baber/WOPTO huggingface dataset:
Patent CA-2030869-A1 (CA)
Inventor: USHITORA AKIHIRO
IPC: F04F1/14
Filed: 1990-11-26
Abstract: A vacuum pump control apparatus for an evacuating type waste water collecting system is disclosed.  In the system, waste water discharged from houses and facilities is collected into a water collecting tank by means of vacuum sewer pipes provided with a negative pressure therein and the waste water collected in the water collecting tank is discharged by means of a booster pump while the air in the water collecting tank is discharged by means of a vacuum pump. The vacuum pump control apparatus comprises gas-liquid ratio detection means for detecting the ratio of the amount of air to the amount of waste water to be collected into the water collecting tank; and control means for controlling the operating time of the vacuum pump based on the gas-liquid ratio detected by the gas-liquid ratio detecting means so that a target value of the gas-liquid ratio is recovered when it falls below the target value.  By this arrangement, the gas-liquid ratio within the vacuum sewer pipes is kept to an ideal value to thereby prevent an air lock forming in the vacuum sewer pipes.
Patent CA-2032968-A1 (CA)
Title: Thermoplastic polyurethane and a process for the preparation thereof
Inventor: VAN DER WAL HANNO H R
IPC: C08G18/00
Filed: 1990-12-21
Abstract: ABSTRACT     This invention relates to a process for preparing a thermoplastic polyurethane resin and the resin prepared thereof.  In particular, the invention relates to a thermoplastic polyurethane resin, having enhanced demold and physical properties, which is prepared from a polyol, a dihydroxyl chain-extending agent and organic diisocyanate in the presence of from 0.02 to 0.5 mole per mole of polyol of an amine compound containing at least two primary amine groups.   37,793-F
Patent CA-2033388-A1 (CA)
Title: Protective sleeves for scope probes for use in high pressure or vacuum environments
Inventor: GERWERS HANK
IPC: G02B23/24
Filed: 1990-12-28
Abstract: ABSTRACT OF THE INVENTION Protective sleeve, into which a conventional fiberscope or videoscope is inserted, is mounted so as to extend into a high pressure or high/ultra-high vacuum chamber to permit inspections or monitoring therewithin. In a first embodiment the protective sleeve comprises first and second body portions, each comprised of bellows-like flexible stainless steel.  The second section has a length substantially corresponding to the articulatable distal end of a fiberscope or videoscope to be articulatable therewith.  In a second embodiment, the first body portion is rigid, and axially displaceable relative to a gimballed mounting assembly through which it passes into the chamber.  In a third embodiment, the first body portion comprises a shape memory ally.  In both the second and third embodiments the second body portion, as in the first embodiment, comprises flexible stainless steel so as to be articulatable upon the articulation of a probe disposed therein.  In a fourth embodiment, the first body portion is flexible stainless steel and the second body portion is rigid.
Patent CA-2035983-A1 (CA)
Inventor: CHIU CHARLES C
IPC: C04B37/02
Filed: 1991-02-08
Abstract: A carbonaceous cement for joining carbon and graphite shapes contains carbonaceous particles, a furan and catalyst, and a thermosetting resin resistant to high temperatures when cured. The cement forms bonds of superior strength at high temperatures encountered during curing of high-performance composites.
Patent CA-2036184-A1 (CA)
Title: System and method for flow triggering of pressure supported ventilation
Inventor: KIMM GARDNER J
IPC: A61M16/20
Filed: 1991-02-12
Abstract: The system and method for flow triggering pressure supported ventilation include a source of a predetermined, preinspiratory, constant flow of breathing gas to a patient, one or more flow sensors for measuring the rate of gas flow in a flow path communicating with the patient, means for determining when inhalation from the flow path has occurred, and means for generating pressure support in the delivered gas flow in response to inhalation by the patient, means to terminate pressure support when inspiratory phase concludes, and means to reestablish the predetermined, preinspiratory, continuous flow of breathing prior to the patient's next inspiratory effort. A plurality of individual gas sources preferably provide a controlled mixture of breathing gas. In combination with pressure support to the patient during the inspiration effort, the flow triggering strategy of the invention offers significant improvements in providing breath support to patients having weakened respiratory capabilities.
Patent CA-2036897-A1 (CA)
Title: Apparatus for oxygenating a patient
Inventor: ZANDER ROLF
IPC: A61M16/00
Filed: 1991-02-22
Abstract: ABSTRACT          A method characterized in that the oxygen applicator is so constructed that it supplies pure oxygen in a directed flow and solely via the nose and in that the apparatus additionally comprises  a  oneway  valve  which  can  be  inserted  in substantially sealing-tight manner into the mouth of the patient, the one-way valve opening only upon gas outflow, otherwise closing and allowing excess oxygen and expired air to escape solely through the mouth.
Patent CA-2037510-A1 (CA)
Title: Communicating system
Inventor: LACAS MARK A
IPC: G10H1/00
Filed: 1991-03-04
Abstract: COMMUNICATING SYSTEM                   Abstract of the Disclosure Stations in a sequence accepting a vector from preceding stations in the sequence communicate data packets to other stations in the sequence.  Each station receiving the vector becomes spliced out of the sequence by communicating such a desire to the preceding station, which then provides for the passing of the vector to the station following the next station.          Alternatively, an individual station (not in the sequence) between the communicating and next stations can be spliced into the sequence by communicating to all stations such a desire before any response from the next station.  If the next station does not respond to the communicating station, the communicating station can splice the next station out of the sequence and provide for the passing of the vector to the following station.          Some or all stations may be in a performance mode higher than a set-up mode.  Any station preprogrammed to be active in the sequence and to operate in the performance mode may initiate the operation of the performance mode sequence when the stations are operating in the set-up mode.  In each cycle, if no station in the performance mode requests the operation to continue in such mode, the stations will revert to the set-up mode.  If several successive stations become lost from the sequence, the sequence becomes patched by a special communication from each station to patch the next station into the sequence.  In a start-up operation, a first station identifies itself by a communication to the other stations and the special communication in the sequence described in the previous sentence to progressively patch the other stations into the sequence.
Patent CA-2041217-A1 (CA)
Title: Containment basin assembly for chemical storage tank
Inventor: HALL CHRISTOPHER C
IPC: B65D90/24
Filed: 1991-04-25
Abstract: Abstract A containment basin assembly for receipt of a tank of liquid chemical or the like is disclosed wherein a mounting stand for the tank is integral with the basin and positioned off-center therein.  A bucket can be conveniently located underneath the manifold valve or other liquid dispensing conduit connected to the tank so that spilled or leaking liquid from the valve or conduit can be easily removed for proper disposal.
Patent CA-2041444-A1 (CA)
Title: Polyamide-epichlorohydrin resin
Inventor: CHAN LOCK L
IPC: C08L77/06
Filed: 1991-04-29
Abstract: R.I.CAN.C-2248  4-23-91 ABSTRACT OF THE DISCLOSURE     This invention describes a method for making a thermosetting polyamide-epichlorohydrin  wet  strength  resin  which  contains substantially reduced amounts of organic-chlorine contaminants while its wet strength property remains comparable to commercial polyamide-epichlorohydrin  resins.     The  reduction  of   the contaminants is attained by reacting less than the total amount of epichlorohydrin with polyamide at any one time to substantially react all of the epichlorohydrin with the polyamide while retaining a part of the dual reactive functionality of the epichlorohydrin to provide thermosetting wet strength to the resin.
Patent CA-2042176-A1 (CA)
Title: Diametral runout reducer
Inventor: PECK DAVID E
IPC: F16C3/02
Filed: 1991-05-09
Abstract: An apparatus which may be used to drivingly engage a rotating shaft, reduce the effect of the diametral runout thereof and drive a rotary sensor including a sleeve placed coaxially about the rotating shaft and drivingly engaging the shaft by means of mating splines. Any diametral runout present in the rotating shaft is directly imparted to the driven end of the sleeve. A spherical annular protrusion extends radially outwardly from the sleeve and slidingly engages bore having a central axis coincident with the preferred axis of rotation. In this manner, the center of the spherical annular protrusion, and consequently that portion of the sleeve, is maintained coincident with the preferred axis of rotation. The opposing end of the sleeve drivingly engages the rotary sensor with mating splines. If diametral runout is present in the rotating shaft, the sleeve will gimble about the center point of the spherical annular protrusion. A reduction in runout will be realized which is in proportion to the ratio of the distance from the center point of the spherical protrusion to the driven end versus the distance from the center point to the driving end.
Patent CA-2042529-A1 (CA)
Title: Polysaccharide article and uses therefor
Inventor: RHA CHOKYUN
IPC: B41M5/165
Filed: 1991-05-14
Abstract: Use of degraded or reduced molecular weight polymers in encapsulation are disclosed. Short chain polysaccharide derivatives such as an ionic cellulose derivative hydrolyzates are used in forming capsules by combining the short chain polysaccharide derivatives with another polymer.      Substances designed to be encapsulated serve as nuclei around which coacervate droplets are formed.      The short chain charged polymer includes degradation products of polysaccharide derivatives having an average degree of polymerization in the range of 5 to about 500.      Methods of using capsules for delivering or storage of oils, and other substances are disclosed. The invention also discloses use of capsules in food, feed, pharmaceutical, cosmetic and personal care products and in the coating of paper with microscopic rupturable capsules containing printing fluid.
Patent CA-2044770-A1 (CA)
IPC: G03B27/62
Filed: 1991-06-17
Abstract: A system for efficiently feeding normal sized and oversized documents into different imaging positions overlying an imaging platen. All documents are initially fed onto the platen from an infeeding position desirablefor normal documents substantially downstream from the upstream end of the platen. A normal document is only fed unidirectionally downstream into an imaging position. A sensed oversized document is initially fed downstream, but then, after its trail edge has cleared the infeeding position, it is reverse fedtowards the upstream end of the platen into a special imaging position partiallyoverlying the normally unused upstream portion of the platen. A baffle normally directly overlies that area of the platen. During the initial reverse movement of an oversized document his baffle is pivoted upwardly at its downstream edge, at the infeeding position, to provide a document guide surface under the baffle. The baffle is then lowered onto that portion of the oversized document now extending thereunder before its imaging to provide an imaging background surface, and may be raised again for downstream ejection of the oversized document. For normal documents the baffle may remain flat on the platen.
Patent CA-2044838-A1 (CA)
Title: Process and system for melting a charge in a furnace
Inventor: JOUVAUD DOMINIQUE
IPC: C21C5/52
Filed: 1991-06-18
Abstract: Process for melting a furnace charge, with post-combustion of the smokes by injecting an oxygenated gas in the furnace atmosphere as a series of jets flowing according to a tangential component in the space between electrodes and cylindrical furnace partition of the furnace, in a direction of injection so as to produce a rotary gas current about the vertical axis of the furnace and preferably in at least two series as two stepped levels to produce gas currents which rotate in opposite directions. Applications to electrical furnaces for the production of steel or ferro-alloys.
Patent CA-2046625-A1 (CA)
Title: Impedance-matching coupler
Inventor: MARGULIS WALTER
IPC: H01P3/08
Filed: 1990-12-06
Abstract: The invention relates to the coupling of electric signals to and from high-speed electronic components, being particularly suited to couple high-frequency signals or very host pulses to diode lasers, and from high-speed photodiodes. The coupler consists of a device formed by joining at least two diverse planar transmission-line structures, the central signal-carrying conductor (22, 31) being shared among all the structures so joined, while the ground planes (26, 27, 29; 32, 33; 34, 36) maintain the positional relationship to said conductor that characterize each of the structures so joined. The characteristic impedance change, from 50-ohm usual line impedance to 5-ohm diode impedance is achieved gradually along the device through the cumulative effect of the individual impedance changes of each transmission-line structure forming said coupler, which result from the gradual change of the dimensions of the cross-section along said coupler.
Patent CA-2049996-A1 (CA)
Title: Process and device for recovering hydrocarbons from a gas-air mixture
Inventor: HOLTER HEINZ
IPC: B01D5/00
Filed: 1991-01-19
Abstract: (57) Abstract A process and a device for recovering hydrocarbons from a gas-air mixture operates in the following manner: first the gas-air mixture is cooled and caused to condense.  The hydrocarbons still remaining in the gas-air mixture after condensation are burned in an internal combustion engine.  The power thus generated by the engine is used to operate the cooling installation used for the cooling and condensation processes.  The cooling installation is so designed and run that the gas-air mixture is cleansed as far as possible of hydrocarbons and impurities on passing through the installation.  Fuel is metered into the gas-air mixture down-stream of the cooling installation and upstream of the internal combustion engine.
Patent CA-2050559-A1 (CA)
Title: Data communication network and method of operation
Inventor: BABCOCK JOHN D S
IPC: G06F15/173
Filed: 1991-09-03
Abstract: DATA COMMUNICATION NETWORK AND METHOD OF OPERATION Abstract A data communication network having node arrays with each node array having nodes coupled with data systems served by the network. Each array node isinterconnected by secondary transmission paths to each other array node for exchanging data between array nodes. In addition, each array node is interconnected by primary transmission paths with a corresponding array node of adjacent node arrays for use in establishing ring transmission paths between node arrays with each ring transmission path interconnecting corresponding array nodes. Control apparatus selectively interconnect primary transmission paths and secondary transmission paths in a precedence order to establish network communication paths between thedata systems.
Patent CA-2052075-A1 (CA)
Title: Compound, preparation and use
Inventor: AUSTIN PETER W
IPC: C07C323/61
Filed: 1991-09-23
Abstract: ABSTRACT                  COMPOUND, PREPARATION AND USE           A compound of the formula   in which R1 and R2 taken together, and R3 and R4 taken together, independently represent a polymethylene chain having 3 or 4 carbon atoms, or a polymethylene chain having 3 or 4 carbon atoms substituted by at least one lower alkyl radical having from 1 to 4 carbon atoms, and R5 to R8 are independently hydrogen, hydrocarbyl or substituted hydrocarbyl.  Typically R1 and R2 and also R3 and R4 complete a trimethylene ring, R5 and R7 are each hydrogen and R6 and R8 are alkyl such as methyl.  The compounds have microbiological activity.
Patent CA-2053714-A1 (CA)
Title: Graft polyvinyl acetals having acetal groups from etherified -hydroxy(poly)alkoxyalkanals, processes for their preparation and their use
Inventor: GUTWEILER MATTHIAS
IPC: C09K23/52
Filed: 1991-10-18
Abstract: Hoe 90/F 320 Abstract of the disclosure:            Graft polyvinyl acetals having acetal groups from etheri-fied .omega.-hydroxy(poly)alkoxyalkanals, processes for their preparation and their use Polymeric  acetals of polyvinyl alcohols  grafted onto polyalkylene oxide graft bases or onto polyurethane graft bases,  which  contain  acetal  groups  from etherified .omega.-hydroxy(poly)alkoxyalkanals of the formula  (I),  and processes  for their preparation by  acetalization of corresponding graft polyvinyl alcohols are described.            The polymeric acetals according to the invention are polymers which are plasticized internally and in general obtainable in solid form and which can be processed to films,  shaped articles  or coatings  by thermoplastic methods without external plasticizers. Mixed acetals with other aldehydes can also be prepared and allow wide variants in the properties, inter alia the solubilities in water or in organic solvents. The polymeric acetals according to the invention can be processed or used in bulk, for example from the melt, or as organic or aqueous solutions or as aqueous dispersions.            The wide-ranging solubility spectrum, the glass transi tion temperatures which are decidedly reduced in compari-son with polyvinyl butyral, the thermoplastic process-ability without external plasticizers,  the crosslink-ability by foreign agents, the good adhesive and adhesion capacity on diverse solid materials, the neutral corro-sion properties on metals  and the dispersibility in aqueous media open up a wide industrial field of use to the polymeric acetals according to the invention,  in particular, for example, as binders in organic or aqueous solutions or dispersions or in products to be used in the molten state, preferably in varnishes, coating composi-tions,  adhesives,  dispersing agents,  pigment binders, printing inks, ceramic green films, sizing agents, fiber binders, paper, photographic printing plates and photo-resist material, and as shaped articles and transparent intermediate films for laminated glasses.
Patent CA-2058558-A1 (CA)
Inventor: MUGGLESTONE PETER R
IPC: F16C29/06
Filed: 1991-12-30
Abstract: ABSTRACT OF THE DISCLOSURE         A linear motion bearing assembly is provided having a rail, a bearing carriage supported on the rail by rolling elements, the carriage having z pair of depending legs for movement along the rail and a pair of interlocking end cap/return track elements.  The depending legs have load bearing grooves formed on an inner longitudinal surface and partial return tracks form on an outer longitudinal surface. The end cap/return track elements form a complimentary portion of the return track and have rolling element turnaround, formed therein to interconnect the load bearing and return tracks.  The end cap/return track elements interlock to each other around the bearing carriage and are supported thereon by integral support structure.  Sealing means are optionally provided for adverse operating conditions.
Patent CA-2059472-A1 (CA)
Title: On site destination label printing system for postal trays and sacks
Inventor: MIKEL DENNIS A
IPC: B07C3/18
Filed: 1992-01-16
Abstract: A system is shown and described wherein a portable printer is used to produce tags for attachment to mail trays.  The printer is uploaded with plans that are the same as sort plans stored in the  memory of a sorting machine with which the printer is to be used.  The same sort plan that is selected for operation of the sorting machine will be input into the printer so that tags can be printed and attached to mail trays on an as needed basis.  These tags can be colored coded so that the targeted day of delivery of the mail can be indicated.  Act tags can be printed by scanning the mail tray tags.
Patent CA-2061160-A1 (CA)
Inventor: GESLEY MARK A
IPC: H01J37/12
Filed: 1992-02-13
Abstract: A field emission source is used in conjunction with a three element asymmetric lens system to provide an electron gun having greater magnitude beam currents focused on a smaller spot size than has been previously possible for intermediate energy beams. The three element asymmetric lens system has a lower spherical aberration than prior art electrostatic guns and a very low chromatic aberration coefficient, enabling precise focusing of beams with large currents and energy spreads. The electron gun produces high current densities in beams focused on small spot areas, despite the relatively large acceptance angle and energy spread of the source beams.
Patent CA-2062840-A1 (CA)
Inventor: HIROKANE JUNJI
IPC: G11B7/26
Filed: 1992-03-12
Abstract: A method of fabricating a glass substrate for a disk including guide track portions and sector (or track) address portions of which grooves and pits have different depths, providing the steps of (i) forming a photoresist film over a glass substrate for an optical memory element, (ii) carrying out exposure to define a plurality of guide track portion formation areas and sector (or track) address portion formation areas interposed between the guide track portion formation areas, and carrying out development so as to cause the glass substrate in the address portion formation area to appear and to cause the photoresist film in the guide track portion formation area to remain as a first residual film, (iii) carrying out first etching to sink the glass substrate in the address portion formation area by a predetermined thickness such that a pit is formed and to remove the surface layer of the first residual film such that a second residual film is formed, (iv) carrying out first ashing to remove the second residual film so that the glass substrate in the guide track portion formation area appears, (v) carrying out second etching to form a groove in the guide track portion formation area and to further sink the pit in the address portion formation area so that a deeper pit is formed, and (vi) carrying out second ashing to remove a third residual photoresist film which remains between the deeper pit and the groove.
Patent CA-2063645-A1 (CA)
Title: Process for the preparation of polycondensates of glucose and/or maltose and polyhydric alcohols
Inventor: COSMO ROBERT
IPC: A23L33/26
Filed: 1992-03-20
Abstract: Abstract of the disclosure Process for the preparation of polycondensates of glucose and/or maltose and polyhydric alcohols A process  for the preparation of polycondensates  of glucose and/or maltose and unbranched polyhydric alcohols having 3 to 6 carbon atoms, in which one carbon atom can carry an O-galactopyranosyl or O-glucopyranosyl group and the remaining carbon atoms carry hydroxyl groups or every carbon atom carries a hydroxyl group, by melt condensa-tion, which comprises carrying out the polycondensation in the presence of ascorbic acid.
Patent CA-2064955-A1 (CA)
Title: Amino acid derivatives
Inventor: BRANCA QUIRICO
IPC: A61K31/22
Filed: 1992-04-02
Abstract: Abstract The compounds of the formula I    wherein A, R1, R2, R3, R4 and R5 have the significance given in claim 1, in the form of optically pure diastereomers, mixtures of diastereomers, diastereomeric racemates or mixtures of diastereomeric racemates as well as pharmaceutically usable salts thereof inhibit the activity of the natural enzyme renin and can accordingly be used in the form of pharamaceutical preparations in the control or prevention of high blood pressure and cardiac insufficiency. They can be manufactured according to various methods which are known per se.