baber/WOPTO huggingface dataset:
Patent CA-2017386-C (CA)
Title: Lower spray arm for dishwasher
Inventor: JARVIS WILBUR WARREN
IPC: A47L15/23
Filed: 1990-05-23
Granted: 1996-02-27
Abstract: A spray arm assembly for delivering a fluid under pressure into a dishwasher wash chamber consists of a spray arm having a rotational axis and defining a fluid passageway for distributing incoming fluid into the wash chamber,  a tower section,  structure  for mounting  the tower  section  to  the  spray arm  for  guided  movement relative to the spray arm between a retracted position and an extended position,  and structure on the tower section for directing fluid from the fluid supply into the wash chamber with the tower section in its extended position.  Mounting structure, integrally formed with the spray arm,  prevents the tower section from separating from the spray arm with the tower section in its extended position.  Any number of cooperating tower sections can be employed.
Patent CA-2020489-C (CA)
Inventor: SOVAK MILOS
IPC: C07C233/65
Filed: 1990-07-05
Granted: 2005-01-11
Abstract: Novel triiodo 5-aminoisophthaldiamides are provided, where the amino and one of the amide nitrogens are substituted. The compounds have at least two hydroxyl groups and are found to provide low viscosity and osmolality. Procedures for preparing the compounds are provided.
Patent CA-2023331-C (CA)
Title: Press section apparatus
Inventor: NELSON JOHN P
IPC: D21F3/02
Filed: 1990-08-15
Granted: 1995-10-10
Abstract: A press section apparatus defining a press nip is disclosed for pressing a web of paper.  The apparatus includes a frame and a press member secured to the frame.  A backing roll is rotatably secured to the frame with the backing roll cooperating with the press member for defining therebetween the press nip.  The backing roll also includes a shaft which has a first and a second end.  The ends of the shaft are secured to the frame and a shell defines a granite outer surface with the shell being disposed substantially coaxially relative to and around the shaft.  The shell is rotatable relative to the shaft and a deflection compensating device compensates for relative deflection between the shell and the press member during passage of the web through the press nip.
Patent CA-2027542-C (CA)
Title: Uv-absorbing cyclic enaminoketones
Inventor: CHALMERS PETER JAMES
IPC: A61K8/49
Filed: 1990-02-23
Granted: 1999-12-14
Abstract: The invention provides UV-absorbing compounds of formula (I), processes for preparing compounds of formula (I) and compositions, including sunscreens, containing compounds of formula (I), wherein A and B are alkyl, haloalkyl or together form a carbocyclic ring; R1 is alkyl, haloalkyl, substituted alkyl where the substituent is selected from hydroxy, amino, alkoxy, alkanoyl, alkoxycarbonyl, phenyl and the radical of formula (I(a)), wherein A, B, R2 and R3 are as herein defined; alkenyl, cycloalkyl; phenyl; the groups phenyl and benzyl; said groups being substituted in the benzene ring by alkyl, alkenyl and alkoxy; and wherein R1 and R2 may form a carbocyclic ring; R2 is hydrogen or alkyl; R3 is alkyl, substituted alkyl, alkenyl, cycloalkyl and substituted benzyl; and the invention also provides for compounds of formula (VII); wherein A and B are methyl; R2 is hydrogen; and R3 is alkyl.
Patent CA-2032278-C (CA)
Title: Multistep synthesis of hexafluoropropylene
Inventor: WEBSTER JAMES L
IPC: C07C17/23
Filed: 1990-12-14
Granted: 2001-05-29
Abstract: The present invention relates to multistep syntheses of hexafluoropropylene from hexachloropropylene.      In all these syntheses the first step is a fluorination of the starting material; later steps convert the initial products to CF3-CFCl-CF3, which is dehalogenated to the desired product.
Patent CA-2033239-C (CA)
Title: Polythiol compound, and optical material and product produced therefrom
Inventor: OHKUBO TSUYOSHI
IPC: G02B1/04
Filed: 1990-12-27
Granted: 1996-10-01
Abstract: This invention relates to a polythiol compound and an optical material therefrom. Having a rigid 1,4-dithian ring which increases the refractive index and Abbe's number, the polythiol compound used for the production of an optical material imparts the optical material with high heat resistance and excellent mechanical properties as well as excellent optical properties.
Patent CA-2034610-C (CA)
Title: Platinum-enriched surface layer catalyst for the isomerization of alkanes
Inventor: SCHMIDT ROBERT J
IPC: C07C5/22
Filed: 1991-01-21
Granted: 1999-10-12
Abstract: An improved catalyst particle for the conversion of hydrocarbons comprises a combination of a Friedel-Crafts metal halide, and a surface-layer platinum-group metal component with a refractory inorganic-oxide support, wherein the concentration of platinum-group metal component on the surface layer of the catalyst particle is at least 1.5 times the concentration in the central core of the catalyst particle. An isomerization process using the improved is also disclosed which is particularly effective for the conversion of C4-C7 alkanes especially when a principally liquid-phase operation is utilized.
Patent CA-2040662-C (CA)
Title: Apparatus and method for applying a multi-package carrier
Inventor: SEYMOUR LONNIE RAY
IPC: B65B61/04
Filed: 1991-04-17
Granted: 1998-10-06
Abstract: An apparatus and method for assembling a plurality of articles with carriers in a connected carrier strip.  The apparatus and method separates the strip of carriers assembled with a plurality of articles to form discrete packages of a plurality of articles by dividing the carrier strip horizontally transversely to the path of travel of the articles and the assembled carrier strip.  The portion of the apparatus for separating the articles is positionable between groups of articles moving along a path of travel and provides tensioning of the carrier strip between groups of articles to facilitate dividing the carrier strip along weakened lines.
Patent CA-2043942-C (CA)
Inventor: BERNDTSON JOHN J
IPC: F16H63/32
Filed: 1991-06-05
Granted: 1995-01-17
Abstract: SHIFT FORK FOR A VEHICULAR TRANSMISSION     ABSTRACT OF THE DISCLOSURE         The present invention relates to a shift fork (10) for a vehicular transmission.  The shift fork (10) utilizes a hub portion (12) from which an offset arm (16) extends radially outwardly to terminate in an outer end portion (18).  One or more contact pads (22 and 44) are supported from the outer end portion (18) of the offset arm (16), and the tines (20) extending from the offset arm (16).  The contact pads (22 and 44) present longitudinally facing wear surfaces (24 and 46).  Each of the longitudinally oriented wear surfaces (24 and 46) has an angularly inclined portion (32 and 48).  The inclined portions (32 and 48) each diverge outwardly at an angle (phi or theta) which equals the angle at which the offset arm (16), or each tine (20), deflects at the location along the contact pads (22 and/or 44) where each wear surface (24 and/or 46) is subjected to a predetermined load.
Patent CA-2046148-C (CA)
Title: Alkaline cells that are substantially free of mercury
Inventor: GETZ DALE R
IPC: H01M6/50
Filed: 1991-07-03
Granted: 1997-01-07
Abstract: Alkaline cells are substantially free of mercury, employ a zinc anods and do not exhibit leakage after discharge through an electrical resistor to 1.2 volts and then stored under storage conditions of 21° C for ninety days.
Patent CA-2049194-C (CA)
Title: Hoist load brake
Inventor: MCCORMICK STEPHEN
IPC: F16D59/00
Filed: 1991-08-14
Granted: 1995-06-27
Abstract: A load brake for a rotating drum of a hoist having a drum drive motor positioned adjacent a first end of the drum and a motor drive shaft extending through the drum and projecting out a second end of the drum opposite the motor end of the drum, and a drive gear affixed to the end of the motor drive shaft projecting from the second end of the drum for reducing the drive speed of the motor.  A toroidal drive shaft is positioned coaxially of the motor drive shaft and is affixed to and extends from the drive gear towards the second end of the drum.  The load brake is positioned coaxially of and is affixed to the toroidal drive shaft between the gear drive and the second end of the drum for transmitting rotating drive force from the gear drive to the drum and braking a load on the drum and the motor during lowering of a load on the hoist.  The load brake includes a friction plate adjacent the second end of the drum.  The friction plate and second end of the drum each have circumferentially positioned meshing gear teeth for driving rotation of the drum by the load brake means.  The gear teeth may be axially directed splines which may have an involute gear profile.  The load brake means including the meshed gear teeth of the drum are disposed coaxial with and radially spaced from the motor drive shaft so that the gear teeth rotate independently of the motor drive shaft.  The splines are slidable in axial directions to permit the load brake to also move in axial directions to engage and disengage braking friction surfaces of the load brake.
Patent CA-2051442-C (CA)
Inventor: TAKAGI HISAMITSU
IPC: H04M1/02
Filed: 1991-02-26
Granted: 1995-07-18
Abstract: A portable telephone having a cover (14) rotatably mounted to a body (2).  When the cover (14) is in a closed condition, it covers and protects a switch section of the body (2), while when the cover (14) is in an open condition, it is held in a stable position at a predetermined inclined angle with respect to the body (2) by a cover holding mechanism.  Further, when the cover (14) is in the open condition, it also functions as a voice reflecting and collecting board for a microphone provided in the body (2).  Thus, the portable telephone can be made compact.
Patent CA-2054840-C (CA)
Title: Liquid de-icing agent based on acetates and process for melting snow and ice on traffic surfaces with the aid of this agent
Inventor: STANKOWIAK ACHIM
IPC: E01H10/00
Filed: 1991-11-01
Granted: 2000-04-18
Abstract: Liquid de-icing agent based on acetates and process for melting snow and ice on traffic surfaces with the aid of this agent The de-icing agent described comprises an aqueous solution of at least one alkali metal acetate or at least one alkaline earth metal acetate or a mixture of the two and water as the main components, and 0.01 to 1 % by weight of at least one water-soluble triazole compound or at least one water-soluble imidazole compound or a mixture of the two and, if appropriate, 0.01 to 0.5 % by weight of at least one alkali metal phosphate as inhibitors. The process described for melting snow and ice on traffic surfaces comprises application of an effective amount of the novel de-icing agent to the ice- and/or snow-covered surfaces to be treated.
Patent CA-2064001-C (CA)
Title: Activatable/deactivatable security tag for use with an electronic security system
Inventor: RODE FRANCE
IPC: G01S13/74
Filed: 1991-05-29
Granted: 2000-02-29
Abstract: A security tag (10) for use with an electronic security system, has circuitry for initially establishing a resonant circuit (14, 14') having a first resonating frequency within a first frequency range which is outside the detection range of the electronic security system. The tag is activated by changing the resonating frequency of the resonant circuit to a second frequency within the detection range by exposing the resonant circuit to electromagnetic energy within the first frequency range at a predetermined minimum power level to short-circuit a first circuit component. The tag is deactivated by again changing the resonant frequency of the resonant circuit to a third resonant frequency within a third frequency range which is also outside the detection range by exposing the resonant circuit to electromagnetic energy within the detection frequency range of at least a predetermined minimum power level to short-circuit a second circuit component.
Patent CA-2064625-C (CA)
Inventor: DENGLER WILLIAM R
IPC: E21B15/04
Filed: 1992-04-01
Granted: 1995-06-20
Abstract: A method  for  breaking  a  longer  round  more efficiently in a full face of rock, to construct shafts or tunnels.  In the method a relief hole having at least a 200 mm diameter and at least a 15 to 18 foot depth is drilled.  Primary and secondary blast holes are drilled about the relief hole, approximately axially parallel to the relief hole.   Most of the blast holes are drilled simultaneously with the relief hole.  The relief hole is drilled by an in-the-hole (ITH) hammer drill, which if necessary is removed after drilling the relief hole, to allow blast holes to be drilled immediately adjacent the relief hole.  The relief hole is drilled at least 10 to 15 percent deeper than the blast holes.  Explosive charges are then inserted into the relief hole and most of the blast holes and are detonated in sequence.  The simulta-neous drilling of the relief and blast holes, and the use of the large relief hole, enable a greater advance per round and make the process highly time efficient, while at the same time requiring less skill than was previously needed.  This increases productivity and lowers cost.
Patent CA-2071218-C (CA)
Title: Method for reducing water inflow in oil or gas wells using improved gel compositions
Inventor: KOHLER NORBERT
IPC: C08L5/00
Filed: 1991-10-28
Granted: 2002-12-10
Abstract: Novel gel-based compositions used in reducing water inrush in oil or gas-producing wells. The gel-based compositions consist of a solution of at least one hydrosoluble complex of a polyvalent metallic cation such as zirconium lactate capable of crosslinking a non-ionic polysaccharide such as scleroglucane, in a concentration of 2 to 10,000 parts per million parts, expressed by weight of metal dioxide. With a preferred concentration of 2 to 100 ppm, oil permeability is not substantially affected. The compositions form aqueous scleroglucane gels for use in preventing water inrush in hydrocarbon producing wells.
Patent CA-2072874-C (CA)
Title: Polypeptides having human dopaminergic receptor activity, nucleic acids coding for said polypeptides and uses thereof for screening active substances on said polypeptides
Inventor: GIROS BRUNO
IPC: C07K16/00
Filed: 1991-10-16
Granted: 2004-12-28
Abstract: Novel polypeptides are provided having dopaminergic receptor activity and containing the 400-aminoacid sequence of figure 1 or a fragment thereof, said fragment being such that: either it nevertheless contains the sites included in the sequence and whose presence is required if, when said fragment is exposed on the surface of a cell, it is specifically and quantitatively to bond the dopamine, its agonists or its antagonists, for example by means of a radioactive ligand; or it may be recognized by antibodies which also recognize the abovementioned sequence of 400 aminoacids but do not recognize either the D-1 dopaminergic receptor, the D-2 dopaminergic receptor or the rat D-3 receptor; or else it may generate antibodies which recognize the abovementioned sequence of 446 aminoacids but do not recognize either the D-1 dopaminergic receptor, the D-2 dopaminergic receptor, or the rat D-3 receptor.
Patent CA-2076784-C (CA)
Title: Sheet stacking apparatus
Inventor: DOLE OTTO R
IPC: B65H31/18
Filed: 1992-08-25
Granted: 1997-10-14
Abstract: A sheet stacker for stacking multiple sheet sizes from B5 to A3 allows easy conversion from stacking sheets without a container to stacking sheet with a container. An elevator mechanism is used to lift a four point frame of a main pallet when sheets are stacked directly onto the main pallet and a spider latch is used that can be rotated to allow the lift frame to pass through the main pallet and lift container pallets that are positioned within each container. Sheets can be stacked on a container pallet without using a container, if desired.
Patent CA-2086639-C (CA)
Title: Angle dual check valve
Inventor: DAGHE JOSEPH L
IPC: E03C1/10
Filed: 1993-01-04
Granted: 1996-04-30
Abstract: An angled check valve has a valve housing with an inlet for admitting fluid flow into the housing in a first direction and an outlet for discharging fluid flow from the housing in a second direction.  The first direction and the second direction are generally perpendicular.   An inlet check assembly in the housing has a valve member movable in the first direction for preventing fluid flow from exiting the housing through the inlet.  An outlet check assembly in the housing has a valve member movable in the second direc-tion for preventing fluid flow from entering the housing through the outlet.   In order to facilitate assembly and service of the check valve,  the housing has an opening extending in the second direction through which the inlet check assembly and the outlet check assembly can be assem-bled into and removed from the housing.
Patent CA-2099304-C (CA)
Inventor: BLOOR ALAN STUART
IPC: G01B5/30
Filed: 1993-06-28
Granted: 1999-02-09
Abstract: A  strata   movement  indicator  includes  at  least  two  lengths  of suspension  wire  respectively  for remote and near anchors locatable in the same borehole.   Each wire carries a  cylinder  provided  with indicator markings, the cylinders being moveable with respect to one  another  and  to  a  reference  tube  fixed  in the mouth of the borehole.    Relative   movement of the cylinders with respect  to  one another  and/or  to the reference tube indicates the degree of strata movement.
Patent CA-2103389-C (CA)
Title: Device for implanting an endoprosthesis
Inventor: GIANOTTI MARC
IPC: A61F2/962
Filed: 1993-11-18
Granted: 2002-07-16
Abstract: Sleeve element (1) is mounted in a lengthwise displaceable fashion on a core element (4). Core element (4) has a pistol butt-shaped handle (8). Sleeve element (1) has two projections (10, 11) which can only be surrounded by fingers in order to retract sleeve element (1) onto core element (4) to eject an endoprosthesis. Because of its pistol butt-shaped handle (8), greater human force can be used to hold core element (4) than it is possible to use to retract sleeve element (1) by applying fingers to its projections (10, 11). This ensures that when the endoprosthesis is positioned and released by retracting sleeve element (1), there will be no change in the position of core element (4), which would cause an undesired change in the position of the endoprosthesis to be implanted.
Patent CA-2104381-C (CA)
Title: Production and use of butyrylcholinesterase
Inventor: LYNCH THOMAS J
IPC: A61P25/00
Filed: 1992-02-19
Granted: 1998-12-01
Abstract: Butyrylcholinesterase is produced in a purity of at least 90% by subjecting plas ma fraction IV-4 alone or in admixture with fraction IV-1 to both anion exchange chromatography and affinity chromatography.
Patent CA-2105277-C (CA)
Title: Genetically engineered vaccine strain
Inventor: COX WILLIAM I
IPC: A61K39/245
Filed: 1992-03-09
Granted: 2006-12-12
Abstract: What is described is a modified vector, such as a recombinant poxvirus, particularly recombinant vaccinia virus, having enhanced safety. The modified recombinant virus has nonessential virus-encoded genetic functions inactivated therein so that virus has attenuated virulence. In one embodiment, the genetic functions are inactivated by deleting an open reading frame encoding a virulence factor. In another embodiment, the genetic functions are inactivated by insertional inactivation of an open reading frame encoding a virulence factor. What is also described is a vaccine containing the modified recombinant virus having nonessential virus-encoded genetic functions inactivated therein so that the vaccine has an increased level of safety compared to knwon recombinant virus vaccines.
Patent CA-2108538-C (CA)
Inventor: SHINDE HIROTAKE
IPC: G06F17/50
Filed: 1993-10-15
Granted: 2000-04-11
Abstract: This invention relates to a digital circuit design assist system, and is directed to provide a system which independently verifies hardware divided into a plurality of units or the hardware and software, and reduces the design time.      This system comprises a functional model storage unit 1 for storing functional models in order to design hardware for a desired digital circuit comprising the hardware alone or the hardware and firmware, and functionally expressing the digital circuit by a hardware description language through a text editor 15 by coding input, logic synthesis means 2 for converting the functional model to a structural model structurally expressed by the hardware description language, a structural model storage unit 3 for storing the structural model, a language model library storage unit 4 for storing language models each expressing each of a plurality of components constituting the hardware by the hardware description language, and hardware description language simulation means 5 for verifying correctness of the logic of the hardware from the functional model, the structural model and the language model.
Patent CA-2109471-C (CA)
Inventor: MCNAIR JOHN DUNCAN
IPC: A47J27/21
Filed: 1993-10-28
Granted: 2002-05-21
Abstract: An electric immersion water heater comprises a vessel with a heating element having cold tail ends extending individually through a slide wall of the vessel. Temperature sensing elements sense temperature levels of an outer wall of the heating element outwardly of the vessel and are arranged to disconnect power to the element upon either a boil condition within the vessel occurring or upon sensing an elevated temperature indicative of dry or partially dry operation within the vessel. The heating element further including a jacket defining a space around the outer wall of a core part of the heating element within the vessel adjacent the vessel wall and arranged to fill with steam upon a bail condition occurring in the vessel during normal operation.
Patent CA-2114092-C (CA)
Title: Heating apparatus utilizing microwaves
Inventor: NARA AKIKAZU
IPC: F24H3/04
Filed: 1994-01-24
Granted: 1998-04-21
Abstract: A heating apparatus utilizing microwaves characterized in that it is possible to heat with a super high temperature over about 1000~C and also to control the temperature within the wide range from such a super high temperature to a comparative low temperature.  The heating apparatus is composed of a heating element mainly made of a carbon powder and sintered in honeycomb structure, a microwave generator irradiating microwaves to the heating element and an air blower blowing air to the heating element thereby obtaining hot air with high temperature.
Patent CA-2128241-C (CA)
Inventor: WHITE DAVID C
IPC: D21C/
Filed: 1992-04-24
Granted: 2000-09-05
Abstract: L'invention se rapporte à un appareil et à un procédé pour blanchir la pulpe lignocellulosique à haute consistance à l'aide d'ozone contenu dans un gaz. Le réacteur de blanchiment est, selon l'invention, un récipient généralement cylindrique (42A, 42B) à arbre rotatif (48) pourvu d'ailettes s'étendant radialement (52B) ou d'autres éléments transporteurs disposés dans une configuration permettant de minimiser la dispersion axiale de la pulpe et de maximiser sa dispersion radiale pour produire un écoulement idéal de la pulpe dispersé radialement dans le réacteur, en présence de l'ozone, afin d'obtenir une pulpe pratiquement uniformément blanchie.
Patent CA-2131680-C (CA)
Title: Process for preparing imidazopyridine derivatives
Inventor: STUCKY GERHARD
IPC: C07D519/00
Filed: 1994-09-08
Granted: 2006-11-07
Abstract: A new process is described for preparing imidazopyridines of the general formula:   (see formula I) wherein R1 is an alkyl, cycloalkyl, aryl or aralkyl group or is a heterocyclic radical, R2 and R4 are identical or different and each represents hydrogen, a hydroxy, a cyano, alkyl, cycloalkyl, aryl or aralkyl group or an alkanoyl or an alkoxycarbonyl group and R3 is hydrogen, an alkyl, aryl or aralkyl group or a halogen atom.      In the key step of the process, an imidate of the formula:   (see formula II) is cyclized with aminoacetonitrile and a 1,3-dicarbonyl compound of the general formula:   (see formula III) The imidazopyridines (I) are valuable intermediates for the preparation of angiotensin II antagonists.