baber/WOPTO huggingface dataset:
Patent CA-1138771-A (CA)
Inventor: CHURCHMAN RONALD K
IPC: E21B34/00
Filed: 1980-09-04
Granted: 1983-01-04
Abstract: ABSTRACT OF THE DISCLOSURE         A drill string safety and kill valve for a string of drill pipe used for drilling wells including a tubular valve body connectible in the drill pipe, a ball valve in the body mounted to rotate between open and closed positions for con-trolling flow through the body, a longitudinally movable tubular ball valve operator in the body connected with the ball valve, a spring biased flapper valve in the ball valve operator mounted to permit downward flow and to close responsive to upward flow for raising the ball valve operator to close the ball valve, a side port provided in the side of the ball valve positioned upwardly when the ball valve is closed for pumping drilling fluids downwardly into the bore of the closed ball valve, and a spring biased lower ball valve seat moved downwardly by down-ward flow of drilling fluid when the ball valve is closed to allow pumping into a well for killing the well after valve closure.  During normal drilling operations drilling fluids are pumped downwardly through the open flapper and ball valves.  A sudden upward pressure surge closes the flapper valve which in turn closes the ball valve.  Heavier drilling fluid for killing the well may then be pumped downwardly through the flapper valve into and around the closed ball valve pushing the lower ball valve seat downwardly away from the ball valve and downwardly between the ball valve and lower seat to enter the formation being drilled.
Patent CA-1133488-A (CA)
Inventor: QUIMBY DANIEL J
IPC: C07D215/50
Filed: 1980-09-19
Granted: 1982-10-12
Abstract: ABSTRACT OF THE DISCLOSURE     2-Trifluoromethyl cinchoninic acids can be pre-pared by reaction of an alkali metal 2-aminophenylglyoxy-late and 1,1,1-trifluoroacetone in a neutral or acid medium.          Preferably reaction is effected by first hydrolyzing isatin, or a substituted isatin, in the presence of an alkali metal hydroxide to produce the alkali metal 2-aminophenylglyoxy-late, and then reacting this intermediate product with 1,1,1-trifluoroacetone without isolating it from the react-ion medium.
Patent CA-1151636-A (CA)
Inventor: EDEN JAMAL S
IPC: B01J23/78
Filed: 1980-10-20
Granted: 1983-08-09
Abstract: ABSTRACT OF THE DISCLOSURE        A catalyst composition is provided having copper chloride deposited on a fluidizable alumina support in which the support has incorporated prior to deposit of copper from 0.5 to 3.05 by weight of at least one alkali metal, alkaline earth metal or rare earth metal.  Such catalyst composition is used as the fluid bed catalyst in the vapor phase reaction of ethylene, oxygen and hydrogen chloride to produce 1,2-dichlo-ethane.  This results in improved yield and efficiency of EDC production based on ethylene and avoids operating problems caused by stickiness in the fluid bed.  Incor-poration of a combination of potassium and barium in the fluidizable alumina support prior to deposit of copper produces an excellent catalyst for the fluid bed ethylene oxyhydrochlorination process in which the vent gases are recycled.
Patent CA-1158917-A (CA)
Title: Method for producing skinless sausages
Inventor: GEISSBUHLER HANS
IPC: A22C17/00
Filed: 1980-11-17
Granted: 1983-12-20
Abstract: ABSTRACT OF THE DISCLOSURE         A device and a method for producing skinless sausages by the use of molds are disclosed.  The molds comprise individual hollow tubes which are open at both ends.  The molds are detachably supported on conv?ying means and conveyed to a filling device where they are filled with sausage meat.  The molds are next brought to a heating device where the sausage meat is heated until the surface is coagulated.  The sausage meat at the open ends is allowed to develop freely.  The molds are then conveyed to an extraction device where the sausages are extracted from the molds and transported for further treatment.  The molds are, in turn, cleaned and returned to the filling device.  By means of the use of molds comprising individual tubes which are detachably supported on the conveying means, great flexibility is assured in the process and in the configuration of the machine.
Patent CA-1155678-A (CA)
Inventor: D AURIA LUIGI
IPC: G02F1/13
Filed: 1980-11-18
Granted: 1983-10-25
Abstract: AN OPTICAL ATTENUATOR PROVIDING     CONTROLLED ATTENUATION     Abstract of the Disclosure The real attenuation produced by the optical attenuator is determined by means of photodetectors which carry out continuous measurements of the intensity of an auxiliary beam before and after it passes through the attenuator element.  Signals which are emitted by the photodetectors and are proportional to the intensity received are transmitted to an electronic processing system which computes and displays the attenuation in decibels.
Patent CA-1160149-A (CA)
Inventor: HENNEQUIN PETRUS J
IPC: E06B9/324
Filed: 1981-01-16
Granted: 1984-01-10
Abstract: TITLE: MECHANISM FOR A ROLLER BLIND            A B S T R A C T A mechanism for the roller of a roller blind, in which a housing has rotatably mounted therein a pulley over which a ball cord, passes, with two pieces of cord hanging down, one from each side of the pulley.  The balls of the ball cord can be engaged in one of two U-shaped slots, to lock the cord.  The U-shaped slots are each formed in a locking element which is designed as a component which can be fastened to the housing in either of two different positions, the locking part being arranged on the locking element in such a way that, in one or other of the two different positions, it always interacts with one or the other of the pieces of cord hanging down.
Patent CA-1177185-A (CA)
Inventor: HUBNER WOLFGANG
IPC: C09K3/10
Filed: 1981-02-13
Granted: 1984-10-30
Abstract: ABSTRACT OF THE DISCLOSURE This invention relates to gels consisting of the reaction product of water-soluble polymers of poly(meth)acrylic acid derivatives and multivalent metal salts, in which connection such gels are characterized by the fact that they consist either of the reaction product of a W/O dispersion of the water-soluble polymers with water-soluble solutions of the metal salts, or of the reaction product of aqueous polymer solutions with W/O emulsions of the metal salts.  Further, the invention relates to a process for the production of the gels, as well as their use to seal or consolidate permeable soluble materials and to form mortar type combining masses.
Patent CA-1173202-A (CA)
Inventor: BEDIER PIERRE C A
IPC: D04B1/24
Filed: 1981-02-18
Granted: 1984-08-28
Abstract: The present invention relates to a process for making mesh tights or panty-hose, with seam and elastic belt incorporated therein, and to tights obtained thereby. Over the height of the elastic belt, in a strip of about 2 cm width on either side of the slit made for joining two hose elements by a seam, an elastic yarn is knitted with one needle out of two, on the needles of the strip with the exception of the central needle, then the basic yarn is knitted on all the needles of the circular machine used, the hose elements are slit along the wale of the central needle and are joined by a seam.
Patent CA-1135538-A (CA)
Inventor: HOUGEN EVERETT D
IPC: B23B51/04
Filed: 1981-03-11
Granted: 1982-11-16
Abstract: ANNULAR HOLE CUTTER     Abstract of the Disclosure An annular cutter wherein the outer periphery of the cutter side wall is accurately concentric to the central rotary axis of the cutter and the inner periphery of the cutter side wall is eccentric to a predetermined amount with respect to the outer periphery of the side wall.              ------------ o -----------
Patent CA-1156380-A (CA)
Inventor: WELLS PETER F
IPC: C22B/
Filed: 1981-03-16
Granted: 1983-11-01
Abstract: A process for beneficiating a nickel sulfide ore in a selective manner comprising wet grinding the ore to liberation of minerals in the presence of sodium carbonate, treating the ground pulp at a pH of about 10 with sodium cyanide to depress the mineral content, conditioning the pulp, raising the redox potential of the pulp in a controlled manner, introducing therein a strong collector, floating a pentlandite concentrate, and thereafter floating a chalcopyrite concentrate.
Patent CA-1162631-A (CA)
Inventor: SMITH BARRY L
IPC: B61L3/24
Filed: 1981-04-03
Granted: 1984-02-21
Abstract: AUDIO FREQUENCY TRACK CIRCUIT FOR RAPID TRANSIT APPLICATIONS WITH SIGNAL MODULATION                   SECURITY             Abstract of the Disclosure An audio frequency track circuit with improved security in the train detection function for rapid transit applications for use with uninsulated rails in-cludes an improved transmitter and receiver.  The trans-mitter modulates a track frequency carrier with a fixed code rate, regardless of the code rate employed to modu-late the train information frequency.  The receiver in-cludes a decoder tuned to the track frequency modula-tion rate.  By using such a sharply tuned decoder, the noise protection threshold is increased.  Because of its application to uninsulated rails, with the associated lack of hard track circuit boundaries, adjacent track circuits have different track frequency modulation rates to insure that the modulated track frequency sig-nal, from one track circuit, is not effective to operate a track relay in another circuit even under failure conditions.
Patent CA-1181061-A (CA)
Inventor: BEILNER KARL
IPC: C10M107/34
Filed: 1981-05-01
Granted: 1985-01-15
Abstract: Abstract Piston compressors used in natural gas processing are lubricated with a lubricant which is compatible with the processing materials used downstream of the compressor.  A preferred class of lubricants comprises the polyglycols.
Patent CA-1168433-A (CA)
Inventor: SOPORY UMESH K
IPC: H05B3/14
Filed: 1981-05-15
Granted: 1984-06-05
Abstract: ABRIDGEMENT           The invention relates to PTC conductive polymer compositions and devices containing them.  The novel compositions contain a conductive filler, e.g. carbon black, which is dispersed a mixture of two crystalline polymers of different melting points.  The higher melting of the tWD polymers has a melting point which is at least 160°C and at least 25°C higher than the melting point of the other polymer.  A preferred mixture of polymers is poly(vinylidene fluoride) and an ethylene/tetrafluoroethylene copolymer. The compositions do not increase in resistivity by a factor more than 2 when maintained at 150°C for 1000 hours, and are therefore particularly suitable for self-limiting heaters which can be used on apparatus which is periodically subjected to high tempersture, e.g. during steam-cleaning thereof. The compositions are preferably annealed at a temperature between the melting points of the two polymers.  The novel compositions are relatively brittle and preferred devices are rendered more flex-resistant by the presence of a layer of a relatively flexible composition which is melt-fused to a PTC element composed of the novel composition.  A preferred heater is illustrated in Figure 1.
Patent CA-1176798-A (CA)
Inventor: RAVIOLA FLORENT
IPC: C08F210/16
Filed: 1981-05-27
Granted: 1984-10-23
Abstract: A copolymer based on ethylene and propylene, having a density of between 0.933 and 0.946 g/cm3 and a melt index of between 2 and 10 dg/min, wherein the copolymer has from 3 to 27 alkyl groups per 1000 carbon atoms in the molecule and wherein its density  rho  and its proportion m of alkyl groups in the molecule satisfy the relationship 0.948</= rho +0.71 m</=0.9525. The copolymer is produced by feeding a flux comprising from 80 to 95% by weight of ethylene and from 5 to 20% by weight of propylene into at least one reactor in stationary operation, the reactor having at least one reaction zone; and copolymerizing the ethylene and propylene in the reactor at a pressure of from 300 to 2500 bar and a temperature of from 180 DEG to 320 DEG  C. in the presence of a Ziegler type catalyst system.
Patent CA-1169450-A (CA)
Inventor: BUCHE PETER J
IPC: E06C9/04
Filed: 1981-05-27
Granted: 1984-06-19
Abstract: ABSTRACT OF THE DISCLOSURE           A folding step having a mounting plate and a step member.  The mounting plate has a back face and a front face and is adapted to be mounted against a surface to be climbed with its back face flush against the surface.  A recess is provided in the back of the plate and an opening extends through the plate between the recess and the front face.  The step member is mounted partially through the opening from the recess.          Cooperating means are provided on the plate and step member for preventing the step member from passing completely through the opening from the recess.  The step member is movable in the opening between a hori-zontal operative position where it projects transversely from the front face of the mounted plate, and an upright stored position where it lies generally parallel to, and against, the plate.
Patent CA-1169403-A (CA)
Inventor: BOER KORNELIS
IPC: F21V23/02
Filed: 1981-06-11
Granted: 1984-06-19
Abstract: PHN.97Z6                  12 ABSTRACT:           Luminaire for a tubular discharge lamp, having an elongate housing the ends of which comprise means for accommodating the lamp, at least an electric ballast being present in the housing, which housing is filled with cured foamed plastics material, the housing being a trough with a generally U-shaped cross-section and the foam extending to the open side of the housing.
Patent CA-1168905-A (CA)
Inventor: COLOMBO ALDO
IPC: A61B5/00
Filed: 1981-07-24
Granted: 1984-06-12
Abstract: ABSTRACT     Thermographic screen to display temperature variations at the skin surface comprising a supporting plate, and a thermosensitive layer carried on said support plate and composed of two sequentially applied liquid crystal for-mulations carried in a binder, the display temperature range of said formulations being adjacent.
Patent CA-1170147-A (CA)
Inventor: PHILLIPS HERBERT H
IPC: B23D45/12
Filed: 1981-08-06
Granted: 1984-07-03
Abstract: ABSTRACT OF THE DISCLOSURE    An elongated shank section is provided including mounting structure on one end of the shank section for removably mounting a rotary saw blade thereon.  Coupling structure is provided on the other end of the shank section for removably coupling a source of rotary input torque to the shank section and a rotary abutment collar assembly is mounted on an intermediate portion of the shank section for rotation of the shank section relative thereto and including structure for adjustably positioning the abutment collar assembly along the shank section and releasably retaining the collar assembly in ad-justed position along the shaft section against axial displacement relative thereto.  An elongated handle is provided and one end of the handle defines a hand grip while the other end of the handle includes a transverse journal portion through which the shank section is rotatably received.  The handle journal portion is mounted on the shank section intermediate the abutment collar assembly and the coupling structure.
Patent CA-1149793-A (CA)
Inventor: ALLARD JOSEPH R
IPC: G02B6/44
Filed: 1981-08-10
Granted: 1983-07-12
Abstract: Abstract of the Disclosure A cable strand tension-controlling apparatus is described.  As numerous individual wire or fiber-optic cable strand material is fed from multiple pay-off neutralizers, the cable strand material is direc-ted across a rotating driven capstan and subsequently a rotating idler capstan.  The cable strand then is directed into contact with a movable accumulator.  The movable accumulator is positioned appropriately in response to the internal tension of the cable strand that is in contact with it. Signals emanating from the rotating movable accumulator are then transmitted to a take-up in order to control the position and move-ment of the take-up reel.
Patent CA-1167236-A (CA)
Inventor: TELLIS CYRIL B
IPC: C01B32/50
Filed: 1981-10-02
Granted: 1984-05-15
Abstract: 12,862 SEPARATION OF HYDROGEN CHLORIDE      FROM GASEOUS MIXTURES                          ABSTRACT OF THE INVENTION      A method is disclosed for separating hydrogen chloride from a gaseous mixture containing hydrogen chloride and carbon dioxide in admixture with other gaseous impurities comprising contacting said gaseous mixture with a cross-linked, water-soluble polymer of N-glycidylpiperazine at a temperature between about -10 and 100°C.     -~                  S P E C I F I C A T I O ~
Patent CA-1167300-A (CA)
Inventor: AUGUSTO PETER
IPC: A61B3/02
Filed: 1981-10-28
Granted: 1984-05-15
Abstract: ABSTRACT OF THE DISCLOSURE     An improved refractor for use in the subjective examination of human eyes.  Each half of the refractor in-cludes a plurality of lens supporting disks, a hub assembly for rotatably supporting the disks, and a comb assembly to space the disks along the optical axis.  One of the disks supports at least one set of 4 cross cylinder lenses. Each disk is coupled to a stepping motor for selective rotation.          Each motor is, in turn, supported by a bracket which permits rotation equivalent to a partial motor step to insure align-ment of the optical elements supported on the disks with the optical axis.  The cylinder lenses supported on the disks are also rotated by a stepping motor.  The Risley prisms of each half of the refractor are always positioned on the optical axis and rotated by stepping motors.  Finally, the refractor includes electronics, including a microprocessor, to control the rotation of the motors as required to move the various optical components as necessary to emulate the ophthalmic prescription of the person whose eyes are being examined.
Patent CA-1177848-A (CA)
Inventor: TONNE PETER
IPC: C07B61/00
Filed: 1981-11-17
Granted: 1984-11-13
Abstract: ABSTRACT OF THE DISCLOSURE:         A process for the preparation of aromatic sulfohalides by reacting an aqueous solution t containing a hydrogen halide, of an aromatic diazonium halide with sulfur dioxide, wherein  a) the aqueous solution, containing the hydrogen halide, of a diazonium salt which is derived from the corresponding aromatic amine and the halogen of the desired sulfohalide is reacted with sulfur dioxide in the presence of an organic solvent which is immiscible or only partially miscible with water, is substantially inert to aqueous acids and SO2 and has adequate solvent power for SO2 and for the sulphochloride formed,  b) the diazonium salt is decomposed, simulta-neously or subsequently, by means of a catalyst for diazonium salt decomposition and  c) the resulting reaction mixture, or the organic phase thereof after removal of the aqueous phase, is treated with an oxidizing agent.
Patent CA-1179022-A (CA)
Title: Dispositif de fusion par induction directe en cage  froide avec confinement electromagnetique  supplementaire de la charge
Inventor: REBOUX JEAN
IPC: F27B14/06
Filed: 1981-12-18
Granted: 1984-12-04
Abstract: Dispositif de fusion par induction directe en cage froide, dit "auto-creuset" avec confinement électromagnetique de la charge fondue, dans lequel la paroi latérale cylindrique de la cage froide est réalisée à l'aide de nombreux segments en épingle à cheveux juxtaposés, formés chacun par deux tronçons conducteurs parallèles, creux et isolés l'un de l'autre sur toute leur interface à l'exception d'un tronçon transverse qui réunit une extrémité de l'un des tronçons à celle, adjacente de l'autre. Les autres extrémités de ces deux conducteurs sont respectivement électriquement et hydrauliquement reliés par des conducteurs tubulaires à deux anneaux collecteurs creux, respectivement reliés à deux bornes de sortie d'un second générateur de courant alternatif de moyenne ou haute fréquence, de sorte qu'ils conduisent respectivement des courants électriques dans des directions opposées qui assurent le confinement supplémentaire de la partie conductrice de la charge en l'écartant de la cage.
Patent CA-1165389-A (CA)
Inventor: COTZAS GEORGE M
IPC: H02P9/14
Filed: 1981-12-18
Granted: 1984-04-10
Abstract: STATIC EXCITATION SYSTEM     Abstract of the Disclosure A simplified static excitation system for a fluid-cooled dynamoelectric machine comprises a potential source excitation winding disposed in the stator slots, the winding being responsive to the fundamental frequency of the generator air-gap magnetic flux.  The excitation system further comprises trans-former means coupling the excitation winding to rec-tification means which is coupled to the rotating field windings so as to provide direct electric current thereto.  The transformer means is preferably disposed within the cooling fluid of the machine.
Patent CA-1165311-A (CA)
Inventor: MITSUHATA MASASHI
IPC: B01J23/66
Filed: 1981-12-23
Granted: 1984-04-10
Abstract: ABSTRACT OF THE DISCLOSURE         In a method for the manufacture of a silver catalyst having silver deposited on a porous inorganic carrier in conjunction with at least one reaction accelerator selected from the group consisting of alkali metals and thallium to be used for the production of ethylene oxide, the improvement comprising the steps of depositing silver on the porous inorganic carrier in conjunction with at least one reaction accelerator selected from the group consisting of alkali metals and thallium thereby preparing an activated silver catalyst and subsequently subjecting said silver catalyst to a high-temperature treatment at a temperature in the range of 550° to 950°C in an inert gaseous atmosphere having an oxygen concentration of not more than 3 volume percent in the final step.
Patent CA-1165782-A (CA)
Inventor: CUCHERAN EDWARD
IPC: E02F3/92
Filed: 1982-01-08
Granted: 1984-04-17
Abstract: ABSTRACT An extension cone for a cutter for a hydraulic dredge. The cone has spiral helical blades with an opposing helix to the cutter head to force the material forward as the cutter rotates, thus smoothing the bottom and returning any material which was cut and has passed the cutter head back to the suction orifice.
Patent CA-1193034-A (CA)
Inventor: WILLIAMS THOMAS C
IPC: C08K9/12
Filed: 1982-01-11
Granted: 1985-09-03
Abstract: ABSTRACT OF THE DISCLOSURE     The coupling action of polysulfide alkoxy silanes in rubbers is enhanced by the utilization of triorgano-phosphine compositions water, lower alkanal and a porous inert inorganic solid.
Patent CA-1175206-A (CA)
Inventor: GIEBEL GERHARD
IPC: A43D21/00
Filed: 1982-02-09
Granted: 1984-10-02
Abstract: Abstract Method of lasting the heel seat of shoes using a lasting wiper assembly (16) which wipes the lasting margin (28) over the insole (29).  In this case the shoe on its last is alignably positioned in relation to the lasting wiper assembly (16) by an advancing movement substantially in the direction of the plane of said assembly (16).  In this regard, the wiper assembly (16) is brought into a sufficiently closed intermediate position (Figure 3) that, when the advancing movement is completed, it has just traversed the insole edge (31) substantially about the whole of its periphery.  Advancing movement of the shoe on its last is effective with the insole (29) in a heightwise position relative to the lasting wiper assembly (16) in which position the lasting margin (28) is first laid over the insole (29) with some play. The shoe on its last is then automatically aligned under pressure against the wiper assembly (16), whereupon, with the shoe on its last now in a fixed position, the wiper assembly (16) effects the lasting operation.