baber/WOPTO huggingface dataset:
Patent CA-2229866-A1 (CA)
Title: Process and means for separation of a well production stream
Inventor: KJOS TORE
IPC: B01D17/00
Filed: 1995-11-27
Abstract: The invention relates to a system for separating oil/water/gas from a marginal field by using a combination of a coarse separator with short treatment duration which separates into three flows where one obtains an oil concentration of over 70 %, a water concentration of over 70 % and a gas quality for burning off, where the oil and water flows are treated in cyclone systems having defined geometric proportions and a gas portion is reinjected into the water injection flows without the use of a compressor. Gas/liquid cyclones may also be used before the choke valve so that the gas pressure is kept, or optionally reinjected or used for injector pump operation of low pressure wells.
Patent CA-2232680-A1 (CA)
Title: Reciprocating piston type internal combustion engine with a crank and multiple circular slide blocks
Inventor: LI ZHENGZHONG
IPC: F02B75/22
Filed: 1996-06-13
Abstract: The present invention relates to internal combustion engines, particularly to a reciprocating piston type internal combustion engine with a crank and multiple circular slide blocks, formed by substituting correcting rods with circular slide blocks. The engine comprises a crank-and-circular slide block mechanism including a cylinder body, pistons, circular slide blocks, a crankshaft and the like. In the cylinder body, there is a sliding tract in which there is a dynamic balance sliding piece. There are at least three circular slide blocks connected into an integral, with the phase difference of the adjacent circular slide blocks being 180°, and the circular slide blocks being rotably received in the pistons or the dynamic balance sliding piece and all being sleeved on the same crank pin. The engine of the present invention has excellent dynamic balanceability and compact configuration; and compared with existing engines of the same type, its size and weight are 30-50% and the man-hour for manufacture is 50-60%, and 70% of the parts are commonly used ones, it is reliable in operation, has long service life and low energy-consumption.
Patent CA-2233665-A1 (CA)
Inventor: ELLIOTT GREG J
IPC: A61H23/02
Filed: 1996-10-22
Abstract: L'invention concerne un système de massage destiné à être utilisé dans un meuble, qui comprend une pluralité de dispositifs vibreurs conçus et assemblés selon une configuration en intervalles dans le meuble. Le système comprend en outre une source d'alimentation et une pluralité d'interrupteurs qui permettent de coupler sélectivement les dispositifs vibreurs à la source d'alimentation selon une séquence qui dépend de la réception d'un certain nombre de signaux d'entrée préétablis. Un organe de traitement couplé à la matrice de commutation comprend une mémoire qui conserve une pluralité de séquences de signaux. Un sélecteur couplé à l'organe de traitement est équipé d'une pluralité d'actionneurs individuels, chacun d'entre eux fournissant un signal d'entrée prédéterminé à l'organe de traitement. Cet organe de traitement peut accéder à l'une quelconque des séquences de signaux et fournir ces séquences aux interrupteurs, suivant la sélection de chacun des actionneurs, de sorte que les dispositifs vibreurs puissent être actionnés selon telle ou telle séquence préétablie correspondant au choix de tel ou tel actionneur. Enfin, il existe un redresseur à deux alternances dont les bornes d'entrée sont reliées à une source d'alimentation et dont les deux bornes de sortie fournissent un courant redressé sur les deux alternances.
Patent CA-2234597-A1 (CA)
Title: Landmine detection vehicle
Inventor: BORZA MICHAEL A
IPC: F41H11/16
Filed: 1998-04-09
Abstract: The present invention relates to a vehicle for use in detecting landmines. The vehicle is remotely controlled and includes a variety of sensing apparatus disposed to scan a path at least the width of the vehicle. The vehicle is provided with path markers for indicating scanned path width, sensors for determining potential landmines and other sensors for use in confirming landmine locations. Individuals then follow the system and detonate or excavate landmines at the determined locations.
Patent CA-2236355-A1 (CA)
Title: Le papier mineral
Inventor: PARAYRE SYLVAIN
IPC: D21H13/42
Filed: 1998-04-30
Abstract: A durable high-quality paper product comprises between 40% and 90% by weight of minerai fiber; between 10% and 60% by weight of cellulose fiber; approximately 3% of a binder agent, such as amphoteric starch; approximately 3% of a retention agent, (e.g. colloidal silica); approximately 1.0 % of an internal sizing agent (e.g. Alkyl Ketene Dimer); and a surface sizing agent. The paper product is manufactured by a process comprising the steps of: pulping cellulose fiber in a conventional manner in a first pulper; pulping an aqueous dispersion of mineral fiber in a second pulper; blending the cellulose and mineral fiber pulps; adding a internal sizing agent to the pulp mixture; adding a retention agent to the pulp mixture; sifting the pulp mixture; adding a binder agent to the sifted pulp mixture; and applying the thus treated pulp mixture onto a moving screen of a conventional paper-making machine.
Patent CA-2236908-A1 (CA)
Inventor: ORTEN BIRGER
IPC: A61B7/04
Filed: 1996-11-14
Abstract: The pick-up head (1) with an acousto-electrical transducer (4) for converting sound vibrations to electrical signals, comprises as characterizing features a sound influencing bell (2) arranged around a slender peg (3) bonded directly to the transducer (4), and the sound influencing bell (2) delimits a listening area on a body surface and influences to a predetermined degree and in a predetermined manner, by means of internal reflection and/or absorption, the direct sound picked up by the slender center peg (3). The bell (2) is acoustically decoupled from the center peg (3).
Patent CA-2238456-A1 (CA)
Inventor: BINGEL NELSON G III
IPC: E04H12/22
Filed: 1998-05-22
Abstract: A reinforcing apparatus for supporting a utility pole against the bending forces of transverse wind components is  described.   The apparatus  comprises  an  intermediate section extending to and meeting with spaced apart flanges. The intermediate section and the flanges are configured such that the elastic axis and shear center of the reinforcing apparatus is closer to the longitudinal axis of the pole and the point of load transfer from the pole than realized by prior art reinforcing apparatus.  The intermediate section may have a variety of shapes, such as a "U" shape, "V" shape, or  channel  shape.    The  reinforcing  apparatus  may  be constructed of high yield strength steel and is secured to the pole by means of one or more bands, or by means of bolts, screws or other fastening means.
Patent CA-2240415-A1 (CA)
Inventor: HIRAKAWA YASUSHI
IPC: H01M50/574
Filed: 1996-10-28
Abstract: The present invention relates to an explosion-proof seal plate for a sealed cell and a production method thereof and aims at providing an explosion-proof seal plate and production method thereof, wherein problems of a risk of explosion of a cell due to an excessive pressure inside the cell caused by abnormal generation of a gas through a chemical reaction accompanying over charge or erroneous use of the cell or damaging of electronic equipment using the cell as the power source are solved, ignition and other accidents can be prevented with a high accuracy by reliably cutting off an electric current when the cell internal pressure increases, and the increase in the resistance due to permeation of an electrolyte can be limited.        In order to accomplish this aim, the present invention provides a thin portion 7a having a breaking strength of 18-24 kg/cm2 in the central portion of an upper metallic foil 7 made of aluminum and a thin portion 8a having a breaking strength of 10-13 kg/cm2 in the central portion of a lower metallic foil 8 made of aluminum, wherein the diameter A of the thin portion 7a of the upper metallic foil and the diameter B of the thin portion 8a of the lower metallic foil 8 satisfy the relation AB. The two metallic foils are welded at the central portions with an insulating gasket interposed, and encased in a metallic case 4 made of aluminum having 4 vent holes, on top of which a temperature dependent resistor 5 and a metallic cap 6 having 4 vent holes are then placed. A seal plate is obtained by sealing the periphery of the metallic case 4, with which it is possible to prevent accidents such as ignition and explosion of a cell by reliably allowing internal gas to exhaust in the event of generation of a large volume of gas under an abnormal condition of a sealed cell.
Patent CA-2245593-A1 (CA)
Inventor: YASUNAMI SHOICHIRO
IPC: H01M4/58
Filed: 1997-02-14
Abstract: A nonaqueous secondary battery containing an anode sheet having a layer composed mainly of a lithium-containing metal oxide, a cathode sheet having a mixture layer composed mainly of a cathode material and a metallic material composed mainly of lithium and laid on the mixture layer, a nonaqueous electrolyte containing a lithium salt, and a separator. Lithium is inserted into the cathode sheet as a standby reserve by inserting the anode sheet, cathode sheet, and separator in a battery can in a wound state, and the sheets and separator are aged after the electrolyte is enclosed in the battery can.  Therefore, the secondary battery has a high discharge capacity and an excellent charging-discharging cycle characteristic.
Patent CA-2246255-A1 (CA)
Inventor: VOLLKOMMER FRANK
IPC: H01J61/54
Filed: 1997-12-10
Abstract: Disclosed is a cold cathode (1) for use in discharge lamps, including in discharge lamps (6) operating with a dielectrically hindered discharge, comprising two electroconducive electrodes facing each other, between which a ferro-electric material is sandwiched. At least one of the electrodes presents one or more openings. When the cathode is operating, a voltage of quickly alternating polarity is applied to both electrodes, thereby freeing electrons on the surface of the ferro-electric material. The working voltage of the discharge lamp causes an acceleration of said electrons, which pass through the openings towards the anode (8) and are used for igniting the discharge lamp and keeping it in operating mode.
Patent CA-2248609-A1 (CA)
Inventor: WU KUAN-TING
IPC: C04B14/28
Filed: 1997-03-07
Abstract: An improved form of calcium carbonate which is acid tolerant to enable its use as a filler material in the making of neutral to weakly acid paper, and a process for producing this acid tolerant calcium carbonate are provided. This acid tolerant calcium carbonate comprises a mixture of calcium carbonate with at least about 0.1 percent, based on the dry weight of the calcium carbonate, of sodium alimunate together with at least about 0.1 percent, based on the dry weight of the calcium carbonate, of one or more weak acids.
Patent CA-2250708-A1 (CA)
Title: Method of cutting hardened steel with high accuracy
Inventor: SHIRAISHI JUNICHI
IPC: B23B1/00
Filed: 1998-10-20
Abstract: A method of cutting hardened steel using a cBN sintered tool which can improve the surface roughness while maintaining high dimensional accuracy. The upper limit of the tool feed rate is set at such a value that a theoretical surface roughness calculated from the feed rate is between 2/3 and 1/1000 of the target surface roughness. The amount of change of the feed rate between the upper and lower limits of the tool feed rate is set to be between 0.002 and 0.05 mm/rev, and the amount of every feed rate change is set not to be equal to the original feed rate multiplied by an integer. The feed rate is changed forcibly for every number of workpieces for which the total cutting length is between 10 and 1000 meters.
Patent CA-2251850-A1 (CA)
Title: Water-soluble tetrazolium salt compounds
Inventor: ISHIYAMA MUNETAKA
IPC: C07C309/59
Filed: 1997-04-17
Abstract: Tetrazolium salt compounds represented by general formula (1): wherein R1 and R2 each independently represent a hydrogen atom, a nitro group, a cyano group, a carboxyl group, or a halogen atom, preferably a nitro group; R3 represents an alkyl or alkoxyl group, preferably a methyl or methoxy group; and M represents an alkali metal or an ammonium. The compounds are useful for the quantitative determination of dehydrogenases and have high water solubility and storage stability in an aqueous solution form.
Patent CA-2252023-A1 (CA)
Inventor: BAUMANN HANS D
IPC: F16K31/44
Filed: 1997-04-01
Abstract: A rotary valve actuator and linkage provide an actuator (48) having a tubular housing with end caps and a piston that is moved by fluid pressure against a compression spring (89). A rolling diaphragm is used to bias the piston. A  pair of ports (60) are provided on opposite sides of the housing and a linkage (62) having two arms (64, 66) is interconnected with the piston through the ports. The linkage is coupled to a rotary valve shaft and linear movement of the piston causes rotational movement of the shaft. The linkage includes two separate arms and a centerpiece. The arms and the centerpiece interengage each other at angled surfaces that force the centerpiece and the arms into radial engagement with the shaft when axial compression is provided to the arms and centerpierce to force them toward each other.
Patent CA-2255187-A1 (CA)
Title: One piece optical assembly for low cost optical scanner
Inventor: BARD SIMON
IPC: G06K7/14
Filed: 1998-12-02
Abstract: An optical scan module, for example for an optical scanner, includes an integrally molded plastics material member which defines not only the laser focusing lens, but also the laser focusing aperture and the collection mirror. In addition, the molded member may act to house and to locate both a semiconductor laser and a photodetector, thereby ensuring easy and accurate placement of those elements within the scanning assembly. The optical assembly may be in modular form, mounted onto a common printed circuit board with a beam scanner.
Patent CA-2257636-A1 (CA)
Inventor: GRADZKI PAWEL M
IPC: H05B41/298
Filed: 1998-03-23
Abstract: A fluorescent lamp ballast having an integrated circuit driver which avoids lamp flicker caused by momentary dips in mains voltage during lamp turn on.  The anti-flicker scheme within the fluorescent lamp ballast driver distinguishes between operating conditions during and after preheat of the lamp electrodes. By maintaining the voltage for powering the integrated circuit driver above its minimum threshold, the driver does not momentarily shut off during lamp turn on.
Patent CA-2262498-A1 (CA)
Title: Biodegradation process for de-toxifying liquid streams
Inventor: LUGOWSKI ANDREW JERRY
IPC: C02F3/34
Filed: 1997-07-15
Abstract: A biological degradation process is disclosed. The biological degradation process utilizes a unique thermophilic aerobic bacterial mixture capable of converting, biologically or via oxidation, aqueous and other liquid streams containing substances that are ordinarily considered toxic to conventional biological systems. Substances ordinarily considered toxic to conventional biological systems, but which nevertheless are converted by the thermophilic aerobic bacterial mixture, include aniline; benzothiazole; 5,6-dihydro-2-methyl-N-phenyl-1,4-oxathiin-3-carboxamide; lindane (technically known as 1.alpha.,2.alpha.,3.beta.,4.alpha.,5.alpha.,6.beta.-hexachlorocyclohexane); 2-mercaptobenzothiazole; toluene; and combinations thereof. The unique thermophilic aerobic bacterial mixture comprises relative effective amounts of Pseudomonas stutzeri, Pseudomonas aeruginosa, Pseudomonas fluorescens, Pseudomonas mendocina and Alcaligenes denitrificans subsp. xylosoxydans. A  biological degradation process for treating the liquid stream containing substances ordinarily considered toxic comprises contacting the stream with the thermophilic aerobic bacterial mixture, for an amount of time that is effective for de-toxifying the stream.
Patent CA-2262757-A1 (CA)
Inventor: STEINER GUENTHER
IPC: B29C45/26
Filed: 1997-07-12
Abstract: This invention concerns a process for producing closed or open hollow parts out of plastics. To this effect, a core (12) or mold body which extends into the mold cavity and is attached to a form element and supported on other form elements is situated between two mold half-shells. The core is supported by one or more movable stops (13-18) which can be retracted from the mold cavity. Plastic is injected into the mold via a first injection channel (22) with the core in retained position. Subsequently the retaining stops (13-18) are retracted and the mold cavity is completely filled via a second injection channel (23, 24, 25).
Patent CA-2263305-A1 (CA)
Title: Removable bond for abrasive tool
Inventor: EAGAR THOMAS W
IPC: B24D3/06
Filed: 1997-08-27
Abstract: A bond for a metal single layer abrasive tool can be easily chemically and electrochemically stripped from the metal core of a recovered used tool to facilitate reuse of the core. Relative to conventionally bonded tools, the speed of stripping the novel bond is quick, and the stripped core has a smooth, clean surface which needs only minimal mechanical repair prior to reuse. The composition of the novel bond consists essentially of copper, tin and titanium. It can be brazed at temperatures below diamond graphitization and is chemically compatible with diamond. Hence, the bond is particularly useful for the manufacture of large diameter, superabrasive metal single layer abrasive wheels employed in the construction industry. The bond can be applied to the cutting surface of the abrasive tool as a uniform mixture of bronze alloy, titanium compound and copper powders. The powders may be mixed with a liquid vehicle and applied as a paste. The method of brazing the bond incorporates heating the bond composition to a temperature at most about 880 ~C to melt the bronze alloy and titanium compound components, and raising the temperature to at least about 900 ~C to dissolve the copper. The bond can also include an about 10-200 µm thick barrier layer of copper coating the cutting surface between the core and the bond composition.
Patent CA-2264619-A1 (CA)
Inventor: MUKHOPADHYAY DEBASISH
IPC: C02F1/42
Filed: 1997-08-12
Abstract: L'invention a trait à un procédé de traitement de l'eau par séparation par membrane destiné à supprimer la dureté ainsi qu'à éliminer une alcalinité non hydroxyde par piégeage dans une résine échangeuse de cation faiblement acide. Le procédé comporte une ionisation de composants modérément ionisables, de la silice par exemple, par élévation du pH jusqu'à 10 environ ou davantage. La séparation par membrane en est, de ce fait, notablement améliorée. Le passage de bore, de silice et de carbone organique total est diminué par 10 ou davantage. Une récupération à 90 %, sinon davantage, est rendue possible du fait de l'utilisation d'un système d'alimentation en eau fortement salinisée tandis que l'on parvient simultanément à une importante diminution de la fréquence de lavage. L'appareil utilisé pour ce procédé de traitement de l'eau fait intervenir une ou plusieurs membranes d'osmose inverse (30), un échangeur d'ions à lit mélangé (44, 46), un filtre micronique (48), un stérilisateur aux ultraviolets (49), un appareillage de décarbonation (20) et un équipement d'électrodéminéralisation (150).
Patent CA-2265965-A1 (CA)
Inventor: USUBA SHINJI
IPC: H04L12/64
Filed: 1997-07-24
Abstract: Telephone sets are incorporated in a LAN. When, for example, a telephone set (5) makes a call to a telephone section (8), the call is controlled by exchanging information between the personal computers (1 and 4) provided to the telephone sets (5 and 8) through a LAN hub (10), a LAN switch device (50), and a LAN hub (20). The voice data of the telephone sets (5 and 8) are respectively packeted in the data sections of MAC frames by means of TLAs (30 and 40) and relayed to LAN-SW interfaces (30a and 40a). To the data sections on the interfaces (30a and 40a), frames having fluctuation absorbing functions are applied. The packeted voice data are respectively sent to the telephone sets (8 and 5) through the LAN switch device (50) and TLAs (40 and 30) based on the MAC addresses of the MAC frames.
Patent CA-2266999-A1 (CA)
Title: Implantable interfaces with embedded signal carriers and methods for fabricating same
Inventor: BOOGAARD JEROME J
IPC: A61N1/05
Filed: 1999-03-26
Abstract: An implantable interface has a layer of parallel signal carrier members, such as wires, bonded together by a layer of flexible biocompatible bonding agent. The wires have sheaths surrounding electrical conductors. The sheaths are apertured at selected locations to expose the electrical conductors to provide electrodes. The interface may have interengageable closure members along its sides so that it may be used as a nerve cuff. The interface can be highly mechanically compliant and also provides good shielding against electrical interference. The wires may be extended to provide well supported axially extending leads. The apertures may be cut with a computer controlled laser. Where the closure members include interdigitating tubular members the tubular members may also be cut with a laser, thereby providing an accurately formed nerve cuff.
Patent CA-2267441-A1 (CA)
Inventor: CHEN JOHN Y
IPC: A63H33/18
Filed: 1997-09-30
Abstract: A novel dental floss and gum massager made in the form of a strand, a tape or a sheet of polymeric material, said sheet having selectively positioned multiple sized holes for inserting through and holding by the fingers of the hands. The floss provides substantially very little constriction of blood flow surrounding the fingers as the floss is held taught and the peripheral edge of the floss is being manipulated and worked by the gripping, pulling, pushing, deforming, and guilding back and forth actions of the fingers during massaging of the gums and flossing of the teeth.
Patent CA-2269657-A1 (CA)
Title: Materials and methods for detection of oxalobacter
Inventor: PECK AMMON B
IPC: C12Q1/68
Filed: 1997-09-23
Abstract: The subject invention concerns the novel use of formyl-CoA transferase enzyme together with oxalyl-CoA decarboxylase enzyme for the detection and measurement of oxalate in biological samples. The use of the enzyme system according to the subject invention results in the conversion of oxalate into carbon dioxide and formate. Because the production of formate is directly correlated to the concentration of oxalate present in a sample, the determination of the resulting formate concentration provides an accurate, sensitive and rapid means for detecting even low levels of oxalate. The subject invention further concerns the cloning, sequencing and expression of the genes that encode the formyl-CoA transferase enzyme and the oxalyl-CoA decarboxylase enzyme of Oxalobacter formigenes. The subject invention also concerns methods for detecting the presence of Oxalobacter formigenes organisms in a sample, and the polynucleotide probes and primers used in the detection method.
Patent CA-2270869-A1 (CA)
Title: Constrained helical peptides and methods of making same
Inventor: STAROVASNIK MELISSA A
IPC: C07K7/52
Filed: 1997-11-05
Abstract: Provided are cyclized peptides with a constrained region(s) having an .alpha.helical conformation. Constrained helical peptides having amino acid sequences from HIV gp41 are provided, as is their use in preparing antibodies that prevent viral membrane fusion. Also provided are methods for making such cyclized peptides.