baber/WOPTO huggingface dataset:
Patent CA-1098813-A (CA)
Inventor: CORDIA JOHANNES M
IPC: B29C61/04
Filed: 1977-11-04
Granted: 1981-04-07
Abstract: ABSTRACT         A heat-recoverable article for sealing or insulating the surface of a substrate comprises a dimensionally heat-recoverable member and heat expansible material positioned in the direction  of recovery thereof so that when heat is applied the material expands and is urged towards the surface by the recoverable member.  The recoverable member may be made from a plastics material or  a metal alloy possessing memory pro-perties but is preferably made from a resiliently recoverable member held in a deformed state by fusible retaining means, which in some cases may be made from the heat expansible material itself.  Especially preferred are longitudinally split tubular heat-recoverable members in  which the fusible retaining means comprises a hot melt adhesive positioned between the overlapping edges.  The heat expansible material is typically employed as a layer of polymeric material containing a dissolved or dispersed foaming agent but, in other cases, may comprise a laminate of a layer of foamable material sandwiched between two layers of a  mastic or hot melt adhesive.
Patent CA-1092755-A (CA)
Inventor: MURPHY KEVIN P
IPC: C09K5/04
Filed: 1977-12-14
Granted: 1981-01-06
Abstract: INVENTION:  CONSTANT BOILING MIXTURES OF 1-CHLORO-2,2,2-TRIFLUOROETHANE AND HYDROCARBONS          INVENTORS:  KEVIN P. MURPHY, RICHARD F. STAHL and SABATINO R. ORPEO                  ABSTRACT OF THE DISCLOSURE           Constant boiling mixtures of 1-chloro-2,2,2-trifluoro-ethane and certain hydrocarbons are useful as refrigerants, heat transfer media, gaseous dielectrics, expansion agents, aerosol propellants, working fluids in a power cycle and solvents.
Patent CA-1116424-A (CA)
Inventor: EDWARDS THOMAS C
IPC: B60H1/00
Filed: 1977-12-23
Granted: 1982-01-19
Abstract: ABSTRACT OF THE DISCLOSURE          An air conditioning system for an enclosed space which includes a compressor and expander having inlet and outlet ports with a primary heat exchanger connected between the compressor outlet port and the expander inlet port and a secondary heat exchanger connected between the expander outlet port and the compressor inlet port to complete a closed loop having a charge of air, one of the heat exchangers being thermally coupled to the enclosed space.          A pump is provided for injecting air into the loop to increase the pressure therein thereby to increase the heat rate of the system.  Preferably the pump is used for both injecting air into the loop and bleeding air from the loop under the control of a thermostat for maintenance of a set temperature; however, a simplified form of the invention employs constant bleed.          In a more elaborate form of the invention pressure follow-up is incorporated in the control to avoid any tendency toward overshoot.
Patent CA-1124952-A (CA)
Title: Method and apparatus for continuous, ambulatory  peritoneal dialysis
Inventor: POPOVICH ROBERT P
IPC: A61M1/16
Filed: 1978-02-20
Granted: 1982-06-08
Abstract: METHOD AND APPARATUS FOR CONTINUOUS, AMBULATORY PERITONEAL DIALYSIS     ABSTRACT     A process for the removal of toxins from the body in a continuous manner while the patient is totally ambulatory.          The process involves the infusion of a dialysate fluid under prescribed conditions into the peritoneal cavity.  The toxic solutes are transported across the peritoneum membrane into the dialysate fluid by the natural processes of diffusion and convection.  The dialysate fluid and the toxins are then removed after a prescribed residence phase.  Apparatus includes an in-dwelling balloon catheter surgically implanted within the peritoneal cavity of a patient, a Dacron TM cuff surgically attached to the abdominal wall, and an external quick connect coupling attached to the catheter.  Apparatus may also include a wearable microbiological filter unit for reducing the risk of peritonitis during infusion of dialysate fluid.
Patent CA-1092353-A (CA)
Inventor: STUEVECKE CLAUS-PETER
IPC: B44D3/18
Filed: 1978-03-14
Granted: 1980-12-30
Abstract: ABSTRACT           A stretcher frame for decorative materials used as wall hangings, for artists' canvasses and the like comprises four limbs defining a rectangle, two of which can be folded inwardly at their centres so that the frame can be folded up concertina-fashion.  Hinge connections are provided at each corner of the frame and at the mid-points of the folding limbs.   The four limbs remain permanently connected by the hinge connections and the folded frame can be easily transported and stored.   If the covering material can be folded it can remain in place on the frame when the frame is folded.   The hinge connections comprise flat link members which are normally concealed within slots in the limbs.
Patent CA-1167387-A (CA)
Inventor: LAVENDER ARDIS R
IPC: A61M1/38
Filed: 1978-05-10
Granted: 1984-05-15
Abstract: ABSTRACT OF THE DISCLOSURE  .              An apparatus, system and process for continuously frac-tionating blood in which blood from a donor is passed along a semi-permeable membrane through which passes a fraction to be collected.          Turbulent blood flow is maintained to prevent a filter cake from build-ing up on the membrane surface and thereby prevent the blood fraction from passing therethrough. The system includes the blood fractiona-tor, a collection apparatus, a blood pump and appropriate blood clot filters. The rapid blood fraction production rate and the small size of the device facilitates in situ collection of the blood fraction. Frac-tionation rates upwards of 30 volume percent of blood flow are possible.
Patent CA-1067444-A (CA)
Inventor: LAPEYRE JAMES M
IPC: B65G17/08
Filed: 1978-05-25
Granted: 1979-12-04
Abstract: A B S T R A C T     A multiple link conveyor having identical flat links each composed of interleaved identical sheet members, each link being interleaved with adjacent links for pivotal movement of adjacent links in the plane thereof.
Patent CA-1112668-A (CA)
Inventor: WILLIAMS JAMES C
IPC: A01N33/24
Filed: 1978-06-22
Granted: 1981-11-17
Abstract: Abstract This invention relates to the processes for preparing N-alkoxy-2,6-dinitro-N-substituted-4-substituted anilines of the formula          Formula I wherein R1 is methyl or ethyl;        R2 is hydrogen, C1-C3 alkyl or C3-C4 alkenyl; and R3 is methyl, ethyl, isopropyl or trifluoromethyl.          A 2,6-dinitro-1-halo-4-substituted- benzene is reacted with an alkoxyamine halohalide to prepare a N-alkoxy-2,6-dinitro-4-substituted aniline which in turn may be reacted with an alkylating agent in the presence of a strong base to pre-pare a N-alkoxy-2,6-dinitro-4-substituted-N-substituted aniline.  The compounds are herbicides.
Patent CA-1113648-A (CA)
Title: Recovery of lithium from brines
Inventor: LEE JOHN M
IPC: C08K3/18
Filed: 1978-07-04
Granted: 1981-12-01
Abstract: ABSTRACT OF THE DISCLOSURE Lithium is preferentially extracted from brine containing Li salts along with salts of other metals, e.g. Na, Ca, Mg, K, and/or B, by contacting the brine with a particulate anion exchange resin having suspended therein a halolithium/lithium aluminate complex.
Patent CA-1102927-A (CA)
Inventor: RAGARD PHILLIP A
IPC: H05K13/04
Filed: 1978-07-19
Granted: 1981-06-09
Abstract: TITLE:        AUTOMATED HYBRID CIRCUIT BOARD ASSEMBLY       APPARATUS                    ABSTRACT OF THE DISCLOSURE           An apparatus for placement of electronic components on a fluxed hybrid circuit substrate.  In accordance with an automated program, the apparatus at a single work station places with high precision a plurality of chips of various types and physical and electrical sizes on a single substrate.  Components are successively placed by a pair of hollow pick and placement spindles operating alternately and having motion in the X-Y planes.  Precise location of stored chips is not required; the apparatus orients and centers each chip after selection and prior to placement.
Patent CA-1094444-A (CA)
Inventor: GRAY MICHAEL L
IPC: F25J3/02
Filed: 1978-10-03
Granted: 1981-01-27
Abstract: LIQUID FLASH BETWEEN EXPANDERS IN GAS SEPARATION Abstract of the Disclosure In the separation of low boiling gases such as ethane and heavier from natural gas utilizing two expanders in series, liquid condensed before expansion is not passed to the fractionator but is flashed and the resulting vapor combined with the expanded vapor from the first expander. This results in both increased work output from the second expander and simplified design of the downstream fractionator column since it reduces the amount of lighter materials introduced into the lower section thereof.
Patent CA-1097763-A (CA)
Inventor: BLUMKE EUGENE G
IPC: G06F13/372
Filed: 1978-11-30
Granted: 1981-03-17
Abstract: ABSTRACT OF THE DISCLOSURE         Disclosed are a method and apparatus for eliminating conflicts on a communication channel, and particularly on a shared communication channel where a plurality of active stations are provided, each capable of seizing use of the channel.  Counter means at each station contains an indication representative of the station having the opportunity to seize use of the channel.  The indication is sequentially altered to provide the opportunity to each station to seize use of the channel, and each station not having such opportunity is inhibited from seizing the channel.  The indications in the counter means are synchronized each time a station seizes use of the channel, and may also be synchronized periodically if no station seizes use of the channel.
Patent CA-1115091-A (CA)
Title: Mechanical power transmission system
Inventor: BRUNS JAMES A
IPC: F16G1/28
Filed: 1978-12-13
Granted: 1981-12-29
Abstract: ABSTRACT         A pulley configuration which increases the contact area between the pulley tooth tips and the land area of the belt teeth.  The increased contact area reduces land area wear between belt teeth.  The pulley tooth tip has a longitudinal cross-sectional contour partially composed of two substantially circular arcs connected by a line segment which is substantially straight or slightly curved.  The length of the line segment is from 2 percent to 100 percent of the width of the belt tooth on which the pulley is used, and preferably less than about 7 percent of the width of the belt tooth.  me pulley groove depth may be less than the height of the belt tooth and the groove has a longitudinal cross-sectional contour partially composed of two substantially circular arcs connected by a line segment which is substantially straight or slightly curved.  The pulley in combination with a toothed belt forms a positive power transmission system.
Patent CA-1124088-A (CA)
Inventor: LEWIS GEORGE D
IPC: F23R3/32
Filed: 1979-01-15
Granted: 1982-05-25
Abstract: ABSTRACT OF THE DISCLOSURE      An improved combustor for a gas turbine engine is disclosed.  Techniques for reducing the level of noxious pollutants emitted by the combustor are developed.  In one embodiment, a combination of serpentine geometried, fuel-mixing tubes discharging to the radially outward area of the combustor and an axially oriented, fuel-mixing tube near the center of the combustor are adapted to gener-ate a strong centrifugal force field within the combustor.           The tube near the center of the combustor has a convergent section at the upstream end thereof and a divergent section at the downstream end thereof.  Fuel supply means is adapted to discharge fuel into the convergent section of the tube.           The force field promotes rapid mixing and combustion within the chamber to reduce both the magnitude of the combustor temperature and the period of exposure of the medium gases to the temperature.  In accordance with a method taught, the fuel/air ratio in the serpentine mixing tubes is maintained within the range of fifty to seventy-five percent (50 to 75%) of the stoichiometric fuel/air ratio for the fuel employed and the fuel/air ratio in the axial mixing tube is maintained at a value less than seventy-five percent (75%) of the stoichiometric fuel/air ratio for the fuel employed.
Patent CA-1119105-A (CA)
Inventor: HOU KENNETH C
IPC: B01D39/18
Filed: 1979-02-26
Granted: 1982-03-02
Abstract: ABSTRACT          A filter media sheet comprising fine particulate and a self-bonding matrix of cellulose fiber, the surfaces of at least one of which are modified with a polyamido-polyamine epichlorhydrin cationic resin, the matrix incorporating beaten cellulose fiber to provide a Canadian Standard Freeness of less than 600 ml.
Patent CA-1097602-A (CA)
Title: Means and method for in-line removal of seat rings in  ball valves
Inventor: KACAL GARY W
IPC: F16K27/06
Filed: 1979-04-04
Granted: 1981-03-17
Abstract: MEANS AND METHOD FOR IN-LINE REMOVAL      OF SEAT RINGS IN BALL VALVES            Abstract of the Disclosure A ball valve structure has a removable upper cover plate (16) to permit the ball (34) to be removed from the valve body. A separate cam tool (90, Figs. 8-10) after removal of the cover plate is positioned within the bore of the ball which has been partially rotated From the full open position, and upon a return rotation of the ball with the cam tool therein to a full open position an adjacent spring urged seat ring (58) is cammed away from the ball to a retracted position. A seat ring retainer (82) is then actuated to hold the seat ring in the retracted position. The cam tool is then utilized in a similar manner to cam the other opposite seat ring in retracted position. The ball may then be removed with the seat rings for replacement or repair as desired. The seat rings and seals (70) thereon may be removed and replaced in such manner without removal of the valve from the flowline in which the valve is positioned.
Patent CA-1116530-A (CA)
Inventor: ECKEL OLIVER C
IPC: F03D1/06
Filed: 1979-05-30
Granted: 1982-01-19
Abstract: ABSTRACT OF THE DISCLOSURE          A new and improved type of rotor blade assembly is disclosed for use in a power-generating, wind-driven turbine.          The present invention comprises a plurality of support blocks each mounting a rotor blade and captivated between two rings so as to form a cylindrical rotor array with radially-extending blades.   The present invention  offers the dual advantages of reduced fabrication costs and increased ease of manufacture.
Patent CA-1116476-A (CA)
Inventor: LORD STEVEN M
IPC: B63B1/02
Filed: 1979-05-31
Granted: 1982-01-19
Abstract: ABSTRACT     A turn-assisting method and apparatus for use with the hull of a vessel adapted for navigation in waters having an ice-covering.  The hull includes port and starboard portions having a sloped configuration for applying a generally symmetrically distributed bending force to the ice-cover on either side of the vessel during straight-forward travel.   The turn assisting apparatus located on each of the port and starboard portions is positioned so as to remain out of contact with the ice covering during straight-forward travel.  The turn-assisting apparatus includes a generally vertically oriented ice-crushing wall portion.  A positioning mechanism is provided which is adapted for selectively positioning one of the turn-assisting apparatuses in contact with the ice-covering while maintaining the other of the turn-assisting apparatuses out of contact with the ice-covering.  When the vessel is turned, the positioning mechanism is actuated to bring the generally vertically oriented ice-crushing wall portion of one of the turn-assisting apparatuses into contact with the ice-covering.          A crushing force is applied to the ice by the generally vertically oriented ice-crushing wall surface in contact with the ice-covering, while the other side of the hull continues to apply a bending force on the ice-covering, the imbalance of the horizontal components of the crushing and bending forces assisting in the turning of the vessel.
Patent CA-1108628-A (CA)
Inventor: HOFER PETER
IPC: C07D207/38
Filed: 1979-06-08
Granted: 1981-09-08
Abstract: ABSTRACT OF THE DISCLOSURE      Pyrrolidin-2-ones are produced by hydrogenation of 3-pyrrolin-2-ones, which latter compounds could not prior to this invention be easily obtained.  These 3-pyrrolin-2-ones with various substituents are produced by ring closure of N-aroylmethyl-acetamides.  The ring closure is effected in basic media under nitrogen.
Patent CA-1133328-A (CA)
Inventor: VASUDEVAN GANAPATHY
IPC: C08J7/04
Filed: 1979-06-08
Granted: 1982-10-12
Abstract: 12,087 METHOD FOR COATING A TUBULAR CASING The method comprises supporting an inflated casing between secured ends so as to establish a state of tension while exposing the inflated casing to a cloud of electrostatically charged particles of a predetermined resinous powder material of predetermined size, subjecting the coated casing to a temperature sufficient to sinter the coating in less than 5 minutes and cooling the sintered coating.
Patent CA-1147080-A (CA)
Inventor: DICKIE RAY A
IPC: C09D5/12
Filed: 1979-07-05
Granted: 1983-05-24
Abstract: ABSTRACT OF THE DISCLOSURE       Crosslinking compositions comprising (a) option-ally at least partially neutralized reaction product of di- or poly epoxy compound and hydroxy amine and (b) amino resin crosslinker that are formulated into primers pro-viding alkaline resistant coatings even in absence of chromate inhibiting pigments are improved by incorporation of reactive hydroxy phosphate catalyst that lowers cure temperature without increase in moisture sensitivity of cured coating.  One reactive catalyst is a reaction product of di- or triol and P2O5.
Patent CA-1120418-A (CA)
Title: Process and apparatus for thermally processing heavy hydrocarbon-containing liquids
Inventor: TACIUK WILLIAM
IPC: C10G9/28
Filed: 1979-10-11
Granted: 1982-03-23
Abstract: "PROCESS AND APPARATUS FOR THERMALLY PROCESSING   HEAVY HYDROCARBON-CONTAINING LIQUIDS"     ABSTRACT OF THE DISCLOSURE           There is provided an apparatus comprising rotating inner and outer concentric tubes.  The inner tube provides a vapor zone and the annular space between the tubes provides a combustion zone.  Hot particulate solids, such as sand, are advanced along an endless path through the vapor zone, back through the combustion zone and back into the vapor zone IN the vapor zone, oil is sprayed on the hot solids.  The mixture is mixed and cascaded to obtain heat transfer from the solids to the oil thereby generating hydrocarbon vapors and coke deposit on on the solids.  The vapors are removed by suction from the vapor zone. 'The coked solids are trans-ferred into the combustion zone and cascaded and lifted and dropped therein to mix with added oxygen.  Coke is burned to heat the solids which are then returned to the vapor zone.  The vapors generated in the combustion zone are removed by suction.  Segregation of the atmospheres in the two zones is achieved by a combination of maintaining equal pressures in the zones and using the solids, being transferred from one zone to the other, to block gas flow."
Patent CA-1135344-A (CA)
Inventor: ROSSING MARTIN A
IPC: A61N1/372
Filed: 1979-11-05
Granted: 1982-11-09
Abstract: ABSTRACT There is disclosed herein a programmable cardiac pacemaker pulse generator utilizing digital circuitry for controlling the provision of card-iac stimulating pulses.  The pulse generator is capable of having the rate, the pulse width, the pulse amplitude, the refractory period, the sensitivity and the mode of operation programmed.  In addition, the pulse generator can have the output inhibited and can respond to programming signals causing a threshold margin test to be performed, effects of closure of the reed switch overridden, a hysteresis function added and a high rate exceeding the normal upper rate limit programmed.  Many of the programmable functions of the pulse generator can either be programmed on a permanent or a temporary basis. The pulse generator further includes means for signaling the acceptance of a programming signal, and means to reset the program acceptance circuit if ex-traneous signals are detected as programming signals.  The program signal acceptance circuit performs several different checks on the detected pro-gramming signal including a parity check, an access code check and determin-ing if the proper number of signals were transmitted within a given time. The timing circuit of the pulse generator includes a crystal clock oscilla-tor and counter means for counting the clock pulses therefrom to determine the rate of the pacemaker.  The pulse width of each pacemaker pulse is determined by using a voltage controlled oscillator in place of the crystal oscillator to obtain energy compensation due to the battery voltage decreas-ing with time.
Patent CA-1143027-A (CA)
Inventor: KLINE RALPH L
IPC: H04L7/00
Filed: 1979-12-03
Granted: 1983-03-15
Abstract: D-21,802 ERROR DENSITY DETECTOR           by RALPH  LeRoy Kline ABSTRACT OF THE DISCLOSURE     An error detector provides an output pulse whenever an error is detected in the framing pattern of a digital transmission system.  A sample timer provides a sample pulse at the beginning of each sample interval and a sample clock pulse during the sample pulse.  The sample interval includes a plurality of frames and the sample pulse occurs intermediate of the framing pattern.  A logic arrangement is responsive to the error output pulse, the sample clock pulse and the sample pulse for providing an alarm indication when the number of error pulses equals or exceeds a first prede-termined number during a sample interval.  Conversely, the logic arrangement eliminates the  alarm indication if the number of errors in a subsequent sample interval is less than a second predetermined number.
Patent CA-1150401-A (CA)
Inventor: SANDERSON HENDRIK J
IPC: G11B5/588
Filed: 1979-12-13
Granted: 1983-07-19
Abstract: 1.8.1979                                        PHN 9305 ABSTRACT:                            Method and apparatus for positioning magnetic heads in a two-head helical scan video recorder, suitable control signals being generated for making the heads follow the tracks by means of piezo-electric transducers.  The control signals applied to the two transducers are compared and when these control signals deviate from each other more than to a prede-termined extent the one transducer receives the same control signal as the other transducer, so as to ensure that the two heads follow consecutive tracks.
Patent CA-1137147-A (CA)
Inventor: DRAGOY JENS T
IPC: F22B1/28
Filed: 1979-12-18
Granted: 1982-12-07
Abstract: TITLE            ELECTRIC LIQUEFIED PETROLEUM GAS VAPORIZER            ABSTRACT OF THE DISCLOSURE           A compact, economical electric liquefied petroleum gas vaporizer is disclosed capable of vaporizing ten to forty gallons or more per hour liquefied petroleum gas.  The unit utilizes a metal casting as a pressure vessel and heated in-terface between a source of heat and the liquefied petroleum gas as well as a heat sink.  The casting has a closed internal cavity separated into two chambers by an integral barrier.          Multiple small passageways in the barrier at the end of the casting opposite the point of entry of the liquefied petroleum gas connect the two chambers in the casting. The passageways aid in creating a turbulent flow which improves heat transfer.         Electric resistance heaters are received in bore openings in the barrier between the two chambers.  The heat generated by the resistance heaters is disseminated uniformly throughout the casting surrounding the enclosed chambers.  Temperature sensing and control means are located adjacent the resistance heaters to control the temperature of the casting.  A lique-fied petroleum gas inlet at the end of the casting opposite the multiple small passageways in the barrier connects with one chamber in the casting.  A gas outlet connects with the other chamber for discharge of the gas vaporized during its passage through the vaporizer.