baber/WOPTO huggingface dataset:
Patent CA-2238969-A1 (CA)
Title: Method and apparatus of producing belts with precise cord length and tension
Inventor: WOOD DOUGLAS BRUCE
IPC: B29D29/08
Filed: 1996-10-03
Abstract: A method and apparatus for accurately applying a cord (12) to a rotatable mandrel (14) utilizes control of cord length, rather than cord tension, as the control parameter. The apparatus includes a mandrel (14) with an inflatable diaphragm (54) mounted on an outer surface of the mandrel (14). The diaphragm (54) is selectively inflatable via a control valve (58) and source of pressurized fluid for dynamically adjusting a circumference of the mandrel (14) in response to a control input. The control input reads a tension in the cord (12) being wound. The cord (12) is positively fed to the mandrel (14) according to a defined algorithm based on the mandrel's shape, circumference and rotational speed, rather than by demand feed of the cord (12). The apparatus includes a positive feed control capstan (18) which is electronically geared. The apparatus further includes a cord-laying wheel (30) which isolates radially directed forces from circumferentially-directed forces. A second embodiment of the invention includes the belt being rotated on first and second pulleys (14A, 14B) while the cord (12) is applied. A center distance between the first and second pulleys (14A, 14B) is selectively adjustable to control cord tension in the cord (12).
Patent CA-2239387-A1 (CA)
Inventor: WU ARTHUR
IPC: B25G1/00
Filed: 1998-06-22
Abstract: A tool which includes a handle having a driving head secured to one end and having one or more engaging holes formed in the handle for the purposes of engaging with fasteners, or for engaging with tool bits or for engaging with tool extensions for increasing or decreasing torque. The engaging holes may also be used for decreasing the weight of the tool handle. The said tool handle may have a fixed driving head or may be an adjustable driving head.
Patent CA-2239409-A1 (CA)
Title: Utilisation d'agents fongicides pour la decontamination selective de dents et de protheses dentaires
Inventor: POOTH RAINER
IPC: A61P1/02
Filed: 1996-11-21
Abstract: Le composé de la formule (I) est adapté à la destruction des champignons ou levures se developpant sur les dents ou prothèses, notamment à la décontamination à l'extérieur de la zone buccale.
Patent CA-2243548-A1 (CA)
Title: Procede et appareil pour enlever des matieres particulaires d'un gaz
Inventor: HOSKINSON GORDON H
IPC: F23G5/027
Filed: 1996-10-09
Abstract: L'invention concerne un épurateur (9) à utiliser dans un système d'incinération pour enlever les matières particulaires et assurer une combustion complète des gaz de combustion. L'épurateur (9) comporte une chambre d'épuration (8) ayant une entrée par laquelle les gaz de combustion chauds sont introduits et une sortie pour l'évacuation des gaz. Une pluralité de plaques allongées (18) sont suspendues dans la chambre d'épuration (8). Ces plaques sont faites d'un métal résistant à la chaleur, tel que l'alliage Inconel, et sont disposées suivant un motif donnant une trajectoire tortueuse aux gaz de combustion traversant la chambre (8) et elles empêchent un passage direct de l'entrée à la sortie. Dans une forme d'exécution préférée de l'invention, les plaques (18) sont disposées en rangées et les espacements entre les plaques (18) dans une rangée sont alignés avec les plaques d'une rangée adjacente. A mesure que les gaz de combustion circulent dans la chambre (8), les matières particulaires migrent et sont recueillies sur les surfaces avant et arrière des plaques. Durant les périodes d'utilisation intermittente, les plaques vont se dilater et se contracter, ce qui a pour effet de faire tomber de celles-ci les matières particulaires, dans un récipient collecteur (25). L'agencement des plaques favorise également le mélange de l'air avec les gaz de combustion, pour favoriser une combustion complète des matières combustibles.
Patent CA-2246213-A1 (CA)
Inventor: FRIEDRICH JAROMIR
IPC: F16L55/103
Filed: 1998-08-31
Abstract: An ice plug for defining a barrier in a pipeline section filled with water, comprises a hollow, cylindrical body enclosed at a front end and provided with guide means for sliding movement of the plug along and within the pipeline. The body has a diameter smaller than that of the pipeline to define with the latter an annular interspace enclosed at opposed axial ends of the plug. The thickness of the annular space is selected to allow free movement of the body through curves in a pipeline and to form a continuous, annular ice layer firmly engaging the inside wall of the pipeline and the outer surface of said body to thus form, together with the body, a temporary water impermeable barrier within the pipeline. A water supply system fills said interspace with process water.
Patent CA-2249109-A1 (CA)
Inventor: THERRIEN WILLIAM NELSON
IPC: B25H1/06
Filed: 1998-10-13
Abstract: A portable device for supporting materials and securing scaffolding to, comprises of wood members fastened together with metal gang nail type plates, commonly used in roof truss manufacturing, to form panels. Two panels of equal size form the ends of the device, while two larger panels of equal size form the sides of the device. The panels are assembled at right angles to each other and fastened together. One wood member is attached by fasteners, to the top of the assembled panels to form a strong flat surface. The present invention provides an economical, lightweight, durable and exceptionally strong device to support and secure scaffolding to.
Patent CA-2250552-A1 (CA)
Title: Scum removal system for sewage clarification tank
Inventor: HANFORD ROBERT E
IPC: B01D17/02
Filed: 1998-10-16
Abstract: A scum removal system for a sewage treatment or clarification tank having a feedwell or skimmer flight includes a scum trough disposed within the settling tank. A floating weir is disposed proximate to the scum trough. A membrane or sheet is partially wrapped or wound about the weir, at least one cable being connected to the membrane for pulling the membrane and concomitantly lowering the weir entrained therewith to permit surface scum to enter the trough from the settling tank. A mechanism for exerting increased tension on the cable to thereby lower the weir below the surface of the liquid in the clarification tank includes a camming lever or arm and an actuator. The lever is connected to the cable, while the actuator is mounted to the feedwell or a skimmer wiper arm so as to engage the camming lever and pivot the actuator lever about an axis. The pivoting of the actuator lever increases tension on the cable and causes the cable to pull the floating weir down in opposition to buoyancy forces tending to drive the weir upwards.
Patent CA-2252739-A1 (CA)
Title: Opto-acoustic thrombolysis
Inventor: MATTHEWS DENNIS
IPC: A61B17/00
Filed: 1997-04-23
Abstract: This invention is a catheter-based device for generating an ultrasound excitation in biological tissue. Pulsed laser light is guided through an optical fiber (10) to provide the energy for producing the acoustic vibrations. The optical energy is deposited in a water-based absorbing fluid, e.g. saline, thrombolytic agent, blood or thrombus, and generates an acoustic impulse in the fluid through thermoelastic and/or thermodynamic mechanisms. By pulsing the laser at a repetition rate (which may vary from 10 Hz to 100 kHz) an ultrasonic radiation field can be established locally in the medium. This method of producing ultrasonic vibrations can be used in vivo for the treatment of stroke-related conditions in humans, particularly for dissolving thrombus or treating vaspasm. The catheter (14) can also incorporate thrombolytic drug treatments as an adjunct therapy and it can be operated in conjunction with ultrasonic detection equipment for imaging and feedback control and with optical sensors for characterization of thrombus type and consistency.
Patent CA-2253129-A1 (CA)
Inventor: RUANO ARAMBURU LUIS ANGEL
IPC: E05B9/08
Filed: 1998-11-06
Abstract: Combination cylinder that can be extracted from the outside for a latch, characterized in that support (4) of cylinder (3) has a radial catch piece (6) that can be retracted relative to a radial slot (7) of the internal wall of the static body (5) attached to the door, and there is a transverse lift-bar (8), a counter-spring push-button (9) and one each first (10) and second (11) openings attached in permanent axial alignment with said push-button (9); said lift-bar (8) has a first arm (8a) joined in an articulating manner with said retractable catch piece (6), a second arm (8b) with one end that can interfere with the rotary path of radial projection (13) present in cylinder (3).
Patent CA-2253221-A1 (CA)
Inventor: BERNARDON JEAN-MICHEL
IPC: C07C233/63
Filed: 1998-02-09
Abstract: The invention concerns novel bi-aromatic compounds of formula (I) and the use thereof in pharmaceutical compositions for human or veterinary medicinal use (in particular dermatological, rheumatic, respiratory, cardiovascular and ophthalmologic disorders), or in cosmetic compositions.
Patent CA-2255096-A1 (CA)
Title: Tiebar structure for injection molding machine
Inventor: ING RONALD
IPC: B29C45/67
Filed: 1998-12-02
Abstract: Construction includes a stationary platen and a movable platen movable with respect to the stationary platen from a closed position in clamping engagement with the stationary platen to an open position spaced from the stationary platen. At least two tiebars are provided connecting the stationary platen to the movable platen, and a stroke cylinder within each tiebar operative to move the platens from an open to closed position and from a closed to open position. Clamping means are provided to clamp the platens together in the closed position, and including means carried by the tiebars to engage the clamping means.
Patent CA-2257037-A1 (CA)
Inventor: FRANKE RALPH A
IPC: D01D5/11
Filed: 1997-06-25
Abstract: A flash spin pack (20) for a flash-spinning apparatus (26) is provided in which the pack includes a spin mixture inlet that communicates with a spin mixture passage that discharges through a spinning orifice (36) that opens into a slot (24) defined by two opposing faces of the body of the spin pack (20). The slot (24) is 0.25 mm to 7 mm wide proximate the spinning orifice (36) outlet, 0.25 mm to 10 mm at the slot outlet, and the distance from the orifice outlet is 1.5 mm to 40 mm. The spin pack (20) may have five or more spinning orifices (36) that each discharge into a different slot (24) so configured.
Patent CA-2257740-A1 (CA)
Title: Method and apparatus of column redundancy for non-volatile analog and multilevel memory integrated circuits
Inventor: VAN TRAN HIEU
IPC: G11C27/00
Filed: 1999-01-06
Abstract: This invention provides column redundancy circuits in a storage array, which circuits are used in a non-volatile memory chip to increase the production yield due to manufacturing defects. The invention includes a scheme to latch and transfer the redundancy information, a redundancy logic circuit, a redundancy column driver, an array architecture with column redundancy, a scheme to program and read the column redundancy memory cells, a scheme to multiplex the fuses, and circuits to use an out-of-bound address as a column redundancy enable/disable signal.
Patent CA-2258349-A1 (CA)
Inventor: WEINHOLT DAN
IPC: H04L27/00
Filed: 1997-06-27
Abstract: A device and a method for deviation detection for use during transfer of a phase shift modulated information-carrying signal between a transmitter and a receiver. The deviation detector makes use of the presence of phase-linear segments, i.e. parts of sequences of phase changes with consecutively the same phase change. The deviation detector extracts segments consisting of three or more consecutive phase changes with determined same phase change. An identification of the filtered-out segments is performed in order to determine which nominal phase-linear sequences the segments belong to. After this, the deviation and possibly a correction signal can be calculated.
Patent CA-2258543-A1 (CA)
Title: Method and arrangement for tensioning dental floss, and a device for cleaning teeth
Inventor: LILLBACKA ANTTI
IPC: A61C15/04
Filed: 1997-06-16
Abstract: The present invention relates to a method and arrangement for tensioning dental floss, and to a device for cleaning teeth. Such an inventive device comprises a handle (2) constituting the device body (1), and finger-like floss holders (6, 7), as well as a cavity (3) formed for the floss within the body, whereby the floss extends from the cavity within the body to between the floss holders. With the method according to the invention, it is made sure that the floss is tensioned correctly and that it maintains its tension and will not be damaged between the floss holders (6, 7). In the floss holding device, a tensioning means (16) is arranged, and with a relative movement thereof in relation to the device body (1), the floss (5) is guided, locked and tensioned to its operative position. The invention provides a hygienic and easy to use device for cleaning teeth.
Patent CA-2259815-A1 (CA)
Title: Self aligning drive nut bracket
Inventor: OAKLEY ROBERT L
IPC: F16H25/24
Filed: 1999-01-19
Abstract: The invention provides a drive nut bracket for attaching a drive nut to a driven component to move the driven component.      The drive nut is moved by a rotating drive screw. The drive nut bracket provides rotational constraint and linear constraint of the drive nut. It has a nut engaging portion pivotally connected to the base. The nut engaging portion has at least one slide surface portion for sliding engagement with the nut so that the nut may slide relative to the nut engaging portion in a direction substantially perpendicular to the pivot axis. The pivot and the slide surface accommodate misalignments of the drive screw and the driven component. The nut engaging portion includes at least one drive force receiving surface portion facing generally along the axis of the drive screw to provide the linear constraint of the drive nut relative to the driven component.
Patent CA-2261548-A1 (CA)
Inventor: ALLPRESS STEPHEN ALAN
IPC: H04J3/16
Filed: 1999-02-09
Abstract: A time division multiple access communication system is disclosed, in which down link data are transmitted over a data channel in repeated time frames each containing a plurality of time slots. Down link set up information is transmitted over a control channel to indicate from which time slot a user terminal should extract data. Each frame on the data channel includes a user packet flag to indicate whether or not each time slot in the frame contains data.      Each user terminal is responsive to the set up information and to the user packet flags to extract data from its assigned time slot in those frames which the slot is indicated to contain data.
Patent CA-2264722-A1 (CA)
Title: Procede de production d'argile traitee au silane, argile traitee au silane et composition contenant ce type d'argile
Inventor: FREEMAN GARY M
IPC: C09C1/42
Filed: 1997-08-29
Abstract: Cette invention se rapporte à un procédé efficace de fabrication d'argiles traitées au silane et dotées d'effets renforçateurs exceptionnels en comparaison du caoutchouc, ainsi qu'à des compositions contenant de telles argiles traitées au silane. Ledit procédé de fabrication d'argile traitée au silane consiste à disperser préalablement ou à émulsionner un silane fonctionnel dans de l'eau en utilisant un agent tensioactif de manière à mélanger ledit silane fonctionnel avec du kaolin et à traiter uniformément en surface le kaolin avec ledit silane fonctionnel. De préférence, le tensioactif est un tensioactif non ionique possédant un rapport hydrophile-lipophile compris entre 8 et 18. L'argile traitée au silane, que l'on obtient en traitant en surface du kaolin avec ces silanes fonctionnels, présente de manière caractéristique, de faibles teneurs résiduelles en tensioactifs non ioniques. Les silanes fonctionnels utilisés peuvent être des silanes fonctionnels vinyliques ou sulfurés. Ces argiles traitées au silane s'avèrent utiles en tant que charges ou allonges dans les compositions de caoutchouc, et notamment dans celles incorporant de la silice et/ou du noir de carbone.
Patent CA-2266247-A1 (CA)
Inventor: COOTE ALEXANDER HARCUS
IPC: B05B1/02
Filed: 1999-03-22
Abstract: In the conventional, typical oscillating, lawn or hose, sprinkler it is known to have a spray tube, having one row of uniform holes or nozzles, which oscillates back and forth in a "to and fro" motion. Water emitted through these holes or nozzles, form a spray of jets of uniform trajectory which form a single line where the jets fall on the ground. At the end of the stroke, where the "to and froth motion is halted temporarily, this gives rise to an undesirable concentration of water, known as "puddling." In this invention the positioning of the nozzles on the spray tube in a unique arrangement is used. This consists of using 1 row of nozzles of more than 1 size or type, or set at an angle of deviation from the vertical in the spray tube, or more than 1 row of nozzles with 1 or more nozzle sizes or types.    With the use of this arrangement, varying trajectories are obtained, so the point of contact, where the jets hit the ground at the end of each stroke, is not in a single line, but is spread over a greater area. This distribution of the water, sprayed over a larger area, overcomes the unwanted so called, "puddling" effect.      In the past, many attempts have been made to overcome this "puddling" effect. They have all been focused on mechanical designs to overcome the "top dead center" phenomenon, the pause at the end of the stroke, in the translation of rotary to reciprocating motion. These have given rise to numerous inventions, based on mechanical arrangements but my invention is the first, to my knowledge, to overcome the problem by changing the focus of attack from purely a mechanical one, to one of arrangement of the nozzles and hence the water spray pattern.
Patent CA-2267142-A1 (CA)
Inventor: COENEN JOSEPH DANIEL
IPC: A61F13/15
Filed: 1997-10-31
Abstract: La présente invention concerne un procédé et un dispositif de calage contrôlé de deux couches de matériau (54, 66) continuellement en mouvement. Une pluralité de composants est déposée sur une première couche continuellement en mouvement. Une seconde couche (66) continuellement en mouvement est pourvue d'une pluralité de marques de référence correspondant chacune à l'un des composants de la pluralité de composants. Le procédé et le dispositif permettent de régler à une distance sélectionnée la distance entre les différentes marques de référence de la seconde couche, et de faire un calage contrôlé de chacune des marques de référence de la seconde couche par rapport à un composant correspondant de la première couche continuellement en mouvement.
Patent CA-2268156-A1 (CA)
Title: Bioceramic compositions
Inventor: TOFIGHI ALIASSGHAR
IPC: A61L27/58
Filed: 1997-10-16
Abstract: The present invention provides a synthetic, poorly crystalline apatite (PCA) calcium phosphate containing a biologically active agent and/or cells (preferably tissue-forming or tissue-degrading cells). The compositions provided by the present invention are useful for a variety of in vivo and in vitro applications, including drug delivery (for example, to bony sites, the central nervous system, intramuscular sites, subcutaneous sites, interperitoneal sites, and occular sites) tissue growth (preferably bone or cartilage) osseous augmentation, and methods of diagnosing disease states by assaying tissue forming potential of cells isolated from a host. The invention also provides methods of preparing delivery vehicles, of altering delivery vehicle characteristics, and of delivering biologically active agents to a site. The invention further provides in vitro cell culture systems and cell encapsulation materials. the invention is useful for both medical and veterinary applications.
Patent CA-2268802-A1 (CA)
Inventor: HUART MICHELE
IPC: A47G9/02
Filed: 1997-10-20
Abstract: The invention concerns bedding elements, in particular a slip cover (200) for a bedding element for receiving at least one quilt comprising a first main piece of cloth and a second main piece of cloth mutually assembled by their side edges, which is reversible and comprises at least one supporting device (500) having the shape of a rectangular parallelepiped open on one of its faces, and capable of matching the shape of a mattress (1).
Patent CA-2269735-A1 (CA)
Inventor: ZAETZ INNA ISAAKOVNA
IPC: C22C32/00
Filed: 1997-10-23
Abstract: A method for diffusion coating workpieces of ferrous base metals such as carbon steel and cast iron includes the step of weighing and mixing the following components, in powdered form: Chromium 40-50 wt.%, Ferrochromium 25-37 wt.%, Tantalum Carbide 0.40-0.65 wt.%, Vanadium 0.35-0.70 wt.%, Ammonium Halide 4-5 wt.%, Aluminum Oxide remainder. The workpieces are preferably degreased and then placed in a container with the mixed components. The container is sealed and heated to a temperature of 1000-1050 ~C. The workpieces and the composition are kept at that temperature for a predetermined period, on the order of forty-five minutes or longer, to permit a surface layer of desired thickness to form. The container is then cooled in a conventional cooling chamber and the workpieces are removed. The method produces coatings having good wear and corrosion resistance.
Patent CA-2270633-A1 (CA)
Inventor: YU CHANGJUN
IPC: C12Q1/68
Filed: 1997-11-05
Abstract: The invention relates to nucleic acids covalently coupled to electrodes via conductive oligomers. More particularly, the invention is directed to the siteselective modification of nucleic acids with electron transfer moieties and electrodes to produce a new class of biomaterials, and to methods of making and using them.
Patent CA-2272520-A1 (CA)
Inventor: HATHERLEY PETER GRAHAM
IPC: C23C10/02
Filed: 1999-05-21
Abstract: A method for forming an article comprises the steps of providing a metallic substrate, applying a layer of copper or copper-based alloy to the metallic substrate and then diffusing aluminium into the copper or copper-based alloy layer. The method may be used, for example, as a convenient and low cost alternative to existing techniques for the manufacture of coins having an aesthetically pleasing and highly durable "aluminium bronze" finish.
Patent CA-2274814-A1 (CA)
Title: Digital network interface for analog fax equipment
Inventor: JOHN JOHNNY K
IPC: H04W4/18
Filed: 1997-12-05
Abstract: A novel and improved method and apparatus for providing an interface to a digital wireless telephone system compatible with standard analog wire line fax machines are described. To process a fax, a source interface (24a) waits until an interface to a destination fax machine (18b) has been established before establishing an interface to a source fax machine (18a). The source fax transmission rate must be less than or equal to the destination fax transmission rate and the data rate of the digital channel. To establish the source fax interface at the proper rate, the source interface (24a) first selects an initial data rate from a set of standard fax transmission rates. The source interface (24a) sends unacceptable rate (failure to train) messages to the source fax machine (18a) until the source fax transmission rate is less than or equal to the data channel rate and the destination fax transmission rate. During fax processing, the destination interface (24b) inserts nonprinting data (fill bits) if the destination fax transmission rate is greater than the source fax transmission rate. Fill bits are also inserted to compensate for transmission delays.