baber/WOPTO huggingface dataset:
Patent CA-1267419-A (CA)
Inventor: MILLAR ROSS W
IPC: C07C201/02
Filed: 1983-06-28
Granted: 1990-04-03
Abstract: ABSTRACT      A process for the production of a high energy material involves reacting, in an inert organic solvent, a heterocyclic compound selected from oxirane, aziridine, oxetane or azetidine with a nitrogen oxide selected from dinitrogen tetroxide (N2O4) and dinitrogen pentoxide (N2O5) and, when the nitrogen oxide is N2O4, oxidising the O - or N - nitroso sub-stituent or substituents in the product obtained to O - or N -nitro substituent or substituents.  The heterocyclic compounds may be substituted or unsubstituted.  In the former case the preferred substituents groups are halogen, alkyl, alkenyl, nitro and epoxy (as is epoxidised polybutadiene).  The solvent is preferably a chlorinated alkane.    Novel nitrated derivatives of polybutadiene, in which between 1% and 25% of the carbon atoms in the polymer are sub-stituted by nitrate (ONO2), are also provided.  These novel materials are liquid rubbers when the polybutadiene starting material has a molecular wight between 2000 and 10000.
Patent CA-1236692-A (CA)
Inventor: SEELEY JAMES R
IPC: G09F15/00
Filed: 1983-08-04
Granted: 1988-05-17
Abstract: ABSTRACT            A plastic poster  frame and display holder for replaceable posters, pictures  and similar advertising or decorative material has extruded frame forming sections comprising hingedly connected front and back parts. A relatively resilient elongated plastic portion is integrally formed as part of the frame section and provides a biased clamping force for holding a poster of similar display between the hinged parts.
Patent CA-1214477-A (CA)
Inventor: WILDE BRYCE B
IPC: C04B22/06
Filed: 1983-09-02
Granted: 1986-11-25
Abstract: Abstract of the Disclosure A building material and method of manufacture thereof wherein the building material comprises a concrete-type mixture containing fibers or other waste products as a component  of the mixture, and the method of manufacture includes adding lime in preselected quantities or ratios  by volume to the organic waste produce, permitting the limed mixture to season and cure to produce an aggregate material for use in substantially any standard concrete recipe for creating a building material of great strength, which is lightweight and substantially fireproof.
Patent CA-1208879-A (CA)
Inventor: AUSTIN DEREK T
IPC: B23K20/04
Filed: 1983-09-09
Granted: 1986-08-05
Abstract: A B S T R A C T          Method of cladding one or both faces of a relatively hot cast aluminium core strip with a relatively cool Al cladding strip, drawn from a coil of such strip, in which the hot core strip and cool cladding strip are bonded together in the nip of a rolling mill.  During its passage to the mill the hot core strip is bent over a first single roll, while the cool cladding strip is bent around a second single roll in advance of the first single roll and is reversely bent and brought into contact with the core strip at the first single roll, the cladding strip being adjusted to travel at a different speed to the core strip whereby the surface of the core strip and cladding strip exercise abrading action on each other.  The differential speeds of the core strip and cladding strip are preferably achieved by adjustment of the braking torque applied to the cladding strip coil, as it is unwound.
Patent CA-1209707-A (CA)
Inventor: BROWN NEIL L
IPC: H03M1/00
Filed: 1983-09-23
Granted: 1986-08-12
Abstract: SYSTEMS FOR PROVIDING DIGITAL REPRESENTATIONS                OF ANALOG VALUES     Abstract of the Disclosure A system using digital-to-analog (D/A) conversion techniques wherein the AC voltage output, as from a sensor, for example, is supplied to an AC comparator circuit for comparing its value with the analog output of a D/A transformer circuit, the difference signal being used to provide an error signal for use by control logic to control the digital setting of the D/A transformer so that its AC analog output is equal to the sensor AC voltage output.  The digital setting represents the sensor output in digital form, the most significant bits thereof being determined by a successive approximation technique using finite time integration and the least significant bits thereof being determined using dual slope integration. During the dual slope integration process, the comparator circuit uses a specially designed A-C feedback amplifier-filter circuit which reduces the harmonics of the AC operating signal and a specially designed phase sensitive detector which significantly further reduces undesirable third harmonics in particular, as well as higher odd harmonics.
Patent CA-1208273-A (CA)
Inventor: ROHDIN FREDDIE L
IPC: H02K37/04
Filed: 1983-09-28
Granted: 1986-07-22
Abstract: ABSTRACT         A reluctance motor comprises a stator having two salient poles, and a rotor also having two poles and being of soft magnetic material.  The stator poles support windings which when current is being supplied generate a magnetic field which tends to set the rotor in a stable position of equili-brium in which the rotor pole and the stator pole coincide.          Either or both of the rotor poles and/or either or both of the stator poles are designed so as at high flux density to cause a constriction of the flux in a part of the cross section of the flux path to displace the position of equili-brium and when the flux density is moderate to distribute the flux generally uniformly over the said cross section.
Patent CA-1209242-A (CA)
Inventor: BLACKBURN PHILIP R
IPC: G01N29/22
Filed: 1983-10-06
Granted: 1986-08-05
Abstract: TEST METHOD FOR ACETYLENE CYLINDERS                   Abstract Integrity of acetylene cylinder filler material is accurately and easily determined by monitoring acoustic emission counts as a function of load and estabilishing the distinctive signature of faulty filler material.
Patent CA-1234786-A (CA)
Inventor: MAIONE CLAUDIO
IPC: B65D81/34
Filed: 1983-12-02
Granted: 1988-04-05
Abstract: ABSTRACT OF THE DISCLOSURE           A disposable device for utilizing an exothermic or endothermic reaction for heating or cooling drinks and food-stuffs, substantially comprising a single piece metal container, having two chambers and being enveloped within a protective insu-lating plastic covering, the reactants being contained in sepa-rated sectors and closed by diaphragms, which are heat-sealed and impermeable to external agents, the covering being provided with a locking system for locking therein the metal container and with a device, so-called outer breaker, which is manually controlled for starting the exothermic or endothermic reaction by mixing a solid reactant with a liquid one.
Patent CA-1227758-A (CA)
Inventor: MORGAN HOWARD W JR
IPC: B01D29/23
Filed: 1983-12-08
Granted: 1987-10-06
Abstract: LIQUID FILTER WITH COMBINED FILTRATION BAG         AND LID SEALING GASKET   A liquid filter with a unitary led to housing seal and filtration bag.   The seal is used as a gasket between the filter housing and the lid and is attached about the open upper end of the bag.
Patent CA-1205018-A (CA)
Inventor: STIKVOORT EDUARD F
IPC: H03G7/00
Filed: 1984-02-02
Granted: 1986-05-27
Abstract: ABSTRACT: "Digital dynamic range converter".           A digital dynamic range converter of the forward control type for varying the dynamic range of an audio signal which is available in digital form and is constituted by a sequence of audio signal samples. In the multiplier device 5, each audio signal sample x(n) is multiplied by a control signal sample s(n) which is delivered by a digital control signal generator 7. This control signal generator 7 has applied to it unipolar signal samples ?(n) which are derived by means of a transmission channel 9 from the audio signal samples x(n).         In order to cause this dynamic range converter to respond rapidly to abrupt variations in the audio signal and to render it moreover universally usable, the control signal generator is provided with a digital peak-value detector 11 which converts the sequence of unipolar signal samples ?(n) into a sequence of peak-value samples x(n). The latter are applied to an adjustable digital non-linear amplitude transformation circuit 12 which has an adjustable amplitude transmission charac-teristic curve determined by adjustment quantities R and a. It delivers the transformation samples ?(n) which are preferably converted in a digital low-pass filter into the control signal samples s(n) which are applied to the multiplier device.
Patent CA-1195370-A (CA)
Inventor: FRANTZ JAMES S
IPC: E05B63/00
Filed: 1984-02-06
Granted: 1985-10-15
Abstract: SECURITY CABINET FOR STORAGE OF VALUABLES        Abstract of the Disclosure A security cabinet for protecting one's valuables having a key actuatable locking means provided with an elongate locking bar for lockingly engaging with a door flange provided on the inner side of the door.  Additional locking means are provided along the hinge side of the door in the form of an additional key actuatable locking bar or a series of internal locking pins carried by the door and cooperating with cutouts provided in the surrounding door-jamb or frame.
Patent CA-1203327-A (CA)
Inventor: O'HANLAN J TREACY
IPC: A47C27/08
Filed: 1984-02-21
Granted: 1986-04-15
Abstract: PRESSURE RELIEF DEVICE                      ABSTRACT   A pressure relief device for bed-ridden patients is comprised of a hollow annular cushion having a valve to permit filling of the cushion with water, laterally extending tabs to facilitate positioning of the device, and an anti-bacterial agent and a dye agent located within the hollow cushion.
Patent CA-1216621-A (CA)
Inventor: TRINH LANH T
IPC: F02P15/00
Filed: 1984-03-14
Granted: 1987-01-13
Abstract: ABSTRACT OF THE DISCLOSURE        A breakerless ignition system in which an elec-tronic advance circuit (30) generates an electrical trigger signal (SPKE) and a mechanical advance circuit generates a mechanical trigger signal (PCP).  The mechanical trigger signal (PCP) and electrical trigger signal (SPKE) are com-bined in a trigger circuit (28) to generate an activation signal to a power switching device (40) which causes an ignition circuit (32) to fire a spark plug (54).  In opera-tion the electrical trigger signal (SPKE) normally provides an accurate timing signal to ignite the plug (54) and the trigger circuit (28) masks the mechanical trigger signal (PCP) to prevent double firing.  Upon failures or special conditions when the (SPKE) signal is absent the (PCP) signal will provide operation in a back-up mode to ignite plug (54).     (Figure 1)
Patent CA-1209714-A (CA)
Inventor: SALAS EDWARD R
IPC: G06F12/06
Filed: 1984-03-21
Granted: 1986-08-12
Abstract: ABSTRACT OF THE DISCLOSURE      A memory system includes at  least one or more memory module  boards  identical  in  construction  and  a single computer  board   containing  the  control   circuits  for controlling memory operations.  Each  board plugs into the main board  and includes a memory  section having a number of  rows  of memory  chips  and an  identification section containing circuits for  generating signals indicating the board  density  and  the  type  of  memory  parts  used in constructing the  board's memory section.   The main board control  circuits  include  a number  of  decoder circuits which  couple  to  the  identification and  to  the memory section of each memory module board.  The decoder circuits receive   different   address   bit   combinations   of  a predetermined  multibit  address  portion  of  each memory request address.  In response  to signals generated by the identification  sections of  the installed  memory boards, the  decoder  circuits are  selectively enabled  to decode those bit combinations of the address portion specified by the sections for enabling  successive addressing of all of the blocks of location within the system.
Patent CA-1272143-A (CA)
Inventor: YARRANTON GEOFFREY T
IPC: C12N15/00
Filed: 1984-03-28
Granted: 1990-07-31
Abstract: ABSTRACT DNA VECTORS AND THEIR USE IN RECOMBINANT DNA TECHNOLOGY.       The invention provides a new class of DNA vectors, each comprising two replication systems; a first origin of replication resulting in a low copy number and stable inheritance of the plasmid, and a second, high copy number, origin of replication at which replication is directly controllable such that, when host cells carrying the vector are propagated under a first set of conditions, replication takes place mainly from the low copy number origin, and that when said cells are propa-gated under a second set of conditions, replication takes place also from the high copy number origin to produce a high yield of gene product.   The controllable origin of replication may be under the control of a natural promoter of RNA transcription or a substitute promoter such as the PL  promoter or lac promoter.
Patent CA-1203603-A (CA)
Inventor: VOGEL RICHARD E
IPC: F04B39/02
Filed: 1984-04-17
Granted: 1986-04-22
Abstract: DEGRADATION SENSING AND SHUT-DOWN MEANS FOR              REFRIGERATION MOTOR-COMPRESSOR UNITS    Abstract of the Disclosure.         Means for shutting down operation of an enclosed motor compressor unit for air conditioning and heat pump service consists in immersing a pair of spaced electrodes having a potential gradient thereacross in the refrigerant-oil mixture in the unit enclosure and in employing the ion and electron flow across the electrodes resulting from contaminants in the mixture to break the motor energizing circuit through relay means, and in the provision of a normally open fusible switch responsive to close in response to a predetermined high motor temperature and through relay means break the motor energizing circuit.  In a simplified modification, the immersed electrodes are directly connected across the power supply leads and cause a fusible link connected in the power supply leads to open and break the motor energizing circuit when sufficient con-duction across the electrodes occurs.
Patent CA-1235836-A (CA)
Inventor: WHITTEMORE DWIGHT S
IPC: C04B35/101
Filed: 1984-06-04
Granted: 1988-04-26
Abstract: SLIDE GATES          Abstract of the Disclosure High alumina slide gate compositions comprising aluminous grain, carbonaceous material, high purity alumina, silicon      and resin.
Patent CA-1251560-A (CA)
Inventor: IDA MITSURU
IPC: G11B15/10
Filed: 1984-07-27
Granted: 1989-03-21
Abstract: MODE CHANGING MECHANISM FOR CASSETTE TAPE RECORDING AND/OR REPRODUCING APPARATUS          ABSTRACT OF THE DISCLOSURE         In a cassette tape recording and/or reproducing apparatus having a tape drive with a rotatable idler which is bodily shiftable for changing the operating mode, a mode changing mechanism has first and second mode selecting slide members mounted on a chassis for independent movements along parallel paths between operative and inoperative positions, a pivot arm carrying the idler and being swingable in opposite directions, for example, for establishing fast-forward and rewind modes, respectively, a coupling member straddling the slide members and being engageable with the pivot arm and with actuating members which are provided on the slide members, respectively, and which engage the coupling member at respective locations thereon spaced apart in a direction transverse to the paths of movement of the slide members, and a spring acting on the coupling member along a line of force which is intermediate the locations where the actuating members engage the coupling member and in a direction for causing the coupling member to simultan-eously move the slide members to their inoperative positions. The movement of a selected one of the slide members to its operative position turns the coupling member about the actuating member on the other slide member and thereby effects swinging of the pivot arm in one direction or the other for establishing a corresponding mode.
Patent CA-1253125-A (CA)
Inventor: CARSON OLIVER S
IPC: B64D15/16
Filed: 1984-08-23
Granted: 1989-04-25
Abstract: ABSTRACT OF THE DISCLOSURE       A METHOD OF AND APPARATUS FOR DE-ICING AN        ELASTICALLY DEFORMABLE SHEET MEMBER            An economical method of, and apparatus for, de-icing the skin panels (25) of aircraft employs electromagnetic solenoid actuators (1) which use normal supply voltages (43) available on aircraft to flex the skin panels slowly and rely upon abrupt termination (S) of the flexing pressure and the consequent fast natural elastic relaxation of the panels to break the bond between the panels and the ice accreted thereon, to shrug off the ice from the panels.
Patent CA-1219208-A (CA)
Inventor: MOORE PHILIP W
IPC: C01G99/00
Filed: 1984-08-28
Granted: 1987-03-17
Abstract: CANADIAN PATENT APPLICATION     TITLE:  "TREATMENT OF TECHNETIUM CONTAINING SOLUTIONS"     INVENTORS:    PHILIP WILLIAM MOORE               JOHN MARTIN SODEAU MICHAEL SHYING JOHN VINCENT EVANS     ABSTRACT            An inital aqueous pertechnetate solution which has a low electrolyte concentration compared with physiological saline is treated by passage through a bed of insoluble ion exchange material for adsorbing the pertechnetate.  In a second step an ionic eluant having a smaller volume than the pertechnetate solution is passed through the bed to remove the pertechnetate to provide a relatively concentrated and pure eluate solution, the ion exchange material in the bed and the ionic eluant having respective properties for providing the eluate with a pH suitable for radiopharmaceutical purposes.  The bed retains thereon radionuclidic impurities which may have been in the initial solution.  The method can be valuable for treating the eluate from a portable technetium generator which is eluted with water and advantageously the insoluble material in the bed is zirconium oxide.
Patent CA-1238180-A (CA)
Inventor: ACKLAM DONALD J
IPC: G09B9/28
Filed: 1984-10-02
Granted: 1988-06-21
Abstract: ABSTRACT     Flight  Simulator feel  apparatus  suitable  for use with an elevator control column and a rudder bar is provided by a variably tensioned cable subjected to transverse deflection by movement of the control column or rudder bar as the case may be, whereby a variable control stiffness (feel) is achieved in a simple and effective manner.
Patent CA-1262392-A (CA)
Inventor: LUNK HANS E
IPC: H01B3/44
Filed: 1984-10-05
Granted: 1989-10-17
Abstract: ABSTRACT              Melt-Shapeable Fluoropolymer Compositions Melt-shapeable polymeric compositions comprising a first fluoropolymer of relatively low crystallinity and a second fluoropolymer of relatively high crystallinity, especially a fluoropolymer obtained by irradiating a fluoropolymer which cannot be melt-shaped in the absence of other polymers.  The first fluoropolymer is preferably a copolymer of tetrafluoroethylene and a perfluorinated comonomer, eg. hexafluoropropylene or a perfluorinated vinyl ether.  The second fluoropolymer is preferably tetrafluoroethylene which has been irradiated to a dosage of 2.5 to 40 Mrad.  The weight ratio of the first to the second polymer is preferably 0.3:1 to 2.5:1.  The compositions are melt-shapeable, and the resulting shaped products have a valuable combination of properties derived from both fluoropolymers.  For example, the compositions are particularly useful for electrical insulation, especially as low loss foamed insulation in coaxial cables.
Patent CA-1206220-A (CA)
Inventor: KENT HAROLD B
IPC: H01R4/18
Filed: 1984-10-05
Granted: 1986-06-17
Abstract: ABSTRACT                CONNECTING DEVICE            A reusable connecting device is disclosed which uses a heat-recoverable metallic driver connected to a socket having a biasing portion and a sequentially-operating overload portion.  When it is desired to make a connection between this device and other objects, the object is placed within the socket and the driver is caused to shrink, thereby overcoming the biasing portion of the socket and causing the socket to contact and hold the object, the overload portion then acting as an overload mechanism for the heat-recoverable metallic driver.      (Figure 2)
Patent CA-1225390-A (CA)
Inventor: KATNER ALLEN S
IPC: C07D471/04
Filed: 1984-10-11
Granted: 1987-08-11
Abstract: ABSTRACT           Cephalosporin compounds substituted in the 7-position by a 2-(5- or 6-membered heterocyclic)-2-oximinoacetylamino group and in the 3-position with a bicyclicpyridinium methyl group are broad spectrum antibiotics highly effective against bacterial infections caused by gram-negative and gram-positive microorganisms.
Patent CA-1217814-A (CA)
Inventor: VAIL WILLIAM B III
IPC: G01V3/32
Filed: 1985-02-11
Granted: 1987-02-10
Abstract: ABSTRACT            The nucleons chemically bound in water and oil present in formation are preferentially aligned in the earth's magnetic field causing natural nuclear paramagnetism within the formation.  This paramagnetism causes a slight alteration in the strength of the earth's magnetic field in the vicinity of a borehole adjacent to the formation.  Repeated application of an A.C. magnetic field at the Larmor frequency of the nucleons present yields an amplitude modulation of the earth's magnetic field.  The magnitude of such modulation yields the total number of nucleons present and the phase contains information used to provide information regardless of oil and water present in the formation.
Patent CA-1224390-A (CA)
Inventor: KOJIMA RYUJI
IPC: C23C22/77
Filed: 1985-02-28
Granted: 1987-07-21
Abstract: ABSTRACT OF THE DISCLOSURE      A process for controlling the zinc or zinc and nickel content of a zinc phosphate conversion coating solution employs the addition of EDTA and titration with calcium ion using a calcium ion electrode.  Pref-erably to a second sample is added EDTA and a thioglyco-late and the same titration conducted to obtain the concentration of nickel ion for direct control purposes.
Patent CA-1246109-A (CA)
Title: Artificial grass
Inventor: FRIEDRICH HANS-JOACHIM
IPC: E01C13/08
Filed: 1985-03-13
Granted: 1988-12-06
Abstract: A B S T R A C T     Artificial Grass The invention relates to an artificial grass, in particular for sports and playing areas, having a filling of free-flowing bulk material, in particular sand, provided between its pile threads such that the free ends of the pile threads project above the filling.  According to the invention, the filling is fixed in relation to the pile threads by a bonding agent.
Patent CA-1259646-A (CA)
Inventor: HAERDMARK RAGNAR
IPC: B60B39/00
Filed: 1985-03-14
Granted: 1989-09-19
Abstract: ABSTRACT        Anti-skid device especially for motor vehicle comprising elastic arms (2) assembled to a disc unit.          In use the disc unit is brought close to the vehicle wheel, the friction of which is to be increased, and the outer ends (3) of the arms are successively drawn in between wheel and ground to increase the friction.          Apart from their friction increasing portion (3) the arms (2) are extremely elastic and extend practically to the centre of rotation and bearing of the disc.          Above the arms there is arranged a disc (5) extending out to the vicinity of the transition of the arms (2) into the friction increasing members (3). Moreover, beneath the arms a ring (6) is arranged which is attached between the arms (2) to the points (7) of attachment of the disc. In this way the disc is given a plane appearance ensuring that the friction in-creasing members (3) of the arms can obtain defined feed-in positions relative to the vehicle wheel.
Patent CA-1239922-A (CA)
Inventor: HARTWIG MICHAEL M
IPC: F02B3/06
Filed: 1985-05-03
Granted: 1988-08-02
Abstract: ABSTRACT           A  self-cleaning  diesel  exhaust  particulate filter  is  disclosed  wherein  burn-off  of  collected particulate matter is accomplished at normal exhaust gas  temperatures,  the  filter  being  provided with  a catalyst mixture of a platinum group metal and silver vanadate, the presence of which lowers the temperature at which ignition of the particulate is initiated.