baber/WOPTO huggingface dataset:
Patent CA-2094842-A1 (CA)
Title: Intrusion detection and cancellation system and method
Inventor: CRAMPTON DAVID L
IPC: H01Q3/26
Filed: 1993-04-26
Abstract: ABSTRACT OF THE DISCLOSURE      An intrusion detection and cancellation system (100) for use in a communication system having  an antenna (104) and a mechanism (114) for receiving a composite signal including an input signal and an interfering signal.  The invention  includes an intrusion detection and cancellation  receiver (102) having a first circuit (132, 134, 136, 138) for isolating the interfering signal from the composite signal  to provide a first signal.  A second circuit (146, 160, 162) is provided for modifying the first signal to  provide a  cancellation signal that is equal in magnitude and opposite in phase to the inter-fering signal.  Finally, the cancellation signal is applied to the interfering signal for eliminating  the interfering  signal from the composite signal.   In a preferred embodiment,  composite signals are received by antenna feed elements (114) and are detected by corre-sponding directional couplers (126).   The composite signal is directed to the receiver (102) via a beam selection switch (106) and is mixed with a local oscilla-tor signal and narrow band filtered to isolate the inter-fering signal.  The isolated interfering signal is subjected to amplification, attenuation and phase shift-ing to provide the cancellation signal which is then distributed to a power combiner (110) for canceling the interfering signal.  The output signal represents the composite signal minus the interfering signal and is transmitted to a satellite repeater. Parallel receiver paths are provided for input signals of two different polarizations.
Patent CA-2096287-A1 (CA)
Title: Water dilutable, polyester polyols and their use in coating compositions
Inventor: BLUM HARALD
IPC: C08G18/66
Filed: 1993-05-14
Abstract: The present invention relates to water dilutable, urethane group-containing polyester polyols having an acid number of 6 to 45 mg KOH/g, wherein 25 to 100% of the acid groups are neutralized by bases, a hydroxyl number of 20 to 250 mg KOH/g, a molecular weight (Mw) of 2,000 to 150,000 and a urethane content (-NH-CO-0-) of 2 to 16% by weight, wherein the polyester polyol is the at least partly neutralized reaction product of a) 35 to 90% by weight of branched polyester polyols having a hydroxyl number of 40 to 600 and prepared from a1) 0 to 60% by weight of monocarboxylic acids, a2) 6 to 65% by weight of di- and/or tricarboxylic acids or their anhydrides, a3) 10 to 70% by weight of alcohols, a4) 0 to 35% by weight of monoalcohols, a5) 0 to 30% by weight of hydroxycarboxylic acids, aminocarboxylic acids, lactones, lactams and aminoalcohols and a6) 0 to 45% by weight of polycarbonate polyols, b) 0.5 to 8.5% by weight of hydroxycarboxylic acids c) 0 to 15% by weight of compounds containing OH, NH and/or NH2 groups and having a molecular weight of 32 to 500, d) 3 to 33% by weight of compounds containing isocyanate groups and having a molecular weight of 168 to 2,000 and e)  0 to 45% by weight of polycarbonate polyols, wherein the percentages of a) to e) and a1) to a6) add up to 100% and wherein the urethane group-containing polyester polyols contain 1 to 25% by weight of carbonate groups (-0-CO-0-) incorporated through components e) and/or a6).
Patent CA-2096342-A1 (CA)
Title: Environmentally protected connection
Inventor: CINIBULK WALTER
IPC: H01R13/52
Filed: 1991-11-15
Abstract: Abstract of the Disclosure A cable connection is environmentally protected using an assembly which comprises a polymeric sleeve positioned over the coupling nut of the connector and a segment of the cable adjacent the connector, the polymeric sleeve being secured to said coupling nut so as to prevent motion between the sleeve and the nut and a layer of encapsulant positioned between at least a portion of the polymeric sleeve and the underlying cable, the encapsulant providing a circumferential environmental seal between the cable and the sleeve while permitting rotational motion between the cable and the sleeve. A further layer of encapsulant preferable extends from the coupling nut over the hardware mounting the connector receptacle into a bulkhead. This further layer of encapsulant is preferable contained in a cap to which a force is applied by a flange provided in the polymeric sleeve. The encapsulant is preferable a silicone gel.
Patent CA-2098576-A1 (CA)
Title: Optically controlled transducer
Inventor: EMO STEPHEN M
IPC: F16K31/44
Filed: 1991-12-11
Abstract: An optically controlled fluid powered actuator is disclosed and includes a primary fluid valve positioning transducer which responds to optical binary coded control words to position a fluid. The actuator has a pair of opposed stacks of piezoelectric elements with the relative lengths of the piezoelectric elements in each stack being in the same ratios as the relative weights of bits in the control words. There are two sets of optically actuated electrical switches each responsive to control words to energize corresponding ones of the piezoelectric elements in an associated stack of elements. A first class lever has one end coupled to a controlling portion of a fluid valve and the other end interposed between the stacks of piezoelectric elements so that the lever can translate motion of elements in a piezoelectric stack into fluid valve actuation. A fluid powered electrical generator provides the sole source of electrical energy for the piezoelectric elements.  A pair of optical fibers convey the optical binary coded control words in the form of a wavelength division multiplexed optical signal to corresponding ones of the sets of switches.
Patent CA-2099756-A1 (CA)
Title: Electrically controlled valve having a totally leakproof valve plug
Inventor: SIMAR PATRICK
IPC: F16K11/087
Filed: 1993-06-29
Abstract: ABSTRACT OF THE DISCLOSURE      The present invention relates to an electrically controlled leakproof valve having a fluid feed channel and at least one channel for delivering said fluid, rotary displacement of a distributor plug in said valve being under the control of an actuator.  The actuator comprises an axially pierced rotor through which the fluid from the feed channel flows without headloss, the actuator being connected to the valve body in leakproof manner without using dynamic sealing devices.  The present leakproof valve is particularly suitable for use in corrosive environments, and in particular under cryogenic conditions.
Patent CA-2100232-A1 (CA)
Inventor: NAGPAL VIJAY
IPC: B21K1/30
Filed: 1993-09-23
Abstract: A forging die and a forging die manufacturing method for extruding helical gears wherein the lead end face of each die tooth is made up of harmonious S-shaped curves with each curve having maximized-radii contours.  The shape of the S-shaped curves is formed by dividing the cylindrical surface at the lead end face and the full depth perimeter into an equal number of equally spaced points, connecting these points up into pairs so as to establish the shortest distance between the pairs of points and using these pairs as the end points for the S-shaped curves.
Patent CA-2101902-A1 (CA)
Title: Fluid treatment apparatus and method
Inventor: DONLAN FRASER P JR
IPC: H01L21/304
Filed: 1993-08-04
Abstract: FLUID TREATMENT APPARATUS AND METHOD                          Abstract A new apparatus for treating substrates with fluids, as well as a corresponding fluid treatment method, is disclosed. The new apparatus  includes  a new configuration of fluid jet injectors  which  substantially  overcomes  the  problem  of dragout, in which fluid impinged upon an area of a substrate is  retained  on  that  area,  preventing  fresh  fluid  from reaching  the  impinged  area.  This  new  configuration  also avoids  imposing torques  on  substrates,  and  substantially reduces the need for rollers and guides for transporting substrates.
Patent CA-2102313-A1 (CA)
Inventor: BECK CARL R
IPC: B01J27/12
Filed: 1992-04-24
Abstract: A process for controlling the regeneration of boron trifluoride catalyst complexes in the production of carboxylic acids and other products using boron trifluoride hydrates as a catalyst. Catalyst strength is determined by measuring the electrical conductivity of the catalyst recovered from hydrolysis. If the conductivity is greater than a predetermined value, the hydrolysis water rate is reduced and if the conductivity is leas than a predetermined value, the hydrolysis water rate is increased. Conductivity is determined by a toroidal conductivity sensor and a control valve responsive to operation of the conductivity sensor serves to increase or decrease the flow rate accordingly.
Patent CA-2102611-A1 (CA)
Inventor: JOACHIM CLIFFORD A
IPC: F16D31/02
Filed: 1992-05-07
Abstract: A hydraulic ball coupling assembly (1) comprises an inner hub (2) and an outer hub (3) disposed for relative coaxial rotational engagement.  The inner hub (2) includes a continuous sinuate recessed track (4) extending circumferentially around the cylindrical outer surface (5). The outer hub (3) includes a plurality of uniformly spaced axially extending grooves (6) on the inner cylindrical surface (7).  The grooves (6) extend in a direction substantially normal to the general effective direction of the sinuate track (4). A slider (10) is reciprocally disposed within each groove (6) and located in the intersecting region (11) of the sinuate track (4) and the respective groove (6) such that relative rotation of the inner and outer hubs (2, 3) causes each slider (10) to oscillate axially within its respective groove (6) while traversing the track (4). The grooves (6) and track (4) contain a hydraulic fluid of suitable viscosity to provide fluid resistance to the oscillation of the sliders (10) and thereby permit transmission of torque between the inner and outer hubs (2, 3).
Patent CA-2103130-A1 (CA)
Title: Preparation of polyesters from polyethers by an ester-insertion process
Inventor: YANG LAU S
IPC: C08G63/676
Filed: 1993-11-15
Abstract: Polyesters are prepared by a new ester-insertion reaction of a polyether and a cyclic anhydride in the presence of a Lewis acid catalyst. The process is advantageously used to convert polyether polyols recovered from polyurethanes into curable unsaturated polyester resins.
Patent CA-2104840-A1 (CA)
Title: Organo-nickel catalyst and catalytic olefin process
Inventor: KNUDSEN RONALD D
IPC: C08F10/00
Filed: 1993-08-25
Abstract: Catalytic compositions and catalytic processes are provided. The catalytic compositions are produced by the process that comprises contacting an organonickel compound with a cyclicazacarbyl compound. Optionally, one or more catalytic promoters can be present in the catalytic compositions. Additionally, one or more olefins can be contacted with one or more of these catalytic compositions to form oligomerization products and/or polymerization products.
Patent CA-2105162-A1 (CA)
Title: Dual chamber pacemaker system for delivering atrial sync pulses
Inventor: DEN DULK KAREL
IPC: A61N1/362
Filed: 1992-12-30
Abstract: A dual chamber pacemaker is provided, preferably either DDDR or DDIR, having logic hardware and/or software for normally carrying out the DDIR or DDDR mode of operation, and further having means for avoiding delivery of an atrial pace pulse in circumstances where normal atrial pacing could otherwise be competitive or result in loss of atrial capture. The pacemaker has means for detecting an atrial sense during PVARP, timing out a delay from the time of the early atrial sense, and inhibiting delivery of an atrial pulse during the delay. In a preferred embodiment, the ventricular rate, which may be established by a rate responsive sensor, is maintained, while atrial sync pulses are delivered whenever possible following an early atrial sense so as to provide synchronous pacing whenever that is consistent with safe atrial pacing and substantial regularity of the ventricular pacing.
Patent CA-2105290-A1 (CA)
Title: Truck for a rideable vehicle, such as a skateboard
Inventor: PRACAS VICTOR M
IPC: A63C17/00
Filed: 1992-02-28
Abstract: A skateboard truck (10) for a skateboard (100) having a pivotal member (12) which is arranged to be connected to the deck (102) of the skateboard. The pivotal member (12) carries the wheel assembly (13) of the truck (10). A locking mechanism (14) is also provided.      In a first (unlocked) mode of operation, the pivotal member (12) is able to pivot so that the truck (10) is movable in a to and fro manner.      This first mode of operation permits a rider to perform advanced manoeuvres using a skateboard (100). In a second (locked) mode of operation, the truck (10) is locked against such to and fro movement by the locking mechanism (14).
Patent CA-2105427-A1 (CA)
Title: Dye permeable polymer interlayers
Inventor: EIAN GILBERT L
IPC: G03C1/498
Filed: 1993-09-02
Abstract: ABSTRACT OF THE DISCLOSURE   Vinyl stearate-vinyl chloride copolymers and blends of polyvinyl stearate and polyvinyl chloride have been found to have good dye permeability. They have beenincorporated into photothermographic constructions as barrier interlayers and dye receiving layers.
Patent CA-2108211-A1 (CA)
Inventor: RECTON MARC J
IPC: A47J37/10
Filed: 1993-10-12
Abstract: "Casserole, notamment du type poêle à frire" Marc, Jean-Marie RECTON Casserole comportant un fond (1) délimité à sa périphérie par un rebord (2), casserole caractérisée en ce qu'elle comporte un plateau (4) disposé contre la face interne du fond de la casserole, des moyens (8, 9, 101) actionnés par un organe de commande (12, 19, 13) étant prévus entre le plateau et le fond pour écarter le plateau du fond. - Figure 1 jointe
Patent CA-2109306-A1 (CA)
Title: Flow line bake-out process for incinerator
Inventor: GROSS PAUL J
IPC: F23G7/06
Filed: 1992-05-11
Abstract: A method of cleaning flow structure within a regenerative fume incinerator (20) of the type having a plurality of heat exchange chambers (24,26,28) for directing fluid into and out of a combustion chamber (20). Each of the heat exchange chambers have a separate inlet (30) and outlet (32) line which are cyclically opened such that air to be cleaned is continuously being directed into the combustion chamber (20) through one of the chambers, and cleaned air is continuously directed out of the combustion chamber through an alternative one of the chambers. The flow structure, valves (34,36) and manifolds (38,40) may become clogged with residue from the air being combusted. An alternate inlet line (44) communicates from the source of fluid directly into the combustion chamber. That line is opened when cleaning of the flow structure is desired. At the same time flow to the normal inlet manifold is closed. The inlet and outlet valves continue to be cyclically opened and closed during cleaning such that the heated air from the combustion chamber is exposed to both those inlet and outlet lines, valves and manifolds. In a preferred embodiment, a normally closed lines connects the inlet and outlet manifold, and is opened during cleaning such that one relatively large outlet manifold is effectively formed by the entire flow structure, which would include the inlet and outlet manifolds, the inlet and outlet lines and their associated valves.
Patent CA-2111409-A1 (CA)
Inventor: NAKAMURA MAKIO
IPC: G10L19/08
Filed: 1993-12-14
Abstract: A  speech  encoder  synthesizes an  excitation sound  source in accordance with the  linear coupling of at least two predetermined basis vectors.    I        n realizing   the   codebook   search   by  using   signal processing  LSIs,  the  ordination of  the  first  cross correlation  Rm between an input speech  signal p(n) and plural  reproduced  signals  obtained  by  using plural basis vectors  is computed,  and the  ordination of  the second cross correlation  Dmj of  the plural  reproduced signals qm(n) is computed.         These     ordinations are arranged to be one ordination Rdmj.      By    using the ordination Rdmj  all possible  combinations of the third  and  fourth  cross  correlation calculations  are carried out to provide a most optimum codebook.      Consequently, the  number  of functions  to be  used  is decreased.
Patent CA-2114621-A1 (CA)
Title: Compounds having angiotensine ii antagonistic activity
Inventor: SALIMBENI ALDO
IPC: C07D239/54
Filed: 1992-08-03
Abstract: Compounds of formula (I), wherein R, R1, R2, R3, X and Z  groups have the meanings given in the specification and are endowed with AII antagonistic properties.
Patent CA-2116285-A1 (CA)
Title: Unsaturated polyurethanes, and the use thereof as reactive emulsifiers
Inventor: BRINDOEPKE GERHARD
IPC: C09K23/52
Filed: 1994-02-23
Abstract: Abstract of the Disclosure Unsaturated  polyurethanes, and  the  use  thereof  as reactive emulsifiers Unsaturated polyurethanes which contain from 20 to 80% by weight of polyethylene glycol units and can be prepared by reacting a)   at least one organic polyisocyanate, b)   an unsaturated fatty alcohol, a polyalkylene glycol ether  thereof  or  an  unsaturated  said  ester containing one hydroxyl group, c)   one or more diols which additionally contain at least one further hydroxyl group or carboxyl group and d)   a polyethylene glycol having a molecular weight in the region of 750 to 10,000, with maintenance of an NCO/OH equivalent ratio, based on all the starting components a) to d), of from 0.7:1 to 1.2:1.            These unsaturated polyurethanes are used as reactive emulsifiers  for  the  preparation  of  dispersions  of hydrophobic synthetic resins which can be cured by means of free radicals and/or oxidatively.
Patent CA-2120754-A1 (CA)
Title: A mousetrap
Inventor: HEILESEN JORGEN
IPC: A01M23/20
Filed: 1992-10-07
Abstract: A trap for mice or the like animal comprises a spring-loaded displacement member (17) supported by a frame (10) with an opening for the receiving of the head of the animal. The displacement member (17) is connected to the frame (10) by means of a securing line (27) extending within reach for the animal in the frame (10) inside the opening (22). The frame (10) is formed in one piece and comprises a front wall (12), in which the opening is placed and on the outside of which the displacement member (17) is arranged so as to be displaceable transverse to the opening (22). The displacement member (17) is spring-loaded by means of rubber bands (25 and 26) fastened to the frame (10) and protected on the front side of the front wall (12) by covering parts (15 and 16) formed integral with the frame. The frame (10) with the displacement member (17) is loosely placeable in a surrounding box with a closed rear wall, the opening (22) of the frame (10) facing an opening in the box.
Patent CA-2126142-A1 (CA)
Inventor: KAHN DAVID ALEXANDER
IPC: G06F3/023
Filed: 1994-06-17
Abstract: In an eye-directed communications device which displays characters, for example symbols or letters, and determines a user's selection by monitoring eye position to determine which of the characters is being observed, difficulties in providing for selection of the usual characters and functions of a conventional  101  key  computer  keyboard  are  overcome  by dividing the required characters/functions into three sets, designated as lower case, upper case and "command" case.  In order to select a particular character, the user first selects the case and then selects the character.  Only one set need be displayed to the user, the characters in the other sets having spatial correspondence with those in displayed set.          The system may also, or alternatively, display the characters in groups and define position selection fields corresponding to the positions of the characters in each group.  The user then determines the position of the desired character in its group and makes a character selection by first selecting the corresponding position field.   The apparatus then limits subsequent character selection by the user to the subset of characters in the corresponding positions in their groups.          Limitation to the subset allows subsequent detection of the selected character to use a larger area than that occupied by the character in the display.
Patent CA-2130327-A1 (CA)
Title: Weed remover
Inventor: PARK ROWLAND
IPC: A01M21/02
Filed: 1994-08-17
Abstract: With tools used in the past and present for removing individual dandelions or weeds it is necessary for the person to bend down to dig out the weed by hand and discard it, requiring several back breaking manouvers. In this invention it is only necessary for the person (operator) to push a cutting blade at the end of a long handle into the earth about two (2) inches in front of the weed and then squeeze the smaller inner handle upwards which results in the lower clamping arm securing the weed tightly against the cutting blade. The tool is then withdrawn from the earth with the weed intact and the end of the tool tapped lightly over a wheelbarrow or other container to dislodge the weed after releasing pressure at the small inner handle. As the operator becomes more familiar with the tool it is possible to collect several weeds before discarding them in the container.
Patent CA-2131553-A1 (CA)
Title: Use of alkylureas and hydroxyurea as contraceptive agents
Inventor: RUBINSTEIN ARYE
IPC: A61K31/17
Filed: 1993-03-05
Abstract: This invention is directed to the use of alkylureas, such as butylurea, ethylurea, propylurea or methylurea, and to the use of hydroxyurea as contraceptive agents. Alkylureas and/or hydroxyurea may be used either alone or with a pharmaceutically accept-able carrier, and may be used in conjunction with conventional contraceptive means to abrogate sperm motility.
Patent CA-2131605-A1 (CA)
Title: Undercoating of particle surfaces and direct coating method
Inventor: CHEN SHIN-YIH
IPC: G01N33/543
Filed: 1994-09-07
Abstract: ABSTRACT OF THE DISCLOSURE An intermediate for use in forming a reagent for analysis of biological solutions is provided comprising a solid phase and an undercoating of inert material covalently or absorptively coated onto the solid phase. Additionally, a reagent is provided in which a binding partner of a reactant to be captured in a test assay is coupled to theundercoating. The solid phase may comprise superparamagnetic particles typically having highly irregular surface structures including small pores which consume binding partner in traditional loading procedures. In the inventive reagent, undercoating fills such small pores and covers the solid phase surface, reducing non-specific binding and allowing tailored loading of binding partner onto the solid phase.
Patent CA-2133449-A1 (CA)
Title: Binary azeotropic compositions
Inventor: MERCHANT ABID N
IPC: C09K3/32
Filed: 1993-04-01
Abstract: Azeotropic or azeotrope-like compositions of effective amounts of 1,1,2,2,3,3,4,4-octofluorobutane and trans-1,2-dichloroethylene;  cis-1,2-dichloroethylene; or 1,1-dichloroethane to form an azeotropic or azeotrope-like composition are disclosed that are useful as cleaning agents, refrigerants, aerosol propellants, heat transfer media, gaseous dielectrics, fire extinguishing agents, expansion agents for polyolefins and polyurethanes and as power cycle working fluids.
Patent CA-2137102-A1 (CA)
Title: Method of making high nitrogen content steel
Inventor: WATKINS RICHARD R
IPC: C21C7/072
Filed: 1994-12-01
Abstract: A method of making stabilized ultra-low carbon steel having a high nitrogen content for enameling applications. The preferred method involves two phases. The first phase occurs in the basic oxygen furnace wherein nitrogen gas is combined with oxygen gas and blown into the melt through the oxygen lance. After the oxygen blow the carbon content of the melt is approximately 0.03%  and the nitrogen content is at least about 0.016 to 0.020%. In the second phase the melt is introduced to a vacuum circulation decarburizer where the carbon content of the steel is reduced to ultra low levels on the order of 0.005%. The nitrogen content is maintained at a level of at least about 0.01% by introducing nitrogen gas into the vacuum decarburization vessel as the lift gas through inert gas tuyeres.