baber/WOPTO huggingface dataset:
Patent CA-2023686-C (CA)
Title: Hazardous waste disposal method and drum assembly
Inventor: HALE JAMES A
IPC: B65F1/06
Filed: 1990-08-21
Granted: 1996-04-23
Abstract: A drum assembly for the collection and disposal of hazardous waste includes an enclosure with an access hole for collecting the waste.  After the waste has been collected, the drum is opened and an insert is positioned to cover the access hole.  The drum is then closed to form a sealed container.
Patent CA-2026315-C (CA)
Title: Device for removing a section cut to length on a power saw
Inventor: MOROSINI FLAVIO
IPC: B23D47/04
Filed: 1990-01-29
Granted: 1996-09-03
Abstract: An elongated piece to be cut is clamped in a vise (9) and is in abutment against a stop (10), the stop (10) being secured on a shaft (11) free to rotate in bearings. The shaft is connected to a connecting rod (19) and a rod (20) of adjustable length to an arm (4) which carries the sawing blade (6), whereby, as the cutting operation is carried out, the stop (10) rises while pivoting and loses contact with the piece being cut before the cutting operation is finished.
Patent CA-2030407-C (CA)
Title: Stamp formed muffler with low back pressure
Inventor: CLEGG MICHAEL W
IPC: F01N1/02
Filed: 1990-11-21
Granted: 1995-11-07
Abstract: The subject invention is directed to a muffler formed from a plurality of stamped components.  The stamped components include at least a pair of plates formed to define an array of tubes there-in.  The tubes include a plurality of unidirectional flow tubes each of which carries a portion of the exhaust gas flowing through the muffler.  The plurality of unidirectional flow tubes communi-cate with an in-line expansion chamber defined within the muffler.  The in-line expansion chamber enables exhaust gas flowing from the unidirectional flow tubes to expand significantly thereby con-tributing to noise attenuation.  The muffler may further include at least one external shell defining a chamber which communicates with the tubes or the in-line expansion chamber.
Patent CA-2030759-C (CA)
Title: Recording apparatus
Inventor: SHINADA YASUYUKI
IPC: G01F23/24
Filed: 1990-11-23
Granted: 1996-03-12
Abstract: A recording apparatus includes a recording unit for ejecting an ink to a recording member, a detection unit for detecting a remaining amount of ink, a memory for storing receiving data, and a control unit for controlling an operation of the recording unit to record an image in accordance with the receiving data, and controlling the memory to store image data in the memory.  The control unit controls the memory in accordance with an output from the detection unit upon completion of recording of a predetermined volume of data, clears data stored in the memory when the output from the detection unit indicates a present of ink, and preserves data stored in the memory when the output from the detection unit indicates an absence of ink.
Patent CA-2032760-C (CA)
Inventor: HEIM PHILIPPE
IPC: B29C39/02
Filed: 1990-12-20
Granted: 1997-06-03
Abstract: Procédé selon lequel, dans une première étape, on prépare un latex élastomère en émulsion aqueuse, en présence d'au moins un agent tensio-actif ionique, d'au moins un monomère éthyléniquement insaturé; puis, dans une seconde étape, on ajoute au latex ainsi obtenu au moins un monomère vinylique, insoluble dans l'eau ou faiblement soluble dans l'eau et on neutralise les charges ioniques portées par ledit latex, en ajoutant au mélange de latex et de monomère, au moins un agent de transfert portant des charges ioniques opposées à celles du tensio-actif utilisé à la première étape, afin de réaliser le transfert des particules du latex dans le monomère vinylique; puis dans une troisième étape, on sépare de la phase aqueuse la phase organique comprenant le latex et le monomère vinylique; et dans une quatrième étape, on effectue la polymérisation en masse de la phase organique entre les deux plaques d'un moule résistant à la température maximale du mélange réactionnel et non réactif ou insoluble au contact de la charge liquide, de manière à obtenir la plaque coulée après refroidissement et démoulage. L'invention concerne également la plaque obtenue par ce procédé. Ce procédé permet d'obtenir économiquement et rapidement une solution de monomère(s) de la matrice, contenant le latex, solution qu'il suffit ensuite de polymériser par une technique de coulée.
Patent CA-2042682-C (CA)
Title: Over-current detector circuit for an enhanced subscriber line interface
Inventor: PAWLOWSKI CHRIS
IPC: H04M3/00
Filed: 1991-05-15
Granted: 1998-10-06
Abstract: An over-current detector circuit used in a Subscriber Line Interface Circuit (SLIC) for validating an over-current condition on a subscriber loop comprising a first counter connected to the SLIC disposed to receive an oversense signal from the SLIC.  The first counter begins counting when the oversense signal is received and produces an output signal when the oversense signal is still active after the counter finishes, denoting a dc over-current in the subscriber loop.  A timer circuit connected to the SLIC also receives the oversense signal. The timer is arranged to begin counting when the oversense signal is received.  A second counter further receives the oversense signal and is advanced by one count on the high to low transition of the oversense signal. The second counter produces an output signal when three counter advances are produced before the timer times out, denoting an ac over-current condition.  A register circuit connected to the first counter and to the second counter is arranged to receive the first counter output signal or the second counter output signal and transmit to a logic interface an over-current signal advising a central controller that an over-current condition exists on the subscriber loop.  Finally, a cut clear pulse generator connected to the register circuit and to a cut relay is also arranged to receive the over-current signal from the register circuit and produce an output pulse that enables the cut relay.  The cut relay then electrically breaks the subscriber loop, isolating the SLIC from the subscriber loop.
Patent CA-2043431-C (CA)
Inventor: PERIOU PIERRE
IPC: B60R25/01
Filed: 1991-05-29
Granted: 1994-11-08
Abstract: The invention relates to a device for monitoring the closure of the opening points of a motor vehicle, in which each opening point is equipped with a closure contact which is connected to a central unit.        It is characterised in that the central unit is connected to all the opening points by means of a single common line (8) with two conductors (31, 32), in that the central  unit  comprises  at  least  one  periodic-signal generator (28) connected to the said two conductors, in that each opening point comprises a passive receiver circuit tuned to the frequency of the periodic signal supplied by the said generator (28) of the central unit, the said passive circuit being connected in series with the closure contact of the said opening point, and in that the said device comprises, furthermore, means for signalling a closure fault which are sensitive to the variations of the signal generated by the generator in response to the actuation of the corresponding closure contact.
Patent CA-2043828-C (CA)
Title: Apparatus for correcting a black level of a video signal
Inventor: KAGEYAMA ATSUHISA
IPC: H04N5/20
Filed: 1991-06-04
Granted: 1996-05-07
Abstract: A pedestal clamping device clamps a pedestal level of an input video signal in response to a predetermined pedestal voltage, and converts the input video signal into a clamped video signal.  A black-level expanding device expands a tone of a black portion of the clamped video signal, and converts the clamped video signal into a black-level expanded video signal.  A color greatest detecting device detects a greatest of color signals of the input video signal.  A adding device adds an output signal from the color greatest detecting device and the pedestal voltage.  A black-level comparing device detects a blackest portion of the black-level expanded video signal; compares the detected blackest portion of the black-level expanded video signal with the output signal from the adding device; and controls a degree of expanding the black tone by the black-level expanding device in response to a difference between the detected blackest portion of the black-level expanded video signal and the output signal from the adding device.
Patent CA-2048260-C (CA)
Inventor: YUNOKI AKIO
IPC: D05B37/04
Filed: 1991-08-01
Granted: 1995-10-24
Abstract: An apparatus for automatically severing a slide fastener chain having a succession of fabric pieces attached to each of the opposed longitudinal marginal edges with a gap portion interposed between each  adjacent pair of fabric pieces comprises a feeding unit; a cutting unit disposed on a feed path for severing the fabric-pieced slide fastener chain transversely across the gap portions; and detecting means for producing a signal only when laterally-aligned gap portions reach  the detecting means.  The detecting means, feeding unit and the cutting unit are electrically connected such that, upon receipt of the signal from the detecting means, the feeding unit is deenergized and at the same time the cutting is energized.
Patent CA-2048319-C (CA)
Title: Paint receptacle
Inventor: STRACHAN DAVID G
IPC: B44D3/12
Filed: 1991-08-01
Granted: 1997-05-27
Abstract: A paint brush receptacle engageable with the peripheral edge of an open paint can comprising a bottom wall, front, back, and a pair of side walls upstanding from said bottom wall and terminating at an open end for receiving paint brushes therein; the bottom wall having an extension projecting exteriorly outwardly therefrom; a leg depending from said extension and spaced from said back wall for insertion into said paint can and releasably engageable with said peripheral edge of said open paint can; a scraper extending outwardly from said extension for scraping paint off said paint brush into said open paint can.
Patent CA-2048460-C (CA)
Inventor: TAKAGI HISAMITSU
IPC: H04M1/02
Filed: 1991-08-06
Granted: 1995-02-14
Abstract: Abstract of the Disclosure A portable telephone set having a cover attached rotatably to a body.  When closed, the cover covers and protects a switch portion of the telephone set, while when opened, it is held in a stable position at a predetermined angle relative to the body by means of a cover holding mechanism.  The cover is held with respect to the body by the cover holding mechanism so that the cover is disengaged from the body when it is about to be opened forcibly beyond an allowable range of its rotation.  Since the cover when opened can function as a sound collector, it is possible to provide a microphone on the body side and attain the reduction in size of the portable telephone set.
Patent CA-2056966-C (CA)
Title: Downhole measurements using very short fractures
Inventor: THIERCELIN MARC JEAN
IPC: E21B49/00
Filed: 1991-12-04
Granted: 2000-04-18
Abstract: A method of performing small scale micro hydraulic fracturing in which fluid is pumped into the test interval until the initiation of a fracture is indicated, immediately after which fluid is pumped out of the interval so as to prevent propagation of the fracture and allow closure thereof, the portion then being repressurised by pumping fluid back in. By pumping out when the fracture is initiated, propagation is substantially prevented allowing estimation of the fracture length and toughness to be obtained and the time taken for the measurement reduced.
Patent CA-2061728-C (CA)
Inventor: OGAWA KAZUFUMI
IPC: B05D5/08
Filed: 1992-02-24
Granted: 1999-08-03
Abstract: A  chemically  adsorbed  film  having  a  surface  layer containing fluorine groups and a stem layer chemically bonded by siloxane bonds to a substrate is formed on the surface of a frictional  portion  of  a  machine  part  such  as  a  gear  or  a bearing or on the surface of a game ball.  An excellently self-lubricating  low  frictional  resistance  machine  part  or  game ball thus can be obtained.  A frictional portion of a gear or the  like,  made of  SiO2 or  like ceramic material,  is dipped and held in a solution containing a surface active material, e.g.,   C F 3 (C F 2 ) 7 (C H 2 ) 2 S i C l 3 dissolved  in  a  non-aqueous  solvent.   A  hydrochloric  acid removal reaction is brought about between SiCl groups of the material,  which  contains  a  fluorocarbon  and  a  chlorosilane group,  and  hydroxyl  groups  numerously  present  on  the  SiO2 surface, thus forming bonds of C F 3 (C F 2 ) 7 (C H 2 ) 2 S i (O-) 3 over  the  entire  frictional  portion  surface.   A fluorine-containing  monomolecular  film  thus   is  formed,   which  is chemically  bonded  to  the  substrate  and  has  a  thickness  of about 1.5 nm.
Patent CA-2061783-C (CA)
Title: Switch housing with magnetic roller plunger
Inventor: HUCKINS CHARLES M
IPC: H01H36/00
Filed: 1992-02-25
Granted: 1996-05-28
Abstract: A plunger-operated switch assembly, useful for sensing the presence of a movable object such as a door or window, in which a magnetic reed contact is actuated by a magnet in the form of a disk-like roller plunger, or by a smaller magnet carried in the center of a roller plunger.  The roller plunger is located in a cavity defined by a housing and projects through an aperture in a face plate including a flange by which the housing can be mounted recessed in a desired location.  The magnetic reed contact is held alongside the cavity containing the roller plunger, so that the housing can be compact.  A magnetic electrical conductor lead connected with a magnetic reed is located so as to be effectively within the magnetic field of the actuating magnet when the roller plunger is depressed a small distance so that the magnetic reed switch is actuated by a small movement of the plunger.
Patent CA-2075100-C (CA)
Title: Process for the production of a composite sheet comprising a cellular core and at least one outer layer
Inventor: MEIER JOHANNES
IPC: B32B7/14
Filed: 1992-07-31
Granted: 2002-07-16
Abstract: process for the production of a composite sheet (90) comprising a cellular core (41) and at least one outer layer (42) by bonding the outer layer (42) to the cellular core (41), for example with the aid of an adhesive film (84) under pressure and at elevated temper-ature, where the adhesive film (84) may initially extend over the entire surface and breaks up in the region of the honeycomb interior under the action of heat and on exposure to a gaseous medium, concentrating at the points of contact between the cellular core (41) and the outer layer (42).      The outer layer (42) itself has an adhesive layer or an adhesive film (83) on the side facing the cellular core. The outer layer bonds to the cellular core under pressure and at elevated temperature.
Patent CA-2077257-C (CA)
Inventor: BEADLE JAMES R
IPC: C07H3/02
Filed: 1991-01-07
Granted: 2002-02-19
Abstract: A process is disclosed for the synthesis of D-tagatose by isomerizing a mixture containing D-galactose with a metal hy-droxide in the presence of a catalyst at a relatively low temperature to form an intermediate metal hydroxide-D-tagatose complex, and then neutralizing the intermediate with acid to yield D-tagatose. The method is also suitable for the synthesis of L-tagatose from L-galactose, and for the recovery of pure tagatose from crude tagatose syrups. Whey, deproteinized whey, or lactose may be used as the raw material for the D-galactose. The lactose in such cases is hydrolyzed to D-galactose and D-glucose before the is-omerization step.
Patent CA-2078206-C (CA)
Title: Textile processing employing a stretching technique
Inventor: COOK PAUL P
IPC: D02J1/22
Filed: 1990-03-29
Granted: 1995-06-13
Abstract: This invention provides methods by which any staple fiber or continuous filament can be stretch processed such that the fiber's internal molecular structure is oriented along the fiber strand axis. With only the simple continuous and simultaneous ap-plication of a single dynamic stretching stress, and a single dynamic twisting force, that is correct and precisely controlled relative to each other and to its input flow rate, every individual fiber is effectively and uniformly stretch processed. Such individual fib-er's net strength properties gain and desirable quality characteristics improvement as well as their continuous cross-sectional un-iformity are substantially enhanced for their greater utility. The methods of this invention can substantially improve the stretch processing uniformity of continuous filament fiber and hold its substantial original extruded evenness allowing multiple series treatments providing substantially improved stretch processing effectiveness and uniformity.
Patent CA-2078423-C (CA)
Title: Method and apparatus for supplementing significant portions of a document selected without document image decoding with retrieved information
Inventor: WITHGOTT M MARGARET
IPC: G06F17/28
Filed: 1992-09-16
Granted: 1997-01-14
Abstract: A method and apparatus for applying morphological image criteria that identify image units in an undecoded document image having significant information content, and for retrieving related data that supplements the document either  from elsewhere within the document or  a source external to the document.  The retrieved data can result from character code, recognition or template matching of the identified significant image units, or the retrieved data can result directly from an analysis of the morpho-logical image characteristics of the identified signifi-cant image units.  A reading machine can allow a user to browse and select documents or segments thereof, and to obtain interactive retrieval of documents and supplemental data.
Patent CA-2079302-C (CA)
Title: Flame retardant composition and method for treating wood
Inventor: HERNDON JAMES F
IPC: C09K21/12
Filed: 1992-09-28
Granted: 2003-06-10
Abstract: A flame retardant composition and associated method for treating wood and other cellulosic materials is disclosed. The composition, in its preferred embodiment, represents and aqueous solution containing a water soluble amide; an oxy-acid of phosphorous; a metal salt of boron; an oxy-acid of boron and sodium hydroxide and has a pH of about 4.75 to about 5.25.
Patent CA-2090573-C (CA)
Inventor: WURDACK KIRK
IPC: B66F1/02
Filed: 1993-02-26
Granted: 2002-04-16
Abstract: An apparatus is provided for lifting modular furniture. The apparatus comprises a central shaft and housing slidably mounted on the shaft. Either the housing or the shaft is supported by a base support and the other of the housing and shaft is moveable. The apparatus further comprises a jig which is adapted to mate with the furniture to be lifted, and means for raising and lowering the jig to thereby raise and lower the furniture. The apparatus further includes a lateral stabilizer which stabilizes the furniture once it is raised off the floor.
Patent CA-2090918-C (CA)
Title: Components for smoking articles and process for making same
Inventor: MEIRING ROBERT LEONARD
IPC: A24D1/22
Filed: 1993-03-03
Granted: 2006-01-17
Abstract: Disclosed are new fuel components for smoking articles such as cigarettes, new methods of making such fuel components, and cigarettes or other smoking articles incorporating the new fuel components. Fuel components for smoking articles are formed by continuously extruding a composition to form a preselected shape, circumscribing the continuously extruded composition with a layer of material to form a wrapped rod or composite member, preferably bonding the fuel element to the layer of material, and cutting the resulting composite member into predetermined lengths for use in assembling smoking articles.
Patent CA-2097701-C (CA)
Inventor: DUNNE STEPHEN T
IPC: B05B1/28
Filed: 1991-12-04
Granted: 2002-02-12
Abstract: The present invention provides a method for discharging a fluid, notably an aqueous medicament solution, as a spray of droplets by causing a fluid to flow through a nozzle orifice (104), which method is characterised in that a secondary flow is in-duced in at least part of the flow of fluid through the nozzle orifice aperture (104) by a direction changing means (106) located within the bore of the nozzle passage, and/or at or immediately adjacent an end of the nozzle passage and/or at or immediately adjacent the nozzle orifice aperture. Preferably the direction changing means induces a secondary flow at the nozzle orifice which is equivalent to at least 10 % of the fluid flowing at an exit angle of 90° to the overall. line of travel of the remainder of the fluid. The invention also provides a nozzle assembly for use in the method of the invention and a spray generating device incorporating the nozzle assembly.
Patent CA-2099148-C (CA)
Title: Process and apparatus for production of toilet paper rolls having no core
Inventor: ISHIZU NOBORU
IPC: B65H19/22
Filed: 1993-06-25
Granted: 2002-11-05
Abstract: Rolls of toilet paper are produced by winding a paper web around each of a plurality of air permeable cylindrical cores each having a fixed, outer diameter while applying a liquid to only a leading portion of each web so that wound webs each having a wet inner portion are formed. After drying the wound webs to integrally bind the inner portion, the core is separated from each of the wound webs. The above method is carried out using an apparatus including a winding device having a shaft to which the cylindrical cores are detachably fitted in a row, a drive device for rotating the cores supported by the shaft and to wind a paper web around each of the cores, an applying device for wetting only a leading portion of each to form a wet inner portion, a releasing device for releasing the wound web-bearing cores from the shaft to obtain arrays of the released, wound web-bearing cores, a drying device for drying the wet inner portion of each wound web, and a separating device for separating the wound webs from the cores. In one embodiment a fusible powder adhesive is applied to only a leading portion of the web.
Patent CA-2100408-C (CA)
Inventor: LUTZ DIETER
IPC: E01C19/48
Filed: 1993-07-13
Granted: 1998-12-15
Abstract: The invention relates to a road paver having a chassis (1) which is provided at the front with a skip (5), exhibiting pivotable side-wall sections, for receiving material (11) to be laid and is provided at the back with a laying plank (4), a conveyor being provided between the skip (5) and a distributing worm located in front of the laying plank (4) in the direction of travel, the skip (5) being open in the direction of the conveyor and the laying plank (4) exhibiting laterally extensible extension planks (13).  In order to be able to close trenches located at the side of a roadway or install verges without any terrain-related or spatial problems arising, it is envisaged that the skip (5) is partially or wholly removable and can be replaced by a skip (7) which can be tipped to one side and is closed on the bottom and, on that side to which the closed-bottom skip (7) can be tipped, a scraper (16) located in front of the corresponding extension plank (13) in the direction of travel can be fitted to the said extension plank.
Patent CA-2107968-C (CA)
Inventor: DOUMAUX ARTHUR ROY JR
IPC: C07C211/14
Filed: 1993-10-07
Granted: 1998-06-30
Abstract: A catalyst composition for the condensation of alcohols with amines to produce an enhanced ratio of acyclic polyamines to other reaction products, comprising a reaction product of: (a) high surface area metal oxides or metal oxide precursors, or mixtures thereof, of metals selected from the group consisting of Groups 3, 4, 5, 6, 8, 12, 13, 14 and 15 of the Periodic Table,  (b) a phosphorous component, and (c) metal oxides or metal oxide precursors, or mixtures thereof, of metals selected from the group consisting of Groups 1, 2, and 3 of the Periodic Table.