baber/WOPTO huggingface dataset:
Patent CA-1094957-A (CA)
Inventor: MARCUS JAMES T
IPC: D01D1/10
Filed: 1977-02-28
Granted: 1981-02-03
Abstract: IMPROVED FILTER MEDIUM                    ABSTRACT OF DISCLOSURE Disclosed is a filter medium for removing contaminants, including gels, from molten polymers.  The medium contains layers of sintered metal fibers having diameters of 50 microns or less.  At least two adjacent layers are separated by a screen, and the screen and layers are bonded together by com-pression and sintering.  Preferably the layers include from 35 to 60 volume percent fibers.  The filter medium is graded so that the polymer as it flows through the medium encounters fiber layers having pores that generally decrease in size. The screen has pores that are larger than the average size of the pores in any downstream layer and that are larger than the average size of the pores in the upstream layer immediately adjacent the screen.  The screen collects at least some of the gels or other particles that pass through the upstream layer, giving the medium a higher dirt holding capacity than the conventional filter medium.
Patent CA-1077294-A (CA)
Inventor: MEDLAR LEWIS A
IPC: G01L13/02
Filed: 1977-03-08
Granted: 1980-05-13
Abstract: APPLICATION OF LEWIS A. MEDLAR       AND WILLIAM F. NEWBOLD             PRESSURE TRANSMITTER WITH SIMPLIFIED                     PRESSURE SENSING HEAD                  ABSTRACT OF THE DISCLOSURE       A differential pressure to electrical signal transmitter has a pair of flat barrier diaphragms and a central control diaphragm located between the barrier diaphragms.  First chambers between one of the barrier diaphragms and the control diaphragm, and a first length of capillary tubing connected between the first chambers and one chamber of a remotely located sensor capsule, are filled with a first incompressible fill liquid.  Second chambers between the other barrier diaphragm and the control diaphragm, and a second length of capillary tubing connected between the second chambers and another chamber of the sensor capsule, are filled with a second incompressible fill liquid.  The fill liquids are made to pump up their respective flat barrier diaphragms to cause the latter to have a dome shape and hence to be free from "oil canning."  A chamber on the outside of one barrier diaphragm is pressurized with a first fluid, and a chamber on the outside of the other barrier diaphragm is pressurized with a second fluid.  The pressures of the two fill liquids act on the opposite sides of a minute displacement sensing element, located between the two sensor chambers, to displace the element and cause it to produce an electrical output signal which is dependent upon the difference between the fill liquid pressures, and hence upon the difference between the pressures of the first and second fluids.  An excess of either of these pressures causes the corresponding barrier diaphragm to bottom-out on a mating flat back-up surface to prevent damage to the barrier diaphragms and the sensing element.
Patent CA-1095344-A (CA)
Inventor: MAHER FRANCIS W JR
IPC: G01N33/483
Filed: 1977-03-18
Granted: 1981-02-10
Abstract: ABSTRACT OF THE DISCLOSURE      Sample preparation apparatus for forming a thin layer of diluted blood specimen on a substrate by centrifugal force includes a sample probe having coaxial blood and diluent con-duits coupled to respective reversibly-drivable peristaltic pumps having forward operation intakes connected to a diluent supply.  A one-way clutch limits the diluent pump to forward operation and the pumps are geared to produce a blood-to-diluent displacement ratio of 2:1.  A substrate holder is mounted on a carriage for selective insertion into and removal from a sealed centrifuge chamber in which it is spun at a high angular rate by a drive motor.  Means are provided to form a curtain of flowing liquid within the chamber surrounding the spinning substrate to collect spun-off blood particles and aerosol.          The liquid forming the curtain is drained by an exhaust pump which operates after spinning has ceased so as to create partial vacuum for draining off residual aerosol prior to unsealing the centrifuge chamber.
Patent CA-1079301-A (CA)
Inventor: VOLLMER HARTFRID
IPC: B01J31/00
Filed: 1977-03-24
Granted: 1980-06-10
Abstract: PRODUCTION OF TERTIARY PHOSPHINE OXIDES.    ABSTRACT OF THE DISCLOSURE:      Production of tertiary phosphine oxides which contain nitrile groups and correspond to the follo-wing general formula I:            in which R1 and R2 each stand for a straight or bran-ched, identical or different alkyl, cycloalkyl, aryl, alkylaryl or aralkyl group having 1 to 18 carbon atoms, and in which R1 or R2 may be identical with R, which stands for a radical of the following general formu-la II:       in which R3 and R4 each stand for a straight or bran-ched, identical or different alkyl, cycloalkyl, aryl, alkylaryl or aralkyl group having 1 to 18 carbon atoms, and/or hydrogen atoms.The tertiary phosphine oxides are made by reacting a phosphine of the following general formula III:                          III     in which R5 has the same meaning as R3 and R6 has the same meaning as R4 but is no hydrogen, with an .alpha.,.beta.-unsa-turated nitrile of the following general formula IV:       in which R3 and R4 have the meanings given above. The reaction is effected in a single stage in the presence of water or a water-solvent mixture  and the above for-mula I compounds are separated from the reaction product.
Patent CA-1062079-A (CA)
Inventor: HEDBERG JOHN B G
IPC: F42B3/18
Filed: 1977-03-29
Granted: 1979-09-11
Abstract: A B S T R A C T  O F  T H E  D I S C L O S U R E                AN ELECTRIC DETONATOR CAP     An electric detonator cap has a casing, which accommodates an explosive detonator charge, an electrically ignitable device. for firing the detonator charge, a chargeable and discharge-able electric energy source for igniting the firing device and an electric circuit arrangement, including a controllable switch connected between the energy source and the firing device, an electric delay circuit, and a decoder. The energy source is connectable via connecting wires-extending out from the casing, to an electric current source for charging the energy source, and the decoder is electrically connected to said connecting wires and is adapted upon receipt of a specific electric firing command signal supplied through said connecting wires to actuate the delay circuit in a manner to close the switch after a predetermined delay time.
Patent CA-1081700-A (CA)
Title: Compositions a base d'alcenylsuccinimides derives de la n,n,n',n' tetrakis (amino-3 propyl) ethylene diamine
Inventor: SOULA GERARD
IPC: C10N40/25
Filed: 1977-03-31
Granted: 1980-07-15
Abstract: : L'invention vise des compositions à base d'alcénylsuccinimides contenant au moins un alcénylsuccinimide de formule : où R est un groupe alcényl en C20 - C200' m est un nombre entier égal à 0,1 ou 2, n est un nombre entier égal à 0 ou 1.  Ces compositions peuvent être préparées par condensation d'un anhydre alcénylsuccinique avec de la N, N, N', N' tétrakis (amino-3 propyl) éthylène diamine.  Lesdites compositions sont utilisées comme additifs pour lubrifiants.
Patent CA-1060602-A (CA)
Inventor: PERRINE PAUL M
IPC: E03D1/14
Filed: 1977-04-27
Granted: 1979-08-21
Abstract: ABSTRACT               Apparatus for selectively conserving water used in association with a commode flush tank is disclosed.  The apparatus comprises a generally rectangular plate having ratchet means for wedging the plate between two opposed walls of the tank.  The plate further includes a series of longi-tudinally disposed circular apertures for carrying an elongated stem member downwardly into the tank.  The stem member, which slidably receives an elongated float, is carried by the plate so as to maintain the float disposed relative to the buoyant outlet valve of the flush tank.  Whereby upon only partial emptying of the tank in response to operating the flush lever, the float contacts the buoyant valve to effect premature closure thereof.  In another embodiment, the stem and float may be disposed to one side of the buoyant valve such that a transversely extending retainer clip carried by the float applies a vertical uniform pressure to the top of the buoyant valve in order to achieve premature closure.
Patent CA-1062128-A (CA)
Title: Splitting assembly
Inventor: KOLONIA ROBERT A
IPC: B26B23/00
Filed: 1977-05-16
Granted: 1979-09-11
Abstract: SPLITTING ASSEMBLY The device comprises a head portion having a cutting edge with a pair of lever members mounted on opposing sides of the head portion.  The lever members are pivotally mounted at one end thereof to move in a crossed relationship with respect to each other and to swing the outer end thereof from a resting position outwardly with respect to the head portion.  The outer end of each lever member has a structural configuration effective to cause the swinging movement of the lever members upon contact with the object to be split.  The outer end of each lever member contacts the object immediately after the cutting edge contacts the object.  The lever members are effective to provide forces via their end portions against opposing sides of a cut formed by the cutting edge and thereby enhance splitting of the object against which the cutting edge has been thrust.  The lever members are pivotally mounted to bosses directly attached to the head portion.
Patent CA-1087720-A (CA)
Inventor: VIND HOLGER V
IPC: H02K17/08
Filed: 1977-05-19
Granted: 1980-10-14
Abstract: ABSTRACT OF THE DISCLOSURE           A starting device for an asynchronous motor is described, in which a condenser and a PTC resistor form a series circuit.  The electrolytic condenser and PTC resistor are accomodated in the same housing, but separated by an intermediate wall.  The outer wall of the housing has ventillation apertures in the region of the PTC resistor, and carries two connecting devices accessible from the outside
Patent CA-1106143-A (CA)
Inventor: SCHWERDT FRIEDRICH W
IPC: H01L21/306
Filed: 1977-06-30
Granted: 1981-08-04
Abstract: A B S T R A C T       A method of making a metal-ion free silicon dioxide is provided which has a specifically uniform grain size and which is suitable for the mechanical polishing of semiconductor wafers.  In the process according to the invention high grade silicon is dissolved in an aqueous solution of an organic amine.          The base surplus is buffered by hydrogen ions from an added hydroxybenzene  Subsequently, the solution is boiled under reflux for several hours with bubbling of purified air.  The precipitated amorphous silicon dioxide is collected, rinsed, and suspended in water for the mechanical polishing of wafers.
Patent CA-1105672-A (CA)
Inventor: EDWARDS ROBERT H
IPC: C01B25/16
Filed: 1977-07-18
Granted: 1981-07-28
Abstract: A B S T R A C T     Crude aqueous phosphoric acids containing dissolved water immiscible solvent can be treated with ammonia or alkali metal or alkaline earth metal compounds to form a liquid solvent phase separate from an aqueous solution phase of dihydrogen phosphate salt and phosphoric acid;  the phases are separated, the solvent recycled for reuse in a solvent extraction process and the aqueous treated with ammonia or alkali or alkaline earth metal compounds to form a fertilizer or other phosphate salt.
Patent CA-1100420-A (CA)
Inventor: MARKERT MATTHEW E
IPC: F16D55/226
Filed: 1977-07-22
Granted: 1981-05-05
Abstract: FLOATATION AND ANCHORING MECHANISM FOR DISC BRAKE           ABSTRACT OF THE DISCLOSURE         A disc brake is provided with a torque member having a pair of arms which define a recess which slidably receives one of the friction elements   The torque member and one friction element are designed so that braking torque is transmitted from the one friction element to the torque member through a primary abutment located on the lower edge of the recess, and a pair of secondary abutments.  The other friction element is carried by a caliper which is slidably mounted on removable rails mounted on the upper end of the arms.  The braking torque generated by the other friction element is transmitted through the caliper and the rails mounted on the other arm.  Consequently, the braking torque is divided so that it is taken by several different portions of the torque member, thereby permitting a smaller and more efficient torque member.
Patent CA-1138556-A (CA)
Inventor: NAKAUCHI SHUNSAKU
IPC: G08B17/00
Filed: 1977-08-16
Granted: 1982-12-28
Abstract: ABSTRACT OF THE DISCLOSURE      A flame sensing system according to the inven-tion makes use of infra-red rays produced by resonant radiation of carbon dioxide in o flame and gives no wrong information duo to discharge of thunder or sun-light and has high sensitivity with good S/N ratio.          The flame sensing system is characterized in that when a ratio of an output of intensity of a first radiation produced by resonant radiation of carbon dioxide to an output of intensity of a second radia-tion having a wavelength located in the vicinity of the wavelength of said first radiation in the region of wavelength in which there is little absorption by the carbon dioxide in the air exceeds a predetermined value, difference in intensity between said first radiation and said second radiation is detected either by increasing the output of said first radi-ation or by decreasing the output of said second radiation thereby to give a warning.
Patent CA-1071852-A (CA)
Inventor: LAWSON RONALD
IPC: D02G1/12
Filed: 1977-09-09
Granted: 1980-02-19
Abstract: ABSTRACT OF DISCLOSURE         A process and apparatus for the continuous pro-duction of heat-set, crimped, thermoplastic filaments by passing a tow of filaments through a stuffer box crimper and then a heat setting device attached to the exit of the crimper.  The tow in the crimping chamber is cooled to a temperature not exceeding 100°C. in order to separate the heat setting and crimping processes, whereby the crimp ratio may be varied by adjusting the temperature of the tow in the crimping chamber.
Patent CA-1065625-A (CA)
Inventor: NOSEWORTHY ALBERT
IPC: E02B15/02
Filed: 1977-09-16
Granted: 1979-11-06
Abstract: ABSTRACT OF THE DISCLOSURE           The present invention is directed to a novel method and apparatus for clearing a channel or opening through an ice-covered body of water.  Explosives are placed on the undersurface of or embedded in an ice cap, through which a channel is to be cleared.  Whereas known techniques for clearing a channel through an ice cap by placing explosives under an ice cap were limited by uneven underwater ice formations or extremely thick ice, the present invention overcomes these obstacles by provision of new techniques and equipment including an inflatable tube attached to a string of explosives and by the use of a novel underwater sled which runs along the under-surface of the ice and carries the explosives under the ice cap.
Patent CA-1094389-A (CA)
Inventor: RIDGEWAY JOHN J
IPC: F42B3/08
Filed: 1977-10-25
Granted: 1981-01-27
Abstract: ABSTRACT OF THE DISCLOSURE    A shaped explosive charge device for underwater use wherein a deflated inflatable element is positioned within the stand-off space and, when the device is in position for firing, for example, as an inside cutter, the inflatable element is inflated to exclude water from the cavity and stand-off space between the explosive charge and the target surface.
Patent CA-1090441-A (CA)
Inventor: KAMIYAMA TOSHIBUMI
IPC: G01W1/14
Filed: 1977-11-02
Granted: 1980-11-25
Abstract: Abstract of the Disclosure The specification discloses a frost detector which comprises a piezoelectric element secured onto a metal dis-phragm inside an air-tight space formed by the diaphragm, a base and a bellows which resiliently connects the diaphragm and the base in an air-tight manner. The base is then secured to a fin of a heat exchanger and the piezoelectric element is connected to an oscillation circuit and an oscillation detection circuit.  The resonance frequency and impedence characteristics of the piezoelectric element are changed as a layer of frost grows on the outside face of the diaphragm, and the frosting is detected through a change or dampening of the oscillation. When this occurs, an output signal is generated by the oscilla-tion detection circuit, and defrosting means is operated in response to the signal.  A detector is thus provided which actually measures the amount of frost formed on the heat exchanger, and this improves the performance of a cooler or freezer fitted with the detectors.
Patent CA-1077174-A (CA)
Inventor: CRAIG ASHLEY G
IPC: A47G9/00
Filed: 1977-11-10
Granted: 1980-05-06
Abstract: " IMPROVEMENTS IN OR RELATING TO                  CUSHIONS OR PILLOWS"     Abstract of the disclosure The cushion or pillow including a cover, the cushion or pillow being generally V-shaped having arms of equal length, the inner side of the V being concavely curved.
Patent CA-1088561-A (CA)
Inventor: HASHIZUME HIROSHI
IPC: C07C51/44
Filed: 1977-12-08
Granted: 1980-10-28
Abstract: ABSTRACT OF THE DISCLOSURE             There is disclosed a process for producing terephthalic acid in which the mother liquor of the terephthalic acid slurry resulting form the oxidation of para-xylene, form which terephthalic acid has been separated is subjected to distil-lation to recover at least a portion of methyl acetate present therein, the recovered methyl acetate being circulated into the reactor.
Patent CA-1087247-A (CA)
Inventor: BRIGHT ALFRED W
IPC: G01R29/24
Filed: 1978-01-09
Granted: 1980-10-07
Abstract: ABSTRACT    In apparatus for continuously monitoring the electrostatic charge transport rate or the charge density in a stream of insulating material flowing through a pipeline, a charge collection chamber and a volumetric flowmeter are connected into the pipeline.  The chamber is electrically isolated from the pipeline and connected to earth through an electrometer.          The chamber is constructed to ensure turbulent flow within the chamber, the cross-sectional area being enlarged in relation to the pipeline to produce a substantial reduction in linear flow rate.  When calibrated for a particular material, such as a hydrocarbon fuel, a value for charge density is derived from measurements of the flow rate and of the current measured between chamber and earth.
Patent CA-1145400-A (CA)
Inventor: ROBSON WILLIAM F
IPC: G01R19/165
Filed: 1978-02-16
Granted: 1983-04-26
Abstract: ABSTRACT OF THE DISCLOSURE             An instrument for locating the position of hidden live continuous or broken wires utilizes an indicator such as a series of light emitting diodes to indicate the adjacency or the strength of the electrostatic field surrounding the wire. By watching the number of light emitting diodes lit, the instrument can be brought directly to the wire.  The instrument is comprised of an antenna connected to the high input impedence of an amplifier, a low pass filter connected to the output of the amplifier, a lamp operation circuit and an indication means connected to the lamp operation circuit.
Patent CA-1089917-A (CA)
Inventor: PARANJPE SURESH C
IPC: H04N1/207
Filed: 1978-03-03
Granted: 1980-11-18
Abstract: JET DROP COPYING APPARATUS                Abstract Of The Disclosure A jet drop copying apparatus has an array of printing nozzles supported for axial movement over a copy paper mounted upon a rotating drum.  Simultaneously therewith an optical scanning system scans a document positioned flat on a planar support surface and sweeps an image thereof across an array of photosensors arranged in correspondence with the array of printing nozzles.  Output signals from the photosensors are supplied to a control unit which controls the printing operation of the nozzles.         The control unit also controls the optical scanning for synchronism with the movement of the nozzle array relative to the copy paper.  The nozzles are rather widely spaced, but their spacing (and likewise the photosensor spacing) is adjusted in accordance with the number thereof and with the nozzle movement speed so as to produce an interlaced solid printed copy.  Optical distortion during scanning is avoided by provision of a double lens arrangement with a rotating mirror therebetween.
Patent CA-1086369-A (CA)
Inventor: GIOVANNETTI FIORELLO
IPC: F16B12/20
Filed: 1978-04-03
Granted: 1980-09-23
Abstract: ABSTRACT OF THE DISCLOSURE A device for rigidly interconnecting wood panels or other parts of a piece of furniture. The joint comprises a finned shank and a head, secured within a seat provided in a first panel, and the head being removably engageable with a pin projecting from a second panel to be connected to the former. The joint head comprises a seat coaxial with the shank, and open at the front and top for introducing said pin from above; on the bottom and at intermediate position, the seat in the joint head also has a transverse rib for engagement with a slot at the pin end. A closure cover clamps the pin in the seat and has projecting tabs for rotational engagement within longitudinal slots provided internally of the head at the top of said rib.
Patent CA-1089228-A (CA)
Inventor: LIFSHUTZ NORMAN
IPC: A01M23/26
Filed: 1978-04-04
Granted: 1980-11-11
Abstract: ABSTRACT OF THE DISCLOSURE      Disclosed is a padded jaw animal trap with improved holding power in order to retain an animal caught in the trap.  The padding of each jaw has a face with a concave geometrical arrangement such that when an animal is caught in the trap, the face deforms to a nearly planar surface forcing ridges of flesh on either side of the face.  It is this ridge of flesh which increases the holding power of the padded jaw trap over the prior art.
Patent CA-1093353-A (CA)
Inventor: HARRIS FREDERICK J
IPC: F16B13/06
Filed: 1978-04-06
Granted: 1981-01-13
Abstract: ABSTRACT OF THE DISCLOSURE     A masonry anchor including a sleeve having one or more protuberances extruded from its sidewall, said sleeve being annealed to a hardness not to exceed a Brinell hardness number of 230 so as to allow said protuberances to deform into a flattened state to increase the overall holding power of said anchor.
Patent CA-1108688-A (CA)
Inventor: TAYLOR THOMAS N
IPC: G03B27/62
Filed: 1978-05-18
Granted: 1981-09-08
Abstract: ABSTRACT OF THE DISCLOSURE             A document handling apparatus and a reproducing machine employing it, include a system for pre-registering a document prior to its advancement to a viewing station. A stop member is selectively positionable in and out of a path of the document. A guide chute defines a desired throat for guiding the document into engagement with the stop member. A system is provided for transporting the document to the viewing station. The guide chute is supported for movement  in a direction away from the stop member in response to the movement of the stop member between its respective positions in and out of the document path.