baber/WOPTO huggingface dataset:
Patent CA-2240308-C (CA)
Inventor: WILLIAMS NICHOLAS J
IPC: F16K3/02
Filed: 1998-06-11
Granted: 2002-02-19
Abstract: A packingless gate valve is disclosed which includes a housing having opposed similar housing halves with primary resilient sleeve units which compressibly engage each other in the valve open condition and engage opposite sides of the gate in the valve closed condition.  A secondary resilient seal unit is positioned above the primary sleeve units within the housing and is secured between the housing halves.  The secondary seal unit engages the gate during the opening and closing cycles and prevents any discharge seeping between the primary sleeves from leaking to the atmosphere around the gate or on the actuator end of the valve.  An enlarged clean out area cast into the housing extends circumferentially around the primary sleeve units in one embodiment so as to provide containment for any discharge during an actuating cycle.  The housing is further provided with flush ports in fluid communication with the clean out area to allow controlled draining or flushing of the contained slurry.  The gate valve construction of the present invention results in no leakage to the outside when the valve is fully open and no leakage to the outside or past the gate internally when the valve is fully closed.
Patent CA-2246742-C (CA)
Title: Systeme de culture a l'air comprenant un systeme de gestion
Inventor: COSTA GIANCARLO
IPC: A01G31/06
Filed: 1997-01-30
Granted: 2004-10-12
Abstract: L'invention concerne un système de culture à l'air, mis en oeuvre sur des bancs fixes ou mobiles (4) se trouvant dans une ou plusieurs serres (1). Ce système comprend un système de gestion avec une unité centrale (3) et une ou plusieurs unités périphériques (2). Au moins une unité périphérique (2) se trouve dans chaque serre (1). L'unité centrale (3) permet une commande et une gestion des opérations du système, en modifiant les valeurs de référence des paramètres (température de la serre, caractéristiques physiques et chimiques de la solution nutritive, etc.) mesurés par chaque unité périphérique (2), de manière à ce que la croissance des plantes disposées sur les bancs (4) dans la serre (1) gérée par l'unité périphérique (2) se fasse aussi près que possible des conditions idéales. En outre, l'unité centrale (3) recueille et traite les valeurs des paramètres mesurés (éventuellement préalablement traitées) par les unités périphériques, à des fins statistiques et indicatives. En outre, l'invention concerne une formulation particulièrement avantageuse de la solution nutritive.
Patent CA-2248947-C (CA)
Inventor: STROM JAMES
IPC: A61M1/36
Filed: 1997-01-21
Granted: 2001-03-27
Abstract: A combined venous and cardiotomy blood reservoir (10) is provided that includes a rigid shell (12) having a top (14), a bottom (16), and a continuo us side wall (18). The top and bottom walls (14, 16) are connected to the continuous side walls (18) so as to define a reservoir (10) for venous and cardiotomy blood. A double column structure (20, 24) is provided within the blood reservoir (10), the first column (20) for receiving the degassing veno us blood and the second column (24) for receiving, filtering and defoaming cardiotomy blood.
Patent CA-2253457-C (CA)
Inventor: BITOWFT BRUCE KEVIN
IPC: B65D85/07
Filed: 1997-04-28
Granted: 2003-08-19
Abstract: A unit (10) comprising an array (11) of at least two substantially parallelepipedal flexible packs (12), said packs (12) comprising compressed flexible articles (14) encased in a flexible bag (13), said compressed articles (14) having been compressed to between 20 percent and 70 percent of their uncompressed volume in a direction of compression C, said array (11) comprising a top face (15), a bottom face (16), a front face (17), a back face (18) and two side faces (19, 20) characterised in that said unit (10) comprises a cold stretchable plastic film (21) disposed adjacent at least a part of at least four consecutive faces (15, 16, 17, 18, 19, 20) of said array (11) and said cold stretchable plastic film (21) non-adhesively attaches to said top face (15), said bottom face (16), said front face (17), said back face (18) and said side faces (19, 20) of said array (11).
Patent CA-2255912-C (CA)
Title: Process for preparing gamma-butyrolactone, butane-1,4-diol and tetrahydrofuran
Inventor: TUCK MICHAEL WILLIAM MARSHALL
IPC: C07B61/00
Filed: 1997-05-12
Granted: 2006-10-10
Abstract: A process is described for the production of at least one C4 compound select ed from butane-1,4-diol, ~-butyrolactone and tetrahydrofuran, which includes the step of hydrogenation in the vapour phas e of maleic anhydride in the presence of a heterogeneous hydrogenation catalyst, which process comprises: (a) contacting a vaporous stream containing maleic anhydride vapour, water vapour, and carbon oxides in an absorption zone with a high boiling organic solvent havi ng a boiling point at atmospheric pressure which is at least about 30 .degree.C higher than that of maleic anhydride thereby to form a solution of maleic anhydride in the high boiling organic solvent; (b) recovering from the absorption zone a waste gas stream; (c) contacting the solution of maleic anhydride in the high boiling solvent with a gaseous stream containing hydrogen thereby to strip maleic anhydride therefrom and to form a vaporous stream comprising hydrogen and maleic anhydride; (d) contacting material of the vaporous stream of step (e) in a hydrogenation zone under hydrogenation conditions in the presence of a heterogeneous hydrogenation catalyst thereby to convert maleic anhydride to at least one C4 compound selected from butane-1,4-diol, ~-butyrolactone and tetrahydrofuran; and (e) recovering fro m the hydrogenation zone a product stream containing said at least one C4 compound.
Patent CA-2259509-C (CA)
Title: Method and device for treating a liquid medium
Inventor: CANIVET YVES
IPC: C02F1/36
Filed: 1997-07-04
Granted: 2006-11-28
Abstract: Device for treating a liquid medium comprises, communicating with a reservoir (6) of liquid to be treated, a treatment vessel (2) comprising an emitter (1) of high frequency ultrasonic waves (4) emitted towards the interior of compartment (2) and an emitter (3) of microbubbles (5) of diameter < 1 mm; the emitters being positioned so as to ensure the emission of microbubbles (5) in the field of the ultrasound (4) emitted in (2).
Patent CA-2260944-C (CA)
Inventor: GREGORIO PEDRO
IPC: G01B5/008
Filed: 1999-02-05
Granted: 2006-11-21
Abstract: A hand controller arm assembly provides for the sensing of the position of a handle at the end of an arm in the X and Y direction through supporting linkages, and in the Z direction through a hinge which permits the arm to rotate upwardly. The joints of this controller may be actuated to provide haptic feed-back.
Patent CA-2262143-C (CA)
Title: Vial retainer interface to a medication delivery pen
Inventor: KING CHRISTOPHER B
IPC: A61M5/24
Filed: 1999-02-17
Granted: 2003-07-15
Abstract: A medication delivery pen having a vial retainer with a side opening have flexible snap wings that spread to receive and retain a standard or threaded vial within the vial retainer. The vial retainer also includes an improved means of attaching the vial retainer to a pen injector body, using a cam and cam follower design together with a ratcheting mechanism to prevent removal of the vial from the medication delivery pen.  Alternatively, a release mechanism could be used so that the vial may be removed from the medication delivery pen. In addition, the vial retainer includes an opening for receiving the vial defined by a pair of flexible snap wings.
Patent CA-2268235-C (CA)
Title: Accessory network for an electronic trip unit
Inventor: ENGEL JOSEPH CHARLES
IPC: H01H71/00
Filed: 1999-04-06
Granted: 2008-07-08
Abstract: An electronic trip unit having a two-wire, asynchronous, serial communication accessory network that is connected to a number of unique digital and analog remote slave devices. The address for each slave device is set by its function so that the trip unit does not have to be programmed in the field each time an accessory is added to the system. The network is capable of two-way communication when requested by the electronic trip unit. Accessory network communication is controlled by a first microprocessor within the electronic trip unit or alternatively by a network interface gateway. The first microprocessor controls voltage based and metering functions while a second microprocessor controls overcurrent and instantaneous protection functions of the trip unit. The second microprocessor also has the capability of communicating with a central control network.
Patent CA-2274151-C (CA)
Title: Lampshade fitting for shading a lamp bulb and a lamp socket
Inventor: WU SAN-CHI
IPC: F21V17/08
Filed: 1999-06-10
Granted: 2004-09-14
Abstract: A lampshade fitting includes a retaining member mounted on a shank, and having at least two resilient arms that extends downwardly to straddle away from an axis of the shank. The arms have proximate portions and distal portions. The biasing action between the proximate portions is smaller than that between the distal portions.      A restraining member has at least two engaging portions at its inner periphery for sliding engagement with the arms so as to move from a first position where the engaging portions act against the biasing action of the distal portions, to a second position where the engaging portions act against the biasing action of the proximate portions.      A lampshade has an annular upper wall and a skirt portion.      When the upper wall is brought to receive the distal portions while the restraining member is at the first position, it will push the restraining member toward the shank. When the upper wall continues to push the restraining member to the second position, the skirt portion will be biased by the distal portions.
Patent CA-2282978-C (CA)
Inventor: BALINT GREGORY J
IPC: E01F9/619
Filed: 1999-09-22
Granted: 2006-05-23
Abstract: A retro-reflective sign is formed of a lens plate bearing indicia and having a front face and a rear face. The rear face is formed with a plurality of adjacent cube corner configurations having central axes, which configurations may reflect light rays approximately parallel to incoming light rays. The front face can be formed with adjacent rows of prisms that are saw-tooth shaped in cross-section. The prisms overlap the configurations and are shaped to bend incoming light rays towards the axes of their respective overlapped configurations and to re-bend the reflected light rays parallel to the incoming light rays. The lens plate is bowed so that its front face is convex and its rear face is concave. A rearwardly bowed support plate covers the rear face of the lens plate and the two plates are secured together along their peripheral edges for rigidifying the sign. The rear plate may be sufficiently light transparent to pass some light therethrough to backlight the indicia on the front plate.
Patent CA-2283569-C (CA)
Inventor: YOON YOUNG SIK
IPC: C03B37/016
Filed: 1998-03-10
Granted: 2002-12-10
Abstract: There is provided a high-purity silica glass fabricating method using a sol- gel process. In the method, a first sol is formed by mixing 100 parts by weight of fumed silica powder with between 100 to 300 parts by weight of deionized water. The first sol is gelled, dried, powdered, and thermally treated. A second sol is formed by mixing the thermally-treated first sol wi th between 100 to 200 parts by weight of deionized water and 20 to 50 parts by weight of non-thermally treated original fumed silica powder. The second sol  is gelled, dried, and sintered. Thus, a high-purity silica glass is formed.< /SDOAB>
Patent CA-2296331-C (CA)
Title: Element de fixation a rivetage automatique
Inventor: LADOUCEUR HAROLD A
IPC: F16B39/00
Filed: 1998-08-03
Granted: 2007-01-02
Abstract: L'invention se rapporte à un élément de fixation à rivetage automatique destiné à être fixé de manière permanente à un panneau métallique, dans un orifice de ce dernier, au moyen d'une filière présentant une cavité concave annulaire. Ledit élément de fixation comporte une partie de rivetage tubulaire, une partie bride radiale et une partie de fixation. Les surfaces interne et externe de la partie de rivetage tubulaire sont inclinées de manière relativement uniforme en direction de la partie bride radiale de sorte que l'épaisseur de la partie de rivetage tubulaire, au niveau de son extrémité libre, soit inférieure à l'épaisseur adjacente à la partie bride radiale. Selon le mode de réalisation préféré, la surface interne de la partie de rivetage tubulaire est cylindrique et sa surface externe s'effilant vers l'intérieur en vue de former un cône orienté vers ladite extrémité libre et ce, aux fins de réduire la force nécessaire pour déformer dans le sens radial, et vers l'extérieur, l'extrémité libre de la partie tubulaire. En outre, la surface externe de la partie bride radiale est généralement polygonale et présente des surfaces latérales concaves courbées dans le sens radial et vers l'intérieur, ces surfaces étant séparées par des surfaces périphériques courbées et convexes relativement minces, ce qui permet de réduire la force nécessaire pour entraîner la partie bride dans le panneau au cours de l'installation finale de l'élément de fixation.
Patent CA-2300161-C (CA)
Title: Oxazolidine hardeners for bonding wood articles with resorcinol resins
Inventor: WU GAOMING
IPC: B27N3/00
Filed: 1998-08-14
Granted: 2008-02-05
Abstract: An improved oxazolidine-based hardener to be used with a resorcinol resin or a tannin resin as the adhesive for the bonding of wood articles. Preferably, an oxazolidine is combined with particulate silic a, and the resin is combined with a base such as NaOH. The adhesive based on the improved hardener can be used to glue wood particles t o pass wet strength requirements after the glue is cured at room temperature for under 24 hours. The improved hardener composition is storage stable; it can be prepared anytime before its use and, thus, eliminate the need to prepare a hardener immediately prior to the glue use. Since it is formaldehyde-free, it eliminates the safety issues associated with handling formaldehyde or paraformaldehyde. Also, the hardener provides flexible gel time or working time. Since the resins can be cured at room temperature, heating in an oven is not neede d but could be used to reduce curing time. If radio frequencies are used to cure the resins, the exposure time can be reduced.
Patent CA-2300192-C (CA)
Title: Nucleic acid probes for detecting candida species
Inventor: LOTT TIMOTHY J
IPC: C12Q1/68
Filed: 1998-07-30
Granted: 2010-11-23
Abstract: The nucleic acid sequence encoding the internal transcribed spacer (2) region of Candida, the organism causing candidiasis, for various Candida species. Nucleic acid molecules useful as probes for detecting Candida species are described. The nucleic acid molecules are useful in methods for the detection and diagnosis of Candida infection in a sample or subject.
Patent CA-2304339-C (CA)
Title: Metal and ceramic containing parts produced from powder using binders derived from salt
Inventor: SACHS EMANUEL M
IPC: B22F1/10
Filed: 1998-09-25
Granted: 2007-04-03
Abstract: Parts made from powder use a material that originates from a salt to bind powder particles together. The salt may be provided dissolved in a solution, as molten salt, or as a dry powder. The figure is an electron micrograph of a cross section of a silver nitrate bound product with a skeleton of steel powder.
Patent CA-2306522-C (CA)
Title: Improved shelving base method and system
Inventor: MITTAG DOUGLAS C
IPC: A47B91/00
Filed: 2000-04-25
Granted: 2003-07-01
Abstract: A shelving unit apparatus and method comprises vertical posts arranged at corners of a rectangle. A plurality of shelves are vertically spaced from one another and supported by the posts. At a front of the shelving unit, a channel-shaped base rests on a floor on which the shelving unit rests, the base being attached to the front two posts at ends of the base by projecting head rivets received in keyhole-shaped slots in the front two posts. At least one aperture in the base portion of the base receives a mounting bolt to be anchored to the floor. The bottom shelf has its front end resting on an upper edge of the front vertical wall of the base. A rear of the bottom shelf is supported by a shelf holding element attached to the two posts at the rear of the shelving unit.
Patent CA-2308940-C (CA)
Inventor: SUZUKI SHIGERU
IPC: F24J3/00
Filed: 2000-05-19
Granted: 2003-08-19
Abstract: A heat generator comprises a partitioning wall 34 in opposed relation to a rotor in a heat generating area, in which the partitioning wall is formed with a supply groove 38 for introducing the viscous fluid to the outer peripheral area of the heat generating area from a storage area, and a recovery groove 39 for leading out the viscous fluid to the storage area from the outer peripheral area of the heat generating area. The shape, position and the mounting angle of the supply groove 38 and the recovery groove 39 are designed to set the outflow ratio a to not more than 0.92. The outflow ratio a is defined as the ratio (.alpha. = Qout1/Qin) of the amount Qout1 of the viscous fluid flowing out from the heat generating area due to the forcible transfer function of the recovery groove 39 to the total amount Qin of the viscous fluid flowing from the storage area into the heat generating area.
Patent CA-2309047-C (CA)
Title: Catalytic combustion heater
Inventor: HIROSE SHOJI
IPC: F23C13/00
Filed: 1998-10-19
Granted: 2005-01-25
Abstract: A catalytic combustion heater for a heat exchanger (1) which has a fuel gas flow passage (11), and a plurality of tubes (5) provided in the fuel gas flow passage, formed so as to have a fluid to be heated flow therein, and having catalyst support fins (51) fixed to an outer surface thereof, and which is formed so that the object fluid is heated by an oxidation reaction of the fuel gas. A control unit (6) is adapted to judge that a flow rate of the object fluid is low until the temperature of the object fluid detected by temperature detector (8) provided in the vicinity of an outlet of an object fluid flow passage (55) has not exceeded a predetermined level, for example, a boiling point thereof, to restrain the heat transfer to the interior of the tubes (5) and increase temperature of the fins (51) early to a catalyst activating level. The control unit is also adapted to increase the flow rate of the object fluid to a specific level after the temperature thereof has exceeded the boiling point thereof, to promote the heat transfer to the object fluid, whereby a desired high-temperature gas is obtained with a short starting time as the attainment of unnecessarily high temperatures of the fins (51) and tubes (5) is prevented.
Patent CA-2314597-C (CA)
Inventor: KETJANIJAN MARKAR
IPC: A21B1/22
Filed: 2000-07-21
Granted: 2009-02-17
Abstract: A commercial waffle maker has modular structure with a grid housing assembly removably and rotatable mounted on a separate supporting base. The waffle grids are removably mounted in the grid housings with a single screw such that they may be easily removed or replaced with interchangeable grids. The modular structure facilitates the mechanical parts of the device to be disassembled easily for thorough cleaning without having to ship the entire device to another offsite facility. The electrical components are securely housed in fully sealed compartments to prevent electrical hazard during cleaning and operation of the device.
Patent CA-2320063-C (CA)
Title: Dispositif pour mesurer la force d'inspiration
Inventor: FARR PHILIP WILLIAM
IPC: A61M16/00
Filed: 1999-02-15
Granted: 2008-11-18
Abstract: Cette invention a trait à un dispositif offrant une résistance à l'inspiration variable, lequel dispositif, qui convient à la mesure de la force d'inspiration d'un patient, comprend une enceinte (2) en communication avec un embout (4), cette enceinte (2) étant pourvue (a) d'un système d'étalonnage (9) destiné à mesurer le débit d'inhalation durant une inhalation par l'embout (4) et (b) d'un mécanisme à résistance variable (5) grâce auquel la résistance offerte à l'écoulement de l'air dans le dispositif peut être modifiée.
Patent CA-2322090-C (CA)
Inventor: RATHUNDE DALE FRANK
IPC: H04W92/20
Filed: 2000-10-03
Granted: 2004-02-17
Abstract: A wireless communication network includes at least two programmable application processors (APs) for message processing. Each AP runs one or more active radio control software (RCS) instances on behalf of a defined cell group and one or more standby RCS instances on behalf of at least one other cell group. Each cell in the network is connected to a pair of APs. One AP runs an active RCS instance on behalf of the cell and the other AP runs a standby RCS instance on behalf of the cell.  What is disclosed is a system and method for performing dynamic load balancing during system operation between a pair of APs (AP pair) serving at least one cell in common.  In a first step, selection is made, relative to at least one cell served by the AP pair, of a first RCS instance running as an active RCS instance on one member of the AP pair and a second RCS instance running as a standby RCS instance on the other member of the AP  pair. The first RCS instance is redesignated as a standby RCS instance for the cell and the second RCS instance is redesignated as an active RCS instance for the cell.  Active message processing is then transferred from the first RCS instance to the second RCS instance during network operation and without service interruption to the cell. In a variation the foregoing, an entire group of RCS instances (active or standby) can be moved from one AP to another. Also disclosed is a distributed mated-pair processor arrangement in which the standby RCS instances for a cell group are distributed across multiple APs.
Patent CA-2324044-C (CA)
Inventor: HUMMEL JOSEPH
IPC: D04B1/28
Filed: 2000-10-20
Granted: 2009-05-12
Abstract: A cut-resistant fabric machine-knitted two-ends-in from two different yarns, one of which contains cut-resistant fiber and the other of which contains fibers having a hardness that tends to dull a cutting blade.
Patent CA-2325337-C (CA)
Title: Use of live yeast cell derivative to treat bed sore pressure ulcers
Inventor: SHAFFER BURT
IPC: A61K9/127
Filed: 2000-11-09
Granted: 2009-12-15
Abstract: A stable composition is provided to treat and/or prevent pressure ulcer (bed sores) and related skin disorders, such as by topically applying to the skin the treatment composition containing an effective amount of a compound including live yeast cell derivative (LYCD), in a pharmaceutically acceptable anhydrous vehicle such as petrolatum as an occlusion in combination with a solvent, such as shark liver oil. The present invention includes use of a particular over the counter (OTC) skin protectant ointment containing biologically active live yeast cell derivative (LYCD) which is shown to be effective in the treatment of pressure ulcers in clinical trials. It has been found to minimize the risk of infection, patient discomfort and recovery times, as well as to provide a moist environment to facilitate healing, and for skin protection.