baber/WOPTO huggingface dataset:
Patent CA-2030088-C (CA)
Title: Disc chucking mechanism
Inventor: YAMAMORI EIJI
IPC: G11B17/032
Filed: 1990-11-15
Granted: 1999-08-17
Abstract: A disc chucking unit for supporting a disc loaded on a disc table for rotation in unison with the disc table is constituted by the disc table on which a disc is placed and which is rotationally driven by a rotating driving unit, a fitting member arranged at the center of the disc table and fitted into a central opening of the disc, and a plurality of ball-shaped member reciprocably mounted in the fitting member. These ball-shaped members are biased outwardly of the fitting member by an elastic element for thrusting the disc placed on the disc table towards the disc table, so that the disc may be loaded in a centered and offset free state on the disc table despite the small-sized and simplified construction of the chucking unit.
Patent CA-2040407-C (CA)
Title: Method and apparatus for preventing pay telephone fraud and reducing handset vandalism
Inventor: MCGARRY PATRICK J
IPC: H04M1/67
Filed: 1990-09-10
Granted: 1995-11-21
Abstract: A method and apparatus for the detection and prevention of  pin  fraud  in  a  coin  operated  telephone  (2)  is disclosed.  A circuit (55) detects loss of loop current and triggers the opening of a pair of switches (S1,S2) thereby disconnecting the microphone from the phone.  The A-relay  is also switched to its refund and collect position.   As a result,  the fraud path through the microphone is disconnected, and the central office (4) can perform all its control functions unimpaired.  Thus, the incentives for perpetrating the fraud are eliminated.
Patent CA-2047558-C (CA)
Title: Wood fiber crumbles
Inventor: MORGAN WILLIAM M
IPC: A01K1/015
Filed: 1991-07-22
Granted: 1994-04-05
Abstract: ABSTRACT OF THE DISCLOSURE      This invention is for wood fiber crumbles, and a method for making the same, for use as an animal litter, a petroleum spill absorbent, floor sweeping material, and mulch.  Grists of an assortment of types of wood are combined and admixed, dried, moisturized, pelletized, and ground to form crumbles. Depending upon the selection types of wood utilized,  the crumbles are capable of rapidly and efficiently absorbing animal excretions and petroleum, minimizing unpleasant odors, restricting the growth of microorganisms, repelling insect pests, and adding or removing nitrogen to soil when used as a mulch.
Patent CA-2047903-C (CA)
Title: Calcitonin-containing emulsion for nasal administration
Inventor: YAMAMOTO NAKAYUKI
IPC: A61K38/23
Filed: 1991-07-25
Granted: 1995-12-05
Abstract: The present invention is to provide emulsion preparations for nasal administration containing calcitonins, which are safely and effectively administered, compared with the conventional calcitonin preparations. The emulsions are prepared by using a calcitonin as the active ingredient, an azacycloalkane derivative as the absorption promotor such as 1-[2-(decylthio)ethyl] azacyclopentan-2-one, and glycyrrhizic acid or its salt.
Patent CA-2052595-C (CA)
Title: Injection molding apparatus with angled tip probe
Inventor: GELLERT JOBST ULRICH
IPC: B29C45/22
Filed: 1991-10-01
Granted: 2002-09-24
Abstract: Injection molding apparatus wherein a heated probe extends into a well in a cavity plate having a generally spherical forward end. The forward end of the heated probe has at least one conical tip which extends outwardly at an angle into a conical recess leading to the gate. Each conical recess has an included angle of at least 90° and the conical recess and conical tip extend outward along the same central axis at an angle to the longitudinal axis of the probe. This allows the tip to extend fully into the recess without interfering with withdrawal for cleaning or repair. The included angle of the conical tip is substantially less than the included angle of the conical recess which gradually accelerates the flow of melt as it approaches the gate.
Patent CA-2057422-C (CA)
Title: Receptacle cover
Inventor: HADDAD EDWARD N JR
IPC: B60J7/06
Filed: 1991-12-11
Granted: 1995-09-12
Abstract: A covering apparatus for  a  receptacle having an open top including,  a cover  having  a  first end and a  second end and a length  and  width  sufficient  to  cover  the  open  top  of  the receptacle,  a spring loaded roller,  rotatably mounted at one end of  the  receptacle  and to which  the first end of  the cover  is attached, the roller being adapted for retracting and winding the cover about said roller,  a pair of first cable pulleys,  one of each of the first cable pulleys rotatably mounted at one end of the receptacle, a pair of second cable pulleys, one of each of the second cable pulleys  rotatably mounted at the other end of  the receptacle,  a cable loop engaging the first cable pulley and the second cable pulley, the second end of said cover attached to the cable loop, and an energizing device for causing the pair of first cable pulleys  to  rotate so as  to cause the cable loop to move about the first and said second cable pulleys.  The apparatus has a first covered configuration in which the cover is unwound from the  roller  and extends  over  the  top of  the  receptacle,  and  a second uncovered configuration in which the cover is wound about the  spring  loaded  roller  and  the  top  of  the  receptacle  is uncovered.
Patent CA-2060560-C (CA)
Title: Method for insuring adequate intracellular glutathione in tissue
Inventor: ROWE W BRUCE
IPC: A61P3/00
Filed: 1992-02-03
Granted: 2002-07-23
Abstract: A method is provided gor increasing and/or maintaining the level of intracellular glutathione.      Pursuant to the invention, compositions including hydrolyzed proteins enriched in cysteine are enterally administered to a patient. Additionally, glutathione can be administered with the hydrolyzed protein.
Patent CA-2061001-C (CA)
Title: Method of apparatus for grinding the end of a tubular workpiece
Inventor: TAYLOR CALVIN H
IPC: B24B27/00
Filed: 1992-02-11
Granted: 1993-11-30
Abstract: ABSTRACT OF THE DISCLOSURE     An end of a tubular workpiece is finished with a chamfer by grinding while the workpiece is positioned in a holder and rotated about the workpiece axis and the grinder is carried by a carriage that pivots the grinder in a plane that is radial to the axis.                 -i-
Patent CA-2073073-C (CA)
Inventor: BLANCHARD GILBERT
IPC: C07C253/24
Filed: 1992-07-03
Granted: 1998-08-11
Abstract: La présente invention concerne un procédé d'ammoxydation d'hydrocarbures saturés c'est-à-dire la conversion d'alcanes en un mélange renfermant des nitriles .alpha.,.beta.-insaturés. La présente invention a plus particulièrement pour objet un procédé d'ammoxydation d'alcanes en phase vapeur en présence d'un catalyseur solide dont la phase active renferme du molybdène et de l'oxygène caractérisé en ce que ladite phase active renferme également au moins un élément choisi dans le groupe constitué par les métaux alcalino-terreux, Mn, Fe, U, La et Co. La présente invention convient plus particulièrement à l'ammoxydation du propane en un mélange renfermant de l'acrylonitrile et du propylène.
Patent CA-2084106-C (CA)
Title: Remotely initiated telemetry calling system
Inventor: GARLAND STUART MANDEL
IPC: H04M15/00
Filed: 1992-11-30
Granted: 1996-12-17
Abstract: This invention relates to a method and apparatus for accessing a service bureau or utility via a telemetry call from automated customer premises equipment, such as device state reporting or alarm equipment, without permitting features assigned to the associated customer to interfere with that call. Customer features such as call waiting are canceled for the duration of the telemetry call and arereactivated after the call has been terminated. Advantageously, access from the customer premises equipment to a service bureau or utility may be provided over a telephone line without limiting the customer's choice of telephone features.
Patent CA-2086634-C (CA)
Title: Process and a device for error correction in acousto-optic deflection of light beams, particularly of laser light
Inventor: SANDSTROM TORBJORN
IPC: G02B27/00
Filed: 1993-01-04
Granted: 2003-04-08
Abstract: A process and a device for compensating wave-front errors occurring in acousto-optical deflectors, with at least one auxiliary deflection means which produces a deflected beam whose geometry is independent of the deflection angle and which counteracts the dependence of the deflected beam width on the deflection angle (figure 5).
Patent CA-2089471-C (CA)
Title: Process for embedding liquid to solid substances in methacrylic resins
Inventor: LEGROS ROBERT
IPC: C02F11/00
Filed: 1993-02-12
Granted: 1998-06-23
Abstract: Blocks are prepared for inclusion of a substance chosen from ion exchange resins contaminated with radioactive elements, of water which may, where applicable, contain contaminants and of waste in solid phase, in the form of blocks or of ground material, or in liquid phase. To this end, the substance(s) to be included is(are) coated with a (meth)acrylic resin obtained in situ by direct polymerisation, without preliminary preparation of a prepolymer syrup, starting with a monomer system based on at least one (meth)acrylic monomer exhibiting a high boiling point, such as dicyclopentadienyloxyethyl methacrylate. Application to the storage of industrial contaminants, especially of substances contaminated with radioactive elements; and application of water-inclusion blocks as prosthesis materials.
Patent CA-2092632-C (CA)
Title: Display system with imbedded icons in a menu bar
Inventor: BERRY RICHARD E
IPC: G06F3/0481
Filed: 1993-03-12
Granted: 2001-10-16
Abstract: A method, system and program for including selections in the menu bar that are icons. The support for menus containing icons includes an algorithm in the memory of a processor that presents a menu bar with imbedded icons. The icons can be selected and directly manipulated to perform operations associated with the particular icon upon another icon or other object on a display.
Patent CA-2094717-C (CA)
Inventor: LEMON ROBERT J
IPC: A61C19/04
Filed: 1991-09-25
Granted: 1998-10-13
Abstract: Sonde parodontale à pression constante (1) composée d'un élément d'exploration (3) et reliée à un manche (2) par une charnière flexible (10). Un élément de soutènement (15) s'étend du manche adjacent à l'extrémité de la sonde (6) mais non contigu à celle-ci, de façon qu'il existe un espace (17) entre l'élément d'exploration (3) et l'élément de soutènement (15). Lorsque l'élément d'exploration (3) est introduit dans une poche entre la dent et la gencive (10), le degré de résistance fait en sorte que l'élément d'exploration (3) se déplace autour de la charnière flexible (10), comblant ainsi l'espace entre l'élément d'exploration (3) et l'élément de soutènement (15). Lorsque l'élément d'exploration (3) est mis en contact avec l'élément de soutènement (15), une pression constante à l'insertion est obtenue et une lecture est faite afin de déterminer la profondeur de la poche. L'utilisation d'une telle sonde parodontale à pression constante (1) permet de s'assurer que la lecture est faite à une pression fixe; on évite ainsi de blesser la gencive et les lectures sont précises.
Patent CA-2095751-C (CA)
Title: Coil transport trailer
Inventor: CARLTON JERRY W
IPC: B60P3/035
Filed: 1993-05-07
Granted: 2000-04-18
Abstract: A trailer (100) is provided that transports coils (20) in a trough formed by at least one pair of longitudinally extending spaced-apart support members (8,8') that extend upwardly away from each other towards the bed plane (BP) of trailer (100) such that a peripheral portion of coils (20) are engaged by support members (8,8') below bed plane (BP). Trailer (100) preferably includes containment structures (10, 10') to provide a cage-like structure about support members (8,8') and coils (20) and further preferably includes protective covering over coils (20) in the form of clam shell like sections (16,16') as well as bar members (32) on opposite sides of each coil (20) that are operative to prevent coils (20) from telescoping.
Patent CA-2095896-C (CA)
Title: Perpendicularly opening grounding switch
Inventor: DEMISSY DANIEL
IPC: H01H31/28
Filed: 1993-05-10
Granted: 1996-10-01
Abstract: Perpendicular-opening earthing isolator comprising a female contact (3) and a male contact (6) which is arranged at the end of an operating arm (7), characterised in that it comprises two parallel metal horns (13, 14) arranged so as to grip, when the isolator is in the closed position, the end of the arm in the vicinity of the male contact, and a flexible metal rod (16) termed a whip, constrained to slide, when the arm effects an opening movement, over a fixed point of a guide piece (17), the respective lengths of the horns (13, 14) and of the whip (16) being chosen such that, during opening, the current switches firstly onto the horns, and then onto the whip. <IMAGE>
Patent CA-2096484-C (CA)
Title: Procede de traitement thermique de brasquages uses provenant de cuves d'electrolyse hall-heroult
Inventor: BARRILLON ERIC
IPC: A62D3/40
Filed: 1993-05-18
Granted: 1999-04-27
Abstract: Procédé de traitement thermique de brasquages usés provenant de cuves d'électrolyse Hall-Héroult et en particulier un procédé de traitement thermique de brasquages broyés constitués à la fois de produits carbonés et de produits silico-alumineux imprégnés de composés minéraux fluorés en mélange avec un additif minéral pulvérulent susceptible de se combiner à chaud, avec ou sans fusion, avec les composés fluorés d'imprégnation pour former de nouveaux composés stables et insolubles. Le mélange pulvérulent est injecté à la partie supérieure d'un réacteur dans un flux gazeux à une température n'excédant pas 1100.degree.C. Après avoir réglé le temps de contact des particules solides avec le flux gazeux de telle sorte que celles-ci atteignent une température comprise entre 400.degree.C et 750.degree.C à la base du réacteur avant leur extraction, on maintient la température du flux gazeux à la base du réacteur à une valeur de consigne par ajustement du débit de mélange pulvérulent. En sortie de réacteur, après refroidissement on sépare le flux gazeux des particules constituant alors un résidu stabilisé dont la teneur en cyanure lixiviable est inférieure à 0,0005% et la teneur en fluor lixiviable n'excède pas 0,2%.
Patent CA-2098337-C (CA)
Inventor: NOE STEPHEN A
IPC: B01J8/02
Filed: 1993-06-14
Granted: 2004-03-02
Abstract: A fixed bed, dual-zone radial flow catalytic reactor is disclosed. In particular, the catalyst bed configuration comprises a first freeboard outwardly radial flow catalyst zone in series with a second inwardly radial flow zone separated by an interconnecting substantially impermeable catalyst chute to accommodate catalyst settling while preventing hot spots and/or fluidization in the freeboard area. A gas distributor divides the freeboard zone into segments including a bypass segment and one or more catalyst segments. The radial flow of gas through each segment is essentially unaffected by the level of catalyst so that the flow pattern is not adversely affected by catalyst setting in the freeboard zone.
Patent CA-2098442-C (CA)
Title: Method for the alteration of siliceous materials from bayer process liquids
Inventor: DIMAS PETER A
IPC: C01F7/0606
Filed: 1993-06-15
Granted: 2003-12-23
Abstract: Siliceous materials produced by thermally treating Bayer process liquors are obtained in modified form when produced in the presence of ammonium, aromatic amine; and amine compounds, or compounds bearing ammonium, aromatic amine or amine moieties, such as N-propylamine, pyridine and tetramethylammonium hydroxide. These modified siliceous materials possess morphologies which confer upon them a reduced tendency to deposit on surfaces throughout the process.
Patent CA-2099785-C (CA)
Inventor: TOPP DAVID ANTHONY
IPC: G01N27/82
Filed: 1992-01-10
Granted: 1999-08-24
Abstract: An a.c. field measurement testing system comprises a probe including a yoke (10) for inducing a uniform a.c. field, sensor means (7, 8. 9) comprising a first coil (8) having a longitudinal axis extending in a first direction and a second coil (9) having a longitudinal iris extending in a second direction orthogonal to the first direction and means (11) for effecting energisation of the field, the arrangement being such that signals produced by the coils (8, 9) indicative of defects in a test piece are processed whereby one component of a magnetic field is plotted against another in a display.
Patent CA-2102530-C (CA)
Inventor: ARMITAGE BERNARD J
IPC: A61K31/192
Filed: 1992-05-04
Granted: 2003-07-29
Abstract: The use of S(-)sodium 2-(4-isobutylphenyl)propionate (the sodium salt of S(+)-ibuprofen) in pharmaceutical compositions for the treatment of inflammation, pain and pyrexia is described. Preferred compositions comprise S(-)sodium 2-(4-isobutylphe-nyl)propionate dehydrate. Processes to prepare S(-)sodium 2-(4-isobutylphenyl)propionate and its use in a process to prepare S(+) 2-(4-isobutylphenyl)propionic acid of high enantiomeric purity are also described.
Patent CA-2103068-C (CA)
Title: Positive-type non-return valve
Inventor: DRAY ROBERT F
IPC: B29C45/52
Filed: 1992-04-17
Granted: 2004-11-02
Abstract: A positive-type, non return valve (10) primarily for use with an injection molding machine utilizes a frame (12) which surrounds a first bore (34) and a second bore (32). The second bore (32) is accessed by inlets (30). Outlet passages (40) are located downstream of said inlet (30) and connect second bore (32) with an accumulation area (6). A piston (60) is dimensioned to slidably fit within the first bore (34) and extend into the second bore (32).  In a downstream position, the piston (60) allows positive flow of material from the inlet (30) to the outlet (40). In an upstream position, the piston (60) positively blocks flow of material from the inlet (30) to the outlet (40). The piston (60) can be forced to its upstream position at the beginning of the injection step or can be preclosed by maintaining back pressure on the screw (2) prior to injection:
Patent CA-2108121-C (CA)
Title: Plasma arc cutting process and apparatus using an oxygen-rich gas shield
Inventor: COUCH RICHARD W JR
IPC: H05H1/30
Filed: 1992-03-09
Granted: 2003-11-11
Abstract: A plasma arc torch (10) has a secondary gas flow (46) that is extremely large during piercing of a workpiece (36). The secondary flow (46) exits the torch immediately adjacent the transferred plasma arc (34) and is an extremely uniform, swirling flow. A swirl ring (60) is located in the secondary gas flow path (50) at the exit point. A prechamber (58) feeds gas to the swirl ring (60), which is in turn fed through a flow restricting orifice (56). For certain applications the secondary gas (46) is a mixture of an oxidizing gas and a non-oxidizing gas in a flow ratio of oxydizing to non-oxidizing in the range of 2:3 to 9:1. A network (44) of conduits and solenoid valves (SV1-SV17) operated under the control of a central microprocessor (90) regulates the flows of plasma gas (42) and secondary gas (46) and mixes the secondary gas (46). The network (44) includes valued parallel branches (78,80,84,86) that provide a quick charge capability and a set of venting valves (SV11-SV14), also electrically actuated by the microprocessor (90), to provide a quick discharge. In a preferred high-definition embodiment, a nozzle (28) with a cut back outer surface and a large, conical head (28b) allows a metal seal and enhanced cooling.
Patent CA-2112327-C (CA)
Title: Process for producing alkoxylated thio-compounds
Inventor: SHAW JAMES EDWARD
IPC: C07C323/12
Filed: 1993-12-23
Granted: 1997-12-09
Abstract: A composition comprising a base and an alkoxylated compound selected  from the group  consisting  of  an  alkoxylated  alcohol, alkoxylated mercaptan, and mixtures thereof can be used to catalyze the reaction of a sulfur-containing compound such as, for example, n-octyl mercaptan, or hydrogen sulfide, and an alkylene oxide such as, for example, propylene oxide to produce an alkoxylated thio-compound such as,   for  example,   n-octyl  mercaptan  monopropoxylate  or 1-mercapto-2-propanol.
Patent CA-2112589-C (CA)
Inventor: WEAVER GEORGE W
IPC: A61M25/01
Filed: 1993-05-11
Granted: 2006-02-28
Abstract: An improved biliary catheter (10) is disclosed. The catheter (10) comprises a tube (12) constructed from a polyurethane or nylon having a durometer of about 60 D and coated with a hydrophilic coating to provide lubricity, kink resistance and suppleness. The tube (12) has substantially cylindrical sidewalls and a proximal end (12a) for connection to a source of contrast medium (18) and a distal end (12b) for entry into the common biliary duct of a patient. The tube contains a first crescent-shaped lumen channel (34) extending between the proximal and the distal end, the first lumen channel transporting the contrast medium (18) from the source of contrast medium (18) to the biliary duct; and a second circular lumen channel (32) extending between the proximal end and said distal end for facilitating the insertion and threading of a spring wire guide (24) into the dual-lumen biliary catheter.
Patent CA-2123455-C (CA)
Inventor: GOLIGHTLY RALPH WAYNE
IPC: B29D30/48
Filed: 1994-05-12
Granted: 2005-03-29
Abstract: A plurality of helically wound tire beads are made by winding them on a forming wheel at two predetermined tension levels. The tension levels are generated by a braking pulley and magnetic particle brake in conjunction with a programmable logic controller. The first few turns of wires are made at a relatively low tension level.      Subsequent turns are made at a higher tension level. The lower tension level contributes to longer life of the forming wheel assembly.
Patent CA-2129528-C (CA)
Inventor: MAYER HORST
IPC: C07D239/47
Filed: 1993-02-16
Granted: 2005-11-22
Abstract: Herbicide N-[(pyrimidin-2-yl)aminocarbonyl] benzene sulphonamides of general formula I, wherein the substituents represent the following: R1 represents methyl or ethyl; R2 represents hydrogen or methyl; R3 represents optionally substituted alkyl; or a group ER6; in which E stands for O or S, and R6 represents optionally fluorine-susbtituted alkyl except difluoromethoxy or, if E represents O and simultaneously, R5 represents trifluoromethyl, can represent methyl sulphonyl, ethyl sulphonyl, trifluoromethyl sulphonyl; allyl sulphonyl, or propargyl sulphonyl; or NO2 or OH; or a dialkyl group, if R5 represents fluorine; or a C1-C2- alkyl sulphonyl group which can contain 1-3 halogen atoms; R4 represents hydrogen, methyl, ethyl, methoxy, ethoxy, fluorine, chlorine, methylthio, ethylthio, or C1-C2-halogen alkoxyl; R5 represents fluorine or trifluoromethyl, as well as their environmentally acceptable salts and process for their manufacture and their use.
Patent CA-2136855-C (CA)
Inventor: MAOZ JOSEPH
IPC: H05K1/03
Filed: 1993-05-20
Granted: 2004-11-30
Abstract: A printed circuit board having foamed substrates of low dielectric constant and low dissipation factor and techniques for making printed circuit boards and printed circuits using such substrates. The substrate has a dielectric constant less than 1.5 and a dissipation factor less than 10 -2, most preferably, polymethylacrylimide. A  conductive layer is placed on the substrate surface using chemical deposition or by use of appropriate adhesives. The printed circuit may be imprinted by conventional techniques such as etching with appropriate etching materials.
Patent CA-2136876-C (CA)
Title: Flash gas sampling for polymerization reactions
Inventor: LAWRENCE FREDERICK C
IPC: G01N1/22
Filed: 1994-11-29
Granted: 1998-04-28
Abstract: In a polymerization process utilizing a high pressure flash to separate polymer from unreacted monomer contained in the effluent stream from the reactor, the concentration of unreacted monomer in the reaction effluent is determined by withdrawing from the reactor an effective analyzing amount of effluent, exposing the amount to a low pressure flash and analyzing the vaporized portion to determine the concentration of monomer.