baber/WOPTO huggingface dataset:
Patent NO-171744-C (NO)
Inventor: KREUSEL ULRICH
IPC: E04B1/58
Filed: 1990-03-12
Abstract: PCT No. PCT/DE88/00524 Sec. 371 Date May 10, 1990 Sec. 102(e) Date May 10, 1990 PCT Filed Aug. 29, 1988 PCT Pub. No. WO89/02539 PCT Pub. Date Mar. 23, 1989.A pipe joint for joining several pipes used in a pipe grid structure such as a scaffold. Each pipe (3) is connected, by way of a connecting member (17) inserted into its interior from the end of the pipe and by way of a clamping device (16) composed of two opposing clamping jaws (21, 22) held together by a screw connection (20), with the continuous or discontinuous peripheral extension (9) of a connecting element (1).
Patent CA-2001984-C (CA)
Inventor: LOSZEWSKI RAYMOND
IPC: C04B35/571
Filed: 1989-11-01
Granted: 1995-10-24
Abstract: A high strength silicon carbide monofilament which has a core and a stoichiometric bulk layer of silicon carbide deposited on the core having an exterior surface and a core bulk layer interface, the bulk layer having an average grain size of less than 200 nanometers which size varies continuously across the cross section of the bulk layer, the variation comprising a first average grain size at the interface which increases to a maximum average grain size intermediate the interface and the exterior surface and then decreases to the minimum at the exterior surface.  In an alternate embodiment a surface layer is deposited on the bulk layer of silicon carbide.  A preferred method of making the silicon carbide monofilament is also presented.
Patent CA-2002697-C (CA)
Inventor: MCCABE STEPHEN C
IPC: B05B1/18
Filed: 1989-11-10
Granted: 2000-01-25
Abstract: A shower rose assembly comprising a supply means 16, and a pair of shower roses 10 and 11 and each comprising a chamber into which water can be supplied from a common water supply via said supply means, and at least one wall through which a plurality of outlet apertures 38 are provided and from which wader can issue from the chambers in a plurality of narrow streams. A valve assembly 38 is also provided serving to close of the supply of water to the shower rose 11. The chamber of each shower rose has an internal crass-sectional dimension smaller than for a conventional shower rose thus providing a constriction in the flow path through the assembly, whilst the supply means contains a branch conduit 17 which serves to provide a further constriction in the flow path through the assembly, with the constrictions serving to reduce the rate of flow of water through the assembly.
Patent CA-2007854-C (CA)
Title: Air freshener device and cartridge
Inventor: SULLIVAN WILLIAM E
IPC: A61L9/12
Filed: 1990-01-16
Granted: 1998-12-15
Abstract: An air freshener device (10) having a cartridge (14) and a cartridge housing  (16)  is disclosed.   The housing (16)  has a sealed first cavity (18) and a sealed second cavity  (20)  having a  first  fragrance  (22)  and a second fragrance  (24),  respectively.   First and second cavities (18) and (20) have first and second openings (34) and (54) respectively.   The  device  (10)  includes a housing  (12) having air passage openings (70),  (76),  (78), a fan (82) and power means  (80)  and also supports  cartridge  (14). When  the power means  (80)  powers  the  fan  (82)  the air passage openings  (70),  (76)  and  (78)  receive  air  which moves from the second (76) to the third (78) air passage opening and from the first air passage opening (70) across the cartridge (14) picking up the fragrances (22) and (24) resulting in an air-fragrance mixture which is drawn into an unobstructed air flow between the second and third air passage openings  (76)  and  (78)  and exits the  third air passage opening  (78),  thereby allowing dispersion of the fragrance (22) and (24).
Patent CA-2012875-C (CA)
Title: Skin permeation enhancer compositions
Inventor: CHIANG CHIA-MING
IPC: A61K9/107
Filed: 1990-03-22
Granted: 1995-12-05
Abstract: Skin permeation enhancer compositions are provided which increase the permeability of skin to transdermally administered pharmacologically active agents.  The composition contains diethylene glycol monoethyl or monomethyl ether in addition to an ester component such as propylene glycol monolaurate, methyl laurate or the like.  The compositions are particularly useful in conjunction with the transdermal administration of steroid drugs such as progestogens and estrogens. Methods and drug delivery systems for using the enhancer compositions are provided as well.
Patent CA-2014691-C (CA)
Title: Process for the production of chlorine dioxide
Inventor: SVEDIN BJORN HENRIK
IPC: C01B11/02
Filed: 1990-04-17
Granted: 1997-09-30
Abstract: A process for producing  chlorine dioxide  by reacting in  a  reaction  vessel  an  alkali metal chlorate, mineral acid and a reducing  agent in such proportions  that chlorine dioxide is produced in a reaction medium maintained at a temperature of from about  50 °C  to about  100 °C and at  an  acidity  within  a  range  of from about 2 to about 11 N. The reaction medium  is  subjected  to subatmospheric pressure  sufficient  for  evaporating  water, a mixture of chlorine dioxide and water  vapour being  withdrawn from an evaporation zone  in the  reaction vessel  and alkali metal sulfate being precipitated in a crystallization zone in the  reaction  vessel.  A  mixture  of  formaldehyde and methanol is used as reducing agent.
Patent CA-2017718-C (CA)
Title: Multi-bladed propulsion apparatus
Inventor: ROSS JOHN C
IPC: B63H1/16
Filed: 1990-05-29
Granted: 1994-05-10
Abstract: The present invention provides for a propulsion apparatus for fluid medium comprising an open-ended sleeve having an inlet and outlet for flow through of fluid and a series of cooperating blades positioned within and along the sleeve. Each of the blades has a leading edge and a trailing edge and the blades are fixed to rotate with the sleeve and cause a progressive acceleration of fluid from the inlet to the outlet with rotation of the sleeve thereby providing thrust for propulsion. Adjusting means and are provided interconnecting the blades for pitch adjustment of the leading edges and trailing edges of the blades.  The blades cooperate to define a fluid path to accelerate a fluid from the inlet to the outlet to thereby provide thrust for propulsion as the sleeve is rotated.  The apparatus of the present invention provides forward and reverse speed of propulsion independent of the speed and rotation of the driving mechanism whereby adjustment of the blades at a fixed speed accelerates or decelerates the propulsion effort.
Patent CA-2020498-C (CA)
Inventor: PIACENTI FRANK
IPC: B23G5/06
Filed: 1990-07-05
Granted: 2002-01-15
Abstract: A self-drilling and thread forming fastener for fastening a first softer workpiece, such as wood, to a second harder workpiece, such as metal, is described.      The fastener features wings of improved configuration including positive angle of attack, positive cutting edge relief angles, teardrop-like crescent shape cross section and knife-like cutting edge which exhibit taster drill times through wood.
Patent CA-2021248-C (CA)
Title: Stable, single-phased solutions of water-in-oil microemulsions derived from crude oil and allied products and which contain microorganisms and/or parts thereof
Inventor: LUISI PIER L
IPC: C09K23/00
Filed: 1990-07-16
Granted: 2000-04-04
Abstract: A stable water-in-oil microemulsion which contains microorganisms for carrying out microbiological processes obtained by adding to crude oil an aqueous concentrated solution of microorganisms cells selected from the group consisting of bacteria and eukariotic cells in such a way that said aqueous solution becomes solubilized in said crude oil, the thus-prepared blend being in the form of a stable water-in-oil micro-emulsion.
Patent CA-2023904-C (CA)
Title: Deinking and bleaching secondary fiber
Inventor: NADDEO RONALD CHARLES
IPC: D21C9/147
Filed: 1990-08-23
Granted: 1995-11-28
Abstract: The brightness and bleachability of recycled secondary fiber is enhanced by subjecting the pulped fiber to washing in aqueous surfactant before and/or after treatment with oxygen-containing gas dispersed in an aqueous alkaline medium.
Patent CA-2035419-C (CA)
Title: Electrical appliances
Inventor: O'NEILL ROBERT ANDREW
IPC: H01R13/58
Filed: 1991-01-31
Granted: 2002-01-01
Abstract: A cordless electrical appliance, for example an electric hot water jug, has a standard multi-pin type electrical connector on its appliance part and a cooperating connector on the base part. The pins of the appliance connector are oriented conventionally, namely generally horizontally as for a corded appliance, and are adapted to cooperate with shuttered spring terminals in the base connector, the arrangement being such that as the appliance part is lowered generally vertically onto the base part the horizontal pins on the appliance connector enter respective apertures in the base connector and displace the shutter thereby enabling the terminal ends of the spring terminals to move forwards into electrical contact with the ends of the pins on the appliance part. The use of a standard connector arrangement on the appliance part means that the appliance can be used in a corded or cordless manner and has cost advantages. A control on the appliance, eg. an element overtemperature protector on a hot water jug, can be arranged to prevent the base connector from coupling electrically to the base connector, and the base connector can advantageously comprise a unitary structure provided with its own cable clamp.
Patent CA-2035565-C (CA)
Inventor: FIKENTSCHER ROLF
IPC: B01D17/04
Filed: 1991-02-01
Granted: 2000-12-05
Abstract: The present invention relates to the use of trialkanolamine polyethers obtained by condensation of one or more trialkanolamines in the presence of phosphorous acid and/or hypophosphorous acid as demulsifiers for oil-in-water emulsions.
Patent CA-2039747-C (CA)
Title: Method and apparatus for underground cooling enhancement for nuclear waste repository
Inventor: DANKO GEORGE
IPC: G21F9/36
Filed: 1991-04-04
Granted: 1998-11-17
Abstract: The present invention relates to the retrievable storage of high-level nuclear spent fuel (waste).   Such waste, which generates heat as it decays, is packed in sealed containers (2)  which are placed in a repository site comprising a tunnel or drift (5) in a geological rock formation (50) for permanent or long-term storage.  Elongated, sealed cooling enhancement  devices  (7)  are  emplaced  in  boreholes  (8) extending from the inside surfaces (16 a-b)  of the drift (5)  and  carry  heat  from  the  location  of  the  waste containers (5) to farther distances in the repository site. Applicable sealed cooling enhancement devices disclosed are heat pipes (7), thermal syphons (307), superconductor rods, and heat pumps (407).
Patent CA-2046659-C (CA)
Title: Loudspeaker and horn therefor
Inventor: GUNNESS DAVID W
IPC: H04R27/04
Filed: 1990-12-06
Granted: 1993-08-10
Abstract: SUBSTITUTE                       REMPLACEMENT               SECTION is not Present Cette Section est Absente
Patent CA-2050047-C (CA)
Title: Thermo-electric temperature control arrangement for laser apparatus
Inventor: MCARDLE JAMES
IPC: H04B10/272
Filed: 1991-08-27
Granted: 1996-06-04
Abstract: A thermo-electric laser temperature control apparatus is driven by a switching mode control circuit. Driving current polarity determines if the thermo-electric apparatus is operating in a heat absorbent or heat generating mode. A sequencing control circuit is used in association with the control circuit to define operative ranges of the thermo-electric temperature control apparatus consistent with maintaining proper temperature for a linear operative range for the laser. Feedback circuitry permits precision control of the converter output to limit the operative temperature range of the laser to a small precisely defined temperature window.
Patent CA-2053776-C (CA)
Inventor: MEIER ROLF G
IPC: H04W88/08
Filed: 1991-10-22
Granted: 2000-05-23
Abstract: A wireless telephone system comprises: a PBX connected by a wireline to at least one base station for communicating over a radio link with mobile telephones; a unit for transmitting and receiving audio and data signals over the wireline between the PBX and the base station; a unit for transmitting and receiving audio and data signals over the radio link between the base station and a mobile telephone; and in the base station a unit for separating incoming audio and data signals channels, a unit for combining outgoing audio and data signals for onward transmission thereof from the base station, and a unit for interpreting said data signals and either acting on said data signals if they are intended fox the base station or otherwise passing said signals through the base station for onward transmission to the receiving unit.
Patent CA-2053907-C (CA)
Title: Multiple bandwidth crystal controlled oscillator
Inventor: TAHERNIA OMID
IPC: H03B5/32
Filed: 1990-06-04
Granted: 1995-07-18
Abstract: A dual bandwidth crystal controlled oscillator (200) is described having a first transconductance amplifier (202) providing sufficient gain to maintain oscillation with an oscillator crystal (210) at a minimum current drain. A second transconductance am-plifier (218) is provided which can be selectively coupled to the first transconductance amplifier (202), thereby augmenting the gain of the first transconductance amplifier (202) to provide the capability for rapid oscillator start-up following battery saver op-eration. The dual bandwidth crystal controlled oscillator (200) can be utilized in conventional oscillator and frequency synthesiz-er applications.
Patent CA-2059239-C (CA)
Title: Polling method in a radio data packet communication system
Inventor: KASUGAI TERUAKI
IPC: H04B7/24
Filed: 1992-01-13
Granted: 1998-10-13
Abstract: A central station 101 continuously transmits a slot of predetermined time length which comprises a polling frame Pxx and a downward data frame Ixx.  After receiving the upward data frame Dxx, it sequentially and repeatedly carries out an individual polling of upwardly communicating terminal stations 102 and 103 at a time interval which is more than the predetermined time interval for the polling frame Pxx.  Unspecified polling is carried out of unspecified terminal stations by a polling frame Po which does not carry out this individual polling.          Independently of the polling frame Pxx, the downward data frame Ixx is repeatedly transmitted to downwardly communicating terminal stations 104 and 105.  The polling frame Pxx and the downward data frame Ixx which are included within the same slot are transmitted to a terminal station 106 which is in the upward and downward duplex communication mode at a time interval longer than the predetermined time interval.  The terminal stations 102 through 106 transmit a polling request Rxx or an upward data frame Dxx to the polling frame Pxx from the central station 101 at a time interval longer than the predetermined time interval.
Patent CA-2060300-C (CA)
Inventor: HENDERSON SCOTT
IPC: A61B17/06
Filed: 1992-01-29
Granted: 1996-08-13
Abstract: A retainer for a suture having a suture strand and a needle attached to one or to each free end of the strand.  The retainer has as many as five panels foldably connected together. When all of the panels are folded, the retainer has the approximate size and shape of a first one of the panels.  The suture is contained within the folded panels.  A  separator on the first panel prevents tangling of the suture strand during withdrawal, facilitates such withdrawal, and, where multiple sutures are retained, keeps their respective strands separate. The separator may be one or more two-leaved, low friction and robust envelopes or an accordion-folded sheet of a low friction, robust material.  Alternatively, the separator may be one or more sinuous cuts in the first panel which define adjacent tabs and beneath which the strand may be frictionally held.  A suture-withdrawal site resides at one end of the first panel.  The second panel, at the other end of the first panel, is foldable to prevent the strand from residing beyond the boundary of the first panel and when so folded may overlie a part of the separator.  The third panel is foldable about a side of the first panel to overlie the folded second panel, the separator and the suture and to complementarily overlie the first panel, while not overlying the withdrawal site.  A holder, which may be a foam strip with or without slits and mounted to the first panel, frictionally (where it has slits) or mechanically (where it does not have slits) holds the suture strand to maintain the needle and the needle-strand attachment at the withdrawal site.
Patent CA-2069399-C (CA)
Title: Kayak righting method and apparatus
Inventor: BLACHFORD ALISTAIR MAITLAND
IPC: B63B35/85
Filed: 1992-05-25
Granted: 2003-04-08
Abstract: The present invention provides a method and an apparatus for reducing the skill required of a paddler to right a capsized kayak without exiting it, and to thus avoid the dangers associated with exiting a kayak after capsize. In broad terms, the paddler is provided with a simple and rapid means of creating a buoyant force to one side of the capsized kayak, which can be used to produce a generous amount of torque for righting. More specifically, an inflatable flotation device is held in place on the deck of the kayak and is provided with a handle. Upon capsize the paddler grasps and pulls the handle, whereupon the flotation element is released from its securing container and automatically inflated from compressed gas cartridges. The paddler can then lean on the handle and attached flotation element to right the kayak without exiting it.
Patent CA-2074114-C (CA)
Inventor: NARISHIGE TAKESHI
IPC: F16C33/12
Filed: 1992-07-17
Granted: 1999-01-19
Abstract: A slide member comprising a surface layer having a slide surface for sliding on a mating member, wherein the surface layer has a metal crystal belonging to a cubic system with a crystal plane directed toward the slide surface so as to form the slide surface, and the crystal plane has a high atomic density.
Patent CA-2078799-C (CA)
Title: Mechanical joint connector and joint employing said connector
Inventor: FOSTER MARION C
IPC: F16L23/16
Filed: 1992-11-13
Granted: 1996-11-05
Abstract: A mechanical joint connector and a joint made with the mechanical joint connector are provided  for use in connecting the bell ends of fittings and the like, the bell ends being of a mechanical joint-type configuration having an annular gasket-receiving recess extending into the bell from the outer flange surface of the bolt-through flange of the bell, the connector including a cylindrical sleeve and a radially extending flange, with the flange having an annular raised portion extending upwardly from upper and lower surfaces  of the flange.  The annular raised portions of the flange have upper surfaces which are tapered inwardly from an outer diameter toward the sleeve, such that the raised portion  has  its  maximum height at its outer diameter.  The connector and joint employ a pair of annular gaskets which have outer peripheral surfaces adapted to seat in the gasket-receiving recesses of the bell ends of the fittings, and which have inner diameters substantially equal to the outer diameter of the sleeve, and which have a back seating surface which seats against the raised portion of the gasket.  The connector and gaskets are inserted between the bell ends and will extend into the bell ends when the joint is drawn up, with the gaskets seating in the gasket-receiving recesses in the bell ends and against the raised portions of the connector flange.
Patent CA-2079873-C (CA)
Inventor: LETTON JAMES CAREY
IPC: A23D9/007
Filed: 1991-04-08
Granted: 1996-12-03
Abstract: Reduced fat and calorie pourable shortenings, cooking oils, salad oils or similar compositions are disclosed.  The nondiges-tible portion of these compositions contain low levels of solids, yet still exhibit good passive oil loss control.  These compositions also have good temperature cycling stability and they impart good organoleptic properties to foods prepared with them.  Also dis-closed are relatively clear oils with reduced calories.  All these pourable compositions comprise specific solid polyol fatty acid pol-yester, a liquid nondigestible oil and, optionally, a digestible oil and/or a hardstock fat.
Patent CA-2079892-C (CA)
Inventor: KIRSCHNER LAWRENCE
IPC: B08B3/02
Filed: 1991-04-04
Granted: 1996-01-23
Abstract: Blasting media for removing coatings from sensitive metal and composite surfaces, and a process useful therewith, wherein the blasting media comprise mixtures of water-soluble crystalline sodium bicarbonate particles having average particle sizes of from 100-500 microns, with a hydrophobic silica flow/anti-caking agent.
Patent CA-2083341-C (CA)
Title: Improved ink delivery system for an inkjet printhead
Inventor: KEEFE BRIAN J
IPC: B41J2/175
Filed: 1992-11-19
Granted: 2001-03-20
Abstract: This invention provides an improved ink flow path between an ink reservoir and vaporization chambers in an inkjet printhead. In the preferred embodiment, a barrier layer containing ink channels and vaporization chambers is located between a rectangular substrate and a nozzle member containing an array of orifices. The substrate contains two linear arrays of heater elements, and each orifice in the nozzle member is associated with a vaporization chamber and heater element. The ink channels in the barrier layer have ink entrances generally running along two opposite edges of the substrate so that ink flowing around the edges of the substrate gain access to the ink channels and to the vaporization chambers.
Patent CA-2085804-C (CA)
Inventor: EVANS STEVEN MARK
IPC: C07C255/41
Filed: 1992-12-18
Granted: 2001-12-25
Abstract: The present invention provides microencapsulated hydrosilylation catalysts for one-part heat curable organo-siloxane compositions. Compositions containing these exhibit long-term storage stability yet cure rapidly when heated above the melting point of the encapsulating polymer. At least a portion of these microcapsules are less than one micron in diameter and substantially all are less than about three microns in diameter. Compositions containing the preferred platinum group metals as catalysts are optically transparent.      The microencapsulated curing catalysts of this invention are prepared by irradiating with UV light in the wavelength range of from 300 to 400 nanometers a solution containing (1) at least one of a specified group of photo-crosslinkable organosiloxane compounds derived from propargyl esters of carboxylic acids containing a terminal aromatic hydrocarbon radical and at least two ethylenically unsaturated carbon atoms and (2) a liquid or solubilized hydrosilylation catalyst.
Patent CA-2088282-C (CA)
Inventor: GARG AJAY K
IPC: C01F7/442
Filed: 1993-01-28
Granted: 2000-06-06
Abstract: Nano-sized powders of alpha alumina can be obtained from a boehmite gel doped with a barrier-forming material such as silica that is then dried, fired and comminuted to powder form.