baber/WOPTO huggingface dataset:
Patent CA-1138942-A (CA)
Inventor: NAYLOR THOMAS K
IPC: H03F1/52
Filed: 1979-03-06
Granted: 1983-01-04
Abstract: ABSTRACT OF THE DISCLOSURE         An input overload protection circuit particularly suited for use with a high impedance differential amplifier having two inputs is provided.  The protection circuit prevents the flow of substantially all leakage currents for input signals within the linear operating range of the amplifier, and includes a first and second serial plurality of diode-action clamping means, such as diodes, connected respectively between the first and second input conductors to the amplifier input and a third conductor connected to a reference potential.  Driven guard means operate to apply the voltage appearing on the respective first and second input conductors at their junction with the respective first and second clamping means to the respective first and second plurality of clamping means intermediate the respective ends thereof, thereby to substantially prevent leakage current from flowing through the clamping means from the pair of conductors.
Patent CA-1120056-A (CA)
Inventor: SCHEP RAYMOND A
IPC: C07C63/26
Filed: 1979-03-05
Granted: 1982-03-16
Abstract: ?-77 /js PROCESS FOR PRODUCING ISOMERIZED AROMATIC      CARBOXYLIC ACIDS AND TEREPHTHALIC ACID                               ABSTRACT     Isomerized aromatic carboxylic acid is produced from benzoic acid and another aromatic material by treating a mixture of an aromatic material, water, and a water soluble reagent comprising a Group Ia or IIa metal, the reagent producing an alkaline solution by hydrolysis, with oxygen, under conditions sufficient to convert at least a portion of the aromatic material to an aromatic carboxylic acid salt of the metal of the reagent; adding benzoic acid to the mixture; and isomerizing the aromatic carboxylic acid salt by heating without converting the aromatic carboxylic acid salt to an aromatic carboxylic acid salt of a different Group Ia or IIa metal prior to isomerizing.  The isomerized aromatic carboxylic acid salt is then converted to isomerized aromatic carboxylic acid and the reagent is regenerated.  The isomerized aromatic carboxylic acid is recovered and the reagent is recycled to supply a portion of the reagent required for producing said aromatic carboxylic acid salt.     In an alternate embodiment, the benzoic acid is added to the mixture and is in the mixture while the mixture is treated with oxygen and the soluble reagent.     In another embodiment, the water soluble reagent comprises a Group Ia or IIa metal formate, acetate, or propionate.     In another embodiment, the isomerized aromatic carboxylic acid salt is treated with an acid of the reagent to convert the isomerized aromatic carboxylic acid salt to an isomerized aromatic carboxylic acid precipitate and the reagent.     In another embodiment, the water soluble reagent is potassium carbonate, or potassium bicarbonate or mixtures thereof.     The invention is especially useful for producing tereph-thalic acid.
Patent CA-1092544-A (CA)
Inventor: DI ROSA GAETANO
IPC: B29B11/02
Filed: 1979-04-04
Granted: 1980-12-30
Abstract: ABSTRACT     A machine for the automatic preparation of proportions of different caoutchouc blocks for filler mixtures in rubber manufacture has conveyor lines for the different kinds of caoutchouc block, each including a measuring conveyor and a block-weighing conveyor.  A movable band saw cuts off portions of the blocks projecting from the measuring conveyors whilst the latter are stationary, and a storage unit disposed downstream of the conveyor lines stores excess portions of blocks severed in one measuring to deliver them to a collector conveyor during a successive cycle, under control of a processor which memorises the required weights of the different kinds of caoutchouc and controls the conveyors, the cutting unit and the storage unit in dependence upon the stored data and data sent to it by the blockweighing conveyors to give the required proportions.
Patent CA-1125469-A (CA)
Inventor: SCHWARZ GEORG
IPC: B29C45/00
Filed: 1979-04-06
Granted: 1982-06-15
Abstract: ABSTRACT OF THE DISCLOSURE                  Toggle lever machine A device on a toggle lever injection moulding machine with two mould  carrier plates, one of said mould carrier plates is movably mounted on traverses and linked to a hinge plate by means of a toggle lever mechanism. For setting the mould locking force the hinge plate is by means of a motor adjustable in the longitudinal direction of said traverses. A tensometer is provided for one of said traverses, the output of said tensometer being connected with a processing device controlling said motor.
Patent CA-1131451-A (CA)
Title: Override system for glass forming  machinery
Inventor: WOOD CHARLES L
IPC: G05B23/02
Filed: 1979-04-19
Granted: 1982-09-14
Abstract: ABSTRACT OF THE DISCLOSURE         A glass forming machine having a plurality of sections each of which includes a plurality of movable components which operate in timed relationship with respect to one another.  An electronic control system effects the automatic synchronous operation of the various sections of the machine to thereby automatically and continuously form hollow glass articles.  An auto-matic override system monitors each of the plurality of sections to determine whether each of the plurality of movable components are in the proper position at any given time.  If the aforementioned movable components are not in the proper position at any given time, the machine is either stopped or the operation thereof modified to appropriately correct the operation of the machine.
Patent CA-1126561-A (CA)
Title: Range synchronized flash photographic apparatus  and method for achieving optimum flash exposure
Inventor: BIBER CONRAD H
IPC: G03B7/16
Filed: 1979-04-20
Granted: 1982-06-29
Abstract: ABSTRACT OF THE DISCLOSURE         An image recording apparatus and method employing a diaphragm shutter having a time variable exposure aperture with flash firing, following actuation of the shutter, after a time interval dependent on subject range.  The functional relationship between the time interval and subject range establishes a parametric relationship between the brightness of the subject due to its flash illumination and the scan time of the diaphragm shutter.  The inverse of this parametric relationship constitutes the timewise variation in the exposure aperture area of the shutter.  Consequently, whenever the subject is within a predetermined maximum distance from the camera, dependent upon the maximum aperture area attainable by the shutter, the instantaneous product of subject brightness and aperture area will be a constant with the result that proper exposure of the photographic film  is  achieved independent of the subject range.
Patent CA-1124928-A (CA)
Inventor: SZEJTLI JOZSEF
IPC: C08L29/00
Filed: 1979-07-13
Granted: 1982-06-01
Abstract: ABSTRACT OF THE DISCLOSURE     The present invention  conoerns new cyclodextrin-polyvinyl alcohol polymers capable of forming inclusion complexes.  The preparation of said polymers by cross-linking a cyclodextrin, a mixture of cyclodextrins, or carbohydrate mixtures containing cyclodextrins in the presence of polyvinyl alcohol, polyvinyl acetate or a polyvinyl alcohol-polyvinyl acetate copolymer with a polyfunctional coupling reactant capable of reacting with the cyclo-dextrins and with the polymers present is also within the scope of the inven tion.
Patent CA-1113031-A (CA)
Inventor: SERAGNOLI ENZO
IPC: B65B35/04
Filed: 1979-07-20
Granted: 1981-11-24
Abstract: ABSTRACT         A variable capacity store or reservoir for rod or bar shaped articles, particularly cigarettes, in which fixed support member in the form of a screw of substan-tially vertical axis supports a movable member in the form of a nut screw coupled to said fixed member, said movable member supporting a helical wall arranged to support at least one layer of said bar shaped articles disposed facing and radial to said fixed member;  reversible drive means being provided for rotating said movable member with respect to said fixed member;  and a loading-unloading station for said bar shaped articles being disposed in a fixed position relative to said fixed member.
Patent CA-1134529-A (CA)
Title: Compositions saturees reticulables pour  peinture en poudre
Inventor: BERNELIN DANIEL
IPC: C09D5/03
Filed: 1979-07-31
Granted: 1982-10-26
Abstract: PRECIS DE LA DIVULGATION:         Composition saturée réticulable pour liant de peinture en poudre comprenant au moins une résine saturée réticulable de polyester à prédominance de fonctions carboxyli-ques et au moins un réticulant de la résine à fonctions époxyde.          La composition selon l'invention est caractérisée en ce qu'elle contient en outre un oxyde de métal choisi parmi le zinc, le cadmium, le magnésium, le fer II et les métaux alcalinoterreux, et un catalyseur constitué d'un sel organique d'un métal de valence égale ou supérieure à deux.  Cette composition permet d'obtenir des peintures en poudre donnant sur métal des revête-ments à propriétés mécaniques améliorés.
Patent CA-1112999-A (CA)
Title: Method for recovering subsurface earth substances
Inventor: ALLEN JOSEPH C
IPC: E21B43/30
Filed: 1979-08-21
Granted: 1981-11-24
Abstract: METHOD FOR RECOVERING SUBSURFACE EARTH SUBSTANCES           ABSTRACT OF THE DISCLOSURE           This invention relates to methods and systems for recovering high viscosity oils, petroleum substances and other minerals from subsurface earth formations.  In par-ticular, one or more large diameter shaft holes are provided which preferably terminate in an enlarged subterranean chamber.  A plurality of drill holes are provided, with perforated piping which extend radially from the chamber into the formation, and from which oil and the like may be recovered.  It is a particular feature of this invention to provide means and methods for injecting a mixture of steam and a noncondensable gas into the drill holes, whereby the driving mechanism of the formation may be selectively maintained or enhanced at the same time the viscosity of the oil in the formation is reduced.
Patent CA-1091550-A (CA)
Inventor: ALLEN RICHARD C
IPC: B27D3/00
Filed: 1979-09-06
Granted: 1980-12-16
Abstract: Abstract of the Disclosure A heated metal plate drying system for drying either green veneer or partially dried veneer can have a plurality of modular hot presses mounted on a frame. At a loading station, individual sheets of veneer to be dried or redried are fed into a hot press, and at an unloading station the dried veneer sheets are unloaded from the system. Within each individual modular hot press, a direct contact drying process occurs that functions to reduce the moisture content of a veneer sheet down to the desired uniform level such as within a range of from 1 to 10%. The drying process accepts veneer of different species, thickness, and beginning moisture contents and the controlled process variables include contact time, temperature and pressure. Each individual modular press can be multi-opening and has the ability to open and close on command. Specially designed heated metal plates are part of each press and each plate has substantially parallel grooves on at least one surface. The modular presses are mounted on the frame such that they may be tilted at the unloading station to facilitate unloading of the dried veneer sheets. At the loading station, a loading apparatus functions to sequentially feed individual veneer sheets into the openings. The loading apparatus is pivotally mounted. Also provided is an aligning apparatus for ensuring proper alignment of each veneer sheet within its respective opening after being loaded. The modular presses in one embodiment are mounted on a carousel frame structure that is rotatable on a main bearing so each modular press indexes past the loading and unloading stations.
Patent CA-1113936-A (CA)
Inventor: JACKMAN DENNIS E
IPC: B01J23/00
Filed: 1979-09-20
Granted: 1981-12-08
Abstract: Abstract of the Disclosure Sodium 3,3-dimethyl-2-hydroxybutyrate and ruthenium dioxide hydrate are added to water, the pH rendered alkaline, and sodium hypochlorite is slowly added to produce sodium 3,3-dimethyl-2-oxybutyrate in high yield and purity.  The solid catalyst is filtered off and may be re-used while the filtrate can be directly used in further synthesis.
Patent CA-1141303-A (CA)
Inventor: ENGEBRETSON MARK E
IPC: A63J17/00
Filed: 1979-09-26
Granted: 1983-02-15
Abstract: GFl-4-6225 METHOD AND SYSTEM OF CONTROLLING SOUND   AND EFFECTS DEVICES BY A FILM STRIP        Abstract of the Disclosure A method and system of blending the effective audio sensation in a theater having a plurality of audio speakers driven by a single program signal recorded on a motion picture film strip as the film strip is being projected in the theater, which method and system includes the driving of each of the speakers in the theater with a common program signal through an amplifier having a gain controlled by an analog electrical signal whereby the level of the analog signal determines the volume of the program signal at each of the speakers and creating a digital gain control signal for each of the speakers in response to a control signal recorded periodically on the film strip at locations on the film strip determined by the desired volume of a given speaker at a given time which digital gain control signal is converted to an analog signal and is used for controlling the driving amplifiers of each of the speakers in the theater in which the film is being pro-jected.
Patent CA-1123484-A (CA)
Inventor: LAND EDWIN H
IPC: H05B41/32
Filed: 1979-10-12
Granted: 1982-05-11
Abstract: ABSTRACT OF THE INVENTION An electronic flash device is powered from a high voltage, low internal impedance battery which may be connected directly across a flash discharge tube to provide a flash discharge current through the tube without the use of a primary storage capacitor.
Patent CA-1132202-A (CA)
Title: Device for welding together two bars on their  front sides
Inventor: ZOLLINGER HANS-RUDOLF
IPC: B23K11/04
Filed: 1979-10-31
Granted: 1982-09-21
Abstract: ABSTRACT OF THE DISCLOSURE A welding apparatus including, generally, a vertical clamping assembly having an upper and a lower clamping assembly for each of two rail sections to be welded together.  These vertical clamping assemblies clamp and vertically align the running surfaces of the two rail sections, by establishing the running surfaces at a predetermined stop level. The welding apparatus also includes a horizontal centering and aligning apparatus which has a first pair of clamping arms which engage the rail base and pre-center the rail sections with respect to one another and to the welding apparatus.  The apparatus also includes a pair of spaced apart clamping arms associated with each of the rail sections which are operable to both laterally clamp the rail heads of the respective rail sections and to horizontally or laterally align the rail sections with respect to one another.  Once aligned, the ends of the rail sections are welded together.
Patent CA-1125294-A (CA)
Title: Spiro-polycyclicimidazolidinedione derivatives
Inventor: SARGES REINHARD
IPC: C07D495/10
Filed: 1979-11-16
Granted: 1982-06-08
Abstract: ABSTRACT OF THE DISCLOSURE       Novel spiro-polycyclicimidazolidinedione derivatives useful as aldose reductase inhibitors and as therapeutic agents for the treatment of chronic diabetic complications are disclosed.          The derivatives include 2',3'-dihydro-spirolimidazolidine-4,4'-[4'H]-naphtho[1,2-b]pyran]-2,5-dione, 2',3'-dihydro-spiro[imidazoli-dine-4,4'-[4'H]-naphtho[1,-b]thiopyran-2,5-dione, 1',2',3',4'-tetrahydro-spiro[imidazolidine-4,1'benz[a]anthracene]-2,5-dione, 2',3'-dihydro-spiro[imidazolidine-4,1'-phenalene]-2,5-dione, 1',2',3',4'-tetrahydro-spiro[imidazolidine-4,1'-phenanthrenel-2,5-dione, the 2,1 isomers of the 2',3'-dihydro-4'H-pyran and 2',3'-dihydro-4'H-thiopyran derivatives, the 2',3'-dihydro-4'H-anthracenopyran and 2',3'-dihydro-4'H-anthracenothiopyran derivatives, the spiro-4,4' isomer of the tetrahydrophenanthrene derivative, the [b] isomer of the benzanthracene derivative and the mono or disubstituted 2',3' dihydro-4'H-naphthopyran, 2',3'-dihydro-4'H-naphthothiopyran and tetrahydrophenanthrene derivatives.  The novel compounds correspond generally to the formula                 I   wherein A is nayhth-.alpha.,.beta.-o of formula III                                     III                               anthracen-.alpha.,.beta.-o of formula IV                                       IV   or substituted naphth-.alpha.,.beta.-o having 1 or 2 identical substituents selected from methyl, chloro or bromo; and Y is CH2, S, SO, SO2 or O; or A and Y taken together are naphth-.alpha.,.beta.-o of the formula                 V
Patent CA-1130616-A (CA)
Inventor: KUPCAK KENNETH S
IPC: F16G11/12
Filed: 1979-12-04
Granted: 1982-08-31
Abstract: Inventors:  Kenneth S. Kupcak and Rudolph F. Piecuch Title:   REINFORCED PLASTIC YOKE     ABSTRACT OF THE DISCLOSURE   Reinforced plastic yoke includes a collar portion and longitudinally extending leg portions, with a metal strip reinforcing insert having a pair of longitudinally extending legs and a web embedded respectively in the legs and collar of the yoke.  The legs of the metal reinforcing strip at their distal ends each include openings concentric with clevis pin openings in the legs of the yoke and the web includes an opening which accommodates a longitudinally extending bore in the collar portion.  Additionally, an internally threaded metal insert fitting may be provided in the yoke collar portion extending axially through the web opening in  the metal strip rein-forcing insert, with mechanical locks to prevent relative movement between the fitting, collar portion, and metal insert.
Patent CA-1115810-A (CA)
Inventor: LEONARD DONALD J
IPC: F23N5/00
Filed: 1979-12-17
Granted: 1982-01-05
Abstract: ABSTRACT OF THE DISCLOSURE Control method and apparatus for optimizing the operation of a natural draft combustion zone through which a conduit containing a process fluid to be heated passes, by decreasing the supply of combustion air until one or more of the following predetermined limiting conditions is reached:  maximum CO in the flue gas, minimum O2 in flue gas, minimum draft in the combustion zone, maximum tempera-ture of the outer surface of said conduit, and increase in the rate of fuel addition above a minimum amount.  When a limiting condition is reached, the supply of combustion air is increased until the limiting condition is no longer present, and the cycle then repeated.
Patent CA-1133431-A (CA)
Title: Bridge crane for the emplacement of elongate  prefabricated members of structures spanning  a multiplicity of spaced-apart supports
Inventor: ZAMBON ANTONIO
IPC: B66C17/06
Filed: 1980-01-14
Granted: 1982-10-12
Abstract: ABSTRACT OF THE DISCLOSURE        Precast beams or slabs of an elongate structure such as a bridge, viaduct or overpass are emplaced on spaced-apart piers by a bridge crane which comprises a framework consist-ing of a pair of parallel trusses interconnected by end portals and long enough to extend across three piers.  Each truss has a bottom stringer formed on its underside with tracks engaged above each pier by rollers mounted on a pair of rocker arms which are part of an undercarriage movable on transverse guide rails.  Top stringers of the trusses support a trolley carrying hoists for raising and lowering the trans-ported castings.  Longitudinal movement of the framework relative to the piers is brought about by a motor-driven cap-stan, carried on the framework, which is engaged by cables wound about deflecting rollers at the ends of the framework and on an anchor frame to which the ends of the cables are fastened, the anchor frame being secured to one of the under-carriages and carrying pulleys coacting with confronting deflecting rollers to form a tackle with a fourfold mechani-cal advantage.
Patent CA-1153217-A (CA)
Inventor: MAIOCCO GUISEPPE
IPC: B60R25/02
Filed: 1980-02-12
Granted: 1983-09-06
Abstract: Abstract of the Disclosure An antitheft device is provided for use with a reversible type key. The device includes a plate movable in a slot extending transverse to the direction of a key-receiving slot. The key entering the slot moves the plate which, in turn, pivots a lever to latch with the lock to prevent the antitheft device from becoming operative as long as the key is in the key-receiving slot. The plate has a guiding surface which rides in a plane surface on the key as the key is inserted. The plane surface on the key moves the plate and lever to the desired position.
Patent CA-1119895-A (CA)
Inventor: LANTZ HARLAN G
IPC: B60F3/00
Filed: 1980-04-21
Granted: 1982-03-16
Abstract: MULTIPLE STEP VENTED HULL        Abstract of the Disclosure A boat hull is provided with a series of steps which are angled toward the center of the hull from the front to the rear of the hull.  In order to permit easy riding up of the hull on the steps progressively, as the  speed  of  the  hull  is  increased,  the  steps  are carried over  the  side of  the hull above the normal water line of the hull when the boat is stationary.  As the power is increased, the wetted area of the hull is progressively decreased and the friction of the hull and  its resistance to forward motion is progressively decreased as the hull rides further out of the water. The principles as described  above  are applicable to airplane hulls, the wheels of amphibious vehicles, and other variations of normal type boat hulls.
Patent CA-1131559-A (CA)
Inventor: FREDD JOHN V
IPC: E21B34/14
Filed: 1980-04-30
Granted: 1982-09-14
Abstract: VALVE            Abstract of the Disclosure A valve which may be made up as a part of a tubing string, preferably by removably landing the valve in a landing nipple. The valve is of the sleeve type and the gap through the valve member is held to very close spacing when the valve member gap passes over the seals in the body and is then permitted to expand when the valve member is in open position. The valve is disclosed as a part of a testing system employing a packer, a foot valve, a seal unit and a landing nipple in which the valve is supported.
Patent CA-1153675-A (CA)
Inventor: TYTGAT DANIEL
IPC: C23F3/04
Filed: 1980-05-23
Granted: 1983-09-13
Abstract: 1. Bath for the chemical polishing of steel surfaces, which comprises, in aqueous solution, a mixture of phosphoric acid, hydrochloric acid and nitric acid, a viscosity regulator, a surface-active agent, and sulphosalicyclic acid as a brightener, characterised in that the overall normality of the mixture of acids in the aqueous solution is between 1 and 6 and the ratio of the normality of each acid in the mixture of acids to the overall normality of the mixture is between 0.05 and 0.80 in the case of phosphoric acid, between 0.15 and 0.90 in the case of hydrochloric acid and between 0.001 and 0.80 in the case of nitric acid, in that the viscosity regulator is a cellulose ether and the proportion thereof, expressed in g/litre of aqueous solution, is between 0.3 and 0.7 times the overall normality of the mixture of acids, in that the surface-active agent is an alkylpyridinium chloride and the proportion thereof, expressed in g/litre of aqueous solution, is between 0.15 and 0.45 times the overall normality of the mixture of acids, and in that the proportion of sulphosalicyclic acid, expressed in g/litre of aqueous solution, is between 0.15 and 0.40 times the overall normality of the mixture of acids.
Patent CA-1139501-A (CA)
Inventor: RIX WESLEY J
IPC: B25C3/00
Filed: 1980-07-23
Granted: 1983-01-18
Abstract: ABSTRACT OF THE DISCLOSURE    A nail holder having nail holding jaws mounted on levers pivoting at a position such that good leverage can be applied for gripping a nail, the undersides of the jaws providing a cavity receiving a ridge of corrugated roofing, the tool be-ing formed in a manner for economical manufacture from mater-ials sufficiently malleable as to withstand hammer blows, some of the levers being formed of steel bar  twisted for ease of pivotal attachment.