baber/WOPTO huggingface dataset:
Patent CA-2038328-C (CA)
Inventor: LAFORTE M ROBERT
IPC: B01D53/04
Filed: 1991-03-15
Granted: 1992-10-27
Abstract: L'appareil de filtration d'air décrit ici comporte une chambre où sont situés un ou plusieurs filtres contenant du charbon activé, et permettant de faire entrer de l'air vicié et d'en faire sortir l'air filtré. Cet appareil comporte aussi un système intégré pouvant effectuer le lavage de la matière active du charbon activé des filtres, par des jets d'eau chaude. Le système de lavage à l'eau chaude permet la désorbtion des Produits Organiques Volatils (POV) captés par les filtres au charbon activé sous forme de liquide plus ou moins huileux, pouvant être récupéré ou non selon un système plus ou moins complexe de récupération des liquides. Les filtres après avoir été lavés par l'action du système de lavage à l'eau chaude, peuvent être réutilisés tels quels. Le système intégré de lavage s'opérera lorsque l'entrée et la sortie de l'air seront cessés.
Patent CA-2040281-C (CA)
Title: Wireline supported perforating gun enabling oriented perforations
Inventor: JORDAN JOHN WESLEY
IPC: E21B17/10
Filed: 1991-04-11
Granted: 1997-01-28
Abstract: A perforating gun assembly is set forth. It incorporates a swivel connected with a cable head assembly and a navigation system for determining the instantaneous angle of the tool with respect to a vertical reference. There are first and second spaced cages formed of sleeves supported on bearing assemblies. The sleeves support free wheeling rollers which engage the casing when the tool is in the slant hole region of the well. There is an eccentric which falls downwardly, i.e., pointing toward gravity, and thereby defines a vertical reference and hence a horizontal reference. This eccentric mounts an elongate tubular housing for the shaped charges. Initially, the angle of firing of the shaped charges is adjusted at the time of installation with respect to the horizon and that in turn is correlated to the formation of interest in the well borehole which is then perforated with perforations which are parallel to the formation bedding plane.
Patent CA-2043651-C (CA)
Title: Suspension package
Inventor: BOECKER MARK E
IPC: B65D77/26
Filed: 1991-05-31
Granted: 1995-07-11
Abstract: A suspension package of the type having a frame and a hammock tensioned across the frame to enfold and support a product is provided with a brace to prevent the ends of the frame from moving inwardly.  This brace simultaneously provides a safety net to protect the product being loaded into the hammock.   The hammock is secured to tensor flaps on the frame, and these flaps are provided with tabs which prevent the flaps from rotating inwardly past the plane of the end panels.  The hammock is folded in a double fan fold at its ends to facilitate top loading and to accommodate the widest range of product sizes and shapes.  Each of the tensor flaps has an inner part and an outer part, and the hammock end is sandwiched between the inner and outer parts and held in place by a double ended rivet which simultaneously operates to secure the tensor flaps in the hammock tensioning position.  Cinching devices are used around the hammock to center the product within the frame. Lifting slots and handles are disclosed for facilitating removal of the frame from a container.
Patent CA-2048842-C (CA)
Title: Substituted pyrimidine derivatives, a process for the preparation thereof and the use thereof as reagents
Inventor: GEISEN KARL
IPC: A61P3/08
Filed: 1991-08-09
Granted: 2002-04-09
Abstract: Substituted pyrimidine derivatives, a process for the preparation thereof and the use thereof as reagents Pyrimidine derivatives of the formula I    in which R1, R2, X and Y have the stated meaning, the salts thereof and a process for the preparation thereof are described. Because of their sorbitol-accumulating activity, they are suitable fox use as reagents for an advantageous pharmacological screening model for testing aldose reductase inhibitors.
Patent CA-2049850-C (CA)
Inventor: EFFLAND RICHARD CHARLES
IPC: A61P29/00
Filed: 1991-08-26
Granted: 2002-03-05
Abstract: 4-Substituted Dihydropyrido[4,3-d]pyrimidines as Analgesics and Topical Antiinflammatoxy Agents for the Treatment of Skin Disorders There are described compounds of the formula (see formula I) where R1 is hydrogen, loweralkyl, arylloweralkyl or aryl;      R2 when present is hydrogen, loweralkyl, arylloweralkyl; and R3 is hydrogen, loweralkyl, cycloalkyl or aryl;   which compounds are useful as analgesics and topical antiinflammatory agents for the treatment of skin disorders.
Patent CA-2052233-C (CA)
Inventor: LUPI QUINTILIO
IPC: B24B9/06
Filed: 1991-09-25
Granted: 2002-12-10
Abstract: A shaped diamond wheel, at certain height, determined by both the type of grinding wheel which is being used and the working stage, is provided with a rotating feeling pin, consisting of a metal element a few millimeters high which projects for few hundreths of a millimeter with regard to the shape of grinding wheel. The rotating feeling pin does not interfere with the working of stone, with the exception of very small portion of stone which come into contact with the rotating feeling pin.
Patent CA-2052337-C (CA)
Title: Vacuum fill system
Inventor: DERBY NORWIN CED
IPC: B65B31/04
Filed: 1991-09-27
Granted: 1996-12-03
Abstract: A  vacuum  fill  system  for  deaerating  flowable material includes a cylindrical container partitioned into a plurality of chambers which rotate sequentially and which are connected to a vacuum pump for establishing a vacuum when filled with flowable material.  The flowable material deaerates  and  compacts  when  atmospheric  pressure  is subsequently restored.
Patent CA-2059983-C (CA)
Inventor: SCOTT JOHN DAVID
IPC: B01J23/26
Filed: 1992-01-24
Granted: 2002-10-29
Abstract: A chromium-containing fluorination catalyst which comprises an activity-promoting amount of zinc or a compound of zinc, a process for increasing the activity of a chromium-containing fluorination catalyst by introducing an activity promoting amount of zinc or a compound of zinc to the catalyst and a process for the production of fluorinated hydrocarbons, in particular 1,1,1,2-tetrafluoroethane which comprises reacting a hydrocarbon or a halogenated hydrocarbon, in particular 1-chloro-2,2,2-trifluoroethane with hydrogen fluoride in the vapour phase in the presence of the zinc-promoted chromium-containing catalyst.
Patent CA-2063567-C (CA)
Inventor: ALLAN G GRAHAM
IPC: D21H17/67
Filed: 1990-07-24
Granted: 2000-12-26
Abstract: L'invention concerne une composition de papier chargé comprenant des fibres de cellulose intactes ainsi que des matières de charge, dans laquelle les fibres de cellulose sont à l'origine constamment humides, et dans laquelle la matière de charge se trouve dan s un précipité insoluble formé in situ à l'intérieur de la paroi cellulaire des fibres de pâte de cellulose constamment humides. La composition de papier chargé est caractérisée en ce qu'ell e présente des caractéristiques de résistance supérieure par rapport à une composition de papier chargé classique correspondante contenant la même quantité de la même matière de charge. L'invention concerne également un procédé de production de papier chargé utilisant des fibres de pâte constamment humides ainsi qu'une matière de charge comprenant un précipité insoluble lequel est précipité in situ à l'intérieur de la paroi cellulaire des fibres. Le procédé consiste premièrement à immerger les fibres de pâte constamment humides dans une première solution contenant un ou plusieurs sels solubles, à filtrer les fibres de pâte de la première solution, puis à réimmerger les fibres de pâte constamment humides contenant la première solution se trouvant dans les pores dans une seconde solution, ladite seconde solution comprenant un ou des sels solubles différents de ceux de ladite première solution et capables de former un précipité insoluble avec le ou les sels de ladite première solution. Les fibres de pâte chargées, constamment humides sont filtrées puis sont lavées, et soit sont utilisées pour former des produits de papiers chargés soit sont séchées pour obtenir des fibres de pâte chargées destinées à une utilisation ultérieure dans la fabrication de papier.
Patent CA-2065088-C (CA)
Title: Method of preparing 4-aminodiphenylamine
Inventor: ALLMAN JAMES MALCOLM
IPC: C07C209/30
Filed: 1992-04-03
Granted: 2001-06-12
Abstract: A method of producing 4-ADPA is disclosed wherein aniline or substituted aniline derivatives and nitrobenzene are reacted under suitable conditions to produce 4-nitrodiphrenylamine ar substituted derivatives thereof and/or 4-nitrosodiphenylamine or substituted derivatives thereof and/or their salts, either or both of which are subsequently reduced to produce 4-ADPA or substituted derivatives thereof. The 4-ADPA or substituted derivatives thereof can be reductively alkylated to produce p-phenylenediamine products or substituted derivatives thereof which are useful as antiozonants. A second embodiment of the invention is the tetrasubstituted ammonium salts or alkyl substituted diammonium salts of 4-nitrodiphenylamine, 4-nitrosodiphenylamine and the substituted derivatives thereof wherein each substituent of the tetrasubstituted ammonium ion is independently selected from the group consisting of alkyl, aryl and arylalkyl groups and each alkyl substituent of the alkyl substituted diammonium salt is independently selected.
Patent CA-2069685-C (CA)
Title: Bag holder
Inventor: CARPENTIER PAUL-ANDRE
IPC: B65B67/12
Filed: 1992-05-27
Granted: 1995-05-23
Abstract: A bag holder for holding bags such as trash bags used for gardening. It comprises a rod having two side arms integrally projecting therefrom and extending forwardly. A sleeve with large rounded heads are set at the ends of each arm. The upper edge of the bag is set around the rod and the sleeves in order to be held and kept open. The large heads of the sleeves apply a pressure to tighten the upper edge around the rod without puncturing the bag. The bend angle of the arms could be change in combination with the moving of the sleeves along the arms to accommodate bags of different sizes, shapes or purposes. The rod is vertically supported by a vertical rod or by an handle.
Patent CA-2078564-C (CA)
Title: Pavement and base recycle method and apparatus
Inventor: O'CONNOR PATRICK L
IPC: E01C23/06
Filed: 1991-03-12
Granted: 1997-05-20
Abstract: A method and apparatus for repairing a utility cut (12) in a section of pavement (14) is provided. The method includes the steps of transferring broken pavement and underlying base material from the utility cut (12), mixing the transferred material with predetermined quantities of water and binder material to form a fluid, unshrinkable, settable filler mixture which is then reappli-ed to the utility cut (12). The filler mixture hardens to a set state in a short period of time. All of the operative elements of the ap-paratus (10) for performing the method are arranged for use directly at the utility cut site. An optional crusher (42) for reducing larger excavated particles to a smaller size and a heater for heating the filler material reapplied to the utility cut (12) may also be employed. Further, the removed material may be separated according to size to exclude particles above a predetermined size. Fi-nally, a suction pump may be employed to remove water from, below or above the filler material after the filler material has been applied to the utility cut (12).
Patent CA-2079372-C (CA)
Inventor: BAIN JEAN YVES
IPC: E01H5/09
Filed: 1992-09-29
Granted: 1996-05-14
Abstract: La machine comprend un camion porteur d'une citerne remplie d'une saumure et une partie remorquée munie d'une rampe de pulvérisation de la saumure sous la forme d'un brouillard salin. suivant l'invention la machine comprend en outre deux brosses cylindriques parallèles tournant en sens contraires à proximité de la voie de circulation de manière à ramasser la neige répandue sur la voie et à la projeter vers le haut entre ies brosses sous la forme d'un nuage, dans l'espace où le brouillard salin est diffusé.
Patent CA-2080049-C (CA)
Inventor: BOLICH RICHARD M
IPC: B65H37/00
Filed: 1992-10-07
Granted: 1996-07-16
Abstract: Apparatus for paying out bisected insulation material includes a cradle for holding a supply roll of bisected insulation material, a rewind shaft for rerolling a second layer of the supply roll as a first layer of the supply roll is payed out, and mounting means for the rewind shaft adapted to enable the rewind shaft to move in a plane at an angle to the vertical as the relative sizes of the supply roll and the rewind roll change, where the angle is within the range of from about 25 to about 75 degrees from the vertical.
Patent CA-2081394-C (CA)
Title: Retainer for pre-hung door
Inventor: SALES CHARLES R
IPC: E06B7/28
Filed: 1992-10-26
Granted: 1995-03-07
Abstract: A retainer for securing and retaining a pre-hung door unit in a closed position relative to a door jamb. The retainer includes a shaped cylindrical plug configured to fit closely in the edge bore of the door. The plug is insertable into the edge bore through the face bore of the door and has lobes extending transversely to limit its entry into the edge bore.    The placement of the transverse lobes maximizes the length of the plug extending from the lobes which enables an end of the plug to extend beyond the door edge into a bore in the strike jamb of the door jamb when the door is closed relative to the door jamb.  A bolt extended through the back of the strike jamb and engaging the plug secures the plug in position and secures the door in a closed position relative to the door jamb.   The bolt may be tightened adequately to clamp the strike jamb to the door edge.  The bolt and the plug are provided with  double  lead  blunt  end threads  for  rapid  assembly  and disassembly. The plug has relieved sides for ease of moving the plug within the edge bore of the door which is a benefit for installing the plug and also is an aid to a door installer.  A cinch ring provided on the plug near the extended lobes prevents lateral movement of the plug in the edge bore.  The configuration of the plug accommodates both circular and rectangular bores that are normally provided in the strike jamb of the door jamb.
Patent CA-2085045-C (CA)
Title: Six piece appliance package
Inventor: BISHOP RICHARD E
IPC: B65D81/05
Filed: 1992-12-10
Granted: 1998-05-05
Abstract: A container for shipping household appliances such as refrigerators, stoves, washers, dryers and the like comprises six separate pieces. The pieces include a top cap, a separate bottom support which may also be in the form of a cap and four separate corner posts which form the package the appliance is placed on or within the bottom support or cap. The four corner posts are then placed on the four corners of the appliance and the top cap is then placed over the appliance and the four corner posts. Two tensile straps are then fastened around the package. Each tensile strap passes around the top and bottom and along two of the corner posts. Optionally, where the package is of the BASILOID* flange type a third strap may be passed horizontally around the top to provide the support for that flange. Optionally the package, with or without the BASILOID* type flange may be over-wrapped with film or enclosed in a clear bag to provide a package which is open on all sides and through which the appliance contained within may be viewed during handling.
Patent CA-2087073-C (CA)
Title: Differential polarization ladar
Inventor: ANDRESSEN C CLIFTON
IPC: G01S7/499
Filed: 1993-01-11
Granted: 1996-07-23
Abstract: The present invention provides a long range LADAR (Laser Detection and Ranging), that employs in combination a 1.32 micron, Q-switched, diode-pumped Nd:YLF laser whose output beam is linearly polarized.  A quarter-wave plate is positioned in front of the laser such that the laser's (e.g. vertical)polarized light is converted to right circular polarization.  Reflection from a specular surface returns left circular polarized light.  A second quarter-wave plate transforms the left circular polarized light to horizontally polarized light which is then propagated through a beam splitter to two Gallium Arsenide Avalanche Photo-Diode detectors.  This invention provides both substantial reduc-tion in eye injury potential and good transmission in the atmo-sphere while improving scattering performance.
Patent CA-2088018-C (CA)
Title: Direct contact water heater with hybrid heat source
Inventor: DALLAIRE MICHEL
IPC: F24H1/10
Filed: 1993-01-25
Granted: 1998-05-05
Abstract: A direct contact water heater having a hybrid heat source, and its method of operation is described.   The water  heater  is  comprised of  an  elongated  vertical tubular housing having a water spray nozzle in an upper end thereof for spraying water substantially uniformly over  a  top  packing  of  heat  exchange  bodies.    An intermediate space is provided below the packing where external  hot  recovery  gases  are  admitted  into  the housing.  A burner chamber is provided at the bottom of the housing above a reservoir to provide a primary heat source.   Heat from the primary heat source mixes with the hot recovery gases below the packing,  and is in counter-current flow with the water percolating through the housing from the packing located at the top of the housing.   Two packings of heat exchange bodies may be provided in the tubular housing spaced from one another with  the  hot  recovery  gases  fed  between  the  two packings and the primary hot gas from the heat source being generated below a lower one of the packings.
Patent CA-2088386-C (CA)
Title: Nitrosamine and nitrite inhibition
Inventor: BLEZARD MICHAEL
IPC: C09K15/32
Filed: 1993-01-29
Granted: 2004-07-06
Abstract: A synergistic mixture of a carbonate and/or bicarbonate with a phosphonate, especially an organoamino methylene phosphonate or an N-oxide thereof, inhibits or reduces nitrosamine contamination during preparation, storage and/or heating of products which are susceptible to contamination with nitrosamine.
Patent CA-2089422-C (CA)
Inventor: ROLES CLEMENCE
IPC: B05B12/00
Filed: 1993-02-12
Granted: 1999-01-05
Abstract: A high pressure water distributor for downpipes. The distributor includes a tube made of a flexible or rigid material having a water tight base and an outlet port. Rain water that is directed into the downpipe is accumulated in the tube and generates a pressure head. As a result of this pressure head the velocity and discharge volume of water from the outlet port increases substantially. The discharged water can be directed through a conventional garden hose, which may be connected to a sprinkler or similar device or the water can simply be conveyed to a remote location from the foundation of the dwelling.
Patent CA-2089807-C (CA)
Title: Air bag system having a control system for determining the exact inflating time of an air bag
Inventor: FUJISHIMA HIROMICHI
IPC: B60R21/01
Filed: 1993-02-18
Granted: 1997-10-07
Abstract: An air bag system able to inflate an air bag at an appropriate time, corresponding to different collision modes, with a simplified construction.  The system is provided with a longitudinal acceleration sensor and an acceleration level computing means which computes the degree of acceleration.  A rate of change computing means computes the rate of change of the acceleration and detects a characteristic of the rate of change, and sends the resultant data to a first judging means.  A first judging means detects the presence of a collision based on the degree of the acceleration and the characteristic of the rate of change of the acceleration.  A second judging means is provided in order to detect the presence of a collision based on the acceleration.  An air bag driving signal outputting means outputs an air bag driving signal based on the judgments made by the first and the second judging means.
Patent CA-2094847-C (CA)
Title: Method and apparatus for removing twine
Inventor: GRAJCZYK MARTIN DAVID
IPC: A01F3/00
Filed: 1993-04-26
Granted: 1995-06-06
Abstract: A twine cutter and method for removing twine, particularly suited for large round bales.  The device consists of a blade with a sharpened cutting edge which is preferably retractable, a spike member generally mounted perpendicular to the plane of the blade, and a handle also generally mounted perpendicular to the blade.  The method has the steps of uncovering the twine using the spike member,extending the blade to cut the twine, wrapping the twine around the spike memberusing it as a capstan, then pulling on the handle to remove the twine.
Patent CA-2105806-C (CA)
Inventor: JEFFS PAUL V
IPC: G06F9/38
Filed: 1993-09-09
Granted: 2001-11-20
Abstract: In a computing system of the type which executes instructions having the form A op B - B, a floating point register includes a plurality of addressable storage elements for storing operand data. A first address receiving circuit receives the B operand address from a first instruction, and a second address receiving circuit receives the A operand address from the first instruction. The A and B operand addresses are each used for addressing one of the plurality of floating point register storage elements. An instruction executing circuit performs a function designated by the first instruction on the operand data output from the floating point register and generates result data. The instruction executing circuit includes an exception circuit for generating exception data indicating whether an exception occurred when the function was performed. A shift register has a plurality of storage elements for storing address and control information. A first address storing circuit stares the B operand address in a selected one of the plurality of shift register storage elements, and a shift register output circuit outputs the stored first instruction B operand address at approximately the time the result data corresponding to the first instruction is generated by the instruction executing circuit. A floating point register storage control circuit stores the result data corresponding to the first instruction in the floating point register storage element addressed by the stored first instruction B operand address as long as no exception occurred when the function was performed. However, the floating point register storage control circuit inhibits the storage of the result data in the floating point register when an exception does occur so that the old B operand value is not destroyed by a probably erroneous value.      An operand queue includes a plurality of storage elements for storing A operand data output by the floating paint register, and a trap queue includes a plurality of storage elements for storing A operand data corresponding to an instruction which generated exception data, and A trap queue data storing circuit stores the A operand data output from the operand queue into one of the trap queue storage elements whenever an exception is detected. The instructions which were executing when the first exception is detected are allowed to complete.
Patent CA-2108006-C (CA)
Inventor: SCRIBNER HERBERT C
IPC: C01B11/02
Filed: 1992-04-21
Granted: 1999-03-16
Abstract: Sodium sesquisulfate produced in crystalline form in a high acidity methanol-based highly efficient chlorine dioxide generating process is converted by metathesis to crystalline anhydrous neutral sodium sulfate and the acid recovered as a result is recycled to the chlorine dioxide generating step. The metathesis is effected by contacting the crystalline sodium sesquisulfate with aqueous sodium chlorate solution, aqueous sodium chloride solution, aqueous methanol or water alone. The metathesis is effected in such manner as to minimize the additional evaporative load imposed on the chlorine dioxide generating process by the metathesis medium.
Patent CA-2108120-C (CA)
Inventor: CHARETTE MARC F
IPC: A61K38/22
Filed: 1992-04-10
Granted: 1997-03-25
Abstract: Disclosed is a method for treating ulcers of the gastrointestinal tract in a mammal which includes administering to the mammal a therapeutically effective amount of Platelet-Derived Growth Factor (PDGF) to the gastrointestinal tract of the mam-mal.