baber/WOPTO huggingface dataset:
Patent CA-1104148-A (CA)
Inventor: CROSBY JOHN
IPC: C07C265/00
Filed: 1977-04-01
Granted: 1981-06-30
Abstract: ABSTRACT OF THE DISCLOSURE           Process for the preparation of organic isocyanates in which a furoxan is heated in the presence of a vicinal di-keto compound containing two adjacent keto carbonyl groups. When the furoxan ring is fused to an organic ring system di-isocyanates are produced.  An adduct of the furoxan and the diketo compound may be isolated from the reaction mixture and used as a stable isocyanate precursor in, for example, a "one-pot" polyurethane composition.  The adduct may be represented by the structure   wherein X represents an acyclic or cyclic divalent hydrocarbonyl group and Y, Z which may be the same or different are hydro-carbyl groups which are either separate or combined into one cyclic system.
Patent CA-1083260-A (CA)
Inventor: CANDY JAMES C
IPC: H03M7/00
Filed: 1977-04-14
Granted: 1980-08-05
Abstract: ANALOG TO DIGITAL CONVERTER            Abstract of the Disclosure An analog signal to be converted into a high resolution digital signal is first converted to a coarsely quantized signal by a direct feedback coder.  A group of successive coarsely quantized signals are then processed by a converter which produces the high resolution digital signal.  In the converter, the processing is performed by an arrangement of two accumulators.  The first accumulator provides an output signal indicative of the running sum of each group of coarsely quantized signals.  The second accumulator has the capability of providing an accumulation of either the negative or the positive of the output signal of the first accumulator.  A negative accumulation is used for a first portion of the group and a positive accumulation is used for the second portion of the group to provide a net sum.  The net sum is a triangularly weighted accumulation of the successive signals in the group which occasions self-cancelling of the quantizing noise inherent to the direct feedback coder.  Each net sum is used to form a code word of several digital bits in a high accuracy signal.  Utiliza-tion of a third portion between the first and second portions of the group in which the second accumulator is idle provides a trapezoidal weighting in the net sum.  The latter weighting provides a further improvement in resolution and accuracy.
Patent CA-1082262-A (CA)
Inventor: NAGARA HIROAKI
IPC: B60T8/28
Filed: 1977-05-13
Granted: 1980-07-22
Abstract: ABSTRACT OF THE DISCLOSURE          A load-responsive pressure reducing valve assembly for hydraulic brake systems to be interposed between a brake master cylinder and the rear wheel brake cylinders of a wheeled vehicle and includes a fluid pressure proportioning valve which restricts the flow of fluid from the master cylinder to the brake slave cylinder during a predetermined range of increasing fluid  pressure supplied therefrom to the brake slave cylinder.  The assembly also incorporates an inertia-responsive valve which includes a valve member usually in the form of a ball which is responsive to a predetermined rate of deceleration so as to vary fluid pressure acting on the aforesaid proportioning valve to thereby correspondingly vary or set the reduction starting pressure of the fluid pressure proportioning valve.  A preloaded piston is dis-placeable with the application thereto of a predetermined range of increasing fluid pressure from the master cylinder to correspondingly increase the distance which the ball valve member must travel up an incline to close the inertia-responsive valve and thereby regulate the reduction starting pressure of the reducing valve in correspondence with the distance which the inertia ball, which detects deceleration, travels and the master cylinder hydraulic pressure.   1.
Patent CA-1093130-A (CA)
Inventor: SILVER ALEXANDER
IPC: F16C17/03
Filed: 1977-05-16
Granted: 1981-01-06
Abstract: ABSTRACT Foil bearing apparatus having a plurality of individual compliant foils and mounting assemblies therefor wherein each mounting assembly is coupled to an associated foil at a position intermediate the ends of the foil.          Individual compliant foils configured for mounting in this fashion and methods of mounting such foils are also defined.  In addition, the apparatus may include associated foil stiffeners especially configured to achieve improved damping of bearing oscillations.  In one embodiment, the compliant foil may be similarly configured to provide the desired damping.
Patent CA-1061709-A (CA)
Inventor: BUNNELLE PHILIP R
IPC: E21C41/20
Filed: 1977-06-13
Granted: 1979-09-04
Abstract: ABSTRACT OF THE DISCLOSURE         Method and apparatus for subterranean slurry drilling and mining of granular ore, such as phosphate, with a combined drilling and mining apparatus.  The apparatus includes a tool string having a drilling head and mining head that are selectively interchangeable on its upper end for drilling into one or more ore strata to be mined and thereafter to remove ore from the strata as a slurry.  The drill string includes a plurality of inner and outer pipe sections connected to a mining nozzle section, to an eductor pump section, and to a drill bit as its lower end.  A drilling/mining liquid is directed through the tool string during both the drilling and mining modes of operation.  During drilling, liquid is directed through a foot valve into the rotating bit to wash cuttings to the surface externally of the tool. During mining, the tool string is rotated, the foot valve is closed, and a mining nozzle is opened thereby causing liquid jetting from the mining nozzle to reduce the ore to a slurry.  The slurry is pumped to the surface by liquid passing upwardly through the eductor pump and through the inner conduit.  Without removing the apparatus from the hole, a hydraulic control system is actuated by hydraulic pressure equal to or less than system pressure for shifting the mining nozzle, the eductor nozzle, and the drill bit foot valve between a drilling mode and a mining mode thus enabling several different ore bearing strata to be mined.       In a modified form of the invention a plurality of vertically spaced mining nozzles are provided and each -1a-nozzle is aligned with a different ore strata.  A hydraulic control system is provided fox controlling the hydraulic components between their drilling and mining modes, and for opening and closing the mining nozzles independently of each other.  The control system is responsive to pressure equal to or less than the system pressure.     -1b-
Patent CA-1090495-A (CA)
Inventor: WEIR DONALD A
IPC: H04Q3/00
Filed: 1977-06-30
Granted: 1980-11-25
Abstract: Abstract of the Disclosure Telephone subscriber line circuits and an all-electronic telephone exchange are described wherein Hall effect devices are incorporated to detect line looping, dialing and ring-trip.  The line circuit includes direct current feed means coupled via transformer w m dings, each of which windings are connect-ed between the direct current supply and one of a pair of line wires;  an additional winding from the transformer through which an AC ringing current is applied to the line wires;  a Hall effect device for detecting the presence of direct current in the line wires and a magnetic circuit coupled to the Hall effect device and to the transformer windings.
Patent CA-1068110-A (CA)
Inventor: SJOGREN KARL-ERIK
IPC: F27D17/00
Filed: 1977-07-13
Granted: 1979-12-18
Abstract: ABSTRACT OF THE DISCLOSURE:     Apparatus for collecting and removing smoke and fumes from a melting furnace plant comprising a platform tilt-ably supported by stationary supporting members, the tilting axis being near one edge of the platform, a furnace fixedly mounted to the platform, said furnace having a furnace chamber open at the top and accessible through a charging orifice in the platform, said furnace having a pouring spout connected to the upper part of a side wall of the furnace and located near the tilting axis.  A hood is pivotably supported by supporting members mounted to the platform and being angularly moveable towards and away from a portion of the platform surrounding the charging orifice of the platform.  The pivot axis of the hood is parallel with the tilting axis of the platform and extends at the same side of the furnace as the tilting axis.  A pair of parallel wall members are arranged on the upper surface of said platform and extend at right angles to the tilting axis. The wall members extend from the edge of the platform along the platform and have a vertical extent with respect to the plane of the platform such that in any angular position of said hood, the hood together with the said wall members and with the upper surface of the platform define a cowl facing said charging orifice.  A first air duct is mounted to said platform, and, a second air duct is stationary relative to the stationary sup-porting members for the platform.  The first air duct has an in-let orifice connected to the cowl and an outlet orifice surround-ing the tilting axis.  The outlet orifice is connected to and freely rotatable with respect to an inlet orifice of the second air duct.
Patent CA-1110484-A (CA)
Inventor: FUJIWHARA MITSUTO
IPC: G03C1/06
Filed: 1977-07-29
Granted: 1981-10-13
Abstract: ABSTRACT OF THE DISCLOSURE       Light-sensitive silver halide photographic materials to be treated with a hydroquinones-containing developing solution which material comprises a support and at least one hydrophilic colloidal layer coated thereon containing silver halide grains having an average grain size of 0.05 to 1.5 µ and a tetrazolium compound and a method of processing thereof.
Patent CA-1077551-A (CA)
Inventor: LONG ERIC L
IPC: H01H33/40
Filed: 1977-08-04
Granted: 1980-05-13
Abstract: SNAP-ACTION ELECTRIC SWITCH WITH FULCRUM MEANS FOR LIMITED CONTACT SLIDING AND POSITIVE-OFF TORQUE     Abstract of the Disclosure An electric snap-action switch is disclosed having a movable contactor with oppositely inclined camming surfaces meeting at an apex on the top thereof.  The contactor is centrally biased upwardly from below and cammed downwardly from above by a laterally movable operator traversing the inclined camming surfaces such that the contactor snaps laterally against vertical stationary contacts as the apex is crossed by the operator.  The invention includes fulcrum means effective to stop the downward movement of the contactor before the operator crosses the apex whereby a moment arm is formed from a fulcrum to the point of operator-contactor engagement such that further movement of the operator towards the apex effectuates a torque on the contactor to pivot the contactor about the fulcrum to positively break any welds or other frictional attachments between the contacts without relying on the stored energy of the carrier biasing means, thereby affording a switch having little possibility of failure in an "on" position.  The inclined camming surfaces of the contactor may be formed with compound slopes to assure constant operator pressure prior to trip point as the con-tactor pivots and increases the angle of inclination of the camming surface traversed by the operator.  Specific embodi-ments of a double-pole single-throw trigger switch and a double-pole double-throw toggle lever switch are disclosed.
Patent CA-1070292-A (CA)
Inventor: JURGENS RAINER
IPC: E21B17/07
Filed: 1977-08-12
Granted: 1980-01-22
Abstract: Abstract of the Disclosure The specification describes a shock absorber for deep hole drill pipe  which can be installed in the pipe coaxially as an intermediate part.  The shock absorber comprises an outer pipe part and an inner pipe part which are movable coaxially relative to one another and are secured against twisting by torque transfer means.  Located between the outer pipe part and the inner pipe part are a plurality of ring-shaped spring elements stacked on top of one another.          Hydraulic fluid is also sealed within the annular chamber.          The spring elements are divided into at least two parallel acting spring columns which are housed in spring chambers so as to communicate with one another.
Patent CA-1112361-A (CA)
Inventor: TINET CLAUDE
IPC: G11B7/26
Filed: 1977-09-23
Granted: 1981-11-10
Abstract: Abstract of the Disclosure This invention relates to the production of information carriers on which the information is recorded along a track ; the process of making the information carrier comprises a first step of materialising the track itself before recording any information by forming a groove in an auxiliary layer, the track thus being capable of being optically detected, and a second step of recording the information in a photosensitive layer in contact with the auxiliary layer along the track previously formed.
Patent CA-1076468-A (CA)
Title: Gas-heating appliance
Inventor: WARDT VOLKER
IPC: F23D14/26
Filed: 1977-10-11
Granted: 1980-04-29
Abstract: ABSTRACT OF DISCLOSURE     A gas heating appliance of the kind having a gripping handle through which fuel is supplied to a common feed pipe carrying a plurality of burners.  Each burner has a separate nozzle branched off the feed pipe and a pair of opposing curved baffle walls are provided at each nozzle, the walls of each pair being separated by gaps at each nozzle, all the gaps being in mutual alignment.  The appliance of the invention is particularly applicable to the heating of plastic foil type materials.
Patent CA-1076929-A (CA)
Inventor: BROWN VAIKAI K
IPC: B60K28/00
Filed: 1977-10-31
Granted: 1980-05-06
Abstract: CREEPER-DEADMAN                    Abstract of the Disclosure A combined creeper and safety control system for an industrial lift truck or the like includes a transmission override or creep control valve normally biased to a disabling position with means for selectively connecting the creeper control valve member to be operated by the operator and including a control system responsive to the pres-ence of an operator on the vehicle seat for activating the control circuit whereby the control valve may be connected to the transmission creeper and disabling control member for thereby providing operator control of the transmission.  The control system operates automatically upon the absence of the operator on the vehicle seat to automatically disengage the control member from the creeper valve thereby permitting the valve to be biased automatically to its disabling position.
Patent CA-1075254-A (CA)
Inventor: RUTLEDGE THOMAS F
IPC: C07C46/08
Filed: 1977-11-21
Granted: 1980-04-08
Abstract: Abstract of the Disclosure Carbon-carbon coupled self-condensation products obtained by the oxidative coupling of alklphenols are prepared by contacting an aqueous mixture of an alkyl phenol with oxygen in the presence of sufficient alkaline material to sustain a pH in the range of 8.5-9.5 during the oxidative coupling reaction and a catalyst system comprising certain imino acid chelates of Cu2, Ni2, Co2, Co3, Cr3, Mn2 and Fe3.  The mixture may optionally contain a surfactant.
Patent CA-1117906-A (CA)
Inventor: SERVAS FRANCIS M
IPC: A61M5/162
Filed: 1977-12-30
Granted: 1982-02-09
Abstract: J&J 891 IMPROVED BLOOD FILTER            Abstract of Disclosure In a blood filter of the type having a blood inlet spike which is to be inserted in a blood bag the improvement comprising the outer surface of the blood inlet spike having a roughness of from about 50 to 200 microinches.
Patent CA-1060232-A (CA)
Inventor: MELLES HAROLD W
IPC: F16H47/04
Filed: 1977-12-30
Granted: 1979-08-14
Abstract: HYDROMECHANICAL TRANSMISSION WITH OVERSPEED LIMITED VARIABLE DRIVE     ABSTRACT OF THE DISCLOSURE         The operational speed of a fluid drive unit in a hydromechanical transmission is limited by means of an overspeed preventing, one-way clutch establishing a positive drive connection between torque transmitting elements of the hydromechanical transmission.  Two power paths are established between the planetary gear unit and the input shaft of the transmission to drive an output shaft at a variable drive ratio controlled by a variable displacement type of fluid drive unit.  One of the power paths is established through fixed ratio gearing while the other power path is established through the fluid drive units while operating within a speed ratio range limited by the one-way clutch.
Patent CA-1078755-A (CA)
Inventor: SCHWEIZER EDUARD H
IPC: B42F17/00
Filed: 1978-02-14
Granted: 1980-06-03
Abstract: ABSTRACT OF THE DISCLOSURE A storage device for storing card-like objects. for example photographs.  The device is in the form of a cassette-like container in which the objects are stacked upright in a rear section comprising the base. lower parts of each side wall and the rear wall of the cassette. A first section of the cassette is pivoted about the front edge of the base and comprises at least part of the top. the front wall and upper parts of the side walls complementary with the side wall lower parts.  In the open condition of the cassette photographs can readily be turned forward  one by one to stack face downwards on the front section. A plurality of such cassettes may be pivotally supported in a rectangular frame, one behind the other. so that the contents of each cassette can be readily inspected in turn.
Patent CA-1091888-A (CA)
Inventor: FREHNER ROLAND
IPC: H02G7/00
Filed: 1978-02-27
Granted: 1980-12-23
Abstract: ABSTRACT OF THE DISCLOSURE     A pole and a method for its production are provided herein.  The pole which has a hyperboloid shape, the nar-rowest point of cross section of which being at the tip of the pole, said pole comprising: a hollow body constructed of fibre-reinforced plastic, wherein the fibrous reinforce-ment comprises strand material which is wound parallel and diagonal to the axis of the pole, and further wherein said pole structure comprises several alyers of reinforcement; wherein a first of said layers adjoining the internal hollow cavity of said pole comprises strand material running par-allel to the axis of said pole; and wherein each alternating other layer comprises strand material which is wound diag-onally to said first layer.  It is preferably produced by a method which comprises forming a winding core onto which a resin impregnated strand material is wound, wherein said reinforcing members are annular.  By this invention, there-fore poles are provided which overcome the disadvantages of wooden or steel poles in a convenient and inexpensive manner.
Patent CA-1124442-A (CA)
Title: Aqueous coatings based on epoxy ester  copolymers
Inventor: SEKMAKAS KAZYS
IPC: C08F299/00
Filed: 1978-03-15
Granted: 1982-05-25
Abstract: ABSTRACT OF THE DISCLOSURE Aqueous coatings particularly adapted for interior sanitary can use are provided in which the resin solids are constituted by a solution copolymer of a resin-ous polyepoxide esterified to be epoxy-free with from about 0.3 to about 1.5 moles of at least one monocarboxylic acid containing conjugated ethylenic unsaturation per mol of polyepoxide.  This esterified polyepoxide is Diels Alder adducted with from 3% to 10%, based on the weight of the copolymer, of an ethylenically unsaturated dicarboxylic acid, and this adduct is copolymerized with from 10% to 50% based on the weight of the copolymer, of monoethy-lenically unsaturated nonreactive monomer containing a terminal ethylenic group, such as styrene or vinyl toluene. This copolymer can be dispersed in water with the aid of a volatile base and aminoplast or phenoplast resin can be incorporated.
Patent CA-1067838-A (CA)
Inventor: KIRSCH ANDREW F
IPC: B66B5/02
Filed: 1978-04-04
Granted: 1979-12-11
Abstract: ELEVATOR SYSTEM              ABSTRACT OF THE DISCLOSURE         An elevator system including apparatus for detect-ing mechanical damage to the elevator system, such as might be caused by an earthquake.  A cable strung in the hoistway is reeved about a plurality of sheaves carried by the coun-terweight.  Normal operation of the counterweight maintains a predetermined tension in the cable, which predetermined tension is used to maintain a switch in a first condition.          Abnormal movement of the counterweight outside of its verti-cal travel path changes the tension in the cable and oper-ates the switch to a second condition which modifies the operation of the elevator system.
Patent CA-1090836-A (CA)
Inventor: RAY JAMES A
IPC: C04B24/00
Filed: 1978-04-04
Granted: 1980-12-02
Abstract: IMPROVED HYDRAULIC CEMENT MIXES AND PROCESS FOR IMPROVING HYDRAULIC CEMENT MIXES     Abstract of the Disclosure A hydraulic cement mix including hydraulic cement, aggre-gate, sufficient water to effect hydraulic setting of the cement, and an additive comprising glycerophosphoric acid or its salts, such as calcium, magnesium, potassium and sodium glycerophosphate, wherein the addi-tive is present in an amount sufficient to increase the strength of the mix when hardened, generally in an amount of up to 0.2% by weight, prefer-ably in an amount of between about 0. 005% by weight and 0.2% by weight based upon the weight of the cement, with the range 0.01% to 0.l% by weight also being preferred.
Patent CA-1106119-A (CA)
Title: Procedes pour l'obtention de corps creux orientes en matiere thermoplastique
Inventor: BONNEBAT CLAUDE
IPC: B29C35/16
Filed: 1978-05-03
Granted: 1981-08-04
Abstract: Procédé de fabrication de corps creux biorientés en matière thermoplastique par biétirage-soufflage dans un moule à partir d'une feuille, préforme ou paraison portée à la température de biorientation.  Ce procédé est caractérisé en ce que le matériau est maintenu ou porté, au moyen de la pression interne au contact de la paroi du moule de soufflage chaud, à une température voisine de la température d'orientation effective ou au maximum jusqu'à 40.degree.C supérieure à la température minimale d'orientation compatible avec le procédé de formage puis le corps creux formé et thermostabilisé partiellement est refroidi ou resoufflé avant relachement définitif de la pression interne et démoulage. Le procédé selon l'invention est applicable aux bouteilles et récipients, notamment de type réutilisable, à parois lisses ou nervurées pouvant être utilisés pour le conditionnement de liquides pressurisés ou de liquides chauds.
Patent CA-1110322-A (CA)
Inventor: WILSON SAMUEL R
IPC: H02H3/04
Filed: 1978-05-18
Granted: 1981-10-06
Abstract: ABSTRACT OF THE DISCLOSURE        The invention relates to an indicator and/or interrupter circuit for an electrical capacitor.  On the build-up of in-ternal pressure in the capacitor a switch is caused to operate to open a set of contacts which thereby energizes an indicat-ing lamp to provide a visual indication of a failed or over-pressure condition in the capacitor.  The opening of the switch may also cause an interruption of current flow through a holding coil and this current interruption causes a circuit interrupter to operate mechanically and thereby remove the capacitor from its circuit.
Patent CA-1105042-A (CA)
Inventor: KANAGAWA SHUICHI
IPC: C08G59/00
Filed: 1978-05-26
Granted: 1981-07-14
Abstract: EPOXY RESINS AND PROCESS                 FOR PRODUCING THE SAME            ABSTRACT OF THE DISCLOSURE          An epoxy resin of the formulae (I) and/or (II),           (I)                           (II) wherein R and R' are each a hydrogen atom or an alkyl group having 1 to 3 carbon atoms and n is a mean value satisfying an equation, 0 < n ? 2, which is excellent in heat resistance, flexibility, curability and the like, and is useful in paints, adhesives, civil engineer-ing and construction industry, electric appliances and the like.
Patent CA-1114219-A (CA)
Inventor: AMTOWER RICHARD E
IPC: B41J2/44
Filed: 1978-06-09
Granted: 1981-12-15
Abstract: Abstract A high speed automated apparatus and process for the manufacture of printing masters by electrophotographic means utilizing modulated laser light as the exposure means is disclosed.  The apparatus includes means for feeding a printing master to an exposure platen, means for generating a modulated laser exposure beam for exposing said master in image configuration, and means for developing, fixing and processing the master for use in offset printing.