baber/WOPTO huggingface dataset:
Patent CA-2003396-C (CA)
Inventor: HARTLINE MICHAEL F
IPC: A47C17/22
Filed: 1989-11-20
Granted: 1994-11-08
Abstract: A sofa bed having a foldable bed frame including a main section, center section and front section which are coplanar with one another when the frame is in the bed configuration. A mattress is supported by the foldable frame and folds with it when the bed is closed or stored in the sofa frame. When the foldable bed frame is partially folded, the front section does not fully compress the mattress between the main and front sections. When the partially folded bed frame is moved to the fully folded position inside the sofa frame, a series of links causes the front section of the bed frame to move to a horizontal position and fully compress the mattress. In this fashion, the stored energy in the mattress is reduced when the frame is partially open so as to reduce the possibility of injury to the operator.
Patent CA-2003964-C (CA)
Title: Ptc compositions
Inventor: UENO AKIRA
IPC: C09C1/48
Filed: 1989-11-27
Granted: 1994-02-22
Abstract: ABSTRACT OF THE DISCLOSURE:          A PTC composition comprising a product produced by making carbon black porous by means of vapor etching in order to increase its specific surface area thereof, and crystalline polymer in which porous black is dispersed. This product is in this application referred to as porous black.
Patent CA-2008134-C (CA)
Title: Packaging tray
Inventor: SCHUSTER RICHARD L
IPC: B65D5/487
Filed: 1990-01-19
Granted: 1995-01-10
Abstract: Abstract of the Disclosure A  paperboard  tray  for  holding  spaced  rows  of  flat articles.   A  divider  separating  the  rows  includes  sloped walls which,  along with sloped wall portions  in the side panels of the tray, serve to support the articles.  A web connecting an outer end flap  to  a  divider wall  acts  as  a  stop member  to  automatically position the end of the inner end flap as the overlapping flaps are moved into position during the formation of the tray from a blank.
Patent CA-2014342-C (CA)
Title: Transducer with improved inductive coupling
Inventor: MALLARY MICHAEL L
IPC: G11B5/31
Filed: 1990-04-11
Granted: 1994-08-02
Abstract: Magnetic transducer with improved inductive coupling having intertwined yoke and coil;  can include more than one coil, tied together, to increase net number of turns.  Plurality of coils can be formed in single layer or multiple layers.  Use of planar pancake coils simplifies design and manufacture.  Center-tapped coils can be employed.
Patent CA-2021064-C (CA)
Title: Radio communication apparatus in which a particular call can be surely informed to a possessor of the apparatus
Inventor: TSUNODA KAZUYUKI
IPC: G08B3/10
Filed: 1990-07-12
Granted: 1993-03-23
Abstract: Abstract of the Disclosure:       In a radio communication apparatus in which an audible tone is generated (21-22) in response to reception (15-17, 19) of either a primary or a secondary call signal and stopped by a reset switch (23), the audible tone is stopped (172, 18) when the secondary call signal is received.  When the primary call signal is received, the audible tone is not stopped unless the reset switch is continuously closed during a predetermined time interval.  Alternatively, the audible tone is stopped when the reset switch is twice closed although the audible tone is produced again after the audible tone is stopped when the reset switch is once closed.  As a further alternative, the audible tone is stopped in response to repeated closure of the reset switch without being again produced when the reset switch is once closed.
Patent CA-2021764-C (CA)
Inventor: KOKSBANG RENE
IPC: C23C2/40
Filed: 1990-07-23
Granted: 2000-01-11
Abstract: A process for forming a layer of metal on a substrate which comprises the steps of: (a) forming a bath of a molten metal in a vessel: (b) circulating said molten metal in said bath such that said molten metal is projected above the upper surface of said vessel (c) transporting a substrate along a path which traverses the upper surface of said vessels and (d) transferring said molten metal to one surface of said substrate by directly or indirectly contracting said molten metal with said surface of said substrate, and an apparatus for performing the method is disclosed.
Patent CA-2021988-C (CA)
Title: Suitcase
Inventor: PLATH ROBERT V
IPC: A45C5/14
Filed: 1990-07-26
Granted: 1996-02-27
Abstract: A  luggage  assembly  comprising  a  suitcase  having integrally connected thereto a laterally extendable handle at its upper end and a wheel assembly at its lower end is disclosed. To effect transport, the handle is moved from a lowered,  compact, position to a raised position and the suitcase is tilted from an upright standinq position to a canted position in which it is supported solely by its wheels and rolled by pulling said handle.          An attachment allows for additional luggage items to be carried by the assembly and transported in a fully balanced manner.
Patent CA-2025945-C (CA)
Title: Method for producing titanium particles
Inventor: YOLTON CHARLES F
IPC: C22B9/16
Filed: 1990-09-21
Granted: 2000-05-30
Abstract: Titanium is induction melted to produce a molten mass thereof and a water-cooled crucible having a nonoxidizing atmosphere and a bottom opening. The current to the coil used for induction melting is adjusted to produce a levitation effect on the molten mass in the crucible to prevent the molten mass from flowing out of the bottom opening. The molten mass is also maintained out-of-contact with the crucible by providing a solidified layer of titanium between the molten mass and the crucible. After production of the molten mass of titanium, the current to the induction coil is reduced to reduce the levitation effect and allow the molten mass to flow out of the bottom opening of the crucible as a free-falling stream of molten titanium. This stream is struck with an inert gas jet to atomize molten titanium to form spherical particles. Spherical particles are cooled to solidify them and are then collected. The free-falling stream from the crucible may be directed to a tundish from which the molten mass flows through a nozzle for atomization. The titanium may be melted to form the molten mass outside the crucible with a molten mass then being introduced to the crucible.
Patent CA-2027860-C (CA)
Title: Shampoo suspension containing an amine functional siloxane
Inventor: HALLORAN DANIEL J
IPC: A61K8/00
Filed: 1990-10-17
Granted: 1999-08-24
Abstract: A shampoo which is a mixture in the form of a suspension. The suspension includes at least one nonionic surfactant, at least one detersive surfactant, water and an amine functional siloxane polymer. The shampoo suspension is free of viscosity modifying thickening compositions. The amine functional siloxane polymer is present in the suspension in the form of insoluble particles dispersed in the mixture and the particles have a diameter in the suspension of the order of magnitude of between about one micron to about one hundred microns. The amine functional siloxane polymer should also have a mole percent of amine units of the order of magnitude of about 0.05 to about 1.5.
Patent CA-2031784-C (CA)
Inventor: SCHLINGMANN GERHARD
IPC: C12P17/18
Filed: 1990-12-07
Granted: 2000-05-30
Abstract: A process for the preparation of optically pure diastereoisomers of tetrahydrofolate compounds is described, comprising the conversion, for example, of only the 5,6S,7,8-tetrahydrofolic acid component of a racemic mixture of 5,6,7,8-tetrahydrofolic acid to 10-formyl-5,6S,7,8-tetrahydrofolic acid in the presence of a formyl tetrahydrofolate synthetase, followed by cyclizing, hydrolyzing and derivatizing. The process is also useful to make a desired substantially pure (6R or 6S) enantiomer of a derivative or (radiolabeled) tetrahydrafolic acid or a salt or ester thereof.
Patent CA-2032240-C (CA)
Title: Multi-port valveless pump
Inventor: PINKERTON DENNIS
IPC: F04B13/00
Filed: 1990-12-27
Granted: 1995-02-07
Abstract: A valveless, positive displacement metering pump is provided which is capable of either mixing two or more fluids or dividing a fluid from an inflow line into two or more outflow lines.  The pump includes a housing which contains a cylindrical working chamber at different radial positions.  Three or more passages extend through the housing and communicate with the working chamber.  A piston is positioned within the working chamber.  The piston includes a duct defined by its outer surface which communicates with one of the passages, depending upon its rotational position.  The piston is rotated as it is driven back and forth within the cylinder, thereby causing the duct to sequentially communicate with the passages and the piston to sequentially close the passages.  Depending upon the axial direction of movement of the piston, fluid is either pumped into or out of the working chamber as the duct rotates into communication with one of the passages.
Patent CA-2033546-C (CA)
Title: Dye for coloring cigarette paper
Inventor: ST CHARLES FRANK KELLY
IPC: A23L1/275
Filed: 1991-01-03
Granted: 1997-02-25
Abstract: A dye for coloring cigarette paper a brown color which includes caramel as the brown coloring agent, a plasticizer to prevent the  paper  from  becoming  brittle,  and  water.   The  dye  can further include carmine as a red coloring agent to change the shade and hue of the brown color of the caramel.  The dye can further include a burn additive to promote the burning of the dyed paper if needed.
Patent CA-2035641-C (CA)
Inventor: HOBERMAN CHARLES
IPC: E04H15/48
Filed: 1991-02-04
Granted: 2001-08-07
Abstract: Self-supporting structures of diverse shapes are disclosed that may be collapsed down to a compact bundle. In them, units are employed that are comprised of a central tapered strip bordered by two elongated strips. The tapered strip is pleated along a series of lines that cross it widthwise and each elongated strip is pleated along a series of lines that cross it widthwise. The central tapered strip is joined to each of the two elongated strips by a series of pleat. lines that are connected end-to-end. When the unit is folded, each of the two elongated strips fold into a stack, and the central tapered strip folds in a zig-zag fashion, such that the planes of the tapered strip lie essentially orthogonal to the planes of the stacked elongated strips. The two stacked elongated strips fold towards each other, such that the stacks lie in line with one another.
Patent CA-2036062-C (CA)
Title: Removing solids, haloic acid, cos and h2s from a feed gas
Inventor: BOWMAN DAVID FREDERICK
IPC: B01D53/14
Filed: 1991-02-11
Granted: 2001-03-27
Abstract: Process for removing solids, haloic acid(s), COS and H2S from a feed gas comprising the steps of (a) contacting the feed gas (1) with water (8) to obtain mixture of feed gas and water; (b) contacting the mixture of feed gas and water with an aqueous solution (11) of K2CO3; (c) supplying the mixture obtained in step (b) to a gas/liquid separator (14) and removing from it a bottom stream (20) and a gaseous overhead stream; (d) contacting (21) the gaseous overhead stream with an aqueous solution of K2CO3 to convert COS and to remove an H2S and water containing gaseous overhead stream; (e) removing water or water and H2S from the H2S and water containing gaseous overhead stream from step (d); and (f) using water removed in step (e) in contacting the feed gas in step (a).
Patent CA-2040842-C (CA)
Inventor: BUNCH RICK L
IPC: F25B43/00
Filed: 1991-04-19
Granted: 1994-08-23
Abstract: The present invention is a crankcase heater for preventing the migration of liquid refriger-ant.  The heater is located on the compressor housing surface near the oil sump.  The heater is positioned within a fence of a terminal assembly, covering substantially all the surface area en-closed by the fence except for the terminal clus-ter itself.  The heater provides heat to the hous-ing and the interior of the compressor, and the gasket insulates the heater and interiorly re-flects the heat produced.  Liquid refrigerant in the oil sump is boiled off to increase the pres-sure inside the housing and inhibit migration of refrigerant from the evaporator or accumulator.
Patent CA-2041760-C (CA)
Title: Internally assisted clutch
Inventor: FLOTOW RICHARD A
IPC: F16D13/71
Filed: 1991-05-03
Granted: 2001-11-06
Abstract: An internally assisted friction clutch having both engagement springs and assister springs extending between a cover and a release sleeve is disclosed. The radially directed forces exerted by the springs continually center and rotatably drive the release sleeve co-axially relative to the cover under normal operating conditions. In order to prevent excessive relative rotation, a plurality of protrusions are formed on the release sleeve which extend into respective recesses formed on the cover. The recesses are sized to be significantly larger than the protrusions so as to cause engagement only when four to five degrees of relative rotational movement or more occurs between the release sleeve and the cover.
Patent CA-2051624-C (CA)
Title: Oleophilic alcohols as a constituent of invert drilling fluids
Inventor: MUELLER HEINZ
IPC: C09K8/32
Filed: 1990-03-29
Granted: 2003-01-28
Abstract: The use is described of a) ~mono- and/or polyfunctional alcohols of natural and/or synthetic origin which are at least largely water-insoluble and are fluid and pumpable in the temperature range of 0 to 5°C, or of b) ~solutions, fluid and pumpable in the given temperature range, in ecologically-acceptable water-insoluble oils, of at least largely water-insoluble mono- and/or polyfunctional alcohols of natural and/or synthetic origin, as the continuous oil phase of drilling fluids, which exist as W/O-emulsions, have a dispersed aqueous phase and preferably have further usual additives in the alcohol-containing oil phase, and which are suitable for the environment-friendly development of, e.g., petroleum and natural gas deposits. Drilling fluids of the above type are also ascribed, which are characterized in that they contain as the continuous oil phase, or dissolved in ecologically-acceptable water-insoluble oils, an additive of at least largely water-insoluble mono-and/or polyfunctional alcohols, the oil phase in each case being fluid and pumpable in the temperature range of 0 to 5°C and having flash points above 80°C.
Patent CA-2053613-C (CA)
Title: Tampon applicator
Inventor: SCHOELLING HANS-WERNER
IPC: F02B3/06
Filed: 1991-10-17
Granted: 2002-10-15
Abstract: The invention is related to a tampon applicator (10) made of plastic, especially for feminine hygiene, consisting of an approximately cylindircal outer sleeve (12) which is intended for receiving a tampon (14) and in the rear end of which there is inserted in an axially non-displaceable manner hollow grip piece (16), in which a slide (18) is arranged so as to be axially movable. The outer face of the slide (18) is connected in the vicinity of its fromt end, to the inner wall of the grip piece (16) by means of at least one predetermined breaking point (24). Thus, the tampon applicator can be produced from just two injection-molded parts allowing reduced expenditure on machinery and assembly. The slide is held captively in the grip piece until the tampon applicator is put to use.
Patent CA-2054914-C (CA)
Title: Quiet tail rotor
Inventor: SHENOY RAJARAMA KOODIGE
IPC: B64C27/82
Filed: 1991-11-04
Granted: 1999-10-12
Abstract: A quiet tail rotor (QTR) blade for helicopters that provides reduced noise levels and increased thrust efficiency. The QTR blade includes a first segment for connecting the QTR blade to a helicopter tail rotor hub and an outboard segment, integral with the first segment, having a configuration that reduces high speed impulsive noise and blade vortex interaction noise and provides increased thrust efficiency. The outboard segment includes an inboard segment integral with the first segment and a swept, tapered tip segment integral with the inboard segment. The inboard segment has a constant chord and a predetermined constant airfoil section profile defined by constant upper and lower surface contours. The predetermined constant airfoil section profile has a t/c ratio greater than about twelve percent of the chord at any station. The swept, tapered tip segment has a variable chord and a predetermined airfoil section profile defined by constant upper and lower surface contours. The predetermined airfoil section profiled has a t/c ratio less than about nine percent of the chord at any station. The swept, tapered tip segment includes a rearwardly swept, straight leading edge having a sweep angle in the range of about 30° to about 45°, and preferably about 45°.
Patent CA-2057564-C (CA)
Title: Honeycomb heater and catalytic converter
Inventor: ABE FUMIO
IPC: F01N3/24
Filed: 1991-12-12
Granted: 1999-04-06
Abstract: A honeycomb heater has a honeycomb structure having a number of passages defined by partition walls.  At least two electrodes are in electrical contact with the honeycomb structure, and a catalyst composition is formed on partition walls of the honeycomb structure.  The catalyst composition includes zirconia powder loaded with Rh, an inorganic heat-resistant oxide, and a rare earth element oxide.  A catalytic converter has at least one or two main monolithic catalyst(s), and such a honeycomb heater disposed upstream, downstream or between the main monolithic catalysts.
Patent CA-2059554-C (CA)
Title: Fetal cell recovery method
Inventor: SIMONS MALCOLM J
IPC: C12N5/073
Filed: 1991-03-27
Granted: 2004-06-22
Abstract: The present invention provides a method for selectively recovering fetal cells from a maternal blood sample. The method is performed on a blood sample from a pregnant woman having different first and second cell surface antigens expressed by a first allele of a polymorphic genetic locus and a second allele of a polymorphic genetic locus. The method separates maternal and fetal cells based on differential reactivities of the cells to antibodies specific for polymorphic cell surface antigens, particularly the HLA antigens. In particular the fetal and maternal cells are separated based on the non-reactivity of the fetal cells to an antibody specific for a cell surface antigen encoded by a non-transmitted maternal allele. The method can be performed using solid phase-affixed antibody and recovering non-bound cells or using fluorescent labeled antibody and recovering unlabeled cells by fluocescence-activated cell sorting. In a preferred embodiment, the cells are also contacted with a second antibody specific for the second cell surface antigen. Fetal cells are separated based on their reaction with, at most, one of the antibodies.
Patent CA-2063587-C (CA)
Title: Stable vaccine compositions containing interleukins
Inventor: PILLAI SUBRAMONIA
IPC: A61P31/04
Filed: 1990-07-16
Granted: 2005-08-30
Abstract: This invention pertains to interleukins-containing vaccine compositions, comprising a mixture of antigen and an adjuvant amount of an interleukin adsorbed onto a mineral in suspension and a preservative. Preferably, the mineral is alum. The interleukin can modulate the protective immune response to an antigen, while the mineral stabilizes the biological activity of the interleukin.
Patent CA-2066300-C (CA)
Inventor: WARD WILLIAM W
IPC: A45C13/10
Filed: 1992-04-16
Granted: 1996-04-30
Abstract: A latch member of a case or similar container blow-molded from thermoplastic material is pivotally and permanently secured to the case by a bearing formed substantially  simultaneously with  and  from the  same thermoplastic material as the body of the case.  Forma-tion of a permanent bond between the bearing member and the latch member is avoided by employing a latch member formed of material having a higher melt temperature than the material used in the formation of the main body of the case and the bearing member, and also by effecting relative  movement  between  the  latch member  and  the bearing member while the thermoplastic material forming the bearing member  is  still  in  a heated condition. Apparatuses for positioning the latch member within the mold are also disclosed.
Patent CA-2067086-C (CA)
Title: Wheeled carrying case
Inventor: HUANG EN-LIUNG
IPC: A45C5/14
Filed: 1992-04-24
Granted: 1995-12-19
Abstract: A wheel-equipped carrying case can be carried by hand or rolled along the ground Using an extensible U-shaped handle conveniently stored when not in Use. The extensible handle slides through holes in substantially rigid end walls into a pair of storage tubes in the interior of the case.          Wheels are rotatively attached to ends of the storage tubes extending beyond one end wall.  For added stiffness each end wall includes a flange around the periphery of the  wall  with a groove therein. The grooves accommodate the free ends of the side and bottom walls of the case during assembly.  In an alternative embodiment, the extensible handle telescopes into tubes mounted on the bottom of the case and wheels are attached to the end wall opposite the end wall through which the extensible handle projects.  One or more pivotally mounted support frames on the bottom of the case wheels allow the case to rest in a level position when it is not being carried or rolled. In another alternative embodiment the extensible handle is stored within a larger-diameter tube mounted on the bottom of the case with four metal or two plastic brackets, and is capable of being locked in extended position by spring-loaded buttons which pop up through holes in the handle tubing and storage tubing when the handle is fully extended.
Patent CA-2072986-C (CA)
Title: High speed line shaft conveyor
Inventor: COLLINS ELLSWORTH H
IPC: B65G13/073
Filed: 1991-08-12
Granted: 1995-02-14
Abstract: ABSTRACT     A conveyor designed for high speed operations includes a drive shaft, a first friction wheel having a beveled end and mounted on the drive shaft, a second friction wheel mounted on the conveyor frame and having a beveled end which mates with the beveled end of the first friction wheel, and means for driving the conveyor rollers from the second friction wheel.
Patent CA-2077935-C (CA)
Title: Process for the preparation of naphtha
Inventor: VAN BALLEGOY CAROLUS M
IPC: B01J23/40
Filed: 1992-09-10
Granted: 2003-10-28
Abstract: Naphtha is prepared from a hydrocarbon feed obtained by a Fischer-Tropsch synthesis and comprising a fraction having a boiling point above the boiling point range of the naphtha, by a process which comprises contacting the said hydrocarbon feed at elevated temperature and pressure in the presence of hydrogen with a catalyst comprising platinum supported on a silica-alumina carrier prepared from an amorphous silica-alumina starting material having a pore volume of below 1.0 ml/g.
Patent CA-2078760-C (CA)
Title: Backless bust-supporting undergarment
Inventor: OTANI CAROL
IPC: A41C1/06
Filed: 1992-09-21
Granted: 1996-04-09
Abstract: An undergarment affording bust support and an unobstructed  view  of  the  wearer's  back  including  a panty portion,  a bra portion and joining straps.  The panty  portion  has  a  front  panel,  a  rear  panel,  and fasteners  for  joining  the  front  and  rear  panels together at the crotch.  The bra portion has a pair of cups,  a connector joining the cups at the front,  and, for each cup,  a shoulder strap for supporting the cup on a respective shoulder of the wearer.  On each side, the joining straps are a first strap joining the rear panel and a  respective one of  the cups and a second strap joining the front panel and a respective one of the  shoulder  straps.   The  first  and  second  joining straps  cross  and  are  secured  together  adjacent  a respective one side of the wearer, preferably at about waist level.