baber/WOPTO huggingface dataset:
Patent CA-2161717-A1 (CA)
Title: Power Transmission Sheave
Inventor: WHITENIGHT DONALD RUSSELL
IPC: F16H55/49
Filed: 1995-10-30
Abstract: A sheave structure adapted to prevent the build-up of soil and other foreign materials in the v-grooves of sheaves utilized with ground engaging implements such as rotary tillers is provided.  The sheave is constructed of mating halves, which when joined form a sheave with a v-groove that includes circumferentially spaced apart openings in the v-groove apex, below the belt contact area of the flanges. The openings are provided adjacent to, but below the belt contact area so that the  belt pushes against any materials that collect in the v-groove. In this way, the belt serves to break apart the materials and push them through the openings.  With this structure, accumulations of materials in the sheave are minimized, belt contact with the sheave flanges is improved and power transmission is enhanced.
Patent CA-2161806-A1 (CA)
Inventor: REINERT GARY L SR
IPC: D06F95/00
Filed: 1994-05-06
Abstract: Decontamination laundering facilities and methods are disclosed including a washer area (12), a filtering area (36) automatically monitoring and controlling cleaning fluid quality discharged to the environment, a clean area (2), automatic and controlling air quality in the washer area (12), in the filtering area (36), in the clean area, and as discharged to the outside environment, and apparatus and methods for automatically timing waste water sampling, exhaust air sampling, and containment area air sampling. Automatic timing (68) includes controlling and actuating the date and time of day for taking a sample and the duration of the timing cycle, and relay means for closing and opening various circuits connected electrically to timer contacts for energizing components of the waste water sampling, exhaust air sampling, and containment area (8) air sampling. In one aspect, a tri-way valve (60) passes a portion of waste water into a discharge pipe at all times and an electronic level control (79) monitors and fills a waste water sampling container (66) to a predetermined level. In one aspect, a first high volume pump (92) and membrane filter cassette (90) collects air samples from a containment area in the laundering facility and a second high volume pump (93) and membrane filtor cassette collects air samples from a HEPA air filtration machine (36). Contaminants include asbestos, and/or lead, silica dust, titanium dioxide dust, or carbon dust. Contaminated material includes woven and non-woven fabric, permeable and impermeable clothing.
Patent CA-2162079-A1 (CA)
Title: Integral disc seal
Inventor: COLLINS LARRY
IPC: F01D11/00
Filed: 1995-11-03
Abstract: A disc for use in an axial flow turbomachine having a main flow annulus which includes an inner flow boundary defined by axially adjacent stator vane and rotor blade platform sections. The disc comprises an axially extending sealing member which extends from its radially outer periphery to bridge the gap between adjacent rotor blade and stator vane platform sections. The sealing member is formed integrally with the disc. The arrangement minimises the unsealed stator well region between the rotatable and non-rotatable platforms and thereby provides for improved operational flow stability.
Patent CA-2164263-A1 (CA)
Title: Procede d'acquisition en medecine nucleaire d'une image en transmission
Inventor: BOURGUIGNON MICHEL
IPC: F02F1/14
Filed: 1995-12-01
Abstract: Pour acquérir à la fois une image de transmission et une image d'émission en médecine nucléaire, on choisit de détecter l'image d'émission en validant les événement radio-actif qui se produisent dans la gamme nominale du marqueur radio-actif choisit. Pour l'image de transmission on choisit des gammes d'énergie plus basses correspondant à la production de photons Compton au moins tertiaires ou secondaires. On montre qu'on peut reconstruire de cette façon une image de transmission sans artefact. Cette image de transmission est utilisée pour corriger l'image d'émission initialement acquise. On montre qu'on peut acquérir les deux images en même temps.
Patent CA-2167743-A1 (CA)
Title: Appareil et methode d'interconnexion de fibres optiques
Inventor: TAMARU NAOYUKI
IPC: G02B26/08
Filed: 1996-01-22
Abstract: L'invention concerne un procédé d'inhibition de la pénétration cellulaire de virus de l'immunodéficience humaine (VIH) chez des individus séropositifs, constituant en l'administration auxdits individus d'une quantité efficace d'azaspirane substitué.
Patent CA-2168173-A1 (CA)
Title: Wallet Tether
Inventor: MARCARELLI HAWK R G
IPC: A45C1/06
Filed: 1996-01-26
Abstract: A wallet tether is removable from a wallet or the like to which it is secured,  to provide for use of the wallet in more formal situations where such a tether would be unsightly.   The tether includes an openable loop which is securable about a belt, belt loop, or other appropriate structure of the apparel of the user, and an eyelet which is secured to the wallet by a threaded fastener which is passed through a hole in the wallet periphery.          Thus, the wallet may be opened and the contents accessed without need to remove the tether from the wallet.  An elongate, flexible cord extends between the apparel attachment loop and the wallet attachment eyelet.   The cord may be non-metallic,  in order to reduce to a minimum the amount of metal in the device to preclude requirement  for  removal  for  passage  through  metal  detectors.          Preferably, the cord ends are secured to the openable loop and to the wallet attachment eyelet with crimp connections, for strength, durability, and economy of manufacture.
Patent CA-2169407-A1 (CA)
Title: Communication process in a radio communication system with mobile terminals using the radio interface standard cai-ct2
Inventor: DESSEIGNES CHRISTOPHE
IPC: H04W36/08
Filed: 1996-02-13
Abstract: The present invention relates to a communication process in a radio communi-cation system with mobile terminals, in conjunction with at least one fixed base station, using the radio interface standard CAI-CT2, in which during the establishment of a communication between a base station (10) and a mobile terminal (15), the base station supplies the mobile terminal (15) with a radio link reference, which is a function of the identity of said mobile terminal (15).  This link reference enables another base station in the network to distinction a handover request from a private communication establishment request.
Patent CA-2170154-A1 (CA)
Title: Hand-held implement for cleaning smooth surfaces
Inventor: VON GROLMAN TASSILO
IPC: A47L1/06
Filed: 1994-09-07
Abstract: The invention relates to a hand-held unit (200) for cleaning smooth surfaces and for squeegeeing liquid. The hand-held unit is made up of a cleaning unit (230) with a handle (234) and a wiper plate (238) as well as of a squeegeeing unit (232) with a rear stop (252) of the squeegeeing unit (232). A handle (236) of the squeegeeing unit (232) can be pushed telescopically into a tubular handle (234) of the cleaning unit (230) until a stop edge (252)  of the squeegeeing unit strikes against a front stop edge (242) of the wiper plate (238). The two units (230, 232) can be held, by at least one latching and/or frictionally locking connection, in the position in which they are pushed one inside the other to provide the hand-held unit (200), and can be released from one another by hand. Consequently, for the connection of the two units (230, 232), there is no need for any additional shaping or parts which obstruct the combined or separate handling of the units.
Patent CA-2177201-A1 (CA)
Title: Universal cover plate
Inventor: MALTBY EDGAR W
IPC: H02G3/14
Filed: 1996-05-23
Abstract: A method and apparatus for converting a universal cover plate for an electrical outlet to any desired specific cover plate. The apparatus includes a base having removable tabs and hinges. To create the desired cover plate, the appropriate tabs are removed to leave apertures that accommodate the desired standard electrical outlet such as a light switch or socket. An optional cover may have removable hinges that allow the cover to open along more than one axis. To make a base that fits with a lid hinged on its longer side, hinges on the shorter side are removed, by prying, sawing, or cutting. Alternatively, to make a base that fits a lid hinged on the shorter side of the base, hinges on the longer side are removed. If a base with no cover is desired, all the hinges may be removed.
Patent CA-2177971-A1 (CA)
Inventor: MARSH DAVID A
IPC: C11D3/00
Filed: 1994-12-28
Abstract: A composition and method for cleaning and disinfecting of contact lenses that employ an electrical field applied to a lens that causes contaminating deposits to migrate therefrom is described. The composition of the invention includes a pair of component materials having different electrochemical potentials wherein the materials are substantially contained in a form wherein each material remains sufficiently physically separated when in contact with opposite sides of the lens such that the difference in electrochemical potential between the two materials is sufficeint to cause charged contaminating deposits to migrate from the lens. The method of the invention requires placing a contaminated lens between a pair of component materials having different electrochemical potentials wherein physical separation is maintained, preferably, by including one of the components in a gel while the other component is in solution or another gel. Preferably one component of the pair of materials is an oxidizing agent while the second component is a reducing agent. An example of a suitable pair is hydrogen peroxide suspended in a carbopol gel and a solution of sodium theosulfate, as the reducing agent. A lens is coatd with the oxidant gel, placed in the reductant solution and held at room temperature for 2-4 hours, wherein the electrochemical field established between the pair achieves about a 29 % protein removal.
Patent CA-2181222-A1 (CA)
Title: A cast orthopaedic implant and method of making same
Inventor: COMPTON RICHARD C
IPC: A61L27/04
Filed: 1996-07-15
Abstract: A method of forming a cast orthopaedic implant having a porous surface layer is disclosed. The method includes placing a porous layer on a wax replica of the implant such that a portion of the pres of the layer are filled with the wax material. The wax replica and porous surface layer are coated by a ceramic material consistent with investment cast technology. The ceramic material fills the remainder of the pores of the porous layer. After the ceramic material is solidified, the wax material is melted away leaving a cavity within the ceramic material. The pores once filled by wax are now exposed and extend into the cavity. A molten metal is poured into the cavity and partially melts the exposed porous layer to form a melt bond with the molten metal. When the metal is cooled, the ceramic material is stripped away exposing the portion of the porous layer previously filled with the ceramic medium.
Patent CA-2181565-A1 (CA)
Title: A method and system for transferring heating and/or cooling power
Inventor: LESKINEN SEPPO
IPC: F24F3/10
Filed: 1995-01-23
Abstract: The invention relates to a method and system for transferring heating and or cooling power from the distribution networks to the heating or cooling networks (21, 22) of the building by means of a heat exchanger or heat exchangers (11 12). To lower the costs, the same heat exchanger or heat exchangers (10, 11) are arranged to be used for the transmission of heating power in the heating period and the transmission of cooling power in the cooling period.
Patent CA-2184419-A1 (CA)
Inventor: BYRNE KEVIN P
IPC: G06F3/023
Filed: 1996-08-29
Abstract: Determining by a keyboard the pressure that an operator exerts on individual keys of the keyboard and immediately alerting the operator if the pressure is excessive. In a first embodiment, the keyboard alerts the operator to excessive pressure by means of an audio alarm. In a second embodiment, the keyboard transmits the pressure information to a connected computer. The computer can alert the operator with an audio message or alert the operator by displaying the alerting information on the computer screen being utilized by the operator. By alerting the user in these manners, the operator is provided feedback that is immediate and consistent. This allows the operator to modify their behavior so that they no longer misuse the keyboard by striking the keys hard. In addition, an operator may onlystrike certain keys with excessive force. In the second embodiment, the connected computer is responsive to the key pressure information to maintain statistics indicating which keys are been excessively struck. The operator can then access the statistics in order to assist the operator in correcting the problem of striking the keys too hard.
Patent CA-2186456-A1 (CA)
Title: Single temperature stage crystallization to recover paraxylene
Inventor: FREMUTH ALEXANDER DIETMAR
IPC: C07C6/12
Filed: 1995-03-20
Abstract: This invention is a crystallization process for p-xylene recovery. A single temperature crystallization stage (18) is used for producing p-xylene from a feed having an above equilibrium p-xylene concentration, such as from toluene disproportionation.
Patent CA-2186649-A1 (CA)
Title: Magazine for automatic feed blind rivet setting tool
Inventor: HOPKINS JAMES L
IPC: B21J15/16
Filed: 1992-11-10
Abstract: A magazine for holding a quantity of blind rivets ready for use in an automatic rivet setting tool where the quantity of rivets are connected in spaced relation along the length of an elongated strip of thin flexible material by having a distal portion of each rivet inserted therethrough.
Patent CA-2187969-A1 (CA)
Title: A template for solution phase synthesis of combinatorial libraries
Inventor: BOGER DALE L
IPC: C40B50/08
Filed: 1996-10-16
Abstract: This invention features a template for synthesizing combinatorial libraries, methods of synthesizing combinatorial libraries of chemical compounds utilizing the template, and combinatorial libraries of chemical compounds formed by the methods of this invention.
Patent CA-2190082-A1 (CA)
Inventor: CHANG CHE-YUAN
IPC: A47K7/02
Filed: 1996-11-12
Abstract: A bath scrubber comprises scrubbing nets, fastening members, and at least one connection member. The scrubbing nets are provided with an axial hole and are curved respectively along the axis thereof such that the outer edges of the scrubbing nets are corrugated irregularly. The scrubbing nets are held in series by the fastening members such that the axial hole is separated into a first through hole and a second through hole, in which the connection member is received so as to enable the scrubbing nets to be located easily and securely on a bather's body at the time when the bath scrubber is at work.
Patent CA-2193287-A1 (CA)
Title: Circuit arrangement for the production of voltage pulse sequences, in particular for the operation of dielectrically impeded discharges
Inventor: HUBER ANDREAS
IPC: H05B41/34
Filed: 1996-12-18
Abstract: Circuit arrangement for the production of voltage pulse sequences, in particular for the operation of dielectrically impeded discharges.        An electrical circuit arrangement for the production of voltage pulse sequences, in particular for the operation of dielectrically impeded discharges, has a charging circuit, with a charging capacitor (C2), fed with an input voltage (U x), a discharge and pulse circuit with a fast controllable switch, in particular with an IGBT (T1), which is connected to a clocked drive circuit (A), and a pulse transformer (TR1) with a load (L) connected thereto, and a feedback circuit with a feedback rectifier, for example semiconductor diodes (D3-D4) and a feedback energy accumulation circuit, for example a buffer capacitor (C1) connected in parallel with the input of the charging circuit. During each phase in which the IGBT is on, the electrical energy stored in the charging capacitor (C2) is transferred via the pulse transformer (TR1) to the load (L). The energy reflected from the load (L) and the pulse transformer (TR1) passes through the feedback diodes (D3-D5), is fed to the feedback point (R) and is received by the buffer capacitor (C1). During the reflection phases, the potential of the secondary winding is thereby clamped to the potential of the input voltage (U x). Furthermore, the energy fed back is in this way used as a contribution for the charging phases of the charging capacitor (C2).
Patent CA-2195153-A1 (CA)
Inventor: LAM DENNIS K W
IPC: G02B6/34
Filed: 1997-01-15
Abstract: A surveillance system for in-service fault identification in an amplified passive branched optical network is provided. This system does not require any wavelength tunable light source as used in multi-wavelength OTDR. Fiber-Bragg gratings are placed at some strategic positions on different fiber branches to slice and reflect the optical amplifier's residual ASE power at some wavelength other than the signal wavelengths. The conditions of the fiber link and optical amplifier at each branch can be monitored by constantly checking the reflected power level of the corresponding wavelength without suspending the in-service channels.
Patent CA-2199633-A1 (CA)
Title: Transition crib for infants and toddlers
Inventor: CHISHOLM JOHN H
IPC: A47D7/04
Filed: 1995-07-10
Abstract: A crib (10) having a headboard (12), a footboard (18), and opposite side gates (20, 22) surrounding a horizontal mattress support platform (30) adjustably attached to the headboard (12) and footboard (13) and being selectively positionable at various levels. One of the side gates (22) is removable to facilitate placement of the child bed (10) alongside a parent's bed (100) such that the mattresses are disposed in adjacent, co-planar relation. An apron (40) attached to the mattress support platform (30) is extendable for insertion in sandwiched relation between the mattress (110) and a mattress support (112) of the parent's bed (100), effectively interconnecting the crib (10) and bed (100) while preventing objects such as baby bottles from falling therebetween. A wheel assembly (50) and brake structure (58) associated therewith may be added so that movement of the crib (10) may be selectively accomplished while inadvertant movement or travel of the crib (10) is prevented.
Patent CA-2200535-A1 (CA)
Title: Electrosurgical gas attachment
Inventor: STODDARD ROBERT B
IPC: A61B18/12
Filed: 1997-03-20
Abstract: A circuit (10) concurrently activates a gas flow control valve (15) and electrosurgical generator (11) from an electrosurgical pencil (13). An automaticswitch (16) receives current flow upon the operation of the energy request button (12) by the surgeon. The switch connects to the gas surgical unit (26) flow control valve (15) operating it to control inert gas to the pencil.  An electrode (32) and nozzle combination (30) transports ionizable gas to a tip (31) on the pencil for gas enhanced electrosurgery on a patient. An electrode (32) has proximal and distal ends (34) with a length (35) between and along an axis. A shroud (36) surrounds the electrode (32) along its length (35) leaving the proximal and distal ends (34) exposed. A patient part (37) on the shroud (36) points toward the patient. A rear part (38) on the shroud (36) points toward the rear or the pencil. The parts align substantially along the axis so a passage (39) between the parts defines a space(40) within the shroud (36) and about the length (35). A port in the shroud (36) has a lumen (42) protruding therefrom at an angle to the axis. The lumen (42) connects with the passage (39) for fluid communication. An end cap (43) attaches to the proximal end (33) for surrounding the electrode (32) and for forming a gas tight seal between the proximal end (33) and the rear part (38) of the shroud (36). A complimentary portion (44) on the rear part (38) and an anti rotation lock (45) on the end cap (43) engage to prevent relative rotary motion. An anti twist posterior (46) on the end cap (43) interengages with the pencil to prevent relative rotation. The anti twist posterior (46) and the pencil each have hexagonal interengaging features thereon. The shroud (36) and end cap (43) are of polymers that can be injection and overmolded, respectively to the electrode (32). A method makes a gas tight seal between a shroud (36) and an electrode (32) by injection molding then fixturing the electrode (32) without contact with the shroud (36). Overmolding an end cap (43) to the shroud (36) attaches the electrode (32) and to form the seal.
Patent CA-2201401-A1 (CA)
Inventor: BROWNELL WILLIAM JOSEPH
IPC: G01C9/26
Filed: 1997-04-01
Abstract: In a tool for finding level, plumb or forty-five degrees, it is known to have a fixed length.  In this invention the main body of the level has two moving sliders which  move outwards, one from each end.  These sliders are secured in place at the length desired for the application.
Patent CA-2202107-A1 (CA)
Title: Footwear having a sole with adherent material release grooves and flexibility enhancing recesses
Inventor: BELL JONATHAN
IPC: A43B13/24
Filed: 1997-04-08
Abstract: An ice-gripping sandal for releasable mounting on the foot of a person or on the sole of a boot or other primary footwear worn by the person.  The sandal comprises a sole, a toe strapping assembly and a heel strapping assembly for mounting the sandal on the boot.  The sandal's sole has a bottom surface having plural groups of cleats projecting therefrom.  Some of the cleats are located within a forefoot and toe portion of the sole and extend at an acute angle to the longitudinal axis of the sole.  These cleats include end portions having respective ice-gripping screws mounted therein.   Grooves are provided between the cleats in the forefoot and toe portions of the sole, with the width and depth of the grooves increasing from the medial side of the sole to the lateral side of the sole.  The grooves enable material which may tend to adhere to the sole within the grooves to be forced out of the grooves when the wearer walks.  In order to increase the flexibility of the sole plural recesses are provided in the arch region contiguous with the forefoot portion.
Patent CA-2204858-A1 (CA)
Title: Process for making copper metal powder, copper oxides and copper foil
Inventor: PECKHAM PETER
IPC: C25C1/12
Filed: 1996-06-17
Abstract: A process for making copper metal powder from copper-bearing material (10), comprising: (A) contacting copper-bearing material (10) with a leaching solution (70) to dissolve copper ions and form a copper-rich leaching solution (74); (B) contacting said copper-rich leaching solution (74) with an extractant (84) to form a copper-rich extractant (90) and a copper-depleted leaching solution (124); (C) separating; (D) contacting said copper-rich extractant (90) with stripping solution (106) to form a copper-rich stripping solution (142) and a copper-depleted extractant (114); (E) separating to form a first electrolyte (150); (F) applying voltage across anodes (26) and cathodes (28) to deposit copper metal powder (152) on the cathode. The electrolyte (150) may have a chloride ion concentration of up to about 5 ppm.  The electrolyte (150) may contain at least one triazole. The copper metal powder (152) may be converted to copper foil (210). The copper metal powder may be converted to copper oxides; these copper oxides can be used to make copper foil.