baber/WOPTO huggingface dataset:
Patent CA-1273544-A (CA)
Inventor: BUFFET ERIC
IPC: F16K31/02
Filed: 1985-03-06
Granted: 1990-09-04
Abstract: ABSTRACT          An electrical valve having three paths, of the type comprising a valve body which is in permanent communication with an apparatus, controlled by fluid, notably by pneumatic partial vacuum, and is in alternate communication with either a fluid source of energy or with an outlet region, the passage from source to such outlet region and back being controlled by the plunger of an electromagnet permanently subjected to the action of a return spring urging the plunger to close such source.  The valve body forms a control chamber of small dimensions, located on the outside of the electromagnet parts, wherein which communicates with the three paths. An extension of the electromagnet plunger provided with a single stopper seal which controls alternatively the source of energy and the orifice of the outlet region extends into the control chamber.
Patent CA-1227368-A (CA)
Inventor: HALE JORDAN C
IPC: E01C19/16
Filed: 1985-03-07
Granted: 1987-09-29
Abstract: ABSTRACT OF THE DISCLOSURE             A portable self-contained asphalt melting and dispensing apparatus is disclosed. The apparatus is provided with a jacketed flexible hose having a controlled circulating system for circulating an oil heating medium, used for heating the asphalt in a kettle to also maintain the asphalt within the flexible hose in a fluid state during periods of non-use.
Patent CA-1270225-A (CA)
Inventor: STEVENS WARD C
IPC: C23C16/50
Filed: 1985-03-14
Granted: 1990-06-12
Abstract: ABSTRACT          Radio frequency conductive substrates comprising, e.g., plates or fibers of carbon or the like and a thin, uniform firmly adherent film comprising at least one metal, semi-metal, carbon or compounds thereof deposited by plasma assisted chemical vapor deposition onto the radio frequency excited substrate, and apparatus for their production.  Composites comprising the coated substrates and a continuous matrix of a metal, a ceramic or an organic polymer are also disclosed.
Patent CA-1237734-A (CA)
Inventor: WALKER BRYAN J
IPC: C04B18/02
Filed: 1985-04-11
Granted: 1988-06-07
Abstract: ABSTRACT OF THE DISCLOSURE           A building material in granular form, the material being formed from a natural or artificial pozzolan and not more than 5% by weight of added lime (calculated as CaO), the granules being internally bonded by a pozzolanic bond including mechanical bonds formed by crystallites of etteringite and amorphous calcium silicate, calcium aluminate or calcium alumosilicate or a mixture of any two or more such calcium salts.  Preferably, the pozzolan is pulverised fly ash.
Patent CA-1225521-A (CA)
Inventor: LITTLE FRANK
IPC: B65G49/04
Filed: 1985-04-18
Granted: 1987-08-18
Abstract: ABSTRACT OF THE DISCLOSURE         A metal finishing barrel construction comprising (a) plurality of perforate side walls extending between a pair of cir-cular end caps; (b) a pair of spaced ribs extending lengthwise of said barrel and defining sides of a rectangular barrel opening;     (c) each of said ribs including a plurality of lips spaced longi-tudinally along said ribs; (d) an access door  for said barrel opening comprising: (i) a perforate closure panel shaped to fit between said ribs to close said barrel opening; (ii) a pair of latch plates overlying an outer face of said closure panel and slidable towards and away from each other; (iii) each latch plate including a plurality of rigid tongues spaced along opposite sides of said plates that project beyond the side edges of the closure panel; (iv) locking tongues dimensioned to fit between adjacent lips formed on said barrel ribs and engageable with said lips upon sliding movement in said latch plates in a predetermined direction; (v) guide means for preventing skewed motion in said latch plates.
Patent CA-1245445-A (CA)
Inventor: INSTANCE DAVID J
IPC: B31D1/02
Filed: 1985-05-08
Granted: 1988-11-29
Abstract: ABSTRACT                 LABELS AND MANUFACTURE THEREOF            A self-adhesive label on a release backing material comprising a sheet which has been folded so that an upper sheet portion covers, and extends over an edge of, a lower sheet portion, the upper surface of the upper sheet portion bearing a desired lithographically printed image and the two opposed inner surfaces of the sheet portions bearing a second desired printed image, a support web comprising a self-adhesive backed material carried on a release backing material, the lower surface of the lower sheet portion and the lower surface of the extending part of the upper sheet portion being adhered to the upper surface of the adhesive-backed material, and a weakened tear line which extends across that part of the upper sheet portion which covers the lower sheet portion whereby the tear line can be torn thereby to unfold the label and reveal the two opposed inner surfaces.
Patent CA-1253695-A (CA)
Inventor: BALDWIN ARNOLD L
IPC: B23D63/16
Filed: 1985-05-17
Granted: 1989-05-09
Abstract: ABSTRACT OF THE DISCLOSURE    This invention is a device for sharpening saw chains while the saw chain is mounted on a chain saw cutting bar.  The saw chain sharpening device is designed for use by a chain saw operator at the job site.  The device comprises a frame configured to be straddle mounted over the saw chain and removeably clamped to the cutting bar.  The frame has mounted thereon at least one pair of diammetrically opposed bushings having an inside diameter to accept a saw file and to permit the file to be slideably moved and axially aligned with the axis of alignment positioned relative to the saw chain so that the saw tooth being filed precise control of the saw file position relative to the saw tooth being sharpened.
Patent CA-1260200-A (CA)
Inventor: MALHOTRA SATISH C
IPC: C08F2/26
Filed: 1985-06-13
Granted: 1989-09-26
Abstract: TITLE           TETRAFLUOROETHYLENE FINE POWDER AND         PREPARATION THEREOF                      ABSTRACT Tetrafluoroethylene fine powder resins are described which have surprisingly high extrusion pressures and molecular weights which make them useful in post-paste extruded stretching operations. The resins are made by using a permanganate polymerization initiator and controlling its rate of addition.
Patent CA-1237174-A (CA)
Inventor: MEEKER THRYGVE R
IPC: H03H3/08
Filed: 1985-07-31
Granted: 1988-05-24
Abstract: IMPROVED SURFACE ACOUSTIC WAVE FILTER Abstract A surface acoustic wave (SAW) filter is disclosed which exhibits both low insertion loss and small ripple in the passband requirements which wre considered mutually exclusive in the prior art.  In accordance with the present invention, apodized group-type recessed electrodes are utilized to form the transducers.  The grouping of the electrodes functions to reduce reflection between electrodes and apodization of the electrodes functions to increase the sideband rejection.  However, merely combining these techniques is inadequate since the apodization process produces additional ripple between adjacent electrodes, thus increasing the passband ripple. By recessing the apodized groups of electrodes, this reflection is minimized and a SAW filter formed in accordance with the present invention is thus capable of providing both low insertion loss and small ripple with high sideband rejection.
Patent CA-1258542-A (CA)
Inventor: SANDBROOK THOMAS D
IPC: B03D1/14
Filed: 1985-08-21
Granted: 1989-08-15
Abstract: CONTROL OF FROTH CELL PERFORMANCE THROUGH THE USE OF DIFFERENTIAL BUBBLER TUBES                            ABSTRACT           A method of controlling the separation of coal from a mixture of coal and refuse in a froth flotation device by measuring the differential back pressure between two gas bubbler tubes immersed to different depths into the body of pulp in the device to produce a first control signal representative of the pulp density, and adjusting the rate of addition of a froth enhancement addi-tive to the froth flotation device responsive to changes in said first signal; a second signal, produced by measuring back pressure of a single bubbler tube and representative of the pulp level in said device, can be corrected for changes in density by combining it with said first signal and then utilized to control liquid level in the cell by adjusting the rate of withdrawal of refuse therefrom.
Patent CA-1265990-A (CA)
Inventor: SUTHERLAND NEIL K
IPC: B01F3/04
Filed: 1985-09-25
Granted: 1990-02-20
Abstract: Abstract.      This invention relates to a carbonating apparatus which is designed primarily for the domestic market, but not solely as it has a place in the commercial field of hotel bars and restaurants.      A small carbonating apparatus used to carbonate various liquids ( fruit juices, beer, wine, milk, water, soft drinks and re-carbonate previously carbonated drinks, or to pressurize again bottles of carbonated drinks that were opened, to keep in good condition ), has an outer casing or housing which connects to a cylinder of compressed carbon dioxide gas, and has located within a filter, two discs, drilled and grooved to combine together to form a reduction valve, drilled airways from the discs through a series of three pistons, the airways branch to the outside to include a pressure gauge and a pressure relief valve, which is only in communication with the pressure in the airways but can control the pressure within the sealed bottle and can in certain aspects of the invention be used as an indicator as to when the correct pressure has been reached in the bottle. A series of three pistons combine together to provide a means for a piston in conjunction with a spring to control the pressure within and close, a second to give final closing in the central postion, and a third piston which is ocerated by the bottle, to pass into the non-return valve through the bottle cap, when depressed by the bottle activates the gas flow through and around the previously mentioned pistons.  In a second aspect of the present invention an injector block replaces the injector piston end functions with a pressure relief valve to control the pressure in the bottle whilst not being in direct communication with the contents of the bottle, thus permitting a pre-mix system to be used.  The insert in the bottle cap provides a shoulder to keep the washer in place , a well or recess to accept and position an o-ring for sealing on the injector, and an non-return valve.  The air is removed from the bottle by deforming and the further de-aeration by warming the contents of the bottle, The amount of liquid level in the bottle is of importance to allow the maximum amount to be carbonated at one time , and to provide maximum space in the bottle to receive CO2 to be agitated into the beverage. The sealed bottle method permits the bottled to be removed from the carbonator and to be agitated, to induce the beverage to absorb the CO2.
Patent CA-1238337-A (CA)
Inventor: TAKAKI USAJI
IPC: C07C69/65
Filed: 1985-10-01
Granted: 1988-06-21
Abstract: Abstract of Disclosure A cinnamte ester is prepared by reacting carbon monoxide, oxygen, and its corresponding styrene compound and alcohol in the presence of a catalyst which contains, as essential components, (a) a platinum group metal or a compound thereof;       (b) a copper or iron compound; and (c) a compound of at least one metal selected from groups 4A, 5A, 7A, 8A(the iron group only), 1B(exclusive of copper) and 2B.
Patent CA-1258195-A (CA)
Inventor: MORGAN JAMES T JR
IPC: G03B27/32
Filed: 1985-10-25
Granted: 1989-08-08
Abstract: Abstract of the Disclosure A process is disclosed for preparing a pre-press proof of an original subject having high-light, midtone and shadow tone areas using a color print paper wherein the dyes of the print paper are brought into substantial color compliance with the yellow, cyan and magenta process inks to be used in producing a lithographic reproduction of the origi-nal subject.  The tonal range of the proof image is also extended to closely match that of the final printed product.  After determining the densitometer readings for yellow, magenta and cyan through blue, green and red filters respectively for the print paper and the process inks,  the print paper is exposed to light through each filter with an appro-priate color separation halftone negative over the film and with combinations of filters being used for hue correction of the yellow, magenta and cyan film dye coupling dyes.  A masked short scale yellow separation halftone negative is used to prepare a dye transfer matrix thereof, the image defining portions of the matrix are dyed with a yellow trans-fer dye arid the yellow is then transferred to the print paper sheet since the yellow coupling dye of the print paper has an excess of magenta and will not provide a true lemon-yellow color in the proof. Exposure of the print paper through color separation positives along with the same separation negatives through corresponding filters provides tone balance and allows compensation for dot gain in printing.
Patent CA-1268954-A (CA)
Inventor: BUCCERI ALFIO
IPC: C09K3/24
Filed: 1985-11-05
Granted: 1990-05-15
Abstract: Title:    "METHOD FOR MAKING ARTIFICIAL SNOW"     ABSTRACT         A method of making artificial snow by mixing water with a water swellable polymer, preferably polyacrylamide, to approximately 50-70% of the maximum water retention capacity of the polymer, aerating the mixture and freezing the mixture to produce snow crystals.  The snow crystals are laid on a refrigerated floor to form a skiing slope.
Patent CA-1253942-A (CA)
Inventor: COX ALLEN R
IPC: G02F1/13
Filed: 1985-11-20
Granted: 1989-05-09
Abstract: ABSTRACT      An electro-optic display cell has an arrangement of display electrodes in contact with a liquid within a sealed enclosure.  The enclosure comprises an impervious transparent cover and a rigid structural wall member.  A seal between the cover and wall member and an elastomeric plug extending between the exterior and interior complete the enclosure.  The cell is filled by injecting the liquid into the presealed enclosure by perforating the plug with hollow needles also employed to remove entrapped gas.  Upon withdrawal of the needles the perforations collapse to self-seal the enclosure but for added integrity the plug is also mechanically clamped.  Conveniently, the seal and plug can be formed as an integral elastomeric moulding around a frame member forming the side wall of the enclosure and the frame member clamped between the cover and a separate base.
Patent CA-1255738-A (CA)
Inventor: LAGUSHENKO RADOMIR
IPC: H01J61/33
Filed: 1985-12-05
Granted: 1989-06-13
Abstract: D-23,355                                         PATENT     ABSTRACT     A low pressure arc discharge tube having structural means located within the envelope for raising the voltage across the arc tube.  The structural means comprises at least one partition extending across the arc tube and having a dimension which is less than the electron energy relaxation distance of the arc discharge tube.  Each of the partitions has at least one aperture therein which constricts the arc within the tube.
Patent CA-1262204-A (CA)
Inventor: CAYZER IAN S
IPC: B23K37/04
Filed: 1985-12-20
Granted: 1989-10-10
Abstract: PIPE AND FLANGE ALIGNMENT TOOL                ABSTRACT OF THE DISCLOSURE         A manually operated tool for aligning a flange to one end of a pipe so that the flange and pipe can be properly oriented in aligned relationship respective to one another and welded to-gether.  The tool is comprised of two spaced, rotatable mandrels which can be moved axially independently to one another within a cylindrical body.  A first and second set of radial blades extend through the main body and are moved radially in response to axial movement of the spaced mandrels.  The outer edge portion of one set of blades engages the internal surface of the pipe, while the outer edge portion of the other set of blades engage the inner surface of the flange.  This permits the flange to be axially aligned and properly oriented respective to and independently of the pipe so that the pipe and flange can subsequently be tack welded, the tool removed from the interior of the flange and pipe, and the weld completed to thereby provide a unique method of attaching a flange to a pipe end.
Patent CA-1254476-A (CA)
Title: Medical instrument
Inventor: SUZUKI TATSUO
IPC: A61M5/168
Filed: 1985-12-30
Granted: 1989-05-23
Abstract: Abstract of the Disclosure A medical instrument having a path for receiving a bar-like member and a combination of valves provided in the path.  The combination of valves comprises a first disc-like valve having a first slit open only to one of the end faces thereof and a second slit open only to the other of the end faces thereof, the first and second slits crossing each other to form a distance of inter-section inside the first valve, and a second disc-like valve disposed in parallel to the first valve and having a slit opening to both end faces thereof.  The slit of the second valve crosses the intersection point of the first valve so that the bar-like member passes through the slit of the second valve as well as the intersection of the first valve when it is inserted.
Patent CA-1264018-A (CA)
Inventor: JACKSON JOHN
IPC: H01C1/14
Filed: 1986-01-28
Granted: 1989-12-27
Abstract: ABSTRACT        ELECTRO-CONDUCTIVE ELASTOMERIC DEVICES     An elastomeric electro-conductive device (10) capable of providing within a predetermined range of elastic elongation (.lambda.) of the device (10) sensory signals representative of elastic elongation (.lambda.) imposed on the device comprises an elastomeric electro-conductive member (11) bonded to an elastomeric substrate (12).   Member (11) and substrate (12) have substantially similar resistance-to-stretch characteristics ? within the pre-determined range.   On a Mooney Plot for ( .lambda.-1) values in the range 0.5 to 0.8 ? is substantially constant at 0.4 M Nm-2.
Patent CA-1266747-A (CA)
Inventor: AI HIDEO
IPC: C08G73/10
Filed: 1986-04-28
Granted: 1990-03-13
Abstract: ABSTRACT:             A curable composition comprising (a) a curable polyimide soluble in organic solvents and (b) a polymeri-zation initiator as essential components, said polyimide consisting of recurring units represented by the formula   (I) wherein, each of X, X1, X2, X3 and X4 is a tetravalent carbocyclic or heterocyclic residue, each of Y1, Y2, and Y3 is a divalent carbocyclic or heterocyclic residue, at least one of Z1 and Z2 is a residue having a reactive carbon-carbon double bond, and each of ?, m, and n is an integer of 0 or larger.
Patent CA-1269372-A (CA)
Inventor: OKAMOTO YOSHIYUKI
IPC: C07C50/24
Filed: 1986-05-01
Granted: 1990-05-22
Abstract: Abstract of the Disclosure Anthraquinone and mono-substituted anthraquinones are provided wherein the substituent is selected from hydrogen, halogen, acyl, and alkyl in a one step reaction which comprises reacting 1,4-naphthaquinone with 1,3-butadiene which may be substituted as above, in the presence of a transition metal salt.
Patent CA-1268199-A (CA)
Inventor: NEEL JEAN-PHILIPPE
IPC: H01H71/52
Filed: 1986-06-09
Granted: 1990-04-24
Abstract: ABSTRACT            MOULDED CASE CIRCUIT BREAKER            A moulded case circuit breaker having a toggle-joint mechanism, articulated on the one hand on a hook and on the other hand on a moving contact support. When tripping takes place, the released hook pushes the toggle-joint, by means of an aperture, into a broken position to accelerate opening of the contacts. In the closed position, the toggle-joint is practically perpendicular to the hook.
Patent CA-1257394-A (CA)
Title: Balance a poids etalonne et convertisseur analogique  numerique utilisant une telle balance
Inventor: PHAM NGU T
IPC: H03M1/00
Filed: 1986-11-14
Granted: 1989-07-11
Abstract: L'invention concerne une balance à poids étalonné, pour la conversion d'un signal électrique analogique en un signal binaire. Cette balance est composée d'une bascule bistable ayant des premier et deuxième transistors à effet de champ montés source à la masse, et des première et deuxième résistances. La grille du premier transistor et le drain du deuxième sont reliés, tandis que la grille du deuxième transistor et le drain du premier sont aussi reliés. Sur la voie de référence, une troisième résistance conduisant un courant I0 est connectée entre la masse et le drain du premier transistor, ce dernier drain étant alimenté à travers la première résistance. Sur la voie de mesure, un troisième transistor à effet de champ a sa source connectée à une tension de référence négative et son drain au drain du deuxième transistor. L'entrée de la balance est la grille du troisième transistor. Les sorties de la balance sont les drains des premier et deuxième transistors. La deuxième résistance à travers laquelle le drain du deuxième transistor est alimenté constitue le poids étalonné et laisse passer un courant multiple de celui I0 qui passe à travers la troisième résistance de la voie de référence. Application aux convertisseurs analogiques-numériques " flash" .
Patent CA-1259955-A (CA)
Inventor: GURZAN EGON
IPC: B65D75/58
Filed: 1986-12-10
Granted: 1989-09-26
Abstract: ABSTRACT             A device for dispensing flowable material through a flexible wall of a bag, comprising a sealing part provided in the bag, and a dispensing part provided outside of the bag, the dispensing part being adapted to be mated with the sealing part as it penetrates the bag wall to form a throughgoing connection sealed against the bag wall around the opening.  The sealing part and the dispensing part include, outside of the areas surrounded by their bag sealing around the opening, cooperating interlocking means which upon mating of the parts engage between them and stretch the wall of the bag taut before the bag wall is cut, and which engage in an interlocking position at the end of the mating movement of the parts.
Patent CA-1238869-A (CA)
Inventor: DYSON JAMES
IPC: A47L9/16
Filed: 1987-02-13
Granted: 1988-07-05
Abstract: ABSTRACT OF THE DISCLOSURE           An improved cleaning apparatus 10 is described wherein a shroud 21 with a moveable collar 22 is provided on the outside surface 12b of a cyclone 12 in an air outlet 13d from a container 11 leading to the cyclone 12 to dislodge accumulated dirt in the air outlet when a fan 18 drawing air through the apparatus is stopped.  The apparatus preferably has a disc 20 which prevents long strands, such as hair, in the dirt from clogging the air outlet 13d from the container 11.  The apparatus is preferably in the form of a vacuum cleaner.
Patent CA-1264962-A (CA)
Inventor: SEIDEL RUDOLF
IPC: G12B17/00
Filed: 1987-03-09
Granted: 1990-01-30
Abstract: ABSTRACT OF THE DISCLOSURE          A sheltered-type protection means for process instrumentation/automation, particularly quality measuring equipment for industrial processes with a hazardous environment and materials is described, which has a self-supporting housing with an extractable support member, on which is arranged at least one analyzer, a sample preparation means, an auxiliary material system and a unidirectional or bidirectional communications means for electrical signals.   This arrangement permits a very compact construction and ensures that after extracting the support member unimpeded access to the individual components is possible.   The invention also has the advantage that as a result of the small dimensions of the housing,  it can be constructed in an extremely tight manner, so that the interior thereof is scavenged e.g. with an inert gas and can be kept under overpressure without leakage losses occurring.  Thus, as the entire inner area is protected against explosions, there is no need to provide the individual components of the system in explosionproof and therefore expensive construction forms. The invention satisfies the requirement of being able to install the analyzer system in the immediate vicinity of the particular process and this covers both explosion protection and the necessary protection against the weather.