baber/WOPTO huggingface dataset:
Patent CA-1288088-C (CA)
Title: Treatment of catalyst particles
Inventor: CROUZET PIERRE
IPC: C08F4/64
Filed: 1987-01-19
Granted: 1991-08-27
Abstract: ABSTRACT OF THE DISCLOSURE        The invention relates to processes and apparatus for the elutriation of particles of a Ziegler-Natta type alpha-olefin polymerisation catalyst, based on transition metal compound(s) and preferably also comprising magnesium compounds, by means of an elutriation liquid which is a non-polar liquid, for example a hydrocarbon chemically inert in relation to the catalyst   A preferred process comprises the following stages:    -    preparation of a homogeneous suspension of the catalyst in the elutriation liquid, and -    elutriation of the catalyst by means of the suspension and the elutriation liquid in one or two elutriation columns (F1), (F2), separating the large and fine catalyst particles respectively.         The apparatus comprises a tank (M2) for the preparation of the catalyst suspension and the elutriation column or columns (F1), (F2).  The invention also relates to elutriation of Ziegler-Natta catalyst particles using a non-polar elutriation liquid and wherein a special polar aprotic additive is employed, for example an organo-metallic compound.
Patent CA-1313509-C (CA)
Title: Formation of hard coatings on cutting edges
Inventor: BACHE ROGER J
IPC: C23C14/34
Filed: 1987-01-19
Granted: 1993-02-09
Abstract: ABSTRACT          Formation of hard coating on cutting  edges A method of making a cutting edge, which comprises coating a substrate cutting edge having a defined cross-sectional geometry, with a material which is harder than the material of the substrate cutting edge by a vapour deposition or sputtering process, if necessary in the presence of gaseous or vaporised molecules of another element or a compound of another element where it is desired to form the coating of a compound, at a pressure of less than 10-2m bar, while simultaneously subjecting the cutting edge to ion bombardment with ions of sufficient mass and energy to cause sputter removal of the deposited material at a rate which is less than the rate of deposition, whereby a cutting edge formed of the deposited material and having a defined cross-sectional geometry and ultimate tip radius, is obtained.
Patent CA-1288086-C (CA)
Title: Dealumination of zeolites
Inventor: CHANG CLARENCE D
IPC: C01B39/38
Filed: 1987-02-23
Granted: 1991-08-27
Abstract: DEALUMINATION OF ZEOLITES       ABSTRACT   Treatment of a zeolite having a SiO2:Al2O3 ratio of at least about 3 with a source of fluoride ions and a source of silicon under hydrolytic conditions including a pH less than 7 results in increase in the SiO2:Al2O3 ratio of the zeolite.
Patent CA-1279507-C (CA)
Inventor: SCHIEL CHRISTIAN
IPC: F16C13/02
Filed: 1987-03-19
Granted: 1991-01-29
Abstract: P 4289                                     J.M. Voith GmbH Reference:  "External Stroke No. II"       Heidenheim A setting device for adjusting the position of a roll.                             Abstract The invention relates to a setting device for moving a roll into engagement with a mating roll and moving it clear thereof.  On each end of the roll there is a roll trunnion or journal which is borne in a bearing outer part, which is supported in a stationary chair.  The latter is made up of a base plate and a guide plate, which extends along the external end face of the bearing outer part.  The latter has guide claws which fit around the guide plate so that the bearing outer part may be moved along the guide plate.  In the base plate there are two single acting hydraulic pistons for displacing the bearing outer part in one direction.  For displacing the bearing outer part in the other direction an additional hydraulic piston is arranged in the upper part of the guide plate in order to engage the roll trunnion.
Patent CA-1311074-C (CA)
Title: Non-blooming antistats for polymers
Inventor: SUGERMAN GERALD
IPC: C08K5/00
Filed: 1987-05-07
Granted: 1992-12-01
Abstract: Abstract of the Disclosure A process for rendering polymer compositions antistatic and the products of such process are described.  The polymeric material is treated with selected amino and sulfonyl titanates and zirconates.  These latter materials are soluble in the polyolefins, polyesters and polystyrenes and remain stable during the processing of these polymers.  Furthermore, the antistatic agents of the invention do not "bloom" during the polymer processing.
Patent CA-1294185-C (CA)
Title: Device at combine harvesters equipped with rotary straw chopper
Inventor: BENDER ARNE
IPC: A01F12/40
Filed: 1987-07-10
Granted: 1992-01-14
Abstract: ABSTRACT OF THE DISCLOSURE          A device for combine harvesters equipped with impact straw cutters of the kind equipped with a cleaning device for separation of chaff from the grain and which rotary chopper is connected to the straw outlet of the combine harvester, whereby the chaff coming from the cleaning device and being transported by a flow of air is intended to be supplied to the rotary chopper.  The rotary chopper is connected to the straw outlet of the combine harvester.  The purpose of the invention is to provide a device by which the chaff is spread over the entire harvesting breadth of the combine harvester and is also efficiently admixed with the comminuted straw such that a continuous and even distribution can be obtained on the field. This has been solved by designing the rotary chopper as a lateral flow blower which is arranged to create a negative pressure at the inlet of the rotary chopper, and the outlet of the cleaning device is directed obliquely upwards towards the fall-out area o the straw above the inlet of the rotary chopper such that the chaff is mixed with the straw prior to their reaching the rotary chopper and that the flow of air transporting the chaff to the inlet of the rotary chopper is so dimensioned as to have a pressure within the fall-out area of the straw which slightly exceeds the atmospheric pressure.
Patent CA-1291340-C (CA)
Title: Material collection apparatus
Inventor: HOEPFNER THOMAS L
IPC: A01D34/63
Filed: 1987-08-17
Granted: 1991-10-29
Abstract: ABSTRACT OF THE DISCLOSURE          A rotary lawn mower mounted on a tractor is equipped with a blower operable to move grass clippings and loose debris from the mower into collection bags.  The blower has a rotatable impeller located within a housing attached to the side of the mower. A belt and pulley drive connects the horizontal impeller shaft to an upright blade drive shaft of the mower to rotate the impeller concurrently with the grass cutting blades of the mower.  A pair of idler pulleys mounted on one or more supports secured to the housing aligned a single endless belt with the vertical pulley on the impeller drive shaft and change the orientation of the belt from horizontal to vertical and back to horizontal as the belt travels around the pulleys mounted on the impeller and blade shafts.
Patent CA-1320874-C (CA)
Title: Process for the production of laser cathodes
Inventor: TSCHANUN WOLFGANG
IPC: H01S3/038
Filed: 1987-10-19
Granted: 1993-08-03
Abstract: Abstract Process for the production of laser cathodes The process for the production of laser cathodes by means of a vacuum coating procedure provides for a well controlled slow layer growth with the simultaneous presence of the laser gas at a total pressure of up to 5 x 10-4 mbar. This favours the inclusion of laser gas atoms in the cath-ode layer already before the operation of the laser.  With-out interrupting the vacuum, the coated cathode is then moved into a second position and laser gas is introduced under slight pressure against the cathode coating (4) by means of a nozzle (7).  At the same time, a number of dis-charge cycles are initiated via the electrically conduc-tive base (2) for the cathode basic element (1) and an electrode (8) arranged concentrically with respect to the nozzle (7), having the effect of premature sputtering-off causing a levelling of the current density and a further inclusion of inert gas atoms in the Al coating (4).  Fur-thermore, after a number of discharge cycles, a small amount of oxygen may be added, so that an Al2O3 passiva-tion layer is formed still before flooding of the recipient.        The process substantially increases the operating reliability and long-term stability of laser amplifiers and laser oscillators.        (Fig. 2)
Patent CA-1277129-C (CA)
Inventor: HUDSON TOMMY E
IPC: C09K8/80
Filed: 1987-10-20
Granted: 1990-12-04
Abstract: ABSTRACT OF THE DISCLOSURE A pyrolytic carbon coated particle for use in well fracturing and sand control applications comprising: a thermally stable substantially spherical substrate particle (e.g., ceramic composite bead or the like) and a substantially uniform layer of pyrolytically deposited carbon encapsulating said thermally stable substantially spherical substrate particle.  Such carbon coated particles exhibit physical properties superior to materials commonly used in gravel pack and well fracturing operations as well as improved chemical resistance to acids, organics and steam.
Patent CA-1291865-C (CA)
Title: Method of assembling filter press type structure
Inventor: BURGESS PAUL E A
IPC: B01D25/12
Filed: 1987-10-28
Granted: 1991-11-12
Abstract: ABSTRACT           Method of assembling the component parts of a filter press type structure, e.g. the component parts of an electrolytic cell, on a support structure of a pair of support rods, in which the component parts have pairs of jaws to be positioned on the support rods, and in which each pair of jaws is so shaped that one jaw may be positioned on a support rod only when the component part is at an angle to the plane between the support rods, the method comprising positioning a jaw on a support rod and rotating the component part to contact the other jaw with the other support rod.  The method is simple to operate and results in the component parts of the structure being firmly fixed in position, yet it permits ready removal of a component part.
Patent CA-1308002-C (CA)
Inventor: ESCOBAR BENJAMIN A JR
IPC: C23G1/10
Filed: 1988-01-22
Granted: 1992-09-29
Abstract: ABSTRACT            A process for producing copper rod having an improved surface smoothness and substantially no surface oxides, which rod is suitable for drawing or rolling into wire, is disclosed.  The process com-prises the steps of forming a bath of molten pure copper, casting the molten copper into a cast bar, conditioning the bar for hot-rolling, hot-rolling the bar to form a hot-rolled rod, cooling the hot-rolled rod and chemically shaving and pickling the hot-rolled rod.  The chemical shaving and pickling step is performed with a solution containing con-trolled concentrations of sulfuric acid and hydrogen peroxide.  Both the solution and the rod are maintained at elevated temperatures and the duration of the r action is controlled.  The inter-related process variables are regulated so that substantially all of the surface oxides and a desired amount of copper are removed from the surface of the hot-rolled rod.
Patent CA-1305244-C (CA)
Title: Circuit interrupter apparatus with a style saving rating plug
Inventor: MATSKO JOSEPH J
IPC: H02H3/10
Filed: 1988-02-05
Granted: 1992-07-14
Abstract: ABSTRACT OF THE DISCLOSURE         A circuit interrupter includes a circuit arrangement for sampling a conditioned current value and determining operating characteristics related to the current flow through an electrical circuit.  Also included is a circuit arrangement for comparing the operating characteristics to preselectable tripping parameters and for initiating a trip condition when an operating characteristic exceeds a corresponding tripping parameter.  Additionally, a circuit arrangement for establishing a ground fault current limit using a minimum number of components to achieve a wide range of possible settings, is also included.
Patent CA-1291957-C (CA)
Title: Treatment of froth form oil sands hot water recovery process
Inventor: KESSICK MICHAEL A
IPC: C10G1/04
Filed: 1988-02-26
Granted: 1991-11-12
Abstract: Abstract of the Disclosure Solvent-diluted bitumen froths formed in the hot-water process  for the  recovery of bitumen  from  oil sands, either individually or combined, are treated with slaked lime to break the emulsion and to destabilize the clay suspensions.  In this way, a clean separation of a solvent-solution  layer,  an  aqueous  sodium  hydroxide solution layer and a compact clay layer is achieved.
Patent CA-1303084-C (CA)
Inventor: BULL PAUL F
IPC: B32B27/08
Filed: 1988-03-17
Granted: 1992-06-09
Abstract: ABSTRACT       A synthetic sporting surface for tennis courts comprises a laminate of (1) a cushioned porous base layer formed from a matrix of liquid polyurethane polymer mixed with rubber particles;         (2)  a layer of curable liquid polyurethane which seals the porous surface of the base layer;         (3)  an adhesive layer reinforced with non-woven glass fibre cloth; and, (4)  an acrylic top coat which acts as a wear layer. The adhesive layer is comprised of a curable acrylic or polyurethane aqueous latex capable of forming strong chemical bonds between the sealant layer and the acrylic top coat to provide a durable cushioned playing surface.
Patent CA-1284078-C (CA)
Title: Balanced solenoid valves
Inventor: EWING JAMES H
IPC: F16K31/06
Filed: 1988-04-07
Granted: 1991-05-14
Abstract: Abstract A proportional-control solenoid-actuated fluid valve, capable of governing relatively large volumes and rates of flow swiftly and accurately with expenditure of relatively little electrical power, includes a movable valving member positioned by an armature having a substantially frictionless spring suspension, the armature being under influence of a special force-counter-balancer is the form of a bellows proportioned and disposed to exert upon it, automatically, neutralizing forces which are substantially equal and opposite to unavoidable pressure-induced imbalances afflicting the valving member.  The same pressures which tend to unbalance the valve member are impressed upon opposite sides of the bellows, one through an enabling bleed port, and resulting forces developed by the bellows over a defined area are exerted upon the armature mechanically in a counterbalancing sense.
Patent CA-1325252-C (CA)
Title: Branched sensor system
Inventor: KOPPITSCH HEINRICH
IPC: G01R31/08
Filed: 1988-06-02
Granted: 1993-12-14
Abstract: ABSTRACT      A detection and location system, e.g. for liquid leaks, comprising a trunk line sensor cable and a plurality of branch line cables at intermediate points of the trunk cable.  Each of the cables comprises two insulated conductors (31, 32 ... and 41, 42 ...) and two non-insulated conductors (11, 12 ... and 21, 22 ...) e.g. conductive polymer-coated wires, which are not connected to each other in the absence of a leak but which become connected upon occurrence of a leak.  In one embodiment, each of the insulated conductors in the trunk line is continuous and each of the non-insulated conductors is discontinuous at each intermediate point; the branch line conductors are respectively connected to the discontinuous ends of the non-insulated trunk line conductors, and are connected in pairs of one insulated and one non-insulated conductor at the end of each branch.  In another embodiment, in the trunk line, both the non-insulated conductors and one of the insulated conductors are continuous and one of the insulated conductors is discontinuous at each intermediate point; in the branch line, the two insulated conductors are respectively connected to the discontinuous ends of the insulated trunk line conductor at the intermediate point, and to each other at the end of the branch, and the two non-insulated conductors are respectively connected to the non-insulated trunk line conductors but are not otherwise connected.
Patent CA-1334090-C (CA)
Title: Oxidation of alkanes
Inventor: ELLIS PAUL E JR
IPC: B01J27/198
Filed: 1988-06-24
Granted: 1995-01-24
Abstract: Alkanes are oxidized in the liquid phase at relatively low temperature using heteropolyacids or polyoxoanions promoted with azide or certain metals.  Such azide catalysts are also part of the invention.
Patent CA-1303424-C (CA)
Inventor: COULBORN JOHN W
IPC: B61D17/00
Filed: 1988-08-05
Granted: 1992-06-16
Abstract: ABSTRACT             In an end structure for a railway car, said end structure comprising a center stub sill located generally along the longitudinal centerline of the railway car, a side sill at each side of the car extending longitudinally thereof along both sides of the car body in spaced transverse relation to center stub sill for carrying longitudinal loads from one end of the car to the other, and a side sill extension extending diagonally between an end of a respective said side sill and said center stub sill for carrying substantially all of the horizontal, longitudinal loads between said side sill and said center stub sill, wherein the improvement comprises:  each of said side sill extensions having a tapered height which substantially continuously decreases from said side sill to said center stub sill.
Patent CA-1314951-C (CA)
Title: High voltage gas filled pipe type cable
Inventor: SILVER DAVID A
IPC: H02G15/22
Filed: 1988-09-13
Granted: 1993-03-23
Abstract: ABSTRACT OF THE DISCLOSURE A high voltage, gas filled, pipe type electrical cable and method of manufacture thereof.  The cable comprises a plurality of insulated conductors, each conductor having a central gas passageway and being gas permeable.  The conductor is wrapped with tapes impregnated with an insulating oil, and the wrapped tapes are encircled by gas permeable layers and skid wires. Three of such insulated conductors are encircled by a gas impermeable pipe, and the pipe and the conductor passageways are filled with an insulating gas under pressure above atmospheric pressure so that both the interior and exterior surfaces of the wrapped tapes are subjected to such gas.  Preferably, the gas is a mixture of sulfur hexafluoride and nitrogen at a pressure of at least 200 psig.  The tapes are impregnated with the oil and drained before they are wrapped around the conductor so as to provide gaps between the tapes which are substantially filled with the gas.
Patent CA-1312473-C (CA)
Title: Strengthened graphite-metal threaded connection
Inventor: PELTON JOHN F
IPC: F16B33/06
Filed: 1988-10-07
Granted: 1993-01-12
Abstract: STRENGTHENED GRAPHITE-METAL     THREADED CONNECTION               Abstract of the Disclosure The threaded connection between a graphite shaft and a metal shaft, such as is used to drive a rotating nozzle in the refining of aluminum, is strengthened by coating the graphite surface that contact the flange portion of the metal shaft prior to the fastening of said shafts together.  The coating comprises solid material bonded to the graphite surface to form a hard, adherent coating, deposited by coating said graphite surface with a solution or colloidal dispersion of said material and drying said solution or colloidal dispersion to leave said solid material bonded to the graphite surface.  The coating of said graphite shaft serves to greatly strengthen the threaded connection and the ability of said connection to transmit driving torque from the metal shaft to the graphite shaft.
Patent CA-1329604-C (CA)
Inventor: SCHWAB WILFRIED
IPC: A61K31/675
Filed: 1988-10-25
Granted: 1994-05-17
Abstract: ABSTRACT OF THE DISCLOSURE         Pharmaceuticals, phosphorus-containing 2-isoxazolines and isoxazoles  contained therein,  and processes  for  the preparation of these heterocyclic compounds Pharmaceuticals containing or composed of at least one compound of the formula I and/or one of its physiologi-cally  tolerated  salts  where  appropriate,  where  the compounds of the formula I can, where appropriate, be in the  form of pure stereoisomers  or mixtures  thereof; formula I is:                  (I) in which R1 = organic radical or halogen, A = C,C single or C,C double bond, n = 0, 1 or 2, and X and Y = alkyl radical or = -OR2 or -NR2R3 with R2 and R3 = H or optionally substituted aliphatic radical. The pharmaceuticals are suitable for the prophylaxis and/or  treatment  of  diseases  of  the  immune  system, especially  of  tumors,  infections  and/or  autoimmune diseases of the human or animal body and for use as adjuvants for vaccines. Some of the compounds of the formula I are new; the compounds can be prepared by special processes.
Patent CA-1328308-C (CA)
Title: Switched optical network
Inventor: SMITH DAVID W
IPC: H04B10/27
Filed: 1988-11-18
Granted: 1994-04-05
Abstract: ABSTRACT OF THE DISCLOSURE           Signals from transmitter stations are connected to receiver stations by a switched optical network.  To provide a  readily  expandable,  non-blocking  network  for  a  large network,  groups  of  transmitter  signals  are  formed  into distinct optical wavelength multiplexed signals each of which is coupled by an optical fibre bus to one input of each of several optical space switches.   Each receiver station is connected to an optical heterodyne receiver optically coupled to an output of one of the optical space switches.   The required signal from the multiplexer switched to an optical receiver is demultiplexed by combining with the multiplexer an optical source which has been frequency shifted by a frequency shifter.  This is achieved by means of a secondary optical space switch and an optical combiner.  The optical space switches are controlled by a controller to effect the desired connection.
Patent CA-1295130-C (CA)
Title: Doll with simulated hair growth
Inventor: ORENSTEIN HENRY
IPC: A63H3/44
Filed: 1988-12-01
Granted: 1992-02-04
Abstract: Abstract of the Disclosure A toy doll comprises a doll body including a head portion having an aperture in the upper rear portion thereof, a lock of hair in the aperture and an advancing mechanism which is actuatable for advancing the lock of hair from a retracted first position to an extended second position wherein an increased portion of said lock of hair is exposed.       The doll body further comprises first and second arms, and it is constructed so that the first arm is manipulatable for actuating the advancing mechanism and so that the second arm is rotatable for rewinding the advancing mechanism and for simultaneously moving the lock of hair toward the retracted position.
Patent CA-1282828-C (CA)
Inventor: YOSHIOKA TAKEO
IPC: H02H9/04
Filed: 1989-01-19
Granted: 1991-04-09
Abstract: ABSTRACT OF THE DISCLOSURE           A lightning arrester monitor consists of an oxygen gas sensor provided in a lightning arrester having a zinc-oxide-type element made of zinc oxide as the main component thereof, and other oxides added thereto, the oxygen gas sensor measuring the oxygen concentration of the element which increases with degradation thereof. The monitor makes it possible to assess degradation of the zinc-oxide-type element with ease, without requiring any complicated electrical circuit for detecting leakage current.
Patent CA-1315477-C (CA)
Inventor: GRIFFITH RONALD C
IPC: C07C231/00
Filed: 1989-01-20
Granted: 1993-03-30
Abstract: Abstract Compounds of general formula I,                 I wherein Ar1 and Ar2, which may be the same or different, represent phenyl optionally mono-substituted by fluorine, and R, R1, R2, R3 and R4 have the meanings given in the description, and pharmaceutically acceptable acid addition salts thereof, are useful as sedatives and in the treatment of epilepsy.      The compounds are conveniently prepared by amide-forming reactions, and may be administered in the form of compositions comprising a pharmaceutically acceptable adjuvant, diluent or carrier.