baber/WOPTO huggingface dataset:
Patent GB-2234129-A (GB)
Title: Opto-electronic amplifier devices
Inventor: BYRON KEVIN CHRISTOPHER
IPC: H04B10/29
Filed: 1989-06-29
Abstract: Part of a pulsed optical signal So is detected by a device (1), for example a transmissive detector and modulator device, and provides a corresponding electrical signal (Se). This electrical signal is used to trigger a pulse generator (5), possibly after amplification (at 4). The undetected optical signal (So<1>) is applied to a semiconductor pulsed amplifier (6) to which the pulse generator output (Se<11>) is also applied. The transmission time for optical and electrical signals between the device (1) and the pulsed amplifier (6) is equalised, such as by a fibre delay line (3), so that the pulse generator output is synchronised with the optical signal pulses arriving at pulsed amplifier (6). The output optical signal (So<11>) is then both amplified and of reduced pulse width in comparison with the input optical signal (So). The arrangement may be used in an underwater optical communication system. <IMAGE>
Patent GB-2222255-A (GB)
Title: Sensing breakage of glass
Inventor: BROWN RICHARD
IPC: B06B1/06
Filed: 1989-08-16
Abstract: Known types of glass breakage sensors are not always capable of distinguishing between an impact which breaks the glass and one which does not and are therefore prone to false alarms. The present invention relates to apparatus for detecting breakage of a glass article e.g. a window (12) while differentiating from non-breaking impacts, comprising a sensor (10) having a film of polymeric piezoelectric material (14) having metallised electrodes (16), (18) on its opposed faces. The film is secured in use to the glass (12) to produce electrical signals derived from mechanical vibration of the glass (12). Means are provided for deriving from said signals a high frequency component e.g. 200 KHz, representative of breakage. The film is of circular shape. <IMAGE>
Patent GB-2222699-A (GB)
Title: Cable core with a twisting channel, and laying optical fibre therein
Inventor: GILL RONALD YAXLEY
IPC: G02B6/44
Filed: 1989-09-06
Abstract: A cable core is formed with at least one continuous longitudinal channel (groove) for receiving a filament (e.g. optical fibre which may be a ribbon), the twist angle of the channel oscillating 42 as a function of longitudinal position, with relatively short-pitch, small amplitude variations superimposed on a relatively long-pitch variation 41. Apparatus for extruding such a core is also disclosed. Apparatus for laying an optical fibre unit into one of a plurality of parallel helical or reversing helical grooves in the outer surface of a cable core 1, comprises: means for conveying the core 1 along a path; a downstream guide 51 freely rotatable about the core path and having an aperture for feeding the fibre unit into the groove and an inward projection for following one of the grooves to maintain registration of the downstream guide with the groove; an upstream guide 5 independently rotatable about the core path and adjacent the downstream guide, having means for guiding the fibre from a fibre supply towards the downstream guide; and servo drive means 131 responsive to the rotation of the downstream guide relative to the upstream guide to drive the upstream guide such as to reduce that relative angle. <IMAGE>
Patent GB-2223273-A (GB)
Title: Fuel injector control
Inventor: KANESAKA HIROSHI
IPC: F02M45/00
Filed: 1989-09-15
Abstract: An electromagnetically-operated valve 25 controls the application of fuel injection pump pressure to the injection valve chamber 15 to regulate the pressures at which the valve 13 opens and closes dependent upon engine operating conditions, e.g. higher pressure at low engine speed. 
<IMAGE>
Patent GB-2225118-A (GB)
Title: Method and apparatus for measurement of azimuth of a borehole while drilling
Inventor: HELM WALTER A
IPC: E21B47/022
Filed: 1989-11-22
Abstract: A method for determining the azimuth angle of a borehole being drilled, whilst a drillstring is rotating about the axis of the borehole, by means of an instrument which is carried by the drillstring down the borehole, and which is rotating with the drillstring, comprising the steps of:- 
 
  (a) sensing on a plurality of occasions during a cycle of rotation of the drillstring the instantaneous components of the gravitational field in the direction of the drillstring axis and in a direction perpendicular thereto; 
  (b) sensing on a plurality of occasions during a cycle of rotation of the drillstring the instantaneous components of the magnetic field in the direction of the drillstring axis and in a direction perpendicular thereto; 
  (c) determining the time average of the gravitational component in the direction of the drillstring axis; 
  (d) determining the time average of the magnetic field component in the direction of the drillstring axis; 
  (e) determining the real and imaginary parts of the discrete fourier transform of said gravitational field component in a direction perpendicular to the drillstring axis as a function of time; 
  (f) determining the real and imaginary parts of the discrete fourier transform of said magnetic field component in a direction perpendicular to the drillstring axis as a function of time; and 
  (g) determining the azimuth angle from said time averaged gravitational component and said time associated magnetic field component in the direction of the drillstring axis, and from said real and imaginary associated with said gravitational field component in a direction perpendicular to the drillstring axis and with said magnetic field component in a direction perpendicular to the drillstring axis.
Patent GB-2240093-A (GB)
Title: Sheet sensing apparatus
Inventor: PILLING ROGER
IPC: B65H7/12
Filed: 1990-01-19
Abstract: A sheet sensing apparatus comprises two pairs of laterally spaced rollers (28, 29; 26, 27) which are separated on passage of a sheet. Each pair of rollers (26, 27; 28, 29) is coupled to respective arms (8, 18) via styli (13, 20). Arm (18) is in the form of a see-saw plate fixed to the stylus (20) and moves in the opposite direction to the arm (8). In response to passage of a sheet between either pair of rollers an output signal is produced by relative movement between ferrite rod (21) and an inductor (10 Fig. 1) independently of the orientation of the sheet fed in. <IMAGE>
Patent GB-2234086-A (GB)
Title: Lighting apparatus
Inventor: GREGSON IAN BARRY
IPC: F21S8/00
Filed: 1990-02-15
Abstract: Lighting apparatus such as a portable emergency lighting unit comprises a light source 10 and a plurality of fibre optic cables 12 having input ends arranged adjacent the light source, and output ends 16 arranged in a line, the output ends being located progressively further from the light source and lying at an angle to a general direction 18 in which the fibre optic cables extend so that when the output ends 16 are viewed looking one way 20 in said direction 18, the illuminated ends 16 are visible, but when viewed in said direction 18 the other way 22 the illuminated ends are not visible. Filters and shutters can be employed at the input ends of the cables to provide a coloured and animated effect. <IMAGE>
Patent GB-2237931-A (GB)
Title: "Multi-sublayered nitride insulating layer"
Inventor: KIM SUNGTAE
IPC: H01L27/115
Filed: 1990-02-28
Abstract: A semiconductor device and a manufacturing method thereof are disclosed, the semiconductor device comprising: a first conductive layer; and oxide layer formed upon the first conductive layer; a nitride layer in the form of multiple sublayers formed upon the oxide layer; another oxide layer formed upon the nitride layer in the form of multiple sublayers; and a second conductive layer formed upon the structure obtained through the preceding steps. The multi-sublayered nitride layer according to the present invention is applicable to semiconductor devices such as capacitors of memory devices and gate insulation for the floating gates of EEPROMs. <IMAGE>
Patent GB-2240204-A (GB)
Title: Colour filter layer of a liquid crystal display
Inventor: CHOI KWANGSOO
IPC: G02F1/1335
Filed: 1990-05-01
Abstract: A liquid crystal display comprising upper and lower transparent glass substrates, an array of thin film transistors, a colour filter layer (110) comprising a plurality of colour filters (114R, 114G, 114B) mosaically laid on the upper glass substrate (100) and a black matrix disposed between said colour filters to block the light rays incident between them, and a liquid crystal layer sealingly filled between said upper and lower glass substrates. The black matrix has a three-layer structure obtained by sequentially depositing a silicon nitride film (111), a light absorbing layer (112) and a chromium layer (113) on said upper glass substrate (100). The light absorbing layer may be SiGe. <IMAGE>
Patent GB-2232533-A (GB)
Title: Consumer unit housing
Inventor: PATTON STUART
IPC: H02B1/46
Filed: 1990-05-08
Abstract: A consumer unit has a housing 100 with a pivoting lid 25 which conceals the contents of the unit, but which allows access to switching gear 38 by removal of a part (42) (Fig 3) if desired. Contents other than the switching gear are protected by a divider (45). The lid 25 has a locking device (62) (Fig 4) remote from the hinged end. A hinge assembly is detailed (Figs. 5 to 7). <IMAGE>
Patent GB-2245724-A (GB)
Title: Software protection in a data processing network
Inventor: HOLMES KEITH
IPC: G06F21/10
Filed: 1990-06-28
Abstract: A technique of software asset protection is described in which software files are distributed over a data processing network to workstations. Before the software file is downloaded to a workstation a text file is sent, 26, to the workstation. This text file which is displayed, 28, on the workstation comprises the terms and conditions upon which the software file is being supplied. The user at the workstation is then prompted to supply a user input, 30, indicating whether the terms and conditions are accepted or rejected. Only if the terms and conditions are accepted, 32, is the software file downloaded, 36, to the workstation. The acceptance of the terms and conditions is logged, 34, within the data processing network and provides a means of auditing the distribution of software files throughout the network. Alternatively, the text file and software file are sent together to the workstation and the software file is deleted if the conditions are not accepted. <IMAGE>
Patent GB-2246390-A (GB)
Title: Car alarm
Inventor: SUNAMI SADAKATSU
IPC: B60R25/40
Filed: 1990-07-25
Abstract: A car theft proofing system comprising a sensor (41, 600) for detecting insertion into a door lock mechanism 40 of a plate, bar or other article, an alarm device 14, alarm drive means 12, control means to cause the alarm device 14 to give the alarm, and a radio transmitter 110 for detecting insertion of the article and transmitting a radio wave. The alarm drive means 12 includes a portable remote control transmitter 10 and a receiver 11 disposed on a car body. said remote control transmitter 10 including abnormality alarm means 111 for transmitting a theft signal in response to the radio wave transmitted from said radio transmitter 110. <IMAGE>
Patent GB-2235677-A (GB)
Title: Conveyor belt scraper
Inventor: RAPPEN ALBERT
IPC: B65G45/00
Filed: 1990-09-06
Abstract: In a scraper for the cleaning of conveyor belts (1), having a bearing axle (2) to carry scraper arms (4) mounted thereon with the aid of clips (3), a swivel pin (7) is provided for each scraper arm (4), disposed above and axially parallel to the bearing axle (2). Each scraper arm (4) is urged resiliently against the bearing axle (2) or clip (3). In this way, the scraper arm (4) and its scraper blade (6) is permanently urged satisfactorily against the conveyor belt (1) to be cleaned, ensuring an optimum and low-wear cleaning action. The arm (4) may be urged by means of a spring member (10) in the form of a resilient symmetrical paraboloid of rotation. Alternatively the arm (4) may be made of resilient material clamped on the swivel pin (7) and elastically supported on the clip (3). <IMAGE>
Patent GB-2238157-A (GB)
Title: Loading/unloading mechanism for read and/or write head
Inventor: SUGAHARA TAKAMITSU
IPC: G11B5/54
Filed: 1990-10-08
Abstract: A mechanism for loading/unloading a read and/or write head (1a, 1b) of a disk drive apparatus against a magnetic disk (3), includes a lifter (6a, 6b) which bends a suspension (2a, 2b) supporting the read and/or write head. The suspension is bent by moving the lifter in response to movement of the head actuator (4) to detach the read and/or write head mounted on a tip of the suspension (2a, 2b) from the magnetic disk (3) by a given distance, to protect the heads (1a, 1b) and the disk (3) from damage. <IMAGE>
Patent GB-2240510-A (GB)
Title: Forming cards
Inventor: SAUL GARRY
IPC: G09F3/10
Filed: 1990-11-06
Abstract: A strip of card-forming facestock material is mounted on a carrier stock 5 of translucent material by means of an adhesive. The adhesive is cured by passing U.V. light through the carrier stock 5. The strip of card-forming material is then cut into any desired shape such as a plurality of spaced-apart cards 2 or tags. The carrier stock 5 may have index holes 8 for mounting in a computer controlled printer for automatic printing onto at least the rear faces 4 of the cards 2. <IMAGE>
Patent GB-2251210-A (GB)
Title: Unlocking operation of a "locked-out" post-payment postage meter
Inventor: GILHAM DENNIS THOMAS
IPC: G07B17/00
Filed: 1990-12-31
Abstract: A post-payment postage meter, of a kind in which operation is inhibited after the exhaustion of a measurable parameter (e.g. in response to an internal calendar), is reactivated by the input of a pseudo-random number generated by a remote accounting centre only if the number matches a pseudo-random number generated within the meter itself. In a preferred form, a portable memory device is shuttled (e.g. by post) between the meter and the accounting centre. At the accounting centre the latest accounting details from the meter are read and justified w.r.t. the holders account before the random number is generated and stored to the portable memory. At the postage meter the random number is compared against the internally generated number, and if justified, the operation of the meter is enabled and the latest accounting data is stored to the memory device for conveyance to the accounting centre. It is stated that the portable memory device can be replaced by telephonic transmission of data between meter and account centre. <IMAGE>
Patent GB-2240109-A (GB)
Title: Method for treating a phosphor
Inventor: TONO HIDEO
IPC: C09K11/56
Filed: 1991-01-21
Abstract: A method for treating a phosphor, which comprises treating a phosphor with an aqueous reagent solution comprising a chelating agent, an oxidizing agent and an alkali agent.
Patent GB-2242911-A (GB)
Title: Electrochemical production of TI(IV)oxy salt for reducing aromatic nitrocompounds to amines
Inventor: BANDLISH BALDEV KUMAR
IPC: C25B3/25
Filed: 1991-04-02
Abstract: According to the process, a titanium(IV)oxy salt is electrochemically reduced to form a titanium(III)oxy salt product, which can be employed as a reducing agent to chemically reduce the aromatic nitro compounds e.g. 4,4'-dinitrostilbene- 2,2'-disulphonic acid, and the resulting re-oxidized titanium salts may be recycled to the electrochemical reduction step of the process. The titanium(III)oxy salt product is highly soluble in strong acid solutions and exhibits improved oxidation stability.
Patent GB-2243111-A (GB)
Title: Laminate and process for producing same
Inventor: ELLIOTT THOMAS GEORGE
IPC: B32B37/00
Filed: 1991-04-02
Abstract: The invention relates to a laminate for use in roofing which is curable in U.V. radiation such as in daylight, comprising a reinforcing layer in the form of chopped ''E'' glass fibre (10), and a support layer in the form of glass fibre tissue (11) on the upper (as viewed) surface thereof, impregnated respectively with a first and second quantity of a U.V. curable polymer composition (12 to 14) and all sandwiched between a first and second outer protective sheet of suitable material such as nylon or melinex (trade mark) (15 and 16).
Patent GB-2254361-A (GB)
Title: Paint can and brush holder.
Inventor: WHALE WILLIAM EDWARD
IPC: E06C7/14
Filed: 1991-04-05
Abstract: A paint can and brush holder enables all items needed for painting to be carried in one hand or mounted on a ladder whilst painting is carried out. The holder accepts the bottom 41/2  inches of redundant plastic lemonade bottles of the 2 litre size, as well as tailor made paint containers. A paint brush clip 2 allows the brush 8 to drip into the can. A dusting brush 9 and a cloth 10 are mounted on further clips 2.   <IMAGE>
Patent GB-2246045-A (GB)
Title: Video signal multi-keying circuit
Inventor: ROSS JOHN DAVID
IPC: H04N5/272
Filed: 1991-04-26
Abstract: A plurality of overlay video signals (such as titles) is keyed into a background television signal in different areas of the background signal. A single keying waveform processor 16 may therefore be time shared to process key signals for the overlay signals (eg to determine transitions between the keys); this is facilitated by providing dual port RAMs and RAM digital to analogue converters for the key signals. The key signals may be previewed, and colour borders provided to the different areas. <IMAGE>
Patent GB-2244464-A (GB)
Title: A people mover apparatus
Inventor: SAITO CHUICHI
IPC: B66B23/22
Filed: 1991-05-24
Abstract: An escalator or moving walkway comprises a plurality of treadboards 8, coupled with each other in the endless form, for conveying people thereon, a driving device 21 for driving the treadboards 8, which has a driving mechanism, including an electric motor, for transmitting a driving force from the motor to the treadboards 8 and a power converting unit 25 for supplying electric power to the motor. Component devices of the driving device 21 are categorized into two groups in consideration of heat generated, heat sensitivity, noise or vibration generated in the respective component devices. Component devices from different groups are arranged in different locations which are remote from each other in the direction of the length of the escalator; e.g. heat generating components are located in a machine room 15B, and heat sensitive components are located in machine room 14B at the opposite end of the escalator. <IMAGE>
Patent GB-2245988-A (GB)
Title: Telescopic sight of solid transparent material
Inventor: SCOTT FRASER
IPC: G02B23/02
Filed: 1991-05-30
Abstract: A solid glass (or other transparent material) telescopic sight having a double prism image erecting system, comprises an objective lens 1 adapted to face a target, a graticule 5 disposed substantially at the focal length of the objective lens, a pair of orthogonally arranged prisms 6, 7 to erect the image, and an ocular lens 2 adapted to face an eye of the user. A third lens 4 disposed at the focal length and comprising a doublet lens having the graticule (5) between the components of a doublet lens or adjacent thereto, may be provided. <IMAGE>
Patent GB-2252903-A (GB)
Title: Seat/bed assembly
Inventor: BEARD DAVID
IPC: A47C17/17
Filed: 1991-09-10
Abstract: An assembly interconvertible between a seat and a bed, for a motor caravan or the like, has a first panel (3) slidable in a horizontal plane relative to a base (1) to form the base of a seat in its rear position and the front portion of a bed in its forward position. A second panel (4) is hinged, at (5), at its front edge to the rear edge of the first panel (3). A strut (6) is pivotally connected at (7) to the second panel (4) and at (8) to a fixed pivot on the base. A third panel (9) may be hinged at (10) to the rear or upper edge of the second panel (4) and rest at its rear edge on the strut (6). When the first panel is in its forward position, all three panels (3, 4, 9) lie in a horizontal plane whereas when the first panel is in its rear position, the second panel (4) is supported by the strut (6) to form a back for the seat. <IMAGE>
Patent GB-2261067-A (GB)
Title: Identifying nerve axons
Inventor: KNIBB TERENCE FREDERICK
IPC: A61B5/00
Filed: 1991-10-31
Abstract: An apparatus (10) for identifying nerve axons (18) comprises a thermal sensor (14) for sensing heat in a nerve axon caused by the passage of a nerve impulse therealong and a monitor (16) for displaying a thermal image. Alternatively an LED arrangement may be used to indicate presence/absence of heat in the nerve axon. A signal processing means (20) is provided for processing the image signal and a stimulation means (22) may be provided for stimulating the passage of a nerve impulse along an axon (18). A timing means may be provided for timing the passage of an output from the thermal imaging device and/or the signal processing means to coincide with the stimulation of an axon (18) thereby to enhance to image quantity. In operation, the thermal sensor (14) is focused on the nerve axons (18) and an operator views monitor (16) in order to identify a nerve axon. <IMAGE>
Patent GB-2251008-A (GB)
Title: Insulated panel for building exteriors
Inventor: MILL PETER ARTHUR DONALDSON
IPC: E04F13/08
Filed: 1991-11-14
Abstract: A composite building panel for application primarily to the exterior of buildings, comprises a core layer (2) of lightweight insulating foam, said insulating foam being encapsulated in a layer (3) of fluid impermeable material, e.g. bitumen with a latex additive to inhibit the passage of vapor and gasses therethrough, an outer layer consisting of at least one finishing panel (4) adhering to an outer surface of said core layer, and an inner structural insulating sheet (1), of, e.g. honeycombed glass fibre reinforced resin or aluminium compatible with the expansion characteristics of said outer sheet, adhering to an inner surface of said core layer to provide structural integrity to said panel and facilitate attachment thereof to a building structure. <IMAGE>
Patent GB-2251986-A (GB)
Title: Switched electrical contacts for cordless appliances
Inventor: TAYLOR JOHN
IPC: H01H37/54
Filed: 1992-01-17
Abstract: A cordless electrical appliance such as a hot water jug or kettle (2) has terminal pins (13,14,15) engageable with contacts (4, 5, 6) a socket connector in a base (3). The pins (13, 15) are mounted such that they may be moved away from the corresponding base contacts (4, 6) by a spring mechanism (42) in response to operation of a bimetallic actuator (31) when the heater of the appliance overheats. This avoids the need for further contacts within the control. <IMAGE>
Patent GB-2258689-A (GB)
Title: Bricklayer's guide apparatus.
Inventor: BETTS GEOFFREY
IPC: E04G21/18
Filed: 1992-05-29
Abstract: Bricklayer's guide apparatus including a pair of right angle blocks each having a pair of upstanding projections (22) defining a slot (24) for receiving a length of line. The opposed faces of the projections may be provided with staggered teeth which act to grip the line. Spaced abutment elements (16) are provided on each block to define an abutment surface (18) for engagement with a wall corner. <IMAGE>
Patent GB-2271916-A (GB)
Title: Mobile radio communication systems
Inventor: HULBERT ANTHONY PETER
IPC: H04L25/02
Filed: 1992-10-23
Abstract: High speed mobile radio links involve multipath problems and changes in the channel characteristic which rapidly outdate any channel estimate provided through transmission of a known training sequence and equalisation. Updating the training sequence frequently enough results in an undesirable overhead which severely degrades the transmission efficiency. In principle, decisions taken on the detected data as well as a training sequence may be used to provide training updates but this approach is highly susceptible to errors. Accordingly reliability is improved by forward error correction coding involving interleaving using a convolutionel, Fig. 6, or block, Fig. 7, (not shown), coding scheme. <IMAGE>