baber/WOPTO huggingface dataset:
Patent CA-2026069-C (CA)
Title: Razor mechanism with slidable cartridge support
Inventor: CHEN EVAN N
IPC: B26B21/22
Filed: 1990-09-24
Granted: 1994-05-03
Abstract: A razor mechanism particularly suited for use with a flexible cartridge having at least one attachment member moveable in a direction toward the longitudinal axis of the razor mechanism in response to the flexing of the razor cartridge during shaving and a cartridge support disposed in contact with the cartridge for assisting the cartridge in returning to a substantially linear configuration.
Patent CA-2026106-C (CA)
Inventor: DUDEK MICHAEL THOMAS
IPC: H04W72/08
Filed: 1990-01-26
Granted: 1999-08-31
Abstract: Un mode de communication adapté pour un système téléphonique sans fil met en oeuvre la communication radio en duplex à division du temps entre un combiné (11) et un poste de base (3), utilisant des salves alternées de transmission sur un seul canal radio. Une fois qu'une liaison radio a été établie, les transmissions initiales acheminent un canal logique de synchronisation (S) et un canal logique de signalisation (D) multiplexés ensemble, mais la liaison peut passer à des salves acheminant un canal logique de communication (B) pour les données vocales ainsi que le canal logique de signalisation (D). La synchronisation des salves se fait par la détection asynchrone de mots se trouvant dans un canal de synchronisation (S). Ces mots comportent des configurations binaires réduisants la probabilité de leur détection asynchrone incorrecte. Si une des parties cesse de recevoir les signaux du combiné provenant de l'autre partie, elle transmet un signal spécial informant l'autre partie. Cela permet aux deux parties de détecter la défaillance d'une liaison presqu'en même temps, de sorte que leurs mesures pour rétablir la liaison sont synchronisées.
Patent CA-2026737-C (CA)
Title: Bus master interface circuit with transparent preemption of a data transfer controller
Inventor: GARCIA SERAFIN J E JR
IPC: G06F13/32
Filed: 1990-10-02
Granted: 1996-01-23
Abstract: A plurality of  specialized controllers,  each one adapted to control a particular type of data transfer operation, control the flow of data between a system bus and a local bus on a computer adapter card.  When the Direct Memory Access (DMA) controller is controlling a DMA operation on the local bus, certain other controllers can break-in to the current DMA operation,  temporarily halting the DMA operation until the other controller has completed its data transfer operation.  To break-in to a DMA  operation,  handshaking  signals  between  the  DMA controller  and  the  local  bus  interface  circuit  are temporarily blocked by blocking signals from a break-in logic  circuit.    The  break-in  circuit  includes  a four-state state machine to block the handshaking signals at the appropriate times, and to signal the interrupting controller to begin its data transfer operation.  When breaking-in  to  a  DMA  operation  in  this  manner,  the operation of the DMA controller is not altered; instead, to the DMA controller,  it appears that the local bus interface circuit is merely slow to respond with its acknowledge handshake.
Patent CA-2030526-C (CA)
Title: Process and device for heat-forming a laminated plastic sheet
Inventor: WINKLER KARL
IPC: B29L9/00
Filed: 1990-04-04
Granted: 1995-12-26
Abstract: This invention relates to a method and apparatus for the heat-forming of a laminated plastic sheet.  In prior known methods and apparatuses the bending of a laminated sheet has resulted in relative movement between the layers of the laminate.  In addition only right-angled bends can be formed.    In the process of the present invention, a uniform bending pressure applied to the regions of the edges of the sheet which are to be bent during the entire bending process such that a uniform tension is exerted on the various laminated layers of the free edge of the sheet.
Patent CA-2034059-C (CA)
Title: Vacuum cleaners
Inventor: LESSIG WILLIAM R III
IPC: A47L5/30
Filed: 1991-01-11
Granted: 2002-12-17
Abstract: A vacuum cleaner has a power brush which projects dirt particles directly into a specially formed and located vacuum nozzle in such a manner that low air consumption can be used. The vacuum nozzle has an inlet extending along the full axial length of the power brush. Inclined grooming brushes may be provided to eliminate wheel tracks. The front wall forwardly of the power brush may be modified to provide front edge cleaning. A cordless upright vacuum cleaner may ad-vantageously be provided having a cleaning performance comparable with that of mains powered upright cleaners.
Patent CA-2035842-C (CA)
Title: Device for detecting rupture in the diaphra gm in a double diaphragm pump
Inventor: LEFEBVRE REMY
IPC: F04B43/00
Filed: 1991-02-06
Granted: 1995-05-09
Abstract: The improved diaphragm failure detection device for a hydraulically operated pump comprising two diaphragms (2,7) tightly gripped on their periphery on a fixed structure comprising an annular part (8) inserted between the two diaphragms (2,7) is such that, as the internal space between the two diaphragms connects with at least one duct (10) linked to an external detector (11) by way of the intermediate annular part, the duct (10) comprises a branch (13) connecting its volume with the atmosphere by way of a capillary pipe (14). <IMAGE>
Patent CA-2036494-C (CA)
Inventor: KWOK TAI W
IPC: F28D7/06
Filed: 1991-02-18
Granted: 1995-06-27
Abstract: A shell-and-tube heat exchanger with a tube sheet having partition grooves used to form joints with partition plates contained within the exchanger head.  The partition plates define chambers within the head of the exchanger which direct the fluid through the exchanger tubes and which allow for the use of an unequal number of tubes per tube-side pass.
Patent CA-2036676-C (CA)
Inventor: OSBORNE THOMAS ALEXANDER
IPC: A61M25/01
Filed: 1991-02-19
Granted: 2002-01-01
Abstract: A lockable sleeve drainage catheter is disclosed for percutaneous insertion into a patient and drainage of fluid therefrom. The drainage catheter includes a flexible distal end that is preformed for retaining the distal end of the catheter that is inserted in the patient. For insertion, the distal end is straightened with the use of a stiffening cannula that is inserted through the hollow passageway of the catheter. When the catheter is inserted in the patient, the stiffening cannula is removed, and a flexible tension member positioned within the passageway of the catheter is drawn to position the distal end in the desired retention configuration. A lockable sleeve positioned at the proximal end of the catheter draws the flexible tension member through the passageway of the elongated member tube to position the distal end in the retention configuration. The catheter also includes a locking collar at the proximal end of the elongated member tube having an annular recess formed therein. The distal end of the lockable sleeve includes an annular step for engaging the recess of the collar and lacking the sleeve in a fixed position relative to the elongated member tube of the catheter. When fully extended and locked, the sleeve and elongated member form a fluid tight interconnection. A Luer lock connector is affixed to the proximal end of the sleeve for connection to a drainage collection system.
Patent CA-2039956-C (CA)
Title: Method for calendering a paper or cardboard web coated at both sides
Inventor: HESS HARALD
IPC: D21G1/00
Filed: 1991-04-08
Granted: 1995-04-25
Abstract: To achieve desired treatment results at both sides of a material web to be calendered, the material web is initially guided through a first nip formed between yieldable elastic surfaces confronting the throughpassing material web.   In the first nip there is predominantly applied a relatively high pressure to the material web.  Then the material web is guided through  a  successively  arranged  second  nip  formed  between practically  non-yieldable  hard  surfaces  confronting  the throughpassing material web.  In the second nip there is applied, apart from pressure, in particular heat to the material web.  The treatment result achieved in the first nip, namely the smoothness and glaze values of the treated material web, are augmented at both sides of the material web to achieve desired treatment effects.
Patent CA-2041511-C (CA)
Title: Dual-acting, reciprocating piston pump
Inventor: DEVRIES JAMES E
IPC: F04B53/12
Filed: 1991-04-30
Granted: 1997-08-12
Abstract: A dual-acting, reciprocating piston pump is provided which comprises a pump body formed with a passageway having  an  inlet  and a  discharge  outlet which receives a piston assembly including a plunger rod carrying a valve plate or spider,  a shovel rod carrying a shovel disc and a rod connector formed with a valve seat which interconnects the plunger rod and shovel rod.  A tubular check valve is carried on the rod connector between the valve seat and the valve plate in sliding contact with the internal wall in the pump body formed by the passageway, which divides the passageway into an upper pumping chamber communicating with the discharge outlet and a lower pumping chamber communicating with the inlet.  A second check valve is located at the inlet to the passageway in the pump body and is movable between an open and closed posi-tion relative thereto.
Patent CA-2042081-C (CA)
Title: Clothes dryer
Inventor: ELLINGSON DAVID I
IPC: D06F58/02
Filed: 1991-05-08
Granted: 1996-12-10
Abstract: A domestic clothes dryer construction which increases dryer capacity by allowing the length of the drum to be increased while keeping the cabinet size the same.  In the present invention, the single rear cabinet panel is used as a drum support, and in so doing, eliminates the separate rear bulkhead structure attached to the rear panel of the dryer in present day dryers.
Patent CA-2050417-C (CA)
Title: Flush apparatus for watering systems
Inventor: SHEETS KEITH
IPC: A01K39/02
Filed: 1991-08-30
Granted: 1994-04-19
Abstract: ABSTRACT     A  flushing  system  for  poultry watering  systems  is provided which  includes  a by pass  of  the upstream pressure regulator,  self  sealing  caps  for  the  stand  pipes  and  an automatic  flush  valve  at  the  end  of  the  supply  line.   A shut-off valve in the by pass is provided which is actuatable manually or automatically in response to a timer, environmental sensor or water condition sensor.  The automatic flush valve opens a response to a predetermined pressure level and connects the supply line to a drain hose.  The self sealing caps prevent leakage out  of  the  standpipes  and  are especially formed to prevent  blow  outs  of  the  seal.   Where  multiple  pressure regulators are used in the supply line,  additional automatic flush valves can be positioned in a by pass line around those regulators.
Patent CA-2055140-C (CA)
Title: Stereoselective catalyst for the polymerization of olefins
Inventor: IISKOLA EERO
IPC: C08F10/00
Filed: 1991-11-07
Granted: 2002-09-17
Abstract: In the invention a procatalyst of a catalyst system of a new type intended for the polymerization of olefins has been prepared comprising a carrier based on a magnesium compound, a titanium compound and a dialkylester of phthalic acid. The most important properties of this kind of a procatalyst are the high stereoselectivity and the high activity. Now it has been possible to increase the activity considerably by using a different kind of dialkylester of phthalic acid having in its alkyl 9 to 20 carbon atoms and the dielectricity constant of which being preferably below 5 measured at 25°C.
Patent CA-2060711-C (CA)
Title: Refrigerator cold control
Inventor: FARR JAMES B
IPC: F25D29/00
Filed: 1992-02-05
Granted: 1996-10-29
Abstract: The present invention is a cold control for refrigerators.  The cold control circuit includes temperature sensitive resistances disposed within the cold box portion of the refrigerator.  The cold control circuit senses the temperature of the cold box portion by a NTC thermistor which is disposed in the cold box portion and connected to the control circuit.  When the temperature rises above the turn-on set point, the NTC thermistor has a relatively small resistance and activates a transistor.  The transistor is connected to a latching circuit which maintains activation of the refrigerator until the thermistor falls below the turn-off point.  Another solid state switch of the control circuit activates the refrigerator com-pressor, such as a transistor turning on an inverter in a DC powered refrigerator and a triac directly supplying current in an AC powered refrigerator.  For battery powered refrigerators, the cold control includes a clipping circuit to prevent false activation or de-activation of the inverter caused by ripple voltages.  The present invention provides the reliability of a solid state temperature sensor while avoiding the expense of a microprocessor driven system.
Patent CA-2066876-C (CA)
Inventor: HOYT MATTHEW B
IPC: D01F1/04
Filed: 1992-04-22
Granted: 1999-12-14
Abstract: A process for preparing melt spun polymeric fiber made from polymerized amide monomers includes the steps of pigmenting the polymer, incorporating within the polymer sufficient SO3H groups or salts thereof to give the polymer a sulphur content of between about 10 and about 160 equivalents per 10 6 grams polymer and thereafter chemically blocking with a chemical blocking agent a portion of amino end groups present in the sulphonated polymer.
Patent CA-2067055-C (CA)
Inventor: DENIS PHILIPPE
IPC: B01J31/20
Filed: 1992-04-24
Granted: 1997-02-04
Abstract: La présente invention a pour objet un procédé de préparation de l'acide adipique par réaction de l'eau et de l'oxyde de carbone sur au moins un acide pentènique, en présence d'un catalyseur à base d'iridium et d'au moins un promoteur iodé, à une température comprise entre 100.degree.C et 240.degree.C, sous une pression supérieure à la pression atmosphérique, dans au moins un acide carboxylique choisi parmi les acides carboxyliques aliphatiques saturés, les acides carboxyliques aliphatiques éthylèniques et les acides carboxyliques aromatiques, comportant au maximum 20 atomes de carbone, le rapport atomique I/Ir étant inférieur à 10.
Patent CA-2070597-C (CA)
Title: Affixable portable mini-safe
Inventor: PASTOR PASCAL
IPC: E05G1/00
Filed: 1992-06-05
Granted: 2003-09-30
Abstract: A small, portable safe for the storage of valuables includes a main safe housing having an access hole with a peripheral edge and connector openings extending into this edge. Each opening has a lateral bayonet-shaped notch at the bottom thereof. A circular cover to close the access hole has tabs distributed about its periphery on the inside of the cover. These tabs are insertable into respective ones of the openings, after which the cover is rotated to locate the tabs in the notches. Bramah locks are mounted in the housing, each with a latch movable into a respective one of the openings in order to prevent the tab from being extracted from the notch. A second version has a circular mounting plate with an upwardly extending short flange extending about its periphery. This plate has a central opening to accommodate a mechanism for securing the safe housing to the mounting plate.
Patent CA-2077379-C (CA)
Title: Tracking the reproduction of documents on a reprographic device
Inventor: VINCETT PAUL STAMFORD
IPC: H04N1/21
Filed: 1992-09-02
Granted: 1999-02-16
Abstract: An apparatus for capturing and recording the content, ownership, and/or bibliographic source of documents reproduced on a reprographic device, and more particularly for tracking the reproduction of specified information, especially copyrighted documents, is connected, preferably detachably, to any of various reprographic devices. The apparatus includes a digitizer for digitizing desired pages (such as those containing title and author information) output from a main portion of the reprographic device, a recording device and medium for storing said digitized pages, a counter for counting the number of reproductions made and optionally inferring the number of originals, a controller for controlling the operation of the apparatus and, optionally, a control panel for interacting with the operator of the reprographic device. When reproducing copyrighted information, an operator makes a reproduction of the pages containing title and author information, digitized images of these pages being stored on the recording medium. The counter counts the total number of copyrighted and other reproductions made, the counted number of reproductions also being recorded on the recording medium. The recording medium is then used to determine the number and nature of copyrighted reproductions made by the reprographic device. The device may also be used for other applications where reproduction of particular types of documents is restricted, or for storing document contents as part of an information storage and retrieval system.
Patent CA-2077652-C (CA)
Title: Turbidity measurement
Inventor: JOYCE JOHN GARETH
IPC: G01N21/85
Filed: 1991-03-06
Granted: 2002-06-11
Abstract: In measuring the turbidity of a liquid, especially for determin-ing water clarity in a water purification process in which after the ad-dition of flocculant the water is centrifuged, light is emitted as a dif-fuse beam from a light source (11) and the intensity of light reflected from gas bubbles in the liquid is detected by a photosensor (12). The light source and photosensor are incorporated in a probe (6) having transparent cylindrical wall (7) and sealed within a housing (1) con-fining a liquid receiving chamber (2) by a pair of seals (9) between which is formed a space (10) containing cleaning solution. An actua-for (18) is coupled to the probe (6) for reciprocating he probe relative to the housing and seals (9) for cleaning, deposits from the, wall (7).
Patent CA-2085400-C (CA)
Title: Power selection and protection circuit for inverter power supply
Inventor: REYNOLDS JON O
IPC: B23K9/10
Filed: 1992-12-15
Granted: 2003-07-01
Abstract: An inverter power supply for use with various voltage inputs is provided. The inverter power supply generally receives 208 VAC single-phase, 208 VAC three-phase, 230 VAC three-phase, 230 VAC single-phase, 460 VAC single-phase, or 460 VAC three-phase power and provides a DC output current for welding, heating or cutting applications. The power inverter circuit includes a first tank circuit and a second tank circuit which are configured in ;serial or parallel according to a particular voltage input. Contactors, relays, or semiconductor switches respond to control signals from an AC sense circuit in order to configure the inverter power supply for the appropriate voltage input.
Patent CA-2085487-C (CA)
Inventor: WENDELIN GEORG
IPC: B29C48/691
Filed: 1991-07-11
Granted: 1997-10-21
Abstract: La présente invention vise un appareil de filtration pour matériaux thermoplastiques, constitué d'une enveloppe (1) à l'intérieur de laquelle un élément (4) en forme de piston, servant de support à deux batteries de filtres (8, 9), est monté de manière à pouvoir se déplacer longitudinalement le long de l'axe de cette dernière. Lorsque l'appareil est en position de filtration, le matériau en fusion s'écoule d'une tubulure d'alimentation (2), entre dans des tubulures d'admission par lesquelles il est acheminé jusque dans les espaces distributeurs (14, 15) situés devant les batteries de filtres (8 ou 9), puis traverse les filtres, entre dans des tubulures de sortie (18,19) puis dans une tubulure de décharge (3). Chaque espace distributeur est subdivisé en sections par au moins une cloison (21), chaque section comportant une ouverture destinée à recevoir une tubulure d'admission (10, 13). Parce que l'élément support (4) peut être déplacé sur un axe longitudinal, chaque batterie de filtres peut être amenée à une position différente de rinçage à contre-courant. Dans ces positions, toutes les tubulures d'admission, sauf celle reliée à la batterie de filtres soumis au rinçage, sont fermées, la seule tubulure ouverte agissant comme tubulure d'évacuation du matériau détassé et des impuretés qu'il contient; celui-ci est acheminé, à travers l'élément support (4), par une tubulure de chasse (23), jusqu'à un collecteur (16 ou 17) situé derrière la batterie de filtres (8 ou 9) soumis au rinçage.
Patent CA-2088198-C (CA)
Inventor: MAINE LESLIE
IPC: B29C63/34
Filed: 1993-01-27
Granted: 1995-10-10
Abstract: A method of lining a pipeline (24) intended to carry gas, oil, water, sewage or chemicals in which a cross-linked polymeric liner pipe (10), which has been reduced from its original diameter to a lesser diameter or to a shape of reduced maximum dimension, is pulled through the pipeline (24). The lesser diameter is less than the least inner diameter of the pipeline (24). After the liner pipe (10) has been fully pulled through, the pipe liner (10) is heated by means of a source (60) of visible or infrared radiation forming part of a pig assembly (50) to cause it to revert to the pipeline.  The pig assembly or assemblies are stationary at zones (70) where service connections are to be made.  Subsequently, the remaining liner pipe (10) is reverted by pulling the source (60) through the liner pipe (10).
Patent CA-2089132-C (CA)
Inventor: GUERET JEAN-LOUIS H
IPC: A46B9/06
Filed: 1993-02-09
Granted: 2002-09-17
Abstract: Le pinceau comprend des poils (2a, 2b) disposés sensiblement parallèlement les uns aux autres, fixés en touffe sur un support. Les poils sont constitués par un mélange de poils (2a) de petite section, ou petits poils, et de poils (2b) ayant une section plus importante, ou gros poils, la proportion de gros poils étant comprise entre 2 % et 95 % en volume par rapport au volume total de la touffe du pinceau.
Patent CA-2097557-C (CA)
Inventor: KILGORE WILLIAM BRUCE
IPC: G06F3/048
Filed: 1993-06-02
Granted: 2001-05-29
Abstract: A graphics display has the capability of displaying both alpha numeric images and graphic images and properly blending these images. The blending is done timely and efficiently while still utilizing a memory structure wherein the graphic pixmap is stored in one memory and the alpha pixmap is stored in a second memory. A priority value is assigned to each pixel of display. The priority value indicates what the desired display structure is to be. The priority value, the graphic pixel value, and the alpha pixel value are all polled and the appropriate pixel value is transmitted to a display device.
Patent CA-2097956-C (CA)
Title: Apparatus and method for providing accurate layer registration for multiple layer electronic printing systems
Inventor: CURRY DOUGLAS N
IPC: H04N1/12
Filed: 1993-06-08
Granted: 1998-08-18
Abstract: An apparatus and method for providing accurate layer registration for multiple layer electronic printing systems discloses a means and a method of reducing the positional scan-to-scan error in a multiple layer electronic printing systems, typically multi-bearm laser raster output scanners, in which accurate layer registration is critical. The method comprises determination of a time delay between page sync signal and start-of-scan signal, using this delay to determine delay dependent offset factor called the phase registration parameter, and correctively mapping image data to proper output channels based on the phase registration parameter and the laser number. The phase registration parameter must be determined at the beginning of each scan layer and the offset factors must be re-adjusted based on the new phase delay.