baber/WOPTO huggingface dataset:
Patent CA-2045672-A1 (CA)
Title: Membrane process for removing water vapor from gas
Inventor: OVERMAN DANA C III
IPC: B01D53/22
Filed: 1990-11-30
Abstract: A process for removing water vapor from water vapor-containing gases is carried out by contacting a feed gas mixture containing water vapor with one side (22) of a semi-permeable membrane (20) selective to the passage of water vapor. A water vapor partial pressure differential is maintained across membrane (20) under conditions such that water vapor selectively permeates through membrane (20) from high pressure side (22) to a lower pressure side (24) of membrane (20). The opposite and lower pressure side (24) is contacted with a dry condensable sweep gas supplied through line (14), which is collected and condensed, thereby causing separation of the sweep gas containing permeated water into an organic liquid phase and an aqueous liquid phase.
Patent CA-2045772-A1 (CA)
Title: Bone pinning system
Inventor: DICARLO PAUL
IPC: A61B17/88
Filed: 1991-06-26
Abstract: 31,533 BONE PINNING SYSTEM          ABSTRACT           An apparatus for securing fractures bones (40,42) in place without the use of wires.  An absorb-able bone pin (50) is inserted in place by a cannulated applicator (lo) which is used to help drill a hole (44) for the bone pin (50) and accurately measure its depth. The applicator (10) has a scaled recess (20) in the handle which is used to measure the progress (depth) of the wire-type drill (30) as it forms the hole.  The drill (30) has a marking (36) or similar means on it for registration with the applicator scale (22).  The bone pin (500 is selected or cut to an appropriate length based on the depth o  the hole (44) and inserted in place by a push rod (52) through the applicator guide tube.  The applicator can have one or two guide tubes, and the tubes can be parallel or at angles to one another, depending on the usage desired.  With a two-tube applicator, it is possible to better maintain the bone's pieces in place under compression until a bone pin is installed.
Patent CA-2046294-A1 (CA)
Title: Frequency synthesizer with control of start-up battery saving operations
Inventor: HEROLD BARRY W
IPC: H03L7/183
Filed: 1990-02-23
Abstract: A frequency synthesizer (10) governed by a battery saving signal (20) having sleep and awake cycles (60, 62) comprises a phase locked loop and a control circuit (70) for enhancing the restart operation of the phase locked loop at the commencement of each awake cycle of the battery saving signal. More specifically, the phase locked loop includes a phase detector (26, 28) for locking the frequencies generated by a reference oscillator (12) and a voltage controlled oscillator (36) by adjusting a signal (38) in a storage device (34) used for governing the voltage controlled oscillator. During the sleep and awake cycles of the battery saving signal, the oscillators and phase detector are inhibited and enabled, respectively, in their operations. The control circuit is operative to inhibit the adjustment of the governing signal until both of the oscillators are determined to be effectively enabled at the commencement of each awake cycle of the battery saving signal to ensure the stored governing signal commences at its desired setting.
Patent CA-2047671-A1 (CA)
Title: Laser amplifier
Inventor: WHITLEY TIMOTHY J
IPC: H01S3/094
Filed: 1990-03-08
Abstract: A laser amplifier having an improved pump efficiency for a given pump power comprises a pump source (46) longitudinally coupled at a plurality of coupling points (47, 48, 49) to an optical fibre (41). By thus coupling the pump power into the fibre (41), a fraction of the pump power is applied to the fibre (41) at each of the coupling points (47, 48, 49). A significant improvement in pump efficiency may be achieved in this way.
Patent CA-2048453-A1 (CA)
Title: Pressurized continuous operating rotary drum filter and method
Inventor: WHITE HAROLD R
IPC: B01D33/06
Filed: 1991-08-06
Abstract: ABSTRACT OF THE INVENTION This invention increases the efficiency and flow rate of rotary drum filtration and makes possible the use of such filtration for volatile and high temperature materials. According to the invention a rotary drum filter unit operates continuously in a pressure vessel and solids are intermittently discharged from the vessel. The filtered solids are scraped from the drum periphery and dropped into a trough in the vessel communicating with a discharge passageway. When the passageway is filled with solids, a shroud, driven by a reciprocating ejector, traps the solids in the passageway. The ejector compacts the trapped solids forming plugs which are sequentially discharged from the pressure vessel. The filter unit is fixed to a removable end head for the pressure vessel which has a wheeled carriage riding in the vessel and the vessel in turn is carried on wheels so that when the end head is released from the vessel, the filter unit can be exposed for service such as the replacement of filter screens and cloths on the drum.
Patent CA-2055677-A1 (CA)
Title: Collapsible ladder
Inventor: TOYCEN JEFFREY E
IPC: E06C1/56
Filed: 1991-11-15
Abstract: b TITLE Collapsible Ladder INVENTOR Jeffrey E. Toycen ABSTRACT OF THE DISCLOSURE A collapsible ladder that is relatively rigid and includes friction means for controlling the rate of deployment. The ladder comprises a plurality of tubular rungs and side support members pivotally connected between each end of adjacent rungs, each side support member comprising a pair of pivotally interconnected tubular links each having a length less than half of that of the rungs. The links have ends with flat surfaces defining a contacting region for contacting the flat surface of an adjacent pivotally interconnected link. Included are pivotal connecting means comprising a first pivot pin disposed in apertures provided in each adjacent pair of links which define a side support member, and a second pivot pin disposed in apertures provided in each end of each rung and the aperture of at least one side support member, the apertures and pivot pins being disposed inwards from the ends of the links to define support arms outside of the pin, the support arms having bearing surfaces that bear on the adjacent link for providing rigidity of the pivotally interconnected links, about an axis passing transversely through the pivot pin and parallel with the rungs, when the ladder in a deployed condition; and a tension applying fastener associated with at least some of the pins for drawing the contacting regions of the links against one another with a force sufficient to provide a frictional force upon pivoting of the links for restricting the deployment rate of the ladder.
Patent CA-2055708-A1 (CA)
Inventor: THOMAS LOUIS
IPC: E04D3/36
Filed: 1991-11-15
Abstract: A roofing washer useful with a fastener having a head and a shank, such as a roofing screw, and provided with an annular lip to restrain the head after the head has been driven past the annular lip.  As molded from a resilient, polymeric material, the roofing washer has a plurality of discrete cavities, which facilitate radial expansion of the annular lip, and a plurality of discrete ribs, which separate the discrete cavities.  In one possible embodiment, each cavity has an inner, generally cylindrical wall, an outer, generally cylindrical wall, and two end walls, each defining a plane oriented at an acute angle relative to a radial plane.  In a different embodiment, each cavity has two planar walls and a curved wall.
Patent CA-2056913-A1 (CA)
Inventor: BERNARD STUART N
IPC: A63F7/20
Filed: 1991-12-04
Abstract: Title Collapsible Game Usable as a Promotional Device ABSTRACT OF THE DISCLOSURE     A collapsible game (10) is disclosed having the rear face (20) of a first panel (14) secured to the back of a box (12) or like product.  A second panel (16) is integrally formed and pivotal about the bottom edge (18) of the first panel (14) between a first, abutting position and a second, angular position.  The panels (14, 16) are formed of paper stock with the box (12) and the support surface upon which the box (12) is placed providing external support for the panels (14, 16).  A goal (48) is simultaneously pivotal with the panels (14, 16) between a first, flat condition intermediate the panels (14, 16) in the first position and a second condition with the goal (48) three dimensionally spaced from the panels (14, 16) in the second position.  The goal (48) is lntegrally formed from a single blank and is planar in the flat condition.  The panels (14, 16) are releasably held in the abutting position by side and top flaps (40, 44) lntegrally formed with the panels (14, 16) when the game is in its manufactured, collapsed, one-plece condition. The panels (14, 16) are releasably held and removably fastened in the abutting position by a tab (106) and a slot (108) die cut in the panels (14, 16) after the flaps (40, 44) have been released.
Patent CA-2062146-A1 (CA)
Inventor: FLOREANCIG ANTOINE
IPC: C01G47/00
Filed: 1992-03-02
Abstract: La présente invention concerne un procédé direct de séparation de rhénium d'avec du molybdène et/ou d'autres impuretés en quantité parfois importante, contenus dans une solution de départ à acidité forte, étant entendu que le rhénium et le molybdène se présentent à l'intérieur de composés chimiques,caractérisé en ce qu'on effectue successivement: une fixation de Re par passage de la solution de départ sur un agent de fixation (résine ou solvant) du type amine tertiaire ou secondaire jusqu'à obtenir un agent de fixation chargé de la totalité du Re de la solution de départ et d'un résidu de Mo et/ou des autres impuretés, et un effluent exempt de Re contenant la majeure partie de Mo et/ou des autres impuretés; un lavage par reflux de l'agent de fixation chargé en Re par une solution acide contenant du Re pur pour déplacer le résidu de Mo et des autres impuretés et obtenir un agent de fixation ne comportant que du Re pur et un effluent contenant le Mo et les autres impuretés éluées de même qu'un solde de Re; une élution de l'agent de fixation chargé en Re pur par une solution basique pour obtenir une solution finale de perrhénate pur.
Patent CA-2063703-A1 (CA)
Title: Reversible variable displacement hydraulic device
Inventor: GOADE JAMES C
IPC: F04B49/08
Filed: 1990-08-30
Abstract: Abstract of the Disclosure REVERSIBLE VARIABLE DISPLACEMENT HYDRAULIC DEVICE           Reversible, variable displacement, hydraulic devices are useful in transmitting power from an engine to a driven device.  The hydraulic components of such devices are generally quite bulky and difficulty to center the swash plate thereof.  The subject device (10) includes a pair of servo valves (68,69) adjustably disposed within a case (11) for individually controlling the flow of actuating fluid to and from a pair of hydraulic servo actuators (46,47).  A servo feedback mechanism (107) is provided to mechanically move a valve spool (84) of one of the servo valves to a position for exhausting fluid from one of the servo actuators as the spool of the other servo valve is moved to a position for directing actuating fluid to the other of the servo actuators. The feedback mechanism also moves the spools substantially to their neutral position when a swash plate (21) controlled by the servo actuators reaches a desired angular position after the other spool is first moved to the position for directing actuating fluid to the other servo actuator.  The feedback mechanism is compact and cooperates with the adjustability of the servo valves so that centering of the swash plate is simplified.
Patent CA-2064505-A1 (CA)
Inventor: MOLLARET BERTRAND
IPC: F25J3/08
Filed: 1992-03-31
Abstract: ABRÉGÉ DESCRIPTIF Dans ce procédé opérant par distillation d'air dans une double colonne couplée à une colonne de production par distillation d'argon impur, élimination de l'oxygène contenu dans l'argon impur par conversion catalytique, élimination par adsorption du produit de cette conversion, puis élimination par distillation de l'azote du gaz restant, on produit par distillation de l'argon impur ayant une teneur en oxygène inférieure à 1000 vpm environ, et la conversion catalytique est réalisée en faisant passer l'argon impur et de l'hydrogène en excès, au voisinage de la température ambiante, dans un lit catalytique constitué de particules d'au moins un métal de la famille du platine supportées par un support particulaire à forte surface spécifique.
Patent CA-2064726-A1 (CA)
Title: Monolithic semiconductor harmonic laser sources
Inventor: NORMANDIN RICHARD J F
IPC: H01S3/108
Filed: 1991-06-27
Abstract: Harmonic generation laser sources are disclosed. The sources include a waveguide having a multilayered structure to enhance the harmonic generation. Various embodiments are described, some including an active lasing means built in the waveguide.
Patent CA-2065427-A1 (CA)
Title: Roof sheeting and flashing elastomeric composition
Inventor: CREPEAU ALLEN E
IPC: C08K5/405
Filed: 1990-08-09
Abstract: Ambient temperature curable rubber roofing or sheeting compositions based on ethylene/propylene/diene terpolymer or butyl rubbers cured with the essential curatives of alkylthiourea/sulfur.  Preferably, thiazole or thiuram and dithiocarbamate type accelerators may also be added.
Patent CA-2065438-A1 (CA)
Title: Fluid flow apparatus and process
Inventor: ALLEN DONAVON J
IPC: A45D20/12
Filed: 1990-05-29
Abstract: An apparatus and process for impinging a fluid upon an object to be treated including creating a focused flow (27) in a predetermined direction and placing an object between the focal point (33) of the focused flow and the source of flow (9) for treatment by the fluid therein.
Patent CA-2067241-A1 (CA)
Inventor: NELSON DEANNA J
IPC: A61K38/16
Filed: 1991-08-15
Abstract: A non-immunogenic mixture of hemoglobin based modified monomers and oligomers produced by the polymerization of a hemoglobin based solution in the presence of a three membered heterocyclic ring, i.e. polyether oxirane. The modified hemoglobin composition has a P50 of at least equivalent to the P50 of human red blood cell hemoglobin.
Patent CA-2068093-A1 (CA)
Title: Method and apparatus for silicon nitride precursor solids recovery
Inventor: CROSBIE GARY M
IPC: B01F15/06
Filed: 1992-05-06
Abstract: ABSTRACT OF THE DISCLOSURE           Method  and  apparatus  are  provided  for collecting reaction product solids entrained in a gaseous outflow  from  a  reaction  situs,  wherein  the  gaseous outflow includes a condensable vapor.  A condensate is formed of the condensable vapor on static mixer surfaces within a static mixer heat exchanger.   The entrained reaction product solids are captured in the condensate which can be collected for further processing, such as return to the reaction situs.  In production of silicon imide, optionally integrated into a production process for making silicon nitride caramic, wherein reactant feed gas comprising silicon halide and substantially inert carrier gas is reacted with liquid ammonia in a reaction vessel, silicon imide reaction product solids entrained in a gaseous outflow comprising residual carrier gas and vaporized ammonia can be captured by forming a condensate of the ammonia vapor on static mixer surfaces of a static mixer heat exchanger.
Patent CA-2070702-A1 (CA)
Title: Oil additive concentrates and lubricants of enhanced performance capabilities
Inventor: CONARY GREGORY S
IPC: C10M177/00
Filed: 1992-06-08
Abstract: Case EI-6336 OIL ADDITIVE CONCENTRATES AND LUBRICANTS   OF ENHANCED PERFORMANCE CAPABILITIES     Abstract of the Disclosure Haze formation in additive concentrates containing boron-containing ashless dispersants is inhibited, and improvements in performance capabilities can be realized, by suitably controlling the pH of the concentrate as produced.   Not only does such pH control result in no sacrifice in wear and corrosion inhibition, but it has been found possible by suitable adjustment and control of pH to actually improve the effectiveness of the concentrate in its ability to inhibit wear and corrosion.   Moreover,  such pH control  makes  possible  the  provision  of  compositions  having enhanced extreme pressure properties as seen in the standard L-42 test, and improved antirust performance as seen in the standard L-33 test.
Patent CA-2074730-A1 (CA)
Title: Immobilized polyethylene oxide star molecules for bioapplications
Inventor: MERRILL EDWARD W
IPC: A61K39/00
Filed: 1991-02-28
Abstract: This invention pertains to a method for im-mobilizing polyethylene oxide (PEO) star mole-cules in the form of hydrogels. The PEO star mole-cules are biocompatible and demonstrate non-thrombogenic properties. As such, the PEO star molecules have numerous uses for biomedical ap-plications. The hydrogels contain a high percentage of terminal hydroxyl groups for attachment of af-finity ligands and can be used for separating and purifying therapeutic proteins.
Patent CA-2077878-A1 (CA)
Title: Shedding system with heddles supported at one end thereof and a seam weaving method using the shedding system
Inventor: SANO SEIJI
IPC: D03C3/22
Filed: 1992-09-09
Abstract: A shedding system is disclosed having a plurality of heddles supported at one ends thereof connected to top ends of piston rods of a plurality of pneumatic cylinders.  Driven by the pneumatic cylinders, the heddles are moved vertically upwardly and downwardly to shift the threads passing through the heddles so as to form the shed.  A method of joining a fabric by a woven seam uses the above-mentioned system to form the shed in an array of the threads of an interweaving piece.
Patent CA-2079129-A1 (CA)
Title: Power amplifying circuit capable of producing an output signal having a desired waveform
Inventor: HORI TSUGUO
IPC: H03G3/20
Filed: 1992-09-25
Abstract: For use in amplifying an input signal having an input electric power in response to an amplification control signal  to produce  an output  signal  having an amplified electric power and a desired waveform, a power amplifying circuit comprises a reference signal generator for generating a  reference signal  with  a predetermined waveform which defines the desired waveform.  A multiplier multiplies the reference signal and a power control signal produced by a power control signal generator to produce a level control signal.  A comparator compares the level control signal and a detection signal produced by a detector to produce an error signal.  A driver drives a power amplifier based on the error signal.
Patent CA-2079178-A1 (CA)
Title: Variateur de couple pour porte coulissante
Inventor: BEAUCHOT PIERRE
IPC: E05F15/14
Filed: 1992-09-25
Abstract: Variateur de couple pour porte coulissante. D E S C R I P T I F Le variateur de couple comporte un dispositif supplémentaire constitué d'un pointeau 18 modifiant la pression exercée sur la couronne d'embrayage 11 de la poulie motrice 8 de la courroie 5. Il est monté sur une lame-ressort 20 dont le déplacement est asservi à celui d'une vis 24 se déplaçant dans l'axe de rotation 25 d'une roue dentée 26 entraînée par la courroie. Application à la manoeuvre d'une porte étanche d'entrepôt frigorifique. Figure 2.
Patent CA-2082355-A1 (CA)
Inventor: SAITO KOICHIRO
IPC: A61B10/00
Filed: 1992-11-06
Abstract: ABSTRACT OF THE DISCLOSURE        In one configuration, a urine sampler comprises hollow, cylindrical main stick body that is closed at least at one end and has a plurality of urine collection apertures  formed  in the wall  thereof and,  in another, comprises a  urine  collector  having  a  long  rod-shaped handle, a urine collection member constituted continuously with  the  handle  and  provided  with  urine  collection apertures and a urine accumulator constituted continuously with the base Or the urine collection member, and a urine storage capsule having a cutter for cutting a portion of the urine collector, a urine container for receiving urine flowing in from the urine collector and a lid.   In the second configuration, the urine collector and the urine storage capsule are separate units.  The urine sampler of either configuration is compact and extremely easy to use for collecting a urine sample of the minimum required quantity and, moreover, enables the collected sample to be safely transferred without spilling.
Patent CA-2082705-A1 (CA)
Title: Refrigerant recovery and recycling system
Inventor: SERGIUS DAVID W
IPC: F25B45/00
Filed: 1992-11-12
Abstract: ABSTRACT OF THE DISCLOSURE A refrigerant recovery and recycling system recovers refrigerant from refrigeration equipment, removing contaminants, for storage and eventual reuse. The system includes a separation unit in which the refrigerant is separated from the contaminants, preferably by distillation which is at least partially driven by waste heat produced by the compressor which compresses the refrigerant for storage.
Patent CA-2083727-A1 (CA)
Inventor: CHAKRAVARTI VANDANA S
IPC: H04M3/54
Filed: 1992-11-25
Abstract: A facility is provided for redirecting a call from one destination point in a communications network to another destination point in the event that the call is not answered within a predetermined period of time, or in the event that after the call has been answered, the called party requests such redirection.
Patent CA-2084061-A1 (CA)
Title: Growth hormone releasing factor analogs
Inventor: FELIX ARTHUR M
IPC: A61K38/00
Filed: 1992-04-01
Abstract: Novel growth hormone releasing factor analogs are presented having a sequence of twenty-nine to forty-four amino acids (SEQ ID NO  : 6) wherein Xaa at position 1 is His, 3-MeHis, desNH2His, Tyr, or desNH2 Tyr; Xaa at position 2 is Val, Leu, Ile, Ala, D-Ala, N-Methyl-D-Ala, Gly, Nle, or Nval; Xaa at position 8 is Gln, Ser, or Thr; Xaa at position 15 is Ala or Leu; Xaa at position 27 is Met, Nle or Leu; Xaa at position 28 is Ser or Asn; Xaa at position 29 is an amino acid residue sequence (SEQ ID NO : 7) or fragments thereof where the fragment is reduced in number by one to fifteen amino acid residues from the carboxyl-terminus, where the carboxyl terminus can be the free carboxylic acid or the corresponding amide, and the pharmaceutically acceptable acid or base addition salts thereof. The novel growth hormone releasing factor analogs have enhanced potency for the release of growth hormone and enzymatic stability, improved half-life stability in aqueous solution, and can be administered to a subject having a deficiency of growth hormone or for improvement of growth performance in livestock and other warm blooded animals and in fish and other cold blooded marine animals.
Patent CA-2084144-A1 (CA)
Title: N-olefin isomerization process
Inventor: HUSS ALBIN JR
IPC: C07C5/27
Filed: 1992-11-30
Abstract: N-OLEFIN ISOMERIZATION PROCESS           Abstract A process for conversion of linear olefins to corresponding iso-olefins of the same carbon number comprises contacting a linear olefin-containing organic feedstock with a catalyst comprising ZSM-22 having a crystal size in which the largest dimension is no greater than 0.5 micron, and in which the ratio of the second largest dimension to the largest dimension ranges from 0.5 to 1.
Patent CA-2084201-A1 (CA)
Title: Remote tracking system particularly for moving picture cameras and method
Inventor: PARKER JEFFREY L
IPC: G01B11/26
Filed: 1991-05-31
Abstract: The system includes a mobile remote unit sensitive to infrared (IR) signals transmitted by a base or stationary unit and an IR transmitter which is placed behind a rotating lens whose position at any time is known with precision resulting in the IR signal being "scanned" across an area. The remote unit detects when the peak strength of the signal occurs and provides this data via an RF signal to the base unit wherein the exact effective angle between the axis of the IR signal and the remote unit creates an error signal used by the base unit to position the camera mounted thereon. Transmitters for TILT and two PAN positions, PAN 1 and PAN 2, are used to include range calculations for ZOOM functions. Command circuitry to override the automatic tracking function is provided in each of the units.