baber/WOPTO huggingface dataset:
Patent CA-2208331-A1 (CA)
Title: Production of smooth surfaced oriented strand board panels
Inventor: CALVE LOUIS
IPC: B27N3/04
Filed: 1997-06-20
Abstract: Smooth surfaced panels e.g. of oriented strand board are prepared by producing a thin uniform mat of high density made from bonded wood particles, fibers or strands. The mat is produced passing it between a pair of rollers one of which is heated to produce a smooth cured surface on the corresponding side of the mat, and the other of which is unheated, the corresponding side of the mat containing uncured adhesive. The mat is subsequently bonded to a panel, e.g. an oriented strand board core under conditions of heat and pressure to produce a composite panel having a smooth surface.
Patent CA-2209094-A1 (CA)
Inventor: SMITH JEFFREY TODD
IPC: D07B1/06
Filed: 1997-06-25
Abstract: A strip of tire ply stock is reinforced with steel cords wherein the steel cords are constructed of high strength wire filament having at least a tensile strength of -2000 x D + 4400 MPa where D is the filament diameter in mm.  Tires are constructed with the ply stock in the belt and/or carcass.
Patent CA-2209834-A1 (CA)
Title: Rubber cylinder sleeve for offset web-fed rotary printing machines
Inventor: KNAUER PETER
IPC: B41N7/00
Filed: 1997-07-08
Abstract: A cylinder sleeve for an offset web-fed rotary printing machine comprising a carrier sleeve having a joint location and about which is arranged at least one compressible layer, also having a joint location. Another layer of non-expandable material may be used on top of or within the compressible layer. The non-expandable layer may also have a joint location. A seamless outer layer is provided and disposed about the compressible layer and the non-expandable layer, if so provided.
Patent CA-2211562-A1 (CA)
Title: De-warping apparatus for straightening a plate
Inventor: LIPINSKI JOSEPH
IPC: H01L21/48
Filed: 1993-10-06
Abstract: The present invention is a de-warping apparatus for straightening a plate which is bent such that a centre portion thereof is higher than outer portions thereof. The apparatus comprises a plurality of rollers forming a support surface wherein the centre most rollers are mounted lower than the outermost rollers; an axle mounted above the rollers; a plurality of disks mounted for rotation about the axle, wherein the centre most disks have a larger radius than the outermost disks; and means for advancing the plate between the rollers and disks, whereby a greater downward force is applied to the centre portion of the plate than to the outer portions for de-warping the plate.
Patent CA-2213218-A1 (CA)
Inventor: YIK HAYDN W C
IPC: G01L5/22
Filed: 1996-02-23
Abstract: An apparatus is provided for acquiring data relating to an amount of force required to move a manually movable member operatively associated with a motor vehicle through a predetermined range of movement. The apparatus comprises a movable assembly constructed and arranged to be able to engage the manually movable member through the predetermined range of movement of the manually movable member. A drive mechanism is constructed and arranged to drive the movable assembly so that the movable assembly applies a force to the manually movable member and moves the manually movable member through the predetermined range of movement so as to generally simulate a predetermined manual movement of the manually movable member.  Circuitry is operatively connected with the movable assembly for generating electrical signals indicative of the force applied to the manually movable member by the movable assembly during the predetermined simulated manual movement of the manually movable member through the predetermined range of movement. A data processing system is responsive to the electrical signals generated by the circuitry for generating data indicative of the force applied by the movable assembly to the manually movable member during the predetermined simulated manual movement of the manually movable member through the predetermined range of movement.
Patent CA-2214164-A1 (CA)
Title: Transmission clutch brake
Inventor: KRONSTADT VICTOR
IPC: F16D67/02
Filed: 1997-08-27
Abstract: A clutch brake is provided for a motor vehicle transmission clutch assembly having a brake disc within a rotatable transmission input shaft axially received within a central opening in the disc. The disc is connected to the input shaft for concurrent rotation therewith. The input shaft has a first end extending into a transmission housing member for connecting the input shaft to a transmission assembly, and an opposite second end extending into a clutch assembly for releasably connecting the input shaft to an adjacent engine crankshaft. A clutch housing member is connected to the clutch assembly which moves along the input shaft in an axial direction toward the transmission housing member during release of the clutch assembly from the input shaft. The brake disc is located along the input shaft between the transmission housing member and the clutch housing member. A clutch brake assembly is connected to the transmission housing member, the clutch brake assembly having a first caliper brake pad located on one rotational side of the disc and a second caliper brake pad located on an opposite rotational side of the disc. The first caliper brake pad is connected to an engagement member extending toward and being in engageable alignment with the clutch housing member. During movement of the clutch housing member toward the transmission housing member, the clutch housing member engages the engagement member of the first caliper brake pad so as to squeeze the disc between the first and second pads and thereby slow rotation of the disc.
Patent CA-2218556-A1 (CA)
Title: Container with integral handle, preform and method of manufacture
Inventor: BEALE GLENN ROBERT
IPC: B29L22/00
Filed: 1996-04-19
Abstract: A preform for a container comprised of orientable thermoplastic material and arranged so that the resultant blown container will include a handle or like support structure; the preform comprising a moulded structure having a neck portion and an expandable portion below the neck, the neck including a locating ring above the expandable portion and a solid stem of orientable thermoplastics material projecting from the locating ring and moulded integrally therewith which when the container is formed constitutes the handle. In a preferred embodiment, there are two non-expanding regions immediately below the locating ring, the first of which is raised or otherwise differentiated. A ribbed handle is attached to the locating ring and the non-expanding region.
Patent CA-2224697-A1 (CA)
Inventor: TIANG PENG
IPC: C07K14/14
Filed: 1996-06-14
Abstract: The rotavirus nonstructural glycoprotein, NSP4, performs multiple functions in the virus replication cycle, especially during viral morphogenesis.  Specifically, NSP4 is an intracellular receptor that mediates the acquisition of a transient membrane envelope during the budding of newly formed subviral particles into the endoplasmic reticulum (ER). We now report that NSP4 alone induces diarrhea in young (6-11 days) rodents (mice and rats) when administered by the intraperitoneal (IP) or intraileal (IL) route. A 22 amino acid synthetic peptide corresponding to NSP4 residues 114-135 (NSP4 114-135) also induces diarrheal disease. Disease induction by the protein or peptide is specific and is both age and dose-dependent, and it occurs in the absence of virus replication. No diarrhea was observed with control proteins or peptides administered to the same age animals and by the same route. Electrophysiologic data from intestinal mucosa indicate that NSP4 and the peptide stimulate a calcium-mediated rise in chloride secretion, i.e., potentiate chloride secretion by a calcium dependent signaling pathway. Based on these results, a new mechanism by which rotavirus induces diarrhea is proposed. This model involves two intestinal receptors. One receptor is needed to permit viral infection to be initiated, while a second age-dependent receptor is needed to interact with NSP4, a noncapsid viral protein, expressed and released from viral-infected cells. Induction of a signal transduction pathway following the interaction of NSP4 (a viral enterotoxin) with the second receptor leads to chloride secretion and diarrhea, i.e., diarrhea is induced when NSP4, acting as a viral enterotoxin, triggers a signal transduction pathway. The action of this viral enterotoxin with its specific receptor mimics that of bacterial enterotoxins.
Patent CA-2224756-A1 (CA)
Title: Optimization and recovery techniques in ima networks
Inventor: WHITE STUART C
IPC: H04L45/243
Filed: 1997-12-12
Abstract: In ATM networks, digital data in ATM cells are sent to a destination node over a connection made up of more than one transmission link in round robin fashion. This is called inverse multiplexing. Suitable transmission links are selected among a plurality of provisionable transmission links according to some selection criteria. According to some embodiments of the invention, the selection criteria are minimum delay and maximum bandwidth.
Patent CA-2226966-A1 (CA)
Inventor: ROSEN DAN
IPC: B01D61/14
Filed: 1996-07-02
Abstract: A process of making a photopolymer printing plate includes steps of exposing a photopolymer material to light that is applied in a predetermined image pattern, washing the plate with a processing solution in order to cause polymeric material from portions of the plate that are determined by the image pattern to dissolve from the plate into the processing solution, and removing the dissolved polymeric material from the processing solution on the molecular level by ultrafiltration. The use of ultrafiltration permits the polymeric material to be efficiently recovered without the need for conventional recovery techniques such as distillation or flocculation, and allows reuse of the filtrate to process additional photopolymer plates. A system (10) for performing the process is also disclosed. The system is comprised of a plate making system (12), and an ultrafiltration system (24) with an ultrafilter (26) and a recirculation conduit (32).
Patent CA-2227396-A1 (CA)
Inventor: BAYER GEORGE T
IPC: C10G9/20
Filed: 1997-08-22
Abstract: The inner surface of ethylene furnace tubes is diffusion coated with a sufficient amount of chromium or chromium and silicon to form a first coating having a thickness of at least two mils. This coating is then cleaned, neutralized, and grit blasted. Then a second coating of a sufficient amount of aluminum or aluminum and silicon is diffused onto the first coating to form a total coating thickness of at least five mils. The surface of the second coating is cleaned and polished to remove the nickel and iron-rich overlay which is present as a result of the coating process and to provide a smooth uniform surface. When ethylene is produced using furnace tubes which are coated in this manner less coking occurs.
Patent CA-2230358-A1 (CA)
Title: Manual lifting/lowering device for a patient translocation apparatus
Inventor: DOESCHER SIEGFRIED JOMANN
IPC: B66C23/48
Filed: 1998-02-24
Abstract: A manual lifting/lowering device for a patient translocation apparatus, which makes the apparatus effective even when a power source or a piston means of the apparatus works abnormally, is disclosed. The patient translocation apparatus includes a base, a boom supported by a mast mounted on the base, a hanger engaged with the boom for suspending the patient and a piston means driving the boom to raise or lower the patient. The manual lifting/lowering device comprises a slide, a lifter and a driving member. The slide is engaged with the piston means and defines a screw hole therein and a through hole adjacent to the screw hole for movably receiving the mast. The lifter is movably received in the screw hole of the slide. The driving member is provided for driving the slide up or down.
Patent CA-2232960-A1 (CA)
Inventor: MOSZNER NORBERT
IPC: A61K6/896
Filed: 1998-03-24
Abstract: Polymerizable and hydrolysable oxetane silanes and in particular silicic acid condensates which can be prepared therefrom are described,  which  exhibit  only  a  low  volume  shrinkage  on polymerization and produce polymers with high mechanical strength and therefore can be used above all as dental material or constituent thereof.
Patent CA-2233672-A1 (CA)
Title: Systems and methods for making decorative shaped metal cans
Inventor: GOGOLA MICHAEL R
IPC: B21D39/20
Filed: 1996-09-17
Abstract: A method of manufacturing a metallic can body (24) that is shaped distinctively in order to enhance its visual presentation to consumers includes, in one embodiment, steps of providing a can body blank (10) that has a sidewall that is of a substantially constant diameter; providing a mold unit (38) that has at least one mold wall (46) that defines a mold cavity conforming a desired final shape of the can body (24); positioning the can body blank (10) within the mold cavity (46); and supplying a pressurized fluid into the mold cavity so that the can body blank (10) is forced by pressure against the mold wall (46), causing the can body blank (10) to assume the desired final shape of the can body (24). Axial compression is preferably applied to the can body blank in order to reduce internal stresses during molding of the container. A second embodiment includes steps of radially deforming the can body blank in selected areas by selected amounts to achieve an intermediate can body that is radially modified, but is still symmetrical about its axis; and superimposing a preselected pattern of mechanical deformations that have an axial component onto the intermediate can body. Related apparatus and processes are also disclosed.
Patent CA-2234652-A1 (CA)
Title: Glass-microsphere coated article having a smooth surface and method for its preparation
Inventor: LAPERRE JAMES D
IPC: B32B17/06
Filed: 1996-10-28
Abstract: This invention relates to glass microsphere (bead) coated articles (5) having an upper surface comprising a layer of low refractive index transparent glass microspheres (1) such as those made from recycled ordinary glass. The articles of the invention have an extremely smooth tactile feel and a low friction surface even though they can be prepared from glass microspheres intermixed with abrasive irregularly shaped glass particles (2). The invention relates to a method making the bead coated articles of the invention and transfer articles that can be used to make the bead coated articles of the invention.
Patent CA-2235294-A1 (CA)
Title: Process and reactor for the preparation of ammonia
Inventor: GAM ERIK ANDREAS
IPC: C01C1/04
Filed: 1998-04-20
Abstract: Process for the preparation of ammonia at elevated pressure and temperature in an ammonia reactor, comprising passing a process stream of ammonia synthesis gas successively through at least three catalyst beds and reacting the synthesis gas in the beds; intermediately cooling of partially reacted synthesis gas leaving the catalyst beds by heat exchange in heat exchangers arranged between each catalyst bed and withdrawing a product effluent being rich in ammonia, wherein the process stream is obtained by combining prior to introduction into a first catalyst bed, a first feed stream of synthesis gas having been preheated through indirect heat exchange during the intermediate cooling of the partially converted synthesis gas, a second feed stream of synthesis gas having been preheated by indirect heat exchange with the product effluent, and a third feed stream of synthesis gas for adjustment of temperature of the process stream and wherein the first feed stream is passed successively through the interbed heat exchangers for cooling the partially converted synthesis gas.
Patent CA-2235906-A1 (CA)
Title: Apparatus for contacting solids in the form of flowable lumps with liquids and, optionally, gases
Inventor: ALBERT GERT
IPC: B01J8/00
Filed: 1998-04-27
Abstract: The instant invention relates to an apparatus for contacting solids in the form of flowable lumps with liquids and, optionally, gases, particularly for producing aluminium alcoholates by reacting aluminium with an excess of an aliphatic C3 to C10 alcohol, wherein solids charged to a reactor from the top are contacted in a spouted bed with liquid or a mixture of liquids and a rotary grate is provided for holding at least temporarily the aluminium lumps in the form of ingot off-cuts.
Patent CA-2237282-A1 (CA)
Title: Optical fiber having a low-dispersion slope in the erbium amplifier region
Inventor: PECKHAM DAVID W
IPC: H04B10/18
Filed: 1998-05-11
Abstract: An optical fiber [10] is disclosed that is suitable for use in wave-division-multiplex (WDM) systems [700] served by Erbium-doped fiber amplifiers [710]. The fiber has a chromatic dispersion whose absolute magnitude is at least 0.8 ps/(nm-km) over the wavelength region 1530 - 1565 nm, and has a dispersion slopethat is less than 0.05 ps/(nm2-km). This optical fiber exhibits a loss that is less than about 0.20 dB/km and is relatively insensitive to bending; moreover, its effective area exceeds 50 µm2. The optical fiber includes a core of transparent material having a maximum refractive index n1, and a layer of transparent cladding material on the outer surface of said core having a refractive index, n2. The core includes an annular region of transparent material whose minimum refractive index, n3, is depressed with respect to n2. These indexes are constrained by the following equations:        0.50 < (n1 - n2)/n2 < 0.70; and -0.30 < (n3 - n2)/n2 < -0.05. Optical fibers having a low dispersion slope for both positive-dispersion and negative-dispersion applications are shown.
Patent CA-2237756-A1 (CA)
Title: Expandable stent
Inventor: TOWER ALLEN J
IPC: A61F2/90
Filed: 1997-09-25
Abstract: A radially expandable stent which is formed of a fine wire (10) bent into a serpentine flat ribbon and helically wound around a mandrel (14), is disclosed. The stent is formed into a cylindrical sleeve (18) for mounting on a balloon catheter (38) and transluminal insertion into a vessel (35). A free end (20) of the wire (10) is looped or wrapped around the helix at locations (40X42)(44). The wire (10) forming the scent comprises an alloy selected from the group consisting of Pt-Ir or Au-Ni and bas a tensile strength of about 155,000 PSI to 175,000 PSI.
Patent CA-2238447-A1 (CA)
Inventor: WALLGREN KRIS E
IPC: B01F3/12
Filed: 1998-05-25
Abstract: An apparatus for loading a stream of cementitious material and a liquid is disclosed. The apparatus includes a liquid-dispensing structure is positioned above an the inlet end of a longitudinal chamber. The inlet end receives the stream of cementitious material. The liquid-dispensing structure dispenses the liquid into the stream of cementitious material passing through the chamber, such that the liquid mixes with the cementitious material as the cementitious material travels to the outlet end for loading.
Patent CA-2239772-A1 (CA)
Inventor: RHEE WOONZA M
IPC: A61L27/00
Filed: 1996-12-18
Abstract: Methods for completely or partially blocking, augmenting, sealing, or filling various biological lumens and voids within the body of a patient are disclosed. Lumens include arteries, veins, intestines, Fallopian tubes, and trachea. Voids include various lesions, fissures, diverticulae, cysts, fistulae, aneurysms, or other undesirable voids that may exist within a patient's body. In the most general method of the invention, an effective amount of a biomaterial is administered (e.g., via injection, catheter, or surgical implantation) into the lumen or void. Preferred biomaterial compositions for use in the present invention are disclosed.
Patent CA-2240770-A1 (CA)
Inventor: BALVE GERHARD
IPC: E21B7/30
Filed: 1998-06-16
Abstract: In apparatus for producing and expanding earth boreholes and for destroying and replacing underground pipelines or for driving in pipes,  a feed drive and a rotary drive having a plug-in coupling comprising a chuck and a locking portion at the end of a string is located in a frame. The string comprises a plurality of sections or lengths having an internal screw thread at one end and an external screw thread on the locking portion at the other end, which at the same time is provided with a key face to hold fast said string section while it is screwed together with the next following string section.
Patent CA-2243000-A1 (CA)
Inventor: WERMELINGER JOERG
IPC: B29C65/00
Filed: 1998-07-14
Abstract: The invention proposes an apparatus an a method of welding together articles made of a thermoplastic material by means of a butt welding method. The articles are held in coaxial relationship by means of a pair of clamping mechanisms. A heating element can be brought between the two articles to heat up their respective facing front faces, whereafter the heating element is removed and the heated front faces brought into mutual contact. For determining the strength of the welding zone, the ambient temperature is considered. For this purpose, a thermal sensor is provided that is arranged at the welding apparatus. The thermal sensor is thermally insulated against the welding apparatus.
Patent CA-2244330-A1 (CA)
Title: Novel histidine kinase
Inventor: ZALACAIN MAGDALENA
IPC: A61K48/00
Filed: 1998-09-16
Abstract: The invention provides histidine kinase polypeptides and DNA (RNA) encoding histidine kinase polypeptides and methods for producing such polypeptides by recombinant techniques.  Also provided are methods for utilizing histidine kinase polypeptides to screen for antibacterial compounds.
Patent CA-2244477-A1 (CA)
Title: Apparatus and method for leak detection
Inventor: SAADAT VAHID
IPC: A61F2/958
Filed: 1998-08-03
Abstract: An apparatus and method for detecting fluid leaks in a fluid-filled expandable device used to treat body tissue. The apparatus comprises an expandable device defining a fluid reservoir therein for holding a conductive fluid. A supply conduit is in fluid communication with the fluid reservoir for delivering the conductive fluid into the fluid reservoir. A first electrode lead is in electrical contact with the fluid reservoir. A second electrode lead is positioned outside the expandable device. A power supply is provided for generating a voltage between the first electrode and the grounding electrode. A detector detects variations in the electrical current passing between the first electrode and the grounding electrode.
Patent CA-2244908-A1 (CA)
Inventor: CORNISH MARK RAYMOND
IPC: B66F7/24
Filed: 1997-02-05
Abstract: A vehicle ramp (10) comprising four upstanding posts (12) which guide depending legs (21) of a generally horizontal elevational platform (20). The vehicle ramp (10) further comprises sloping side rails (14) supporting a plurality of cross rungs (15) the side rails (14) extending downwardly from one pair of upstanding hollow posts (12). The vehicle ramp (10) further comprises means (30) to effect elevation of that elevational platform (20) with respect to the remainder of the assembly. Such means for effecting the elevation of the platform can, for example, be constituted by a simple and inexpensive hydraulic jack which can be employed under the elevational platform.