baber/WOPTO huggingface dataset:
Patent CA-2271102-A1 (CA)
Title: A resonant power converter for energising a coil
Inventor: FERREIRA JAN ABRAHAM
IPC: H02M/
Filed: 1997-11-07
Abstract: A pulse generator is provided for energising a coil with period bipolar current pulses for the purposes of airborne prospecting. The pulses have a generally square waveform, and the pulse generator includes a resonant DC to AC converter circuit including a DC input and an output coupled to the coil. A  control circuit is provided for controlling the switching of the converter, and a resonant capacitor is connected in parallel across the DC input. A  decoupling diode is provided for decoupling the resonant capacitor from the DC  input when the voltage across the resonant capacitor exceeds that of the DC  input. The converter includes first and second resonant charging sub-circuits, first and second resonant discharging sub-circuits, first and second freewheeling sub-circuits and first and second exponential charging sub-circuits. The control circuit is arranged to control the amplitude and frequency content of the square waveform by switching the convertor circuit to operate between the above sub-circuit types in at least one controlled switching cycle during unipolar current pulse intervals. The circuit further includes a clamping circuit arranged to supply a substantially constant DC  voltage to the coil which is higher than that of the DC input.
Patent CA-2275415-A1 (CA)
Title: Peinture et additif pour le trempage electrophoretique cathodique
Inventor: STRAUSS UDO
IPC: C09D5/44
Filed: 1997-12-18
Abstract: L'invention concerne un procédé permettant de produire des peintures pour trempage électrophorétique, constituées de dispersions de liants aqueuses, selon lequel on ajoute, éventuellement, à ces dispersions de liants, des catalyseurs, ainsi qu'un ou plusieurs aldéhydes de la formule générale R-CH=0, ou bien un ou plusieurs composés qui libèrent de tel adéhydes, R représentant un atome d'hydrogène ou un reste alcyle présentant un à dix atomes de C.
Patent CA-2277536-A1 (CA)
Title: Photo detector alignment device and method
Inventor: HOUSKAMP ROBERT W
IPC: G01D5/34
Filed: 1999-07-13
Abstract: An alignment device for aligning a photoelectric device with a target comprises a mounting plate and a fixed bracket spaced from the mounting plate. Screws attached to the mounting plate and the fixed bracket alter the distance therebetween when rotated, so that the orientation of the mounting plate with respect to the fixed bracket can be adjusted. A spring mounted around each of the screws between the mounting plate and the fixed bracket is adapted to push the mounting plate away from the fixed bracket.
Patent CA-2280291-A1 (CA)
Title: Electrical cable and method and equipment for the obtention thereof
Inventor: VALLS PRATS AGUSTI
IPC: H01B13/14
Filed: 1999-08-13
Abstract: The method includes a step in which a conductor wire (4) is coated with a fused plastic material (7) and a step in which said plastic material is cooled, and it is characterized in that it includes a step in which a lubricating material (9) is sprayed onto the surface of the cable (2). Said cable (2) which includes at least one conductor core (4) and at least one coating of plastic material (7) incorporates a lubricating material (9) on the exterior coating. The equipment (1) for the manufacturing of electrical cables (2) which includes a reel (3) for supplying a conductor wire (4) to an extruding head (5), which has a tank (6) containing plastic material (7) for coating the aforesaid conducting wire (2), and a reel (11) for taking up the cable (2), includes a device (8) for the application of a lubricating material (9) onto the surface of the cable (2).
Patent CA-2280666-A1 (CA)
Title: Combustion air shutoff system for a fuel-fired heating appliance
Inventor: HALL JACOB H
IPC: F23N3/04
Filed: 1999-08-23
Abstract: A fuel-fired water heater has a combustion chamber disposed above a wall structure forming a flow path for combustion air being drawn into the combustion chamber during firing of the fuel burner portion of the water heater. A combustion air shutoff system is incorporated in the water heater and functions to sense an undesirably high firing temperature in the combustion chamber and responsively shut off essentially all further air flow to the combustion chamber and thereby terminate combustion therein. In various disclosed embodiments thereof, the combustion air shutoff system includes a damper member movable between an open position in which its permits air flow through the combustion air flow path, and a closed position which it blocks essentially further air flow through the combustion airflow path. The damper is releasably held in its open position by a eutectic metal fusible link member positioned exteriorly adjacent an exterior wall of the combustion chamber. When a predetermined high limit firing temperature is reached within the combustion chamber, the correspondingly increased temperature of the combustion chamber wall melts the fusible link member. In response, the shutoff system causes the damper to move to its closed position to terminate essentially all further flow of combustion air through the combustion air flow path into the combustion chamber.
Patent CA-2281439-A1 (CA)
Title: Improved starting circuit for low-pressure discharge lamp
Inventor: FISCHER KLAUS
IPC: H05B37/02
Filed: 1999-08-25
Abstract: A starting circuit for controlling lamp current of a low pressure discharge lamp during the starting phase of the lamp. The starting circuit includes a temperature sensor which measures temperatures that are dependent on the lamp temperature. The starting circuit may also include a photo detector for measuring the luminous flux of the lamp or a voltage measuring device for measuring the running voltage of the lamp. The circuit includes means for controlling the lamp electrical current dependent on outputs of the aforesaid sensors to increase the level of luminous flux produced by the lamp during starting phase.
Patent CA-2283225-A1 (CA)
Title: Watch face having tactile portions for activating functions
Inventor: STEWART MICHAEL A
IPC: G04G21/00
Filed: 1998-02-06
Abstract: Described is a watch having a face (38) disposed over watch module (32) with display (34) presenting a plurality of functions. Watch face (38) includes tactile portions (44) that may be depressed to activate the functions presented on display (34). Watch face (38) has four tactile portions (44) to activate four primary functions. Watch face (38) can also be pressed in between tactile portions (44) to activate four secondary functions. Watch face (38) is secured to module (32) which is mounted at a central pivot point in a base. Watch module (32) has switches on its edge, one beneath each tactile portion (44), and a flexible waterproof seal which includes knobs, one for each switch, which closes the associated switch when associated tactile portion (44) is depressed. A platform prevents straight-down depression of the watch which could cause more than two switches to close. A bumper surrounding the perimeter of watch face (38) prevents inadvertent depression of the tactile portions.
Patent CA-2283600-A1 (CA)
Title: Rotator for a satellite dish and feed horn
Inventor: ROGERS JOHN STEPHEN
IPC: H01Q1/12
Filed: 1999-09-24
Abstract: In a collapsible roof mounting for orienting a satellite dish system from below, an upper channel-shaped formation arranged to present a dish-shaped component adjacent one end and an arm formation for the feed horn intermediately thereof and nestable within and interconnected to a lower channel-shaped formation adjacent the other end for swinging movement thereabove, a tubular shaft formation supporting the lower channel-shaped formation centrally thereof from below for rotation about a substantially upright axis, a displaceable linkage including a worm gear interconnected to the upper channel-shaped formation and a worm extending axially of the tubular shaft formation for swinging the upper channel-shaped formation upwardly from the nested disposition and reversely, a handle formation for the tubular shaft formation below the roof for imparting rotation thereto and a crank for the worm located below the handle formation for imparting displacement to the worm and worm gear.
Patent CA-2283725-A1 (CA)
Title: Method of disinfecting water with iodine species
Inventor: HARVEY WAYNE A
IPC: C02F1/50
Filed: 1997-08-15
Abstract: A water treatment system and apparatus for producing bacteria- and virus-free water from a bacteria and virus-containing water supply, said apparatus comprising a) generator means (38) for holding solid elemental iodine and to allow solubilization of said iodine under dynamic aqueous flow; b) means (32) for feeding a first portion of said water supply to said generator means to produce an aqueous concentrated iodine solution; c) means for providing a second portion of said water supply; d) means for providing said aqueous concentrated iodine solution to said second portion of said water supply to provide a blended water supply; e) storage means (48) for holding said blended water supply to provide said bacteria- and virus-free water; f) means for measuring water flow (20, 36) of said first and said second portions; g) means for measuring the pH (30) of said second protion; h) means for adjusting the pH (26) of said second portion; i) means for mesuring the temperature (42) of said concentrated aqueous solution; and j) control means (18) for receiving flow data, pH data and temperature data from said means for measuring flow of said first and said second portions, said means for measuring pH of said second portion; said means for measuring temperature of said concentrated aqueous solution and means for adjusting pH of said second portion.
Patent CA-2285911-A1 (CA)
Inventor: SHIPLEY JOHN ANTHONY
IPC: C23F11/02
Filed: 1999-10-13
Abstract: A corrosion inhibiting composition includes, by weight, 2% to 20% alkali metal nitrite, 16% to 90% alkali metal benzoate and 4% to 50% alkali metal molybdate. The composition is mixed with a resin carrier to form a master batch. A plastic composition containing a corrosion inhibiting component and a resin is also provided wherein the corrosion inhibiting component includes 0.13% to 1.25% alkali metal nitrite, 1% to 5.63% alkali metal benzoate and 0.25% to 3.13% alkali metal molybdate by weight of the plastic composition. The plastic composition can be formed into a film which can be used to cover metal articles thereby preventing corrosion.
Patent CA-2288668-A1 (CA)
Title: Drawer slide undermount bracket with flexible locking tab
Inventor: SINGH ATMA KAINTH
IPC: A47B88/49
Filed: 1998-04-22
Abstract: An improved drawer slide member and drawer slide undermount bracket. The drawer slide member (96) comprises a vertical web (97) having guide apertures with angled sides leading to a slot (59) adapted to receive support tabs (31) projecting from an undermount bracket. The undermount bracket, or shelf mount bracket, is longitudinally restricted from motion, and the support tabs (31) thereby locked in the slots (59), by lock tabs (35) located on a flexing finger (37) within the undermount bracket which are positioned in a lock tab aperture in the web of the slide member.
Patent CA-2288683-A1 (CA)
Title: Apparatus, system and method for processing acoustic signals to image behind reflective layers
Inventor: MINEAR JOHN W
IPC: G01V1/44
Filed: 1998-05-14
Abstract: A system for acoustically imaging a target region behind an acoustically reflective layer includes a transducer configuration for acquiring acoustic image data from the reflective layer and target region, wherein the reflective layer and target region are divided into voxels circumferentially disposed about a central point. The system includes a mechanism for processing the data wherein the suppressing mechanism facilitates the acquisition of image data from the target region. A transducer configuration of an acoustic sensing tool for determining the consistency of a first medium disposed between a layer having a greater acoustic reflectivity than the first medium and a second medium, the sensing tool including a rotating head, wherein the tool comprises first, second and third transducer pairs in a spaced apart configuration, each pair comprising a transmitting transducer for transmitting an acoustic radiation signal in an insonified zone, and receiving transducer having a receiving radiation pattern in an insonified zone.
Patent CA-2289329-A1 (CA)
Inventor: NAIKI MITSURU
IPC: A61K39/395
Filed: 1999-11-10
Abstract: This invention provides a novel suppressive agent against expression of cell adhesion molecules containing histamine-added immunoglobulin as an effective component.
Patent CA-2290033-A1 (CA)
Title: Semiconductor dark image position sensitive device
Inventor: IDESAWA MASANORI
IPC: H01L31/02
Filed: 1999-11-18
Abstract: A semiconductor dark image position sensing device comprises a photoelectric layer generating a photoelectric current in a portion where light is input in response to intensity of the light input, a resistive element layer into which the photoelectric current generated in the photoelectric layer flows from a portion corresponding to the position of light input, a second resistive element disposed in association with the photoelectric layer for replenishing an insufficient amount of electric current with respect to the photoelectric current so as to flow the same into the resistive element layer in such that a distribution of electric current flowing into the resistive element layer corresponding to the position of light input becomes substantially uniform over a whole sensing region, and signal electric current output terminals disposed at the opposite ends of the second resistive element.
Patent CA-2290201-A1 (CA)
Title: Vortex sewage disposal apparatus
Inventor: LEUNG WAI ON
IPC: C02F1/52
Filed: 1999-11-23
Abstract: A vortex sewage disposal apparatus for the disposal of construction sewage, comprising a hopper-type casing, a water inlet pipe, a lower outlet and a frame; within the water inlet pipe these are provided rapid-mixing blades, on the wall of the inlet pipe there are provided an upper and a lower reagent-filling holes used to add two treatment reagents successively, at the center of the hopper casing there is provided a central tube, at the lower end of the central tube there is mounted a conical separator, and inside the central tube there is provided a screw-type water lifter; on the top of the hopper casing there is provided a top baffle plate acting as an upper cover; a bleed pipe is provided for discharging oil and gas, the silt is discharged through the lower outlet, and the clear water ascents to a clear water tank and a water-directing tray and then flows into a water discharging pipe after crossing a dam board to be discharged.
Patent CA-2290947-A1 (CA)
Title: Cardenolides de phosphocholinate
Inventor: CHASALOW FRED I
IPC: C07J19/00
Filed: 1997-05-28
Abstract: L'invention concerne des cardénolides et des composés apparentés liés par covalence à des fractions de phosphocholine, ainsi que des formulations pharmaceutiques comprenant de tels composés. L'invention décrit également des procédés de traitement de l'hypertension, du syndrome prémenstruel, de la prééclampsie et du rein polykistique à l'aide des composés de l'invention.
Patent CA-2291647-A1 (CA)
Title: Antagonists of gonadotropin releasing hormone
Inventor: WYVRATT MATTHEW J JR
IPC: A61P43/00
Filed: 1998-06-01
Abstract: There are disclosed compounds of formula (I) and pharmaceutically acceptable salts thereof which are useful as antagonists of GnRH and as such may be useful for the treatment of a variety of sex-hormone related and other conditions in both men and women.
Patent CA-2292939-A1 (CA)
Inventor: WILLEKES ELMAR
IPC: H04L69/40
Filed: 1999-12-22
Abstract: The invention relates to an application-specific integrated circuit (ASIC) (1) for use in communication facilities of a digital network in which a data signal to be transmitted is composed of frames. To improve such an integrated circuit (1) in such a manner that external testing devices for testing the performance of the integrated circuit (1) can be dispensed with, the invention proposes to provide the integrated circuit (1) with a circuit (4) for executing the ASIC functions and with a data test circuit (3) having first means (5) for generating a framed test signal (6) and second means (7) for detecting bit errors in a received test signal (8).
Patent CA-2296842-A1 (CA)
Inventor: MATOSSIAN-ROGERS ARPI
IPC: C07K16/42
Filed: 1998-07-20
Abstract: L'invention concerne des anticorps monoclonaux et polyclonaux reconnaissant des molécules situées sur les cellules sécrétrices de plusieurs tissus qui sont la cible de maladies auto-immunes, ce qui permet d'obtenir un procédé prophylactique et thérapeutique contre les maladies auto-immunes et autres états associés à un dérèglement hormonal, à une hyperinsulinémie et à une insulinorésistance. L'invention concerne également une procédé de détection d'anticorps similaires dans le sérum humain ou autres fluides corporels, pouvant être utilisés pour la mise au point de kits de diagnostic. Les méthodes de traitement selon l'invention consistent à administrer des préparations d'anticorps et de leurs molécules cibles ainsi que des vecteurs contenant des séquences codantes des anticorps et leurs molécules cibles.
Patent CA-2298044-A1 (CA)
Inventor: SCHEDLER BERTRAM
IPC: C22C9/00
Filed: 2000-02-04
Abstract: The invention describes a process for the production of a composite structural part which can withstand high thermal stress, consisting of at least one graphite part and at least one metal part made of a curable copper alloy. In accordance with the invention, the metal part is bonded, by an HIP process, with the graphite part, which has a layer made of copper or a copper alloy on the bonding surface. In this way, it is possible to use copper-chromium-zirconium alloys with more complex composite structural part constructions and with thin-wall parts of the metal component, without the good mechanical characteristics of the copper-chromium-zirconium alloy being destroyed.
Patent CA-2299475-A1 (CA)
Title: Method for producing an aqueous solution of free hydroxylamine
Inventor: MAUER PETER
IPC: C01B21/14
Filed: 1998-08-04
Abstract: The invention relates to a method for producing an aqueous solution of free hydroxy-lamine by treating a hydroxylammonium salt with ammonia in the counter-current in a stripping column. As a result, hydroxylamine is released and at the same time, the solution obtained is separated into an aqueous hydroxylamine solution and a salt fraction by distillation. The inventive method is simple and mild, and can be carried out on a large scale. The risk of decomposition is minimal due to the low thermal burden, the low concentration of hydroxylamine and the short residence time involved in the process.
Patent CA-2299742-A1 (CA)
Inventor: GEREIN TIM
IPC: E01F5/00
Filed: 2000-02-16
Abstract: The invention is an apparatus for thawing frozen culverts that are blocked with ice and snow. It consists of three parts A pipe or tube that is attached to the inner length of the culvert by clamps or a clamp/ bolt assembly and water tight end caps for the pipe. The pipe must me set slightly higher at the inlet end of the culvert than at the outlet end of the culvert. When the culvert becomes blocked with ice or snow and the water at the islet end of the culvert is as high as the pipe. The end caps of the pipe are removed. Water flows through the pipe and creates friction. This causes the pipe to heat up and melts the ice around the pipe. Once enough ice and snow has melted around the pipe a channel will form around the pipe through which water can flow. At this point the inlet end of the pipe should be capped and the water inside the pipe allowed to drain out. Then the outlet end of the pipe should be capped .The water flowing around the pipe will eventually melt out the rest of the ice and snow in the culvert thus clearing it.
Patent CA-2303277-A1 (CA)
Inventor: SMITH DOUGLAS H
IPC: C12M1/00
Filed: 1998-09-30
Abstract: Apparatus is disclosed that thermally cycles samples between at least two temperatures. The apparatus operates by impinging fluid jets onto the outer walls of a sample-containing region. Because the impinging fluid jets provide a high heat transfer coefficient between the jet and the sample-containing region, the sample-containing regions are uniformly cycled between the two temperatures. The heat exchange rate between the jets and the sample regions is substantially greater than in the case of laminar flow.
Patent CA-2307974-A1 (CA)
Title: Anti-theft device for office equipment
Inventor: GALANT STEVE N
IPC: E05B73/00
Filed: 2000-05-10
Abstract: An anti-theft device for securing a computer or office equipment component to a work surface. The device is adjustable for use with different sizes of components, and includes a base having first and second sections that can be moved relative to each other. First and second arms extend from the base to receive the equipment component to be secured therebetween. The device includes a generally U-shaped clamping member having an intermediate restraining bar for engaging the office equipment component and first and second parallel arms extending from the restraining member. The first and second parallel arms of the clamping member are telescopically engaged with the first and second arms, respectively, of the base. Locking means associated with the first parallel arms permit the restraining bar to be selectively locked into one of a number of possible positions relative to the base, wherein the equipment component can be clamped between the base and the restraining bar. The widths of the base and clamp member can be adjusted to correspond to the width of the equipment component, and the length of the base can be adjusted to correspond to the length of the component.
Patent CA-2309840-A1 (CA)
Inventor: WITOWSKI NORBERT
IPC: A61J1/10
Filed: 1998-11-16
Abstract: The invention relates to a tank (100) used to administer flowable substances, characterised in that (a) the tank (100) has flexible walls (2 & 3); (b) the walls of the tank are single-pieced or joined to each other, (c) the walls (2 & 3) of the tank form a closed container having at least one opening; (d) the walls of the tank (2 &  3) are partially joined to at least two flat vertical elements (6) which are separated from the walls of the of the tank in the fixed area of said walls (2 & 3); and (e) the opening (12) has one closure (13). At least parts of the walls of the tank (2 & 3) and/or vertical elements (6) are made of composite material and consist of (i) plastic laminate or (ii) at least one plastic laminate and an aluminium laminate whereby said laminates are joined to each other. Preferably, the tank is designed to receive contrast agents.