baber/WOPTO huggingface dataset:
Patent CA-2101527-A1 (CA)
Inventor: LAROSA CHRISTOPHER P
IPC: H04L27/233
Filed: 1992-09-21
Abstract: La présente invention porte sur un dispositif de transposition de fréquences utilisé pour modifier la fréquence effective de l'information de phase d'un signal d'entrée (115). Celui-ci contient une première phase ( (t)) et une première fréquence (fi). La phase du signal d'entrée est extraite et est numérisée à une seconde fréquence (fo), ce qui donne un second signal de phase numérique de N bits (  (t))(311). Le dispositif de transposition de fréquences produit un troisième signal de phase numérique (319) qui correspond à proximativement à la différence entre  (t) et   (t), puis combine le deuxième et le troisième signal de phase numérique pour former un quatrième signal de phase numérique (307) essentiellement identique au premier signal de phase.
Patent CA-2105004-A1 (CA)
Inventor: BURLESON JOHN D
IPC: E21B43/1185
Filed: 1993-08-27
Abstract: A system is provided for selectively perforating multiple zones in a well an a single trip into the well. The system includes a tubing string which carries at least a first and a second perforating gun. At least a first and a second pressure actuated firing head are associated with the first and second perforating guns, respectively. A source of actuating fluid pressure for the firing head is provided, which may be the bore of the tubing string. A first selective communication device is provided for isolating the second firing head from the source of actuating fluid pressure until after the first perforating gun has been fired, and for then communicating the second firing head with the source of actuating fluid pressure in response to firing of the first perforating gun. The first firing head provides a time delay during which the actuating fluid pressure may be bled off prior to the firing of the first perforating gun.
Patent CA-2106937-A1 (CA)
Title: Method of manufacturing lamp interference-fit metallic bases
Inventor: SPAULDING DENNIS D
IPC: H01J5/60
Filed: 1993-09-24
Abstract: ABSTRACT       A method for manufacturing a lamp including a glass envelope having a base fitted at each end portion thereof.  Each lamp base includes a metallic base shell having an annular flange.  The annular flange is heated prior to fitting over the end portion of the envelope so as to increase the inner flange diameter.  Cooling of the annular flange after fitting reduces the flange diameter thereby providing an interference fit with the end portion.  The lamp base is retained on the end portion without the need for basing cement.  In order to accommodate variations in the diameter of the lamp seals, an annular rib is formed on the inner surface of the flange.  After cooling, the annular rib forms an interference fit with the lamp end portion.
Patent CA-2108097-A1 (CA)
Inventor: KOROTKY STEVEN K
IPC: H01S3/06
Filed: 1993-10-08
Abstract: An optical pulse generator for producing a soliton pulse train having a modulator which amplitude and phase modulates  an optical  frequency output  of a  continuous optical wave source.  The modulator is driven by first and second harmonically related continuous sinusoidal waves from first and second CW voltage sources and the generator includes a pulse compression means for producing at the output of the generator a soliton pulse train.
Patent CA-2108884-A1 (CA)
Title: A method and apparatus for metering oil for a two stroke cycle internal combustion engine
Inventor: HILL RAYMOND JOHN
IPC: F02M59/30
Filed: 1992-06-19
Abstract: A method of control of the supply of lubricating oil to a two stroke cycle internal combustion engine comprising supplying fuel to a fuel injector from a fuel reservoir having a fuel capacity greater than the maximum fuel requirement of the engine per cycle.  The fuel in the reservoir being maintained at a substantially steady pressure. Delivering oil to the engine by a positive displacement pump having a delivery capacity per pump cycle greater than the maximum oil requirement of the engine per cycle. The oil pump being activated in response to the consumption of fuel from the fuel reservoir to maintain a substantially uniform predetermined ratio between the fuel consumption rate and the oil delivery rate.
Patent CA-2111180-A1 (CA)
Inventor: BOARDMAN MARK D
IPC: B60C23/00
Filed: 1993-12-10
Abstract: A vehicle central tire inflation system (10), which checks and inflates/deflates tires of an automotive tractor and trailer, is provided with aprevention control (110) for preventing inflation/deflation operation of the system (10) when the tractor is disconnected from the trailer.
Patent CA-2112124-A1 (CA)
Title: Multi-plane dewatering fabric
Inventor: JACKSON GRAHAM W
IPC: D02H9/02
Filed: 1991-07-12
Abstract: A dewatering fabric for the press section of a paper making machine is described having improved dewatering characteristics, improved resistance to compaction, and enhanced ability to bridge cavities, such as grooves or holes, in press section rolls. The fabric includes at least two distinct layers of flattened monofilament warp yarns at a high fill factor, and at least one layer of weft yarns. Advantageously, the fabric is constructed to provide long exposed floats of one of the distinct layers of warp yarns on the paper side of the fabric. The fabric may be used alone, with a paper side batt, or with a batt on both sides.
Patent CA-2112190-A1 (CA)
Title: Process for Removing Nitrogen Oxides from Oxygen Rich Exhaust Gas
Inventor: MIURA HIROSHI
IPC: B01J29/072
Filed: 1993-12-22
Abstract: Nitrogen oxides are removed from an oxygen rich exhaust gas containing nitrogen oxides and hydrocarbons by bringing the oxygen rich exhaust gas into contact with a catalyst composed of phosphorus and at least one active metal contained in a zeolite having a molar ratio of SiO2/Al2O3 of at least 15.
Patent CA-2112695-A1 (CA)
Title: Catalyst and catalytic reduction
Inventor: KAPTEIJN FREEK
IPC: B01J23/30
Filed: 1992-07-17
Abstract: A catalyst for the selective reduction of nitric oxide NO in flue gas to nitrogen using ammonia NH3 comprises oxidatively heat treated manganese oxide loaded on a porous substrate of gamma-alumina or titania- or titania-/WO3-modified silica.
Patent CA-2113402-A1 (CA)
Title: Pressure Test and Bypass Valve with Rupture Disc
Inventor: RINGGENBERG PAUL D
IPC: E21B34/00
Filed: 1994-01-13
Abstract: A pressure test and bypass valve for use in well testing.      The apparatus comprises a housing defining a central opening therein and a mandrel slidably disposed in the central opening.      A ball valve allows fluid flow through the central opening when in an open position and prevents fluid flow therethrough when in a closed position. A sleeve valve allows communication between the central opening and a well annulus when in an open position and prevents communication between the central opening and the well annulus when in a closed position. The ball valve and sleeve valve are actuated substantially simultaneously in response to well annulus pressure. A rupture disc is ruptured due to differential pressure thereacross. This allows well annulus pressure to act across a differential area on the mandrel such that the mandrel is moved relative to the housing, thereby actuating the valves.
Patent CA-2114314-A1 (CA)
Title: Polymerization reactor
Inventor: MCDONALD MICHAEL F JR
IPC: B01F27/91
Filed: 1992-07-17
Abstract: A novel chemical reactor; one particularly useful for the production of polymers, especially elastomers such as butyl rubber. The reactor (10) contains (1) a two-tube pass system, constituted of an inner or center tube bundle (20) through which a mixture or slurry of polymerizable monomers and catalyst is passed in one direction, and recycled via an outer tube bundle (30) in the opposite direction in essentially even flow distribution (2), while the tubes of the center and outer tubular bundles are maintained within a jacketed section, or sections of the reactor into which a coolant, or refrigerant; is injected and vaporized to remove the heat of reaction. The coolant, or refrigerant, in heat exchange relationship with the tubes removes the exothermic heats of reaction from the polymerization mixture, and maintains the polymerization mixture at uniformly low temperature. An even flow circulation of the slurry which aids in maintaining uniform low temperature, is provided by the use of (3) a diffuser (60) and (4) mixed flow pumping system (40), with its impeller (43), by virtue of which an adequate pressure head of even pressure profile is developed across the entry sides of the center tubes (20) to maintain the even flow distribution within the two-tube pass system at high circulation rate. There is no vortex whirl at the exit of the impeller-diffuser assembly, and no cavitation bubbles as commonly associated with one-tube pass systems, which employ a central draft tube and axial flow pump. Improved mixing, high hydraulic efficiency, and higher production rates with low polymer fouling, are achieved.
Patent CA-2114807-A1 (CA)
Title: Power Transmission and Planetary Gear Drive System
Inventor: VOGT KURT E
IPC: F16H3/14
Filed: 1994-02-02
Abstract: A pivotable actuator for changing the condition of a mechanical power transmission system between neutral, engaged and disengaged states.  The transmission system comprises rotary shafts each having a clutch mechanism and a clutch actuator for engaging and disengaging the clutch mechanism.  A bearing device disposed about the shafts is moved by a shift mechanism to drive the clutch actuator between the different states.  In an alternative embodiment relating to an aligned shaft drive system, the clutch actuator shifts a gear drive system from an engaged condition to a neutral condition and then to a braked condition.
Patent CA-2119297-A1 (CA)
Title: Transmission/reception circuit in a passive optical telecommunication system
Inventor: BOLZE THOMAS
IPC: H04B10/25
Filed: 1994-03-17
Abstract: ABSTRACT OF THE DISCLOSURE     In a passive optical telecommunication system wherein a plurality of decentralized stations are respectively connected via their own respective light waveguide subscriber line to an optical brancher that is connected, in turn, directly or via at least one further optical brancher to a common light waveguide terminal of the central station via a light waveguide bus, the decentralized station and the centralized station each transmitting and receiving optical digital signals in common-frequency operation, a transmission/reception circuit at each decentralized station is provided to avoid a degradation of the reception sensitivity of the central station corresponding to the bit pattern of its transmitted signal. This transmission/reception circuit includes a reception signal inverter connected between the output of the opto-electrical transducer and the input of the electro-optical transducer, and an optical delay line whose delay time is matched to the operating time of the electrical reception signal invertor is inserted between the output of the electro-optical transducer and the light waveguide subscriber line. The transmission/reception circuit maintains the sum of the received signal, and the part thereof which is unavoidably reflected, at a constant level.
Patent CA-2119637-A1 (CA)
Title: Arrangement for preventing contact corrosion in magnesium wheels
Inventor: MAIWORM FRIEDHELM
IPC: C23F15/00
Filed: 1993-08-18
Abstract: Abstract To prevent contact corrosion when a magnesium wheel is fixed to the wheel mount of a motor vehicle, an arrangement is provided in which, according to the invention, an annular aluminium washer (10) is inserted between the inner contact face of the magnesium wheel (1) and the wheel mount (6) in the region of the fixing bores (17), and as a central centring means an annular plastics adapter (11) is squeezed into the hub bore (8) of the magnesium wheel (1) in order to cover the radially inner circumferential face (20) of the washer (10) and to centre same (Fig. 1).
Patent CA-2119994-A1 (CA)
Inventor: WILYMAN PETER R
IPC: F25D3/11
Filed: 1994-03-25
Abstract: ABSTRACT       ROTARY TUNNEL FREEZER      A rotary tunnel freezer comprises a drum which is rotatable about its longitudinal axis. In use, liquid nitrogen is introduced into the drum through a spray header. Heat transfer throughout the drum is enhanced by further nozzles positioned at 500mm centres along the drum. The nozzles are positioned to eject gaseous or liquid nitrogen substantially tangentially to the drum a few centimetres from its inner surface. The nitrogen leaving the nozzles vigorously stirs the atmosphere in the drum and significantly enhances heat transfer there-by increasing the maximum production rate of existing rotary tunnel freezers or allowing shorter, and less costly, rotary tunnel freezers to be used for a given duty.
Patent CA-2121379-A1 (CA)
Title: Line trigger device for use with a downrigger
Inventor: KEISALA TEUVO
IPC: A01K91/08
Filed: 1994-04-15
Abstract: ABSTRACT OF THE DISCLOSURE    A device for linking a trolling line to a wire of a downrigger or a sideplanar so that a triggering force from the direction of the lure attached to one end of the trolling line is freely adjustable without affecting the coupling adjustment between the rod and the device, and between the device and the wire.   The device can be released from the cable by a sharp pull from the direction of the rod, and then reeled up to the surface and to the boat.
Patent CA-2123784-A1 (CA)
Inventor: WESTERMAN G WAYNE
IPC: E21B47/00
Filed: 1992-12-24
Abstract: New apparatus and methods are disclosed for controlling the operation of a rod-pumped oil well (shown generally in Fig. 1).  The load on (30, 32, 62, 100, 108) and position of (40, 48, 50, 64, 102, 108) the rod string (4, 8) are measured, an integration calculation (116) related to the work done during a portion of the downstroke (97, 98) is performed, and the result is compared (110) to a reference value (120), to detect a pumped-off condition in the well.
Patent CA-2125055-A1 (CA)
Inventor: GUSMANO DONALD J
IPC: H04N1/19
Filed: 1994-06-03
Abstract: The present invention is directed to a system and method for compensating for offset and gain drift in a fast scan direction during an image forming process. To achieve compensation, the present invention samples a plurality of permanently darkened pixels upon powering up image sensors and circuitry therefor and during a sub-scanning process of an image and feeds this information into an offset value generating circuit.      The offset generating circuit continually adjusts a pixel offset voltage aecording to a difference between sequential samples of the permanently darkened pixel, thereby compensating for fast scan offset drift. The present invention also samples a plurality of active pixels during a scanning of a calibration strip. From this scan, a gain corrective value is calculated.      The present invention then samples active pixels during a scanning of a platen background. In response to this sampling, the gain corrective value is continually adjusted according to a difference between sequential samples of the platen background, thereby compensating for fast scan gain drift. The present invention can also compensate and balance transfer functions for a plurality of eommunication channels in a multi-channel system by using the same target values and same reference signals for each channel.
Patent CA-2129401-A1 (CA)
Title: Split stud ring anchoring device
Inventor: MCKAY ALBERT A
IPC: F16B35/04
Filed: 1994-08-03
Abstract: A fastener assembly for installing valve devices and the like on one side of a mounting plate by bolts were the bolt holes are without threads and the opposite side of the mounting face is inaccessible for holding a bolt head or nut from turning.  The fastener assembly includes at least one fastener plate and a minimum of two threaded bolts affixed thereto, so that the threaded portion of the bolts affixed thereto, so that the threaded portion of the bolts projects through bolt holes in the mounting plate.  The at least one fastener plate may be a split ring.  A retaining washer is threaded onto the projecting bolt threads to retain the fastener plate in place while the valve device is being installed onto the projecting bolt threads on which lock nuts are subsequently screwed to secure the installation.  Tightening of the lock nuts without consequent rotation of the fastener plate bolts is achieved by reason of the torque imparted to one bolt being transferred via the fastener plate to the other bolt thereof, which is constrained from moving in an arcuate path by the hole in which it is disposed to thereby prevent rotation of the one bolt as the nut is screwed down.
Patent CA-2130292-A1 (CA)
Title: Rock crusher
Inventor: LEBLOND MICHEL
IPC: B02C13/20
Filed: 1994-08-17
Abstract: A rock crusher comprises a pair of rotors spaced apart to define a throat therebetween and driven in opposite directions.      Impactor bars on the rotors crush rock that is delivered to the rotors and passes the broken rock fragments through the throat.      The rock crusher may be conveniently provided in a harvesting vehicle such as a potato harvester to crush rock that has been picked up with and separated from the crop. The rocks can be crushed to a sufficiently small size that they may be conveniently returned to the field surface, and thus the arrangement avoids the trouble and expense that would otherwise be entailed in collecting and disposing of the separated rock.
Patent CA-2130977-A1 (CA)
Title: Configuration and ram/rom control of pci extension card residing on mca adapter card
Inventor: PADGETT RUSSELL S
IPC: G06F12/06
Filed: 1994-08-26
Abstract: Method and apparatus for enabling configuration of a PCI daughter card residing on an MCA adapter card using MCA setup cycles and signals and for ensuring the allocation of memory  space  to  the  daughter  card.    In  a  preferred embodiment,  the invention comprises an MCA adapter card connected to an MCA system bus of a conventional PC.   A PCI-compliant daughter card,  the purpose of which is to provide additional functionality to circuitry of the adapter card, resides on a PCI bus of the adapter card.  A PCI/MCA bridge is provided for interfacing the MCA system bus with the PCI bus of the adapter card for enabling configuration of the daughter card during the setup sequence of the MCA bus and to respond with an appropriate ROM signature during DOS boot-up to ensure that memory space will be allocated to the daughter card, if needed.  A first set of XPOS registers of the adapter card are used selectively to enable the bridge  and  to  a]low  the  PCI  configuration  space,  or registers,  of the daughter card and other PCI-compliant devices on the daughter card to be selectively accessed and initialized.   Certain registers of a second set of XPOS registers are used to set the data flow mode of the bridge and to respond with the correct ROM signature at DOS boot-up of the PC.  The remaining ones of the second set of XPOS registers are used selectively to enable and to store the size and location of any necessary RAM and/or ROM apertures of  the  daughter  card,  thereby  enabling  the  bridge  to initiate a PCI operation to the daughter card if it decodes an address within either of the apertures.
Patent CA-2132715-A1 (CA)
Title: Temperature operated switch construction and method of making the same
Inventor: BUCKSHAW THOMAS M
IPC: H01H36/00
Filed: 1993-03-31
Abstract: A temperature operated switch construction, the switch construction (20A) comprising a housing (21A), a movable switch arm (30A) carried in the housing, a temperature actuated unit (44A) disposed in the housing (21A) and being operatively interconnected to the switch arm (30A) to cause movement of the arm between operating positions thereof in relation to the temperature being sensed by the temperature actuated unit (44A), the housing (21A) carrying a switch unit (32A) that is operatively associated with the switch arm (30A) the switch unit (32A) comprising a reed switch (68) and the switch arm (30A) carrying a magnet (65) for operating the reed switch (68) to the conditions thereof as the switch arm (30A) is moved to the positions thereof, the switch arm carrying two springs (97, 98) for respectively engaging the housing (21A) when the switch arm (30A) is in the different operating positions thereof.
Patent CA-2134127-A1 (CA)
Title: Device and Method to Separate Components in Mixtures of Non-Miscible Liquids
Inventor: TORINI ALBERTO
IPC: B01D17/022
Filed: 1993-04-30
Abstract: The present invention concerns a device (1) to separate two components of a mixture (11) of non-miscible liquids, especially water or salt water and oils.  Said device (1) consists of a hollow body (2), having an inlet port (4) to feed the mixture (11) and outlet ports (5, 6) to discharge the separated components, and a filter (7) formed of a loosely packed hydrophilic material (8) in fibers, and positioned between said inlet port (4) and the outlet port (5) of the separated water.  Said filter (7) when soaked with clean water, lets through only the water component of said mixture (11), while the oil component is repelled therefrom. The present invention also concerns a method to separate the components of a mixture of non-miscible liquids, making use of the device specified heretofore.
Patent CA-2138407-A1 (CA)
Title: Radiation emitting ceramic materials, devices containing same, and methods of use thereof
Inventor: RAKHIMOV ROUSTAM K
IPC: H05B3/14
Filed: 1993-06-16
Abstract: The disclosed invention is directed to novel ceramic compositions, and to stabilizer compositions for use with those ceramic compositions. The ceramic materials are formed of rare earth chromium oxides that include a novel combination of stabilizing compounds.  The invention also relates to the use of the presently disclosed ceramic compositions in devices (10, 100) for drying or fast and effective sterilization of various articles, and to methods for treating a material with infra-red radiation which is generated from such ceramics (180, 260, 270) to preserve at least one property of the material.
Patent CA-2139053-A1 (CA)
Title: Power controller with switched power outlets
Inventor: MESSENGER STEVEN
IPC: H02J11/00
Filed: 1994-12-23
Abstract: An AC power controller suitable for use with computer systems has a master power outlet and several slave power outlets that supply an AC linevoltage. The master outlet makes the AC line voltage continually available. The slave outlets are enabled when current drawn from the master outlet exceeds a turn-on threshold and disabled when the current drops below a lower turn-off threshold. If a computer is plugged into the master outlet and peripherals into the slave outlets, the peripherals turn on and off in response to the operating state of the computer. An adapter that modulates its own operating current may be plugged into the master outlet and components of a computer system into the slave outlets. The adapter can be configured to sense an incoming telephone call, power up the computer system to respond, and shut down the system once the call is handled. The adapter can alternatively be configured to sense attempts to communicate with a peripheral plugged into a slave outlet and power up the peripheral as required.
Patent CA-2142596-A1 (CA)
Inventor: HECK ROLAND H
IPC: C10B57/06
Filed: 1993-08-27
Abstract: 2142596 9406888 PCTABS00030 A delayed coking process comprising introducing a residuum hydrocarbon fraction to a coker heater (15a) and adding spent caustic through lead line (40) directly to the heated coker feed in the coke drum (16).
Patent CA-2144720-A1 (CA)
Inventor: QUATTROCIOCCHI LUCIANO
IPC: E04B1/26
Filed: 1995-03-15
Abstract: A bendable metal stamping has upstanding arms adapted to overlie the narrow dimension of a wooden stringer in use as a bottom plate of a building frame. The stamping has legs extendable toward the perimeter of the building  and are attached to the floor.          The stamping is bendable along a line parallel to the bottom edge of the inner one of the arms and the inner edge of the legs.