baber/WOPTO huggingface dataset:
Patent CA-2025439-A1 (CA)
Title: Internal cache microprocessor slowdown circuit with minimal system latency
Inventor: HAMID MUSTAFA A
IPC: G06F12/08
Filed: 1990-09-14
Abstract: ABSTRACT      A method for slowing down a high speed microprocessor with an internal cache to maintain compatibility with applications  software  written  for  slower  speed microprocessors.  The internal cache of the processor is invalidated during the slowdown and the cache address comparison circuitry is directed to evaluate external addresses for a preset interval, preventing the processor from accessing the cache,  thereby slowing down the processor.  The external address evaluation direction is released when a bus requesting device indicates a bus request during the slowdown, allowing the processor to respond to the bus request promptly to prevent possible latency problems from occurring, but still maintaining the. processor in a halted state.
Patent CA-2026525-A1 (CA)
IPC: F28F3/06
Filed: 1990-09-28
Abstract: ABSTRACT OF THE DISCLOSURE          A heat transfer element assembly (30) is comprised of a plurality of first and second profiled heat transfer plates (32,34) which incorporate a series of first and second single-lobed outwardly protruding notches (40,50) which extend obliquely relative to the general direction of fluid flow through the assembled plates.  The first and second profiled heat transfer plates (32,34) are assembled alternately in juxtaposed relationship in a stacked array with the obliquely extending spacing notches (40,50) of neighboring plates crossing each other.  The first and second profiled heat transfer plates are provided with a plurality of first single-lobed notches (40) protruding outwardly from one side of the plate and a plurality of second single-lobed notches (50) protruding outwardly from the other side of the plate.  The first and second single-lobed notches are arranged in staggered relationship with one or more second single-lobed notches (50) disposed between each pair of first single-lobed notches (40).
Patent CA-2027969-A1 (CA)
Title: Drill tube
Inventor: CHAPMAN BRUCE G
IPC: E21B17/00
Filed: 1990-10-18
Abstract: Abstract A method of manufacturing a drill tube (10) for drilling operations, involving centrifugally casting a plurality of tube lengths (11) and welding the tube lengths together to form welds (12), whereafter threaded end fittings (13, 15) are welded to form welds (14, 16) at opposite ends of the drill tube.  Alternatively the threaded end fittings are partially formed during centrifugal casting of the tube lengths to form the ends of the drill tube and completed by appropriate machining and thread forming operations.
Patent CA-2028509-A1 (CA)
Title: Method for using foams to improve alkaline flooding oil recovery
Inventor: HURD BILLY G
IPC: C09K8/94
Filed: 1990-10-25
Abstract: A B S T R A C T             METHOD FOR USING FOAMS TO IMPROVE  ALKALINE FLOODING OIL RECOVERY         An alkaline flooding oil recovery process is enhanced by injection of aqueous solutions of foam-forming surfactant and gases, or pre-formed foams, either ahead of or behind conventional alkaline slugs.  In a preferred embodiment, a slug of an aqueous solution containing an alkaline agent followed by a driving fluid is injected into the formation that displaces oil through the relative high permeability zones of the formation and oil is recovered via the production well. Thereafter, a slug of an aqueous solution of a foam-forming surfactant is coinjected into the formation with a gas creating a foam when the gas mixes with the foam-forming surfactant in the aqueous solution.   The foam created from the aqueous surfactant and gas will go preferentially into the formation zones of relatively high permeability and low oil saturation substantially plugging these zones. Thereafter, a slug of an aqueous solution containing an alkaline agent is injected followed by a driving fluid that displaces the aqueous solution containing an alkaline agent and oil through the less permeable zones of the formation toward the production well and oil is recovered from the formation via the production well.  This process improves volumetric sweep efficiency and/or reduces effective mobility ratio of released oil and displacing fluids thereby enhancing displacement of oil to the production well and total oil recovery.
Patent CA-2030331-A1 (CA)
Inventor: FUJII YOSHIHARU
IPC: B41J13/00
Filed: 1990-11-20
Abstract: An image processing device prints a maximum possible number of frames of an original image on one or more printing materials. A CPU develops the frame and printing material information stored in the memory area so that a maximum number of possible frames can be placed within the printing material by selecting the layout and magnifying/reducing the frames. By switching the alternative print material according to a previously determined priority, the printing operation is continued without any interruption, even if the printing material initially selected runs out during the printing. The boundaries between frames are drawn by lines for convenience to separate each frame after printing.
Patent CA-2031107-A1 (CA)
Title: Film cassette
Inventor: NIEDOSPIAL JOHN J
IPC: G03B17/30
Filed: 1990-11-29
Abstract: In a film cassette, a spool core is supported for rotation in an unwinding direction to thrust a leader section of a filmstrip coiled about the spool core through a film passageway to the exterior of the cassette.  A pair of flanges are arranged in spaced relation along the spool core to overlie opposite longitudinal edges of the filmstrip to radially confine the filmstrip.  The flanges are adapted to permit the longitudinal film edges to force the flanges farther apart to allow the filmstrip to escape the confinement of the flanges to permit the leader section to the thrust outside the cassette.  According to the invention, the leader section is relieved to permit its forward edge to be thrust clear of a light-trapping means in the film passageway before the longitudinal film edges begin to force the flanges apart, whereby when the spool core is rotated in the unwinding direction any resistance the light-trapping means and the flanges present to film movement is more easily overcome.
Patent CA-2033827-A1 (CA)
Inventor: FRASER MICHAEL J
IPC: B23B41/00
Filed: 1991-01-09
Abstract: ABSTRACT   A method of and apparatus for forming a through bore or recess in a turbine blade (14), for a lacing wire hole for example, includes a machine (62) capable of approaching the area to be machined in a first direction during which an initial machining operation may take place and them moving in a second direction completing the machining operation. Support means (36,38,41,75) are provided to ensure the blade (14) is held firmly. The method and apparatus permit of accurate machining of blades when they are in an array of blades still secured to the rotor.
Patent CA-2035113-A1 (CA)
Title: Superconducting lead protected against partial transitions
Inventor: VERHAEGE THIERRY
IPC: H01L39/14
Filed: 1991-01-28
Abstract: Superconducting conductor protected from partial transitions, comprising superconducting strands (1) around at least one non-superconducting central strand (10), or around at least one non-superconducting central core electrically insulated from the said superconducting strands, characterised in that at least in the region of the two ends of the said conductor, the said central strand, or the said central core, is connected electrically to the said superconducting strands, and that the said central strand (1), or the said central core, is composed of at least one filament (12) of a non-superconducting metal, whose resistivity at 4.2 K is less than 10<-9>  OMEGA .m, embedded in a metal alloy matrix (11) whose resistivity at this temperature is greater than 10<-8>  OMEGA .m. 
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Patent CA-2036641-A1 (CA)
Title: High modulus polymeric composition
Inventor: CALLANDER DOUGLAS D
IPC: C08G63/78
Filed: 1991-02-19
Abstract: Abstract of the Disclosure HIGH MODULUS POLYMERIC COMPOSITION     The present invention discloses a process for preparing polymeric compositions which exhibit high modulus and high impact strength.  The techniques of this invention can be utilized to improve the modulus and impact strength of virtually any type of thermoplastic resin or thermosetting resin.  The subject invention specifically relates to a process for preparing a high modulus polymeric composition which comprises:  (1) polymerizing at least one diacid or diacid halide with at least one member selected from the group consisting of diols and diamines in a solution of a thermoplastic resin or thermosetting resin under conditions which result in the formation of a solution of the thermoplastic resin or thermosetting resin having a polyester or a polyamide dispersed therein; and (2) recovering the high modulus polymeric composition from the solution.  It is often desirable for the polyester or polyamide to be a liquid crystalline polyester or a liquid crystalline polyamide.  It is also generally desirable for the high modulus polymeric composition to be prepared by interfacial polymerization.  It is also possible to prepare polyamides or polyesters by polymerizing amino aromatic acids or hydroxy aromatic acids by a direct polycondensation reaction in the solution of a thermoplastic resin or thermosetting resin.
Patent CA-2037521-A1 (CA)
Title: Substrate composition and method for solid phase urease immunoassay
Inventor: STEWART THOMAS N
IPC: G01N33/535
Filed: 1991-03-04
Abstract: SUBSTRATE COMPOSITION AND METHOD FOR   SOLID PHASE UREASE IMMUNOASSAY                 ABSTRACT OF THE DISCLOSURE       A  method  for  enzyme  immunoassay  of  a  ligand includes urease as a label.  A bound fraction of ligand and  antiligand  conjugated  to  urease  is  formed on a solid  support.   The  urease  component  of  the  bound fraction is contacted with a substrate composition for urease which includes a compound converted to ammonia by the urease,  a tetrazolium salt and a pH dependent reducing agent which reduces the tetrazolium salt when the  pH  of the  assay medium has  been  raised by the ammonia.  The tetrazolium salt is reduced to a colored insoluble formazan which precipitates as a detectable spot  on  the  support.   The  invention  includes  the substrate  composition  and  a kit  of  materials  for performing the assay.
Patent CA-2038140-A1 (CA)
Title: Occupant restraint system
Inventor: MILLER GREGORY A
IPC: B60R21/26
Filed: 1991-03-13
Abstract: OCCUPANT RESTRAINT SYSTEM Abstract of the Disclosure An occupant restraint system includes a folded cushion having upper and lower wall portions, fan folded side wall portions and pleat folded end wall portions. A reaction plate fits between the upper wall portion and the immediately adjacent distal folds of the side wall portions. The distal folds are clamped to the reaction plate so that initial deployment of the cushion is laterally of the upper wall portion which remains stationary. As the pressure and volume increase, the distal folds are pulled away from the clamping member and form continuations of the upper wall which deploys toward the occupant.
Patent CA-2039511-A1 (CA)
Title: Inlet air flow control for centrifugal fans
Inventor: RATNER DAVID A
IPC: F04D27/00
Filed: 1991-04-02
Abstract: INLET AIR FLOW CONTROL FOR CENTRIFUGAL FANS          ABSTRACT OF THE DISCLOSURE        An actuator and associated linkage assembly combined to multiply the force applied by the actuator in moving a flow control disk of a centrifugal fan against the air pressure generated by the fan.  The actuator includes an internal spring mechanism for closing the disk against the fan air pressure.  For some applications the closing force provided by the return spring may be supplemented with an auxiliary spring mechanism that is mounted for providing maximum assistance in closing the control disk, yet not prohibiting the actuator from re-opening the disk.
Patent CA-2045512-A1 (CA)
Title: Data recording method and data reproducing apparatus
Inventor: SAKO YOICHIRO
IPC: G11B27/34
Filed: 1991-01-18
Abstract: The present invention provides a recording method and a reproducing method for compressed data which are continuous data compressed in time.  The methods may be applied advantageously to data  recording and  reproduction on or from a disc-shaped recording medium.  Data recording is performed in such a manner that a predetermined amount of compressed data stored in a memory are read out continuously and recorded on a recording medium, and recording on the recording medium is discontinued during the time which elapses since recording of the predetermined amount of the compressed data until storage in and readout from the memory of a new predetermined amount of the compressed data.  On the other hand, data  reproduction  is performed  in such  a manner that readout of the compressed data from the  recording medium  is discontinued during the time which elapses since a predetermined amount of the compressed data is read out from the recording medium on which data compressed in time are recorded until data expanded in time are read out.
Patent CA-2046225-A1 (CA)
Title: Segmented absorbable copolymer
Inventor: JARRETT PETER K
IPC: A61K9/16
Filed: 1991-07-04
Abstract: A copolymer comprising a bioabsorbable, segmented molecular architecture has been invented.      The copolymer has at least two different ester linkages. The segmented molecular architecture comprises a plurality of fast transesterifying linkages. The fast transesterifying linkages have a segment length distribution of greater than 1.3. The segmented molecular architecture also comprises a plurality of slow transesterifying linkages. The copolymer is useful as an article of manufacture, for example a molding resin, surgical element and controlled release device.
Patent CA-2049582-A1 (CA)
Title: Frequency synthesizer with a phase-locked loop with multiple fractional division
Inventor: GINESTET THIERRY
IPC: H03K23/66
Filed: 1991-08-20
Abstract: A frequency synthesizer comprises a single phase-locked loop controlled by a reference clock formed by a voltage-controlled oscillator, a programmable divider with variable division rank M, a phase detector, and a loop filter. It also comprises a predetermined number n of fractional division structures, each implementing a frequency step P i x F ref lower than the reference frequency F ref. Each fractional structure is coupled in parallel with said programmable divider to add to said division rank M fractional increments P i such that the ratio between the frequency F vco provided by said oscillator and said reference frequency be defined as a function of said increments P i by the relationship :       (see fig. I) Application : any type of product or system requiring a frequency synthesizer, in particular communications system with frequency agility.
Patent CA-2052202-A1 (CA)
Inventor: NENNIGER JOHN
IPC: E21B36/04
Filed: 1991-09-25
Abstract: This  invention describes  a method  of  stimulating production from an oil well by removing solid wax deposits from a production zone.  An electrical resistance heater comprised of a packed bed of spherical heating elements is lowered through the tubing on a wireline and placed adjacent to the perforations. Solvent is pumped through the heater to raise its temperature by 200 °C and then into the formation to contact wax deposits. The solid wax deposits are liquified and together with the oil and the solvent form a single liquid phase.  The wax is then removed from the formation by placing the well back on production. Because the invention completely avoids the use of either water or gas,  the saturation of the water and gas phases in the formation is minimized, thereby maximizing the mobility of the liquid phase containing the wax and facilitating the removal of the  liquified  wax  from  the  treatment  area  before  it reprecipitates.  The packed bed heater has a large surface area and a large heat transfer coefficient, so high power rates (150 kw) can be achieved within a compact volume (6m long x 5cm id) without solvent degradation.  By heating the solvent to a high temperature, a minimum volume of solvent is required, thereby minimizing production downtime and solvent costs. The burnout and catastrophic failure problem usually associated with resistive heaters is avoided due to the multiplicity of current paths through the packed bed.
Patent CA-2053097-A1 (CA)
Inventor: HITACHI HIDEKI
IPC: H01H50/04
Filed: 1991-10-11
Abstract: An electromagnetic relay of a flat configuration which can switch electric contacts by producing a seesaw movement of an armature.  The relay has an armature assembly having movable contacts, a coil assembly implemented as a coil spool having a core and wound with a coil, and an insulating base supporting stationary contacts, coil terminals, and connection terminals.  The coil assembly is built in the base by affixing the internal coil terminals of the coil assembly to the external coil terminals of the base, and then the base is molded to cover the whole coil assembly except for both ends of the core and a bore for receiving a permanent magnet.          The base, therefore, fully spaces apart the joints of the coil terminals and the contacts and spaces apart the coil and the contacts.
Patent CA-2054173-A1 (CA)
Inventor: ICHIHARA MASAKI
IPC: H04L25/03
Filed: 1991-10-24
Abstract: In a digital radio receiver, an amplitude limiter circuit is included for producing a constant-amplitude IF signal from a received digitally-modulated IF signal.  An orthogonal detector orthogonally mixes the constant-amplitude signal with a reference carrier and produces an in-phase baseband signal and a quadrature-phase baseband signal.  The baseband signals are converted to first and second digital signals and supplied to respective multipliers.   A logarithmic detector circuit is coupled to the amplitude  limiter  for generating a  signal representative of the amplitude of the received IF signal.  The logarithmic scale of the amplitude signal is converted to linear scale by a logarithmic-to-linear converter circuit and supplied to the multipliers in which it is multiplied with the digital baseband signals.  The outputs of the multipliers are coupled to an equalizer for eliminating bit errors.  The outputs of the equalizer are then directed to the demodulator for recovering the modulating signal.
Patent CA-2057722-A1 (CA)
Title: Friction shoe for railcar truck
Inventor: MCKEOWN FRANKLIN S JR
IPC: B61F5/12
Filed: 1991-12-16
Abstract: The present invention provides a friction shoe for use in a railway freight car truck.  The friction shoe is disposed to dampen movements between the truck bolster and the side frames, and consists of a unitarily cast metal body having a generally planar vertical wear plate adapted to frictionally engage a column on the truck side frame.  The back surface of the vertical wear plate is augmented to create a thicker cross sectional area at either the upper or lower ends of the plate, depending on the type of shoe being used.  The augmented shoe provides a longer wearing friction surface which requires less frequent replacement and lower costs.
Patent CA-2058591-A1 (CA)
Inventor: CASTLE JONATHAN
IPC: G01R31/02
Filed: 1991-12-30
Abstract: A microprocessor-controlled remote resistance measurement system is disclosed wherein the connection leads to the three- or four-wire resistance temperature devices (RTDs) are multiplexed via a four-channel analog multiplexer at the input of the unit. A separate two-channel multiplexer is also used to multiplex a fifth input for measurement of a reference resistor. The output of the multiplexer is coupled to a voltage-to-frequency converter, wherein the frequency output is utilized as an input to the microprocessor-based controller. The microcontroller can check for broken wires by addressing the multiplexers to individually isolate any of the connecting wires to the remote RTD sensors. The output of the multiplexer is monitored in a Test Mode by connecting a known impedance to the multiplexer output to determine if any RTD connections are defective. If one of the voltage sensing wires is faulty, the known impedance will cause an erroneous frequency reading into the microcontroller, which will then provide an indication on the display for determining exactly which RTD wire is broken. Only two address lines are used to control the five multiplexer channels through the use of a function selector circuit and a two-stage measurement cycle.
Patent CA-2061520-A1 (CA)
Title: Delivery system for enhanced onset and increased potency
Inventor: DAHER LAWRENCE J
IPC: A61K9/00
Filed: 1992-02-19
Abstract: The invention discloses a swallow tablet which is capable of disintegrating within less than about fifteen minutes and providing fast delivery of therapeutic drugs. The delivery system is composed of between 0.250 and 1.0 Gm of an alkali metal or alkaline-earth metal salt of an edible organic acid.      A preferred delivery system is trisodium citrate.
Patent CA-2062386-A1 (CA)
Inventor: WENZEL REINHARD
IPC: F16C13/00
Filed: 1992-03-05
Abstract: A controlled deflection roll for use in calenders and like machines has a non-rotatable carrier for a hollow cylindrical shell the end portions of which are rotatable on bearings and the central portion of which surrounds hydraulically operated shell deforming elements. A first hydraulic circuit is provided to supply heated oil to the deforming elements, and a second hydraulic circuit serves to feed lubricant to the bearings. The two circuits are separated from each other by thermal barriers which are installed between the shell and the carrier intermediate the deforming elements and the bearings. Valves and/or flow restrictors are provided in the second circuit to vary the rate of feed of lubricant to and/or the flow of lubricant from the bearings. This renders it possible to establish a desired temperature profile along the full length of the peripheral surface of the shell.
Patent CA-2064539-A1 (CA)
Title: Internal release agents, active hydrogen containing mixtures which contain such agents and the use thereof in a process for the production of molded products
Inventor: MAFOTI ROBSON
IPC: C08L75/00
Filed: 1992-03-31
Abstract: Mo-3591 NOVEL INTERNAL RELEASE AGENTS, ACTIVE HYDROGEN CONTAINING MIXTURES WHICH CONTAIN SUCH AGENTS AND THE USE THEREOF IN h PROCESS     FOR THE PRODUCTION OF MOLDED PRODUCTS                 ABSTRACT OF THE DISCLOSURE         The present invention is directed to a novel internal release agent, a mixture of isocyanate reactive materials containing the release agent and a RIM process using the release agent.  The novel release agent is a reaction product of 1) a polyester prepared by reacting (a) a polymerized fatty acid with (b) a relatively low molecular weight hydroxy group containing compound, and 2) a saturated monocarboxylic acid.