baber/WOPTO huggingface dataset:
Patent GB-2246524-A (GB)
Title: Dehydroisomerisation catalyst and its use in the preparation of isobutene from n-butane
Inventor: BELLUSSI GIUSEPPE
IPC: B01J23/62
Filed: 1991-07-17
Abstract: A catalyst is described for the preparation of isobutene by dehydroisomerisation of n-butane consisting of a solid, granular support of porous gamma-alumina on the surface of which catalytic quantities of platinum, silica and preferably also one or more promotors such as tin and/or indium are deposited. In a preferred form of embodiment this catalyst is used with a second catalyst which may be formed of Boralite B or a solid granular support of gamma-alumina on the surface of which catalytic quantities of silica are deposited. The present invention relates also to the process of dehydroisomerisation of n-butane to isobutene in which the catalyst is used and the relative operating conditions.
Patent GB-2257642-A (GB)
Title: Engine exhaust system
Inventor: MA THOMAS TSOI-HEI
IPC: F01N3/38
Filed: 1991-07-19
Abstract: An exhaust system for an internal combustion engine comprises an exhaust pipe 10 for the gases emitted from the combustion chambers of the engine, an air supply 14 for introducing additional air 28 under pressure into the exhaust pipe 10, and an igniter 18 for igniting the gaseous mixture consisting of the additional air and the gases from the engine combustion chambers. The air supply 14 comprises at least one air injection orifice 16 injecting a stream of air into the flow of exhaust gases 12 and the igniter 18 is arranged close to an air injection orifice 16 in a region of the exhaust pipe in which the gaseous mixture is in homogeneous. In an alternative construction the air through a central nozzle 16, but supplied to an annular gallery (30) surrounding the exhaust pipe 10 and communicating with it through holes (32, Fig 2, not shown). <IMAGE>
Patent GB-2248968-A (GB)
Title: Focussing arrangements for light emitting or receiving arrays
Inventor: ANDERSON KEITH DOUGLAS
IPC: G02B6/38
Filed: 1991-08-29
Abstract: A transducer 10 comprises an array of light emitting or receiving elements formed in a chip 20 housed package 12. A lens tube 16 having a graded index lens 18 therein is supported with the lens axis 42 perpendicular to and aligned with the array to image the array in a plane of an outer end 48 of the lens tube. An optical fiber ferrule is coupled to the outer end of the lens tube by a sleeve. The elements may be L.E.D.'s or PIN diodes and aligning adjustments 44 of the package 12 and 46 of the tube 15 are made in conjunction with a video camera to focus and centre the image from the elements. <IMAGE>
Patent GB-2261587-A (GB)
Title: Simulated smoking articles
Inventor: TEMPLETON LEROI KING
IPC: A24D1/22
Filed: 1991-11-22
Abstract: A simulated smoking article 10 comprising a non-combustible hollow cylindrical body 12, a filter rod 14 coaxially located at one end of the hollow cylindrical body 12 and a combustible fuel element 16 at the other end of the hollow cylindrical body 12. A hollow thermal conducting member 20 is located between the fuel element 16 and the end of the cylindrical body 12 adjacent the fuel element 16. A porous substrate cylinder 28, which is impregnated with an aerosol generating material, is located within the cylindrical body 12 between the fuel element 16 and the filter rod 14. A flow accelerating means 34 is located next to the porous substrate cylinder 28 at the side thereof facing the filter rod 14. Upstream of the porous substrate cylinder 28 is a gas inlet chamber 30 and downstream, toward the filter rod, is a gas/aerosol mixing chamber 32. A conventional cigarette wrapper 36 circumscribes the circumferential extend of the whole assembly. <IMAGE>
Patent GB-2262055-A (GB)
Title: Distressed paint finishes
Inventor: TUDOR-HART GEORGE HENRY
IPC: B05D5/06
Filed: 1991-11-28
Abstract: A method of producing decorative and/or protective distressed paint finishes on a variety of substrates includes the steps of applying to the substrate an initial coating of a UV light curable acrylic resin; exposing the coated substrate to UV light to cause the coating to cure and adhere to the substrate; applying to the cured base coat an alcohol or water based stain or acid catalysed lacquer or powdered pearl suspension to create a distressed effect and, when the distress coat is dry, applying thereto a clear top coat of a UV curable resin and exposing the coated product to UV light to cause the top coat to cure and adhere to the initial coats.
Patent GB-2255837-A (GB)
Title: Lighting optimization.
Inventor: TOH PENG SENG
IPC: H05B37/02
Filed: 1991-12-16
Abstract: A large combination of lighting arrangements can be tested rapidly to locate an optimum illumination for a particular machine vision task, using multiple light sources 6 supported by a ring 3 and controlled by a host computer which can switch sources on/off, control their brightness, rotate the ring, move the sources radially concurrently or individually and tilt the sources concurrently or individually. This permits simulating a dome-shape lighting, which in principle covers all the possible front-lighting orientations, and accommodating objects of different sizes. A mechanism for maintaining the direction of all the light sources at a fixed focal point during movement is incorporated which can also be used for simulating the dome-shape lighting. <IMAGE>
Patent GB-2267415-A (GB)
Title: Signal switching
Inventor: WILKINSON JAMES HEDLEY
IPC: H04N5/268
Filed: 1992-05-19
Abstract: Apparatus 3 for switching between a plurality of data streams A and B, each of which has a pulsed timing signal (1) Fig. 1, (not shown) synchronised therewith and an associated indicator signal for indicating a first (error-free) or second (error) condition associated with the corresponding data stream, comprises a selector 5 for receiving the data streams and selecting one data stream as an output of the selector 5, and control means 8, 9, 10, 11 for receiving the timing signals (1) and the indicator signals and for controlling the selector 5 to select a new data stream as the output when the indicator signal associated with the currently selected data stream indicates the second condition for that data stream and the first condition is indicated for one or more of the other data streams by the associated indicator signal or signals. The selection is then effected on the first pulse (2) of the or any of the timing signals (1) for which the first condition is indicated for the associated data stream or streams, and the data stream associated with the timing signal containing the said first pulse (2) is selected as the new output. The data streams are from the reproduction heads of a digital video tape recorder. <IMAGE>
Patent GB-2270730-A (GB)
Title: Lining pipe
Inventor: CHARTRES G
IPC: F16L55/26
Filed: 1992-09-18
Abstract: A corroded pipe of, for example, cast iron is lined with a layer of curable sealant such as epoxy resin. The epoxy resin is sprayed onto the inner surface of the pipe from a spray head 1 which is drawn through the pipe as the head rotates. The quality of the surface of the lining formed within the pipe is enhanced by applying pressure to the interior of the pipe for at least a portion of the period during which the lining cures. The curable sealant may be mixed from supplies of heated resin and hardener in a mixer adjacent the spray head 1 and then passed to be cooled through a heat exchanger 11 cooled by exhaust air from an air motor of the spray head 1. <IMAGE>
Patent GB-2261563-A (GB)
Title: Determining phase error and phase locking
Inventor: ADAMS PHILLIP
IPC: H03B28/00
Filed: 1992-10-21
Abstract: A reference signal, such as colour burst forming part of a video signal, is sampled and the samples are accumulated at 54, 55 first before being multiplied at 56, 57 by a coefficient to produce phase error signals. When sampling the color burst signal, separate accumulating means samples signals displaced by 90 degrees. Prior to accumulation, alternate samples, displaced by 180 degrees, are inverted at 52, 53 such that all samples for a particular accumulation have the same sine. A first accumulation is multiplied by the sine of the displacement angle P and the second accumulation is multiplied by the cosine of the displacement angle. In the NTSC system, a displacement angle P is present due to the phase displacement between the color burst and the I and Q sample points. Furthermore, the displacement angle P may be modified to provide hue compensation. The phase error determining circuit may be part of a phase locked loop including sampling ADC type phase comparator and a D/A converter. <IMAGE>
Patent GB-2268192-A (GB)
Title: Matrix-coated reinforcement for production of metal matrix composites
Inventor: WARD-CLOSE CHARLES MALCOLM
IPC: C23C14/18
Filed: 1993-07-29
Abstract: Long reinforcement fibres, e.g. of ceramic material, intended for consolidation to produce a metal matrix composite are pre-coated with matrix metal by a physical vapour deposition process using an apparatus which guides the fibres through a flux of metal vapours several times in various orientations. In a first emobidment, the apparatus comprises two multi-pass transfer rollers (13, 14), one to each side of the evaporator, and a twist roller (15) which is inclined to the plane of the transfer rollers. In another embodiment, reorientation of the fibres is accomplished without a separate twist roller by configuring the transfer rollers with grooves which impart a slight twist to the reinforcement as it leaves the roller surface. The consolidation of fibres, coated using the apparatus, into metal matrix composite form by the application of pressure and heat so as to cause plastic flow and fusion of matrix material is also disclosed.
Patent GB-2273301-A (GB)
Title: Improved gage protection for rock bits
Inventor: SIRACKI MICHAEL A
IPC: B22F7/06
Filed: 1993-10-21
Abstract: A rotary cone drill bit is disclosed as having ultra hard gage maintaining cemented tungsten carbide inserts which are formed from tungsten carbide powder having an average grain size of less than 1.0 micron, preferably in the range of from 0.05 to 0.5 microns cemented with Co, Ni or Fe. Preferably, the carbide is cemented with less than 16 weight percent cobalt. Such inserts have a hardness from 92.5 Rockwell A to 97.0 Rockwell A as compared with less than 92 Rockwell A for previous inserts. These heel row inserts significantly increase the wear resistance of the bit gage surfaces. When used in compression on the gage heel row these inserts will withstand the high impact loads encountered in hard tough rock bit drilling. <IMAGE>
Patent GB-2272930-A (GB)
Title: Tension leg platform
Inventor: GUY RAYMOND GRAHAM
IPC: B63B21/50
Filed: 1993-11-26
Abstract: A tension leg platform 10 comprising a hull portion 14 surmounted by a deck portion 15, in which the hull portion is held down against its own buoyancy by a single tubular tether 11 which is secured at or near its upper end to the hull and at its lower end to the seabed, and in which casing strings 18 extend down within the tether from the deck to the seabed. <IMAGE>
Patent GB-2273441-A (GB)
Title: Veterinary composition for treating mastitis
Inventor: CORRIGAN OWEN
IPC: A61K9/00
Filed: 1993-12-08
Abstract: Composition for treating mastitis in dry cows comprises an antibacterial and a seal composing a gel base containing a heavy metal salt Administration is by the intramammary route. Antibacterial may be a penicillin. Salt is e.g. bismuth subnitrate and gel may be based on aluminium stearate. Seal and antibacterial can be kept separate.
Patent GB-2286565-A (GB)
Title: Trolley for point-of-sale display of newspapers, books, or magazines
Inventor: WAINES CHRISTOPHER T
IPC: A47F7/14
Filed: 1994-02-17
Abstract: A trolley 2 comprises a wheeled base 8, at least two uprights 16, 18 which are spaced apart in the fore-and-aft direction of the trolley, and are fixed to the base at an intermediate position across the width of the base, and a plurality of shelves 54 which are releasably mounted on the uprights 16, 18. In a preferred embodiment, the trolley 2 further comprises generally upright front and rear frames 4, 6 fixed to the base 8 at their lower ends and rigidly interconnected at their upper ends. Additional shelves 44 may be fixed to the front and/or rear frames 4, 6. All shelves are adlustable in their vertical positions. A sign may be filled between brackets 24 and 26. <IMAGE>
Patent GB-2279060-A (GB)
Title: Vehicle inverter
Inventor: MANN ALEXANDER MATHESON
IPC: B66F7/22
Filed: 1994-06-10
Abstract: Apparatus for permitting access to an underside of a vehicle comprising a rotatable frame 1a, 1b which the vehicle is mountable thereon. The mounted vehicle is secured to the frame e.g. by chains and ratchets and rotating means rotates the frame and the mounted vehicle at an orientation relative to the horizontal. Stop means is provided to retain the frame and the mounted vehicle at said orientation. Preferably a motor rotates the frame via a gearbox. The stop means can be the gearbox and a limit switch or a stop box secured to the frame. <IMAGE>
Patent GB-2291604-A (GB)
Title: Apparatus for even distribution of retention pearls on waxed up acrylic veneer crowns and bridges
Inventor: MAKRIS MELIS
IPC: B05B16/00
Filed: 1994-07-22
Abstract: Apparatus for even distribution of retention pearls on acrylic veneer crowns and bridges, the apparatus comprising a spray booth (10) in which is defined a chamber for accommodating an acrylic veneer crown or bridge to which retention pearls are to be applied, the chamber having a base (20) for collecting pearls which do not adhere to the crowns and bridges, the booth being provided with a spray gun (13) having an outlet directed into the chamber for spraying retention pearls into the chamber, a diaphragm (14) extending across the chamber, and a light source (26) for illuminating an area of the crown or bridge, to which area the retention pearls are to be applied. <IMAGE>
Patent GB-2292435-A (GB)
Title: Wheel-mounting assembly for a handcart
Inventor: CHENG CHIN CHANG
IPC: B60B37/10
Filed: 1994-08-18
Abstract: A handcart wheel-mounting assembly includes a mount member 20 which has a tubular portion 21, a pair of lug portions 22 each having a slot 24 therein and a socket 221 vertically defined in each of the first lug portions. A receiving member 11, 12 is co-axially formed in the wheel and is shaped to receive the mount member 20. A resilient member 30 is received in each of the slots 24 and has a latch 31 formed thereon which is biased through the socket 221 into a socket 14. A substantially L-shaped pressing element 32 extends from the resilient member and has a horizontal section located above the associated lug portion. <IMAGE>
Patent GB-2296376-A (GB)
Title: Bipolar transistor fabrication with trench isolation
Inventor: RYUM BYUNG-RYUL
IPC: H01L21/331
Filed: 1994-12-19
Abstract: A bipolar transistor has a buried collector 22 on a silicon substrate 21, a collector 23 defined by trenches filled with insulating material, an intrinsic base 30 formed on the collector 23, an extrinsic base 26 electrically isolated from the silicon substrate 21 by a thermal-oxide layer 25, a conductive polysilicon layer 31 formed in self-alignment to connect the intrinsic base with the extrinsic base, and an emitter 33 formed on a portion of the intrinsic base and composed of polysilicon doped with an impurity. The trench may be defined by etching, or by a side-wall nitride layer. <IMAGE>
Patent GB-2285215-A (GB)
Title: Bath mattress or cushion
Inventor: VARLET MARC
IPC: A47K3/12
Filed: 1994-12-21
Abstract: A bath accessory of the mattress or cushion type is designed to receive a baby in the lying or seated position and comprises a block (10) of cushioning material, eg foamed plastics, completely covered with a cover (2) which cannot be torn by a baby. In the mattress form a trough shaped configuration is provided with a wedge shaped headpiece (20) having an indent (21). <IMAGE>
Patent GB-2285711-A (GB)
Title: Electromagnetic actuators
Inventor: HUGHES AUSTIN
IPC: E05B17/20
Filed: 1995-01-11
Abstract: The actuator comprises a rod 1 passing through an aperture in a plate 4 which can thus move between perpendicular and tilted conditions on the rod. When energized, an electromagnet 6 attracts the plate 4 to tilt the same on the rod 1 and draw the rod along by friction until the plate contacts the magnet. When the magnet is de-energized, the plate returns to its perpendicular condition and is shifted back along the rod by a spring 5. By supplying the electromagnet with a train of successive DC energizing pulses the rod can thus be shifted by incremental stages through any desired distance by the repetitive tilting and resetting of the plate. Bi-directional embodiments are also described, together with the application of such an actuator to drive a motorised lock bolt. <IMAGE>
Patent GB-2286925-A (GB)
Title: An electrical switching system
Inventor: BICKFORD GRAHAM
IPC: H02G5/06
Filed: 1995-02-24
Abstract: An electrical switching system for use in a control and connection system includes several linear conductors (3, 4), enclosed in a casing (2). The casing has one or more socket apertures. One of the conductors is interrupted in the socket and at the point of interruption the conductor has a contact (13, 14), either side of the interruption. A switch means (10) is provided to electrically connect the contacts. A switch operating means (50) can be inserted into the socket aperture. <IMAGE>
Patent GB-2299228-A (GB)
Title: Digital to analogue converter
Inventor: YAMAMURA YASUO
IPC: H03M1/08
Filed: 1995-03-13
Abstract: A circuit 20 for converting digital data representing audio as a multiplicity of sample values into an analogue audio signal has a delay store 22 and a sample store 23. The data in the sample store 23 is processed by a comparator 24 and a synthesizer 25 which generates a correcting signal. The same data in the delay store 22 is delayed and is output to a digital to analogue converter 27 where it is converted into a decoded analogue signal. The correcting signal is added to the decoded analogue signal in a mixer 26 to produce a combined signal for output as the analogue audio signal. The decoded analogue signal from the digital to analogue converter 27 does not include clearly defined zero crossing points. The correcting signal includes a zero crossing point and thus the output analogue audio signal from the mixer includes a zero crossing point, which improves the quality of the audio during playback.
Patent GB-2285695-A (GB)
Title: Improved power meter
Inventor: PAYNE KENNETH
IPC: G01R21/133
Filed: 1993-03-13
Abstract: An apparatus for measuring electrical power is described wherein the apparatus is adapted to produce an output signal proportional to the product of a supply voltage and current flowing through a connected load. A first signal proportional to the supply voltage and a second signal proportional to the load current are used to inverse modulate (at 5 and 4 respectively Fig 1 not shown) the period of two constant frequency carrier signals. Third and fourth signals derived from the modulated signals are transmitted to a microprocessor, for example via electrical isolating devices. Intervals between successive pulses input at 10 fig 2 are digitised by subtracting at 20 counts of a cycling counter 40 at successive pulses. The average interval corresponding to zero voltage is subtracted at 22 to give an instantaneous voltage value 38 which is multiplied at 26 with a similarly derived current value 39 to give instantaneous power consumption. <IMAGE>
Patent GB-2289587-A (GB)
Title: Model generation
Inventor: WHEADON NIGEL SPENCER
IPC: G01S13/02
Filed: 1995-04-24
Abstract: A model of the ionosphere for use in the operation of a skywave over the horizon radar is generated by taking a set of maps of heights of various ionospheric layers against location for corresponding sunspot numbers, comparing these to the measured value of the layer height at at least one measurement point, and calculating the value of the sunspot number which would give the closest fit of the ionospheric layer heights at those points with the measured value of height, and using this calculated value of sunspot number to produce a second map of ionospheric layer heights against location. A respective local correction term is then applied to the height values in the vicinity of those locations on the map at which measurements have been made, to bring map and measured heights into agreement, the local correction term being derived from the covariance between the heights, the locations of the measured points and the difference between the measured values and the values predicted by the second map at the measurement points. <IMAGE>
Patent GB-2303692-A (GB)
Title: Rapid chilling system
Inventor: BODEN JOHN GUY
IPC: F25D31/00
Filed: 1995-06-15
Abstract: A rapid chilling system has a cover plate (8) which supports a sleeve or a series of sleeves (9) which is immersed in a refrigerant (4) so that bottles cans or other vessels (10) can be inserted ad chilled. The sleeve ensures that no refrigerant is in direct contact with the bottles can or vessel (10) and will enable them to be withdrawn at the appropriate temperature. The system will obviate the need to wipe or otherwise remove the refrigerant from the bottle can or vessel. The sleeves may also be used with other fittings in order to make ice or lollipops. The containment tank for the refrigerant (4) may be remotely mounted from the refrigeration system, the two being connected by flexible or fixed pipes. Such arrangements may be useful on a boat.
Patent GB-2306239-A (GB)
Title: An integrator
Inventor: VISOCCHI PASQUALINO MICHELE
IPC: G06G7/186
Filed: 1995-10-13
Abstract: An integrating circuit finds application in phase locked loop circuits in clock extraction circuits in optical fibre receivers. Two operational amplifiers are connected as shown.
Patent GB-2308986-A (GB)
Title: Fluid filter assembly
Inventor: COX IAN MALCOLM
IPC: B01D27/10
Filed: 1996-01-11
Abstract: A full-flow fluid filter assembly 10 (Figure 1) suitable for an internal combustion engine has a large-pore-size screen 14 and a small-pore-size screen 17 in tandem and a by-pass valve 30 to conduct fluid past the small-pore-size screen when the latter cannot transmit fluid at a desired rate and a pressure difference develops across it sufficient to open the valve against bias spring 32. Tendency for the by-pass valve to open temporarily when the fluid is subjected to a pressure pulse, for example, on engine start up whilst the screen begins to conduct fluid, is countered by valve damping means 40 in the form of a valve member 35, which includes a dished support portion 41 and a control portion 45 as a membrane overlying the dish and, fixed downstream thereof, non-filtering, restricted aperture means 50 which encloses a volume 55 of fluid. The energy of a pressure pulse displacing the control portion is dissipated by viscous drag of the liquid expelled from the enclosure before the control portion can abut the support portion and act thereon to open the valve. The damping means therefore responds to rapid creation of pressure difference to damp valve opening response by delaying the onset of such opening until the energy therefor is dissipated but does not interfere with normal by-pass functioning in response to a steady pressure difference.
Patent GB-2315202-A (GB)
Title: Touch sensitive pads for audio mixer
Inventor: ELVINS PETER
IPC: H04H60/04
Filed: 1996-10-14
Abstract: An audio mixer, eg for disc jockeys, has touch sensitive pads as switches. This enables the user to mix two pieces of music into a third one by rapidly touching or tapping the pads (so called vamping).