baber/WOPTO huggingface dataset:
Patent CA-2064139-C (CA)
Title: Process for preparing pentafluoroethane by hydrogenolysis of chloropentafluoroethane
Inventor: COGNION JEAN-MARIE
IPC: C07C19/08
Filed: 1992-03-26
Granted: 1998-08-11
Abstract: The invention relates to the preparation of pentafluoroethane (F125) by catalytic hydrogenation in the vapour phase of chloropentafluoroethane (F115). The use of a palladium-based catalyst deposited on a support of alumina, of fluorinated alumina or of aluminium fluoride, makes it possible to obtain excellent selectivities in F125 and to avoid the formation of 1,1,1-trifluoroethane (F143a).
Patent CA-2064594-C (CA)
Title: Apparatus for manufacturing sheets
Inventor: TOTSUKA AKIO
IPC: B65H33/06
Filed: 1991-05-30
Granted: 2000-08-29
Abstract: For the purpose of mass-producing sheet pallets made of a synthetic resin with a high productivity and without difficulty, an apparatus for manufacturing sheets is provided, which apparatus comprises a process to feed sheet materials in a predetermined shape and having corner portions, a process to form sheets of a desired shape by cutting at least the corner portions of said sheet materials and a process to stack said sheets.
Patent CA-2077005-C (CA)
Title: Vehicle central tire inflation system
Inventor: BEVERLY JAMES ALDEN
IPC: B60C23/00
Filed: 1992-08-27
Granted: 1997-12-30
Abstract: A tire pressure control system (10) for wheels (28) of a vehicle. The system includes an air control circuit (40) having a positive pressure air source (42), a vacuum pressure air source (44), a central control unit (46), a vehicle speed sensor (47), and a command/display console (48). The control circuit (40) includes valves (62, 64, 66, 68, 70) and a conduit assembly (74) for controlling communication of the positive and vacuum pressure air to wheel valve assemblies (14) mounted on each wheel. A vent valve (86) provides quick venting of positive air pressurein the conduit assembly (74) for effecting rapid closing of a valve device (100) in each wheel valve (14). Each wheel valve also includes a valve device (104) providing substantially unrestricted air flow from the conduit assembly (74) to the wheels when valve device (100) is open and providing restricted air flow from the wheels to the conduit assembly (74) to ensure closing of the valve device (100) when the conduit is vented.
Patent CA-2079602-C (CA)
Inventor: CHANG RON JONG
IPC: H02G15/068
Filed: 1991-04-12
Granted: 2002-03-05
Abstract: A method for covering a substrate comprising the steps of: position-over the substrate (20) an assembly including a recoverable elastomeric eve (12) and a mandrel (42) upon which the sleeve (12) is mounted under tension an expanded condition such that upon release of the tension the sleeve (12) tends to assume a smaller cross-sectional dimension and there-upon cover the  substrate (20)the mandrel (42) having a generally tubular configuration and defining a series of spaced apart substantially longitudi-nal projections (44) extending radially outwardly, the sleeve (12) being in substantial contact with the longitudinal projections (44) and withdrawing. mandrel (42) from the sleeve (12) by sliding the mandrel (42) longitudi-nally away from the sleeve (12) while maintaining its position over the workpiece, the sleeve (12) thereby progressively assuming a smaller cross-sectional dimension to cover the substrate as the mandrel (42) is progres-sively withdrawn. The substrate (20) may be a high voltage termination or cable splice, and the mandrel (42) may include a medial annular transverse tearline enabling breaking and separation of the mandrel (42) into two seg-ments for facilitating withdrawal from, and recovery of the sleeve.
Patent CA-2084181-C (CA)
Inventor: WANG CHIA L
IPC: C08G18/18
Filed: 1992-11-30
Granted: 1997-03-11
Abstract: A two-component polyurethane composition has good shelf stability and the adhesive made by curing the same has good high temperature stability and no adhesion loss after high temperature bake.   The base or pre-polymer component containing a primary hydroxyl interme-diate also has a sufficiently  large excess of free isocyanate so that the ratio of free NCO groups in the prepolymer component to OH curative groups plus any amine groups in the curative component is generally from about 1.2 to about 2Ø  The curative component contains a trimerization catalyst so that upon cure, isocyanurate units are produced.  The system also contains molecular sieves, as well as phosphorous-type adhesion promoters.
Patent CA-2084720-C (CA)
Title: Cordless telephone micro-cellular system
Inventor: EVANS JAMES G
IPC: H04M1/733
Filed: 1992-12-07
Granted: 1997-04-22
Abstract: A cordless telephone system is arranged for extending the operating range of a cordless telephone portable unit within such system.  The cordless telephone system comprises a plurality of cordless telephone stations that plug into any available wall telephone jack and may share the intrapremises telephone wire-pair with one or more existing corded telephone stations without interference. Each cordless telephone station consists of a cordless telephone base unit and its associated cordless telephone portable unit.  Although each of the portable units is associated with a particular base unit, all of the portable units are able to operate with any of the base units in the system.  As a user of a portable unit with a call in progress roams about a premises, all base units monitor the quality of the radiofrequency signal received from the portable unit.  If the signal quality of a base unit actively communicating with the portable unit deteriorates to below an acceptable level, control apparatus in the system identifies another base unit and executes a hand-off of the communication link with the portable unit to this base unit that is then receiving the signal from the handset unit with an acceptable signal quality. Operational control for the base units is provided through a time division multiple access arrangement wherein a communications channel is imposed on the existing premises telephone wire-pair above the audio frequency band used for standard telephone service.
Patent CA-2086046-C (CA)
Title: Apparatus for measuring the effective refractive index in optical fibres
Inventor: DE BERNARDI CARLO
IPC: G01N21/45
Filed: 1992-12-22
Granted: 1996-04-16
Abstract: Apparatus for measuring the effective refractive index of optical fibres, in which a source applies light radiation, the wavelength of which can be varied over a predetermined range,  into a fibre span,  and a detector collects radiation leaving the span and is connected to means  for  measuring  the  intensity  of  the  radiation collected by the detector as the wavelength varies,  in order to determine the oscillation period of the fibre transmittance  or  reflectivity  and  thus  to  obtain  the effective refractive index for the fibre forming the fibre span.
Patent CA-2091838-C (CA)
Title: Autotransfusion system with portable detachable vacuum source
Inventor: OLSON DANIEL HENRY
IPC: A61M5/168
Filed: 1993-03-17
Granted: 2001-07-31
Abstract: An autotransfusion system including a rigid receptacle carrying a blood collection bag internally and a manually operable portable vacuum source (MOPVS) also carried by the rigid receptacle. The system may be configured in a blood collection mode wherein the MOPVS is in flow communication with the interstitial space between the collection bag and the rigid receptacle to cause a negative pressure therein to draw blood from the patient's wound. In a reinfusion mode, the MOPVS is disconnected from the rigid receptacle and is directly connected to the drain tube leading to the patient to drain unwanted fluid from the patient's wound.      The rigid receptacle is inverted and connected to a transfusion line to reinfuse the blood collected within the blood collection bag. The interstitial space is vented to ambient pressure such that the blood within the collection bag is reinfused under force of gravity alone. A hydrophobic vent is connected to the flexible collection bag to vent air collected within the bag to the interstitial space.
Patent CA-2094112-C (CA)
Title: Improved sprayable portland cement-based fireproofing compositions
Inventor: PERITO RICHARD P
IPC: C04B28/04
Filed: 1993-04-15
Granted: 2004-11-23
Abstract: Sprayable fireproofing compositions for structural members such as steel columns are provided, as well as a method of applying multiple coatings thereof. The compositions comprise a Portland cement-based material, stucco, and an accelerator. The compositions eliminate the long setting times typical of Portland cement-based materials, and improve the hangability thereof. The product is produced by dry blending a mixture of Portland cement, stucco (calcium sulfate hemi-hydrate) and optionally, a stucco set retarder and shredded polystyrene aggregate. Upon the addition of water, sprayable slurries are formed which can be pumped to the point of application. An accelerator is added in close proximity to the point of injection. Other additives may also be included, such as starch, adhesives and cement strength enhancers. The slurries adhere to the structural member in the slurried state and after setting to provide excellent fire and heat protection. Because of the relative quick setting time of the slurry upon spray application, multiple coatings can be applied within the same working day.
Patent CA-2094891-C (CA)
Title: Modified silicone oil-in-water emulsion defoaming agent and defoaming method using it
Inventor: TSUDA YASUTAKA
IPC: B01D19/04
Filed: 1993-04-26
Granted: 2001-02-20
Abstract: An emulsion type defoaming agent composition formed by emulsifying 5 to 35 weight parts of an organic fluid, 0.5 to 5 weight parts of a silicone oil, 0.5 to 5 weight parts of a hydrophobic silica and 1 to 40 weight parts of a modified silicone oil into water in the presence of an emulsifier is useful as a defoaming agent for aqueous systems, particularly for strongly alkaline aqueous systems.
Patent CA-2099047-C (CA)
Inventor: MCGREGOR DICKSON J
IPC: E05B65/464
Filed: 1993-06-23
Granted: 1998-05-12
Abstract: An interlock mechanism for a multi-drawer file cabinet assembly, for preventing more than one drawer from being opened at a time.  The interlock mechanism includes a series of control rods mounted for axial movement within a series of blocks located in the interi-or of the cabinet.  The control rods are arranged in an abutting end-to-end relationship, forming joints therebe-tween.  A pivotable lever is mounted to the blocks adja-cent each joint, and an actuator member is mounted to each drawer.  Movement of a drawer to its open position causes engagement of the actuator member with one of the levers, to pivot it to a position in which the lever separates adjacent control rods, resulting in upward or downward movement of the control rods and vertical dis-placement of the joints between adjacent control rods. The remaining levers engage the control rods at a loca-tion spaced from a joint between control rods, to prevent the remaining drawers from being opened.  Movement of the drawer back to its closed position causes engagement of the actuator member with the pivotable lever, to pivot the lever to its inoperative position out of engagement with the control rods.  The control rods are returned to their original abutting position under the force of springs.
Patent CA-2099663-C (CA)
Title: Polypropylene extrusion coating resins and process for the production thereof
Inventor: GLOVER JAMES HARRELL
IPC: C08F2/34
Filed: 1992-10-19
Granted: 1997-12-16
Abstract: Novel polypropylene compositions comprising up to 100 mol % propylene having a melt flow rate of 20 to 150 g/min at 230°C and a total xylene solubles content between 4 and 35 wt. % are disclosed. In addition, a process for the production of the polypropylene composition in gas phase with particular aluminum/titanium ratios and cocatalyst/electron donor ratios is disclosed as well as a process for extrusion coating the polypropylene compositions and the laminated articles prepared thereby.
Patent CA-2099998-C (CA)
Inventor: BAUER MICHAEL E
IPC: H02P25/14
Filed: 1993-07-07
Granted: 2001-09-25
Abstract: An electric tool including a variable speed switch assembly including a potentiometer having a central rotatable member defining a bore with a noncircular cross section and a molded plastic speed control wheel housing the potentiometer. The speed control wheel includes a central post with a cross section corresponding to the cross section of the central potentiometer bore such that the central post can be housed in the central bore in only one relative position with respect to the central rotatable member. The variable speed switch assembly also includes a switch cover having projections which snap into designated holes provided in a circuit board such that the switch cover and the circuit cannot be incorrectly assembled. The switch cover includes a stop member that extends into a semi-circular recess in the speed control wheel to provide mechanical stops so that rotational movement of the speed control wheel corresponds with the range of the potentiometer. The variable speed switch assembly also incorporates a decent arrangement integrated into the switch cover and the speed control wheel and including a resilient finger, the end of which is received in a series of detent grooves in the speed control wheel to maintain the speed control wheel in a desired angular position corresponding to a desired speed setting.
Patent CA-2103911-C (CA)
Inventor: WILLIAMSON WARREN P IV
IPC: B01D21/24
Filed: 1992-12-23
Granted: 1999-08-24
Abstract: A centrifuge provides simplify access to the processing chamber. In one arrangement, the processing chamber separates into a bowl (128) and spool element (130) to receive a disposable processing bag. In another arrangement, the processing chamber pivots between an operating position and an access position to provide improved access. The centrifuge also employs readily ac-cessible holders (80 and 82) for releasably retaining tubing that, in use, conveys fluid to and from the chamber. Though greatly acces-sible, the centrifuge operates without the need of complicated ro-tating seals and expensive disposable components.
Patent CA-2104822-C (CA)
Title: Mgapso molecular sieve and use thereof
Inventor: PATTON ROBERT LYLE
IPC: C01B37/08
Filed: 1993-08-25
Granted: 2004-03-30
Abstract: A novel MgAPSO molecular sieve, containing a critical range of magnesium :in the sieve framework, which is particularly active for hydrocarbon conversion is disclosed. The sieve advantageously is incorporated, along with a platinum-group metal, into a catalyst formulation which is useful in conversion of hydrocarbons and particularly for isomerization. When utilized in a process for isomerizing a non-equilibrium mixture of xylenes containing ethylbenzene, a greater yield of para-xylene is obtained compared to prior-art processes.
Patent CA-2106240-C (CA)
Inventor: SWEET STEPHEN
IPC: B42D9/00
Filed: 1993-09-15
Granted: 1999-01-26
Abstract: There is disclosed herein a bookmark to be attached to the back of a book to separate read and unread pages and which carries indicia-receiving areas for receiving advertising or reader's notes.  The bookmark is a thin elongated rectangular member made of a vinyl, having an adhesive carrying area on the back side adjacent the top edge and an indicia-receiving area on the front side. The bookmark is adapted to be attached to a book back page by the adhesive area, flexes over the unread pages, to be positioned between read and unread pages and have the indicia-receiving area on the front facing the reader so that indicia thereon is oriented and positioned to be read.
Patent CA-2107329-C (CA)
Inventor: CONSTANTIN BONA
IPC: C07K16/00
Filed: 1992-04-10
Granted: 1999-04-27
Abstract: L'invention décrit des anticorps hybrides comprenant une partie de base correspondant à la partie constante de l'immunoglobuline G chez l'homme, un site de combinaison sélectionné pour sa spécificité à l'antigène cible particulier et un site de combinaison se fixant aux lymphocytes T cytotoxiques humains et activant ceux-ci.
Patent CA-2107472-C (CA)
Title: Production of phosphoric acid and hydrogen fluoride
Inventor: ERICKSON WILLIAM R
IPC: C01F11/22
Filed: 1991-12-30
Granted: 2002-07-30
Abstract: Fluosilicic acid is reacted with phosphate rock in order to produce wet process phoshoric acid and calcium fluoride which is later reacted with sulfuric acid to produce hydrogen fluoride and calcium sulfate. The hydrogen fluoride is then stripped from the phosphoric acid and recovered as either anhydrous hydrogen fluoride or concentrated hydrofluoric acid or reacted with alu-minum trihydrate to produce aluminum fluoride; with sodium carbonate to produce sodium fluoride: bifluoride; or with ammo-nia to produce ammonium fluoride/bifluoride.
Patent CA-2108342-C (CA)
Title: Method for sequentially operating refrigeration system with multiple evaporators
Inventor: CUR NIHAT O
IPC: F25B41/04
Filed: 1993-10-13
Granted: 2001-12-04
Abstract: A method and apparatus for sequentially operating a refrigeration system with multiple evaporators is provided in which only one evaporator is operated at a time and is run until a detected demand for cooling associated with that evaporator is satisfied, or until a predetermined time period has elapsed which corresponds to the normal run time for that evaporator. If the run time expires prior to the demand for cooling being satisfied, and if demand for cooling by another one of the evaporators is present, then operation of the first evaporator is terminated and the other evaporator is operated. Efficiency enhancements are provided such as prematurely initiating operation of a second evaporator at the conclusion of operation of a first evaporator if it appears that a demand for cooling by the second evaporator will occur within a short period of time following termination of operation of the first evaporator.
Patent CA-2110867-C (CA)
Inventor: DUNNE MICHAEL J
IPC: B27L11/02
Filed: 1993-12-07
Granted: 1995-08-22
Abstract: A ring flaker has a housing with a back opening so that a blade ring mounted to an arbor assembly can be slid backwards away from the housing to allow the blade ring to be replaced without removing the housing.  This arrangement reduces the down time generally necessary to replace a blade ring in a ring flaker.  The back opening in the housing is of sufficient size to permit the blade ring to be axially withdrawn.  The arbor assembly has a slide arrangement on the ring flaker carriage and there is provision to use a hydraulic jack to move the arbor assembly on the slide arrangement for a distance sufficient for the blade ring to be disconnected for removal and replacement.
Patent CA-2113138-C (CA)
Inventor: HONG SCOTT S
IPC: A42B3/24
Filed: 1994-01-10
Granted: 1996-11-19
Abstract: A replacement sports helmet face shield assembly has a  cold-weather  ventilation  system  for  face  shield defogging  without  circulating  cold  air  through  the interior of the sports helmet.  The assembly has a face shield frame that carries a face shield.  The frame has a lower face shield frame vent and an upper face shield frame vent.  The upper portion of the frame may have an air flow director which, when the assembly is mounted on a sports helmet, directs air entering the upper frame vent.  The directed air flow creates a vacuum that draws air entering the lower frame vent substantially upward along an interior surface of said face shield.  A sports helmet assembly has a versatile, adjustable ventilation system which can operate in a defog-only mode in cold weather, a defog and interior ventilation mode in warmer weather,  and an interior ventilation-only mode when no defogging is desired.   The assembly includes a sports helmet with at least one helmet air entry vent on a front portion of the helmet and at least one air exit vent on a rear helmet portion.  The helmet assembly also includes a face shield frame that carries a face shield and  is rotatably mounted onto the sports helmet.  The frame has lower and upper frame vents located on the lower frame portion.  The helmet entry vent and the frame vents may be selectively opened and closed.
Patent CA-2113462-C (CA)
Inventor: SCHWARTZ MARK E
IPC: C09J7/02
Filed: 1992-06-16
Granted: 2003-12-30
Abstract: This invention relates to means for securing objects together for storage, shipping, or other purposes, In many manufactur-ing plants, packages are at some point grouped with other or packages to facilitate handling, storage, and shipping. Such group-ing is commonly referred to as "unitizing". Perhaps the most common form of unitizing is palletization. The major share of pallet stabilization is being accomplished with stretch wrap. It would be desirable to find a wrapping or strapping material that would avoid the following problems: (4) elimination of excessive amounts of waste material, e.g., used stretch wrap; (5) minimizing ex-cessive looseness of strapping material, which results in movement of packages; and (6) minimizing excessive tightness of strap-ping material, which results in damaging packages. This invention provides means for unitizing objects, e.g., packages, through the use of a stretchable, detackifiable, pressure-sensitive adhesive tape. The tape comprises a highly extensible, substantially non-recoverable backing bearing on at least one major surface thereof a layer of pressure-sensitive adhesive.
Patent CA-2121599-C (CA)
Title: Monoclonal antibodies directed against the microtubule-associated protein tau
Inventor: MERCKEN MARC
IPC: C07K14/47
Filed: 1992-10-17
Granted: 2007-04-10
Abstract: A monoclonal antibody which forms an immunological complex with a phosphorylated epitope of an antigen belonging to human abnormally phosphorylated tau proteine. The tau protein can be obtained from a brain homogenate, itself isolated from the cerebral cortex of a patient having Alzheimer's disease.
Patent CA-2124178-C (CA)
Title: Method of refrigeration case synchronization for compressor optimization
Inventor: OTT JAMES H
IPC: F25B49/02
Filed: 1994-05-24
Granted: 2000-05-02
Abstract: A method of controlling a plurality of commonly piped compressors for a refrigeration system having a plurality of refrigeration cases including the steps of sensing a suction pressure of the refrigeration system, determining whether the sensed suction pressure is within a predetermined pressure range, and turning compressors ON or OFF in stages until the suction pressure is within the predetermined pressure range. The method also includes the steps of sensing a case temperature for each of the refrigeration cases if the sensed suction pressure is within the predetermined pressure range and determining whether the sensed case temperature is within a predetermined temperature range. The method further includes the steps of turning selectively the load of the refrigeration cases ON and OFF until the case temperature is within the predetermined temperature range if the sensed case temperature is not within the predetermined temperature range and ending the method if the sensed case temperature is within the predetermined temperature range.
Patent CA-2125707-C (CA)
Inventor: OSSMAN KENNETH R
IPC: B41J2/44
Filed: 1994-06-13
Granted: 1997-04-29
Abstract: The pre-polygon scanning path length of a raster output scanning system is reduced by replacing a required cylinder lens, or lenses, with two cylindrical mirrors. One mirror with a negative, concave surface and a second positive cylindrical mirror. The first mirror directs the light beam to the second mirror. The second mirror directs the light onto the facets of a rotating polygon to form a focused beam in the vertical axis of the polygon. The function of the two cylindrical mirrors is to act as a telephoto lens to properly focus the image of the laser at the polygon facet while reducing the total pre-polygon path length.