baber/WOPTO huggingface dataset:
Patent CA-2056885-A1 (CA)
Title: Sand control agent and process
Inventor: SHU PAUL
IPC: E21B43/02
Filed: 1991-12-03
Abstract: F-6020-L(PAC) ABSTRACT OF THE INVENTION A method for forming a gravel pack in a washed-cut interval is provided where a borehole penetrates an unconsolidated or loosely consolidated oil or gas reservoir which is likely to introduce substantial amounts of sand into the borehole.  After perforating the borehole's casing at a washed-out interval of the formation, sand is introduced into the interval.  Afterwards, an aqueous solution of potassium silicate is injected into said interval.  Thereafter, an alcoholic solution of hydrated calcium chloride is injected into the interval.  A permeability retaining calcium silicate cement is formed in the interval thereby making a gravel pack. Injection of the potassium silicate and hydrated calcium chloride solutions is continued until the porosity of the interval has been reduced by the calcium silicate cement to an extent sufficient to exclude formation fines and sand.
Patent CA-2059711-A1 (CA)
Title: Ethylene oxide catalyst and process
Inventor: BUFFUM JOHN E
IPC: B01J23/00
Filed: 1992-01-20
Abstract: The invention relates to ethylene oxide catalysts containing silver, alkali metal promoters, rhenium promoters and optionally rhenium co-promoters selected from sulfur, molybdenum, tungsten, chromium and mixtures thereof supported on a carrier consisting of at least 85 percent by weight of alpha alumina, from 0.05 to 6 percent by weight (measured as the oxide) of an added alkaline earth metal in the form of an oxide, from 0.01 to 5 percent by weight (measured as the dioxide) of added silicon in the form of an oxide and from zero to 10 percent by weight (measured as the dioxide) of added zirconium in the form of an oxide. The invention also relates to an ethylene oxide process using the above catalyst.
Patent CA-2066352-A1 (CA)
Inventor: SCHLAPFER JOHANNES F
IPC: A61B17/64
Filed: 1992-04-16
Abstract: The connection device for adjustable connection of a first with a second structural element, particularly tubes or rods, for a setting device, has an external component with a cylindrical hole and two internal components inserted into the hole so that they can be slid axially and rotatably, each of which said internal components has through openings crossways to the axial direction of the components to hold a structural element.  By means of loading means, designed as a nut/screw connection, the internal component is pushed axially to the external component and thereby grips the inserted structural elements.  A recess in the internal component effectuates a flexible radial deformation of the internal against the external component, said deformation being created through the inserted structural element, and an additional bonding of the connection device is thereby achieved, which considerably improves the setting.
Patent CA-2066681-A1 (CA)
Title: Blind fastener with large bearing area
Inventor: SADRI SHAHRIAR M
IPC: F16B19/10
Filed: 1990-09-12
Abstract: A blind fastener (10) for fastening workpieces (38, 40) of a crushable or composite material and which provides a blind head (66) having a large bearing area against the adjacent blind side (62) of the workpieces (38, 40) and having a main sleeve (14) with a tapered nose (32) and an expandable sleeve (16) with the expandable sleeve (16) having a primary section (46) and a secondary section (48) with the secondary section (48) having a wall of reduced cross-sectional area and of a lower hardness and/or material strength than the primary section (46) such that after the secondary section (48) has moved past and been expanded over the tapered nose (32) the leading end (58) of the primary section (46) will substantially not move radially inwardly as it is moved over the tapered nose (32) and at a preselected axial or column load the secondary section (48) will substantially fold or collapse to form the blind head (66) with a large bearing area while the primary section (46) will substantially not buckle whereby the pin (12) can provide a visual and/or measurable indication that the fastener (10) has been installed in a proper grip condition.
Patent CA-2066800-A1 (CA)
Title: Expansible fastening device
Inventor: UNDERBRINK JOHN M
IPC: F16B13/04
Filed: 1992-04-22
Abstract: Disclosed is an expansible fastening device (10) for placement in a hole preformed in a base member for use in attaching a component part to the base using a conventional nut (24) and bolt (26). The fastening device includes a fastener body (12) having two body sections (28a and 28b). The body sections when positioned together form a central cavity (30) within the fastener body which encloses and retains the nut and a wedge (14). Each longitudinal section includes a fin (16) which extends longitudinally and projects radially outward from the central region of each body section. Further, each body section includes primary and secondary teeth (18 and 20) which extend circumferentially about the outer surface of the sections. In operation the bolt is engaged with the nut and rotated, pushing the wedge from the fastening device. As the wedge is driven away from the nut, the teeth and Pins are driven into the base member.
Patent CA-2071056-A1 (CA)
Title: Dielectric filter
Inventor: ALA-KOJOLA JOUNI
IPC: H01P1/205
Filed: 1992-06-11
Abstract: DIELECTRIC FILTER            Abstract A ceramic filter can be made small in size by forming one or more strip-line resonators (5) on a side surface (4) of the ceramic resonator,  the  side surface additionally having contact and coupling electrodes which can be formed using the same mask as for the strip-line resonators. The strip-line resonators (5) produce zeros in the transfer function of the filter and thereby increase the attenuation at a desired frequency, e.g. the image frequency.
Patent CA-2071570-A1 (CA)
Title: Helicopter shaft vibration simulator
Inventor: TOUZEAU CHRISTOPHE
IPC: F41A33/00
Filed: 1992-06-18
Abstract: DESCRIPTIVE  ABSTRACT            To carry out operational checks and inspections on equipment such as gunsights (A) for fitting at the top of the shaft supporting the rotor of a helicopter, a vibration simulator is proposed, which is controlled by three linear exciters (14) having parallel axes.  The exciters (14) act on an interface plate (32) carrying a shaft (50) equipped with the gunsight (A) to be tested, at three points forming an equilateral triangle centered on the axis of the shaft.  The movements of the plate (32) are limited to a trans-lation along a vertical axis and to two rotations about two ortho-gonal horizontal axes by an appropriate mechanism (30,26,28,42,44, 46).  A digital computer, sensitive to the signals supplied by accelerometers associated with each of the exciters, controls the latter so as to reconstitute the elementary vibrations of a helicopter shaft.            (fig. 1).     SP 7105.69 GP
Patent CA-2071784-A1 (CA)
Title: Process for the preparation of a dry aggregate for the production of electrodes
Inventor: FISCHER WERNER
IPC: C25C3/20
Filed: 1992-06-22
Abstract: ABSTRACT     The  preparation  of  carbonaceous  dry aggregates  for the production of electrodes requires,  for electrode plants, extensive and expensive silo installations in order for dry substances to be processed and stored in a discrete manner until they are mixed.  For that  purpose,  in relation to known preparation processes  it  is difficult to maintain given  granulometry  lines.   The  invention  proposes  a preparation process which requires a small number of small silos and involves mixing and grading procedures with which granulometries are simple to adjust and can be kept within narrow tolerance ranges.     (Figure 1)
Patent CA-2073647-A1 (CA)
Title: Fractional/decimal/digital calculator
Inventor: CONFORTI JOHN
IPC: G06F15/02
Filed: 1992-07-10
Abstract: ABSTRACT OF THE DISCLOSURE   A Production Pal is provided that permits a user to perform calculations directly upon fractional data. Input to the Production Pal can be either a length expressed as a mixed fraction or rectangular measurements (length x width).  The desired size, original size, and scaling factor (decimal or percent) are variables that can be manipulated.  The circuit architecture employed utilizes a central processor unit, read only memory, random access memory, keyboard, and display.  A fractional computation unit is a unique contribution.  The keyboard contains numerous keys devoted to direct fractional keystroking.  The scaling capabilities are also a unique contribution.
Patent CA-2074508-A1 (CA)
Title: Soluble dietary fiber compositions and method of preparation
Inventor: INGLETT GEORGE E
IPC: A23L7/10
Filed: 1991-11-26
Abstract: Soluble dietary fiber products can be prepared by hydrolyzing an oat or barley substrate with an .alpha.-amylase and recovering the soluble fraction. The recovered material comprises maltodextrins and .beta.-glucans and/or pentosans as the dietary fiber with small amounts of protein lipid and ash. These compositions are colorless and devoid of inherent undesirable flavors, and are, therefore, suitable for use in a variety of foods. By employing centrifugal separation at a temperature substantially below the hydrolysis temperature, the amounts of lipids and proteins in the dietary fiber product can be reduced, thereby further improving product quality.
Patent CA-2074607-A1 (CA)
Inventor: GOTHIER RICHARD J
IPC: B60J7/08
Filed: 1992-07-24
Abstract: A tarp cover system including a pawl (44) and ratchet (26) mechanism for locking a tarp cover (6) in a rolled-up truck-body-uncovered condition, and a brake operating lever that is initially pivoted in one direction  with one hand by the operator to release the pawl from the ratchet to unlock the rolled up cover, and is subsequently pivoted in the same direction  by the same hand to brake the unwinding of the cover as it is spring-biased toward the truck-body-covered condition. To re-cover the truck body, a crank shaft (24) is rotated to rotate the roll in the cover-winding direction against the biasing force of the cover spring, the ratchet mechanism preventing uncontrolled unwinding of the cover.
Patent CA-2075260-A1 (CA)
Title: Threshold determination apparatus and method
Inventor: TICE LEE D
IPC: G08B29/18
Filed: 1992-08-04
Abstract: Abstract of the Disclosure A system and method for establishing an alarm threshold for each member of a plurality of detectors or sensors includes storing a value returned from each detector indicative of a clear air condition.  A second value returned from each detector indicative of a test condition is stored.  The stored values are combined with a common detector characteristic value to produce a unique alarm threshold for each detector.   The determined  alarm  thresholds  can  be  stored  for subsequent use.  Subsequently, a value returned from a detector indicating a current ambient condition can be compared to that detector's previously determined alarm threshold.   If the currently returned value from the detector exceeds the predetermined alarm threshold, an alarm condition can be indicated.
Patent CA-2075897-A1 (CA)
Title: Ag2s membrane for detecting halide ions during the preparation of photographic emulsions
Inventor: ROBERT PHILIPPE G
IPC: G01N27/333
Filed: 1991-02-04
Abstract: Silver sulphide crystalline membrane for the determination of halide ions and method of production. According to the invention, the membrane comprises silver sulphide doped with an ion capable of forming either with Ag+ or X- a salt which presents a much higher degree of insolubility than chemical species in solution.  Preferably, the membrane also contains a hydrophobic compound which is resistant to reagents. The membrane is prepared by co-precipitating silver sulphide and the doping agent, homogenizing with the hydrophobic compound and then pressing. The membrane may be used in an electrode for the detection of halides during the preparation of photographic emulsions.
Patent CA-2077052-A1 (CA)
Inventor: BERKU PHILIP
IPC: H04M9/02
Filed: 1992-08-27
Abstract: INCOMING CALL MANAGER                 Abstract of the Disclosure A  telephone  system  includes  a  service  for transmitting a plurality of different predetermined ringing patterns to a single telephone line, whereby each line can service a like plurality of telecommunication devices, each different ringing pattern being associated with a respective one of the telecommunication devices.   In accordance with the invention, there is provided an apparatus for activating one of  the  devices  upon receipt of the ringing pattern associated with  the  device.    The  apparatus  includes  an identifier for  identifying  the  ringing  pattern  and  a director for directing a signal to activate the one of the devices  upon  identification  of  the  associated  ringing pattern.
Patent CA-2077552-A1 (CA)
Title: Catalytic system for olefin oxidation to carbonyl products
Inventor: GRATE JOHN H
IPC: C07C47/06
Filed: 1991-03-05
Abstract: The present invention provides aqueous catalyst solutions useful for oxidation of olefins to carbonyl products, comprising a palladium catalyst and a polyoxoacid or polyoxoanion oxidant comprising vanadium. It also provides processes for oxidation of olefins to carbonyl products, comprising contacting olefin with the aqueous catalyst solutions of the present invention. It also provides processes for oxidation of olefins to carbonyl products by dioxygen, comprising contacting olefin with the aqueous catalyst solutions of the present invention, and further comprising contacting dioxygen with the aqueous catalyst solutions. In certain aqueous catalyst solutions and related processes of the present invention, the solution has a hydrogen ion concentration greater than 0.10 mole per liter when essentially all of the oxidant is in its oxidized state. In other aqueous catalyst solution and related processes of the present invention, the solution is essentially free of sulfuric acid and sulfate ions.
Patent CA-2077764-A1 (CA)
Title: Antibody to pacap and use thereof
Inventor: SUZUKI NOBUHIRO
IPC: C07K14/435
Filed: 1991-03-15
Abstract: Disclosed are a monoclonal antibody having affinity for PACAP, a partial peptide thereof, a precursor thereof or VIP; a hybridoma cell which produces the above monoclonal antibody; and an immunoassay for assaying PACAP by a competitive method or a sandwich method using the above antibody, whereby PACAP can be specifically detected with high sensitivity.
Patent CA-2078832-A1 (CA)
Inventor: WARNIER JEAN M M
IPC: C08G69/28
Filed: 1992-09-22
Abstract: The invention relates to a process for the production of high-molecular-weight polytetramethylene adipamide from equivalent amounts of 1,4-diaminobutane and adipic acid at lower pressures. By supplying 1,4-diaminobutane at an advanced stage of the polycondensation a first polycondensate is obtained that can be extruded very well and that can be aftercondensed in the solid phase to obtain a product with a high molecular weight within a short time. Because of this a substantial overall gain in time is realised. It even appears to be possible to prepare a first polycondensate with a relative viscosity that is high enough for the polycondensate to be further processed into shaped objects.   The polycondensation can be carried out both in the melt and in solution.   The diaminobutane can be supplied both via the liquid and via the vapour phase.
Patent CA-2081205-A1 (CA)
Title: Steroids which inhibit angiogenesis
Inventor: WILKS JOHN W
IPC: A61P27/02
Filed: 1991-05-23
Abstract: Novel angiostatic .DELTA.4,9(11)-steroids (I), C21-oxygenated steroids (II) and other known steroidal compounds have been found to be useful in treating angiogenesis in mammals who have a need for the same. These steroids are useful in treating diseases of neovascularization such as cancer, diabetes and arthritis.
Patent CA-2082539-A1 (CA)
Title: Lifting apparatus
Inventor: BEATTIE JOHN M
IPC: B66F7/02
Filed: 1992-11-10
Abstract: LIFTING APPARATUS                Abstract of the Disclosure Lifting apparatus for lifting equipment such as utility vehicles (e.g., three-wheeled commercial mowers, four-wheeled vehicles, outdooor power equipment, etc.) for inspection, servicing and repair purposes.  The lifting apparatus includes spaced-apart tool bars and wheel lift means carried by the tool bars.  The wheel lift means are movable along the tool bars and preferably are also movable transversely of the tool bars and are able to engage the wheels of the vehicle even when the vehicle is not aligned parallel to the tool bars.  When the tool bars are raised, the wheel lift means cause the vehicle to be lifted.  The underside of the vehicle is unobstructed to enable access to all portions of the vehicle or its components (e.g., cutting blades, etc.).  The lifting apparatus preferably includes releasable locking members for preventing the tool bars from moving downwardly.
Patent CA-2087795-A1 (CA)
Inventor: HSU BERTRAND D
IPC: F02D19/04
Filed: 1993-01-22
Abstract: ABSTRACT    Apparatus and a method of introducing a primary fuel, which may be a coal water slurry,  and a high combustion auxiliary fuel, which may be a conventional diesel oil, into an internal combustion diesel engine comprises detecting the load conditions of the engine, determining the amount of time prior to the top dead center position of the piston to inject the main fuel  into the combustion chamber,  and determining the relationship of the timing of the injection of the auxiliary fuel into the combustion chamber to achieve a predetermined specific fuel consumption, a predetermined combustion efficiency, and a predetermined peak cylinder firing pressure.
Patent CA-2088328-A1 (CA)
Inventor: BEDICS MICHAEL A
IPC: E04F11/18
Filed: 1993-01-28
Abstract: A corner structure is provided for impact-resisting handrail installations.   The design of the structure is such that the same principal components may be employed in constructing outside corners, inside corners and returns.          The corner structure includes a molded tubular shell of arcuate configuration, for connection to each of two right angularly related straight handrail sections or from one handrail to an adjacent wall.  An internal skeletal support member is mounted within the hollow tubular shell, by means of closure panels secured to and closing the opposite ends of the shell.   The skeletal support member includes an arcuate  central  portion  arranged  in  confronting  and supporting relation to the outwardly facing wall of the shell.  Connecting elements project outward through each of the closure panels for rigid connection to the adjacent straight  handrail  sections.    By  substitution  of  two different internal skeletal supports, the corner structure can be configured for inside and outside corners.   The skeletal   supports   themselves   are   adapted   to   be inexpensively produced by extrusion processes.  Substantial savings in manufacturing costs are realized.
Patent CA-2091977-A1 (CA)
Title: Process for the preparation of 3-substituted-2-azetidinones
Inventor: GASPARSKI CATHERINE M
IPC: C07D403/04
Filed: 1993-03-18
Abstract: x-8662 ABSTRACT           Provided is a process for preparing 3-nucleophile substituted-2-azetidinones by subjecting a N-OR-.beta.-lactam to a nucleophile wherein the 3-substitution is diastereoselective.
Patent CA-2092389-A1 (CA)
Title: Automatic injector
Inventor: VAN DER WAL GILLIS P
IPC: A61M5/32
Filed: 1993-03-24
Abstract: ABSTRACT     The invention relates to an automatic injector, in which, prior to use, different substances which are not allowed to be in contact with each other for a long period of time, can be stored separately, one of said substances being a solid and another being or comprising a solvent for this solid, which solid can be injected as an injection liquid after dissolving it in said solvent; said injector comprising a discharge mechanism, a cartridge assembly, and a front cover, connected to a front portion of said cartridge assembly and provided at its front with a pierceable central area; said cartridge assembly comprising:      -   a  hollow  barrel  having  a  backward  portion  with  a cylindrical inner surface and a front portion, -   a pierceable stopper sealingly connected to the front portion of the barrel and constituting a compartment in front of said stopper for accommodating the solid, -   a piston slidably accommodated in the backward portion of the barrel and constituting a compartment for liquid in said barrel, -   an  injection  needle  longitudinally extending  in  said liquid compartment, and -   a means for centering the distal end of the needle in order to position the needle tip towards the pierceable stopper;  said front cover being capable of rotational movement relative to the outer sleeve, which movement causes  a  backward  movement  of  the  barrel  in  the cartridge container, the piston and the needle bearing thereon remaining in their places, as a result of which the injection needle pierces the pierceable stopper and allows  the  liquid  in the  barrel  to  reach  the  solid compartment through the needle.
Patent CA-2097393-A1 (CA)
Title: Lock for sliding doors and windows
Inventor: ALKHOURY BOULOS
IPC: E05B65/08
Filed: 1993-05-31
Abstract: ABSTRACT      A locking mechanism for securing sliding glass panel units includes an elongate threaded fastener having a threaded forward end section and a rear end section.  This fastener has a knob for rotating the fastener about its central axis, this knob being mounted on the rear end section.  A mounting plate is used to rotatably mount the fastener in a support frame so that the fastener extends through a hole in the plate and the support frame.  An anchor with a threaded aperture is fixedly mounted in the sliding glass panel unit and this aperture is capable of threadedly receiving the forward end section of the fastener.   Preferably a spring is arranged on the fastener between the mounting plate and the knob, this spring acting to bias the fastener away from the anchor.  The mechanism can be used with either sliding glass windows or sliding glass doors.
Patent CA-2097868-A1 (CA)
Title: Method and apparatus for regenerating an aqueous solution containing metal ions and sulphuric acid, and the use of the method
Inventor: STROEDER ULRICH
IPC: C23G1/36
Filed: 1993-06-07
Abstract: ABSTRACT OF THE DISCLOSURE For the purpose of regeneration, an aqueous solution containing metal ions and sulphuric acid, in particular a solution containing zinc ions, iron ions and/or copper ions, is introduced into the catholyte chamber of an electrolytic cell which is subdivided by means of an anion exchange membrane into an anolyte and a catholyte chamber, and the metal ions are cathodically deposited in the catholyte chamber; and sulphate ions migrate out of the catholyte chamber through the anion exchange membrane into the anolyte chamber because of the voltage applied to the electrodes; and in the anolyte chamber, sulphuric acid is generated by means of the protons formed there by anodic hydrolysis, and the concentration of sulphuric acid in the anolyte constantly increases. A pure, highly concentrated sulphuric acid, which can be reused for pickling or extraction processes, is formed in the anolyte chamber. The regeneration is intended to be used as an intermediate step in the regeneration of pickling or extraction solutions without the production of chlorine gas
Patent CA-2098653-A1 (CA)
Inventor: MARIE BRUNO
IPC: B23K26/02
Filed: 1993-06-17
Abstract: ABRÉGÉ DESCRIPTIF L'appareil comprend un générateur de flux d'azote excité du type à décharge couronne fonctionnant à une pression de gaz supérieure à 0,3 x 105 Pa et couplé à un guide d'onde à miroirs constitué par exemple d'un tronçon de galerie chuchotante ayant une direction principale sensiblement parallèle à un passage parallélépipédique d'intercommunication dans lequel débouche au moins un conduit parallélépipédique d'injection de CO2. Application notamment à la découpe de matériaux.