baber/WOPTO huggingface dataset:
Patent GB-897396-A (GB)
IPC: C10B43/10
Abstract: 897,396. Cleaning tubes. BRITISH PETROLEUM CO. Ltd., and MARTIN, R. J. Sept. 30, 1960 [Oct. 21, 1959], No. 35682/59. Class 99(2). Combustible material is removed from tubes of heat exchangers by controlling the oxidation of the combustible material at a temperature not exceeding 350‹C. in the presence of a stream of an oxygen-containing gas, e.g. air, but in the absence of any combustible material other than that to be removed or of the products of combustion of such material. The oxidation temperature is controlled by removing the heat of combustion partly in the exit gases and partly by passing a suitable medium through the side of the exchanger which is not being cleaned. Steam may be introduced with the oxygen-containing gas in the early stages of oxidation to produce an end otherwise water-gas reaction which will remove any localised hot spots that may develop. In cleaning a hot-oil/furfural-extract heater furfural is first circulated to remove the oily deposits in the tubes which are then steamed out to atmosphere. Compressed air is then introduced in the tubes with a small quantity of steam and the combustion gases exhausted to atmosphere, hot gas-oil being circulated on the outside of the tubes to control the combustion temperature.
Patent GB-2226447-A (GB)
Title: An infrared ray detector
Inventor: YOSHIDA YASUAKI
IPC: G01J5/28
Filed: 1990-01-09
Abstract: An infrared ray detector includes an infrared detection element (15) fabricated in a wafer which is produced by growing a semiconductor responsive to infrared on a high resistance substrate, a metal submount (16) provided with two lead terminals (20) insulated from each other, to which submount the infrared ray detection element is soldered and an adiabatic vacuum vessel (23) for containing and cooling the infrared detection element, to which vessel the metal submount is soldered. <IMAGE>
Patent GB-2245181-A (GB)
Title: Trolley ball game vehicle
Inventor: LONG CHRISTOPHER BARRY
IPC: A61G5/00
Filed: 1990-02-19
Abstract: A trolley is designed to permit a player to take up a prone position face down on the vehicle. The upper surface of the trolley board is contoured to accept average body shape and the rear of the trolley contains a fin C which is designed to provide a reaction surface for stability, propulsion, control by the player. The vehicle is fitted with proprietary 360 DEG  swivelling castors F as shown in Figure 2 and 3 to permit movement of the vehicle in any direction as propelled by the player. <IMAGE>
Patent GB-2234364-A (GB)
Title: Method of producing  lambda /4-shifted diffraction grating
Inventor: FUJIWARA MASATOSHI
IPC: G02B5/18
Filed: 1990-03-16
Abstract: A method of manufacturing a  lambda /4-shifted diffraction grating includes the steps of applying an image reversible resist (2) on a substrate (1) on which a diffraction grating is to be formed, making interference exposure (3), applying an intermediate layer (4) and a photoresist layer (5), exposing and developing to remove layers (4) and (5) in one area thus exposing layer (2) in this area, developing the exposed image reversible resist, to form a first pattern of the interference exposure (Fig 1 (c)), developing the image reversible resist on the remaining region of the substrate after a reversal process of the image reversible resist, to form a second pattern which is a reversed pattern of the first pattern of the interference exposure (Fig 1 (d)) and etching to transfer the first and second resist patterns into the substrate (Fig 1(e)). Alternatively, the first pattern may be formed by reversal processing. <IMAGE>
Patent GB-2245974-A (GB)
Title: Tyre pressure indicator
Inventor: MILLS ANTHONY OSMOND
IPC: B60C23/00
Filed: 1990-07-13
Abstract: An integral tyre pressure indicator is located between the tyre or inner tube side wall (6) and the inflation valve (8). The indicator comprises inner and outer members (1), (3) through which a flexible tube (5) passes. Poppers (2) extend from the tube outwardly through the outer member (3) formed of two parts which can be moved towards or away from each other to determine the portions of the poppers visible. Excess pressure causes the poppers to move out, low pressure results in the poppers being flush. Springs (4) prevent centrifugal forces producing a false indication. <IMAGE>
Patent GB-2247746-A (GB)
Title: Gas-fired room heater
Inventor: EASBY WILLIAM
IPC: F24C3/12
Filed: 1990-08-11
Abstract: A gas-fired room heater of the kind having plaque burner means 22 supplied with a gas/air mixture from supply chamber means adjacent its rear surface, wherein said supply chamber means is horizontally divided into two or more separate chambers 11, each of which extends the full width of the plaque burner means, and wherein there is gas control means 27 whereby a gas supply to one or more of said chambers can be shut off, while the supply to the other or others is maintained. Gas supplied passes through venturi 15 and entrains air from an injector 17. <IMAGE>
Patent GB-2236782-A (GB)
Title: Acoustic telemetry
Inventor: BUTTERFIELD MICHAEL HUGHES
IPC: E21B47/16
Filed: 1990-10-03
Abstract: A method for transmitting data from sensors (50) near the bottom of a well during drilling involves converting the signals from the sensors into binary digit form, and transmitting them as acoustic signals along the drill string (24) to a receiver (46) at the drilling rig. By using several hammers arranged to hit the drill string in succession, the data transmission rate is improved. The hammers may be arranged to hit one or more circumferential flanges on the drill string. <IMAGE>
Patent GB-2249345-A (GB)
Title: Spark plug
Inventor: HSU CHIN-HSIN
IPC: H01T13/32
Filed: 1990-11-02
Abstract: The insulator 1, containing the central electrode 11, is located in a plug body formed in two separable parts 2, 3 connected by screw threads. A cover 6 extends over exterior flats on the pants 2, 3. The earth electrode 32 may take various forms (Figs. 4 to 6). <IMAGE>
Patent GB-2250353-A (GB)
Title: Improvements in tiltable load supporting platforms
Inventor: LINDSAY RICHARD ARTHUR
IPC: H04N5/222
Filed: 1990-11-29
Abstract: The disclosure relates to a counter-balanced tiltable platform (10) for receiving and supporting a load such as a camera. The arrangement includes a base (11), an intermediate support (13) mounted on the base to move in a vertical direction with respect to the base, pivot means (15) for mounting the platform on the intermediate support to tilt about a horizontal axis in either direction from a normal position, means to locate a load on the platform with its centre of gravity over the horizontal axis when the platform is in said normal position and means (25, 27, 31) acting through the intermediate support to raise the support and thereby the platform in response to tilting of the platform in either direction from said normal position to maintain the centre of gravity of the loaded platform in a constant horizontal plane and thereby to counter-balance the loaded platform.
Patent GB-2243641-A (GB)
Title: Self-adjusting packing member for glazing
Inventor: HALL KENNETH
IPC: E06B3/54
Filed: 1991-04-26
Abstract: A self-adjusting packing member (1) comprising: a body (2) having at least two weakened regions (5), said weakened regions (5) being located on opposite sides of the body (2), and at least two projections (6) which are aligned with the weakened regions (5) and project from the sides of the body (2), such that when said packing member (1) is placed in a recess to be packed the projections (6) are compressed thereby causing the weakened regions (5) to deform and to grip the sides of the recess. The packing is particularly useful for glazing. More complicated packing pieces include ones with integral flanges (Figs 3 and 4, not shown) and wedge-shaped pieces, which may be connected in pairs to extend either side of the corner of a glazing unit (Fig. 6, not shown). <IMAGE>
Patent GB-2255826-A (GB)
Title: Indicators
Inventor: CASSIDY RONALD FREDERICK
IPC: G01L19/12
Filed: 1991-05-13
Abstract: A differential pressure indicator is of the type which uses a magnetically attracted spring loaded pop-up button 44, 46 to indicate when the pressure difference between two fluids reaches a predetermined difference. In order to reduce or eliminate false readings caused by fretting between the button 44, 46 and a passage in a housing 41b in which it slides the button and the passage have a square cross-section to prevent rotation. The invention can also be applied to other pressure indicators as well as temperature and flow indicators. Furthermore, the rotation may be prevented by use of other non-circular cross-sections or a spline. <IMAGE>
Patent GB-2249724-A (GB)
Title: Use of lithium salts to increase life-expectancy
Inventor: COPPEN ALEC JAMES
IPC: A61K31/135
Filed: 1991-05-24
Abstract: A method for increasing the life expectancy of a human, or animal subject, comprising administering lithium in a pharmaceutically acceptable form to the subject, preferably in combination with a pharmaceutically acceptable form of an L-phenyl isopropylamine derivative of formula (I), in which R1 is an alkyl group having 1 to 5 carbon atoms, R2 is a propyl, propenyl or propynyl group which may be substituted by a hydrogen group or a halogen atom or, if R3 or R4 is not hydrogen, R2 can be hydrogen, and R3 and R4 are each hydrogen, halogen or a nitro, amino or diazonium group, or a pharmaceutically acceptable acid addition salt thereof.
Patent GB-2262218-A (GB)
Title: Storage rack
Inventor: WARREN MORTEN VILLIERS
IPC: A47B81/06
Filed: 1991-11-29
Abstract: A storage rack for Compact Disc library boxes, comprises a sleeve (2, 3) capable of fitting round three edges of a library box (8, 9) the sleeve holding pairs of ledge members (4) located in side walls (3) of the rack, the ledge members (4) being capable of being extended from the side walls (3) to form a support ledge for a library box, in which the ledge members are formed of strip material which, when required, can be deflected inwards out of the plane defined by their respective side walls. This allows a simple adjustment of the ledge positions within the rack so that single and double thickness boxes are readily accommodated for storage. <IMAGE>
Patent GB-2263015-A (GB)
Title: Bonding semiconductor wafers
Inventor: MUKERJEE ROBIN
IPC: H01L21/58
Filed: 1991-12-31
Abstract: A germanium arsenide on silicon integrated circuit is manufactured by first preparing a silicon substrate. This is done by etching a silicon wafer, or by cutting the wafer with a diamond saw, then bonding the substrate to a tiltable work base temporarily. This is done by spraying a mild adhesive on to the integrated circuit to be, this being later expelled by etching chemicals. The tiltable work base is then tilted at 90 DEG . Then the masks prepare a etch resist area with etch resist resin. After the entire upper layer of the substrate has been etched at 90 DEG  and the remains of the resin have been washed away, processing of the germanium arsenide can proceed. This is done by etching or sawing up a germanium arsenide wafer and etching it at 90 DEG in the same way as the silicon substrate was prepared. After the resin has been washed off mechanical grips can position the germanium arsenide material on the silicon substrate and then micro waves can bond the two flat surfaces together. Ion beams can then adjust the electrical properties of the integrated circuit.
Patent GB-915016-A (GB)
Abstract: 915,016. Knitting-machines. SINGERFIDELITY Inc. Feb. 1, 1961 [April 15, 1960], No. 3761/61. Class 74 (2). A multi-feeder circular machine has a yarncontrolling ring 31, mounted on and rotating with the dial 15 inside the needle circle and having yarn contacting teeth 38 with radial leading edges 39, the ring 31 having a rim 33 that overlaps the dial to prevent ingress of yarn and having a shoulder 18 that projects over the dial 15 to prevent ingress of yarn between dial and controller. In operation, the yarn is carried around by the teeth 38 into the path of a gripper and cutter 17 which cuts and holds the yarn until it is again presented for knitting by one of the feeders 13.
Patent GB-2257874-A (GB)
Title: Signal level measuring system for a radio telephone receiver
Inventor: CAHILL STEPHEN V
IPC: H04B1/16
Filed: 1992-06-12
Abstract: In a system (200), and associated method Fig. 9, (not shown), for measuring a signal level of a signal received by a receiver, such as a radio telephone, the signal received by the receiver is applied to a variable amplifier (254). The amplification of the variable amplifier (254) is adjusted such that an amplified signal generated therefrom (260) is within the dynamic range of an intermediate frequency circuit (272). The level of amplification required to position the signal level of the amplified signal (260) within the dynamic range of the intermediate frequency circuit (272) is measured (284) and the signal level of the signal received by the receiver is calculated (284). The system enables rapid measurement of signal levels to determine when "hand-off" should occur in a cellular radio telephone system using TDMA. <IMAGE>
Patent GB-2260542-A (GB)
Title: High performance segmented elastomer
Inventor: HALASA ADEL FARHAN
IPC: C08F297/04
Filed: 1992-10-15
Abstract: The invention comprises high performance segmented elastomers which can be made into tire treads which exhibit outstanding traction characteristics while maintaining good rolling resistance and tread durability. This invention more specifically reveals a rubber polymer which is comprised of repeat units which are derived essentially from at least one conjugated diene monomer, wherein the first segment has a number average molecular weight which is within the range of about 25,000 to about 350,000; and (b) a final segment which is comprised of repeat units which are derived from 1,3-butadiene, isoprene, and styrene, wherein the repeat units in the final segment are in essentially random order, and wherein the final segment has a number average molecular weight which is within the range of about 25,000 to about 350,000.
Patent GB-2260481-A (GB)
Title: Shelving
Inventor: THORNLEY ROBERT STEVEN
IPC: A47B57/22
Filed: 1992-10-15
Abstract: A free-standing shelving system of the type comprises four uprights which support a plurality of rectangular shelves. Attached at each corner of each shelf 5 are respective pegs 12-15 which are shaped to co-operate with corresponding keyhole-shaped holes 16-19 in the upright 4. In order to allow the corner of each shelf to be offered up to the internal corner of the upright, and attached thereto without distortion of the components, the enlarged portions of holes 16-19 are displaced laterally away from the corner. The narrow portions of holes 16-19 are, however, positioned so as to tightly hold the shelf corner into the upright, thus providing a rigid joint.   <IMAGE>
Patent GB-2274242-A (GB)
Title: Adjustable chair-bed for medical use.
Inventor: PARKER GEORGE CHRISTOPHER
IPC: A61G5/00
Filed: 1992-12-10
Abstract: An adjustable chair-bed (1) for use in supporting a patient during medical treatment comprises a rest portion (3) defining a supporting surface (44) upon which the patient rests in use. An adjustment means (2) connects the rest portion to a base (8) to allow adjustment of the vertical position of the rest portion for raising or lowering the patient. The adjustment means comprises a linkage (20, 23) having a parallelogram type configuration and a hydraulic ram (34). <IMAGE>
Patent GB-2261302-A (GB)
Title: Real image viewfinder requiring no field lens
Inventor: BETENSKY ELLIS I
IPC: G02B15/00
Filed: 1992-12-21
Abstract: A real image zooming viewfinder (100; 200) comprising three optical units (110, 120, 140; 210, 220, 240) with refracting optical power and an additional moving reflective optical unit (130; 230). Zooming is accomplished by moving one of the refractive optical units and the additional reflective optical unit (130; 230) or by moving the first and the second optical units (110 and 120; 210 and 220). The need for field lens is eliminated by having the first and the second unit (110 and 120; 210 and 220) cooperate to make the finder system (100; 200) telecentric with respect to principal rays at the intermediate image plane. <IMAGE>
Patent GB-2264315-A (GB)
Title: Establishing electrical connection with a tool in a well
Inventor: MEYNIER PATRICK
IPC: E21B23/14
Filed: 1993-02-22
Abstract: An intervention tool R1, R2 is permanently installed on the outside of a casing pipe or tubing 2 in proximity to a tubular section 5 provided with a lateral cavity 6. A single- contact or multi-contact plug 7 connected to the device R1, R2 is positioned at the bottom of the cavity. A connecting element 9 provided with a retractable finger 11 is lowered into the pipe 2 at the end of a cable 10 that has one or several conducting lines. A guide ramp 13 allows the finger 11 to be guided towards the cavity 6 when the element 9 comes close to it. The end of the finger 11 bears a socket 12 designed to engage with the plug 7. Signals may thus be picked up by or sent to the tool at will and only when necessary without having to establish a permanent connection. Application to active or passive monitoring of an oil effluent deposit, for example. <IMAGE>
Patent GB-2265692-A (GB)
Title: Thermostatically controlled valve assembly
Inventor: SAUR ROLAND
IPC: G05D23/13
Filed: 1993-02-23
Abstract: A thermostatically controlled valve assembly for an internal combustion engine cooling system which defines a main valve and a bypass valve, comprises a unitary plastics component which defines a main valve plate 17 and a cage- like member 25 extending from the plate 17, the end of the member 25 remote from the plate 17 forming part of the bypass valve. A thermostatic operating element 15, the casing of which is connected to a main valve plate 17, is surrounded by the cage-like member 25. The part of the by-pass valve formed by the member 25 may be a stem for carrying a further valve plate (Fig. 5, not shown) or may constitute a sliding spool closure 28. <IMAGE>
Patent GB-2277098-A (GB)
Title: Electrochemical process for adjusting the steel-to-concrete bond strength and improving the sealing of the steel-concrete interface
Inventor: MILLER JOHN BRUCE
IPC: E04G23/04
Filed: 1993-04-15
Abstract: If source of DC voltage, preferably in the range of 5 - 40 volts, is connected at its negative side to the embedded steel and at its positive side to an external distributed electrode formed on the surface of the concrete structure, (eg. a self-adherent electrolytic mass of moist pulp fiber, or a conductive coating), application of voltage to the structure and the resulting current flow between embedded steel and the external electrode initially results in a progressive reduction in the steel-to-concrete bond strength (useful in connection with pre-tensioned or post-tensioned structures) and continued application of the voltage results in a progressive increase in bond strength, ultimately reaching a maximum strength significantly above initial values. By reference to pre-established database values, the process may be easily controlled to realize targeted modifications in bond strength. Significant improvement can also be achieved in the sealing of the interface between steel and concrete, to prevent seepage of contaminating liquids or gases along the interface.
Patent GB-2277557-A (GB)
Title: Sewage pumping stations and pump apparatus
Inventor: TEBBY STEPHEN WALKER
IPC: F04D29/50
Filed: 1993-04-27
Abstract: A pumping station shown in Figure 1 includes a pump 2 and a non-return valve 3 which is closed during normal pumping of fluid from a wet well 1 to an outlet pipe 10 and which opens automatically when the pump is driven in the reverse direction to admit fluid from the well 1 into the body 5 of the pump whereby to permit the pump to provide forced recirculation of fluid in the wet well. <IMAGE>
Patent GB-2267595-A (GB)
Title: Procedure for verifying coins
Inventor: ECHAPARE IBARROLA JESUS
IPC: G07D5/00
Filed: 1993-06-01
Abstract: In a procedure for verifying coins an analog electrical signal is generated when a coin passes in front of a sensor, and this signal is subjected to analog-digital conversion to provide a series of measured digital values (Dn). Each measured value is compared with at least one value (S1 to Sn) stored in a memory, and depending on whether predetermined conditions are met or not the measured digital value (Dn) is either stored or discarded. Using a series of measurements in this way helps to overcome the effect of perturbutions in the analog signal. <IMAGE>
Patent GB-2279930-A (GB)
Title: Aircraft structures
Inventor: HICKFORD STEPHANIE M
IPC: B64C1/00
Filed: 1993-06-18
Abstract: To limit the tearing of the outer skin of an aircraft structure, eg the fuselage, as a result of rupture caused for example by an explosion, the skin of the structure has applied to it strips 2 of crack-arresting material which intersect at spaced intervals likely paths of crack or tear propagation. The crack-arresting material may be adheringly bonded tape reinforced with high tensile strength longitudinal fibres. <IMAGE>
Patent GB-2268332-A (GB)
Title: Power transistor with reduced gate resistance and inductance
Inventor: FISHER RAYETTE ANN
IPC: H01L23/485
Filed: 1993-06-23
Abstract: The gate resistance and inductance of power transistors, such as MOSFETS, on a chip are substantially reduced and evenly distributed among the individual MOSFET cells of the chip. The gate terminal of a power MOSFET includes a plurality of gate pads coupled to each other by a gate runner (26) along the periphery of the chip; the number and locations of the gate pads (22) depending on predetermined values of gate resistance, gate inductance, and on-state resistance of the MOSFET, As a result, resistive and inductive losses are reduced; gating of the individual MOSFET cells is substantially synchronized; and device gain is improved. Hence, device efficiency is improved by reducing the time required to reach the minimum on-state resistance thereof. The invention also applies to the base pads of bipolar transistors. <IMAGE>
Patent GB-2268224-A (GB)
Title: Letterplates
Inventor: SCOTT IAN
IPC: A62C2/06
Filed: 1993-06-24
Abstract: A letterplate comprising an assembly (10) which includes a mounting plate (11) and closure flap (12), and preferably a sleeve (13) to extend within a slot in a door or the like, is provided with intumescent material (31,32,33) so as to seal the slot and provide effective fire resistance when subjected to a high temperature. Preferably, the letter plate further comprises an inner assembly which includes a sleeve telescopically engageable with the sleeve (13) of the mounting plate assembly (10) and having one or more of a brush-like sealing device, a further pivoted flap and a hood, the sleeve being provided externally with further intumescent material. <IMAGE>
Patent GB-2268979-A (GB)
Title: Sealing and blade retaining arrangement for a turbomachine rotor.
Inventor: BOURU MICHEL ANDRE
IPC: F01D5/30
Filed: 1993-07-08
Abstract: A turbomachine rotor 6 having axial grooves in which the roots (8) of the blades 9 are received is provided with an annular side plate 1 masking the ends of the axial grooves, and a retainer ring 2 disposed between the side plate and radial flanges 16 carried by the blades. Interengaging inclined surfaces 23 and 18 on the radial flanges 16 and retainer ring 2 cause the ring 2 to press axially against the side plate 1 in response to the centrifugal forces acting on the ring 2, and stop means 15 provided on the blades or rotor 6 act to prevent centrifugal movement of the side plate 1. Alternatively, (Fig 5) the interengaging inclined surfaces may be provided on the rotor and side plate so that the side plate is pressed against the retainer ring, and stop means on the side plate and retainer ring limit centrifugal movement of the retainer ring. The arrangements avoid compression of the sealing parts at the bottoms of the grooves thereby providing improved wear resistance. <IMAGE>