baber/WOPTO huggingface dataset:
Patent CA-1095607-A (CA)
Inventor: MAGENHEIM BERTRAM
IPC: B64D15/20
Filed: 1977-03-31
Granted: 1981-02-10
Abstract: ABSTRACT OF THE DISCLOSURE      The present invention relates generally to surface ice detection systems, and, more particularly, to the detectors for use in aircraft. Various techniques have been employed in the past for the detection of ice, but have all proved unreliable for one reason or another.  One prior art method utilizes forward facing orifices, the formation of ice on the orifices being detected as a decrease in pressure.  Other ice detection techniques depend on the detection of a variation in a particular mechanical or electrical parameter.  While some of these techniques may operate reason-ably satisfactorily on fixed-wing aircraft, there are additional problems posed by the detection of ice on-helicopters.  Many of the prior art techniques are incapable of being adapted for use on rotating surfaces. Consequently, no satisfactory method has heretofore been available for the detection of ice on helicopter rotor blades.  The present invention provides a system for detecting ice on exterior surfaces of aircraft by transmitting a microwave electromagnetic signal into a dielectric layer functioning as a surface waveguide, and monitoring the signals transmitted into and reflected from the waveguide.  The waveguide includes a termination element which is mismatched with the waveguide impedance, resulting in partial or total reflection of the microwave energy from the remote end of the wave-guide.  As ice builds up on the surface waveguide, the impedence or reflec-tion characteristics of the composite waveguide comprising the ice layer and the permanent surface waveguide give a reliable indication of the presence and location of the ice.
Patent CA-1050776-A (CA)
Inventor: PREUS PAUL
IPC: E02B15/06
Filed: 1977-04-27
Granted: 1979-03-20
Abstract: ABSTRACT OF THE DISCLOSURE        A high freeboard barrier for water carried pollutants includes a series of end to end con-nectable tubular boom sections with each boom section including an upstanding fin and a depend-ing skirt, and further fabric means extending from at least below the water line to substantially above the fin to thereby increase the freeboard of the barrier.  The fabric may be fireproof to reduce oil spill first damage to the barrier.  The fabric means may be of the type which extends the length of the skirt or substantially therebelow and the fabric means may be of the add-on type for use with exist-ing barriers.
Patent CA-1078866-A (CA)
Inventor: BRUST HARRY F
IPC: C07C59/40
Filed: 1977-05-02
Granted: 1980-06-03
Abstract: ABSTRACT         Phenoxyalkanoic acids, e.g. 2,4-dichlorophenoxy-acetic acid, are made by simultaneously adding equivalent amounts of haloalkanoic acid and alkali metal hydroxide to a hot mixture of about equimolar amounts of the appropriate phenol and the alkali metal salt of the phenol while distil-ling water from the reaction mixture as formed.
Patent CA-1045841-A (CA)
Inventor: STAAS FRANS A
IPC: F25B9/12
Filed: 1977-05-19
Granted: 1979-01-09
Abstract: ABSTRACT     A 3He- 4He dilution refrigerator, comprising two interconnected mixing chambers which are arranged at different levels, one end of a superleak opening into concentrated 3He in the upper mixing chamber, whilst the other end opens into a sub-space of the machine containing dilute 3He, for the supply of superfluid 4He, via the superleak, to the upper mixing chamber under theinfluence of theosmotic differential pressure prevailing across the superleak.
Patent CA-1066084-A (CA)
Inventor: REIS ROBERT D
IPC: G01L9/00
Filed: 1977-05-31
Granted: 1979-11-13
Abstract: ABSTRACT OF THE INVENTION         A transducer wherein a brush arm is supported for pivotal movement of its dicital end along a bank of terminals in a circuit where there is a common terminal and a bank of terminals by expansion and contraction of a bell.ows.  Brushes at the proximal and distal ends of the brush arm are yieldably held engaged with the bank of terminals at the distal end and the common terminal at the proximal end for adding resistances to and removing resistances from the circuit in proportion to changes in pressure.  The bellows is supported in a capsule for linear expansion and contraction and contains an open end for receiving, a plug mounting the circuit, brush arm, and linkage as a unit, into operative relation to the bellows, said linkage providinq for converting the linear movement of the bellows to rotational movement of the brush arm and for adjustment of the range or movement of the brush arm along the bank of terminals.
Patent CA-1086119-A (CA)
Inventor: CRAIG GALE M
IPC: G02B5/08
Filed: 1977-06-10
Granted: 1980-09-23
Abstract: NONGLARE REAR VIEW MIRROR           Abstract of the Disclosure A nonglare rear view mirror assembly includes a combination diaphragm and bellows and a front transparent lens on the bellows defining a variable volume chamber of opaque liquid rearwardly of the transparent lens.  A light reflective mirror is connected to a plurality of bosses on the diaphragm to define a liquid pump chamber in communication with the variable volume chamber.  The diaphragm is associated with a rigid cover to define a variable pressure space selectively connected to a source of power fluid to flex the diaphragm to direct opaque liquid from the pump chamber into the variable volume chamber behind the lens for producing a nonglare light reflection under night operation and operative under daylight conditions to flex the diaphragm to draw liquid from between the lens and mirror to locate the mirror adjacent the lens for producing greater light reflectivity.
Patent CA-1050875-A (CA)
Inventor: OLSEN JOHN H
IPC: B05B1/00
Filed: 1977-08-05
Granted: 1979-03-20
Abstract: Abstract An ultra-high pressure water jet control valve device is disclosed comprising a light-weight poppet valve assemble coupled through a lost-motion connection to a spring-returned hydraulic piston valve actuator aiding in the rapid opening and in the assured closure of the valve.  A bias spring placed under compression by the actuator return spring when hydraulic pressure on the piston is released augments the action of water pressure on the poppet valve assembly to assure automatic closure of the valve. The lost motion in the actuator connection to the valve incurring bias spring deflection when the poppet is closed provides added assurance against accidental valve opening, such as under conditions of shock and vibration.
Patent CA-1057419-A (CA)
Inventor: AYERS ROBERT L
IPC: H01L21/761
Filed: 1977-09-26
Granted: 1979-06-26
Abstract: TECHNIQUE FOR PREVENTING FORWARD BIASED EPI-ISOLATION         DEGRADATION ABSTRACT:          Certain types of silicon integrated circuits are embodied as having diffused isolation regions surrounding epitaxial regions.  Although normally operated in a reverse bias mode, such regions may become forward biased when sourcing current for certain circuit applications.  Certain types of ionized impurities lodged in the isolation region can then migrate into the depletion region and the epitaxial region of the device during a forward bias condition.  Such contaminants can be expected to produce generation-recombination centers in the depletion layer of the device which, when the isolation region is then reverse biased, will produce significant increases in junction leakage current.  The magnitude of this reverse bias leakage current will depend upon both the contaminant concentration and the width of the depletion region.     The leakage problem is prevented by adding the guard ring to the isolation region of the same conductivity type as the isolation region.  The guard ring can be added at the time of the base diffusion in bipolar technology.  The guard ring prevents an ohmic electric field from extending into the original isolation region where the ionic impurities are concentrated, preventing diffusion of the impurities into the epitaxial region.
Patent CA-1087861-A (CA)
Inventor: WUTH WOLFGANG
IPC: C22B19/30
Filed: 1977-09-29
Granted: 1980-10-21
Abstract: ABSTRACT OF THE DISCLOSURE             A method for the continuous or intermittent treat-ment of molten slag, especially slag containing heavy-metal oxides, in order to recover valuable metals and compounds there-of contained in the slag by causing the valuable metals and compounds to settle under the molten slag or to volatilize out of the slag.  Unlike a top-blowing process utilized in steel making, no attempt is made according to the present invention to obtain a three-phase slag-gas-metal mix.  Rather, what is created is a specific, torus-like laminar flow with a definite transfer of metal and heat.  This type of flow is unknown in the prior art, even in corresponding processes for producing and refining non-ferrous metals.  The method according to the present invention comprises the steps of:  blowing a jet of reaction gases through a nozzle approximately perpendicularly onto the slag with sufficient force to produce in the molten slag a laminar flow substantially in the form of a torus which rotates about a depression caused by a blast at a stagnation point of the jet.  The laminar flow in conjunction with the jet of gas produces a reaction unit defined by an area of a convective system and having a definite transfer of material, a diameter of which, in the area of the molten slag at right angles to a direction of the jet, is approximately two to five blast-depression diameters, whereas a depth thereof is approx-imately half that dimension.
Patent CA-1101732-A (CA)
Inventor: STEWART JOHN V
IPC: G03F1/08
Filed: 1977-09-30
Granted: 1981-05-26
Abstract: Method for obtaining an engravers template having a desired pattern therein with engraved portions and raised portions.  An aluminum sheet is provided having an aluminum oxide layer on one side and a plastic layer on the opposite side. The desired engraved pattern is etched through the oxide layer and through the aluminum sheet.  In accordance with a further embodiment, a further aluminum sheet can be disposed on the other side of the plastic layer, and an aluminum oxide layer is formed on the free side of the second aluminum sheet.  The second oxide layer is covered with a further plastic layer to protect the second oxide layer during the etching steps.
Patent CA-1088636-A (CA)
Inventor: ASCHWANDEN FELIX
IPC: H03L7/199
Filed: 1977-10-25
Granted: 1980-10-28
Abstract: Abstract of the Disclosure A synchronizing system is provided for synchronizing an oscillator having two or more substantially different frequencies, developed by division of the oscillator output frequency, from an external reference signal.  The external reference is utilized as one input to a phase detector and to reset the divider.  The divider is re-enabled by the external reference so that the next divider output is applied to the other input of the phase detector.  The two inputs to the phase detector are now timed within a narrow range, which is within the pull-in range of the control loop, which minimizes the phase lock up time for synchronizing to the external reference.
Patent CA-1090605-A (CA)
Inventor: GALLO MARIO
IPC: G01L1/10
Filed: 1977-10-27
Granted: 1980-12-02
Abstract: ABSTRACT A mass and force meter with a frame, a load-support and a measuring system, wherein the mass or force to be measured acts indirectly on the tension of two transversally vibrating, pre-loaded strings ex-cited by electronical means, so that the resultant frequency changes serve for calculating the magnitude of said mass or force in a com-puting device, both strings, a first transmission element for the transmission of a pre-loaded force and a second transmission ele-ment for the transmission of a force depending on the load to be measured being fixed to a force distributor, which id guided in a statically determined way relatively to the frame by means of the two strings and of at least one guide with respect to the pre-load-ing force and to the force depending on the load to be measured, said guide being elastic and under a bending pre-tension and able to transmit moments, so that it generates the pre-load of the strings and transmit it to the force distributor.
Patent CA-1074991-A (CA)
Inventor: OLSSON CONNY E
IPC: G01B5/20
Filed: 1977-11-21
Granted: 1980-04-08
Abstract: CANADIAN PATENT APPLICATION                              OF                       CONNY EINAR OLSSON                              FOR     CHECKING AND MEASUREMENT DEVICE FOR AUTOMOBILE CHASSIS     Abstract of the Disclosure The disclosure relates to the automotive art in general and in particular to a checking and measurement device for auto-mobile chassis, comprising measurement scale carriers which are adjustable in correspondence with the spatial position of mea-surement points in a vehicle chassis. Each one of the measure-ment scale carriers consists of a transverse arm disposed for measuring in the transverse direction of the chassis, the arms having, at each end portion, a guide for a releasable measure-ment rod which may be connected to each respective arm end portion for measuring in the vertical direction of the chassis and is of adjustable length, which has means for pivotal sus-pension of the measurement rod in a chassis measurement point and means for adjusting the measurement rod in the transverse direction of the arm for measuring in the transverse direction of the chassis. The checking and measurement device is sus-pendable by means of these measurement rods in its entirity in measurement points in the chassis and is furnished with a de-vice for measuring in the longitudinal direction of the chassis.
Patent CA-1090535-A (CA)
Inventor: WOYTEK ANDREW J
IPC: C01B21/083
Filed: 1978-04-19
Granted: 1980-12-02
Abstract: PREPARATION OF NITROGEN TRIFLUORIDE     ABSTRACT OF THE DISCLOSURE         Nitrogen triflouride is prepared by passing elemental fluorine in intimate contact with liquid phase ammonium acid fluoride maintained at a temperature above its melting point but below about 400°F for a time sufficient to effect reaction.          Generally, ammonia is injected into the ammonium acid fluoride along with the fluorine to maintain a molar ratio of by-product hydrogen fluoride to ammonia of approximately 2.0 to 2.5.
Patent CA-1076186-A (CA)
Inventor: ASCOLI ENZO
IPC: B26B19/28
Filed: 1978-05-01
Granted: 1980-04-22
Abstract: A VIBRATORY ELECTROMAGNETIC MOTOR            Abstract of the Disclosure A vibratory electromagnetic motor includes a stator unit, a first rotatable armature and a second rotatable armature.  The armatures and the stator unit are arranged to reduce motor noise and vibrations when the armatures synchronously rotate in opposite directions in response to a magnetic force.  A resilient coupling member is connected between the armatures for combining drive power generated by the first rotating armature with drive power generated by the second rotating armature.
Patent CA-1093572-A (CA)
Inventor: HECHENBLEIKNER INGENUIN
IPC: C07F9/38
Filed: 1978-05-01
Granted: 1981-01-13
Abstract: ARBUZOV REARRANGEMENT OF TRIPHEMYL PHOSPHITE     Abstract of the Disclosure A process for the preparation of diphenyl phenylphosphonate.  The process involves an Arbuzov-type rearrangement of triphenyl phosphite and is characterized by a relatively high reaction temperature.
Patent CA-1088073-A (CA)
Inventor: SARGES REINHARD
IPC: A61K31/4245
Filed: 1978-05-19
Granted: 1980-10-21
Abstract: HYDANTOIN THERAPEUTIC AGENTS                 Abstract of the Disclosure Several novel dextrotatory spiro-hydantoin compounds have been obtained by resolving the corresponding dl-compounds which are initially synthesized by first condensing the appropriate carbonyl ring compound, such as the corresponding 4-chromanone or thiochroman-4-one, as the case may be, with potassium cyanide and ammonium carbonate.  The resulting optically-active hydantoin derivatives, such as d-6-fluoro-spiro-[chroman-4,4'-imidazolidine]-2',5'-dione andd-6'-fluoro-spiro-[imidazolidine-4,4'-thiochroman]]-2,5-dione, are particularly useful in preventing or alleviating chronic diabetic complications.
Patent CA-1100334-A (CA)
Inventor: WARLAND GEORGE W
IPC: F16H55/30
Filed: 1978-06-22
Granted: 1981-05-05
Abstract: ROTARY DRIVE MEMBER                 ABSTRACT OF THE DISCLOSURE          A sprocket gear assembly comprising a sheet metal cup-shaped sprocket member having teeth formed from the sheet metal on an annular outer portion and a central hub having splines formed therein, the hub and outer portion being separated by a radial flange on each side of the sprocket assembly.  The radial flange on one side is integral with the annular outer portion, and the hub may either be integral therewith and secured by a disc forming the other radial flange, or may be integral with the other radial flange and secured to said one radial flange, with the other radial flange welded to the annular outer portion.  Alternatively the hub may be formed as a sheet metal component and is secured to the cup-shaped member.
Patent CA-1092779-A (CA)
Inventor: ATKINS LARRY P
IPC: B22D11/047
Filed: 1978-06-27
Granted: 1981-01-06
Abstract: Abstract of the Disclosure Apparatus for continuously casting lead strip at various rates upwards of about 8 ft. per minute including a nonturbulent, constant-head, constant-temperature source of dross-free melt, an open-ended casting nozzle, an insulator thermally isolating the nozzle from the source and an aromatic polyimide seal at the inlet of the nozzle.  Melt is pumped upwardly through a standpipe which is open midway to the nozzle.          An adjustable weir atop the standpipe controls the metalostatic head above the casting nozzle, and a reversible pump permits ready aborting of a casting run.
Patent CA-1073343-A (CA)
Inventor: SERAGNOLI ENZO
IPC: B26D7/01
Filed: 1978-07-04
Granted: 1980-03-11
Abstract: ABSTRACT OF THE INVENTION            A feeding and cutting device in which a continuous web of sheet material provided with   spaced transverse central slits is step advanced by feeding means along a web path to    cutting means comprising a movable blade and a stationary blade arranged on opposite sides of said web path on a fixed cutting plane substantially at right angles to said web path, said feeding means advancing the web so that, at the end of each advancing step, one slit is located a short distance downstream from said cutting plane;  reciprocating pushing means being operable, at the end of each advancing step, in a direction towards said stationary blade and parallel to said cutting plane to engage the web downstream from said one slit so as to depress the leading edge thereof;  and return feeding means being operable, in a direction opposite to said feeding means and before operation of said movable blade, to displace said web backwards until said depressed leading edge engages a lateral downstream edge of said stationary blade.
Patent CA-1129134-A (CA)
Inventor: GENTH HERMANN
IPC: C08K5/3447
Filed: 1978-08-17
Granted: 1982-08-03
Abstract: Bayer 3423-LH:rg MICROBICIDAL ORGANOPOLYSILOXANE MOLDING             COMPOSITIONS                    Abstract of the Disclosure An organopolysiloxane composition having a microbicidal action comprising an .alpha.,.omega.-dihydroxypolydiorganosiloxane and a benzimidazolyl-alkyl-carbamate of the formula   wherein R1 is an alkyl radical with 1 to 4 carbon atoms, optionally substituted by the radical -OR3, R3 is an alkyl radical with 1 to 4 carbon atoms or the phenyl radical, and R2 is hydrogen, an alkyl radical with 1 to 4 carbon atoms, halogen or nitro. Advantageously the carbamate is methylbenzimidazolylmethyl-carbamate, N-(fluorodichloromethylthio)-phthalimide, is present as a synergistic fungicide and the composition further comprises a silicon-containing crosslinking agent for the siloxane, a heavy metal salt or amino accellerant for crosslinking and an .alpha./.omega.-bis-(trimethylsiloxy)-polydimethylsiloxane.  Water per se or in atmospheric air cures the composition to a rubber elastic product resistant to microbes.     Le A 18 353
Patent CA-1115713-A (CA)
Title: Silicon-modified bis-phthalic acid  derivatives
Inventor: DARMS ROLAND
IPC: C08G73/10
Filed: 1978-09-07
Granted: 1982-01-05
Abstract: The Si-modified bis-phthalic acid derivatives according to the invention are monomeric, oligomeric of polymeric compounds.    An example of a monomeric com-pound of the invention is the amidoacid of the formula   which is formed by reacting 4,4'-diaminodiphenylmethane and 4-N,N'-bis-[3-tri-n-propoxy]-silyl-propyl]-aminophth alic anhydride in solution, in a molar ratio of 1:2.  To produce oligomeric of polymeric compounds, the reaction has to be carried out with a 3rd component, for example pyromellitic dianhdride. the products are used as adhesion promotors, for example between inorganic solids and organic resins.
Patent CA-1111042-A (CA)
Inventor: DARMS ROLAND
IPC: C08L77/00
Filed: 1978-09-07
Granted: 1981-10-20
Abstract: Abstract of the Disclosure The compounds according to the invention are Si-modified imidyl-phthalic acid derivatives of the formula                 (I) and the corresponding cyclised imide derivatives;  in the formula, A is a radical which completes to a substituted or unsubstituted imidyl group, R is a divalent organic radical, R1 and R2 are each hydrogen or a monovalent organic radical and Q, Q1 and Q2 are each a monovalent organic radical.     A typical example is 3-dimethyl-maleimidyl-phthalic acid N-(di-n-propoxymethylsilyl)-propylimide, which is obtained by reacting 3-dimethyl-maleimidyl-phthalic acid N-allylmide and di-n-propoxy-methylsilane in solution, followed by cyclisation. The products are used as adhesion promoters, for example between inorganic solids and organic resins.
Patent CA-1114357-A (CA)
Inventor: REBSDAT SIEGFRIED
IPC: C07B61/00
Filed: 1978-09-07
Granted: 1981-12-15
Abstract: PROCESS FOR IMPROVING THE ACTIVITY OF USED                SUPPORTED SILVER CATALYSTS        Abstract of the disclosure:      The activity of supported silver catalysts, which have been used for the direct oxidation of ethylene to ethylene oxide with molecular oxygen or air and to which from 1 to 1,000 parts, per 1 million parts of catalyst, of cesium and/or rubidium have been applied, is improved by washing the catalyst with an inert organic liquid prior to the application of cesium and/or rubidium.
Patent CA-1119397-A (CA)
Inventor: ARSENAULT ROBERT D
IPC: F26B15/16
Filed: 1978-09-22
Granted: 1982-03-09
Abstract: METHOD FOR PREVENTING STICKER MARKS ON ARCHITECTURAL GRADE PLYWOOD AND LUMBER                           ABSTRACT      Herein disclosed is an improved method of kiln drying architectural grade plywood and lumber which has been treated with a water borne agent.  The improved method utilizes coated wire mesh as the kiln stickers.  Use of the coated wire mesh stickers greatly reduces the incidence of sticker marks on the decorative faces of the plywood and lumber.
Patent CA-1116118-A (CA)
Inventor: COPELIN HARRY B
IPC: C07D307/08
Filed: 1978-10-31
Granted: 1982-01-12
Abstract: ABSTRACT OF THE DISCLOSURE           A process for separating one or more aliphatic alcohols selected from the group consisting of methanol, ethanol, isopropanol and tertiary butanol from a tetra-hydrofuran stream comprising tetrahydrofuran, one or more of said alcohols and optionally water by extractive dis-tillation with water.