baber/WOPTO huggingface dataset:
Patent GB-2225656-A (GB)
Title: Electric power control
Inventor: CARDER TIMOTHY JOHN
IPC: A61B18/12
Filed: 1989-11-03
Abstract: Electrosurgery apparatus includes an r.f. power amplifier 10 with an output to a patient electrode 20. The amplifier 10 is controlled by the voltage of input signals from a control unit 3 which receives samples of the output voltage and current. The voltage and current signals are supplied to A/D converters 35, 34 to provide digital signals used to address a look-up table in an EPROM 140 and provide a digital output representative of load impedance. A switch 44 is set to the desired mode/power curve and provides a digital signal which together with the impedance signal is used to address a second look-up table in an EPROM 142 which contains digital representations of the output voltage of the amplifier 10 required to produce the desired power level. An adder 52 compares the required voltage with a feedback of the actual voltage to produce an error signal that is supplied to the amplifier 10 to control its output. A switch 43 sets the power level, and a power feedback signal may be used instead of voltage feedback. An alarm 59 is provided. <IMAGE>
Patent GB-2228446-A (GB)
Title: Image forming apparatus
Inventor: OKAMOTO KEIJI
IPC: G03G15/02
Filed: 1990-01-25
Abstract: An image forming apparatus having a charging means (2) for forming an electrostatic latent image on a photosensitive element; and including a support means (5-1) normally mounted in the apparatus and which supports the charging means (2) in a manner movable such as to change the gap between the surface of the photosensitive element and the charging means; and a positioning means (5-1b) which is in contact with the charging means (2) when the support means (5-1) is mounted in the apparatus. and positions the charging means within its range of movement in the support means to give a constant predetermined distance between the surface of the photosensitive element and the charging means. …<IMAGE>…
Patent GB-2241527-A (GB)
Title: Mining apparatus and method
Inventor: SMART BRIAN G D
IPC: E21D23/14
Filed: 1990-02-13
Abstract: Mining apparatus comprises two rigid elongate members joined together in an articulated manner and a signalling device arranged to provide information dependent upon the relationship of one of the members with respect to the other of the members. The invention is particularly applicable to measure the relationship between adjacent pans and an articulated mine conveyor, for example to assist in the alignment of the conveyor. The signalling device may have two base members (1 and 2), which, in use are respectively bolted to two adjacent pans of an articulated conveyor. Relative movement between the members (1 and 2) is translated by components (3, 4 and 5) into movement detectable by rectilinear potentiometers (9 and 10). <IMAGE>
Patent GB-2229445-A (GB)
Title: Magnetic recording medium
Inventor: TAKANO FUMIO
IPC: C09D175/00
Filed: 1990-02-15
Abstract: A magnetic recording medium has a magnetic layer comprising a vinyl chloride copolymer as a binder and a magnetic powder and formed on a non-magnetic support. The vinyl chloride copolymer contains a hydroxyl group and a quaternary ammonium salt, wherein the hydroxyl group is derived from a monoallyl or monomethallyl ether of a polyhydroxyl compound, or a monoallyl or monomethallyl thioether of a polyhydroxyl compound. The quaternary ammonium salt can be derived eg. from a monomer such as diallyldimethylammonium chloride, or it can be made by reacting an epoxy group with a tertiary amine.
Patent GB-2244629-A (GB)
Title: Three channel audio transmission and/or reproduction systems
Inventor: SCHILLER RICARD FRIEDRICH
IPC: H04S7/00
Filed: 1990-05-30
Abstract: In order to permit three-component (left, right and back) audio signals (LS, RS, BS) to be conveyed by a three-channel (left, right and mono) transmission system and still permit stereo and mono compatibility, the signals are encoded so that the three channels carry LS - 1 DIVIDED 2 BS, RS - 1 DIVIDED 2 BS and LS + RS + BS, respectively. Upon receipt, the signals can be decoded back to LS, RS and BS respectively. In a mono receiver without such a decoder, the signal LS + RS + BS on the mono channel is employed, and in a stereo receiver the signals LS - 1 DIVIDED 2 BS and RS - 1 DIVIDED 2 BS on the stereo channels are employed. <IMAGE>
Patent GB-2238849-A (GB)
Title: Push tap
Inventor: JONES JOHN JOSEPH
IPC: F16K21/04
Filed: 1990-06-22
Abstract: A press operated adaptor comprises an insert body 11 inserted within a tap body 10, said insert body having a central bore within which is slidably and sealingly located an actuator rod 14 including a central fluid flow bore 17 and intersecting diametric bore 18 to enable fluid flow through said actuator rod into a chamber at the lower end of said central bore of said insert body 11. The insert body also includes fluid flow apertures 19 to enable fluid to flow from said central chamber out through the outlet of said tap in the open position of the actuator rod 14. Biassing means, spring 15 is provided to return the actuator rod to its closed position upon release such that O-rings sealingly isolate the diametric bore 18 from the chamber of the insert body to shut off the flow. Delay means comprising a piston 29 and cylinder 22 arrangement may be provided for delaying the return action of the actuator rod 14 to enable the tap to remain on for a predeterminable period following release after actuation. <IMAGE>
Patent GB-2235681-A (GB)
Title: Wire-rope-changing winch
Inventor: LAWRENCE EDWARD
IPC: B66B19/02
Filed: 1990-07-16
Abstract: A wire-rope-changing winch, e.g. for use in a colliery, has barrel 2 rotatable about axis 7, with first and second compartments 3, 4 and optionally further first and second compartments 3, 4. The compartments 3, 4 or 5, 6 are separated by transition compartments 8 or 9. A tail rope 26 is coiled onto, and from, a first compartment 5, and a wire winding rope 25 is coiled onto, and from, a second compartment 6. The winding rope is releasably attached to the tail rope by an end cap 27. Transition compartment 9 includes helical vane 10 having a first surface (11) to deflect automatically a trailing portion of winding on tail rope 26 from compartment 5 into the transition compartment. A second surface (12) deflects automatically a leading portion of the attached winding rope 25 from the transition compartment 9 into second compartment 6. Compartment 9 has supports 13,14 to support cap 27 above barrel 2. The winch is trailer-mounted, rotated hydraulically by engine 17, braked by calipers acting on discs 23, and is adjustable axially by ram 22. <IMAGE>
Patent GB-2256274-A (GB)
Title: Gauging apparatus
Inventor: ROBINSON VICTOR MURRAY
IPC: G01B3/56
Filed: 1991-05-18
Abstract: Apparatus for use in the building and construction trade for assessing the spacing between two members or the angle therebetween has first and second elongate members 10 and 11 each having a pair of parallel long edges and at each end of each member a respective transverse face extending generally normally to the adjacent long edges. Each member has an elongate through-slot 12, 13 extending along the length of the respective member and a single screw-threaded clamping bolt and wing nut assembly adjustably holds the two members together. A pin upstanding from one member engages in an elongate groove in the other member to constrain the two members to slide linearly unless the nut and bolt assembly is released sufficiently. <IMAGE>
Patent GB-2247723-A (GB)
Title: Gasket to be arranged between two enameled flanges
Inventor: SWAMEYE KAPIL DEO
IPC: F16L23/16
Filed: 1991-08-21
Abstract: A gasket to be arranged between two enameled flanges comprising an annular envelope 1 of corrosion-resistant envelope material open to the outside, and a combination of insert rings 2, 4, 5 of different materials, of which two steel insert rings 4 and 5 have a wedge-type cross section, in order to form by relative rotation of the insert rings a shim having a thickness varying along the circumference for compensation of angular deviations between the two flange surfaces to be sealed, wherein there are only two further insert rings 2 of uniform thickness, which are arranged on the two opposite sides of said metallic shim, 4, 5 and which consist of an elastic material. <IMAGE>
Patent GB-2249343-A (GB)
Title: Friction stays
Inventor: DOLMAN TERRY J
IPC: E05D11/06
Filed: 1991-09-27
Abstract: A stay for a window has a channel section (10) for connection to the frame and an arm (12) for connection to the opening window leaf. A linkage (14, 16,17) extends between the arm and the channel and includes a slider (20) on which is mounted at least one of the links and which slides along the channel during opening and closing movement of the arm. The slider carries an elongate member which is biased into a position in which the member engages a stop (23) on the channel to restrict the opening movement of the arm. A member can be depressed to disengage it from the slot and allow full opening movement of the window. A device may be provided between the slider and the base channel for selective operation to limit the opening movement of the leaf. This device may be an elongate removable intermediate stop that prevents the arm opening to the maximum extent and limits the opening to a point at which, for example, ventilation is provided but access through the window is not possible. As a second possibility a screw may be provided on an elongate restrictor bar attached to the slider so that when the screw is in an operative position it contacts the stop before the leaf is fully open. A third possibility is to provide a screw on the slider which, when moved to an operative position, engages the slider. <IMAGE>
Patent GB-2258107-A (GB)
Title: Operational amplifiers and response speeds thereof
Inventor: LEE BANG-WON
IPC: H03F3/45
Filed: 1991-10-21
Abstract: In an operational amplifier or a comparator, a slew rate speed-up circuit improving the slew rate, without extra power consumption comprises a first pull-up transistor 9 having a gate connected to an output terminal 23 of a differential amplifier 1, 2 and 3, and having a channel connected between a power supply voltage terminal VDD and a first output terminal 25, a second pull-up transistor 10 having a gate connected to the output terminal 23 of the differential amplifier, a second output terminal 26 connected to one end of the channel of the second pull-up transistor 10, a current regulating means 30, connected between the first output terminal 25 and the second output terminal 26, having one common current path 14, one pull-up current path 12 and one pull-down current path 13, a first pulldown transistor 8 having a channel connected between the first output terminal 25 and a ground or reference voltage terminal VSS, and a second pull-down transistor 8 having a channel connected between the second output terminal 26 and the ground or reference voltage terminal VSS. The amplifier can be used in a semiconductor memory. <IMAGE>
Patent GB-2262337-A (GB)
Title: Apparatus for sensing a gas by pressure modulation spectroscopy
Inventor: DAKIN JOHN PHILIP
IPC: G01N21/17
Filed: 1991-12-09
Abstract: Apparatus for sensing a gas by pressure modulation spectroscopy, which apparatus comprises a reference gas cell 8, an acoustic resonant cavity (20, Fig 3, not shown) for providing varying pressure in the reference gas cell, an electrically driven acoustic transducer (22) for driving the cavity (20), and monitoring means for monitoring the state of acoustic resonance of the gas in the acoustic resonant cavity (20) relative to the state of an alternating electrical drive signal which is applied to the acoustic driving transducer (22). The apparatus is such that the information derived on the state of the actual acoustic resonant cavity, relative to the applied alternating electrical drive signal to the acoustic driving transducer, is used to control the frequency of the alternating electrical drive signal applied to the acoustic driving transducer driving the acoustic resonant cavity and hence to lock the frequency of operation of the apparatus to a point at or close to the peak resonance condition of the acoustic resonant cavity. <IMAGE>
Patent GB-2265889-A (GB)
Title: Flow control device
Inventor: BENTLEY JOHN FREDERICK WALKDEN
IPC: B67D1/02
Filed: 1992-02-12
Abstract: A flow control device, e.g. for dispensing a beverage such as beer from a pressurised bulk supply, comprises a valve with an operating element 16, and a handle 20 with a surface 23 cooperating with an extremity of the operating element, the handle being mounted for angular movement and for translational movement if the force applied to the handle exceeds a threshold value, the translational movement causing the valve to be opened and being opposed by spring means in the valve. The translational movement is opposed by resilient means and the angular movement is opposed by yieldable means such as a damper 30. The extremity of the operating element may be provided with a friction reducing means such as roller 24. The surface 23 may be provided with a recessed formation 40 which the end of said operating element 16 enters, allowing the valve to be close at the end of a "stroke" of the handle. <IMAGE>
Patent GB-2260093-A (GB)
Title: Tool for sizing and repairing a band
Inventor: CHOU SCOTT M S
IPC: A44C5/02
Filed: 1992-07-31
Abstract: A tool for sizing and repairing a band (133, Fig. 21, not shown) comprising bit means (87a) for inhibiting movement of said band (133) and having a first end and a second end, said first end having a tip portion (95a) for engagement with a said band (133, Fig. 21) and a base (12, Fig. 1, not shown) including receiving means (58, Fig. 1, not shown) for detachably securing said second end of said bit means (87a) to said base (12, Fig. 1, not shown). Also disclosed is a method for repairing and sizing a band (133, Fig. 21, not shown) by acting on screws to insert or remove the screw from the band. <IMAGE>
Patent GB-2273963-A (GB)
Title: Compensator device e.g. for the mechanical, over-run braking system of a        trailer
Inventor: SHUTTLEWORTH KEVIN
IPC: B60T7/20
Filed: 1992-09-07
Abstract: A compensator device which acts as to transmit e.g. a braking force from a brake actuator rod 3 to a plurality of brake cables or rods 4 leading to wheel brakes, comprises a beam 1 having at least one integrally formed pivot portion 1b on which a pivotal member 2 is pivotally supported. The pivotal member has an opening defined by tabs 2c which is smaller than the width (w. Fig. 5) of the pivot portion 1b to prevent dislodgement in use, but larger than the thickness of the pivot portion to permit assembly prior to use. <IMAGE>
Patent GB-2260857-A (GB)
Title: Conductivity-modulated-type MOSFET
Inventor: SEKI YASUKAZU
IPC: H01L29/78
Filed: 1992-09-17
Abstract: A conductivity-modulated-type MOSFET comprises a base layer 3 provided on a drain layer 1. A first semiconductor region 4, having the opposite conductivity-type to the base layer 3, is provided in the base layer 3. An insulating layer 11 is provided on a portion of the first semiconductor region 4, and a gate is provided on the insulation layer 11. A second semiconductor region 51, having the same conductivity type as the base layer 3 is provided in the base layer 3 at a periphery of the MOSFET. <IMAGE>
Patent GB-2275053-A (GB)
Title: Method of making sintered alloy steel components.
Inventor: BREWIN PETER RONALD
IPC: C22C33/02
Filed: 1993-02-10
Abstract: A green compact is formed from a mixture of powders comprising a high alloy powder (in a proportion 5 to 90 per cent), a low alloy, iron base or pure iron powder, and free carbon up to 1.2 per cent, optionally with a lubricant, sintering the green compact at a temperature such that no permanent liquid alloy phase is formed during the sintering process, and cooling the sintered component, and in which the cooling in the range between 900 and 300 DEG C is controlled to between 10 and 400 DEG C per minute, measured as a mean over that cooling range, and in which no following austenising heat treatment is applied. This eliminates the need for a reheating and second high speed quench.
Patent GB-2274768-A (GB)
Title: A bread baking process and apparatus
Inventor: BRENNAN JOSEPH
IPC: A21B7/00
Filed: 1993-02-11
Abstract: Dough is formed in a dough mixer (10) and cut by a dough divider (12) into dough pieces. The dough pieces are delivered on a conveyor (14) to a dough moulding machine (16). Air is blown onto the dough pieces on the conveyor (14) to form a thin outer skin on each dough piece. The dough pieces pass from the moulding machine (16) through an initial prover (18) through a panner moulder (20) to a tinning station (22) in which they are discharged into tins. Then the tins with dough pass through a final prover (24) and an oven (26) to form bread loaves. Downstream of the oven (26) the bread is removed from the tins and passed through a bread cooler (36) in which the bread is rapidly cooled by passing a high volume of cooling air at relatively high humidity through the cooler (36). The hot tins are delivered to a tin cooler (32) having a carousel on which the tins cool naturally in air for a preset time period. Cooled tins are returned to the timing station (22) via a tin greaser (34). <IMAGE>
Patent GB-2268472-A (GB)
Title: Plastic stackable/nestable boxes
Inventor: MONTALAR VINCENTE SANCHEZ
IPC: B65D21/06
Filed: 1993-04-15
Abstract: A stackable/nestable box has stacking members (9) including stubs (11) movable in vertical tracks, the members (9) being movable by pivoting/sliding between two positions: a vertical one for nesting empty boxes and a horizontal one for stacking full boxes. <IMAGE>
Patent GB-2268908-A (GB)
Title: Self inking stamp with ink pad out of contact when not in use
Inventor: SHIRAISHI HARUHITO
IPC: B41K1/42
Filed: 1993-07-22
Abstract: A stamp holder 1 having a lid 14 incorporating an ink pad 14a capable of closing the end of the holder is provided with a mechanism 15 for controlling the amount by which the stamp 2 protrudes from the holder for stamping, and a rack and pinion mechanism 18, 56 for rotating the lid away from the stamp for use. The tooth 56a of the pin ion is narrower than the gap between the teeth 18a, 18c of the rack; thus the stamp may be stored out of contact with the ink pad, to be brought into contact immediately prior to use before the pinion 56 is engaged by rack 18, rotating the ink pad lid away from the stamp. <IMAGE>
Patent GB-2282158-A (GB)
Title: An acoustic liner assembly
Inventor: MCCARTHY EOIN T
IPC: E04D13/16
Filed: 1993-09-06
Abstract: An acoustic liner assembly 1 comprises acoustic insulation material 6 supported by perforated liners 5 carried on purlins 10. Insulating roof panels (3, 4) are spaced above purlins 10 by spacers 8, defining an air passageway having inlets 14, 15. An air outlet 17 is provided centrally, and a fan 12 causes air circulation through passageway 12.   In an alternative embodiment (Fig. 4, not shown) panels (3,4) are supported directly on purlins 10 which define air passageways between themselves through which air is circulated. <IMAGE>
Patent GB-2282096-A (GB)
Title: A corrugated scaffolding tube and its manufacture
Inventor: WANG JING
IPC: B29C70/52
Filed: 1993-09-24
Abstract: A method of manufacturing a tube 1 comprises the steps of: forming a tube from an uncured plastics material; curing an inner surface 2 of the tube to form a fully cured central core; moulding the uncured outer surface 3 of the tube into a desired shape; and fully curing the outer surface of the tube. The outside of the tube may be corrugated, and the tube can be used in scaffolding. Clamps with corrugated inserts (figs. 2, 3, 4, not shown) are used to prevent movement of the tube relative to the clamp. The tube may be formed by pultrusion of glass fibre, carbon fibre or aramid with polyester, vinyl ester or epoxy resin. In an alternative method, the tube is entirely cured in the first curing step, and an outer layer is then moulded onto the tube and subsequently cured. <IMAGE>
Patent GB-2272784-A (GB)
Title: Controlling the positioning of corrugated-board sheet processing machine
Inventor: ADACHI NOKIHISA
IPC: G05D3/12
Filed: 1993-11-04
Abstract: A corrugated-board sheet processing machine includes processing means (10) for the sheet, driving means (14) for moving and stopping the processing means (10) to and at a desired point on the sheet and a control section (16) for giving instructions on a moving direction, speed, etc. to the driving means (10), driving means (14) position etc. being fed back to the control section (16). Positioning is done, taking a value to which the processing means (10) is to be accurately positioned as a target value, the current value actually achieved being read and stored. A corrected value is taken as a current value without positional correction, when trial processing is performed on the sheet and a processing size falls within an allowable range. Position is corrected (25) to move the processing means (10) to such a position as to set the processing size within the allowable range, when the processing size in the trial processing is out of the allowable range. A difference between the current value and a corrected value after the positional correction is computed, the target value plus the difference being taken as a new target value for next positioning. <IMAGE>
Patent GB-2284165-A (GB)
Title: Dust Separator
Inventor: LOGAN EDWARD ALEXANDER
IPC: B04C5/26
Filed: 1993-11-24
Abstract: A separating device (1) is provided for separation of particles from a stream of air or other gas. The particles are separated from the gas stream in a cyclonic separator (3) whose lower end feeds into a cylindrical chamber (6) enclosing a falling cylindrical film of liquid into which the separated particles are fed so as to be entrapped. The entrapped particles are then fed away in the liquid for analysis. A second device includes two cyclones in tandem with the first acting as a pre-filter to separate out over large particles prior to the airstream going to the second cyclone for entrainment of the remaining particles in the liquid. <IMAGE>
Patent GB-2276124-A (GB)
Title: Displacement of roller bearing blocks mounted on carriages
Inventor: ROGGE GUNTER
IPC: B41F5/24
Filed: 1994-03-02
Abstract: To displace a plate cylinder 14 and inking roller 15 relative to an impression cylinder 1 the respective bearing blocks are mounted on carriages 13, 16. Carriage 13 is movable in a carriage guideway fixed to the frame 2, and carriage 16 is movable along a guideway of the first carriage 13. To allow the carriages to be displaced with sufficient accuracy without expensive control devices, two spindle screw nuts 10, 20 designed as toothed belt pulleys are mounted in the first carriage 13 parallel to each other, and the screw spindles 5, 17 screwed into them are each mounted selectively for free rotation and for being fixed, on the one hand in the machine frame 2 and, on the other hand, in the second carriage 16. In the first carriage 16 there is mounted a further drive belt pulley 24 that is drivable by a motor 18 and securable by a securing device 33, this further drive belt pulley driving an endless toothed belt 23 that drives said spindle screw nuts 10, 20 designed as toothed belt pulleys. Manually operable knobs 8, 18 are carried on the spindles. <IMAGE>