baber/WOPTO huggingface dataset:
Patent CA-2162191-C (CA)
Inventor: TOKUNAGA KIKUO
IPC: C01D5/02
Filed: 1995-11-06
Granted: 1999-09-21
Abstract: This invention relates to a process for removing sodium chloride and potassium salts, which are impurities concentrated and accumulated in pulp digesting chemicals, from ash collected from a soda recovery boiler.  This process comprises the steps of (a) mixing ash collected from the combustion exhaust gas of the soda recovery boiler with water to form a slurry, adjusting the pH of the slurry to 10 or less by the addition of sulfuric acid, adjusting the temperature of the slurry to 20C or above, and holding the slurry at that temperature for a sufficient time to cause sodium chloride and potassium salts present in the collected ash to be dissolved in the water; (b) cooling the slurry to a temperature below 20C by the addition of ice and/or water so as to precipitate solid matter therefrom; and (c) separating the slurry into solid and liquid components and recovering the solid component while discharging the liquid component out of the system.
Patent CA-2167110-C (CA)
Inventor: SCHLAGEL WILLIAM A
IPC: A01C7/00
Filed: 1996-01-12
Granted: 2003-04-01
Abstract: A grain distribution apparatus and method is disclosed for positive positional control of the providing distribution of grain among a plurality of receiving ducts.  A housing contains a distribution spout rotated by a drive motor among discharge positions at each receiving duct.  A control wheel connected to the spout rotates with the spout to a selected discharge position.  The control wheel has a plurality of sensible code clusters and position proof windows, one of each for each discharge position.  Each code cluster has a unique series of data digits and a series of sequencing digits adjacent the data digits.  The data digits and sequencing digits are serially read by a sensor.  The sensor is connected to a control processor for identifying the position of the spout.  The control wheel is configured as a driven sprocket and is engaged by the upper portion of a double wide roller chain around the entire periphery of the control wheel.  A planetary driver sprocket connected to a drive motor is engaged with the lower portion of the roller chain. The drive motor is controlled by the control processor.  When a specific receiving portion is selected the control processor operates the drive motor until the sensor senses the code cluster corresponding to the selected receiving portion.  After sensing said cluster the motor stops.  The sensing of a position proof window at the sensor confirms the spout is properly position at a receiving portion.
Patent CA-2171716-C (CA)
Title: Flow-metered pumping with load compensation system and method
Inventor: LIVINGSTON JAMES W
IPC: F04B49/06
Filed: 1994-09-20
Granted: 1999-03-23
Abstract: The present invention is an improved flow-metered pumping system using an air-backed diaphragm pump with load compensation. A variable motor speed controller is used to compensate for flow rate reduction caused by pressure effects. When the output pressure on the pump increases to a point where the load on the pump motor exceeds a specified threshold, the motor speed controller increases the speed of the motor to compensate for pressure induced diaphragm distortion losses and to achieve a substantially constant flow rate across a range of pump output pressures.
Patent CA-2178460-C (CA)
Inventor: BUNS JAMES
IPC: B23P19/00
Filed: 1996-06-06
Granted: 1999-06-29
Abstract: A compact and lightweight ball bearing feeding device for use in connection with a production process.  The device is easily adapted to be mounted at any point along such production process and includes a canister for maintaining a supply of ball bearings, a loading tube for transferring ball bearings from the canister to a two-position loading device, the loading device which places an individual ball bearing in an ejecting position and a delivery tube through which a ball bearing may be delivered to a desired production point.  The device does not require any electrical power, employs pneumatic actuation for its operation, automatically senses when a supply of ball bearings is running low and minimizes the introduction of contaminants and magnetism into the ball bearings.
Patent CA-2183736-C (CA)
Inventor: HIRT PETER
IPC: C08L67/02
Filed: 1995-02-09
Granted: 2001-07-31
Abstract: A process is disclosed for dyeing polytrimethylene terephthalate fibres (PTMT fibres).  The PTMT fibres are treated in an aqueous bath containing at least one dispersion dye at or below the bath boiling temperature.  The process is characterised in that the PTMT fibres are dyed without pressure and without carriers.  Dyeing starts at a bath temperature between 20 and 50°C, the temperature is brought within 20 to 90 minutes, preferably within 45 minutes, up to the bath boiling temperature or up to a dyeing temperature at the most 20°C lower than the bath boiling temperature, dyeing continues for at least 20 minutes at the dyeing or boiling temperature, preferably for 30 to 90 minutes, and the temperature is then brought down to 20 to 50°C, preferably at a cooling rate of 1°C per minute, so that at least 95% of the dye contained in the bath is absorbed by the PTMT fibres, and the dispersion dye impregnates the fibres at least down to a relative depth equal to 5% of the diameter of the fibres to be dyed.
Patent CA-2188719-C (CA)
Inventor: YAMAGUCHI TAKUJI
IPC: G03B17/26
Filed: 1996-10-24
Granted: 2000-04-04
Abstract: A filmwinding apparatus forwinding a film into a cartridge includes a film winding mechanism provided in an apparatus housing for turning a spool housed in the cartridge to wind the film around the spool. The film is inserted through a film inlet located on one side of the apparatus housing and fed toward the film winder. The cartridge loaded on a cartridge mount provided on another side of the apparatus housing is conveyed up to the film winding mechanism, where the cartridge is set in a film loading position. The film winding apparatus thus constructed offers easy operation without any special adjustment or treatment of the film or cartridge, yet featuring single-unit construction and portability.
Patent CA-2191843-C (CA)
Title: The preparation of nalbuphine having low levels of beta-epimer
Inventor: KAVKA FRANK
IPC: A61K31/485
Filed: 1995-05-16
Granted: 2006-05-02
Abstract: A process is described for the synthesis of nalbuphine. The process results in a product having very low levels of the undesirable .beta.-epimer. The process is a five-step synthesis that begins with a compound such as an N,O3-bis(alkoxycarbonyl)-14-hydroxynormorphinone.
Patent CA-2201475-C (CA)
Inventor: MCBRIDE ROBERT K
IPC: B32B3/24
Filed: 1995-10-27
Granted: 2001-03-27
Abstract: A process for the manufacture of a vapor permeable, liquid impermeable composite material (10, 12) comprising a three-dimensional apertured substra te (12) having a vapor permeable, liquid impermeable coating material (10) thereon, the substantially liquid impervious composite material, and an apparatus (38, 40, 42, 46, 48) for making the composite material, are diclosed. Successive portions of a continuous sheet of an apertural substrat e are passed into contact with a continuous moving perforated member. The coating material is supplied onto the substrate. The coated substrate is subjected to a vacuum which causes the coating material to flow onto the substrate material, and in certain embodiments, at least partially into the apertures in the substrate. The vacuum is maintained for a period of time sufficient for the coating material to adhere to the substrate. The coated portions of the substrate are continuously removed from the moving member.</ SDOAB>
Patent CA-2202566-C (CA)
Title: Digital signatures on a smart card
Inventor: VANSTONE SCOTT A
IPC: G06Q20/40
Filed: 1997-04-14
Granted: 2006-12-12
Abstract: A digital signature scheme for a "smart" card utilizes a set of prestored signing elements and combines pairs of the elements to produce a new session pair. The combination of the elements is performed partly on the card and partly on the associated transaction device so that the exchange of information between card and device does not disclose the identity of the signing elements. The signing elements are selected in a deterministic but unpredictable manner so that each pair of elements is used once. Further signing pairs are generated by implementing the signing over an anomalous elliptic curve encryption scheme and applying a Frobenius Operator to the normal basis representation of one of the elements.
Patent CA-2206702-C (CA)
Inventor: URBANEK OTTO
IPC: B29C48/58
Filed: 1996-10-03
Granted: 2001-05-01
Abstract: L'invention a pour objet un procédé de production d'un revêtement à la surface de vis de plastification pour presses d'injection. Sur la vis constituée par un matériau de base en acier, on applique un matériau métallique, métallique dur ou céramique, à faible distorsion, par projection à la flamme à grande vitesse. Lors du processus de revêtement, un jet frappe les différentes zones de la surface du matériau de base de la vis (1), partiellement indépendamment les unes des autres, à savoir, la partie supérieure (3) et les flancs (4) des nervures, ainsi que la base (5) de la vis.
Patent CA-2207431-C (CA)
Title: Desethaniseur a reflux rectifie
Inventor: NAZAR BEHZAD
IPC: F25J3/02
Filed: 1996-10-23
Granted: 2007-06-05
Abstract: La présente invention constitue un perfectionnement des étapes combinées de fractionnement de la déséthanisation et du passage en colonne de séparation C2 destinées à la séparation de l'éthylène et de l'éthane. On ajoute des étages théoriques (C200A) à la section de rectification d'un déséthaniseur au-dessus d'un dispositif de soutirage latéral (202) de liquide ou vapeur. Conformément à la présente invention, on obtient, dans un courant de tête, un produit éthylénique de qualité polymère comportant jusqu'à 30 % de l'éthylène présent dans l'alimentation du déséthaniseur. On parvient à une récupération moins importante à un même degré de pureté de l'éthylène ou à une récupération plus importante à un degré de pureté inférieur de l'éthylène en faisant varier le niveau de récupération ou le nombre d'étages supplémentaires dans la section de rectification. La mise en oeuvre de cette invention permet de parvenir à une réduction globale du nombre total d'unités auxiliaires froides destinées aux condenseurs de tête du déséthaniseur et de la colonne de séparation C2 située en aval.
Patent CA-2215585-C (CA)
Title: Practical synthesis of urea derivatives
Inventor: THAVONEKHAM BOUNKHAM
IPC: C07D207/08
Filed: 1997-09-16
Granted: 2004-04-20
Abstract: A very mild and efficient approach for the synthesis of ureas is described. Phenyl carbamates were used as intermediates for the preparation of N,N'- substituted ureas. The carbamates were treated with an approximate stoichiometric amount of amine in dimethyl sulfoxide at ambient temperature, generating the ureas in high yield.      The reaction was simple, safe, fast, inexpensive, and amenable to large scale production of the product.
Patent CA-2217351-C (CA)
Title: Composes de piperazinyle et de piperidinyle carbonyles inhibant la transferase de proteine farnesyle
Inventor: MALLAMS ALAN K
IPC: C07D405/12
Filed: 1996-04-03
Granted: 2003-03-18
Abstract: L'invention décrit de nouveaux composés de pipérazinyle et pipéridinyle carbonyles de formule (1.0) ou (1.1) ainsi que des compositions pharmaceutiques. L'invention décrit également un procédé d'inhibition de la fonction Ras et par conséquent l'inhibition de la croissance anormale des cellules. Le procédé consiste en l'administration du nouveau composé de pipérazinyle et pipéridinyle carbonyles à un système biologique. En particulier, le procédé inhibe la croissance anormale des cellules chez un mammifère tel que l'être humain. La présente invention décrit un composé de formules (1.0) et (1.1) ou un sel ou solvate pharmaceutiquement acceptable, dans lequel Z est un groupe de formule (i), (ii) ou (iii), dans laquelle X1 représente CH ou N; X2 peut être identique ou différent et peut représenter CH, N ou N-O; b vaut 0, 1, 2, 3, 4; n et nn représentent indépendamment 0, 1, 2, 3, 4 ou lorsque X2 représente CH, n et nn peuvent valoir 5; R20 et R21, R1, R2 et R3 sont tels que décrits dans la description.
Patent CA-2218106-C (CA)
Inventor: GIROUX RICHARD LEE
IPC: E21B21/10
Filed: 1996-04-26
Granted: 2005-06-14
Abstract: L'invention porte sur un bouchon de cimentation inférieur (594) muni d'un dispositif réversible de fixation à un bouchon de cimentation supérieur (584) par l'intermédiaire d'un manchon tubulaire (550) et de goupilles de cisaillement (553), ou d'un anneau de cisaillement éventuellement segmenté faisant partie intégrante du manchon. Le manchon tubulaire (550) comporte de premières ouvertures (565) recouvertes de plaques de rupture (570) permettant le passage du ciment après avoir placé le bouchon sur le sabot flottant à la base du tubage. Le manchon tubulaire (550) peut comporter de secondes ouvertures (565) recouvertes de plaques de rupture (555) permettant de procéder à la cimentation lorsque le bouchon supérieur a été lancé avec le bouchon inférieur. L'invention porte également sur un système de lancement de clapets dans lequel les clapets sont disposés dans un manchon coaxialement et à une certaine distance radiale de l'enceinte du dispositif de lancement. Un déviateur de fluide est placé au sommet du dispositif de lancement pour défléchir le fluide vers l'espace annulaire compris entre le manchon et l'enceinte de manière à empêcher les surpressions sur les pistons qui maintiennent les clapets en place avant leur lancement.
Patent CA-2224301-C (CA)
Inventor: TRUTZA GEORGE
IPC: A61B17/06
Filed: 1997-12-10
Granted: 2005-08-16
Abstract: A surgical suturing needle is disclosed for use in limited space applications as well as a method for its use. The needle has an arcuate body and a relatively straight shank extending therefrom. The shank and arcuate body form an abrupt angle therebetween. The surgical suturing needle has a pointed tip on one end of the arcuate body and suture attachment structure formed in the shank. The method of using the surgical needle to join a pair of vascular tissue sections together includes penetrating into a lumen of a first vascular tissue section, advancing the pointed tip into the lumen of a second vascular tissue section and out through a side wall thereof, grasping the pointed tip and drawing the needle substantially parallel to an outer surface of the second vascular tissue section to thereby move the surgical suturing needle and an attached length of suture material through the first and second vascular tissue sections.
Patent CA-2234952-C (CA)
Inventor: GREENE BOYD
IPC: B01D19/00
Filed: 1996-10-18
Granted: 2005-12-27
Abstract: Hydrocyclone (2) destiné à séparer un flux d'entrée à phase combinée, qui possède deux éléments (10, 12) emboîtés, tronconiques, à amincissement vers le bas et séparés par un espace annulaire (14). Un orifice d'entrée (8) tangentiel conduit à l'espace annulaire (14) séparant les cônes (10, 12). Dans d'autres modes de réalisation applicables à un dispositif hydrocyclone composé de coques cylindriques ou coniques emboîtées formant un espace cyclonique annulaire, des passages (39, 41) sont situés sur l'une des deux coques (10, 12) pour effectuer une purge intermédiaire d'une fraction du flux. De plus, un tube (16) hélicoïdal creux est avantageusement placé dans l'espace annulaire (14) pour optimiser le modèle de flux. Des orifices d'accès (50) peuvent être ménagés dans le tube creux (16) pour enlever une fraction de gaz s'écoulant à contre-courant.
Patent CA-2235390-C (CA)
Title: Laminated product for use in footwear manufacturing
Inventor: SCHEUBEL GERARD
IPC: B32B5/26
Filed: 1996-11-01
Granted: 2000-10-17
Abstract: The laminated insole (2) for a footwear comprises an upper layer made of a resilient foam material (4) and having an outline (6) shaped for incorporation in the footwear, and a bottom layer made of fibrous mat (10) and having a shape conforming with the outline (6) of the upper layer (4). The fibrous mat (10) comprises a multiplicity of fibers (12), a fraction of which penetrates the foam material of the upper layer (4) for bonding the bottom layer (10) to the upper layer (4), and a stiff portion (14) for providing stiffness to the insole (2). Preferably, each of the fibers (12) of the fraction penetrating the foam material (4) emerges from the outer surface (16) thereof and thereby provides a pilosity (17) thereon. The laminated product (2) is suitable for use as an insole as well as a slip-in insole in any footwear. It takes advantage of the resilient properties of the foam, the stiffness and thermoformability of the fibrous mat and the comfort provided by the pilosity covering the upper layer of foam.
Patent CA-2237811-C (CA)
Title: Dispositif d'osteosynthese
Inventor: HATEBUR ALEXANDER
IPC: A61B17/70
Filed: 1995-11-30
Granted: 2003-09-02
Abstract: L'invention concerne un dispositif d'ostéosynthèse (20; 30) comportant un bloc (1) et une plaque d'ostéosynthèse (2) qui lui est reliée et présente une surface d'ostéocontact (3) et au moins un trou (4) traversant ladite plaque (2) afin de loger un moyen d'ostéosynthèse. Le bloc (1) comprend un premier canal de guidage (5) et un deuxième canal de guidage (6) qui reçoivent respectivement un support longitudinal, les deux canaux de guidage (5, 6) étant parallèles l'un à l'autre et leurs axes (7, 8) se situant dans un plan parallèle à la surface d'ostéocontact (3). Le cylindre circulaire (9) défini par le premier canal de guidage (5) ne coupe pas les cylindres circulaires (10) définis chacun par les trous (4) de la plaque, tandis que le cylindre circulaire (11) défini par le deuxième canal de guidage (6) coupe les cylindres circulaires (10) définis chacun par les trous (4) de la plaque.
Patent CA-2242813-C (CA)
Inventor: BROWN J BRECK
IPC: A63F1/00
Filed: 1997-01-10
Granted: 2005-08-30
Abstract: A game is disclosed for combining the play of blackjack and the play of crap s based upon two dice each having six faces numbered one to six. The board (12) presents a semicircular playing arena (14) with a dealer playing area adjacent the straight diameter (16) of the semicircular playing arena and a plurality of player areas (18). Each of the player areas includes a plurality of craps wager indicator circles (20, 22, 24). After the wagers are settled based upon the play of the cards in accordance with the rules of blackjack, each player who has a blackjack is offered the roll of the dice and a craps wager. The remaining players may also place bets on one of their respective craps wager circles (20, 22, 24). Each craps wager is then settled based on the outcome of a roll of the dice by the player having the blackjack. The subject invention is characterized by interleaving an accumulating pot which is supported by each player placing a pot wager on one of the three wager indicator circles prior to the cards being dealt. A register (34) keeps track of these initial pot wagers. A player qualifies to roll the dice for a portion of the pot by having a predetermined blackjac k, such as the Ace and Jack of one suit or different suits.
Patent CA-2245284-C (CA)
Inventor: KURTZ ERIC J
IPC: A47C7/44
Filed: 1998-08-10
Granted: 2002-06-18
Abstract: A chair has a control mechanism configured to limit the angle of tilt of the chair back rest relative to the seat. The control mechanism includes a bracket member configured to be supported on a vertical column of a chair base. A rotational member attachable to the chair back rest is supported for rotation on an end of the bracket member. A generally elongated stop member is secured to the tubular member at a position extending inwardly of the end of the bracket member. A slide member extends along the longitudinal axis of the bracket member and has one end provided with at least one downwardly directed inclined edge. The stop member has a free distal end configured to engage the inclined edge and limit rotation of the tubular member. By this arrangement, the chair user can adjust the degree of rearward tilt of the back rest by selected movement of the slide member longitudinally of the bracket member.
Patent CA-2245303-C (CA)
Title: Method and apparatus for automatic compensation of first-order polarization mode dispersion (pwd)
Inventor: FISHMAN DANIEL A
IPC: H04B10/18
Filed: 1998-08-19
Granted: 2002-12-10
Abstract: The effect of polarization mode dispersion that an optical signal experiences as it propagates through an optical transmission fiber is compensated for at a receiver using a birefringent compensator, in which the compensator automatically and adaptively generates a level of differential time delay that substantially equals the differential time delay that the optical signal experiences, but of different sign, and, therefore, essentially cancels out the undesired delay.
Patent CA-2254526-C (CA)
Title: Auto tensioner
Inventor: YAMAKAWA TADASU
IPC: F16H7/12
Filed: 1998-11-26
Granted: 2003-08-05
Abstract: An auto tensioner includes a support shaft whose one end is fixed to a target-attaching object and which has an arm support portion, an arm whose one end is rotatably supported by the arm support portion and which has a pulley support portion projecting forwardly and axially beyond the top end of the support shaft, a tension pulley which is rotatably supported by the pulley support portion of the arm and arranged at a position offset from the support shaft, and a friction plate arranged between one end of the arm and the arm support portion of the support shaft and adapted to apply a rotary resistance to the arm.  The friction plate is further provided with a load bearing member in the zone where a load resulting from the offset arrangement of the tension pulley is applied, so that the zone of the friction plate has a sufficient degree of load-resistance.
Patent CA-2261079-C (CA)
Inventor: SURMAN DAVID
IPC: F17C13/06
Filed: 1999-02-01
Granted: 2008-09-09
Abstract: A needleless syringe 1 comprises a hollow body 2 open at a distal end to define an outlet 4. A first compartment 6 in the body 2 contains a capsule 8 in which is stored fluid eg. helium under pressure and a second compartment 10 located between the first compartment 6 and the outlet 4 contains a therapeutic agent. The capsule 8 faces away from the outlet 4 such that the flow of fluid, when the capsule 8 is ruptured, will initially be in a direction away from the outlet and latterly through a channel 27 between the capsule 8 and the inside surface of the hollow body in a direction towards the second compartment 10 and the outlet 4.
Patent CA-2261722-C (CA)
Inventor: SHENTON SIMON PHILIP
IPC: A46B5/00
Filed: 1997-08-01
Granted: 2003-05-20
Abstract: A toothbrush having a handle (4) and a head (1), the head (1) being of length L and having longitudinal and transverse axes, the head (1) having a bristle-bearing surface (7) with a plurality of tufts (6) extending therefrom, wherein the tufts (6) are arranged in a plurality of groups N, which are separated from each other by a transverse gap (8) of from 1.3 mm to 5 mm, the distance between tufts (6) within a group being less than 1.3 mm, and wherein at least 50 % of the tufts (6) are characterized by there being no other tuft (6) within 1.3 mm, measured along a line parallel to the transverse axis, for at least 50 % of the width of the tuft (6). Preferably, each group is in the form of a crescent shaped array and tufts (6) are generally perpendicular to the toothbrush head (1). The arrangement allows for independent movement of bristle tufts (6), particularly whilst using the Bass technique for toothbrushing, yet maintains a high density of tufts (6) on the toothbrush head (1).