baber/WOPTO huggingface dataset:
Patent CA-1198048-A (CA)
Inventor: SAVINS JOSEPH G
IPC: E21B43/28
Filed: 1982-12-21
Granted: 1985-12-17
Abstract: PROCESS FOR RECOVERY OF MINERAL VALUES      FROM SUBTERRANEAN FORMATIONS            ABSTRACT          The present invention relates to the in situ recovery of mineral values, particularly uranium, from subterranean formations that contain sulfur in organic or inorganic forms where the sulfur causes premature deletion of an oxidant and reduction in permeability of the formation.  The adverse effects due to the presence of the sulfur in the formation are substantially reduced in accordance with the present invention by treating the formations with an aqueous solution of iron-complexing agent and then oxidant to preferentially oxidize and solubilize at least a portion of the sulfur in the formation.  The present process may be applied either as a pre-treatment process to be followed by a leaching process or simultaneously with the leaching process.
Patent CA-1180538-A (CA)
Inventor: EICKMEYER ALLEN G
IPC: C01B32/50
Filed: 1983-02-17
Granted: 1985-01-08
Abstract: ABSTRACT     An improved, catalyzed process for the removal of CO2 from gas mixtures is described using a solution containing 15-40% by weight of potassium carbonate in which the absorption efficiency is enhanced by the addition of sodium or potassium vanadate equivalent to 2 to 10% by weight of V2O5 and sodium or potassium borate equivalent to 1 to 10% by weight of KBO2 in which the weight ratio of equivalent KBO2 to equivalent V2O5 is less than 1.5:1.  It has been found that use of the described catalysts permits significant reductions in solution circulation rates (up to 45%), which leads to equipment and utility economies.
Patent CA-1191707-A (CA)
Inventor: LAU WING-YAN T
IPC: D04B1/18
Filed: 1983-03-23
Granted: 1985-08-13
Abstract: KNIT CONSTRUCTION                  Abstract of Disclosure A knit construction having a repeating six-course, two wale pattern in which the six courses include four courses comprising alternating knit and tuck stitches and two courses comprising alternating knit and float stitches, and each of the wales includes the knit stitches of two of the courses of alternating knit and tuck stitches and one of the courses of knit and float stitches, the tuck stitches of the other two of the courses of knit and tuck stitches, and the float stitches of the other of the courses of knit and float stitches.
Patent CA-1186848-A (CA)
Inventor: LEE CHI-LONG
IPC: B29C59/00
Filed: 1983-04-20
Granted: 1985-05-07
Abstract: MICROWAVE CURED SILICONE ELASTOMERIC FOAM     Abstract A simplified method of manufacturing a silicone elastomeric foam comprises mechanically generating a stable froth of an aqueous emulsion while adding surfactant and thickener, then exposing the stable froth to microwave energy to remove the water.  The emulsion consists essentially of anionically stabilized hydroxyl endblocked polydiorganosiloxane, colloidal silica, an organic tin compound, and water, having a pH in the range of 9 to 11.5 inclusive.  The dried froth is an elastomeric, cellular structure possessing typical silicone elastomer heat stability and long-term aging stability.
Patent CA-1195932-A (CA)
Inventor: NASHEF AWS S
IPC: A61L17/00
Filed: 1983-05-13
Granted: 1985-10-29
Abstract: Abstract of the Invention A process for the preparation of implantable biological tissue, and  in  particular  bioprosthetic  heart  valves,  which  are  prone  to calcification after implantation.  The process includes the incorpora-tion of biocompatible polymers into the tissue in an amount effective in reducing calcification of the implanted tissue.
Patent CA-1220206-A (CA)
Inventor: HIRAGA YOICHI
IPC: C07D295/00
Filed: 1983-06-02
Granted: 1987-04-07
Abstract: PROCESS FOR RECOVERING ETHYLENEAMINES     ABSTRACT OF THE DISCLOSURE      Ethyleneamines are efficiently recovered from an aqueous solution thereof by extracting them from the aqueous solution into an organic phase with an extractant selected from carbonyl group-containing organic solvents, benzyl alcohol, carboxylic acids and salts thereof, alkylphosphoric acids and salts thereof, and mixed solvents containing at least one of these extractants.  The ethyleneamines in the organic phase is recovered preferably from the organic phase to the aqueous phase by incorporating an acid therein, followed by phase separation.
Patent CA-1198342-A (CA)
Title: Method and plant in processing, particularly cutting  up elongated objects such as timber
Inventor: PALMBERG ULF
IPC: B27B31/06
Filed: 1983-06-23
Granted: 1985-12-24
Abstract: ABSTRACT OF THE DISCLOSURE          A method and apparatus for cutting up successive blank lengths of timber by providing markings on the blank lengths for controlling cutting of the blank lengths, measuring the blank lengths from the leading ends to the trailing ends thereof and storing corresponding length-related pulses and sensing passage of the blank lengths past a cutting position and deducting pulses from the stored pulses to control cutting of the blank lengths at the cutting position.  The advance of a terminal portion of each blank length to the cutting position and the deduction of the pulses are interrupted and are subsequently restarted only when the leading end of the next succeeding blank length is brought into contact with the above-mentioned terminal portion.
Patent CA-1210777-A (CA)
Inventor: YOKOSHIMA MINORU
IPC: C08F290/00
Filed: 1983-06-27
Granted: 1986-09-02
Abstract: TITLE OF THE INVENTION:            ETHYLENICALLY UNSATURATED COMPOUNDS AND PROCESS          FOR PRODUCING THE SAME     ABSTRACT OF THE DISCLOSURE:     Disclosed herein are ethylenically unsaturated com-pounds represented by the general formula:       wherein R represents a hydrogen atom or a methyl group; on average m and n respectively represent a value of 1 to 5; on average p represents a value of 1 to 6; on average q and r represent respectively a value of 0 to 3; on average s repre-sents an integer of 0 to 5; p + q + r + g is 6; q + r is a value of 0 to 3; p + s is a value of 3 to 6 and the average value of mp + nq is 1 to 30.
Patent CA-1210876-A (CA)
Inventor: KYDD PAUL H
IPC: G01N23/12
Filed: 1983-07-15
Granted: 1986-09-02
Abstract: ABSTRACT OF DISCLOSURE     A meter system and method for measuring the velocity and metal  concentration  of  a  fluid  containing  a  gamma  ray absorbing metal isotope flowing in a pipe.  The meter system comprises  a  radioactive  source  of  gamma  rays  which  is oscillated in a direction angled to the fluid flow, an acce-lerometer device  incorporated with  the  gamma ray source, gamma ray detector means located adjacent a pipe portion for detecting the presence of a metal isotope in the flowing fluid,  and an electrical circuit and meter means arranged for measuring and displaying the velocity of the oscillating source of gamma rays when the metal isotope in the flowing fluid is absorbing gamma radiation.   If desired,  the con-centration of gamma ray absorbing isotopes such as iron com-pounds contained in the flowing fluid can be monitored by a counter means  to measure  the metal  concentration of the fluid,  or  ash  concentration  of  a  flowing  coal-derived liquid.
Patent CA-1216429-A (CA)
Title: Chain saw sharpening system
Inventor: GRANBERG ELOF
IPC: B23D63/12
Filed: 1983-08-16
Granted: 1987-01-13
Abstract: ABSTRACT OF THE DISCLOSURE CHAIN SAW SHARPENING SYSTEM          A system for sharpening teeth on a saw chain includes both a motorized grinder and a separate gauge.  The grinder includes a rotary grinding element and a height plate which is adjustable relative to the grinding element. The grinder may be used alone to sharpen the cutting edge of individual saw teeth and used in conjunction with the gauge to grind down the forward post of the saw tooth. Specifi-cally, the gauge includes a plate and a flange along one edge of the plate, both the plate and the flange including an opening therein.  By placing the flange of the gauge over at least two adjacent saw teeth, the upper surface of the flange defines a reference plane relative to the forward post of the teeth.  The grinder may then be used in conjunc-tion with the gauge to grind down the forward post to a preselected depth relative to said reference plane.
Patent CA-1245684-A (CA)
Inventor: WENTWORTH ROBERT S
IPC: F04D29/10
Filed: 1983-09-15
Granted: 1988-11-29
Abstract: MECHANICAL SEALS              FOR USE WITH SLURRY PUMPS            ABSTRACT           A mechanical seal assembly, especially for use in a slurry pump in which the seal rings (24,26,92, 94)  are resiliently urged into sealing relation by at least one elastomeric assembly (37,97,99) loaded in shear.   The preferred embodiment is constructed as a cartridge  (Fig.  1)  for installation and removal as a unit but it may also be constructed (Fig. 7) for instal-lation in situ.
Patent CA-1189447-A (CA)
Title: Wiper device for stripping fluid from well pipe
Inventor: BROWN WILLIAM H
IPC: E21B33/08
Filed: 1983-09-22
Granted: 1985-06-25
Abstract: "WIPER DEVICE FOR STRIPPING     FLUID FROM WELL PIPE"                         ABSTRACT OF THE DISCLOSURE            A wiper device is provided comprising a container having a central opening through which the well string may pass.  A pair of opposed wiper pads disposed in a horizontal attitude are mounted in spaced vertical relationship within the container for longitudinal movement toward each other, to engage the vertical string.  A double-acting pneumatic cylinder actuates each pad.  Each cylinder is mounted in the plane of the pad, said cylinder being connected at its front end with the rear portion of the wiper pad and being pivotally connected at its rear end with a support member.  The front end of the cylinder is thus adapted to rotate in a horizontal plane about its pivot connection, to accommodate transverse movement of the attached wiper pad.  The con-tainer side walls are spaced from the wiper pad edges to permit such transverse movement to take place.  Arrays of anti-friction rollers sup-port each of the pads.  The spacing of the walls, pivoting capability of the cylinder in a horizontal plane, and provision of the anti-friction means combine to permit transverse movement of the wiper pads.  The head ends of the cylinders are interconnected by a line to enable air, displaced from one cylinder, to move to the other, to permit of longi-tudinal movement of the pads.  The head ends of the cylinders are also connected with a pulsation tank, so that if both cylinders are simul-taneously contracted by passage of an enlargement through the pads, there is little change in wiping pressure.  Thus the pads can free-float with the well string, while maintaining a substantially constant wiping pressure.
Patent CA-1177294-A (CA)
Inventor: HEIL DONALD J
IPC: A61C1/05
Filed: 1983-11-23
Granted: 1984-11-06
Abstract: FLUID SPRAY SYSTEM FOX    DENTAL HANDPIECE                    Abstract A dental handpiece having an improved water/air spray system including a pair of substantially parallel tubes, one for water and the other for chip air, extending through the handle of the handpiece and terminating in a nozzle chamber of oval cross section.  The tubes are generally cylindrical but are partially deformed at their distal ends, such deformation constituting a flattening of adjacent wall portions of the respective tubes.  Such adjacent wall portions are disposed in contiguous relation and are cut away for a limited distance at the discharge end of the tube assembly to define the unitary nozzle chamber.  The chamber has an oval discharge orifice for directing an elliptical spray pattern towards the tip of the dental bur.  At the opposite end of the handpiece, the handle is equipped with a plug terminating in an external end face.  Tubular extensions project from that end face for conveying air to the drive air and chip air passages.  An open channel formed in the end face of the plug communicates with annular recesses disposed about such extensions, and each extension is provided with a lateral aperture communicating with the surrounding recess.  The open side of the channel and the ends of the recesses are sealed by a sealing member when the handpiece is in operation.
Patent CA-1227846-A (CA)
Inventor: TIVOLLE ALAIN H
IPC: G01N27/90
Filed: 1984-01-27
Granted: 1987-10-06
Abstract: ABSTRACT OF THE DISCLOSURE The invention relates to a device for detecting cracks in steel slabs leaving continuous casting, which comprises two crack detecting units placed on either side of the passage of a slab leaving continuous casting and two descaling and cooling units located upstream of the detection units. Each detection unit comprises a mobile frame and a head which slides verti-cally with respect to the frame and which bears one vertical sensor and three horizontal sensors. The sensors are induction coils placed in a container which is surrounded by a forwardly open metal casing. One application of the invention is the automatic switching of defective slabs towards a repro-cessing unit.
Patent CA-1237304-A (CA)
Inventor: VISINAND JEAN-CLAUDE
IPC: F16B23/00
Filed: 1984-02-22
Granted: 1988-05-31
Abstract: ABSTRACT     The invention is concerned with a screw-type fastener having a threaded shank and a head integral therewith, and adapted to be driven into a structure by axial rotation about its longitudinal central axis in a driving direction such that the head is countersunk.  The head has a circular peripheral edge and is formed with at least two ribs of substantially rectangular cross-section protruding from the surface of the head thereof and extending radially outward from the central axis to terminate flush with the peripheral edge while maintaining the cross-section constant.  The ribs define a corresponding number of sector-shaped cavities adapted to receive a filler material for engaging the ribs so as to prevent the fastener from axially rotating in a direction opposite the driving direction and to thereby secure the fastener against loosening.  Each rib projects from the surface of the head a distance equal to at least one-half the thickness of the head so as to define on either side a filler material abutting wall with each sector-shaped cavity having a depth such as to receive sufficient filler material to immobilize the ribs.
Patent CA-1220794-A (CA)
Inventor: ALLEMANN KURT
IPC: C04B28/04
Filed: 1984-02-23
Granted: 1987-04-21
Abstract: ABSTRACT            The present  invention  is  concerned with  liquid solidification accelerators for concrete mixes which are Stable during storage even at higher concentrations than the hitherto known liquid solidification accelerators and which, within the required concentrations, do not yield deposits.       The  new  solidification  accelerators  are characterised  by   the   content  alone   of  potassium aluminate, potassium carbonate and potassium hydroxide in a defined range.    They can be employed in all known hydraulic binder media, shorten the setting time of these binder media and improve the compressive strength of the products produced with these binder media.
Patent CA-1212101-A (CA)
Inventor: STEGEMOELLER CALVIN L
IPC: B01F15/00
Filed: 1984-03-05
Granted: 1986-09-30
Abstract: ABSTRACT    A mixing system comprising a movable mixing tub, a pumping source and a leveling valve inter-connected to the mixing tub and the inlet or outlet of 10 the pumping source.  The mixing system may include jet-type mixer to mix dry materials with fluid to be further mixed in the movable mixing tub.
Patent CA-1221762-A (CA)
Inventor: CENSE ADRIAAN
IPC: H04N9/45
Filed: 1984-03-15
Granted: 1987-05-12
Abstract: ABSTRACT:           In a hue control circuit for controlling the phase between a colour synchronising signal and a chromin-ance signal by a setting clement (57), this phase control is obtained without the amplitude being influenced, by deriving (via 17) from the original colour synchronising or chrominance signal a colour synchronising of chromin-ance signal whose phase is shifted through 90° and by controlling the amplitude of each of these colour synchro-nising or chrominance signals and adding these signals together (in 35).  One colour synchronising or chrominance signal is amplitude-controlled cosinusoidally (by 25) and the other colour synchronising or chrominance signal is amplitude-controlled sinusoidally (by 13) by means of the setting element (57).
Patent CA-1258600-A (CA)
Inventor: YACKIW CHARLES
IPC: E06B3/44
Filed: 1984-05-11
Granted: 1989-08-22
Abstract: WINDOW WEATHERSEAL SYSTEM            Abstract of the Disclosure A double-hung or side-sliding window includes horizontal and vertical weatherseal elements arranged so that each horizontal weatherseal element forms a sliding seal with each vertical weatherseal element to provide a complete seal in a double-hung or side-slidable window without the need for supplemental crack sealing members.
Patent CA-1230887-A (CA)
Inventor: SCHMIDT WERNER J
IPC: C11C3/10
Filed: 1984-06-20
Granted: 1987-12-29
Abstract: Abstract An edible fat suitable for producing margarines and low-fat spreads displaying good spreadability, melting behaviour and plasticity.            Said fat is produced by a process involving:        (i)  interesterification of a mixture consisting of a liquid oil, a partially hydrogenated oil and a fully saturated fat, and (ii) fractionation to obtain a higher melting stearin and an olein which is substantially free from tri-glycerides from 3 saturated C16-C18 fatty acids and has a level of triglycerides from 2 saturated fatty acids and 1 mono-cis or poly-unsaturated fatty acid, which is higher than 15%.     The interesterified mixture may contain some laurics.            The olein can be used as such or can be mixed with palm oil and/or hydrogenated palm oil to produce spreads.
Patent CA-1229459-A (CA)
Inventor: SUMNER ANTHONY J M
IPC: B29C70/00
Filed: 1984-06-27
Granted: 1987-11-24
Abstract: 10. ABSTRACT TYRE MANUFACTURE An apparatus and a method of manufacture for a tyre component comprising a sheet of reinforced unvulcanised rubber compound having two parallel main surfaces comprising pre-coating the reinforcement material fabric of the component with unvulcanised rubber compound, placing the component in an open mould shaped to accommodate the component arranged to contact one of said surfaces, positioning a pressurising member to contact the other said surface, maintaining the time/temperature conditions of the mould and the component below those required to cause vulcanisation, operating the pressurising member to apply substantial compressive force to the component so that the rubber compound is pressed into intimate contact with the reinforcement and removing the unvulcanised component from the mould.  The method provides real penetration of the rubber compound into the reinforcement and is particularly valuable for tyre breakers which are steel cord reinforced.  The breakers may be made as annular rings or straight discrete lengths.
Patent CA-1232939-A (CA)
Inventor: BERGSTROEM TOMMY
IPC: F16F15/02
Filed: 1984-07-10
Granted: 1988-02-16
Abstract: ABSTRACT OF THE DISCLOSURE:          A stand structure adapted to support electric high-voltage equipment comprising a platform on which the equipment can be mounted, and a plurality of substantially vertically extending insulator columns carrying the platform.   Universal joints at opposite ends of the insulator columns articulately connect the columns at their top to the platform and at their bottom to column foundations.   There are provided bracing means for the insulator columns, these bracing means including insulators which are stretched cross-diagonally between the ends of two adjacent of the insulator columns and interconnected by means of flexible connecting means.  A spring damper is operatively  connected to the flexible connecting means, the damper comprising a housing which is fixedly mounted in relation to the column foundations or in relation to the platform.
Patent CA-1220283-A (CA)
Inventor: KATO TADAHARU
IPC: G10L11/02
Filed: 1984-08-27
Granted: 1987-04-07
Abstract: ABSTRACT        The invention is a speech signal detector of simple construction which has threshold values adapted to the fluctuating level of noise contained in input speech signals.  The invention comprises an absolute value detector for detecting the absolute value of each of the input signals; a noise power detector for calculating from the output of the absolute value detector the noise power contained in each input signal; a first threshold value setting circuit for generating a first threshold value from the output of the noise power detector circuit; a level detector for comparing the output of the absolute value detector and the threshold value supplied by the first threshold value setting circuit; an accumulating circuit for accumulating the outputs of the level detector; a comparator for comparing the output value of the accumulating circuit and a second threshold value; a hangover timer for giving a hangover time in response to the output of this comparator; and a second threshold value setting circuit for altering the second threshold value in response to the output of this hangover timer and supplying the altered second threshold value to the comparator.
Patent CA-1217046-A (CA)
Inventor: BROSSARD ALFRED E
IPC: H05K3/34
Filed: 1984-09-13
Granted: 1987-01-27
Abstract: 37-14585/=                   COATING APPARATUS                ABSTRACT OF THE DISCLOSURE            A pouring head is arranged above a conveyer belt which carries objects to be coated with a coating material be-ing poured from the pouring head in the form of a cur-tain  extending transversely to the direction of travel of the belt. In order to limit the free falling curtain on both sides two rim severing organs are provided on each side of the curtain, one organ above the other, as well as curtain edge-guiding means, one for each severing or-gan, which are arranged each adjacent the severing organ to which it pertains. The lower severing organs are ar-ranged a short distance above the conveyer belt.         The two severing organs comprise blades for cutting off marginal strips from the falling curtain in two success-ive stages, thus reducing the width of the curtain to a desired size. The lower severing organ serves mainly to cut off the rim bead being conventionally produced on the curtain where it slides downward on the curtain guiding means, thus preventing the occurrence of undesirably thick marginal zones in the coatings produced on the ob-jects being moved underneath the pouring head by the con-veyer belt.                (Fig.1)
Patent CA-1236457-A (CA)
Inventor: MATSUMURA KOICHI
IPC: C07H9/04
Filed: 1984-09-25
Granted: 1988-05-10
Abstract: Abstract of the Disclosure A novel process is disclosed for production of ketals of 2-ketogulonic acid or of its esters, which comprises reacting 2-ketogulonic acid or its esters with a ketone in the presence of a ketal formation catalyst.          The process is advantageous from the industrial point of view to give ketals of 2-ketogulonic acid or of its esters.