baber/WOPTO huggingface dataset:
Patent GB-2259228-A (GB)
Title: A high frequency multichannel diversity differential phase shift (DPSK) communications system
Inventor: WILKINSON ROBERT
IPC: H04L1/04
Filed: 1992-10-26
Abstract: A high frequency transmitter comprises a large number of narrowband channels spaced over a broad bandwidth transmission. In one arrangement input data to be transmitted is demultiplexed (1101) so that sections of data are transmitted in groups of channels at 50 baud (say), each 50 baud channel produces a number of diversity channels modulated using difference phase shift key (DPSK) (103) and then added (105) for transmission. In the receiver, coherent summation (803) of close-bunched channels can be used and semi-coherent channel addition (805) can be used across the complete bandwidth. The received signal is converted to digital form then processed by an FFT circuit to produce frequency bins corresponding to the transmitted diversity channel frequencies. DPSK demodulation is carried out and running averages are carried out in each channel to determine the proportion of times that the phase difference falls within allowed limits (907). A discrimination level (908) determines whether individual channels should be excised (914) because of noise corruption. The remaining channels in groups are then added together to determine each data bit received. In semi-coherent addition (905), the measured phase vectors are added vectorially and the vector sum is used to determine the data bit. In a second arrangement the channels of any one group are arranged in bunches of about 10 spread over a bandwidth of about 2 kHz (the experimentally determined coherence bandwidth) and the bunches spread over the whole transmission bandwidth. The bunch channels are added coherently and the resultants are added semi-coherently as before to determine the group data. The group data is then multiplexed to reproduce the high data rate input data. The arrangement allows high data rates to be transmitted with each of the diversity channels carrying only 50 baud.
Patent GB-2264878-A (GB)
Title: Snooker practise board
Inventor: WEST JEFFREY ALEXANDER JAMES
IPC: A63D15/00
Filed: 1993-04-30
Abstract: A snooker cue action practise board consists of a flat oblong shaped board (3) that can be layed on any resonably flat surface at an approximate snooker table height. At one end and in opposite corners on the flat surface of the board (3) are two posts (4) fixed in an upright position. In the center of each post (4) is an elongated slit (6). Between the two posts (4) and passed between the two slits (6) is a rubberized band (7). Securing the bands (7) to the posts (4) are two plates (8). The bands (7) and the plates (8) are held to the posts (4) by the bands (7) own tension. In the center of the two posts (4) fixed centrally to the bands (7) is a cue button (10). The cue button (10) is slightly larger than a cue tip and is concave on the striking side, the side facing away from the bands (7). This concave side is used to practise ones cue action and replaces the need for a cue ball. The snooker cue action practise table replaces the need for a snooker table.
Patent GB-2269362-A (GB)
Title: Videotape cassette
Inventor: YI GIL-GOO
IPC: G11B23/087
Filed: 1993-08-03
Abstract: A videotape cassette of simplified internal structure has an upper half, Fig. 4, with simple wall ribs 60. Locating bosses 46 have radial ribs 64. The lower half, Fig. 5, has similar ribs 60, and locating bosses 48 each with T-shaped, tape guiding ribs 68, 72. U-shaped ribs 62, 74 co-operate to house a reel lock lever. Ribs 66, 54 together shield anti-recording opening 55 having removable tab 56. The structure is said to lower the cost and difficulty of manufacture, and to increase cooling efficiency during injection moulding. <IMAGE>
Patent GB-2280692-A (GB)
Title: A milling insert and milling tool
Inventor: MCGARIAN BRUCE HERMANN FORSYTH
IPC: E21B29/00
Filed: 1993-08-05
Abstract: A cutting insert for use on a down-hole milling tool has a front face provided with a plurality of substantially parallel transversely extending projections 9, 10, 11, 12. Each projection is of substantially triangular form in cross-section and presents an upper front face 13 inclined relative to the plane of the rear face 2 and a lower face 16 substantially perpendicular to the plane of the rear face 2. Each projection defines an apex. The distance S between adjacent apices is between 3.17 and 1.60 millimetres. A down-hole milling tool (not shown) has a pair of cutter blades each provided with an array of inserts. <IMAGE>
Patent GB-2273501-A (GB)
Title: Metal-free dithiophosphoric acid derivatives
Inventor: DIMMIG THOMAS
IPC: C10M159/12
Filed: 1993-11-12
Abstract: Addition products of monoepoxides or diepoxides of mono- or polyunsaturated monocyclic or bicyclic hydrocarbons and dithiophosphoric acids, are produced from the corresponding dithiophosphoric acids and epoxides and are useful as lubricant additives in lubricants based on mineral oils or native oils.
Patent GB-2274159-A (GB)
Title: An illuminator
Inventor: ERION JEFFREY ALLEN
IPC: F21V8/00
Filed: 1993-12-20
Abstract: A lighting system for an optical device for producing a linear light beam from multiple light guides comprises a plurality of light guides (14a - 14c) equally spaced or terminated inside a molded block (16) of clear plastic optical material. The ends of the light guides staggered in such a way as to terminate at predetermined positions adjacent shaped openings (18a - 18o) which reflect the light rays exiting the light guides (14a - 14c) through total internal reflection. The surface of the molded block (16) shaped to focus or spread of the light beam. The reflective surfaces (24a - 24c) may also be shaped to focus or spread of the light beam. Use of the system for vehicle exterior lights is described. <IMAGE>
Patent GB-2289091-A (GB)
Title: Fluid release or drainage device
Inventor: MOFFAT ROBERT JAMES
IPC: B67D1/02
Filed: 1994-05-07
Abstract: A drainage device is intended primarily for a beer pump of the kind - having a non-return inlet valve (18). The device includes two relatively movable, telescopically-received cylinders (2, 4) each having an air bleed aperture (12, 13). To achieve drainage relative movement between the cylinders (2, 4) is effected to align the bleed apertures (12, 13), and simultaneously cause displacement means, in the form of a push rod (7), to unseat the non-return valve (18) in the beer pump. Thus beer stored in the pump can drain downwardly through the valve (18) because the aligned apertures (12, 13) allow the introduction of atmospheric air. Drained beer returns to the beer barrel or other storage device. <IMAGE>
Patent GB-2289466-A (GB)
Title: Porous ceramic articles
Inventor: SAMBROOK RODNEY MARTIN
IPC: C22C1/08
Filed: 1994-05-10
Abstract: A gas generating substance is added to an aqueous dispersion containing ceramic particles and a polymerisable monomer. The gas generating substance forms gas bubbles under the influence of the exotherm of polymerisation, and the pressure and/or temperature are adjusted so that the substance generates the gas before or during the initial stages of the polymerisation.
Patent GB-2295927-A (GB)
Title: Mounting of an integrated circuit on a printed circuit board
Inventor: BARON GARETH RHYS
IPC: H01L23/552
Filed: 1994-12-08
Abstract: Springs 3 on an integrated circuit package 1 make contact with pads 4 on a printed circuit board 2. Spring clips 5 hold the package 1 and a heat sink 7. A dust seal 8 may provide electromagnetic shielding. <IMAGE>
Patent GB-2286038-A (GB)
Title: Burner control apparatus
Inventor: FORD CHRISTOPHER JOHN CHARLES
IPC: F23N5/24
Filed: 1995-01-05
Abstract: Burner control apparatus comprising a flame failure probe 31, and burner control means 15; wherein the control means is constructed and arranged to measure an electrical effect to which the flame failure probe is exposed so as to obtain from said measurements heat output values representative of an actual heat output from a burner 33, and to compare said heat output values with stored reference information for checking that the burner is operating within predetermined limits, and for actuating a fuel-flow valve 11. The electrical effect measured is either the flame generated voltage to which the probe is subjected or a voltage shift, between an AC voltage applied to the burner and a voltage waveform collected by the probe, caused by ionisation within the flame. <IMAGE>
Patent GB-2289415-A (GB)
Title: Instrument for intraosseous insertion of a trocar needle
Inventor: WAISMAN MARC
IPC: A61M25/06
Filed: 1995-02-22
Abstract: A surgical instrument for impact insertion of a trocar needle into bone for connection of a syringe, infusion set, or the like. The instrument comprises a cylindrical housing 22 containing a sliding bolt IV which forces the trocar needle into bone on release of compressed spring III. Spring III is held in a compressed state by pin 57 and ball-bearings 50 or alternatively a trigger mechanism (see Figure 8) may be used. To operate the former device; pin 57 is removed and rear cap 54 screwed down releasing ball-bearings 50 into groove 55. The released bolt IV projects the needle forward until bolt IV is arrested by collar 26. The needle remains in the bone and has at least one side outlet (see Figure 1) for introduction of medicaments into the bone marrow. Depth of penetration may be controlled by unscrewing graduated sleeve 60 from the front of the housing (see Figure 7). <IMAGE>
Patent GB-2287542-A (GB)
Title: Sensorless measurement of electromagnetic actuator displacement device
Inventor: DEAN ARTHUR L
IPC: H02P25/06
Filed: 1995-03-03
Abstract: A constant frequency and amplitude excitation sine wave is imposed on the actuator drive coil 10 through a fixed impedance drive isolation network 18. The amplitude and phase of the voltage across the coil 10 fluctuate depending upon the coil's inductance. This variation in the value of the inductance is dependent upon the change in magnetic flux generated by the coil current supplied from solenoid driver 14 and the air gap between the coil pole and armature 12. Accordingly, by determining coil flux using current sensor 40 a measurable magnitude of displacement can be determined and/or controllably imposed upon a system containing the actuator. Further aspects relate to controlling displacement of the actuator and maintaining cyclically displaceable handling equipment at a desired frequency e.g. by means of a control loop 50. Uses include vibratory finishers and conveyors. <IMAGE>
Patent GB-2299969-A (GB)
Title: Security envelope
Inventor: MACKAY RONNIE
IPC: B65D27/30
Filed: 1995-04-18
Abstract: A security envelope (10) is formed of flexible material, such as PVC, and includes a separable receipt portion (18). The envelope (10) further defines an enclosure having an opening (17) provided with a tamper evident security seal (20). Embodiments of the invention may be utilised in "quick deposit" banking operations in which a customer places cash or other papers in the envelope and then closes the envelope using the security seal (20). A note of the enclosed papers is made on the receipt portion (18). The envelope (10) is deposited in a bank where the teller marks the receipt portion (18), which is then detached from the envelope (10) and retained by the depositor. The envelope (10) may then be transferred to a processing centre which serves a number of bank branch offices.
Patent GB-2290888-A (GB)
Title: Control unit for an induction motor
Inventor: IMANAKA AKIRA
IPC: H02P21/14
Filed: 1995-06-23
Abstract: A control unit for an induction motor detects primary current 2 in the induction motor 1, obtains an error current which becomes zero when the actual value of the primary magnetic flux coincides with a set value provided as a product of a set excitation current Ild* and primary self inductance Ll, and corrects the primary resistance, primary self-inductance, and leak factor according to the error current. The control unit may have correcting section control circuit 18a in which a set error most influential for effecting coincidence between the primary magnetic flux in the induction motor with the primary magnetic flux is preferentially corrected. The computed values of the various motor constants are used in calculating the primary voltage instruction value sent to the variable frequency power converter 3. <IMAGE>
Patent GB-2305434-A (GB)
Title: Abrasive cleaning compositions
Inventor: LUCIANI ALAIN
IPC: C11D1/83
Filed: 1995-09-19
Abstract: A cleaning composition comprises:  A) 1% to 10% w/w of a colloid-forming material, B) 0.5% to 10% w/w of a polymeric thickener, C) 1% to 60% w/w of abrasive particles, and D) a bleaching agent.  Preferably, the colloid-forming material is a clay and the polymeric thickener is a copolymer of acrylic acid. Such a composition can stably suspend the abrasive particles and has the desired rheological properties for a cleaning composition for use on hard surfaces such as ceramic bathroom fittings and toilets.
Patent GB-2304939-A (GB)
Title: Count down clock
Inventor: HUNTER KEITH DAVID
IPC: G04G99/00
Filed: 1995-09-29
Abstract: A clock with a display unit which counts down to zero at twelve midnight on December 31st 1999. The display is in digital form and can display the time remaining to the end of the millennium in any combination of years, months, days, hours, minutes, seconds and fractions of seconds. There may be displayed messages at particular times.
Patent GB-2311966-A (GB)
Title: Motor vehicle manufactured from modular plastics panels
Inventor: JANKEL ROBERT
IPC: B60R21/0134
Filed: 1996-04-11
Abstract: A motor vehicle 26 is constructed from a number of foam filled metal reinforced plastics modular panels, including the base panel 2 and body panels 4-12. Other features include self contained removable light units 70,72 mounted behind transparent panels 14,24 of the body shell to reduce drag, longitudinally adjustable steering wheel 74 and foot pedal assembly 76, and an airbag 86 mounted within the body shell for inflation externally to the vehicle. Advantages include low tooling and manufacturing costs, and a vehicle which is recyclable and resistant to rust.
Patent GB-2312973-A (GB)
Title: Programming aid enabling source code to be viewed with a general purpose document browser
Inventor: NOVICK YORAM
IPC: G06F9/44
Filed: 1996-05-08
Abstract: Disclosed is a programming aid for enabling computer program source code to be viewed using a general purpose document browser responsive to a defined set of control tags determining the appearance of a document, the aid comprising: a parser for generating a symbol table from an input file in which the program is stored; means to derive control tag locations from the symbol table; and an output file generator for inserting, 530, control tags into the program at the derived locations to generate an output file which can be viewed using the general purpose document browser. In this way, the full power of user-chosen general purpose document browsers may be used in software development and maintenance to view programs in a convenient way.
Patent GB-2303242-A (GB)
Title: Optical data recording media and manufacture thereof
Inventor: KAMEZAKI HISAMITSU
IPC: G11B7/24076
Filed: 1996-07-08
Abstract: An writable optical data recording medium has a transparent substrate with a patterned surface on which a dye recording layer 3 is formed. Recesses 2a, 2b and lands 2c in the pattern are joined by curved surfaces 74, 78. Alternatively, projecting portions (2d, figure 11) are provided between the lands and recesses. In another embodiment, dye recording material (3, figure 1) is placed only in recesses (2a, 2b, figure 1) in the substrate (1, figure 1). A reflective layer 4 is made of a material having a lower reflectivity than silver, eg aluminium, copper or a di-carbocyanine dye dispersed vinyl resin solution. The medium can show a reflectivity of not less than 65% on reproduction and the cost of manufacture is reduced by avoiding the use of precious metals in the reflective.
Patent GB-2301274-A (GB)
Title: Safety glove
Inventor: PLUMPTRE MICHAEL JOHN
IPC: A41D19/015
Filed: 1995-12-03
Abstract: A workman's glove provides protection to the user's hand against impact, in that at least the fingertip portions (13, 14) of the glove are reinforced with tubular elements (17) of a crush-resistant material.
Patent GB-2302011-A (GB)
Title: Animal excrement collector
Inventor: KALSI HARJINDER SINGH
IPC: E01H1/12
Filed: 1996-09-13
Abstract: A tongs-like device for picking up animal droppings includes shovel jaws 1 attached to respective parts of a spring handle 3 which are held together by a hinge pin 4. A spring (5) is mounted on the pin 4 so that the jaws 1 call be opened against the spring bias by squeezing together the upper ends of the spring handle 3, using one hand only, and closed by releasing them. The device may be produced in plastic or metal.
Patent GB-2305699-A (GB)
Title: Actuating device for actuating a selector rod of a motor vehicle gearbox
Inventor: DORFSCHMID JENS
IPC: F16H61/30
Filed: 1996-09-25
Abstract: An actuating device (1) for actuating a selector rod (3) of a change-speed gearbox for a motor vehicle produces rotary and linear movement of the rod (3), and includes an actuating unit (7) operatively connected to the selector rod (3) by at least one pivotal connection (22, 24). There may be two actuating units (5, 7), the first (7) producing rotary movement through the pivotal connections, and the second unit (5) acting to produce the linear movement. The device (1) also includes a sensor (11) for recognising the gear which has been selected, and connected to the selector rod (3) through a further pivotal connection (26).
Patent GB-2318275-A (GB)
Title: Lockable safety strap
Inventor: WILSON CHRISTOPHER ANTHONY FRA
IPC: A62B35/00
Filed: 1996-10-15
Abstract: A belt which goes round a childs waist has a lockable buckle and is attached to a strap which is looped to be securely fastened around adult/guardians wrist. The loop can be tightened with a buckle which allows adjustment to any size wrist.
Patent GB-2308479-A (GB)
Title: Semiconductor memory device using asynchronous signal
Inventor: YOO SEUNG-MOON
IPC: G11C11/407
Filed: 1996-12-19
Abstract: In a semiconductor memory device a first signal containing address signals RAi, CAi, a read/write command OP and input data D is received. The address signals and input data are processed in accordance with an internal clock signal of a predetermined period generated by an internal oscillator when the read/write command indicates a write cycle. The address signals are processed in accordance with the internal signal and a second signal is generated to indicate a data output when the read/write command indicates a read cycle.
Patent GB-2322521-A (GB)
Title: Method of Providing Access to First and Second Communication Networks
Inventor: HAYNES CHRIS
IPC: H04B7/185
Filed: 1997-02-24
Abstract: A GSM cellular telecommunications network arrangement comprises mobile switching centres (MSC 8A,8B,8C) controlling base stations (14) defining cells (16) forming respective geographical areas (18A,18B,18C). To provide increased coverage, a satellite communication network (30,32) is also provided, of which at least some of the subscribers ("dual-mode subscribers") are also subscribers to the GSM network arrangement. A registration request from an MTU (17d) operating in the satellite network is received by an MSC (8D). It is passed to an access node (40). This carries out a check to verify whether the subscriber making the request is in fact a dual-mode subscriber. Only requests from dual-mode subscribers are then passed to the appropriate HLRs (22A,22B,22C) to initiate the registration and authentication process which is carried out otherwise than through the access node (40). The HLRs (22A,22B,22C) therefore do not have to be modified in any way to check for dual-mode subscribers; this checking is carried out by the access node (40). The second network may also be a WLL, a banking service network, or a second cellular telephone network.
Patent GB-2319149-A (GB)
Title: Address look-up for communications network bridges
Inventor: MORAN PAUL JAMES
IPC: G06F17/30
Filed: 1997-10-29
Abstract: A search apparatus and method for establishing efficiently whether a particular number, eg a MAC address, is stored in a database 78, eg in a communications network bridge 70. The search is conducted stepwise on the basis of portions of the number, until one or zero match is found in the database. In the event that one match is found, a final confirmation is made that the whole of the number located and the number searched for are the same. This provides an efficient way to search among a subset of possible very large numbers. The bridge controller 74 transmits received communication packets to the port(s) 72 a-e necessary for them to reach their intended destination(s), once the search engine 76 has retrieved the relevant MAC address and associated port from the database.
Patent GB-2324569-A (GB)
Title: Lock cylinder core retention
Inventor: WEISSENBORN CHRISTIAN
IPC: E05B9/08
Filed: 1998-02-23
Abstract: A furniture cylinder lock comprises a housing 10 secured to the back plate 9 of a furniture fastening mechanism 4, and a core 18 which has a journal 21 for operating the mechanism when the core is turned by a key. The housing has increased diameter portions 12, and 16 respectively receiving a front flange 19 of the core and for holding a fixing ring 27. When the core is inserted into the housing projections 24 on the journal displace an inwardly directed conical portion 35 of the fixing ring 27 to move behind a stop face 33 thereof to resist core removal.
Patent GB-2325885-A (GB)
Title: Printing plates
Inventor: GATES ALLEN PETER
IPC: G03F7/07
Filed: 1998-06-03
Abstract: A lithographic printing plate precursor comprises a grained and anodised aluminium substrate coated with a metallic layer, preferably a silver layer, on top of which is applied a transparent cover sheet or layer of material. Imagewise exposure of the precursor by means of a high intensity laser beam allows for the direct provision of press ready plates showing high image quality, good press properties and high durability on press without the requirement for the use of intermediate film and developer chemistry. The transparent cover sheet or layer of material enables the loosely bound debris which is produced in the exposed areas on imagewise exposure to be trapped, and thereby prevented from being released to the atmosphere. Specified sheets are polyolefines and polyethylene terephthalate and specified layers are polyvinyl alcohol, polyvinyl phosphonic acid, polyethylene glycol, gum arabic and carboxymethylcellulose.
Patent GB-2329405-A (GB)
Title: Cutting elements providing constant superabrasive contact area
Inventor: SCOTT DANNY EUGENE
IPC: E21B10/573
Filed: 1998-09-03
Abstract: Cutting elements with a circular cutting face, or other cutting element exhibiting a non linear cutting edge, providing a relatively constant superabrasive area in contact with the formation, for example, from about 5% diametrical wear to in excess of about 30% diametrical wear in the case of a circular cutting element, measured across the cutting face. The superabrasive table of the cutting element 102 is configured internally, externally, or both to vary in depth radially and laterally, as required, so that an increase in width of the contact or wear flat area with the formation and the variation in table depth as the cutting element wears are substantially offsetting. The rate of penetration of a drill bit so equipped may thus be maintained at a desirable magnitude without a substantial increase in weight on bit as the cutting element wears, since the superabrasive contact area is maintained relatively constant. Several embodiments of the invention are described which maintain the superabrasive contact area by means of decreasing said area in one of at least width and thickness, as the cutting element is worn.