baber/WOPTO huggingface dataset:
Patent CA-1258180-A (CA)
Title: Leaching process of zinc and iron containing sulphides
Inventor: ANDRE JEAN A A
IPC: C22B19/20
Filed: 1985-05-23
Granted: 1989-08-08
Abstract: The extraction of zinc and copper and the recovery of precious metals from sulphurous zinciferous materials, also containing iron, becomes possible when these are treated by leaching under pressure in two stages, by judiciously controlling the relative quantities of sulphurous materials and acid.
Patent CA-1251325-A (CA)
Inventor: ECKERSON RICHARD L
IPC: A01K97/00
Filed: 1985-05-24
Granted: 1989-03-21
Abstract: A FISHING LURE RETRIEVER                Abstract of the Disclosure A fishing lure retriever for disengaging a lure with fish hooks from an obstacle comprising a heavy main body in the form of a sphere, a fishing line guide extending from the main body and engageable by the fishing line for guiding the main body along the fishing line, a handling line attached to the body at a point spaced from the guide, and a hook engaging body extending outwardly from said main body at a point spaced from said guide and the attachment of the handling line.  The hook engaging body defines a surface extending radially outwardly from the main body such that when the fish lure is lodged in an obstruction, the retriever is first engaged with the fishing line by engaging the guide with the fishing line, the handling line is then utilized to guide the retriever under the weight of the main body down-wardly along the fishing line and when the main body approaches the fishing lure it applies a force tending to dislodge the fishing lure from the obstruction and to move the hook engag-ing body into engagement with the hooks of the fish lure so that the fish lure can be retrieved by lifting the handling line.
Patent CA-1248975-A (CA)
Inventor: BOECKER WOLFGANG D G
IPC: C04B35/565
Filed: 1985-05-31
Granted: 1989-01-17
Abstract: SINTERED SILICON CARBIDE/CARBON COMPOSITE CERAMIC BODY HAVING ULTRAFINE GRAIN MICROSTRUCTURE                            ABSTRACT Sintered silicon carbide/carbon composite ceramic body having a homogeneous very fine grain microstructure with at least 50 percent of its silicon carbide grains having a size not exceeding about 5 microns and an aspect ratio less than about 3, with graphite grains having an average size not exceeding that of the silicon carbide grains uniformly dispersed throughout the matrix of silicon carbide and having a density of at least 75 percent of theoretical can be made by firing of an infiltrated, microporous shaped green body having prior to infiltration a density of at least about 45 percent of theoretical, the shaped green body being infiltrated with an organic material which can be coked at elevated temperatures to form carbon, a sintering aid selected from the group consisting of aluminum, beryllium or boron or compounds containing any one or more of these or a mixture of any of the foregoing elements or compounds, silicon carbide having a surface area of from about 5 to about 100 square meters/gram and, optionally, a temporary binder at a sintering temperature of from about 1900°C to about 2300°C in an inert atmosphere or vacuum. The process for making such pressureless-sintered composite bodies is relatively undemanding of exact temperature/time control during sintering.  Certain embodiments of such composite sintered bodies may be electrical-discharge machined.  Fully dense composite bodies exhibiting no open porosity may be formed.
Patent CA-1234497-A (CA)
Inventor: SOLOMON FRED D
IPC: F03G6/00
Filed: 1985-06-03
Granted: 1988-03-29
Abstract: Abstract of the Disclosure An apparatus for converting low level thermal radiation into mechanical work.  The apparatus incorporates a collector (11) to receive and concentrate low level thermal energy to generate a pressure by vaporizing a working fluid.  An expansible chamber (70), having at least one movable wall, defined by a diaphragm (54), is selec-tively in fluid communication with the collector (11).  A movable piston (61) is operatively associated with the movable wall of the expansible chamber (70).  A connecting rod (71) is secured at one end to the movable piston (61); the other end of the connecting rod (71) is suitable for connecting to a mechanical load.  A valve spool (73), slidably associated about the surface of the connecting rod (71) effects fluid communication of the expansible chamber (70) alternately with the collector (11) and an exhaust chamber (124), the latter having a pressure substantially less than the work presure of the collector (11).  A com-pressor (106) receives working fluid from the exhaust chamber (124) and supplies it to the collector (11).
Patent CA-1243657-A (CA)
Inventor: FUJITA MASAHITO
IPC: C08F10/00
Filed: 1985-06-13
Granted: 1988-10-25
Abstract: ABSTRACT OF THE DISCLOSURE        A catalyst component for polymerization of olefins which is prepared by contacting a product obtained by contacting (A) a mag-nesium alkoxide, (B) a silicon compound having the hydrogen-silicon bond, and (C) a titanium compound with one another, with (D) (a) a hydrocarbon, (b) a halogenated hydrocarbon, and/or (c) a halide of an element selected from the elements of Groups IIIa, IVa, and Va of the Periodic Table.
Patent CA-1226122-A (CA)
Title: Thermally stable mobility control reagents for harsh  environment reservoirs
Inventor: RYLES RODERICK G
IPC: E21B43/22
Filed: 1985-06-19
Granted: 1987-09-01
Abstract: THERMALLY STABLE MOBILITY CONTROL REAGENTS      FOR HARSH ENVIRONMENT RESERVOIRS             ABSTRACT       Polymers of 2-acrylamido-2-methylpropane sulfonic acid or its salts are used to maintain the viscosity or aqueous solutions thereof in the presence of divalent salt contain-ing-waters during the enhanced recovery of petroleum from sub-terranean petroleum-bearing deposits.
Patent CA-1241244-A (CA)
Inventor: MARTENS ALAN
IPC: F22B35/00
Filed: 1985-06-21
Granted: 1988-08-30
Abstract: ABSTRACT OF THE DISCLOSURE         A coupling controller opens a dump valve at the outlet of a heat recovery steam generator when such genera-tor is to be coupled to another generator being in opera-tion  with a  steam  turbine  on a  common  header.   The controller gradually permits pressure build-up until the pressure at the outlet of the new generator matches the pressure behind the header.  The controller also responds to critical conditions in the super-heater as well as in the high pressure drum of the generator in the operation.
Patent CA-1249748-A (CA)
Inventor: CLAUSEN EARL W
IPC: A61M60/827
Filed: 1985-07-05
Granted: 1989-02-07
Abstract: CENTRIFUGAL BLOOD PUMP WITH TAPERED SHAFT SEAL             ABSTRACT OF THE DISCLOSURE          A centrifugal blood pump      has a tapered seal      between a pump housing wall      and a hub of an impeller      which provides a fluid tight seal  interface       surrounding a drive  shaft which  is  connected  to the  impeller       and which extends  through  the  pump  housing  wall   .   The tapered  seal        has  a  maximum  radial  dimension adjacent  to the  wall        and  a  minimum  radial dimension adjacent the hub       so that air bubbles (which  seek  the  smallest  shaft  diameter)  will  not insulate  the  seal  interface       edges  from  fluid flow.    The   seal   interface       ,   which   is perpendicular  to  the  drive  shaft        axis, is located in a high flow area between the wall      and the hub   to increase cooling effects.
Patent CA-1239104-A (CA)
Title: Method for the purification of lpf-ha
Inventor: GINNAGA AKIHIRO
IPC: A61K39/00
Filed: 1985-07-18
Granted: 1988-07-12
Abstract: Abstract:   The invention provides an improved method for the purification of LPF-HA (leucocytosis promoting factor hemagglutinin) on an industrial scale.  The method com-prises contacting a LPF-HA-containing solution from the culture media of Bordetella pertussis with a cellulose sulfate gel, a crosslinked polysaccharide sulfate gel, or a polysaccharide gel chemically bound with dextran sulfate, thereby adsorbing the LPF-HA on the gel, and then eluting the LPF-HA from the gel.  The method can give a highly purified LPF-HA which does not contain any other proteins, lipids, saccharides, etc. nor undesirable endotoxins, and hence can be used for producing various reagents, medicines and pertussis vaccines.
Patent CA-1251224-A (CA)
Inventor: PETZOW GUNTER
IPC: C04B35/56
Filed: 1985-09-25
Granted: 1989-03-14
Abstract: ABSTRACT OF THE INVENTION         A process for the preparation of materials and molded articles based on boron carbide/transition metal boride consisting of intimately contacting finely particulate boron carbide with boron and transition metal carbides, and hot pressing the powder obtained to produce molded articles.         Also disclosed are molded articles of powder metallurgical compounds having a content of 66 - 85 volume percent of boron carbide and, 34 - 15 volume percent of transition metal boride.
Patent CA-1259667-A (CA)
Inventor: ANGELBECK ROLF
IPC: B01J3/00
Filed: 1986-01-14
Granted: 1989-09-19
Abstract: ABSTRACT OF THE DISCLOSURE        A pressure-tight vacuum chamber for an electron beam engraving machine for accepting printing cylinders during engraving in the engraving machine, characterized by a vacuum hood being secured on a lower part in a vacuum-tight manner and having a loading in the upper part closed by a cover and an arrangement for lifting the cover from the opening and moving it along the outer circumference of the hood to an open position to allow removing and loading printing cylinders and forms into the engraving machine.          The arrangement for lifting and conveying preferably includes a pair of arcuate rail segments at each end of the loading opening with one of the segments being pivotally mounted to move from a lower position with the cover in the closed position to an upper position to form a conveying path which lifts the cover out of the opening and allows the cover to be conveyed to the open position.
Patent CA-1260794-A (CA)
Inventor: NARULA DIPAK
IPC: A61Q15/00
Filed: 1986-02-20
Granted: 1989-09-26
Abstract: BI-MODAL SILICONE EMULSIONS, SILICONE       EMULSIFICATION PROCESS AND EMULSIONS THEREFROM                         ABSTRACT           Silicone-in-water emulsions are prepared wherein the silicone phase is bi-modal and contains at least 25 percent volatile silicone and at least 1 percent high viscosity silicone fluid.  The silicone emulsions are particularly useful in skin care compositions.  The silicone-in-water emulsions are prepared by a process which is useful to emulsify any high viscosity silicone or mixture of silicones having a viscosity of less than 50 pascal-seconds.  The process involves the formation of a rough emulsion followed by the use of low shear, preferably at about room temperature to form a stable emulsion.
Patent CA-1270895-A (CA)
Inventor: CULLUM DOUGLAS G
IPC: H01J29/74
Filed: 1986-05-22
Granted: 1990-06-26
Abstract: CONDUCTIVE COATED SEMICONDUCTOR ELECTROSTATIC DEFLECTION PLATES                      ABSTRACT    An  electrostatic  deflection  plate  for  charged particle  beam  systems   is   formed  of  a  planar semiconductive substrate having a conductive region at the  substrate  surface.   The  conductive  region  is diffused or implanted into the body of the substrate, or one or more conductive lavers are deposited upon the  substrate  surface.   The  substrate  material  is preferably  silicon  and  the  diffused  or  implanted region is formed of a nonmagnetic, nonoxidizable metal such as gold or platinum.  The deposited conductive region may be formed of a single layer of these or similar metals,  one  or more  conductive  underlayers with a nonmagnetic, nonoxidizable overlayer, a single or multilayer structure with a conductive oxide on the outermost layer, or a metallo-organic compound which forms a conductive layer during following heat treat-ment.   The  deflection  plates  are  fabricated  using conventional semiconductor processes and form durable structures which minimize eddy current effects.
Patent CA-1252994-A (CA)
Inventor: LANG RUEDIGER
IPC: A01K1/015
Filed: 1986-06-09
Granted: 1989-04-25
Abstract: ABSTRACT        The  invention  provides  animal litter  comprising  a porous,   odour-preventing  material  with  a  clearly  defined pH-value,  characterized  in  that  the  pH-value  of  the  porous inorganic   material   in   aqueous   suspension   is   between approximately 7 and 9, preferably 7.5 and 8.5, that the porous inorganic material has a zinc content of 0.5 to 1.5 by weight and  that  the  water-soluble  zinc  proportion  of  the porous inorganic  material  is  1.0  to  100  ppm.   The invention  also provides processes for the production thereof.
Patent CA-1268040-A (CA)
Inventor: COOPER WARREN
IPC: A01K97/01
Filed: 1986-07-04
Granted: 1990-04-24
Abstract: ABSTRACT     There is described a semi-automatic fishing apparatus for retaining a baited fishing rod in an inclined, flexed configuration wherein it may be automatically released to an unflexed position in response to tensioning of the fishing line, as for example, by acceptance of the bait by a fish, so as to set the hook in the fish.  The apparatus features an elongated inclined base member to which the fishing rod handle is secured at an acute angle to one end and to which the tip of the fishing rod is retained at the opposite other end below the plane of the base member in the flexed configuration through the agency of a latching device.  The latching device is tripped directly by the downward movement of the line which line simply overlies the tripping mechanism without the need for complicated threading of the line through the tripping mechanism as in prior art devices.  The simplicity of this arrangement facilitates setting the apparatus under arctic conditions where the hands of the operator may remain gloved during the setting operation.
Patent CA-1260488-A (CA)
Inventor: HENDERSON ALEXANDER M
IPC: A61L24/04
Filed: 1986-07-07
Granted: 1989-09-26
Abstract: ABSTRACT         The triglyceride castor oil is reacted with the lactones glycolide and/or lactide in such a manner as to pro-duce resins with properties which range from oils to waxes at room temperature.  The waxes may be used directly as syn-thetic absorbable haemostatic agents for the control of osseous haemorrhage.  A biocompatible powder such as calcium stearate may also be mixed with the copolyester resins to produce a wax useful in the stated role.  Water soluble bio-compatible components such as dextran may also be added.  The preferred haemostatic agent is a 50/50 w/w mixture of calcium stearate powder and resin with a glycolide:castor oil molar ratio of 6:1 with approximately 80% of the glycolide present as a polymeric solid which melts above room temperature.
Patent CA-1269122-A (CA)
Inventor: MODDEJONGE ALBERTUS
IPC: B62D63/06
Filed: 1986-07-22
Granted: 1990-05-15
Abstract: A B S T R A C T     In a folding  trailer comprising at least a base,  two wheels connected to  said base  by a  wheel suspension,  and a shaft for coupling  to a  tractive vehicle,  said base  comprises a central part  at the  point of  said wheels  and a  front and rear part each of which can be moved relative to the  central part between  a position  for use  in which  they lie  in one plane with said central part  and a folded position in  which they  lie  parallel  to  each  other and transversely to said central part. Said wheel suspension is given a form such that said wheels can be  accommodated within the space  degined in the folded state by said central part and the front and  rear base parts.
Patent CA-1248567-A (CA)
Inventor: KISER DAVID G
IPC: B66C1/48
Filed: 1986-07-29
Granted: 1989-01-10
Abstract: ABSTRACT OF THE DISCLOSURE   A coil edge protecting coil lifter and insert is claimed. The insert mounts within a cavity through an aperture in the front wall of each lifter arm of the coil lifter. The edges of a coil contact with a protruding portion of an endless belt which extends through the aperture and outwardly beyond each front wall. A low-friction wear plate atop a backing plate is positioned behind the endless belt and causes the belt to protrude outwardly. The endless belt can be made to additionally protrude through an aperture in the rear wall of each lifter arm.
Patent CA-1265775-A (CA)
Inventor: GARCES JUAN M
IPC: B01J23/00
Filed: 1986-08-20
Granted: 1990-02-13
Abstract: ABSTRACT     An improved alkaline catalyst which is especially useful in the preparation of alpha-al-kenyl aromatic compounds, such as p-isopropenyl-phenol, via the cleavage of cleavable organic com-pounds, e.g., dihydroxydiaryl alkanes such as bis-phenol A.
Patent CA-1272009-A (CA)
Inventor: PIELET HOWARD M
IPC: B22D11/07
Filed: 1986-09-05
Granted: 1990-07-31
Abstract: ABSTRACT            "METHOD FOR PREVENTING MOLD EXPLOSIONS DURING CONTINUOUS CASTING OF FREE MACHINING STEELS"           Molten steel containing lead and/or bismuth is continuously cast without explosions in the casting mold.  The mold has sidewalls whose interior surface is coated with a non-organic lubricant which is not violently reactive thermally or chemically, under the conditions of continuous casting existing within the mold, to produce explosions, and does not breakdown under those conditions to produce a compound which is explosive under those conditions.  Conventional petroleum-base lubricants for the continuous casting of molten steel are excluded.
Patent CA-1272936-A (CA)
Inventor: SCHEFFEL GARY W
IPC: F16K15/02
Filed: 1986-12-30
Granted: 1990-08-21
Abstract: CHECK VALVE                 Abstract of the Disclosure A poppet check valve comprising mating body forming sections which define a valve chamber having a cylindrical inner wall.  A generally cylindrical inlet passage connects axially with the valve chamber and a shoulder at the juncture between the inlet passage and the chamber defines an annular valve seat.  Positioned in the chamber and extending transversely thereof is a relatively thin disk-like valve element.  The valve element has a generally circular imperforate central section of a diameter greater than the diameter of the inlet passage hut less than the diameter of the valve chamber.  A plurality of legs extend radially from the periphery of the central section into sliding engagement with the inner wall of the valve chamber.  A circular seal element is joined to one side of the central section at a location inwardly of its outer periphery to extend axially toward the valve seat.  The valve element is maintained under a bias toward the seat by a coil spring mounted in the valve chamber.  Positioned between the spring and the valve element is a stop member including a plurality of radially spaced, axially extending force applying elements for engaging the central section of the valve element on the side opposite the seal element,  The stop also includes guide surfaces extending radially outwardly of the force applying elements into sliding engagement with the wall of the valve chamber at a location axially spaced from the valve element.
Patent CA-1260144-A (CA)
Inventor: KREUZER MANFRED
IPC: H03M1/58
Filed: 1987-02-02
Granted: 1989-09-26
Abstract: TITLE OF THE INVENTION          METHOD AND CIRCUIT ARRANGEMENT FOR CONVERTING A MEASURED VOLTAGE INTO A DIGITAL VALUE          ABSTRACT OF THE DISCLOSURE          A measured voltage is converted into a digital value according to the follow-up principle.  A compensation signal is added to the measuring signal so that the mean value of both signals becomes zero.  The compensation signal is formed from at least two auxiliary compensation values which are each a square wave signal having a fixed frequency and a keying ratio which is adjustable independently of the other square wave voltage. The keying ratios are varied or adjusted so that the compensation signal compensates the measured signal.  In order to achieve this the value deviating from zero of the sum of the measured signal and the compensation signal is integrated, converted into digital values, and supplied to a PI-or PID-control circuit which controls in a closed loop manner the keying ratios of the square wave signals.  The I-value of the PI- or PID-control circuit serves as a measure of the measured voltage.
Patent CA-1267704-A (CA)
Inventor: MACDOUGALL FREDERICK W
IPC: H01G2/14
Filed: 1987-03-20
Granted: 1990-04-10
Abstract: Abstract of the Disclosure A capacitor is electrically disabled to limit internal pressure buildup by attaching its electrical terminals to a first wall portion that bulges in a predetermined direction under internal pressure, providing electrical connections between the terminals and the capacitive element, and associating with a second wall portion (that does not move in the predetermined direction under internal pressure) a disconnect means such that when the first wall portion bulges, the terminals exert a force in the predetermined direction on the connections, which are then severed by a resisting force exerted by the disconnect means.         In another aspect, reconnection is prevented by having each electrical terminal connected by a conductor via a predefined pathway to the capacitive element, and providing means for blocking the pathway following disconnection.
Patent CA-1271237-A (CA)
Inventor: MURAKAMI YOSHIKAZU
IPC: H01P1/218
Filed: 1987-06-30
Granted: 1990-07-03
Abstract: ABSTRACT OF THE DISCLOSURE           A ferromagnetic resonance device is disclosed which utilize the perpendicular resonance of ferrimagnetic YIG thin film operable under a D.C. bias magnetic field perpendicular to a major surface of the YIG thin film element.  By making the YIG thin film to have a major surface thereof (100) crystal plane of YIG or (111) crystal plane of a substituted YIG having reduced Ku value, lower limit of resonance frequency is extremely lowered.  Thus wide range variable filter device can be obtained.
Patent CA-1271408-A (CA)
Inventor: WARD RICHARD M
IPC: E21B43/1185
Filed: 1987-08-10
Granted: 1990-07-10
Abstract: METHOD AND APPARATUS FOR FIRING  BOREHOLE PERFORATING APPARATUS            Abstract of the Disclosure Method and apparatus for firing perforating apparatus in a borehole.  A pressure actuated firing assembly is run into the borehole on the end of a cable and latched onto a perforating apparatus.  The cable is removed and pressure is applied to the tubing annulus. At a predetermined pressure the firing assembly is armed.  After arming pressure is released from the tubing annulus during a time delay period before the firing assembly impacts a percussion firing head to thereby detonate the perforating apparatus.
Patent CA-1243885-A (CA)
Inventor: ROTH JAMES E
IPC: F24F13/075
Filed: 1987-08-21
Granted: 1988-11-01
Abstract: CEILING DISTRIBUTOR DUCT ASSEMBLY   FOR ROOFTOP AIR CONDITIONERS                          Abstract A low profile ceiling duct assembly to be used with rooftop air conditioners.  The unit combines an octagonal sheet metal ceiling plate which provides the upper portion of a plenum chamber; this extending into the roof space above a ceiling opening.  The lower plenum portion is provided by the molded plastic octagonal air distributor box, mounted against the edges of the plate and ex-tending into the room space sufficiently to afford air flow side-wardly outward from the plenum.  The air distributor box has outlet grilles at alternate sides of the octagon.  They discharge air in four directions along the ceiling line while return air is drawn centrally upward.
Patent CA-1246987-A (CA)
Inventor: RINGGENBERG PAUL D
IPC: E21B47/06
Filed: 1987-09-22
Granted: 1988-12-20
Abstract: ABSTRACT     There is described a tool  for use in a testing string  disposed  in  a  well  bore.   The  tool  comprises  a tubular  housing  defining  a  longitudinal  tool  bore;  a valve  including  a  tool  bore  closure  valve  disposed  in the  housing;  an  operating  device,  including  a  mandrel, adapted to selectively open and close the tool bore closure valve  in  response  to  sequential  changes  in  pressure proximate  the  tool  in  the  well  bore;  and  a  ratchet associated with the mandrel for controlling  the selective opening  and  closure  of  the  tool  bore  closure  pursuant to a program.