baber/WOPTO huggingface dataset:
Patent CA-2032127-C (CA)
Title: Method and apparatus for carry-over control in arithmetic entropy coding
Inventor: CHAMZAS CHRISTODOULOS
IPC: H03M7/30
Filed: 1990-12-12
Granted: 1995-04-18
Abstract: In order to employ an output register having a finite number of stages in an arithmetic encoder, it is necessary to provide carryover control, otherwise a register having an impractically large number of stages would be required, i.e., a so-called "infinite" register. The so-called "infinite" output register is emulated by employing a counter and a finite register. To this end, a count is accumulated of sets, i.e., bytes, of consecutive prescribed logical signals of a first kind, i.e., logical 1's, being generated by an arithmetic coding register and possibly modified by a carry indication. The accumulated count is then employed to supply as an output a likenumber of sets including logical signals of a second kind, i.e., logical 0's, or logical signals of the first kind, i.e., logical 1's, depending on whether or not a carry would propagate through the stages of the so-called "infinite" register being emulated.
Patent CA-2032231-C (CA)
Title: Substituted oxophthalazinyl acetic acids and analogs thereof
Inventor: MYLARI BANAVARA LAKHMANA
IPC: A61P25/00
Filed: 1990-12-13
Granted: 1995-08-22
Abstract: Substituted oxophthalazinyl  acetic acids possessing aldose reductase inhibitory activity have the formula       I     wherein A1, A2, B, R1, R2, and R3 are as defined herein, including the pharmaceutically acceptable base salts thereof when R1 is hydrogen.  (Wherein A1 and A2 are indepen-dently N or CH; B is a covalent bond or C=O; R1 is hydrogen or C1-C6 alkyl; R2 is hydrogen, fluorine, chlorine, bromine, trifluoromethyl, C1-C4 alkyl, C1-C4 alkoxy, or C1-C4 alkylthio; R3 is            or          wherein R4 is phenyl optionally indpendently substituted by one, two or three substituents each independently selected from the group consisting of fluoro, chloro, bromo, trifluoromethyl, trifluoromethylthio, C1-C4 alkyl, C1-C4 alkoxy, C1-C4 alkyl-thio,  C1-C4 alkylsulfinyl, C1-C4 alkylsulfonyl  and nitro; with the proviso that when R4 is disubstituted phenyl, the substitution is at the 3 and 4, or the 3 and 5, or the 2 and 5 positions in the phenyl; X is oxygen or sulphur; Y is hydro-gen; or Y forms an indole group with the carbon on the ortho position of the phenyl in R4; or a pharmaceutically acceptable base salt thereof when R1 is hydrogen; with the proviso that when B is a covalent bond, A1 and A2 are each CH).
Patent CA-2045214-C (CA)
Title: Water-and-oil emulsion and process for preparing such emulsion
Inventor: JONES MALCOLM GLYN
IPC: A23L27/60
Filed: 1991-06-21
Granted: 1997-01-14
Abstract: The present invention is concerned with a plastic bi-continuous emulsion containing 5-21 wt. % fat and comprising a continuous aqueous phase, wherein the stress observed at the F-strain when the stress is registered as a function of the strain applied, is 10%, preferably at least 25% higher than the stress observed for the aqueous phase composition at the same strain. The plastic bi-continuous emulsion according to the invention has a very low fat content and combines a number of the advantages of water- and fat-continuous plastic emulsions.  Another aspect of the invention relates to a process for preparing the emulsion according to the present invention, said process comprising the steps of: (a) forming an oil-and-water mixture, (b) homogenizing the oil-and-water mixture under such conditions that an oil-in-water dispersion is obtained wherein the oil-droplets have a volume weighted mean diameter of less than 5 microns, and (c) cooling the oil-in-water under such conditions that coalescence of the oil-droplets is induced.
Patent CA-2046054-C (CA)
Title: Knife rack
Inventor: SCAGLIONE PAUL J
IPC: A47B96/16
Filed: 1991-07-02
Granted: 1995-02-14
Abstract: ABSTRACT OF THE DISCLOSURE     A knife rack including a back plate, on the front face of which is positioned a plurality of laterally spaced apart ribs to form a plurality of vertically disposed channels for the storage of a plurality of knives.  A horizontal retainer bar is mounted across the outer face of the vertical ribs in a position adjacent the upper end of the ribs, so as to retain stored knives in the said channels.  The knife rack is adapted for attachment to the inner side of a face kitchen cabinet door, or on a kitchen wall, or some like surface to which the knife rack may be secured.
Patent CA-2046778-C (CA)
Title: Stud welding tool
Inventor: MEYER KENNETH R SR
IPC: B23K9/20
Filed: 1991-07-11
Granted: 1994-12-13
Abstract: ABSTRACT STUD WELDING TOOL          The next stud is blown under pressure into the receiver after a stud has been welded and as the rod which locates the stud for welding is withdrawn to its fully retracted position the next stud is first subjected to a vacuum which draws the next stud into the collet and then blown fully into the collet.
Patent CA-2049812-C (CA)
Title: Expansible plug for fixing to a solid or hollow building material
Inventor: HAAGE MANFRED
IPC: F16B13/12
Filed: 1991-08-23
Granted: 1995-04-04
Abstract: The expansible plug for fixing an element or frame member on solid or hollow building material, has a plug shank (1) having a plurality of expansion discs (3,4) arranged one after the other along the plug shank (1).          The expansion discs (3,4) are provided with eccentric bores (12,13) located so that, without the fixing screw (23) inserted, the bores (12,13) of adjacent discs (3,4) are noncoaxial or staggered with respect to one another and overlap one another and so that the overlapping bores (12,13) form a constricted screw hole (15) through the plug shank (1). When a fixing screw (23) is screwed into the expansible plug the expansion discs (3,4) are displaced laterally so that the bores (12,13) in the expansion disks have a coaxial relationship and the expansion disks (3,4) are displaced laterally outwards from the plug shank to secure the expansible plug in a hole in which it is located. The expansion discs (3,4) are preferably attached to joining members (9,10) on opposite sides of the plug shank and every second successive expansion disc (3,4) is attached to a common resilient joining member (9,10).
Patent CA-2051831-C (CA)
Title: A digital line card for interfacing a remotely located digital telephone to a central office system
Inventor: CONFORTI JOSEPH A
IPC: H04M3/60
Filed: 1991-09-19
Granted: 1999-05-25
Abstract: A digital line card for interfacing a remotely located digital telephone to a central office system by a two-wire connection is disclosed.  The digital line card consists of a line interface connected to the two-wire connection.  The line interface provides a full duplex transmission link with the remotely located digital telephone over the two-wire connection.  A buffer is connected between the line interface and the central office system.  The buffer converts data between the line interface and the central office system.  The line card further comprising a protocol controller connected to the line interface.  The protocol controller performs a packet protocol for communications with the remotely located telephone.  To complete the line card, there is provided a processor connected to the protocol controller and to the central office system, under the direction of the central office system, the processor controls the operation of the digital line card and, through the protocol controller means, communicates with and controls the remotely located digital telephone.
Patent CA-2053773-C (CA)
Title: Tape take-away and moistening system
Inventor: SALANCY WILLIAM A
IPC: B65C9/18
Filed: 1991-10-21
Granted: 1995-07-04
Abstract: The improved tape advancing system includes a conveyor having a moving surface, a motor having an output shaft, means coupled to said motor for driving said moving surface.  A frame is locate opposite said moving surface and includes a plurality of wheel assemblies rotatively supported by said frame for assuring positive communication between the tape shaft carrying a first and second wheel fixably mounted to respective ends of the shaft and are spaced apart a distance such that said wheels will contact an edge portion of the tape which has not been printed upon by an associated postage meter.
Patent CA-2057748-C (CA)
Title: Pulley encased tensioner and system
Inventor: DEC ANDRZEJ
IPC: F16H7/12
Filed: 1991-12-16
Granted: 1995-10-03
Abstract: A tensioner with a pulley rotatably mounted to a pivot arm that is biased with a compression spring.  The pulley is generally tube-pan shaped and defines an annular space where the compression spring is located.  A belt drive system of the automotive camshaft type that includes the tensioner for maintaining operative belt tension.
Patent CA-2059882-C (CA)
Title: Sulfonylureas
Inventor: MEYER WILLY
IPC: C07D331/04
Filed: 1992-01-23
Granted: 2005-10-25
Abstract: N-Phenylsulfonyl-N'-pyrimidinyl-, -N'-triazinyl- and -N'-triazolylureas and -thioureas of formula I   (see formula I) in which X is oxygen, sulfur, SO or SO2; W is oxygen or sulfur; R1 is hydrogen or methyl; R2 is hydrogen, fluorine, chlorine, bromine, iodine, (X)n R3, NO2, NR4R5, -C.ident.CR6, (see formula II) C.ident.CR6, or cyano; n is the number 0 or 1; R3 is C1-C4alkyl or C1-C4alkyl which is substituted by 1-4 halogen atoms, C1-C3alkoxy or C1-C3alkylthio; or C2-C4alkenyl or C2-C4alkenyl which is substituted by 1-4 halogen atoms; R4 is hydrogen, CH3O, CH3CH2O or C1-C3alkyl; R5 is hydrogen or C1-C3alkyl; R6 is hydrogen, methyl or ethyl; R7 is hydrogen or methyl; Z is (see formula III) or (see formula IV) ; E is methine or nitrogen; R8 is C1-C4alkyl, C1-C4alkoxy, C1-C4haloalkoxy, C1-C4haloalkyl, C1-C4haloalkylthio, C1-C4alkylthio, halogen, C2-C5alkoxyalkyl, C2-C5alkoxyalkoxy, amino, C1-C3alkylamino or di(C1-C3alkyl)amino; R9 is C1-C4alkyl, C1-C4alkoxy, C1-C4haloalkoxy, C1-C4haloalkylthio, C1-C4alkylthio, C2-C5alkoxyalkyl, C2-C5alkoxyalkoxy, C2-C5alkylthioalkyl or cyclopropyl; R10 is hydrogen, fluorine, chlorine, methyl, trifluoromethyl, CH3O, CH3CH2O, CH3S, CH3SO, CH3SO2 or cyano; R11 is methyl, ethyl, CH3O, CH3CH2O, fluorine or chlorine;  R12 is methyl, ethyl, CH3O, CH3CH2O, fluorine or chlorine; R13 is C1-C3alkyl; and R14 is C1-C3alkyl, C1-C3alkoxy, chlorine or OCHF2; and the salts of these compounds;  with the provisos that E is methine if R8 is halogen; and E is methine if R8 or R9 is OCHF2 or SCHF2, and the salts of these compounds with amines, alkali metal or alkaline earth metal bases or quaternary ammonium bases have good pre- and postemergence selective herbicidal and growth-regulating properties.
Patent CA-2068209-C (CA)
Title: Immobilization of incinerator ash toxic elements in an environmentally safe soil cement composition and method of manufacture
Inventor: CASEY WILLIAM W
IPC: C04B28/04
Filed: 1990-12-07
Granted: 1995-11-07
Abstract: A composition, suitable for use as a base in the construction of roads, and other areas, is formulated from an ash-aggregate comprising municipal solid waste incinerator ash, MSWIA, mixed with an aggre-gate material. Upon the addition of cement, compac-tion, and curing, a volumetrically stable solid is formed. All particles greater than 3/8" are removed from the ash-aggregate material prior to the addition of cement. The stable solids immobilize heavy metals in the MSWIA. Incinerator ash, sufficiently small to fit through two inch screen (1) passes into ash bin (3). Belt (5) carries the ash (4) toward mixing chamber (10). This feeds on to screen (26). Streams (34) and (50) are com-bined in bin (54) and cement (60) is added. The combi-nation is mixed, (72) and is ready for transport.
Patent CA-2070564-C (CA)
Inventor: ATKINSON MITCH
IPC: E01H5/06
Filed: 1992-06-05
Granted: 1995-01-03
Abstract: ABSTRACT OF THE DISCLOSURE     A swivel design for a wear shoe is described which provides support to apparatus cantilevered from a vehicle. This effectively reduces wear to the contacting surface by distributing the wear more evenly. To accomplish this objective the wear shoe is mounted to the supported structure by a swivel joint which allows full freedom of movement. During use the wear shoe tilts and rotates on the swivel to maintain the wear surface of the shoe in facing relation to the road surface.
Patent CA-2073536-C (CA)
Inventor: ROFFMAN JEFFREY H
IPC: G02C7/04
Filed: 1992-07-09
Granted: 2003-12-16
Abstract: A multifocal refractive lens to focus light on the retina of the eye and method of making. The lens is comprised of a plurality of segments, alternating segments having different optical powers. At least for distance vision and another for near. The lens of the invention does not require orientation to produce adequate for and near vision and normal steroscoptic effect. One or both of the segments having the optical powers may have aspherical lens surface. Preferably, the lens has at least one aspherical lens surface and the segments are divided by an arcuate path going from the center of the lens to edge. Such a lens is manufactured by taking lens molds and cutting the molds from the edge through the center to the opposite edge along a predetermined path.        The molds are cut so that the segments produced are interchangable and can be fitted together to make a mold that can produce the multifocal refractive contact lens by molding.
Patent CA-2074448-C (CA)
Title: Top-entry check valve having retainer ring
Inventor: SCARAMUCCI JOHN PHILIP
IPC: F16K15/03
Filed: 1992-07-22
Granted: 1997-01-14
Abstract: A top-entry  check valve  having  a  seat,  cage,  disc  and removable bonnet utilizes a retainer ring to prevent movement of the seat, cage and disc in the downstream direction.  An annular shoulder in the valve body prevents movement of the seat, cage and disc in the upstream direction.  The disc has a hinge pin which is cradled in hinge pin supports of the cage to hold the disc in place.  The retainer ring is secured in the valve body by fitting into a transverse groove formed in the inside surface of the valve body.  Removal of the bonnet allows access to the valve chamber for replacement of the seat, cage, disc or retainer ring.
Patent CA-2085136-C (CA)
Title: Method for inhibition of retroviral replication
Inventor: KUN ERNEST
IPC: A61K31/365
Filed: 1992-04-10
Granted: 1997-03-18
Abstract: A method for inhibition of retroviral replication by inactivation of the enzyme adenosine diphosphoribosyl transferase. The method is useful for prevention and treatment of retroviral infections, including HIV. The inhi-bition of the viral replication is achieved by administrating to a mammal susceptible to or infected with a retrovirus, drugs which speci-fically inhibit poly-ADP-ribosylation activity of adenosine diphosphoribosyl transferase.
Patent CA-2085147-C (CA)
Title: Process for preparing amines by catalytic hydrogenation of nitriles
Inventor: DECKERS GREGOR
IPC: C07C209/48
Filed: 1992-12-11
Granted: 1999-08-24
Abstract: The present invention relates to a process for preparing amines by the catalytic hydrogenation of nitrites in the presence of a nickel-containing support catalyst. The support catalyst contains Mg and Ni in coprecipitated form, Mg and Ni in a molar ratio of (0.0075 to 0.075):1 and 17 to 60 g of a water-insoluble support per mole of nickel. 65 to 97% of the BET total surface area of the support catalyst is formed by pores having a radius r p ~ 2.5 nm.
Patent CA-2087380-C (CA)
Title: Replaceable adaptor for a hot water tank resistive heating element
Inventor: LESAGE CLAUDE
IPC: H05B3/82
Filed: 1993-01-15
Granted: 1996-10-15
Abstract: An adaptor assembly for securing a resistive electric heating element to a hot water heating tank.          The adaptor assembly comprises a hollow hub sealingly securable with a hole in a hot water tank outer wall with a connecting portion of the hub extending outwardly of the outer wall.  At least two opposed retention members are provided in a connecting portion of  the hub to receive and removably retain an adaptor plate.  The adaptor plate is connectable to a resistive heating element bracket by fasteners to secure the bracket to the plate with a resistive element of the bracket extending in the tank through the hub.  The adaptor  plate  is secured to the hub by interference the retention members of the hub and a seal is disposed between the bracket and the hub and sealingly engaged by the pressure applied by the fasteners.
Patent CA-2096482-C (CA)
Title: Process for the preparation of fire retardant thermoplastic compositions
Inventor: AUGUSTIN MADELEINE
IPC: B29C47/36
Filed: 1993-05-18
Granted: 2001-08-14
Abstract: Flame-resistant thermoplastic compositions based on polyamide comprising a mixture of polyamide(s), of Sb2O3 and/or of melamine cyanurate and of Mg(OH)2. They may contain glass fibres, inorganic fillers and/or additives such as colorant(s), lubricant(s), stabilisers against heat or light, impact strength improvers, plasticisers and antioxidants. They are prepared by mixing constituents in powdered form, introducing the mixture with the polyamide into an extruder and incorporating glass fibres into the molten material. These compositions are employed especially for the production of moulded or extruded objects, of films or of composite materials exhibiting an excellent fire resistance (V0 under 1.6 mm) and good mechanical characteristics.
Patent CA-2100524-C (CA)
Inventor: SNIDER WILLIAM DOUGLAS
IPC: B41M1/30
Filed: 1993-07-14
Granted: 2003-09-09
Abstract: A polyester film can be dyed by coating the film with a layer of a dye mixture which is a suspension of at least one disperse dyestuff in a solution of a thickener in water and which has a viscosity of no more than 500 centipoise, preferably 5-50 centipoise, at ambient temperature, followed by heating to cause the dyestuff to migrate from the layer into the film. The coating process is preferably reverse gravure printing. The process can be used to prepare films which contain one or more dyestuffs in one surface region of the film and one or more different dyestuffs, for example an ultraviolet absorber, in the other surface region of the film. The dyed films show good resistance to fading when exposed to light and are useful for example as automobile window films.
Patent CA-2106754-C (CA)
Inventor: MISAWA TOSHIAKI
IPC: E21B44/00
Filed: 1993-01-20
Granted: 2001-05-08
Abstract: The present invention relates to a positioning device capable of positioning a member in any direction with a high degree of resolution by using a hollow type harmonic drive mechanism, and to a drilling-direction control device for a drilling system utilizing the positioning device. The device of the present invention is mainly constituted by a double eccentric mechanism section (10). A first annular member (12) is rotatably supported by a circular inner circumferential surface (11a) of the cylindrical member (11) of this mechanism section, and a second annular member (13) is rotatably supported by a circular inner circumferential surface (11b) of the first annular member. Further, the circular inner circumferential surface (12b) of the first annular member is formed in a position deviated by a distance "e" relative to the center of the cylindrical member, and the circular inner circumferential surface (13b) of the second annular member is also formed in a position deviated by the distance "e" relative to the center of the circular inner circumferential surface of the first annular member. It is possible to move the center (C) of the circular inner circumferential surface (13b) of the second annular member in any direction within a range of a predetermined radius by relatively rotating these first and second annular members by using hollow type harmonic drive mechanisms (8, 9).
Patent CA-2108274-C (CA)
Inventor: BROWNE GEORGE WILLIAM
IPC: B23K9/04
Filed: 1992-04-15
Granted: 2000-07-04
Abstract: An apparatus for applying weld metal for the purpose of hard-facing of metal plates (10) and a method of operation of the apparatus. A metal plate (10) is moved through an apparatus in which there are weld heads (43) including welding electrodes (49). The metal plate has a slight induced convexity in the region of the welding heads so that an accurate distance is maintained between the welding electrode and the surface of the metal plate. The convexity is formed by a wheel assembly (31) under the plate and the wheel assembly may also include cooling means (38). The advantage of the flat plate system is that long lengths of plate may be hard-faced.
Patent CA-2109561-C (CA)
Inventor: TATSUMI SATOSHI
IPC: H03H19/00
Filed: 1993-11-19
Granted: 1997-09-23
Abstract: A switched capacitor circuit includes a first capacitor connected between first and second nodes, a second capacitor connected between the first node and an intermediate node, and a third capacitor connected between the intermediate node and ground. A group of m parallel circuits are connected between the intermediate node and the second node. Each of the m parallel circuits has a fourth capacitor and a switch for coupling it to ground or to the second node, depending on a corresponding one of m bits of a N-bit gain control signal. (N-m)parallel circuits are connected between the first and second nodes, each including a fifth capacitor and a switch for charging it, depending on one of (N-m) bits of the N-bit gain control signal. A first sampling switch couples an input voltage to the first node in response to the first phase of a two-phase clock signal, and couples the first node to ground in response to the second phase. A second sampling switch provides charging of a sixth capacitor, connected to the second node, in response to the first phase, and discharges energy from it to an output terminal of the switched capacitor circuit in response to the second phase.
Patent CA-2120483-C (CA)
Inventor: CHAPMAN JOHN EDWARD
IPC: F16K1/24
Filed: 1992-10-02
Granted: 2002-07-09
Abstract: A butterfly valve comprises: an elongate valve body (1) having a flange (2) at one end, a valve plate (a), operable between an open and closed position, forming a seal with the said flange (2) in the closed position, and a valve plate support structure in-cluding: a location cam (14) scated within an abutment plate housing (10), and operable to effect movement of the valve plate (4); a shaft (5), operable to effect movement of the cam by rotational movement of the shaft: and an abutment plate (12), formed with-in the abatment plate housing (10); wherein rotational movement of the said shaft (5) will result in independent rotational move-ment and linear movement of the said location cam (14) within the abutment pinte housing (10) and operable to effect independ-ent rotational movement and linear movement of the valve plate (4).
Patent CA-2124124-C (CA)
Inventor: GNAUCK ALAN H
IPC: H04B10/02
Filed: 1994-05-24
Granted: 1999-12-07
Abstract: The present invention provides an apparatus and method for achieving bit rate distance products on the order of 200 Tbits/skm in non-soliton optical communication using optical phase conjugation. The apparatus and method utilize phase conjugation and adjustments of in-line amplifier number, spacing, and/or output power in order to compensate for the interaction between first order dispersion and fiber nonlinearity dispersion effects in an optical fiber span. The present invention provides additional techniques for adjusting system parameters, such as dispersion-length products of first and second portions of the fiber span, in order to compensate for changes in first order dispersion resulting from non-zero second order dispersion. The method and apparatus also provide an improved multi-channel optical phase conjugation system design.