baber/WOPTO huggingface dataset:
Patent CA-2092959-C (CA)
Title: Methods and systems for the negative pressure testing of underground storage tanks containing highly vaporous hydrocarbon liquids
Inventor: HORNER JACK R
IPC: G01M3/34
Filed: 1993-03-30
Granted: 1995-12-19
Abstract: A method and system for detecting a leak in a high vapor-evolving hydrocarbon liquid underground storage tank filled incompletely with the liquid, wherein there is a projecting fill pipe connected with the ullage which is filled with hydrocarbon vapor and air.  A vacuum source is connected to the fill pipe for withdrawing the atmosphere of the ullage and imposing a prescribed negative pressure.  While some of the drawn off vapor and much of the air is exhausted to atmosphere, a significant portion of the ullage content is recirculated to build the relative proportion of hydrocarbon vapor to air in the ullage.  The ullage is then isolated from the vacuum source and atmosphere, and allowed to stabilize over a predetermined time period with a reduced rate of hydrocarbon vapor release into the ullage.  The recirculation and stabilization are then repeated to achieve further saturation of the ullage with gasoline vapor and  vacuum is applied to the ullage to reach a predetermined threshold negative pressure in the ullage.  Over a predetermined time period successive negative pressure readings are taken to determine if there is a rate of decay which indicates the existence of a leak in the tank.
Patent CA-2094977-C (CA)
Title: Catalytic/thermal convertor unit
Inventor: LUCAS WALTER P
IPC: F23G7/07
Filed: 1993-04-27
Granted: 2006-09-19
Abstract: An oxidation or converter apparatus for cleansing air contaminated by volatile organic compounds (VOC) in an exothermic reaction includes a first pipe connectable to a source of the VOC contaminated air and a combustion chamber with a burner, an inlet for the VOC contaminated air and an outlet to atmosphere for exhaust, the inlet being connected to the first pipe. A catalytic oxidizer having an inlet for the VOC contaminated air and an outlet to atmosphere for exhaust is also provided along with an air-to-air heat exchanger. The outlet of the catalytic oxidizer is connected to a first inlet of the heat exchanger in order to provide heated exhaust air to one side of the exchanger. A second inlet of the heat exchanger is connected by a suitable conduit to the first pipe. The contaminated air which is preheated in the heat exchanger is carried by a further conduit to the inlet of the combustion chamber. After being further heated in the combustion chamber, it passes along an additional conduit to the inlet of the oxidizer. By the selective use of bypass valves, the unit can operate in either a thermal mode or a catalytic mode.
Patent CA-2113169-C (CA)
Inventor: LANDA BENZION
IPC: G03G15/10
Filed: 1991-11-29
Granted: 2003-05-27
Abstract: Imaging apparatus including a first member having a fast surface having formed thereon a latent electrostatic im-age, the latent electrostatic image including image regions at a fast voltage and background regions at a second voltage; a second member charged to a third voltage intermediate the first and second voltages and having a second surface adapted for resilient engagement with the first surface and a third member adapted for resilient contact with the second surface in a transfer region. The imaging apparatus also includes ap-paratus for supplying liquid toner the transfer region there-by forming on the second surface a thin layer of liquid toner containing a relatively high concentration of charged toner particles and apparatus for developing the latent image by the selective transfer of portions of the layer of liquid toner from the second surface to the first surface.
Patent CA-2113832-C (CA)
Title: Diesel lubricants and methods
Inventor: RIPPLE DAVID E
IPC: C10M159/24
Filed: 1993-05-04
Granted: 2003-03-18
Abstract: A diesel lubricant exhibiting improved ability to minimize undesirable viscosity increases when used in diesel engines is described. More particularly, in accor-dance with the present invention, a diesel lubricant is described which comprises a major amount of an oil of lubricating viscosity and a minor amount, sufficient to minimize undesirable viscosity increases of the lubricant when used in diesel engines, of a composition comprising (A) at least one carboxylic derivative composition produced by reacting at least one substituted succinic acylating agent with at least one amino compound containing at least one -NH- group wherein said acylating agent consists of substituent groups and succinic groups wherein the substit-uent groups are derived from polyalkene characterized by an Mn value of at least about 1200 and an Mw/Mn ratio of at least about 1.5, and wherein said acylating agents are characterized by the presence within their structure of an average of at least about 1.3 succinic groups for each equivalent weight of substituent groups, and (B) at least one basic alkali or alkaline earth metal salt of at least one acidic organic compound having a metal ratio of at least about 2. The composition should have a TBN in the range of about 6 to about 15, with the sucinnic acid derivative contributing about 0.5 to 1.5 TBN to the composition. The alkali or alkaline earth metal salts (detergents) should contribute the rest of the TBN of the composition. TBN is measured by the ASTM D2896 method.      Magnesium should contribute less than about 30% of the total TBN of the composition. The invention also includes methods for operating diesel engines which comprises lubricating said engines during operation with the diesel lubricants of the invention.
Patent CA-2113930-C (CA)
Inventor: RAMPALLI SITARAM
IPC: H01B7/295
Filed: 1994-01-21
Granted: 1997-09-30
Abstract: A radiating air-dielectric coaxial cable for plenum applications comprises an inner conductor; a dielectric spacer around the inner conductor; and a single, continuous, outer conductor surrounding the dielectric spacer in direct contact therewith. The outer conductor has apertures along its length for the passage of electromagnetic radiation; at least one layer of inert, flame-retardant barrier tape wrapped over the outer surface of the outer conductor so as to cover each of the radiating apertures of said outer conductor to prevent the dielectric spacer from flowing out through the radiating apertures when the dielectric material is melted; and a jacket of highly flame-retardant polymer extruded over the wrapped layer of barrier tape.
Patent CA-2115130-C (CA)
Inventor: TUNC DEGER
IPC: C08J7/02
Filed: 1994-02-07
Granted: 2003-12-09
Abstract: A process of purifying and stabilizing a high molecular weight polylactide polymer by contacting solid polymer particles with methyl alcohol and subsequently acetone.
Patent CA-2120998-C (CA)
Inventor: KAJIKAWA YOSHIAKI
IPC: C22C49/06
Filed: 1994-04-11
Granted: 2004-11-30
Abstract: A slide member is made of an aluminum alloy and compositely reinforced at its sliding surface by a reinforcing material. The reinforcing material is a mixture of alumina short fibers consisting of not less than 80 wt.% alumina and the remainder silica and having 5-60 wt.% alpha alumina content, and non-spherical mullite particles consisting of 40-86 wt.% alumina and the remainder silica and having 3-60 microns mean diameter. The volumetric percentages of the alumina short fibers and the mullite particles are 2-12% and 5-25%, respectively, on the basis of the volume of the reinforced portion.
Patent CA-2124863-C (CA)
Title: Slip casting process and apparatus for producing graded materials
Inventor: MARPLE BASIL
IPC: B28B21/08
Filed: 1994-05-18
Granted: 1999-06-29
Abstract: A slip casting process and apparatus for producing parts with graded properties across the thickness of the body of the parts. A number of slips is combined at a varying predetermined ratio and passed continuously through a casting mold between its inlet and outlet.   The process can be carried out under elevated pressure.   The casting mold can be positioned vertically or horizontally.
Patent CA-2127005-C (CA)
Inventor: HIRSOHN PAUL
IPC: H04Q3/58
Filed: 1994-06-29
Granted: 2003-11-04
Abstract: A method for recognizing and releasing unnecessary trunk lines in a private branch exchange telephone system including a plurality of switching nodes, each having a unique node identification number whore each pair of nodes is connected by a plurality of trunk lines, includes steps for (a) compiling a telephone call identifier list containing node identification numbers and an associated trunk call identification number used in defining and connecting a call path between a calling party and a called party, (b) examining a call identifier list at each of the switching nodes for information indicative of redundant node identification numbers, and (c) releasing the unnecessary trunk lines between the redundant node identification numbers.
Patent CA-2128446-C (CA)
Inventor: THALER KUNIBERT
IPC: E04D13/04
Filed: 1994-07-20
Granted: 1997-06-24
Abstract: A roof drain for draining rainwater from a roof. A bell-like strainer is supported by a compression/tension unit including resilient means, which unit is in turn mounted to a drainage sleeve that communicates with a leader.  The strainer is secured to the drainage sleeve by a threaded bolt that passes through bores in the strainer and the compression/tension unit, and engages a nut received by the resilient means.  Tightening the bolt moves the strainer downwardly into a substantially watertight fit with roofing membrane interposed between a skirt of the strainer and a collar on the drainage sleeve.  The resilient means, which may be resilient material, a spring or the like, provides continuous tension between the strainer and the drainage sleeve.
Patent CA-2131190-C (CA)
Inventor: MILESKI WILLIAM J
IPC: C12N5/20
Filed: 1993-02-05
Granted: 2008-08-12
Abstract: Disclosed is a method for treating tissue necrosis (loss) in an animal. Tissue necrosis is treated by providing the subject with an anti-adhesion cell agent capable,of binding an ICAM-1 antigen, a CD18 antigen, an L-selectin agent, a CD44 antigen, a P-selectin antigen, a VCAM-1 antigen, an ICAM-2 antigen, or a fragment thereof. Also provided is a method for preventing thermal-related tissue loss or necrosis, particularly the thermal injury and progressive tissue necrosis which results from a burn injury.  Thermal-related tissue injury surrounding a thermal injury site is inhibited or prevented by providing an animal with an anti-adhesion agent, such as an anti-CD18 antibody, an anti-ICAM-1 antibody, or a mixture or fragment thereof. A method for inhibiting/preventing scarring attendant healing of a thermal injury is also disclosed.
Patent CA-2133610-C (CA)
Title: Additive for use in feed for sows and feed for sows
Inventor: TORIDE YASUHIKO
IPC: A23K20/195
Filed: 1994-10-04
Granted: 1999-02-23
Abstract: A feed additive for improving the breeding efficiency of sows comprises a reduced form of folic acid.  The  oral  administration  of  such  a  feed additive  to  sows  has  been  found  to  increase  the concentration  of  reduced  forms  of  folic  acid  in blood plasma  of  pigs,  thereby  improving  breeding efficiency.
Patent CA-2140021-C (CA)
Inventor: MAKINO YUJI
IPC: A61M13/00
Filed: 1994-05-12
Granted: 2001-09-04
Abstract: The present invention provides an administering device capable of quantitatively spraying a multi-dose of powdered medicine. The multi-dose powdered medicine administering device comprises: a device body (1); a storage chamber (3) detachably provided in the device body, the storage chamber (3) being capable of storing powdered medicine, the amount of which corresponds to a plurality of administering operations; an accommodation chamber (10) capable of accommodating powdered medicine, the amount of which corresponds to a single administering operation; a medicine dispensing rotor (6) movably attached to the device body, the medicine dispensing rotor communicating the accommodation chamber with the storage chamber at a charging position (3a), the medicine dispensing rotor communicating the accommodation chamber with the outside of the device body at an administering position (5a) so that the powdered medicine in the accommodation chamber can be administered; a cap (20) for moving the medicine dispensing rotor between the charging position and the administering position; and a pump means (8) for injecting air into the storage chamber through the accommodation chamber at the charging position so that the powdered medicine in the storage chamber can be stirred, wherein a predetermined quantity of powdered medicine that has been stirred is charged from the storage chamber to the accommodation chamber by the suction force of the pump means and/or gravity.
Patent CA-2140711-C (CA)
Inventor: LESAGE MICHEL
IPC: G01S17/931
Filed: 1995-01-20
Granted: 1999-05-04
Abstract: To prevent a collision between first and second mobiles, such as travelling cranes, on a common movement path, a method implemented  in the  first mobile  entails  measuring  a  first distance between the first mobile and an origin in a fixed system of axes and a second distance between the first and second mobiles. The method comprises the steps of determining a first speed of the first mobile in the system of axes and a second speed of the first mobile relative to the second mobile in order to deduce a third speed of the second mobile in the system of axes, then of estimating a safety margin between the first and second mobiles, then of comparing the safety margin with a threshold to generate a  collision risk  factor,  and finally of deciding on an action at drive motors of the first mobile as a function of the sign of the first, second and third speeds and the collision risk factor.
Patent CA-2146837-C (CA)
Title: Transfer apparatus
Inventor: AKIRA TOSHIRO
IPC: G03B27/53
Filed: 1995-04-11
Granted: 2000-07-25
Abstract: As a negative film 2 having a multiplicity of perforations provided therein at equal intervals is being transferred, its perforations are detected with a detecting means 4 which in turn produces a corresponding pulse signal. The pulse signal is then fed to a controller 5 which in turn calculates the number of clock pulses for each 40 pulses of the pulse signal and determines a transfer distance per clock pulse. Meanwhile, the reference transfer distance is obtained from an interval between the perforations x 40. A difference between the actual transfer distance and the reference transfer distance is calculated and used for controlling the rotating movement of drive rollers 3.
Patent CA-2147555-C (CA)
Inventor: STEPHENS DONALD L
IPC: B60G11/46
Filed: 1995-04-21
Granted: 2004-03-16
Abstract: A suspension system in which a relatively lightweight stiff beam connects the axle to the frame via a connection at one end with a resilient link that allows vertical motion of the end of the stiff beam and transverse motion of the stiff beam to reduce the lateral loads between the axle and the beam and between the beam and the frame rail connection to enable the suspension to be made of fewer and lighter weight components for improved payloads. In the preferred embodiment, the connection between the stiff beam and the frame rail is a C-shape spring allowing the forward connection of a horizontal fore aft link to be moved farther forward to give an increased clearance to the wheel, thereby reducing potential interference between the wheel and the horizontal link and bushing assembly at its forward end.
Patent CA-2151302-C (CA)
Inventor: NAKAGAWA MIKIO
IPC: C08K5/00
Filed: 1995-06-08
Granted: 1999-01-26
Abstract: A crystalline thermoplastic resin composition comprises a rosin acid metallic salt and a crystalilne thermoplastic resin.  Optionally, a compatibilizing agent may also be included.  The rosin acid metallic salt, which acts as a crystal nucleating agent, increases the crystallization rate of the crystalline thermoplastic resin and enables the formation of fine crystals of the resin.          Thus, the crystalline thermoplastic resin composition can crystallize at a high rate, and provide molded articles having excellent mechanical properties and/or optical properties.
Patent CA-2153541-C (CA)
Inventor: PHILLIPS JAMES PATRICK
IPC: H04B1/38
Filed: 1995-07-10
Granted: 1998-05-26
Abstract: An antenna system includes a first antenna (107) positioned on a first device housing portion (103) and a parasitic radiator (108) positioned on a second device housing (102). The housings move relative to one another to collapse the device during a standby mode and extend the device during an active communication mode. The first antenna (107) and the parasitic radiator (108) are positioned on their respective housings such that they are parasitically coupled when the housings are collapsed and are not coupled when the housings are extended.
Patent CA-2155979-C (CA)
Inventor: ASH STEPHEN R
IPC: A61M1/28
Filed: 1994-02-16
Granted: 2003-09-30
Abstract: A foldable peritoneal catheter (10) is provided with a flexible central plenum chamber (36) and a flexible fluted wands (32) or rods (34) that extend outwardly from the plenum chamber (36) and serve as liquid transport means for a dialysate fluid or the like. This type of peritoneal catheter is well suited for chronic peritoneal dialysis.
Patent CA-2164063-C (CA)
Inventor: SUGII TOSHIO
IPC: F02M7/17
Filed: 1995-11-29
Granted: 2001-04-17
Abstract: The position located above the upper surface of fuel in a float chamber is communicated with the position where the sectional area of a suction passage varies or the position in the vicinity of the foregoing position via a negative pressure introduction passage.  The intermediate part of the negative pressure passage is opened or closed by a solenoid valve adapted to be controlled by electronic controlling means.  An opening/closing rate of a solenoid valve is determined by inputting informations from a temperature sensor sensing the atmospheric temperature as well as a pressure sensor sensing the atmospheric pressure into the electronic controlling means.  The float chamber is normally communicated with the atmosphere via an atmosphere passage.  As an altitude becomes high more and more, the valve opening time for the negative pressure introduction passage is elongated and the differential pressure between the float chamber and the suction passage is reduced, causing a quantity of ejected fuel to be reduced.  In addition, as the atmospheric temperature becomes high more and more, the valve opening time for the negative pressure introduction passage is elongated and the differential pressure between the float chamber and the suction chamber is reduced, and a quantity of ejected fuel is reduced so that the air fuel ratio is corrected by adjusting a quantity of fuel to be ejected.
Patent CA-2165971-C (CA)
Inventor: UHLMANN EUGEN
IPC: C07F9/6558
Filed: 1994-06-29
Granted: 2006-05-30
Abstract: From the compounds of the formula I, (see formula I) in which the substituents R', Y, W and R have the meanings mentioned, in vivo have the action of the active compound radical W together with improved pharmacokinetics.
Patent CA-2166218-C (CA)
Inventor: JACKSON ALAN RAYMOND
IPC: C07C19/12
Filed: 1994-07-25
Granted: 2004-06-01
Abstract: L'invention concerne un procédé de préparation de 1,1,1-trichlorotrifluoroéthane dans lequel on soumet à une chloration le 1,1-dichloro-2,2,2-trifluoroéthane par mise en contact du 1,1-dichloro-2,2,2-trifluoroéthane avec du chlore à l'intérieur d'une cuve de réaction. L'invention est caractérisée par le fait que le procédé est mis en application en phase liquide en présence d'un initiateur chimique à radicaux libres sous une pression de 1 à 20 bars et à une température située dans une plage de 50 à 120  DEG C, et que le produit est séparé du mélange réactionnel par distillation fractionnelle. Le produit est efficace dans la production d'insecticides.
Patent CA-2169244-C (CA)
Title: Chocolate composition
Inventor: GONZE MICHEL HENRI ANDRE
IPC: A23L27/30
Filed: 1996-02-09
Granted: 2005-12-20
Abstract: The present invention discloses a chocolate composition. The composition is characterised in that the normal sugar is replaced with a mixture of sugar alcohols. The mixture consists of erythritol and maltitol in such a ratio that the cooling effect of erythritol is considerably reduced.
Patent CA-2180610-C (CA)
Inventor: BARRIOS RICHARD C
IPC: B61L5/18
Filed: 1996-07-05
Granted: 1998-10-20
Abstract: A supporting truss for use in a railroad cantilever signal structure, in which the cantilever signal structure has an elongated vertical mast that is secured to the ground at one end and has an arm assembly extending outward from the mast at an opposite end. The truss has an upper longitudinal beam that is secured at one end to and extends outward substantially perpendicular from the mast. The truss also has first and second lower longitudinal beams that extend outward from and are secured at respective first ends to the mast. The first and second longitudinal beams are spacedly positioned below the upper longitudinal beam, and are parallel to one another and are perpendicular to the mast. The truss further has a plurality of transverse support beams that are each affixed at one end to the first lower longitudinal beam and at an opposite end to the second lower longitudinal beam. Further, the truss has a plurality of connecting beams are that are each affixed at one end to the upper longitudinal beam and at an opposite end to a respective transverse support beam.
Patent CA-2180964-C (CA)
Inventor: SUMMER SUSAN KASEN
IPC: G02B27/22
Filed: 1995-01-13
Granted: 2000-07-18
Abstract: Image compositing apparatus and methodology for the creation, in a defined volume of three-dimensional space, of a composite organization of plural images/visual phenomena, including at least one projected real image (104), displayed in formats including (a) front-to-rear, (b) side-by-side and (c) overlapping and intersecting, adjacency. The apparatus incorporates different unique arrangements of visual sources (110, 112), and optical elements including concave refloc-tors (114), beam splitters (116) and image-forming/image transmissive scrim screen structures (334). In one important modification of the system, which does not necessarily re-quire compositing, a projected real image is derived from an image-producing data stream containing three-dimensional image cues selected from the group consisting of shading occlusion, perspective, motion parallax, size vs. depth, light (chroma value) vs. depth and definition vs. depth. In a fur-ther important modification of the invention, a system (620) is proposed which allows a viewer/user to interact directly with a projected real image, in a manner allowing the ma-nipulation of one or more characteristics or aspects of the image.
Patent CA-2181324-C (CA)
Inventor: TSUKAGOSHI IKUO
IPC: H04N5/445
Filed: 1996-07-16
Granted: 2005-06-28
Abstract: Recherche de flux de données multiples effectuée par encodage d'une diffusion vidéo dans plusieurs types de flux de données, notamment des données vidéo, audio et de sous-titres. Des adresses sont générées pour chacun des flux de données pointant vers une position du flux de données à stocker sur un support d'enregistrement. Ces adresses sont stockées dans des zones du support d'enregistrement réservées par type de flux de données de sorte que l'emplacement de tout évènement représenté par des données dans un flux de données puisse être obtenu par localisation des flux de données du même type que celui des données à localiser. Une mémoire lisible par ordinateur ordonne à un ordinateur de stocker ces adresses et de décoder des flux de données à ces adresses qui correspondent au type de flux de données à rechercher. Les flux de données qui sont du type à rechercher sont décodés et l'évènement à rechercher est trouvé dans ces flux de données décodés.