baber/WOPTO huggingface dataset:
Patent CA-2121616-C (CA)
Inventor: DIXON JAMES M
IPC: F26B21/00
Filed: 1994-04-19
Granted: 2004-01-13
Abstract: An indirect heater for heating air to be used for drying, curing or heating having an enclosure housing a circulation fan, filter bank, heat exchanger module and a burner. The heat exchanger has a bundle of tubes received between a pair of spaced apart headers. A cylindrical burner tube extends through one header and the tube bundle and opens into the other header. The burner flame and gaseous combustion products are discharged into a replaceable sacrificial sleeve that is telescopically received in the burner tube. A fan recirculates the heated gases through the interior of the sleeve, burner tube and the tubes of the bundle to increase heat transfer to the exterior air. The enclosure has a base, two pairs of opposed sidewalls and a top wall overlying the sidewalls. Each sidewall has an inner skin, a framework of trusses, an outer skin and insulation between the skins. The inner skin consists of airtightly joined skin panels supported by the frame and which have expansion gaps between adjoining skin panels to permit thermal expansion and contraction. The outer skin has interlocking panels held in place without contacting directly the frame or inner skin for minimizing heat transmission through each sidewall.
Patent CA-2122259-C (CA)
Title: Dual voltage power supply
Inventor: HAUN ANDY ALLEN
IPC: H02H9/04
Filed: 1993-08-31
Granted: 1999-07-13
Abstract: For use in a trip unit, a switched current shunting arrangement in a circuit interruption tripping system couples the current transformers (A, B, C, G, F) to relatively low voltage and it accumulates a high level of energy quickly at power-up so that the tripping solenoid (128) can promptly be energized after the detection of a spurious fault condition. The arrangement regulates supply current from the current transformers to a trip voltage capacitor (78) and to a supply capacitor (20') at the input of a voltage regulation circuit. The current transformer charges the trip voltage capacitor to a first prescribed voltage level, and a current shunting circuit (142, 144) shunts current passing from the current transformer to the supply capacitor, such that during normal operation the supply capacitor is charged to a second prescribed voltage level, which is less than the first prescribed voltage level.
Patent CA-2122653-C (CA)
Inventor: YU ROBERT C U
IPC: G03G5/10
Filed: 1994-05-02
Granted: 1999-11-23
Abstract: A flexible electrostatographic imaging belt comprising a support layer, a coating including a film forming polymer, and a permanent skewed seam. The electrostatographic imaging belt may be fabricated by providing a sheet having a parallelogram shape with slanted ends, the sheet having a first major exterior surface opposite and parallel to a second major exterior surface, overlapping an edge of the first major exterior surface adjacent a first of the slanted ends onto an edge of the second major exterior surface of adjacent a second slanted of the ends to form a skewed seam, and securing the ends to each other to form a permanent skewed seam. This skewed seam electrostatographic imaging belt may be used in an eledrostatographic imaging process.
Patent CA-2124425-C (CA)
Inventor: CONTE UBALDO
IPC: A61K9/22
Filed: 1994-05-26
Granted: 1999-12-21
Abstract: Pharmaceutical tablets releasing the active substance after a definite period of time, consisting of:            - a core containing the active substance and polymeric substances which swell and/or gel and /or erode on contact with water or with aqueous liquids;          -  a layer applied externally to said core, suitable to prevent the immediate release of the active substance contained in the core and to allow the release of said active substance after a definite period of time, consisting of natural and/or synthetic polymeric materials of the class of the hydrophilic polymers which erode and/or gel and/or dissolve in an aqueous medium;          - a possible gastroresistant and enterosoluble coating.
Patent CA-2129523-C (CA)
Inventor: MCDONALD ROBERT R
IPC: F27D1/00
Filed: 1993-02-08
Granted: 1999-08-24
Abstract: Described is a material handling apparatus for processing heated formed ferrous metal products and/or glass products comprising a face centered cubic crystal intermetallic alloy of a metal aluminide having the property of withstanding repeated thermal cycling from ambient temperature to about 1600 ° F wherein the metal is selected from the group consisting of a group VIII metal of the Periodic Table. Also described is an aluminide roll that also is characterized as retaining its ultimate tensile strength at 1600 °F of at least 75 % of the tensile strength the roll had at ambient room temperature.
Patent CA-2133410-C (CA)
Title: Asphalt production plant
Inventor: MILSTEAD JOHN
IPC: E01C19/10
Filed: 1993-04-05
Granted: 2004-03-30
Abstract: A plant which is adapted to process mixtures of recycled paving and aggregate, and which comprises a rotary drum dryer (12) for heating and drying stone aggregate, and an elevator (16) for conveying the heated and dried aggregate to an elevated discharge location. A batch tower (20) is positioned adjacent the elevator (16), and the batch tower (20) comprises an aggregate sizing screen (30) which receives and segregates the aggregate by size, and several underlying aggregate storage bins (32-35), with each aggregate bin receiving aggregate of predetermined average size from the sizing screen. Also, a recycle bin (42) is positioned between and in alignment with the aggregate bins (32-35). A weigh hopper (38) is provided for receiving the aggregate and/or recycle malarial from the bins, and a pugmill (40) is positioned below the weigh hopper (38) for mixing the material with hot liquid asphalt and then delivering the resulting mix into an underlying truck. A gate (25) is provided for delivering the material from the elevator (16) into either the sizing screen (30) or the recycle bin (42). In addition, a weigh belt conveyor (14) is provided for delivering the aggregate to the drum dryer at a predetermined feed rate by weight, and a weigh belt conveyor (24) is provided for delivering the recycle material into the elevator (16) at a predetermined feed rate by weight.
Patent CA-2137191-C (CA)
Title: Instrument and method for testing local area network cables
Inventor: HINDS MARK E
IPC: G01R31/08
Filed: 1994-12-02
Granted: 1998-12-15
Abstract: An instrument and method for the troubleshooting and verification of copper-wire local area network (LAN) cable systems provides a series of resistance and capacitancemeasurements between all possible wire pairs using a pair of switch matrices and a software method for evaluating the measurements which are stored in a two-dimensional matrix. The stored measurements are evaluated against predetermined figures of merit and the decision pattern in matrix form is compared to that of a known good LAN cable system. Error messages responsive to mismatches are generated and presented to the operator via a user interface. Near-end cross talk (NEXT) isolation is evaluated using a mathematically calculated differential capacitance technique. Error messages aregenerated responsive to difference capacitance values larger than a figure of merit correlated to an acceptable level of NEXT isolation.
Patent CA-2140068-C (CA)
Title: Improved resilient seed firming attachment for a planting  machine
Inventor: KEETON EUGENE G
IPC: A01C5/06
Filed: 1995-01-12
Granted: 1999-12-21
Abstract: A resilient seed firming attachment for a planting machine designed to effectively place seed at a consistent depth and at consistent spacing. The attachment may be of any geometrical configuration having a length adequate to firm the seed in the opened furrow and is mounted in a position trailing the discharge end of a seed boot. The resilience of the seed firming attachment being variable and having a control mechanism to ensure that sufficient force is applied to the seed to firm it into the soil at the desired planting depth. By controlling the amount of flex, the proper seed planting depth and firming will be accomplished in a variety of soil and moisture conditions.      The seed firming device is also variable so as the amount of down pressure will not modify the depth desired and obtained by the furrow opening device.
Patent CA-2140076-C (CA)
Inventor: GREENE ROBERT
IPC: A23L7/113
Filed: 1995-01-12
Granted: 2005-11-22
Abstract: A process for the preparation of instant fried noodles which comprises mixing wheat flour with water and other conventional noodle ingredients to form a noodle dough, sheeting the dough, cutting the dough into longitudinal strips of noodles, steaming the strips of noodles to gelatinise the starch, cutting and moulding the strips of steamed noodles into cake form, drying the moulded noodle cakes for a period of up to 10 minutes at a temperature of from 85° to 110°C to a moisture content of less than 30% by weight, and then frying the dried noodles in frying oil.
Patent CA-2143274-C (CA)
Inventor: CONNOLLY JAMES D
IPC: B07B1/46
Filed: 1995-02-23
Granted: 1998-07-14
Abstract: A center retainer assembly for a panel mounting system of a vibrating screen utilizes an elongated bolting bar which is encased in a resilient material that includes an elongated center retainer.          The bolting bar and its encasing resilient material are situated in a channel portion of an upwardly facing retainer channel.   The retainer channel is, in turn, secured by way of a mounting plate to a cross tube of the vibrating screen apparatus.
Patent CA-2146119-C (CA)
Inventor: GOUGH ARTHUR
IPC: C07C5/52
Filed: 1993-10-15
Granted: 2005-01-11
Abstract: A hydrocarbon feedstock (10) is cracked (12), and then the cracker product is compressed (18) and separated (20) into various hydrocarbon fractions including a stream containing hydrocarbons more highly unsaturated than mono-olefins (30). That stream is used for transhydrogenation (56) with at least one paraffin (42,52) and the products from transhydrogenation (58) are combined with the cracker product before the compression thereof.
Patent CA-2146737-C (CA)
Title: Integrated optical isolator
Inventor: CHENG YIHAO
IPC: G02B6/34
Filed: 1995-04-10
Granted: 2001-08-14
Abstract: An integrated optical isolator arrangement is described that is capable of isolating an input optical signal and coupling a pump signal. The coupler includes a pair of lenses with an isolator disposed therebetween. The isolator is sandwiched between a splitter/filter and a wavelength selective device. An end face of each lens has an input and an output port for receiving and transmitting optical signals. The splitter/filter is selected to transmit some of the input signal on a first input port and to reflect the remaining untransmitted portion of the input optical signal to a first output port proximate to the first input port. The wavelength selective device allows the input signal from the first input port to pass through it to a second output port, and in addition, reflects a pump signal transmitted on the second input port to the second output port for combination with the input optical signal.
Patent CA-2152625-C (CA)
Title: Closed loop pulse width modulator inverter with volt-seconds feedback control
Inventor: GARCES LUIS J
IPC: H02M5/458
Filed: 1993-12-06
Granted: 2004-12-14
Abstract: A closed loop pulse width modulator (PWM) inverter corrects for variations and distortion in the output AC voltage waveform caused by non-linearities of the switching devices or changes in the DC link voltage. A signal is generated that is a volt-seconds representation of the voltage error between a voltage command and the actual AC output voltage of the PWM inverter. The volt-seconds error signal becomes a controlling means in the closed loop of the PWM inverter to regulate the output AC voltage of the PWM inverter. Another signal that represents changes in the DC link voltage also modifies the voltage command signal. The system will compensate for the non-linear behavior of the PWM inverter due to deadtime, minimum on-times and off times, and DC link voltage variations and voltage drops across the switching devices, and will also allow the operation of the inverter in a linear fashion for the region of operation when one or more of its phases are saturated, i.e., either full on or full off.
Patent CA-2153890-C (CA)
Inventor: DEETZ DAVID W
IPC: G01N31/00
Filed: 1993-01-14
Granted: 2001-03-27
Abstract: A method and system for controlling the concentration of one or more gaseous species of interest in a sample medium throughout a range of temperature in which a temperature related, time variable dominant independent source of the gaseous species of interest is used to control the partial pressure of one or more gaseous species of interest contained in the sample medium in a manner such that the concentration of the gaseous species of interest in the sample medium remains essentially the same over the temperature range. The source of the gaseous species of interest comprises a reservoir containing an amount of a temperature sensitive source of the gaseous species of interest. The sample and the reservoir are contained in separate fluid-tight, gas-permeable enclosures further confined by a common substantially gas-tight enclosure.
Patent CA-2154945-C (CA)
Inventor: VEHMAANPERA JARI
IPC: C12N1/15
Filed: 1995-07-28
Granted: 2010-07-06
Abstract: The isolation and cloning of Actinomadura spp. xylanases having a molecular weight of 35 kDa and 50 kDa are described. These xylanases are thermostable and useful in biobleaching of wood pulp.
Patent CA-2161586-C (CA)
Title: Method of increasing the speed at which packing may be replaced in a stuffing box and a stuffing box
Inventor: JACKSON GREGORY HOWARD
IPC: E21B33/12
Filed: 1995-10-27
Granted: 2003-01-07
Abstract: A method of increasing the speed at which packing may be replaced in a stuffing box.  This method involves the step of providing a stuffing box housing which has an annular packing seat into which packing is received.   The packing seat is divided into a plurality of threadedly connected annular nesting segments which, when nested, provide a conterminous internal sidewall for the packing seat.  Packing is removed on a segment by segment basis as the stuffing box housing is disassembled.
Patent CA-2165477-C (CA)
Inventor: JOSEFSSON PERCY
IPC: F16J15/12
Filed: 1995-04-24
Granted: 2002-11-12
Abstract: The invention relates to a compressible, shear-force absorbing and sealing l aminate structure comprising two rubber layers and an intermediate metal layer. According to the invention, the laminate structure  comprises two thin carrier-calendared rubber films, eac h having a thickness of at least about 0.05 mm, and a thin metal plate disposed betwe en the rubber films, wherein each rubber film is affixed  to the plate by vulcanization.  The laminate finds use as gasket material, for instance in the manufacture of cylinder head gaskets for  internal combustion engines.
Patent CA-2166291-C (CA)
Title: Htlv-iinra compositions and assays for detecting htlv infection
Inventor: GUIDINGER PEGGY
IPC: C12N5/10
Filed: 1994-06-30
Granted: 2008-05-13
Abstract: Compositions including lysates, DNA and amino acid sequences derived from HT LV- II NRA are provided. Assays for detecting HTLV infection that employ the disclosed HTLV-II NRA compositions are also provided. Kits for performing HTLV assays are further provided.
Patent CA-2171321-C (CA)
Inventor: MEIER HENRY A JR
IPC: C09K3/16
Filed: 1994-12-05
Granted: 1997-11-18
Abstract: Microscopes having plastic components such as knobs, covers and eyepiece rings are rendered antistatic by using static charge dissipating plastic materials instead of conventional plastics. Such antistatic microscopes are especially useful in the manufacture and inspection of semi-conductors which are easily damaged by exposure to static charges.
Patent CA-2171923-C (CA)
Title: Biodegradable pour point depressants for industrial fluids derived from biodegradable base oils
Inventor: MACPHERSON IAN
IPC: C10M169/04
Filed: 1996-03-15
Granted: 2006-06-06
Abstract: The invention involves the use of biodegradable polyalpha olefins ("PAOs") to treat biodegradable industrial fluids, such as lubricants, hydraulic fluids, fuel oils, and the like, to: (a) reduce their pour point; (b) improve their oxidation stability performance; and/or, (c) improve their hydrolytic stability performance. A preferred industrial fluid is mixture of vegetable oil and branched alkane where the average molecular weight of the alkane is about 200-400, and the alkane additionally has a sufficient degree of branching to have a pour point of about -25°C or lower.
Patent CA-2172029-C (CA)
Inventor: FUJINE MANABU
IPC: C22F1/00
Filed: 1996-03-18
Granted: 2001-05-15
Abstract: A metal sintered body composite material which can exhibit superior seizure resistance even when light metal is softened, and a method for producing the same. The production method uses iron base raw material powder including C and one of Cr, Mo, V, W, Mn, and Si, and comprises the steps of forming and sintering a powder compressed article so as to obtain a porous metal sintered body having a space lattice structure having pores, impregnating the pores of the porous metal sintered body with an aluminum alloy and solidifying the aluminum alloy, applying aging treatment by heating and holding the composite material at an aging treatment temperature range,  whereby a metal constituting the porous metal sintered body has a micro-Vickers hardness of 200 to 800.
Patent CA-2172146-C (CA)
Title: Dispositif de precipitation electrostatique
Inventor: TSUCHIYA TAKASHI
IPC: B03C3/06
Filed: 1995-05-08
Granted: 1999-03-30
Abstract: L'intérieur d'un boîtier (2) d'un dispositif de précipitation électrostatique (1) est divisé en compartiments par des tubes d'acier carrés (11) de façon à former définit une chambre d'entrée (4) et une chambre de sortie (26), qui communiquent entre elles, et des électrodes à tige (23) sont introduites dans les tubes d'acier carrés (2). Un passage de guidage (14) est en outre formé dans le boîtier (2) en vue de faire communiquer l'intérieur des tubes d'acier carrés (11) avec la chambre d'entrée (4). Lorsque de l'air contenant du brouillard ou autre est introduit dans les tubes d'acier carrés (11) à partir de la chambre d'entrée (4) alors qu'une tension est appliquée aux tubes d'acier carrés (11) et aux électrodes à tige (23), les particules fines telles que celles du brouillard dans l'air se déposent sur la surface intérieure des tubes d'acier carrés (11) et sont ainsi enlevées de l'air. Une partie de l'air nettoyé est ramené à la chambre d'entrée (4) en passant par le passage de guidage (14) pour se mélanger avec de l'air contenant du brouillard et autre dans la chambre d'entrée (4). Cela réduit la teneur en brouillard de l'air qui est introduit dans les tubes d'acier carrés (11).
Patent CA-2176849-C (CA)
Inventor: MCGOWAN ALAN WILLIAM
IPC: A63B67/14
Filed: 1996-05-17
Granted: 1997-12-30
Abstract: A device for use in the sport of curling allows a curler to control from a standing position the launch and trajectory of a standard curling stone. The device comprises an elongated rigid member with a grip and arm brace at one end and an open housing for receiving a curling stone handle at the other. A pair of caliper jaws close over the housing opening and allow the curling stone to be lifted by its handle from the playing surface.
Patent CA-2182791-C (CA)
Inventor: KINGDON KEVIN W
IPC: G06F12/00
Filed: 1995-12-15
Granted: 2000-06-06
Abstract: Méthode et système permettant d'assurer un contrôle d'accès pour les objets d'un répertoire de réseau réparti, en utilisant la résolution statique pour déterminer la valeur des attributs d'objets. Un premier objet est doté d'un attribut Equivalents de Securité (Security Equals) et un second objet est doté d'un attribut Homologues (Equivalent to Me). Lorsqu'une demande d'objet du premier objet au second objet est reçue, on contrôle l'autorisation d'accès en vérifiant si les deux attributs sont synchronisés. Ils le sont lorsque l'attribut Security Equals du premier objet inclut le second objet, et lorsque l'attribut Equivalent to Me du second objet inclut le premier objet. Une méthode applicable à la synchronisation des deux attributs est également décrite dans l'invention.
Patent CA-2189801-C (CA)
Title: Method for production of microcapsule type conductive filler
Inventor: DATE HIROAKI
IPC: C09J9/02
Filed: 1992-10-23
Granted: 2000-12-12
Abstract: A method for the production of the microcapsule (MC) type conductive filler of this invention comprises (a) a step involving immersing minute conductive particles in an affinity agent thereby treating the surface of the minute conductive particles, (b) a step involving immersing and dispersing the surface-treated minute conductive particles in an epoxy monomer thereby forming a suspension, and (c) a step involving polymerizing the monomer in the suspension thereby forming a thermosetting insulating polymer on the surface of the minute conductive particles. There is also disclosed an MC type conductive adhesive agent having dispersed in an adhesive agent an MC type conductive filler coated with a thermosetting resin, the thermosetting resin coating having a thickness of not more than 3 µm and having no pinholes.
Patent CA-2190689-C (CA)
Inventor: PETROVIC ZMAJ
IPC: B65G39/09
Filed: 1996-11-19
Granted: 2006-05-30
Abstract: A conveyor roller for motorized conveyors including a lateral friction torque limiting mechanism to drive a roller tube via a rotation driving element. The torque limiting mechanism includes a first friction surface associated with the roller tube and a second friction surface associated with the drive element. The second friction surface is made of a magnetic material. The first and second friction surfaces are applied one against the other through a magnetic field generated by permanent magnets. When the force required to rotate the roller tube is higher than the frictional force between the first and second friction surfaces, slippage will occur between the first and second friction surfaces, stopping the rotation of the roller. The drive element includes ventilation channels to thereby cool the friction surfaces.
Patent CA-2191657-C (CA)
Inventor: DOYLE NOEL
IPC: D06F53/00
Filed: 1996-11-29
Granted: 2006-03-14
Abstract: The invention relates to an improved clothes line system for automatically securing clothes onto a main clothes cable. More specifically, the clothes line system includes a main cable on which clothes are placed and a secondary cable with equally spaced apart clothes pins. Each clothes pin is capable of engaging the main cable at different holding positions. The clothes line system further features a support member to prevent the main cable from sagging under the effect of the weight of clothes beyond an acceptable distance within which the clothes pins can automatically engage the clothes. The invention also provides a clothes line system with a first and second cable where the first cable is continuos with the second cable . A cable connector element for use with the clothes line system enables one section of a continuos cable to form the main cable and a second section of the continuous cable to form the secondary cable.