baber/WOPTO huggingface dataset:
Patent CA-2055848-C (CA)
Title: Cooled sulphur furnace bypass system
Inventor: CAMERON GORDON MURRAY
IPC: C01B17/76
Filed: 1991-11-19
Granted: 2001-10-23
Abstract: Apparatus and process for the production of gaseous sulphur dioxide mixture for conversion to sulphur trioxide in a catalytic converter in the production of sulphuric acid by the contact process. Apparatus comprises the furnace to produce sulphur dioxide gas from elemental sulphur and a first dry air stream; means for feeding a first portion of the sulphur dioxide gas to a waste heat boiler to cool the gas; the improvement comprising combining a second portion of the sulphur dioxide gas exiting the furnace with a second dry air stream to provide a combined gaseous stream which bypasses the boiler and subsequently is combined with the cooled sulphur dioxide stream. The system provides use of a bypass valve which experiences only cooled sulphur dioxide containing gases, with its attendant reduced corrosion.      Further, the system may operate at higher temperatures than is common to provide further advantages,
Patent CA-2058416-C (CA)
Inventor: TAKADA SHIGEKI
IPC: C08F2/38
Filed: 1991-03-29
Granted: 1998-11-24
Abstract: On divulgue ici un procédé pour la polymérisation en suspension d'un polymère vinylique, consistant à utiliser comme agent de suspension un polymère de type poly(ester vinylique), possédant un groupe ionique à l'une de ses extrémités, ou un polymère de type poly(alcool vinylique) avec un degré d'hydrolyse de 90 % molaire ou moins, obtenu par hydrolyse du poly(ester vinylique) ci-dessus.  Selon le procédé mentionné plus haut, il est possible d'obtenir des granulés de polymère vinylique possédant une dispersion granulométrique étroite, une forte masse volumique apparente, un taux élevé d'absorption de plastifiant et une faible teneur en résidu de monomère vinylique.
Patent CA-2062806-C (CA)
Inventor: WAITE TIMOTHY PETER
IPC: H01F17/04
Filed: 1990-06-21
Granted: 1999-10-26
Abstract: Dans un appareil pour vérifier la monnaie, la face frontale (34) d'une bobine d'induction (24), la face frontale (20, 22) du noyau de haute perméabilité de la bobine et une partie structurale (36) de l'appareil sont toutes positionnées de façon précise l'une par rapport à l'autre grâce à l'enroulement de la bobine (24) autour d'un gabarit dont la joue frontale (26) détermine le positionnement relatif de ces éléments.
Patent CA-2063107-C (CA)
Title: Apparatus for the production of plastic pipes
Inventor: HEGLER RALPH-PETER
IPC: B29C48/09
Filed: 1992-03-16
Granted: 2001-12-11
Abstract: An apparatus for the manufacturing of plastic pipes has an injection head and half shells of which two at a time combine as a pair to form a mold. The injection head has at least one channel issuing in a sub-stantially ring-shaped nozzle, which is delimited by two components one of which being adjustable for modification of the width of the nozzle. A component directly delimiting the nozzle is tiltable in relation to the central longitudinal axis, whereby an adjustment of the width with great sensitivity is attained for such a ring-shaped nozzle.
Patent CA-2064949-C (CA)
Title: Endoscopic multiple ligating clip applier
Inventor: STEFANCHIK DAVID
IPC: A61B17/128
Filed: 1992-04-02
Granted: 2003-01-14
Abstract: An endoscopic clip applying system as described which contains a venting system and a clip applying support system which prevents closure of the mechanism before firing. Also, the system ensures proper loading of the clips and prevents them from falling out during loading.      Further, the system describes an easily manufacturable, positively opening system which has minimized size requirements. Furthermore, a lock-out mechanism is provided so that the mechanism may not be inadvertently fired. The shaft resists excessive torque as well as holds the clip in place during firing. There are provisions for sealant and non back-up of the clips, as well as features which make the clip properly placed for closure.
Patent CA-2065979-C (CA)
Title: Mode dependent minimum fifo fill level controls processor access to video memory
Inventor: THOMPSON STEPHEN PATRICK
IPC: G06F3/14
Filed: 1992-04-14
Granted: 1999-01-19
Abstract: A full screen of video data is stored in a video memory.  A small block of video data to be imminently displayed on a raster scan display device is copied, two double-words (32 bits) at a time,  from the video memory to a 6 by 32-bit first in, first out buffer (FIFO).  A fill detection circuit determines when the fill level of the FIFO is at or above certain predetermined  levels;  specifically,  3,  5  and  6 double-words.   The current operating mode is stored in a programmable mode register wherein each mode corresponds to a  unique  screen  resolution.    For  example,   one  mode corresponds to a 1024 by 768 pixel resolution having 256 colors per pixel, while another mode corresponds to a 320 by 200 pixel resolution having 4 colors per pixel.  A minimum fill  level  is  selected  by  a  level  selection  circuit depending on the current operating mode.  Since the FIFO is emptied quickly in a high resolution mode, a higher minimum fill level is selected for high resolution modes than for low resolution modes.  Processor access circuitry permits a central processor to write new video data to the video memory.   The  processor  access  circuitry,  however,   is disabled  whenever  the  current  fill  level  is  below  the minimum  fill  level  set by  the  level  selection circuit. Thus, central processor access to the video memory is only permitted when there is a minimum level of data in the FIFO, and that minimum level of data is selected according to the current operating mode.
Patent CA-2067870-C (CA)
Inventor: SAUZE FRANCOIS
IPC: B63C11/22
Filed: 1992-05-01
Granted: 2003-12-16
Abstract: L'ensemble de valve de détente, couplé au levier de diaphragme par un ensemble de tige traversant la cavité interne du boîtier, comporte un dispositif d'échange de chaleur avec le milieu environnant, un support de tige à l'extrémité de l'ensemble de tige opposée à l'ensemble de valve, étant également avantageusement associée un autre dispositif d'échange de chaleur de façon à éviter le givrage, sous l'effet de la détente du gaz respiratoire dans le boîtier, de l'équipage mécanique de commande de l'ensemble de valve, en cas d'utilisation en milieu environnant froid.
Patent CA-2074063-C (CA)
Title: Conveyor construction having side rails with double longitudinal slots
Inventor: DORNER WOLFGANG C
IPC: B65G23/44
Filed: 1992-07-16
Granted: 1998-09-01
Abstract: A conveyor constructing having a pair of spaced parallel side rails that support a conveyor belt, each of the side rails is provided with a pair of vertically spaced, parallel, longitudinal slots.  Each slot is generally T-shaped in cross section and has an open side facing laterally outward of the side rail.  The open side of the lower slot is offset laterally outward from the open side of the upper slot of the side rail.  End units are associated with each end of the conveyor and each end unit includes a pair of spaced side plates having a belt supporting spindle journalled between the side plates. Slide blocks are mounted in the ends of the slots in the side rail and the side plates are disposed outward of the respective side rails and are connected to the slide blocks.  Slide blocks can also be mounted in the slots and serve to connect auxiliary equipment at selected positions to the conveyor.
Patent CA-2075316-C (CA)
Title: Plasma arc torch having improved nozzle assembly
Inventor: SEVERANCE WAYNE S JR
IPC: H05H1/34
Filed: 1992-08-05
Granted: 1995-02-07
Abstract: Abstract of the Disclosure A plasma arc torch is disclosed and includes an electrode defining a discharge end and a longitudinal axis.  A nozzle base, formed of metallic material, is positioned adjacent the discharge end of the electrode.  The nozzle base has an outer, annular configured mounting surface and a frusto-conical surface positioned adjacent the mounting surface and tapering toward the longitudinal axis in a direction away from the electrode.  A lower nozzle member, formed of metallic material, is secured onto the nozzle base mounting surface on the side opposite the electrode, and includes an interior surface spaced from the outer frusto-conical surface of the nozzle base to form a water passage.  A ceramic insulator is secured onto the outer surface of the lower nozzle member and extends substantially along that surface for preventing double arcing and insulating the lower nozzle member from heat and plasma generated during torch operation.   In a one embodiment the ceramic insulator is secured by means of glue.  In another embodiment, the ceramic insulator is secured by an O-ring.
Patent CA-2086085-C (CA)
Inventor: DEKLEROW JOSEPH W
IPC: B01D53/04
Filed: 1992-12-22
Granted: 1998-09-29
Abstract: A lamp crusher housing is mounted on the removable cover of a replaceable waste container to discharge crushed lamps into the waste container through an opening in the cover.  An elongate, plastic sleeve is removably and sealingly secured at one end over the upper end of the waste container, and at its opposite end around the outlet of the housing from which crushed lamp particles are discharged.  The sleeve has an excess portion folded into the waste container so that when the cover is lifted from the container opposite ends of the sleeve bag remained sealingly connected to the waste container and housing outlet so that no toxic gases are allowed accidentally to escape into their surrounding atmosphere.  The apparatus includes a replaceable filter cartridge for filtering out mercury vapors, and the like. Each cartridge contains a fuse which is connected in the circuit that controls the motor that drives the lamp crusher.  When a new cartridge is placed in the apparatus its fuse is connected into the control circuit and permits only a predetermined number of lamp crushing operations to occur, after which the motor will be prevented from further operation until the saturated cartridge is replaced by a new, clean cartridge.
Patent CA-2087916-C (CA)
Title: Process for the preparation of polyolefin
Inventor: KAWASAKI MASAAKI
IPC: C08F2/06
Filed: 1993-01-22
Granted: 1997-03-25
Abstract: A first process for the preparation of polyolefin according to the invention is a process comprising polymerizing or copolymerizing olefin in the presence of a catalyst for olefin polymerization comprising [A]  a metallocene compound of a transition metal selected from Group IVB of the periodic table, and [B]  an organoaluminum oxy-compound; wherein the organoaluminum oxy-compound [B] is added to the polymerization system in the form of a slurry of said organoaluminum oxy-compound [B] in an aliphatic hydrocarbon or alicyclic hydrocarbon, and the polymerization is carried out in the presence of an aliphatic hydrocarbon diluent or an alicyclic hydrocarbon diluent.    A second process for the preparation of polyolefin according to the invention is a process comprising:    (i)  polymerizing or copolymerizing olefin in a liquid phase in the presence of the above-mentioned catalyst; and (ii) feeding a polymer solution containing the resulting polyolefin from a polymerization zone to a separation zone kept at a temperature of not lower than the upper cloud point of the polymer solution to separate the polymer solution into a lower phase portion containing the polyolefin in a high concentration and an upper phase portion, so as to recover the polyolefin from the lower phase portion in the separation zone and to recycle at least a part of the upper phase portion to the polymerization zone.
Patent CA-2088947-C (CA)
Title: Hydrogen fuelled gas turbine
Inventor: WARKENTIN DANIEL A
IPC: F02C7/143
Filed: 1993-02-05
Granted: 1996-07-16
Abstract: A hydrogen fuelled gas turbine which includes a combustion chamber having a steam inlet, an oxygen inlet, a hydrogen inlet, and an outlet.  A compressor is provided.  The steam inlet is connected to the compressor such that the compressor provides steam as a working fluid.   The hydrogen inlet is connected to a source of hydrogen gas, whereby hydrogen gas serves as a fuel for combustion.  The oxygen inlet is connected to a source of oxygen gas, whereby oxygen is supplied to oxidize the hydrogen fuel.  An igniter is disposed within the combustion chamber whereby the hydrogen/oxygen mixture is explosively ignited.  The products of combustion combine with the steam and rapidly expand out through the outlet of the combustion chamber.  A turbine is provided having an inlet, an outlet and a rotatable member disposed in a flow path between the inlet and the outlet.   The inlet of the turbine is connected to the outlet of the combustion chamber such that expanding products of combustion and steam exert a force to rotate the rotatable member when passing from the inlet to the outlet.  The compressor has an inlet coupled with the outlet of the turbine whereby steam from the outlet of the turbine is recycled.  The compressor has a plurality of water injectors adapted for connection to a water source whereby water is injected into the steam such that the water draws heat from the steam as it vaporizes thereby triggering a physical volume reduction.
Patent CA-2090624-C (CA)
Title: Apparatus and method for separation, recovery, and recycling municipal solid waste and the like
Inventor: HOLLOWAY CLIFFORD C
IPC: F27B7/00
Filed: 1993-03-01
Granted: 1997-12-23
Abstract: Apparatus and method for separation, recovery, and recycling municipal solid waste and the like by introducing solid waste materials into a rotatable pressure vessel, rotating, pressurizing, and heating the pressure vessel and thus the waste material while simultaneously applying an extruding action to the solid waste material.  The extruding action is achieved by a rotatable extruder mechanism carried in the pressure vessel which forces the processed solid waste material through a constricted area adjacent the exit of the pressure vessel.
Patent CA-2093999-C (CA)
Title: Antenna system and method of manufacturing said system
Inventor: FUNDER TORBEN
IPC: H01Q21/00
Filed: 1993-04-14
Granted: 2002-07-16
Abstract: An antenna system comprises at least two dipole antennas (6) constituting an antenna module and is placed above and parallel with a common, artificial ground plane (5) in the form of an electrically conducting plate, for instance the bottom of a metal box (2). The dipoles (7) and the feed lines (8, 9, 10, 11) are designed as air dielectric striplines and are configured in one piece of a homogeneous material and extend mechanically and electrically in an uninterrupted manner from the dipoles to the antenna connector. The parts configured in one piece are produced by punching out sheet metal, and after suitable bending the parts are inserted in corresponding openings (16) in the ground plane (5).
Patent CA-2095092-C (CA)
Inventor: CHAPPELL CHRIS
IPC: A63B53/02
Filed: 1993-04-28
Granted: 1998-09-22
Abstract: A set of golf clubs which utilizes progressively longer hosel lengths for the purpose of enlarging the main body of the clubhead and/or redistributing weight within the main body of the clubhead.  The hosel length progresses from a very short hosel (1 3/8") on the lowest lofted iron,  (the number 1 iron), to a conventional length hosel (2 5/8") on the sand wedge.  By reducing the length of the hosel, weight is made available that can be used to enlarge the size of the clubhead and/or redistribute weight within the main body of the clubhead.
Patent CA-2095999-C (CA)
Inventor: GOLEN EMIL S
IPC: A63B24/00
Filed: 1993-05-11
Granted: 1999-05-11
Abstract: An exercise apparatus is used to maintain a user's level of exercise intensity as measured by heart rate at a target level while exercising. A heart rate sensor indicates the user's heart rate, and a computer adjusts the resistance of the apparatus in accordance with the heart rate signal to establish and maintain the user's heart rate near a target level.  The user can periodically disengage the heart rate sensor for a limited time, during which time the computer maintains the user's heart rate near the target level by adjusting the resistance in accordance with the user's rats of exercise. Also, a climbing exercise apparatus is provided having a frame on which two pedals are pivotally mounted to provide a user with a vertically reciprocating exercise movement, and a control panel for user input and output.  A dynamic brake, alternator or the like applies a variable level of resistance against the user's movement.  The value of the resistance signal is independent of the rate at which the user steps.  A display successively displays images of hills.  Each hill is associated with one of the series of resistance values, and that value is graphically represented as part of or in visual association with the hill image.
Patent CA-2096879-C (CA)
Title: Gradient index mirror for liquid crystal displays and the like
Inventor: RAY RAJARSHI
IPC: H01L21/76
Filed: 1993-05-25
Granted: 1996-11-12
Abstract: The contrast of an LCD cell (12) is enhanced by the use of a gradient index plate mirror (16',16") positioned behind the cell to reflect light from a light source (14',14") through the cell in a well-collimated beam. The mirror (16',16") is formed of an optical plate (34',34") having first and second major surfaces (36',36") and (38',38"), the latter having a reflective coating (40',40") thereon. The optical plate (34',34") has a gradient index of refraction which increases from its first to its second major surface. As a consequence, the light entering the plate and reflected back therethrough is refracted so as to be bent closer to the plate normal (42',42"), causing the light leaving the mirror and entering the LCD cell to be well collimated, which is desirable for improving the display contrast.
Patent CA-2097732-C (CA)
Inventor: WEISCHER CARL-HEINRICH
IPC: A61K31/355
Filed: 1993-06-04
Granted: 2002-12-31
Abstract: The use of alpha-lipoic acid, dihydrolipoic acid, metabolites of alpha-lipoic acid, inter alia 6,8-bisnortetralipoic acid, tetranorlipoic acid, optical isomers R- and S-form of alpha-lipoic acid in oxidized and reduced form in combination with vitamin A, B1, B2, B6, B12, C and E and their pharmaceutically acceptable salts for the preparation of medicaments with analgesic, anti-inflammatory, antidiabetic, cytoprotective, anti-ulcer, antinecrotic, neuroprotective, detoxifying, anti-ischemic, liver function regulating, anti-allergic, immune-stimulating and antioncogenic effect, corresponding medicaments and their preparation.
Patent CA-2101826-C (CA)
Title: Connector assembly
Inventor: MATKOVICH VLADO IVAN
IPC: A61M39/00
Filed: 1993-08-03
Granted: 2002-10-29
Abstract: A connector assembly includes first and second fittings and first and second membrane assemblies.      Each fitting defines a respective aperture. Each membrane assembly has a layer sealing the aperture and a removable contamination containment layer overlying a respective sealing layer. The first and second fittings may be resiliently coupled in biased opposition to urge positive contact between the first and second removable contamination containment layers and/or the first and second sealing layers. In one application, a connector assembly according to the invention may define a fluid communication path for handling a fluid without allowing the level of contaminants in the fluid to increase. A connector assembly according to the invention may be used to handle a biological fluid while maintaining the fluid free of viable contaminating microorganisms or preserving its sterility, for example.
Patent CA-2103379-C (CA)
Title: Catalyst for olefin polymerization, process for olefin polymerization using the same, ethylene/.alpha.-olefin copolymer, graft modified ethylene/.alpha.-olefin copolymer, and ethylene copolymer composition
Inventor: TSUTSUI TOSHIYUKI
IPC: C08F4/655
Filed: 1993-11-18
Granted: 2000-05-23
Abstract: Disclosed is an olefin polymerization catalyst comprising (a) aluminoxane, (b-I) a first transition metal compound ML 1 x (in which M is a Group IVB metal such as Zr, x is the valence of M and L 1 is a ligand, at least two of L 1 being optionally substituted cyclopentadienyl hydrocarbon and the other of L 1 being hydrocarbon, alkoxy, aryloxy, trialkylsilyl, halogen or hydrogen) and (b-II) a second transition metal compound ML 2 x (in which M and x are as defined above and L 2 is a ligand, at least two of L 2 being cyclopentadienyl substituted with 2-5 substituents selected from methyl and ethyl and the other of L 2 being hydrocarbon, alkoxy, aryloxy, trialkylsilyl, halogen or hydrogen). By using the catalyst, an olefin polymer having high melt tension and good moldability may be prepared.
Patent CA-2104491-C (CA)
Inventor: ARSENAULT JULIEN
IPC: B62D53/08
Filed: 1993-08-20
Granted: 1998-07-21
Abstract: The weight transfer device is for a tractor trailer including a tractor for pulling a trailer.   The device comprises  a  mount  having  opposite  ends  provided  with attaching elements  for attaching transversely the mount between a pair of rearward parallel frame side rails of the tractor behind its fifth wheel.  The mount receives the base of a bag unit having an upper surface over the base at an adjustable distance therefrom and an inflatable air bag between the base and the upper surface for adjusting the distance.   A bearing structure is mounted on top of the upper surface for upwardly pushing against the trailer without significantly hindering its pivotal movement around the fifth wheel.   The device further comprises a compact guiding mechanism for vertically guiding the upper surface of the bag unit while preventing the bag from drooping when the bearing structure is pushing against the trailer.  The guiding mechanism consists of an elongated member having an end connected to the upper surface and an opposite end projecting  downwards  therefrom  inside  the  bag,  and  an upright sleeve connected to the mount beneath the bag for slidably  receiving  the  opposite  end  of  the  elongated member.2
Patent CA-2106412-C (CA)
Title: Glass fiber composition with improved biosolubility
Inventor: SCHAAL KEVIN D
IPC: C03C3/089
Filed: 1993-09-17
Granted: 1997-10-14
Abstract: Described is an inorganic fiber comprising silica dioxide, calcium oxide, and alkali oxide having a free energy of hydration greater than (more positive than) -5.00 kcal/mol, an enthalpy of formation less than (more than negative than) -210.0 kcal/mol, a dissolution rate in simulated extra cellular fluid greater than 750 (calculated as nanograms of fiber/per square centimeter of fiber surface area/per hour) having an average fiber diameter not greater than 4.5 micrometers.   Also described is a method of manufacturing the fibers.
Patent CA-2108474-C (CA)
Inventor: OBATA ATSUOMI
IPC: B60L50/16
Filed: 1993-03-05
Granted: 1999-06-15
Abstract: In a braking and auxiliary driving means for an internal combustion engine in a vehicle which produces braking and auxiliary motive power by converting electric al energy in both directions between the polyphase AC circuit of a squirrel-cage polyphase induction machine linked to the rotary shaft of the internal combustion engine and the DC circuit of an electricity storage means, the electricity storage means comprises an electrosta tic capacitive circuit. A low-voltage storage battery is provided in addition to this electrost atic capacitive circuit, and this can be coupled to the electrostatic capacitive circuit by a bi directional DC-to-DC converter.
Patent CA-2113109-C (CA)
Inventor: ANTONINI GERARD
IPC: G21F9/32
Filed: 1992-07-09
Granted: 1997-01-21
Abstract: A method for incinerating a combustible material (1), wherein, prior to the combustion process (13), the material is divided (2) into particles, the particulate material is added (3) to an aqueous medium such that the proportion of solid material to liquid is no greater than 35 % wt. and the suspension is foamed and pressurized by inserting an oxidant gas (10) and surfactant additives (9) into a mixer (8) for the suspension.