an inhibit network responsive to the node voltage, inhibits conduction via the charging conduction path of the controllable load when the node voltage is at, or close to, the second voltage.
Patent CA-1142949-A (CA)
Inventor: FELDER LOUIS
IPC: C07C49/84
Filed: 1982-02-11
Granted: 1983-03-15
Abstract: ABSTRACT        Novel aromatic-aliphatic ketones of the formula:                                               (I) wherein Ar represents an aryl or heterocyclic radical, R1, R2 and R3 are monovalent aliphatic, cycloaliphatic or araliphatic radicals are disclosed, which are useful as sensitizers for the photopolymerization of unsaturated compounds and for the photo-chemical crosslinking of polyolefins.
Patent CA-1196614-A (CA)
Inventor: LEDUC ARTHUR J
IPC: A62B1/10
Filed: 1982-03-30
Granted: 1985-11-12
Abstract: ABSTRACT       I have conceived of an invention which essentially provides means for freely floating the respective elevation of the free end of a lifeline by a mechanical means which does not require the oral direction of a workman to third parties on the ground to control the relative free length of the lifeline irrespective of worker elevation.  The lifeline system of the invention incorporates as operative elements, a rotatably and lockable spool, a length of lifeline which is wound onto the spool, a means for biasing and for control of the spool rotation, that provides the function of allowing the spool to rotate and also to play out at a slow rate, so that the workman himself may on the one hand regulate the relative free end position of the lifeline simply by pulling and releasing the lifeline slowly.  Thus, if the lifeline length is quickly moved or attempted to be moved from one length to another, the spool rotation is stopped or arrested but then allowed to rotate slowly under control (frictional or braking) so as to inhibit further playout of the lifeline that is faster than a predetermined rate of about 2 feet per second. This effectively prevents sudden stops and injury while permitting a controlled decent to the ground of a worker who has fallen from a working elevation.
Patent CA-1175429-A (CA)
Inventor: LESHER GEORGE Y
IPC: A61K31/44
Filed: 1982-04-27
Granted: 1984-10-02
Abstract: ABSTRACT OF THE DISCLOSURE l-R-3-(NB)-5-PY-6-Q-1H-pyrazolo[3,4-b]pyridilles or pharmaceuti-cally-acceptable acid-addition salts thereof which are useful as cardiotonics, are prepared by reacting a l-R-5-PY-6-Q-1H-pyrazolo[3,4-b] pyridin-3-amine with a lower-alkanoic acid and reducing agent to produce 1-R-3-(NB)-5-PY-6-Q-1H-l-pyrazolo[3,4-b]pyridine (I) where NB is NHR1 or NRlR2, with a mixture of formic acid and formaldehyde to produce I where NB is N(CH3)2 or with a lower-acylating agent to produce I where NB is NHAc and, if desired, reacting the 3-(NHAc) compound with a reducing agent to prepare the corresponding 3-NHR1 compound, where R is lower-alkyl, lower-hydroxyalkyl, lower-acyloxy-(lower-alkyl) or lower-alkoxy-alkyl, Q is hydrogen or lower-alkyl, PY is 4- or 3-pyridinyl or 4- or 3-pyridinyl having one or two lower-alkyl substituents, and NB is selected from NHR, NR1R2 or NHAc whcre R1 and R2 are each lower-alkyl and Ac is lower-acyl.  Also shown are cardiotollic compositions and method for increasing cardiac con-tractility using said compounds or salts.
Patent CA-1177762-A (CA)
Inventor: CHAMPLEBOUX JACQUES
IPC: E21B33/127
Filed: 1982-05-21
Granted: 1984-11-13
Abstract: ABSTRACT              Descriptive Summary A device for the temporary plugging of pipes, of the type consisting of a flexible sleeve (1) expandable under heavy internal pressure and -the rubber wall of which is reinforced by at least one pair of resistant layers (5) made of cables, embedded in the wall and the cables of which are woven from one layer into the other forming, with respect to the generatrices, angles smaller than 30°; a device characterized by the fact that the wall of the sleeve contains, in addition, at least one pair of protective layers (8) installed radially inside the resistant layers (5) and consisting of neighboring cables with a diameter at least twice as small as that of the cables of the resistant layers, the cables of the protective layers being woven from one layer into the other and forming with the generatrices angles not larger than the angles of the resistant cables.
Patent CA-1203498-A (CA)
Inventor: JAGGI ERNST
IPC: C25C3/14
Filed: 1982-06-14
Granted: 1986-04-22
Abstract: ABSTRACT           A device for controlled batch feeding of fluidizible particulate material from a silo is particularly suitable for supplying alumina from a day's storage silo to the break in the crust on a fused salt electrolytic cell for producing aluminum; the device has the advantage of being of simple design and having no mechanically moving parts subject to adverse effects of the cell atmosphere, heat and dust and being largely maintenance free; an angled feed pipe com-municates with a silo discharge outlet; an angled charge containment pipe communicates with the feed pipe inter-mediate its ends and forms an angle with respect to the feed pipe; a discharge pipe communicates with a discharge end of the containment pipe; and a supply of compressed air communicates with the containment pipe adjacent a closed end to eject material from the containment pipe to the discharge pipe; by briefly opening a control valve at regular intervals, compressed air is forced into the containment pipe and particulate material lying there is ejected.
Patent CA-1175874-A (CA)
Inventor: LUGSCHEIDER WALTER
IPC: F27D11/08
Filed: 1982-06-23
Granted: 1984-10-09
Abstract: ABSTRACT OF THE DISCLOSURE:            A plasma melting furnace includes a furnace body, a cover-ing cap, one or more electrodes penetrating the bottom of the furnace body, and at least three plasma burners pene-trating; the furnace wall or the covering cap and arranged so as to be inclined towards the bottom. In order to a-chieve a high melting performance with a simultaneously low energy consumption, charging openings are provided in the covering cap for the continuous melting of small-sized material, such as light scrap and iron sponge.          Their vertical axes are located in a plane extending through the annular symmetry of the normal projection of the axes of two neighboring plasma burners as well as be-tween two vertical planes each extending perpendicular to the normal projections of the individual burner axes. One of the two planes is laid through the point of impact of the direct plasma jets on the melt and the second plane extends parallel thereto at the distance of a third of the length of the projections of the direct plasma jets from their exit out of the burners as far as to their point of impact.
Patent CA-1185903-A (CA)
Inventor: KRIVEC BERT
IPC: B01D25/172
Filed: 1982-06-29
Granted: 1985-04-23
Abstract: ABSTRACT OF THE INVENTION         The chain-carried pawls which are to shift the plates on the rails of a filter press in successive order are provided with roller weights which ride on upper and lower tracks and provide the improved shifting of the plates and support of the lower runs of the chains.
Patent CA-1211367-A (CA)
Inventor: MEIER WERNER
IPC: B01D53/18
Filed: 1982-07-29
Granted: 1986-09-16
Abstract: ABSTRACT OF THE DISCLOSURE           The regular packing element is formed by layers of inclined deflecting elements.  The deflecting elements are arranged in criss-crossing relation to each other and provide continuous flow channels which are open at both ends.  In addition, the flow channels are open laterally to the flow channels of the adjacent layers of the deflecting elements.          The packing provides for an improved and accelerated mass transfer between two media flowing through the packing in countercurrent.