baber/WOPTO huggingface dataset:
Patent CA-2046245-C (CA)
Title: Scroll type compressor with variable displacement mechanism
Inventor: MATSUDAIRA YASUYUKI
IPC: F04C27/00
Filed: 1991-07-04
Granted: 1998-11-17
Abstract: A scroll type compressor with a variable displacement mechanism is disclosed which includes a housing with an inner chamber and fluid inlet and outlet ports connected to the inner chamber. A fixed scroll, which is mounted within the housing, has an end plate from which a first spiral wrap extends. An orbiting scroll also is mounted within the housing for orbital motion with respect to the fixed scroll. The orbiting scroll has an end plate from which a second spiral wrap extends. The first and second wraps interfit to define at least one pair of sealed off fluid pockets. The end plate of the fixed scroll partitions the inner chamber of the housing into a suction chamber and rear chamber. The rear chamber includes an intermediate pressure chamber which communicates with the sealed off fluid pockets through a pair of circular holes formed at the end plate of the fixed scroll. A control mechanism controls fluid communication between the intermediate pressure chamber and the suction chamber. A plurality of seal elements are sequentially located along the axial end of the second wrap such that the spaces between the seal elements cross over the circular holes during orbital motion of the orbiting scroll. Thereby, the diameter of the circular holes may be enlarged to prevent constriction of the flow of fluid through the holes during high rotational operation of the compressor, without increasing the possibility of damaging the seal elements due to the seal elements being sandwiched between the spiral wrap and the holes.
Patent CA-2049843-C (CA)
Title: Saturated fluid pumping apparatus
Inventor: SPULGIS IVARS S
IPC: F04B53/12
Filed: 1991-08-26
Granted: 1997-09-30
Abstract: A reciprocating pump which substantially eliminates cavitation problems without imposing capacity and flow limitations to maintain a net positive suction head.  The pump comprises a cylinder having a liquid inlet and a liquid outlet, a piston reciprocably movable within the cylinder and generally intermediate the liquid inlet and liquid outlet,  the piston having a liquid flow conduit therethrough generally co-axial with the cylinder,  the liquid flow conduit having an inlet end in liquid communication with the cylinder liquid inlet and an outlet end in liquid communication with the cylinder liquid outlet, a piston rod reciprocably movable generally along the axis of the cylinder for reciprocably moving the piston within the cylinder in a direction toward the cylinder liquid outlet and in a reciprocal direction and a valve operatively associated with an intermediate the piston rod and the piston liquid flow conduit inlet end for alternatively opening and closing the inlet to liquid flow, the valve being closed when the piston rod and piston are moved in the direction toward the cylinder liquid outlet and being open when the piston rod and piston are moved in the reciprocal  direction.    In  one  embodiment,  the  valve comprises a valve disk freely movable on one end of the piston rod.
Patent CA-2050796-C (CA)
Title: Intrinsically lubricated material compositions and products thereof
Inventor: BERRY JOHNNY D
IPC: C08K5/00
Filed: 1991-09-06
Granted: 2001-01-02
Abstract: A conduit formed of extruded polymeric material, which outer surfaces are continuously intrinsically lubricated by a reserve of active lubricious agents which migrate outwardly from within the composition to such surfaces.
Patent CA-2051012-C (CA)
Title: Carbocyclic adenosine analogs useful as immunosupressants
Inventor: BORCHERDING DAVID R
IPC: A61P3/10
Filed: 1991-09-09
Granted: 2002-04-02
Abstract: This invention relates to novel carbocyclic adenosine compounds of the formula (1)   wherein the hydroxy substituent on the cyclopentanyl ring is in the CIS configuration relative to the bicyclic substituent, Y3, Y7, Y8 and Y9 are each independently nitrogen or a CH group, Q is NH2, halogen or hydrogen, and Z is hydrogen, halogen, or NH2; or a pharmaceutically-acceptable salt thereof, and to their use as immunosuppressants.
Patent CA-2055228-C (CA)
Title: Process for the preparation of a crystallized 4a zeolite
Inventor: BRETAUDEAU DOMINIQUE
IPC: C11D3/12
Filed: 1991-11-08
Granted: 2001-06-12
Abstract: Process for continuous preparation of crystalline zeolite 4A by direct mixing in an unstirred reactor of aqueous solutions of sodium silicate and aluminate, bringing the hydrogel formed into contact with a base stock of sodium aluminate, crystallisation, washing, filtration and optionally drying.
Patent CA-2059791-C (CA)
Title: In vitro method to determine the safety of modified hemoglobin blood substitutes for human prior to clinical use
Inventor: CHANG THOMAS M S
IPC: G01N33/50
Filed: 1992-01-22
Granted: 2004-01-13
Abstract: The present invention relates to an in vitro method to determine the safety of modified hemoglobin blood substitutes for human subjects prior to their clinical usages, wherein the method is based on complement activation reaction from adding modified hemoglobin blood substitutes to a human plasma sample and comprises the steps of: a) obtaining at least one plasma sample from at least one human subject by i) taking a blood sample and immediately centrifugating; and ii) separating the centrifuged blood sample of step i) and retaining the supernatant plasma; b) mixing the plasma of step ii) with the modified hemoglobin blood substitutes or control-ringer in a weight/volume ratio of about 4:1; c) incubating for a time sufficient to allow for a complement activation reaction to occur; d) adding the product of step c) to an appropriate volume of saline in an EDTA tube; and e) analyzing the degree of complement activation by analysis of the product of step d); thereby determining the safety of the modified hemoglobin blood substitutes relative to the human subject plasma sample based on the detection of complement activation.
Patent CA-2060058-C (CA)
Inventor: AXTELL RODNEY J
IPC: A44B19/26
Filed: 1992-01-27
Granted: 1995-11-28
Abstract: A slide fastener slider is disclosed as including spaced parallel wing members and a longitudinal axis therebetween, a pull-lug affixed to its top surface, a pull member operative-ly connected to said pull-lug for moving the slider relative to interlocking elements, with the pull member being movable parallel to the longitudinal axis, and ends on the pull-lug to exert a pulling force on the slider from below the top surface thereof.
Patent CA-2060223-C (CA)
Inventor: LEE CLARENCE C
IPC: A61K38/08
Filed: 1992-01-29
Granted: 1999-07-20
Abstract: The present invention is an injectable medical device useful for replacing natural lubricating fluids in the body of humans or animals. The method and composition can be used for the treatment of joints and other parts of the body wherein natural lubrication between surfaces is deficient or where additional lubrication is required. The composition comprises a hydrophilic polymer suspended in a hydrophobic carrier so that the suspension is easily injectable into the desired body part. After injection, the carrier diffuses away from the polymer and is replaced by aqueous body fluids thereby causing the polymer to absorb or adsorb water forming a viscous, lubricating fluid.
Patent CA-2076776-C (CA)
Title: Orthodontic device for expansion of arches with imbedded wire
Inventor: BERGERSEN EARL O
IPC: A61C7/08
Filed: 1992-08-25
Granted: 2001-06-12
Abstract: A tooth positioner which is formed out of molded plastic to conform about arches defined by upper and lower rows of teeth, the positioner being generally U-shaped in plan and H-shaped in cross-section, the positioner having troughs sized and shaped to conform to the arches, the troughs being defined by lingual and labial-buccal flanges joined together by an isthmus including a wire embedded in the lingual flange to alter the shape of at least one of the arches.
Patent CA-2083088-C (CA)
Title: Polishes for hard surfaces
Inventor: SEJPKA JOHANN
IPC: C09G1/04
Filed: 1992-11-17
Granted: 1996-10-29
Abstract: Polishes for hard surfaces that are essentially free of organic solvent comprising organopolysiloxanes which are solid at room temperature.
Patent CA-2085330-C (CA)
Title: Method and arrangement of pointing an antenna beam to a stationary satellite
Inventor: IWASAKI MOTOYA
IPC: H01Q1/32
Filed: 1992-12-14
Granted: 1997-08-19
Abstract: In order to initially point a directional antenna mounted on a mobile unit to a stationary satellite, the antenna is rotated one revolution in azimuth.  While the antenna rotates, the maximum receive signal strength is detected together with the angular position of the antenna at which the maximum strength has been ascertained.  Subsequently, the antenna is rotated to the angular position which has been determined in the preceding operation.  If the angular position is determined correct (viz., the mobile unit is detected to be synchronized with the satellite), then the initial antenna beam orientation is terminated.
Patent CA-2085384-C (CA)
Title: Speech encoding and decoding capable of improving a speech quality
Inventor: TAGUCHI TETSU
IPC: G10L19/02
Filed: 1992-12-15
Granted: 1997-05-06
Abstract: In an encoding device (103) operable in response to an input speech signal by means of an adaptive transform coding to produce an output encoded speech signal, the input speech signal is partitioned into data blocks by a partition circuit (113).  Each of data blocks is decomposed into a plurality of frequency components by a Fourier transformer (114).  A spectral envelope calculator (120) estimates intensity of a spectral envelope of the input speech signal.  In cooperation with a scalar spectral calculator (115) and a bit assignment determiner (121), a quantizer (116) quantizes or encodes the frequency components with phase information selectively removed from a part of the frequency components on the basis of the intensity of the spectral envelope.  In a decoding device, a phase information assignor assigns pseudo-phase information to each of the frequency components from which the phase information is selectively removed.
Patent CA-2086993-C (CA)
Inventor: LAURITZEN DONALD R
IPC: B60R21/201
Filed: 1993-01-08
Granted: 1998-04-21
Abstract: Featured for use in the reaction canister of an inflatable restraint system is a continuous circumference diffuser tube.  The diffuser tube may be a one-piece, two-piece or clamshell type all of which functionally are the same although the clamshell type is more versatile.  The diffuser tube provides for the attachment of brackets for installation of the reaction canister in the instrument panel of a vehicle, provides a secure reliable attachment for the inflatable bag or protective cushion, and a secure installation of the inflator.  The diffuser tube completely encloses the inflator and allows a last operation of assembly thereof.
Patent CA-2087050-C (CA)
Title: Food product carrier for an automatic cooking machine
Inventor: GONGWER DEAN
IPC: A21B3/15
Filed: 1993-01-11
Granted: 1999-07-13
Abstract: A food product carrier for use in an automatic food cooking machine having opposed integral retaining wire arch members for accepting   retractable pins thereby locking a pivotal wire lid to a wire basket in a closed position which is mounted to the cooking machine and further including an external latch for securing the lid in a closed position while  removed  from  the cooking machine.
Patent CA-2087860-C (CA)
Title: Process for rolling soft metals
Inventor: THOMAS JOHN E
IPC: B21B1/38
Filed: 1992-05-28
Granted: 1996-08-06
Abstract: The method of processing soft metal slabs (10') to strip thickness on a processing line including providing a hot reversing mill (40) having coiler furnaces (42, 44) on either side thereof along the processing line; heating the slab (10') to a hot working temperature; passing the heated slab through the hot reversing mill (40) at least one time to reduce the thickness thereof to form an intermediate product of a coilable thickness; coiling the intermediate product in one of the coiler furnaces (42, 44); passing the intermediate product back and forth through said hot reversing mill (40) and between the coiler furnaces (42, 44) to reduce the intermediate product to a product having a strip thickness; processing the product of strip thickness through a quench (16'); and surface cleaning (30, 32') the quenched product. No subsequent hot rolling, hot milling, cold reduction or anneal takes place prior to forming the product of strip thickness.
Patent CA-2096935-C (CA)
Title: Removable adhesive tape
Inventor: KRECKEL KARL W
IPC: C09J7/24
Filed: 1991-12-16
Granted: 2003-02-18
Abstract: The present invention relates to adhesive tapes, more particularly to tapes that can be firmly adhered to a substrate and can be removed without damaging the substrate. Adhesives formulated to provide a substantial level of adhesion, e.g., greater than 30 oz./in, adhesion to paper, are generally difficult to remove without damaging the substrate. Easily removable tapes of the prior art are highly elastic and exhibit large recoil when the stretching force is removed, in the same way a rubber band snaps back up-on removal of the stretching force: This recoil characteristic can be dangerous, and increases the force required to debond these tapes at low angles. Finally, these highly elastic tapes tend to substantially recover their original shape when the stretching force is removed, and they are therefore not useful for indication of tampering or for guaranteeing single uses for hygienic purposes. This invention provides removable adhesive tape comprising a highly extensible and substantially inelastic backing and a layer of pressure-sensitive adhesive. The backing has a high tensile strength, has a lengthwise elongation at break of at least about 150 % with less than about 50 % elastic recovery after stretching. The adhesive can be a normally tacky and pressure-sensitive adhesive and is coated on at leash one surface of the film backing. The adhesive is preferably highly extensible, does not separate from the backing during stretching, and has higher cohesion than adhesion to any suitable substrate. After being applied to a substrate, the adhesive tape of the present invention becomes firmly bonded, but can be easily removed without damaging the substrate by sim-ply stretching it in a direction substantially parallel, i.e., less than about 35°, to the surface of the substrate.
Patent CA-2099260-C (CA)
Title: A tri-state switching amplifier
Inventor: HOWATT JOHN R
IPC: H03F3/393
Filed: 1991-11-08
Granted: 2001-09-18
Abstract: A switching amplifier system which in one embodiment includes switching circuitry (25) responsive to a tri-state command signal for providing a power output from a power supply (27) which has amplitude levels, time durations, and polarities corre-sponding to the tri-state command signal for supply to a load (19) via a suitable filter (18). A further embodiment includes a line-ar amplifier (53), the switching circuitry responding to a fourth state command signal for actuating the linear amplifier to respond directly to an input signal when the amplitude of the input signal is below a selected level.
Patent CA-2100864-C (CA)
Title: Method for delivering direct feed microorganisms to poultry in ovo
Inventor: CASAS-PEREZ IVAN A
IPC: A61K35/74
Filed: 1992-01-28
Granted: 2002-11-26
Abstract: A method of establishing direct feed microorganisms such as Lactobacillus reureri in the gastrointestinal tract of avian or-ganisms in which eggs are inoculated with living cells of the microorganism.
Patent CA-2100987-C (CA)
Title: A transformant capable of producing d-amino acid oxidase
Inventor: FURUYA KAORU
IPC: C12N15/81
Filed: 1993-07-21
Granted: 1999-06-15
Abstract: A Trigonopsis variabilis transformed with a recombinant DNA containing a D-amino acid oxidase gene capable of expressing in Trigonopsis variabilis is provided. A process for transforming Trigonopsis variabilis and a process for preparing 7-.beta.-(5-carboxy-5-oxopenetaneamide)cephalosporanic acid by using a transformant of Trigonopsis variabilis are also provided. The transformant of Trigonopsis variabilis shows high DAO activity and low activity of an esterase which interferes with the preparation of derivatives of cephalo-sporin C. Accordingly, the Trigonopsis variabilis of the present invention enables one to produce derivatives of cephalosporin C.    Moreover, the Trigonopsis variabilis of the present invention can be used for the preparation of derivatives of cephalosporin C merely by treating the cells with toluene so that large scale use is practical.
Patent CA-2103828-C (CA)
Inventor: JUVINALL JOHN W
IPC: G01B11/02
Filed: 1993-08-11
Granted: 2005-07-26
Abstract: Apparatus for measuring sidewall thickness of transparent containers that includes a source for directing a light beam onto the outer surface of the container sidewall at an angle such that a portion of the light beam is reflected from the outer sidewall surface, and a portion is refracted into the container sidewall, reflected from the inner sidewall surface and then re-emerges from the outer sidewall surface.      A lens is disposed between a linear array light sensor and the container sidewall far focusing light energy reflected from the outer and inner sidewall surfaces onto the sensor. The lens has an image plane in which the sensor is disposed and an object plane co-linear with the light beam. Electronics is responsive to light energy incident on the sensor for determining wall thickness of the container between the inner and outer sidewall surfaces.
Patent CA-2104223-C (CA)
Title: Method and an apparatus for charging a rechargeable battery
Inventor: REIPUR JOHN
IPC: G01R31/36
Filed: 1992-02-14
Granted: 2003-11-18
Abstract: A rechargeable battery is charged by connecting the terminals of the battery to an electrical power source. In order to avoid overcharging and undue temperature increase in the battery cell, the course of a least one charging parameter, such as the in-crease rate of the voltage, is surveyed during at least part of the process of charging the battery. This charging parameter surveyed is compared with a number of reference parameter courses representing idealistic or desireable processes of charging the battery for different starting states of charge of the battery. Such comparisons may for example be made by means of a microprocessor, which may also select the reference course with a starting state of charge similar to the actual starting state of charge of the bat-tery. Thereafter the process of charging the battery may be controlled so as to approximate the course of said charging parameter to the selected reference course. The charging voltage may be limited to a maximum value (Vmax). When such value has been reached the charging process may be terminated after a certain predetermined time period being one of the reference values.
Patent CA-2113970-C (CA)
Title: Method for managing the throughput of digitally coded messages transported through an asynchronous network particularly an atm network and device for its embodiment
Inventor: DUMAS PIERRE
IPC: H04L12/56
Filed: 1994-01-21
Granted: 2003-08-12
Abstract: The method according to the invention consists of a first step in which messages sent by the sending subscriber are segmented into cells, a second step in which initial processing is carried out on each cell in order io space them uniformly at a minimum time interval at least equal to a determined resolution time, a third step in which a second processing succeeding the initial processing is carried out in order to space groups of cells with the same throughput by a minimum time interval determined as a function of the throughput allocated to each network subscriber, and a fourth step in which cells thus spaced are transmitted in a determined virtual circuit on the network.
Patent CA-2124380-C (CA)
Inventor: IMOTO KATSUYUKI
IPC: H01S3/10
Filed: 1994-05-26
Granted: 2002-07-02
Abstract: The present invention relates to an optical waveguide with a specific refractive index difference .DELTA.1, has a construction in which a core having a high refractive index having a rectangular section is built in a cladding layer with a low refractive index formed on a substrate. A pig tail optical fiber comprising a first fiber serially connected to a second fiber each of which has a different specific refractive index difference is connected to an input terminal of the optical waveguide. The second fiber with a specific refractive index difference .DELTA.2 (.DELTA.2 (.DELTA.1) is connected to a terminal of the first fiber with a specific refractive index difference nearly equal to .DELTA.1. A diffusion region at the neighbourhood of the connection between the first and the second fiber is formed by diffusing the dopant for refractive index control in the core of the second fiber by heat addition. By the diffusion region, both diameters of the first and the second fiber are adjusted so as to be nearly equal in diameter.
Patent CA-2137435-C (CA)
Inventor: OSOWSKI DENIS M
IPC: B23K9/073
Filed: 1994-12-06
Granted: 1997-11-18
Abstract: An engine-driven, multiple-phase, alternator-powered SCR rectified arc welding power supply using a single synchronizing winding within the alternator providing signals to a synchronizing digitizer which masks noise for most of each cycle of the alternator. The synchronizing circuitry prevents spurious synchronizing signals.
Patent CA-2142639-C (CA)
Title: Method and apparatus for suspension smelting
Inventor: HANNIALA PEKKA
IPC: C22B15/00
Filed: 1995-02-16
Granted: 2007-04-17
Abstract: The invention relates to a method and an apparatus for the suspension smelting of sulfidic, finely divided raw materials containing metals, such as copper, nickel and lead, by using oxygen enrichment. In this method into the suspension smelting furnace (1) there is fed the raw material (4,5) to be smelted together with flux (6) and oxidizing gas (7) and the walls (18) of the reaction space of the suspension smelting furnace are cooled and at least two molten phases created (16,17). According to the invention the degree of oxygen enrichment of the oxidizing gas is at least 40 % in order to raise the temperature of the particles in suspension to at least 200 °C higher than the temperature of the gas phase of the suspension, in order to improve the reaction kinetics of the reactions taking place in the reaction space, and that the thickness of the reaction space wall lining is adjusted, according to the production quantity of the suspension smelting furnace, by means of cooling elements (20) manufactured by draw casting and installed in the wall of the reaction space.
Patent CA-2147806-C (CA)
Inventor: BERNARDON JEAN-MICHEL
IPC: C07C69/732
Filed: 1995-04-25
Granted: 2001-02-13
Abstract: Polyenic cpds. of formula (I) and their salts and optical and geometric isomers, are new. R1 = -CH3, -CH2-O-R9, -CH2-O-CO-R10 or -CO-R11; R2, R3, R5 = H or lower alkyl; R4 = H; R6 = H, 1-20C alkyl, -O-CH2-O-CH2-CH2-O-CH3 or -O-R13; or R4+R6 together with the adjacent benzene ring form a naphthalene ring; R7, R8 = (i) H, (ii) 1-20C alkyl, (iii) cycloaliphatic gp., (iv) -O-CH2-O-CH2-CH2-O-CH3, (v) -O-R13 or (vi) -S(O)nR13; provided that R7 and R8 are not (i), (iv), (v) or (vi) at the same time; R9 = H or lower alkyl; R10 = lower alkyl; R11 = (a) H, (b) lower alkyl, (c) -N(R')R" or (d) -OR12; R', R" = H, lower alkyl, mono- or poly-hydroxyalkyl, aryl (opt. substd.) or an amino acid, peptide or sugar residue or together form a heterocyclic gp.; R12 = H, 1-20C alkyl, alkenyl, mono- or poly-hydroxyalkyl or opt. substd. aryl or aralkyl, or a sugar, aminoacid or peptide residue; R13 = H or 1-20C alkyl; n = 0, 1 or 2.