baber/WOPTO huggingface dataset:
Patent CA-1079857-A (CA)
Inventor: JONES GARDNER D JR
IPC: H04L5/02
Filed: 1975-10-20
Granted: 1980-06-17
Abstract: MULTI-LINE, MULTI-MODE MODULATOR USING BANDWIDTH   REDUCTION FOR DIGITAL FSK AND DPSK MODULATION Abstract A multi-line multi-mode modulator uses compatible digital modulation techniques for multifrequency (MF), frequency shift keyed (FSK) and differential phase shift keyed (DPSK) modulation to achieve a multi-line multi-mode modulator which is capable of handling a plurality of lines requiring a dynamic mix of the three modulation techniques.  The compatible modulation techniques utilize bandwidth reduction schemes which enable the use of simple RC fil-ters on each output line for the sole purpose of removing the quantizing noise introduced by the digital modulation technique.
Patent CA-1036730-A (CA)
Inventor: O'NEILL JOHN F
IPC: H04Q11/04
Filed: 1975-10-23
Granted: 1978-08-15
Abstract: STATION LOOP CONTROL ARRANGEMENT  FOR TELEPHONE SWITCHING SYSTEM            Abstract of the Disclosure An arrangement for controlling the d.c. state of a subscriber's loop which has a port appearance in a time division switching network is disclosed.  Because such a network provides no metallic path between the subscriber's line port and the trunk circuit, the abandonment of the call by the trunk circuit must be detected by a trunk scanner rather than by the line circuit directly and conventionally, a processor operation being required to interpret the scanner information.  Heretofore a complex subscriber line circuit would have been required to respond to the processor operation so as to inform the station user that the call has been remotely abandoned.  The present arrangement allows the processor to reoperate the ringing relay in the subscri-ber's line circuit during an interval when the group of line circuits including that of the affected subscriber would not normally receive active ringing. The ringing relay is equipped with back contacts that disconnect the subscriber's telephone set from the remainder of his loop circuit allowing the holding bridge in the subscriber's loop to be released and allowing the line scanner to inform the processor that the line is "on-hook".  If the subscriber maintains the set off-hook when the ringing relay is released, the processor may properly return dial tone and respond to subsequent call signaling from the subscriber set.
Patent CA-1043565-A (CA)
Inventor: BETTENS JEAN-PAUL
IPC: A63H33/10
Filed: 1975-12-03
Granted: 1978-12-05
Abstract: Abstract of the Disclosure A construction kit comprises male and female elements, preferably of molded plastic material,for assembly into various model structures. The male elements have cubic bodies with studs protruding from two or more faces and the female elements are elongated U-section pieces having corresponding square end walls with keyhole-shaped openings for receiving and gripping shanks of the studs whose heads are guided and held between the lateral walls of the female elements. The male elements can be formed of interengaging pieces, and may possibly be articulated. The kit may include various accessories such as panels, struts, pulleys and so forth to complete the desired structure.
Patent CA-1044263-A (CA)
Inventor: CERNIA ENRICO
IPC: B61G9/12
Filed: 1976-02-11
Granted: 1978-12-12
Abstract: ABSTRACT OF THE DISCLOSURE:          The invention relates to a device for absorbing impact energy and more particularly to a device to be mounted to a con-ventional guard rail structure. The device consists of a skein of yarn of undrawn synthetic polymer and preferably nylon 6.  The yarn is passed through the holes of a plate which, in turn, is mounted in a gap of a conventional guard rail structure.  The weight of the skein is related to the amount of impact energy to be absorbed.
Patent CA-1041470-A (CA)
Inventor: WINCHURCH CHRISTOPHER J
IPC: B64D17/34
Filed: 1976-03-05
Granted: 1978-10-31
Abstract: ABSTRACT OF THE DISCLOSURE       A parachute has a zip fastener securing together normally spaced parts of the canopy to provide a canopy reduced in size by the elimination of a reefed section intermediate the parts and a release means for releasing clamping plates securing one end of the zip after initial parachute development to allow the reefed section to inflate.  The parachute may be conventional; a single skin gliding parachute having one or more wing sections wholly or in part reefed; or a multicellular double-skin ram-air inflated gliding parachute with some of the central cells reefed.
Patent CA-1042385-A (CA)
Inventor: YOSHIKAWA SHINSUKE
IPC: H01L41/45
Filed: 1976-03-12
Granted: 1978-11-14
Abstract: ABSTRACT OF THE DISCLOSURE     A method is disclosed for polarizing a thermoplastic resin film having a continuous metal electrode on one surface and a plurality of discrete electrodes on the other surface.          An additional thermoplastic resin film coated on one surface with an evaporated metal coating is placed on the high molecular film such that the evaporated metal coating comes into contact with the discrete electrodes.  A polarizing d.c. voltage is applied between the continuous metal electrode and the evaporated metal coating.
Patent CA-1067686-A (CA)
Inventor: FREE DUSTIN L
IPC: E21B43/22
Filed: 1976-03-29
Granted: 1979-12-11
Abstract: ABSTRACT           Viscous aqueous solutions are prepared which maintain a certain viscosity range over a predetermined period of time (i.e., induction period) and which there-after break, i.e., decrease in viscosity over a very short period of time.  The viscous aqueous solution comprises a polysaccharide having an ability to thicken water and dispersed or dissolved in the aqueous solution an effec-tive quantity of an organic ester which, at a temperature at which it is desired to break the viscous solution, hy-drolyzes over a delayed period of time to form an acid which degrades the polysaccharide, thus causing a split-ting of the polysaccharide chain and a decrease in the viscosity of the solution. r
Patent CA-1039119-A (CA)
Title: Twin-needle sewing machine with guide means for simultaneously stitching a pair of concealed slide fastener stringers to a fabric
Inventor: OCHIAI KOICHI
IPC: D05B29/06
Filed: 1976-04-26
Granted: 1978-09-26
Abstract: ABSTRACT OF THE DISCLOSURE      A throat plate holding the feed dog of a twin-needle sewing machine has formed therein a pair of parallel spaced guide channels for slidably accommodating respective scoop-carrying edges of a pair of concealed fastener stringer tapes as they are stitched onto a fabric.  When seen in a cross section, the guide channels diverge downwardly to prevent accidental disengagement of the scoop-carrying edges of the stringer tapes therefrom.
Patent CA-1062456-A (CA)
Inventor: MEINERS ELMO R
IPC: F26B17/14
Filed: 1976-08-24
Granted: 1979-09-18
Abstract: A B S T R A C T         An improved concurrent flow, counterflow continuous type grain dryer includes bottom cold air inlet ducts for counterflow of cold air, a first and second set of upper horizontal hot air inlet ducts connected with a common hot air manifold for concurrent flow of hot air, intermediate equal ducts transverse to the inlet ducts and connected with the hot air manifold for recycling of exhaust air through the inlet dusts, and separate upper, transverse exhaust ducts vented to the atmosphere.
Patent CA-1091345-A (CA)
Inventor: VAN ROSMALEN GERARD E
IPC: G02B26/10
Filed: 1976-10-05
Granted: 1980-12-09
Abstract: ABSTRACT:        A tracking mirror device suitable for a video disc player, in which the following of an information track on a video disc is effected by a beam of radiation with the aid of a mirror which oscillates at a high fre-quency. This causes the beam scanning the information track to oscillate transversely to the information track at a high frequency and a small amplitude, whilst the filtered out high-frequency signal, as a function of its amplitude and its phase  relationship with the high frequency voltage which is applied to the oscillating mirror, yields a control signal for following the information track. In accordance with the invention, use is made of an oscillating mirror which is driven electromagnetically and which is con-nected to oscillation compensation elements by means of springs, which elements oscillate in phase oppo-sition to the mirror. Thus, an oscillating mirror is obtained which can readily be excited to natural re-sonance and thus requires little power. On the mirror a piezo-electric miniature acceleration transducer can be mounted, which can provide a feedback signal so that the oscillating mirror can be included in a self-oscillating circuit.
Patent CA-1041759-A (CA)
Title: Interchangeable blade bit
Inventor: EFTEFIELD LARRY G
IPC: E02F9/28
Filed: 1976-10-25
Granted: 1978-11-07
Abstract: INTERCHANGEABLE BLADE BIT      Abstract of the Disclosure An interchangeable bit for selective mounting to an earth-moving blade, such as a bulldozer blade, having opposite corner portions.  The bit includes transversely extending cutting edge portions and a mounting portion adapted to be selectively mounted to opposite corners of the blade with one or the other of the cutting edge portions suitably disposed in cutting position whereby the bit provides substantially twice the normal life of the con-ventional blade bit.
Patent CA-1088090-A (CA)
Inventor: PONTICELLO IGNAZIO S
IPC: C07C69/527
Filed: 1976-10-27
Granted: 1980-10-21
Abstract: Abstract of the Disclosure An adhesive composition comprising monomeric methyl allyl methylenemalonate is useful for bonding together a wide range of materials.
Patent CA-1080972-A (CA)
Inventor: SEGLIN LEONARD
IPC: C10J3/54
Filed: 1976-11-12
Granted: 1980-07-08
Abstract: ABSTRACT:       In the process of making synthesis gas in a fluidized bed from carbon and steam, wherein a recirculating stream of carbon from the bed is heated externally of the bed with combustion gases derived by burning carbonaceous solids taken from the bed, using all the fines separated from the synthesis gas withdrawn above the fluidized bed, and such additional carbon from the bed as is necessary to make up the required heat balance, the ash content of the bed is maintained near feed levels by drawing char from the bed, fractionating it to obtain an ash-rich fraction and an ash-poor fraction, returning the ash-poor fraction to the gasifier and sending the ash-rich fraction to the combustor.
Patent CA-1082737-A (CA)
Title: Preparation de citral
Inventor: CHABARDES PIERRE
IPC: C07C45/67
Filed: 1976-12-17
Granted: 1980-07-29
Abstract: DE DIVULGATION L'invention se rapporte à la préparation de citral par isomérisation de déhydro linalol en présence de compose du vanadium et d'un catalyseur de type alcool lourd et d'éventuellement un deuxième cocatalyseur.
Patent CA-1043696-A (CA)
Inventor: CROWE TALMADGE L
IPC: E21B34/12
Filed: 1976-12-29
Granted: 1978-12-05
Abstract: WELL CONTROL VALVE APPARATUS          ABSTRACT     Well control valve to be installed in a tubing string for use in killing a well through use of fluid under pressure pumped down through the annulus surrounding the tubing string.  When the annu-lus pressure exceeds a predetermined value, the valve is opened to permit the kill fluid to flow into and through the tubing string into the producing formation.  The valve contains spaced upper and lower closure members or rupturable discs defining an atmospheric chamber therebetween.  The upstream side of the upper disc is sub-ject to the normal hydrostatic pressure of the fluid in the annulus, and also to an increase in the pressure of the annulus fluid above normal hydrostatic pressure, but its downstream side is subjected initially to the atmospheric pressure in the chamber.          Accordingly, the upper closure member or disc can be placed in its opened condition, as by rupturing it, when subjected to a prede-termined increase in annulus pressure above the normal hydrostatic pressure, allowing the annulus kill fluid to flow into the atmos-pheric chamber to open the lower closure or disc and then flow through the tubing string to the producing formation.  A check valve in the control valve permits fluid to flow from the annulus to the tubing string after the discs are ruptured, but prevents flow of fluid from the tubing string to the annulus.
Patent CA-1115500-A (CA)
Title: Method and apparatus for manufacturing articles  of hydraulic substances
Inventor: ITO YASURO
IPC: B28B1/14
Filed: 1977-02-16
Granted: 1982-01-05
Abstract: ABSTRACT OF THE DISCLOSURE         A method and apparatus are provided for manufacturing articles made of hydraulic cement.  The method includes the steps of preparing a plurality of         moulding spaces adapted to be closed in a hermetic manner and having sufficient pressure-proof against the inner pressure there-in, which pressure is raised during introduction and heat curing of hydraulic cement; introducing hydraulic cement into the mounding spaces substantially to fill the same by utilizing the pressure difference between the inner side and the outer side of the moulding space; indirectly heat curing the hydraulic cement substantially completely around the same immediately after the introduction of the cement is finished, the temperature thereof being rapidly raised up to more than 60°C, and releasing the cured articles from the moulding spaces.  The apparatus includes a vertical stack of a plurality of moulds, each including a side frame and a hollow bed overlying the side frame; sealing means interposed between the side frames and the beds for hermetically sealing the moulds; means for releasably interconnecting the stacked moulds; means for reducing the pressure in the moulds; means for pouring the hydraulic cement into the moulds; means for admitting a heating medium into said hollow beds, for indirectly heat curing said hydraulic substance poured into said moulds.  This invention thus enables the manu-facture of moulded articles of cement having high mechanical strength in a short time, and yet which can be readily removed from the moulds.
Patent CA-1092954-A (CA)
Inventor: OPPEL WERNER
IPC: G05D23/20
Filed: 1977-02-16
Granted: 1981-01-06
Abstract: ABSTRACT        High current glow discharge treatment in which workpieces are heated to a predetermined processing temperature and then maintained at this temperature by measuring the temperature of the workpieces, forming the time derivative of this temperature, comparing this derivative with a reference value, and adjusting the current of the glow discharge accordingly.      The time derivative of the temperature and the reference signal are compared in a comparator which supplies a signal to a proportional-plus-integral regulator for regulating the current of the discharge.  The reference signal is provided by a comparator having one input connected to temperature measuring points on the workpiece and the other input connected to a signal having an adjustable predetermined value.
Patent CA-1102468-A (CA)
Inventor: RAPONI DANTE A
IPC: C04B7/00
Filed: 1977-08-18
Granted: 1981-06-02
Abstract: ABSTRACT OF THE DISCLOSURE             A cementitious composition for the molding of relatively light-weight, heat-insulative, nailable, structural units such as bricks, blocks, roof decking, etc.  The composition comprises an inorganic cementitious settable admixture within which is incorporated a significant proportion of a waste polyethylene consisting substantially of polyethylene derived from the reclamation of cellulosic fiber from fiber-board to which a polyethylene coating material was previously adhered.  Additionally, the composition comprises a significant proportion of industrial waste commonly termed stack dust and/or fly ash as aggregate.
Patent CA-1108986-A (CA)
Title: Specific binding assay employing polyvinyl alcohol as separating agent
Inventor: WAGNER DANIEL
IPC: G01N23/00
Filed: 1977-11-17
Granted: 1981-09-15
Abstract: ABSTRACT OF THE DISCLOSURE      A specific binding assay method and test kit for deter-mining a ligand, particularly an antigen or hapten, in, or the ligand binding capacity of, a liquid medium, particularly a body fluid such as serum, wherein the liquid medium is combined with assay reagent means including a labeled binding component such as a radiolabeled form of the ligand, with the improvement that separation of the resulting bound species and free-species of the labeled component is accom-plished by selectively adsorbing the free-species onto a solid comprising a nonion-exchange cross-linked polyvinyl alcohol. The method is particularly suited to the radioimmunoassay detection of nonproteinaceous haptens such as thyroxine, triiodothyronine, estriol, vitamin B12 and digoxin.  The polyvinyl alcohol adsorbent provides a very effective and readily available separation means for use in specific bind-ing assays.
Patent CA-1100739-A (CA)
Inventor: RHEINS MICHEL A
IPC: E01C5/04
Filed: 1977-12-05
Granted: 1981-05-12
Abstract: ABSTRACT OF THE DISCLOSURE           The present invention relates to a method of manufac-turing terra cotta pavings which may be used for ground surfa-cing, said pavings not being frost-susceptible, being porous and water-permeable, comprising the steps of : intimately mixing 100 parts by volume of clay with 80 to 160 parts by volume of dry, non-compressed sawdust, essentially formed of particles whose average diameter is included between 0.5 mm and 4 mm ; adding water such that the total water content is between 8 and 30 % by weight with respect to the weight of the mixture ; shaping the pavings under pressure ; drying the pavings ; baking the pavings at a temperature between the temperature, above which the terra cotta is not frost-susceptible, and the melting temperature of this clay, and subjecting the faces of the pavings to pumicing,
Patent CA-1246094-A (CA)
Title: Halogenated esters
Inventor: HUFF ROGER K
IPC: C07C67/00
Filed: 1978-01-19
Granted: 1988-12-06
Abstract: TITLE: HALOGENATED ESTERS Compounds of Formula I wherein R1 and R2 are both haloalkyl groups of 1 or 2 carbon atoms or in which one of R1 and R2 is such a haloalkyl group and the other is a halogen atom or a methyl group, and in which R is a phenoxybenzyl group optionally substituted in the .alpha.-position with cyano or ethynyl - useful as insecticides. <IMG> (I)
Patent CA-1090432-A (CA)
Inventor: DAVIS JAMES A
IPC: H01L27/04
Filed: 1978-02-16
Granted: 1980-11-25
Abstract: CROSSPOINT BIAS CIRCUIT ARRANGEMENT            Abstract of the Disclosure A semiconductor transmission circuit arrangement which utilizes symmetrical transmission transistors and bias circuitry which exhibits a high output impedance and. is arranged to maintain equal d.c. bias currents in the base and the emitter/collectors of the transmission tran-sistor.  A multiple collector transistor is utilized as a primary current source and a current mirror circuit is used as a control arrangement.                             - i -
Patent CA-1086154-A (CA)
Inventor: DETZ CLIFFORD M
IPC: C23C24/00
Filed: 1978-03-08
Granted: 1980-09-23
Abstract: Abstract of the Disclosure An oriented graphite layer is formed on a metallic substrate by providing a coating of particulate carbon thereon, heating the coated sub-strate in a non-reactive atmosphere to a temperature of between 800° and 1350°C for saturational diffusion of carbon into the substrate and cooling to a temp-erature below about 200°C, thereby providing a percipitateed oriented graphite film at the surface of the substrate.
Patent CA-1113622-A (CA)
Inventor: BENTLEY JOHN
IPC: C08L67/00
Filed: 1978-04-24
Granted: 1981-12-01
Abstract: ABSTRACT OF DISCLOSURE Coating compositions are described in which the film-forming material consists of (a) 30-85% by volume of disperse particles of size 0.01 - 20 microns, of which not less than 50% by volume are non-cross-linked condensation polymer microparticles, and (b) 70 - 15% by volume of a liquid continuous phase of viscosity 0.1 -poise which is curable to a film-forming polymer by means of an autoxidative (i.e. air-drying) mechanism; the particles (a) being stable dispersed in the liquid (b) in a deflocculated state by means of an amphipathic steric stabilising agent.  Typically, the polymer microparticles may be composed of a non-cross-linked polyester and the liquid continuous phase of a drying-oil fatty acid ester of a pelyol, optionally in conjunction with a coreactive liquid such as an acrylic or methacrylic ester of a higher alcohol or a polyol.
Patent CA-1124321-A (CA)
Inventor: AKIYAMA RYO
IPC: H02P27/04
Filed: 1978-04-26
Granted: 1982-05-25
Abstract: A MOTOR SPEED ADJUSTING APPARATUS                  ABSTRACT OF THE DISCLOSURE           A motor speed adjusting apparatus comprises a motor, a motor speed setting device such as an up-down counter, a programmable divider a divisor of which is programmed by the motor speed setting device, a reference frequency signal genera-tor, a phase comparator which generates a d.c. voltage corres-ponding to a phase difference between a reference frequency signal and the output signal of the programmable divider, and a voltage controlled oscillator which oscillates at a frequency according to the output of the phase comparator.  The motor speed is adjusted according to the output frequency of the os-cillator by a step deviation from the standard motor speed, and further that deviation is displayed by a display device control-led by the motor speed setting device.
Patent CA-1114480-A (CA)
Title: Method and apparatus for automatically calibrating  a radio altimeter
Inventor: ROBERTSON ROY E
IPC: G01S13/34
Filed: 1978-05-25
Granted: 1981-12-15
Abstract: METHOD AND APPARATUS FOR AUTOMATICALLY    CALIBRATING A RADIO ALTIMETER                      Abstract of the Disclosure A method and apparatus for automatically calibrating and correcting for nonlinearities in a CWFM radio altimeter transmitter frequency sweep includes a coupling element to sample the transmitted signal.  A calibration delay line receives and delays the sampled signal, and a mixer recombines the delayed signal with the currently sampled transmitted signal to provide a calibration signal for use as a time base against which the ground reflected transmitted signal also mixed with the currently transmitted signal is compared.  The calibration signal, derived from the actual transmitted signal, varies in accordance with nonlinearities of the transmitted frequency sweep and thereby cancels the effects of such nonlinearities in the ground returned mixed signal.  A phase locked loop to which the calibration signal is applied generates pulses at a higher frequency to increase the resolution available for determining the period of the ground returned signal.  A period converter which receives the ground returned mixed signal as well as the calibration signal for compari-son therebetween provides outputs that can be accumulated and processed by a microprocessor and associated memory for output to derive appropriate altitude indicators.