baber/WOPTO huggingface dataset:
Patent GB-2251524-A (GB)
Title: Analogue oversampled finite impulse response filter
Inventor: HUANG QIUTING
IPC: H03H17/06
Filed: 1990-10-17
Abstract: An analogue oversampled FIR filter structure has a  SIGMA - DELTA modulator (Block 1) which encodes an analogue input signal into a train of digital pulses. The digital pulses representing the analogue input are stored and propagated down a binary shift register (Block 2) which controls the coupling between a reference source and passive or active components forming part of an analogue summer or summer/integrator (Block 3). The passive or active components provide the coefficients for the FIR filter being implemented. The values of the passive or active components can be programmable or variable to implement programmable or adaptive FIR filters. An example of the SIGMA - DELTA  modulator is described (Fig 2). <IMAGE>
Patent GB-2249442-A (GB)
Title: Correction of quadrature phase error
Inventor: ROKOS GEORGE HEDLEY STORM
IPC: H03D1/22
Filed: 1990-11-01
Abstract: A method of correcting quadrature phase error between in-phase (I) and quadrature (Q) components of an a.c. signal includes the steps of deriving from each component (OA, OB) a correction signal (AC, BD) and adding the correction signal to the other component, the amplitudes of the correction signals being such as to cause the two resultant vectors (OC, OD) to be in phase quadrature. A feedback arrangement measures the phase difference of the I and Q components, which phase difference is used to derive a phase adjustment signal. The a.c signal may be an r.f. local oscillator signal in a radio transmitter/receiver, or a baseband input signal in a zero IF transmitter or a baseband signal in a zero IF receiver. <IMAGE>
Patent GB-2249650-A (GB)
Title: An earthquake warning device
Inventor: HSU CHIN-HSIN
IPC: G08B21/10
Filed: 1990-11-06
Abstract: The earthquake warning device includes a horizontal leveling instrument with two mercury switches (61, 62 in fig. 2) disposed horizontally, but in opposite directions. As the earthquake warning device is tilted in any direction, one of the mercury switches will be turned on so that an electrical circuit will be actuated to turn on two emergency lights 2 and a loudspeaker 3 thereby sending out warning signals. The intersecting angle between the two mercury switches may be adjusted to vary the sensitivity of the apparatus. <IMAGE>
Patent GB-2243140-A (GB)
Title: Labels
Inventor: SLATER WILLIAM
IPC: G01K11/12
Filed: 1991-04-18
Abstract: A label or tag (10) for an item of clothing has an area (18) thereon that changes colour permanently if the item of clothing is washed above a recommended washing temperature. Then an item of clothing damaged because recommended washing instructions were ignored cannot be taken back to a retailer for replacement or refund on the ground of being faulty. Alternatively, the permanent change may be the appearance disappearance of disintegration of a marking. <IMAGE>
Patent GB-2243486-A (GB)
Title: Complementary vertical bipolar transistors
Inventor: TATSUHIKO IKEDA
IPC: H01L21/8222
Filed: 1991-04-19
Abstract: A p-type polycrystalline silicon layer (45) serving as the base electrode of an npn transistor and a p-type polycrystalline silicon layer (50) serving as the emitter electrode of a pnp transistor are simultaneously formed by forming a p-type polycrystalline silicon layer on the entire surface of a substrate and patterning the layer. Similarly, an n-type polycrystalline silicon layer (46) serving as the emitter electrode of the npn transistor and an n-type polycrystalline silicon layer (49) serving as the base electrode of the pnp transistor are simultaneously formed by forming an n-type polycrystalline silicon layer on the entire surface of the substrate and patterning the layer. Thus, electrodes can be formed without selective impurity implantation and the mask alignment therefor. <IMAGE>
Patent GB-2243965-A (GB)
Title: Mixer circuit
Inventor: USHIDA SUSUMU
IPC: H03B1/04
Filed: 1991-04-23
Abstract: A mixer circuit comprises a differential amplifier formed from a pair of transistors (Q5, Q6) grounded at the emitters thereof, and a double balanced mixer formed from first and second pairs of transistors (Q1-Q2, Q3-Q4); a first impedance element (R5) is interposed between a junction 1 between the emitters of the first pair of transistors of the double balanced mixer and the collector of one of the pair of transistors of the differential, and a second impedance element (R6) is interposed between a junction 2 between the emitters of the second pair of transistors of the double balanced mixer and the collector of the other of the pair of transistors of the differential amplifier. The impedance elements may be resistors. The circuit has improved distortion and band characteristics, and it can assure impedance matching with another circuit at a preceding stage and prevent abnormal oscillation. The circuit may be used in a television tuner or cable television converter. <IMAGE>
Patent GB-2255857-A (GB)
Title: Plasma deposition and etching of semiconductor substrates
Inventor: BROWN STEPHEN
IPC: H01J37/32
Filed: 1991-05-13
Abstract: A reactor 1 for carrying out the plasma deposition on, or etching of, semiconductor substrates comprises a sealed housing 17 defining a chamber 2, a gas inlet 9 into chamber 2, a gas outlet from chamber 2, and electrodes 3, 4 spaced apart and arranged in chamber 2, electrode 3 being provided with a plurality of apertures 12. A gas diffusion member 11 is arranged intermediate gas inlet 9 and electrode 3 and has a plurality of apertures 10 for directing gas from inlet 9 towards electrode 3. The apertures 12, 10 in electrode 3 and the diffusion member 11 are respectively arranged such that gas flow paths defined by apertures 10 in diffusion member 11 and respective apertures 12 in electrode 3 are not aligned. Reactor 1 is further provided with an electrical generating device 23 for creating an electrical potential difference between electrodes 3, 4. <IMAGE>
Patent GB-2245688-A (GB)
Title: Ball closure device with preset clearances
Inventor: D AGOSTINO GUY
IPC: F16K1/14
Filed: 1991-06-13
Abstract: A ball closure device (1) movable to close an orifice (8) comprises a closure ball (10) retained in a chamber (12) defined by the body (2) of the device the ball (10) being self-centering with respect to the orifice (8) as a result of the ball (10) having radial and axial working clearances (JR and JA) within the chamber (12). The radial clearance (JR) results from a difference between the diameters of the chamber (12) and the closure ball (10). The axial clearance (JA) is obtained by means of a push-rod (16) mounted in a passage within the body (2) so that the closure ball (10) acts on one end (21) of the push-rod and the other end (22) of the rod (16) acts through a deformable ball (20) on a small contact area (S2) at the end of the passage, a predetermined pressure applied to the closure ball (10) causing a permanent deformation of the body in the region of the contact area (S2) to form the axial clearance (JA). <IMAGE>
Patent GB-2263862-A (GB)
Title: Shoppers' aid
Inventor: KIRK STEVEN LAWRANCE
IPC: B62B3/14
Filed: 1991-10-16
Abstract: A calculator for use when shopping comprises means for entering a pre-set spending limit, means for entering the prices of items purchased and totalling such prices, and means for providing an audible or visual warning when the total approaches or exceeds the preset limit. The calculator may be clipped to a supermarket trolley or attached to a person's body using straps with touch and close fastenings. <IMAGE>
Patent GB-2260963-A (GB)
Title: Elevator guide rail alignment
Inventor: PEARCE LEN
IPC: G01C1/02
Filed: 1991-10-29
Abstract: The vertical alignment of an elevator guide rail 1 is checked by a method comprising the steps of: fixing a target 5 to said guide rail; mounting a theodolite 8 or the like to said guide rail, and centring said theodolite or the like on said target; and visually checking the alignment of said guide rail between said targets and said theodolite 8 or the like with reference to indicia preferably in the form of a line, provided on a lens or other optical component of said theodolite or the like. The theodolite 8 or the like can be mounted to the guide rail by way of a support means 6 to either a false working platform or a roof of an elevator car, allowing an up-grading of an existing elevator system in addition to aiding installation of a new elevator system. Preferably the theodolite is movably supported. <IMAGE>
Patent GB-2262604-A (GB)
Title: Acousto-ultrasonic testing instrument with coupling condition measurement
Inventor: LIU SHIFENG
IPC: G01N29/28
Filed: 1991-12-16
Abstract: An Acousto-Ultrascnic (AU) testing instrument has coupling condition measurement device. The uncertain of coupling condition becomes certain known for this AU testing instrument. The effect of coupling condition on the results of AU testing measurement can be eliminated and/or calibrated. The final measurement of AU testing can be acoustic wave data in the material tested close to the transmitting transducer 8 and close to the receiving transducer 9. <IMAGE>
Patent GB-2249884-A (GB)
Title: Waterproof plug for electrical connector
Inventor: YAGI SAKAI
IPC: H01R13/52
Filed: 1991-12-20
Abstract: A waterproof plug (A), for an electrical connector, comprises a rubber plug (20) and a rigid stabilising member (21). The rubber plug (20) has an elliptical sealing portion (20c) for sealingly engaging the inner surface of a socket in a connector housing and is formed on the outer periphery of a tubular portion which has an electrical wire insertion bore (20b) therethrough. The rigid stabilising member (21) has supporting columns (21c) projecting in the same direction on opposite sides of a wire insertion hole (21b) in an elliptical base portion (21a). The rubber plug (20) is integrally moulded around the supporting columns (21c) of the stabilising member (21) to encase the supporting columns in the elliptical sealing portion of the rubber plug. The plug enables the size of the connector in which it is used to be minimised. <IMAGE>
Patent GB-913277-A (GB)
Abstract: 913,277. Variable resistors. GIANNINI CONTROLS CORPORATION. Jan. 19, 1961 [Jan. 19, 1960], No. 2232/61. Class 37. A potentiometer comprises an elongated support, such as shown in transverse section at 10 in Fig. 2, having spaced longitudinal edge portions such as 44, 45 between which, turns of a resistive winding 20 are unsupported and a brush such as 30 movable over the winding between the edge portions 44, 45. The support 10 may be of insulating material or of dielectric coated metal. The winding tension is arranged so that the resilient wire 20 follows a curve 46 except where deflected by contact fingers 55. This arrangement reduces friction between winding and brush. Fig. 1 shows a longitudinal section showing contact fingers formed by four wires 55 soldered to a member 34 slidable along a rod 32 by means of a handle 36. A flexible wire 38 connects the contact fingers to terminal 39. Fig. 4 shows a section of an alternative support 62 forming part of an arcuate potentiometer (Fig. 3, not shown).
Patent GB-2264557-A (GB)
Title: Water supply apparatus
Inventor: LOWE JEFFREY CHARLES
IPC: E03C1/05
Filed: 1992-02-28
Abstract: The invention provides a proximity sensor 12 on a water tap 10 which controls the flow of water it supplies. The sensor comprises an infra-red emitter and detector side by side in the tap outlet and the flow of water is achieved by a microprocessor when fluctuating signals caused by the reflection of the radiation by moving hands are detected. The water supply continues only while the fluctuating signal is received, thus avoiding water wastage in, for example, public washrooms. <IMAGE>
Patent GB-2254045-A (GB)
Title: Security cards
Inventor: KING SHERIDAN
IPC: B42D15/10
Filed: 1992-03-13
Abstract: Security cards are produced in continuous stationery form and each card comprises two halves (42, 44) defined in the same web. One of the halves has a viewing aperture (28) and the outer side of the half has a protective covering film (32). There is adhesive (22) covered by release paper (24) on the inner face of one of the halves. The card is sealed by removing the release paper (24) to expose the adhesive (22) and the halves are folded face to face to seal same together. Active identity data (48) is placed at (50) between the halves before they are sealed together. The adhesive patch (22) and release paper (24) may be applied so that the aperture (28) extends therethrough (Fig. 9). <IMAGE>
Patent GB-2253910-A (GB)
Title: Detecting a gaseous, vaporous or colloidal component of a gaseous medium.
Inventor: MAY WOLFGANG
IPC: G01N33/00
Filed: 1992-04-23
Abstract: The gaseous medium enters a test receptacle 1 via a sealing element 3, 4, which is permeable to the gaseous medium but impermeable to reaction solution 2, and is absorbed in reaction solution 2 in which a change in resistance occurs and is detected by a resistance measuring device 7-13 with the aid of electrodes 5, 6 in the reaction solution 2. The reaction solution 2 contains a highly dissociated substance which forms a weakly dissociated compound with the component to be detected. The weakly dissociated compound may be insoluble and precipitate out. Examplified materials for the reaction solution are NaOH+K2 (HgI4) for ammonia, AgNO3 for HCI, Ra(OH), for SO2 and NH2NH2 for acetone. <IMAGE>
Patent GB-2267226-A (GB)
Title: Target boards.
Inventor: LEACH JOHN WILLIAM
IPC: F41J3/00
Filed: 1992-05-28
Abstract: A target board such as a dart board comprises wires 14 held in place by projecting legs 25, 27, which may be double, staple-like legs (and may indeed be actual staples), that are bonded, for instance by welding, brazing or even glueing, to the underside - that is, the board-facing side - of the wires, so that each wire and its leg-like fixing means is an "integral" whole. By this means both the radial and circular wires may be attached to the board. In the case of the radial wire, the outer leg 27 may be bent from the end of the wire. Apart from being double legs, the projecting legs may take the form of a single leg having a short lateral extension to facilitate bending to the wires (32, Fig 3A). <IMAGE>
Patent GB-2260226-A (GB)
Title: Surface mountable electronic shield case and substrate
Inventor: BIZEN TATSUO
IPC: H05K5/00
Filed: 1992-10-02
Abstract: The size precision of a surface mountable electronic part (1) including substrate (2) and case (3), is improved and a production thereof is simplified in that the circuit substrate 2 is housed in the shield case 3 of which an end side is open. The shield case 3 is a. resin case having a shield film 7 and a connection pattern 6 is formed on the inner surface 3a of the case 3. An end 6a of the connection pattern 6 is disposed so as to correspond to an external connection land 4 of the circuit substrate 2, and the other end 6b is extended to the open end 3b of the case. <IMAGE>
Patent GB-2261020-A (GB)
Title: Door handle assembly & method of mounting
Inventor: CLINCH COLIN WILLIAM FREDERICK
IPC: E05B65/20
Filed: 1992-11-03
Abstract: A door handle assembly (10), preferably for a vehicle door, has a lock mechanism operating arrangement (11), made up of an operating handle (12) and an actuation lever (13), and a handle housing (14) to which the operating arrangement (11) is pivotally attached. To facilitate mounting of the door handle assembly (10) to a door, or door frame, the actuation lever (13) projects from the operating handle (12) at a predetermined fixed angle, and the actuation lever (13) is provided with an engagement surface (26) in the form of an open recess (31) directed away from the lock mechanism. The recess is intended to abut a portion (25) of actuation means, such as an actuator rod (23) or cable, for the lock mechanism when the door handle assembly (10) is in its mounted state and the operating handle (12) is displaced. The arrangement is such that the engagement surface automatically engages the end (25) of the rod or the handle assembly is brought towards the door panel, and subsequently brings the end (25) into engagement with recess (31). <IMAGE>
Patent GB-2265170-A (GB)
Title: Cylinder rod fire protection system
Inventor: KOOS JOHN D
IPC: E21B19/00
Filed: 1993-02-26
Abstract: In a fire protection system for the tensioner cylinders 26 of a marine riser tensioner system in oil and gas offshore drilling and production rigs, each tensioner cylinder 26 is coated with intumescent epoxy 54 and the cylinder rod 32 is enclosed with an outer fire protection cylinder 50 which comprises an inner metal lining 60 and an outer jacket 64. The outer jacket 64 comprises an inner multi-layer thick blanket of ceramic fibrous materials and barrier films contained within inner and outer layers of woven ceramic fibres for reinforcement and abrasion resistance. The outer fire protection cylinder 50 telescopes over the tensioner cylinder 26 as the cylinder rod 32 extends and retracts in response to vertical movement of the rigs. The intumescent epoxy 52 on the tensioner cylinder 26 is covered with a bearing sleeve 54 to provide a smooth surface for the telescoping fire protection cylinder 50 and fire retardant mechanisms are located at the tops and bottoms of the telescoping cylinders to prevent intrusion of heat and flame. <IMAGE>
Patent GB-2277278-A (GB)
Title: Energy storage and redelivery device.
Inventor: HUDSON BARRY
IPC: A63H29/18
Filed: 1993-04-22
Abstract: Energy storage and redelivery device comprising a cylinder 8, an axial channel 9 containing an elastomeric band 11 attached to supports 38, 19 such that the twisted elastomer acts as a flexible axle and energy store. A thread 10 is wound around the cylinder and one or more pegs (17, 18 Figure 2) pass through the loop of the elastomer so that when the thread is pulled the cylinder rotates causing the elastomer to twist. When the tension in the thread is relaxed the elastomer untwists causing the cylinder to rotate and the thread to rewind. Toys can be propelled back-and-forth, or unidirectionally, by the device. The cylinder is designed to facilitate easy assembly of the device by separating into two or more parts, or by provision of a socket for inserting the elastomer, or by provision of a socket for inserting a peg. Means are provide for fixing the parts together. <IMAGE>
Patent GB-2265958-A (GB)
Title: Clutch control system
Inventor: JARVIS ROGER PORTER
IPC: F16H61/04
Filed: 1993-05-10
Abstract: A clutch control system comprises an engine speed sensor (26) for monitoring the speed of an engine (10), a clutch actuation sensor (34) for monitoring the operation of a clutch slave cylinder (22), a throttle position sensor (30) and a control unit (36) receives signals from the sensors (26, 34, 30) and determines when clutch control is required. When it is, the control unit switches to a reference mode in which, in a continuous closed loop operation, an engine speed signal Ve is compared to a reference speed signal Vr and the clutch is engaged or disengaged slightly to make the engine speed approach the reference speed.
Patent GB-2268565-A (GB)
Title: Hose assembly
Inventor: LALIKOS JAMES M
IPC: F16L33/22
Filed: 1993-06-16
Abstract: A high pressure (up to 8000 psi) hose assembly comprises an inner core (12) made of PTFE covered by an aramid reinforcing braid (14). The PTFE can, but the aramid cannot, withstand the attack of oils and other fluids which may be conveyed through the hose. Therefore, the aramid is covered by PTFE tape (16) and the end of the hose is sealed inside an end fitting (20). In one embodiment, when the end fitting is swaged or otherwise manipulated to capture the hose, the PTFE inner core extrudes to complete the sealing of the hose end. <IMAGE>
Patent GB-2271229-A (GB)
Title: Monitoring the internal impedance of an accumulator battery in an uninterruptible power supply.
Inventor: JONSSON LENNART
IPC: G01R31/36
Filed: 1993-09-29
Abstract: In an uninterruptible power supply, during the discharge of a battery 1 to a load 3, the current induced by the load and passing through the battery is measured e or calculated c, and the corresponding AC ripple voltage component produced on the battery voltage is measured a, the value for the internal impedance of the battery being calculated from these values in a computer 9. The obtained impedance value is compared to a predetermined reference value to determine the condition of the battery, and an alarm and/or shutdown signal d is produced if the reference value is exceeded. The system also includes an inverter 10 and battery charger 7. <IMAGE>
Patent GB-2284179-A (GB)
Title: Electrofusion coupling element
Inventor: GREAVES CHRISTOPHER IAN
IPC: B29C65/34
Filed: 1993-11-30
Abstract: A heat fusion coupling element 1 comprises: a hollow sleeve member 2 formed from a fusible polymeric material  having at least one electrical heating element disposed about its inner and outer surfaces and 3, 4 and electrical terminals 10, 11 mounted on its outer surface, the terminals being connected to the or each electrical heating element and disposed at or adjacent an end of the sleeve member. The element may be used in conjunction with reducing fittings 37, 38 as shown or with one such fitting butt-welded to a pipe end. <IMAGE>
Patent GB-2273613-A (GB)
Title: Switch mode power supply with power factor correction
Inventor: MILLER PETER
IPC: H02M1/00
Filed: 1993-12-21
Abstract: A switch mode power supply comprising a rectifier D1 for connection to an ac power supply, and a capacitor C1 connected across the output of the rectifier D1 for providing a d.c. power supply to a load. The value of the capacitor C1 is selected such that it provides high frequency decoupling but it is not large enough to significantly smooth the power for the load. The value of the capacitor C1 is such that the voltage across it falls to essentially zero every half cycle. The output from the rectifier is described driving a DC to DC converter employing a transformer T1. <IMAGE>
Patent GB-2273901-A (GB)
Title: Linear motor secondary coil plates
Inventor: TSUKAMOTO YUKIMARO
IPC: B23K20/233
Filed: 1993-12-29
Abstract: A secondary coil for use in a linear motor comprises a composite metal plate having a backing metal layer 1, an intermediate aluminium bonding layer 2 and a copper surface layer 3, all of which are integrally bonded. The intermediate bonding layer and the surface metal layer have a combined thickness of 2 to 8 mm. A copper or copper alloy plate to form the surface layer and an aluminium plate or an aluminium alloy plate to form the intermediate layer are contacted on each other and bonded by rolling. This is then contacted with a steel plate to form the backing metal layer and the plates are also bonded by rolling. <IMAGE>
Patent GB-932687-A (GB)
IPC: A01B15/18
Abstract: 932,687. Agricultural implements. INTERNATIONAL HARVESTER CO. May 22, 1962, No. 19629/62. Class 6(1). A gauge wheel and coulter unit 26 comprises a gauge wheel 27 having a pneumatic tyre 30 formed with a peripheral groove in its tread portion, and a coulter blade 35 in the form of an annulus, the inner edge of which is receivable in the peripheral groove in the tyre and firmly engaged therewith when the tyre is inflated. The inner edge of the coulter blade is formed with an enlarged beading of substantially circular cross-section and the blade has a sharpened scalloped outer edge 37. A scraper in the form of a plate 44 having a central slot to receive the coulter blade and its lower edges in operative engagement with the tyre, is provided.
Patent GB-2287180-A (GB)
Title: Carrying handle
Inventor: FYFE ALISTAIR WILSON
IPC: A45F5/10
Filed: 1994-03-01
Abstract: A carrying handle, eg for carrier bags, has an elongate generally U-section channel portion to receive the bag handles, and a downwardly directed flange at each end to prevent turning of the handle in the hand of a user. <IMAGE>