baber/WOPTO huggingface dataset:
Patent CA-2275813-A1 (CA)
Title: Stepped annular intermediate pressure chamber for axial compliance in a scroll compressor
Inventor: HALLER DAVID K
IPC: F04C2/344
Filed: 1999-06-21
Abstract: A scroll compressor having a suction pressure chamber into which fluid is received substantially at suction pressure and a discharge pressure chamber from which the fluid is discharged substantially at discharge pressure, including a first scroll member having a first involute wrap element projecting from a first substantially planar surface, a second scroll member having a second involute wrap element projecting from a second substantially planar surface, and third and fourth surfaces opposite the second substantially planar surface, the third and fourth surfaces respectively located in first and second planes which are spaced apart from each other and substantially parallel with the second substantially planar surface. The first and second scroll members are mutually engaged with the first involute wrap element projecting towards the second surface and the second involute wrap element projecting towards the first surface, the first surface positioned substantially parallel with the second surface whereby relative orbiting of the scroll members compresses fluids between the involute wrap elements. The engaged scroll members are in fluid communication with the suction and discharge chambers. A frame is provided having fifth and sixth surface located in different planes substantially parallel with the second substantially planar surface of the second scroll member, the fifth surface adjacent and opposed to the third surface of the second scroll member, and a sixth surface adjacent and opposed to the fourth surface of the second scroll member. A first seal is disposed between the third and fifth surfaces, the first seal in sliding engagement with one of the third and the fifth surfaces. A  second seal is disposed between the fourth and sixth surfaces, the second seal in sliding engagement with one of the fourth and the sixth surfaces. An intermediate pressure chamber is in part bounded by the third and fourth surfaces of the second scroll member, the fifth and sixth surfaces of the frame, and the first and second seals, and is in fluid communication with a source of pressure intermediate suction and discharge pressures, whereby the first and second scroll members are at least partially urged into axial sealing engagement by forces induced by fluid pressure in the intermediate pressure chamber.
Patent CA-2280020-A1 (CA)
Title: Apparatus for measuring characteristics of an optical fibre
Inventor: GALTAROSSA ANDREA
IPC: H04B10/2569
Filed: 1998-02-10
Abstract: Apparatus for measuring characteristics of an optical fiber (11), at different positions along the length of the optical fiber (11), which apparatus comprises: tuneable source means (2) for providing optical pulses of light (3) which have a variable wavelength and a narrow wavelength bandwidth; polarisation selecting coupler means (5) for conveying light between three separate ports (4, 6, 15), such that a state of polarisation of optical pulses of light (3) becomes a particular launch state of polarisation of light (7), and such that one or more particular receive states of polarisation of light (14) become or more separate channels of light (16); optical connector means (8) for making an optical connection between a bi-directional port (6) of the polarisation selecting coupler means (5) and one end (10) of the optical fibre (11); photodetector means (17) for converting the intensity of one or more separate channels of light (16) into one or more separate electrical signals; launch controller means (1);  receiver controller means (18); and processor means (19) for measuring and processing the electrical signals provided by the photodetector means (17) into measurements of the characteristics of the optical fibre (11).
Patent CA-2280627-A1 (CA)
Inventor: CORNETTA JOHN EDWARD
IPC: D01D10/02
Filed: 1999-08-17
Abstract: The present invention discloses and claims a novel process for the formation of high denier as-spun and heat-treated filaments of a thermotropic liquid crystalline polymer. Preferred embodiments include process for the formation of as-spun and heat treated monofilaments of a few wholly aromatic polyesters and polyesteramides.  The process involves (a) heating of a thermotropic liquid crystalline polymer to above its melting transition temperature; (b) passing said molten polymer through an extrusion chamber equipped with an extrusion capillary of an aspect ratio of greater than about 1 and less than about 15 to form a filament; and (c) winding the filament at a draw-down ratio of at least about 4. The filaments so formed are of at least 50 denier per filament (dpf) and feature essentially uniform molecular orientation across the cross-section. In a final optional step, the filaments are heat treated in stages to form filaments exhibiting excellent tensile properties. Both as-spun and heat-treated filaments feature remarkably good tensile properties retaining at least 80 to 90 percent of the properties expected of conventional low denier (5 to 10 dpf) filaments.
Patent CA-2283716-A1 (CA)
Title: Multiflavor streptavidin
Inventor: SMITH CASSANDRA
IPC: C07K14/36
Filed: 1998-03-13
Abstract: Compounds and methods are described for producing streptavidin mutants with changed affinities. In particular, modifications to the sequence of the natural streptavidin gene is described to create amino acid substitutions resulting in greater affinity for biotin subsitutes than for biotin.
Patent CA-2284947-A1 (CA)
Title: Apparatus and method for managing data storage
Inventor: FRADETTE ROBERT J
IPC: G06F3/06
Filed: 1999-10-04
Abstract: A data storage managing apparatus is described which translates a host Input/output (I/O) request into a standard form. Thus, I/O requests sent by different hosts using different protocols are treated in the same manner for accessing the data storage. The I/O request in the standard form is then normalized by adding a storage address. The normalized request is routed based on the storage address. Therefore, the present invention enables transparent communication between various types of hosts and various types of storage devices.
Patent CA-2287400-A1 (CA)
Inventor: ANDERSON DEWEY CHARLES
IPC: G06F17/30
Filed: 1998-04-09
Abstract: An index associated with a database is dynamically processed in an information retrieval system to create a set of questions for use when processing a data inquiry from a user. The index, a structured guide used when searching the database, has different information domains. After one of these domains is selected, a particular order of the index categories within the selected domain is determined, typically by referring to the order lookup table within the index. A script corresponds to the selected domain. Within the script, there are questions corresponding to each index category within the selected domain.  These questions are dynamically used to prompt the user. Only the questions corresponding to active index categories are arranged into the set of questions having a question set order corresponding to the particular order of the index categories. In an iterative process, the first question is identified and used to prompt the user to select a term from a scaled down vocabulary of terms (i.e., only those terms associated with the first question and corresponding first index category). Upon selecting the term, a search of the database is performed by the search engine module based upon the selected term. If there is too much information returned from the search, the next question is identified and the iterative process is repeated.
Patent CA-2291598-A1 (CA)
Title: Apparatus for dispensing particles
Inventor: WILSON ROBERT JOHN
IPC: A01C7/10
Filed: 1999-11-30
Abstract: An air seeder for planting agricultural crops includes: a storage tank for containing particles to be dispensed; a metering mechanism for transferring particles from the storage tank; an air distribution system for receiving particles from the metering mechanism, the air distribution system comprising a bank of tubes for transporting particles in a flow of air having a flow rate, and a damper mechanism at the bank of tubes for selective control of the flow rate within the bank of tubes; an air flow source for providing a flow of air to the bank of tubes; a particle velocity sensor located at each tube for providing a sensor output signal corresponding to a measured particle velocity; and a control mechanism operably connected to the sensors and to the damper mechanism for selective adjustment of the flow rate in the bank of tubes, the control mechanism being adapted to receive the sensor output signals, normalize the values corresponding to the sensor output signals, and display the normalized values.
Patent CA-2291957-A1 (CA)
Inventor: SUN DE-GUI
IPC: G02F1/065
Filed: 1999-12-06
Abstract: An optical waveguide switch using two symmetric intensity modulators is proposed in this invention. Each intensity modulator comprises two waveguide channels and a modulated grating coupler attached on one waveguide channel. The introduction of a modulated grating-coupler on one channel makes the coupling between two waveguides become unidirectional and the coupling efficiency can be achieved to be approximately 100% in theory. Furthermore, a high-efficiency intensity modulator is implemented. In this invention, two this-type intensity modulators are used to build 2x2 waveguide switches by setting appropriate separation between two modulators and interaction length. Because the intensity modulators used in this invention have high extinction-ratios, the optical waveguide switches based on this invention have high extinction ratios. When an optical signal is input into the first modulator, it can either pass through this modulator or be switched to the second modulator by controlling a modulated grating-coupling effect. In the same manner, this switching process can also be performed for the optical signal input into the second modulator. Therefore, an effective 2x2 switching performance can be implemented with this structure. Even the MxN switching performances can also be implemented with more than two this-type intensity modulators.
Patent CA-2292395-A1 (CA)
Title: Image processing device
Inventor: OZAWA MUNEAKI
IPC: A63F13/424
Filed: 1999-12-10
Abstract: An object is to provide an image processing device which can change the way of processing voice recognition results as the program progresses. A video game machine body 10 causes a television receiver 30 to display given images and to output given sounds in accordance with a game program stored in a ROM cartridge 20. When a player enters a voice from a microphone 60, a voice recognition unit 50 recognizes a word corresponding to the voice and sends the result to the video game machine body 10. The video game machine body 10 causes the state of a dialogue partner object displayed on the television receiver 30 to change on the basis of the recognized result received from the voice recognition unit 50. The relation between the recognition result and the control of the displayed dialogue partner object is changed as the program progresses, which gives variety to the game and makes it more amusing.
Patent CA-2293105-A1 (CA)
Title: Memorial plaque with removable marker block
Inventor: KRAWCZYK ANDREW
IPC: E04H13/00
Filed: 1999-12-23
Abstract: The invention provides a memorial plaque adapted for detachable mounting to a forward surface of a base, such as a cover slab of a crypt, a headstone or grave marker.   The plaque includes a marker block having an exposed face adapted to receive memorial indicia and a hollow back frame having a front wall with peripheral rearwardly extending side walls. The peripheral side walls have a back edge with profile mating the forward surface of the base thus defining a rearwardly open cavity between the base and front wall laterally bounded by the side walls. The close fitting of the frame protects the marker block from weather damage and vandalism. The marker block is releasably secured to the frame within the cavity with its exposed face adjacent a window in the front wall of the frame. Mounting brackets can be housed entirely within the cavity or hidden from view under removable ornaments to releasably mount the frame to the base. This enables the rapid removal of the blank marker block and replacement after memorial indicia have been applied.  Preferably the marker block is a stone slab with a polished exposed face that can be quickly marked with conventional sandblast methods. Alternatively, the blank marker block can be replaced with a previously completed block including any desired type of indicia. Mounting brackets for example can include a top bracket mounted adjacent an upper frame side wall, with a plate with connecting fasteners for securing the plate to the base. The plate may have an upper edge adapted to suspend the frame on the bracket. A locking device disposed on a lower frame side wall and on the lower end of the plate, releasably locks the plate and frame together. Optionally an externally mounted ornament can be secured to an outer surface of a wall of the frame with a fastener extending through said wall from the cavity, and for visual effect and secure mounting the outer surface of said wall includes a mating socket in which the ornament is disposed. Also optionally the plaque may include an auxiliary block having an exposed face adapted to receive memorial indicia, with the auxiliary block releasably secured to the frame within the cavity with its exposed face adjacent an auxiliary window in the front wall of the frame.
Patent CA-2293350-A1 (CA)
Title: Inhibition of the src kinase family pathway as a method of treating hbv infection and hepatocellular carcinoma
Inventor: SCHNEIDER ROBERT J
IPC: A61K48/00
Filed: 1998-06-12
Abstract: The present invention relates to therapeutic protocols and pharmaceutical compositions designed to target HBx mediated activation of Src kinase, members of the Src tyrosine kinase family and components of the Src kinase family signal transduction pathways for the treatment of HBV infection and related disorders and diseases, such as HCC. The invention further relates to pharmaceutical compositions for the treatment of HBV infection targeted to HBx and its essential activities required to sustain HBV replication. The invention is based, in part, on the Applicants' discovery that activation of Src kinase signaling cascades play a fundamental role in mammalian hepadnavirus replication. Applicants have demonstrated that HBx mediates activation of the Src family of kinases and that this activation is a critical function provided by HBx for mammalian hepadnavirus replication.
Patent CA-2293689-A1 (CA)
Inventor: TRAUWITZ JOHANNES
IPC: B01F13/10
Filed: 1998-04-23
Abstract: The invention relates to a device for continuous disintegration of a hardly wettable powdery material in a liquid. Said device is fitted with a feeding device for the powdery material and a dispersing device arranged downstream, wherein an injector serving as a preparation unit and which is impinged upon by a hydraulic fluid is connected between the feeding device and the dispersing device. The invention enables easy and continuous preparation and prevents agglutinations in the areas that come into contact with the powder while reliably ensuring wetting and disintegration of individual powder particles.
Patent CA-2294750-A1 (CA)
Inventor: BOUIX HERVE F
IPC: B65D47/34
Filed: 1999-05-06
Abstract: The present invention provides a dispensing system which assists in preventing the oxidation of a product (p) having an oxygen labile component. The system comprises a container (2) having an internal chamber (3) and a neck (4), said neck (4) providing access to the internal chamber (3) of the container, a pump (5) attached to the neck (4) of the container (2), said pump (5) projecting into the internal chamber (3); and a gas producing means (10) attached to the portion of the pump (5) projecting into the container (2). By one or more mechanisms, the gas producing means (10) gradually releases its gas, such as carbon dioxide, nitrogen, or any other gas that is substantially unreactive with the product's labile component. This released gas provides two advantages. First, the gas serves to keep the internal pressure of the system at a constant level. Second, the gas released is one which will not degrade labile components of the product. The ability of this dispensing system to at least partially fill the headspace of the package with a gas that does not readily degrade the labile component of the product, aids in slowing down the degradation of that product. Therefore, since oxygen is not allowed to fully occupy the headspace, the oxidation process is slowed.
Patent CA-2294778-A1 (CA)
Inventor: FINCK FRANCOIS
IPC: B60C11/24
Filed: 1998-06-26
Abstract: Pneumatique P doté d'une armature de carcasse radiale (1) et d'une armature de sommet (3) composée d'au moins deux nappes de sommet (31 et 32) d'éléments de renforcement inextensibles, de préférence métalliques, croisés d'une nappe à la suivante en faisant avec la direction circonférentielle un angle pouvant être compris entre 5~ et 45~, et radialement à l'extérieur d'une bande de roulement (8), caractérisé en ce que ladite bande de roulement (8), composée de mélanges de caoutchouc de couleurs différentes, est axialement formée d'au moins trois parties longitudinales, deux parties latérales (81) de mélange caoutchouteux d'une première couleur, et au moins, axialement entre les deux dites parties (81), une partie (80) de mélange caoutchouteux d'une deuxième couleur non noire, chaque extrémité axiale A, visible de l'extérieur, de la partie colorée avec la deuxième couleur étant distante de l'extrémité, située du même côté par rapport au plan équatorial, de la nappe (31, 32) la moins large axialement d'une quantité au moins égale à 30 mm.
Patent CA-2297720-A1 (CA)
Inventor: NICHOLSON RICHARD R
IPC: C04B16/04
Filed: 1998-08-13
Abstract: Disclosed is a method for providing an improved cementitious product (56) which includes improved surface characteristics such as skid resistance, as well as improved structural characteristics such as flexural toughness. The product (56) is provided by the inclusion of skid-resistant particles within an uncured cement product, such that the product eventually cures with the skid-resistant particles fixed at, and adjacent to, the surface, providing improved skid resistance to the cement product and its supporting surface, which could be a pedestrian sidewalk, steps (54), a vehicle roadway, handicapped ramps, or other surfaces where skid resistance is required. The product (56) is desirably softer in structure than traditional concrete structures to allow for desirable wearing by traffic thereon to continuously expose new rubber particles, while still having integral properties which discourage pullout of the particles.
Patent CA-2298850-A1 (CA)
Title: Mixed ionic conductor and device using the same
Inventor: TANIGUCHI NOBORU
IPC: H01M8/10
Filed: 2000-02-15
Abstract: A mixed ionic conductor with an ion conductive oxide has a perovskite structure of the formula Ba a(Ce1-b M1b)L c O3-.alpha. , wherein M1 is at least one trivalent rare earth element other than Ce;      L is at least one element selected from the group consisting of Zr, Ti, V, Nb, Cr, Mo, W, Fe, Co, Ni, Cu, Ag, Au, Pd, Pt, Bi, Sb, Sn, Pb and Ga; with 0.9 ~ a ~ 1; 0.16 ~ b ~ 0.26; 0.01 ~ c ~ 0.1; and (2 + b - 2a)/2~ .alpha. < 1.5.      Such a mixed ionic conductor has not only the necessary conductivity for electrochemical devices such as fuel cells, but also superior moisture resistance.
Patent CA-2299640-A1 (CA)
Title: Auxiliary tool for filling a bore with a mortar mass
Inventor: WOLFF OLIVER
IPC: B05C7/00
Filed: 2000-02-25
Abstract: An auxiliary tool for filling of an organic and/or inorganic mortar mass in a bore (B) and cooperating with an injection tool (D) connectable with a delivery tube (E) or a delivery hose, with the auxiliary tool including a filling member having an axial through-bore through which the motor mass (M) is injected into the bore (B), and an outer diameter selected so that a back flow of the mortar mass (M) in a direction toward a bore mouth is prevented, and an element for pinning the filling member on a free end of the delivery tube (E) or the delivery hose.
Patent CA-2305052-A1 (CA)
Title: Bioleaching sulfidic materials
Inventor: LINDSTROM BORJE
IPC: C22B3/18
Filed: 2000-04-12
Abstract: A method of leaching sulphidic material that contains metals and arsenic under oxidising conditions and with the aid of microorganisms is characterised by mixing the material with an acid aqueous solution to form a pulp, and in that the material is leached in a first leaching stage at a pH of below 2 and . at a temperature that ranges from room temperature to about 55°C in the presence of an active quantity of microorganisms of the mesophilic and/or moderately thermophilic type, wherewith the major part of the arsenic content of the material and possibly also part of its metal content is/are leached-out and the arsenic leached from said material is oxidised successively to a pentavalent state.  The remaining leachable metal content of the material is leached-out in a following leaching stage in the presence of an active quantity of an extremely thermophilic micro-organism and at a temperature within the active range of said micro-organism, said temperature being higher than the temperature in the first stage. The pH is suitably raised in the second stage to a level at which the pentavalent arsenic present in solution is caused to transform to a solid state and precipitate-out as a metal-containing arsenate which is separate from the leaching solution together with unleached material in the pulp after termination of the leaching process.
Patent CA-2305448-A1 (CA)
Title: Fiber optic rotary joint
Inventor: LEWIS NORRIS EARL
IPC: H04B10/2581
Filed: 1998-10-02
Abstract: Unidirectional and bi-directional fiber optic rotary joints are disclosed for coupling at least one optical signal across a rotary interface. The unidirectional joint (14) includes a stator (16) having a waveguide (22). A rotor (18) is rotatable through a full 360° revolution and is concentric to the stator. Light transmitters (70, 72, 74, 76) are positioned on a first circumference and connected to one of the stator and the rotor. Each of the transmitters emits an optical signal. Light receivers (100, 102, 104, ..., 120, 122) are positioned on a second circumference and connected to the other one of the stator and the rotor. Each of the transmitted optical signals is emitted tangentially into the waveguide and is reflected in short chordal lengths along the waveguide. Each optical signal is received by at least one of the second plurality of light receivers through the full 360° revolution of the rotor. The number of light receivers is greater than the number of light transmitters. Certain receivers do not receive an optical signal during a portion of the 360°  revolution of the rotor. Optical path lengths are matched to ensure propagation delays are avoided and the optical bit pulse widths are not broadened and not distorted. This is in part achieved by splitting the waveguide into reflective portions (32, 38, 46, 54) and areas of low level signals (34, 42, 50, 58) preferably a hollow waveguide is used.
Patent CA-2305498-A1 (CA)
Title: Dyeing composition for keratinous fibres with direct cationic colouring agent and a non-ionic surfactant
Inventor: LANG GERARD
IPC: A61K8/41
Filed: 1999-07-29
Abstract: The invention concerns a dyeing composition for keratinous fibres, in particular for human keratinous fibres such as hair, comprising, in a medium appropriate for dyeing, at least a direct cationic colouring agent of specific formula. The invention is characterised in that it further contains a non-ionic surfactant selected among the group consisting of alkylpolyglucosides, sugar or alkylsugar fatty acid esters, fatty sucramides, and their mixtures. The invention also concerns methods and devices using said composition.