baber/WOPTO huggingface dataset:
Patent GB-2319677-A (GB)
Title: Discharge lamp starting and operating circuit
Inventor: LAKIN RICHARD ANTHONY
IPC: H05B41/04
Filed: 1996-11-19
Abstract: To start a discharge lamp 20, particularly an arc discharge lamp (eg. metal halide), the lamp is initially supplied with AC at a first frequency to start the lamp, and then the lamp is operated at a lower second frequency. Separate high frequency and low frequency inverters may be used to provide the first and second frequencies, but preferably a switched frequency inverter is used to provide both frequencies. A continuous transition between the two frequencies may be used rather than a switched transition. The frequency change may be effected after a predetermined time, or in response to sensing that the lamp has fired. To increase the starting voltage, the lamp 20 may be connected to an L-C series resonant circuit L1, C1, resonant at the first frequency, and a transformer T1 may also be provided. The first frequency is preferably at least 5, more preferably at least 10, 50 or even 100 times the second frequency. The first frequency may be in the range 20-40 KHz (eg. 22-25 KHz), and the second frequency may be in the range 50-200 Hz (eg. 120 Hz). Use of a starting frequency which higher than (preferably at least double) the rated maximum operating frequency, allows an arc discharge lamp to be started with a voltage which is lower than (preferably less than half) the rated minimum striking voltage - eg. at 20 KHz, a strike voltage as low as 3KV is effective to ignite a lamp with a manufacturer specified strike voltage of 15KV or more.
Patent GB-2320519-A (GB)
Title: A stay for a window
Inventor: BAKER NEIL MARTIN
IPC: E05D15/46
Filed: 1996-12-20
Abstract: A window stay comprising a plurality of links 5, a stay arm 9 having an end member 27 and a base member 3 with an end cap 11 for receiving the end member 27 when the stay is closed, wherein the end cap 11 defines a channel 21 along which the end member 27 progresses during closing of the hinge. The channel is defined by an end block 13 and a guide block 15 and becomes narrower in the stay closing direction. The end member 27 may comprise a guide rail having uniform cross section, and may be integral with an extension 29 which acts as a washer between the link 5 and the arm 9. The stay provides more controlled opening and closing of the stay and may prevent sash sag.
Patent GB-2316965-A (GB)
Title: Hydro-mechanical multi string cutter
Inventor: FLANDERS BRUCE A
IPC: E21B29/00
Filed: 1997-02-24
Abstract: A cutting tool (10), for use in a wellbore, has a mandrel (12), with a plurality of ramps (20) formed thereon, and a slidable knife body (14) that pivotally mounts (28) knife blades (16). The knife blades are positioned on the ramps between vertical abutment surfaces (48). A pressure chamber (30) is formed between the knife body and the mandrel. A flow restrictor creates fluid back pressure allowing fluid from the work string to be directed through ports (52) to the pressure chamber. The pressure increase causes the knife body to be driven against the bias of the helical spring (42), causing the lower ends of the knife blades to pivot outwardly over the ramps. As the mandrel is rotated, the knife blades rotate and cut into the downhole material. The tool may be used to cut a plurality of wellbore tubing or casings and then support the cut sections as they are removed, without the use of additional tools.
Patent GB-2323597-A (GB)
Title: Sealing material for use in a valve for an aerosol inhaler
Inventor: THOMAS JONATHAN HOWEL
IPC: B65D83/14
Filed: 1997-03-26
Abstract: The present invention provides a seal for a valve for use in a pharmaceutical metered dose aerosol inhaler device, which seal is formed from a mixture comprising a cross-linked elastomeric material and one or both of a thermoplastic material and a thermoplastic elastomeric material.
Patent GB-2324693-A (GB)
Title: Vapour barrier in a radiant electric heater
Inventor: MCWILLIAMS KEVIN RONALD
IPC: H05B3/74
Filed: 1997-04-12
Abstract: An electric heater particularly of radiant form, has a bass (2, 2A) of microporous insulation material having supported thereon or adjacent thereto at least one heating element (4). A vapour barrier (6, 6A), particularly a barrier to water vapour, is provided between the at least one heating element and the base. The vapour barrier (6, 6A) is provided in sheet form, such as of mica, or in the form of one or more films, layers or coatings on the surface of the base. Alternatively the vapour barrier is provided by impregnating or enriching material of a surface of the base (2, 2A) with a suitable material.
Patent GB-2325062-A (GB)
Title: Data object management
Inventor: BUTLER NICHOLAS DAVID
IPC: G06F9/44
Filed: 1997-05-06
Abstract: An interactive voice response (IVR) system 10 comprises many different application objects which combine to deliver a voice application. These objects typically include IVR programs or scripts, prompts 20 or voice segments 22 and server scripts or programs 18 for communicating with external systems or databases. The grouping of the application objects becomes more important in the later stages of a development process. There is described a method of grouping data objects having different data categories, such as programs, scripts, prompts or voice segments, in an application processing system. The method comprises associating a collection of such data objects with a group; arranging them into sub-groups within the group, where each sub-group corresponds to category of the data object (scripts, prompts, etc); and creating a graphical representation of the sub-groups using a graphical user interface.
Patent GB-2315382-A (GB)
Title: Video apparatus having function of recalling a previously stored still picture while displaying a moving picture
Inventor: SEO KYOUNG-RYOUL
IPC: H04N7/18
Filed: 1997-07-16
Abstract: An imaging apparatus comprises a charge coupled device 23 for converting incident light into an image signal, a sample-and-holder 25 for sampling the image signal output by the charge coupled device, an analog-to-digital converter 27 for converting the sampled analog signal into a digital signal, a still image path 29 for transmitting a still picture signal from the analog-to-digital converter, a moving image path installed independently of the still image path, for transmitting a moving image signal from the analog-to-digital converter, and a digital signal processor 31 for processing digital signals transmitted via the still and moving image paths. The still image path includes at least one frame memory.
Patent GB-2313401-A (GB)
Title: A locking device
Inventor: MAPLE PETER MARK
IPC: B65D19/06
Filed: 1996-01-29
Abstract: The invention relates to a locking device (1), comprising a housing (2), a bolt (3) moveable from a first position to a second position in the housing (2) and detent means (4) adapted to retain the bolt (3) in each of the two positions. The device (1) is useful in pallets for transporting goods, to releasably secure in place demountable side walls.
Patent GB-2316411-A (GB)
Title: Nucleic Acid Sequencing Gels
Inventor: HARPER DAVID L
IPC: C08L5/00
Filed: 1994-09-01
Abstract: A method for sequencing nucleic acids in which the gel medium for electrophoresis comprises a polysaccharide, preferably agarose, in the presence of denaturing agents.
Patent GB-2329550-A (GB)
Title: Transporting multi-protocol datagrams over an asynchronous virtual channel
Inventor: BRUECKHEIMER SIMON DANIEL
IPC: H04L12/70
Filed: 1997-09-22
Abstract: Point-to-Point Protocol (PPP) traffic is transported over an asynchronous link by encapsulating the traffic in ATM Adaptation Layer 2 (AAL2) minicells and transporting the minicells in a single virtual circuit. Each minicell may vary in size from 1 to 64 octets and forms the payload of a fixed length ATM cell. Minicells from a number of users can be multiplexed onto the same virtual circuit to make better use of the available bandwidth. The use of AAL2 minicells reduces the number of virtual channels required, simplifies the encapsulation of PPP datagrams and improves the efficiency of encapsulation.
Patent GB-2324400-A (GB)
Title: Liquid crystal displays
Inventor: BUDD RUSSELL ALAN
IPC: G02F1/1362
Filed: 1998-04-02
Abstract: A method and structure for a display with reduced size pixels retains the transmissive approach which enables continued use of the least expensive transmission optics available. Back-end-of-the-line vertical cells are built on top of the row and column x, y lines of the pixels. In a PDLC type display embodiment each vertical cell is filled with PDLC which operates in a normally black mode known as the PDLC reverse mode. When the pixel control voltage is set ON, the liquid crystal is perpendicular to the light path resulting in a light pass through providing a bright state. When the control voltage is set OFF, the liquid crystals are randomly oriented, only the scattered light goes through the cell, so the pixel is in its OFF state. PDLC used here has two advantages. Firstly, the PDLC requires no rubbing. It is difficult to rub individual cell walls. Secondly, the use of both polarisations by the PDLC increases its luminous efficiency. Various embodiments are described for implementing vertical active electrodes and common ground electrodes. Advantages are described for employing the vertical electrodes with various implementations of a hidden storage capacitor.
Patent GB-2323152-A (GB)
Title: Temperature controlled chuck for vacuum processing
Inventor: HEIMANSON DORIAN
IPC: C30B23/02
Filed: 1996-11-14
Abstract: A temperature controlled chuck (20) includes a heating unit (24) and a cooling unit (34). A first cavity (30) separates the heating unit (24) from a wafer substrate (18), and a second cavity (50) separates the cooling unit (34) from the heating unit (24). A first fluid deliver system (60) conducts fluid to the first cavity (30) to facilitate exchanges of heat between the heating unit (24) and the substrate (18). A second fluid delivery system (70) conducts fluid to the second cavity (50) to facilitate exchanges of heat between the heating unit (24) and the cooling unit (34). A control system (90) raises the temperature of the substrate (18) by increasing power to the heating unit (24) and by evacuating fluid from the second cavity (50) and lowers the temperature of the substrate (18) by reducing power to the heating unit (24) and by conducting fluid to the second cavity (50).
Patent GB-2325851-A (GB)
Title: Modular vehicle windscreen washer/wiper unit
Inventor: SMITH PETER MUNROE
IPC: B60S1/04
Filed: 1998-05-26
Abstract: The unit comprises a frame member 5 on which are mounted the wiper arms 11 and linkage 8, the wiper drive motor 7, the wiper blade assemblies 67, a washing liquid reservoir 6, spray nozzles for jetting the washing liquid onto the windscreen [not shown], a pump [not shown] for delivering the liquid from the reservoir to the nozzles, and means for connection to the vehicles electrical supply. The whole assembly is unitary and can be mounted as one piece onto the vehicle immediately below a lower edge of the windscreen. In a preferred embodiment the frame has a cover member 9 through which drive shafts for the wipers pass. This cover also provides for a 'depressed park' position of the wiper blades when not in use or when the unit is not installed in the vehicle. The spray nozzles may be on the wipers themselves or, when used, on the cover. The support member may be in the form of an elongate bar or tubular member instead of the tray like member shown in figure 1.
Patent GB-2329288-A (GB)
Title: Frequency synthesizers
Inventor: PATTERSON JEFFERY S
IPC: H03L7/183
Filed: 1998-06-08
Abstract: A variable frequency synthesizer uses a phase prediction signal to enable integer division in the feedback path of a phase lock loop to provide an output signal at a rational frequency multiple of an applied reference signal. The output signal provided by a variable frequency oscillator 12 is frequency divided and phase compared at 16 to the reference signal. The phase comparison produces a predictable, time-varying phase difference signal based on a known frequency difference between the output signal and the reference signal. The phase prediction signal cancels the predictable phase difference signal and isolates a phase error signal used to adjust the frequency of the oscillator to precisely equal the rational frequency multiple of the applied reference signal when the phase error signal is minimised. In a digital version of the frequency synthesizer (Fig.3 not shown) most of the components apart from the oscillator 12 and the loop filter 22 are formed by digital circuitry.
Patent GB-2329407-A (GB)
Title: Methane production from a subterranean carbonaceous formation using an aqueous oxidising solution to promote cleat formation
Inventor: RIESE WALTER C
IPC: E21B43/26
Filed: 1998-09-03
Abstract: A method for increasing the production of methane from a subterranean carbonaceous formation containing clay minerals by injecting an aqueous oxidizing solution into said formation through an injection well. The oxidising agent contains at least one of the group comprising peroxide, ozone, oxygen, chlorine dioxide, sodium hypochlorite, water soluble metallic salts of hypochlorous acid, perchlorate, chlorate, persulfate, perborate, percarbonate, permanganate, nitrate and combinations thereof. The oxidising agent stimulates the formation of cleats or fractures by chemical reaction with the organic constituents of the formation and the rate of methane desorption from the formation increases as oxidation of carbonaceous material results in an increase in the free surface area of the cleats. Sodium or potassium salts are preferred. The methane may be recovered through the same well used for injecting the oxidising solution or through a separate recovery well. The oxidant is normally shut-in the well for a selected period, at least 24 hrs, before methane collection begins. The oxidising solution may be injected into the well in combination with a fracturing fluid or at some time period after the fracturing fluid has been injected.
Patent GB-2341401-A (GB)
Title: Table - tent
Inventor: PRITCHARD SUSAN MARY
IPC: E04H15/00
Filed: 1998-09-08
Abstract: A fabric play - space is in the form of a "table tent", i.e. fabric C themed to represent a building, vehicle or vessel is supported in the manner of a tent using an existing indoor or outdoor table A as a "frame". Tabs of VELCRO (RTM) may be used as at D for attachment; the "tent" may double as a tablecloth or may be folded for storage.
Patent GB-2325928-A (GB)
Title: Apparatus for manufacturing erbium-doped optical fibre preform
Inventor: YANG JIN-SEONG
IPC: C03B37/018
Filed: 1997-03-27
Abstract: Apparatus for making an erbium-doped optical fibre preform comprises a clamping chuck 24 for clamping a quartz tube 10 and means for introducing heated gas 20 (eg O 2 ) into the quartz tube. The chuck can rotate the quartz tube which may be connected to the chuck via a connecting tube 22. The heat source 26 may be an oxygen/hydrogen burner. The heated gas is passed through the quartz tube to dry the solution containing erbium which has been absorbed by the quartz.
Patent GB-2330091-A (GB)
Title: Method and means for coating medical cannulas
Inventor: SPALLEK MICHAEL
IPC: A61L31/10
Filed: 1998-10-05
Abstract: Medical cannulas are typically provided with a silicone coating to improve incision performance. In order to produce a thin, continuous and even coating layer, silicone oil is provided at one side of an elastic foil and the foil is penetrated by the uncoated cannula from an opposite side. During this operation the cannula is wetted by the silicone oil. During withdrawal of the cannula from the foil, excess silicone oil is removed from the cannula and an even, particle-free thin coating which has no bulge- or bead-forming tendency during incision is obtained. Subsequently, the silicone coating is dried.
Patent GB-2331204-A (GB)
Title: Alteration of the orientation of data on a display
Inventor: KOBAYASHI FUMIYUKI
IPC: H04M1/72403
Filed: 1998-11-05
Abstract: The orientation at which data is displayed on portable terminal device is altered by detecting where the device is being held by a user. Pressure sensors or photo cells along two edges of the device may be used to alter the orientation by 90. The orientation of data on the display may also be altered according to which function is being used or by operating a switch. Alternatively the device may have a plurality of displays at different orientations which may be used according to the way in which the terminal is being used. The portable terminal device may be a selective call receiver or a mobile telephone.
Patent GB-2347803-A (GB)
Title: Digital-to-analogue conversion circuits
Inventor: GRAHAM WILLIAM MARK
IPC: H03M3/02
Filed: 1999-03-12
Abstract: A digital-to-analogue conversion circuit has a wave-shaping circuit 12 generating a return-to-zero (RTZ) analogue reference signal and a synchronisation logic circuit 13. The synchronisation logic circuit 13 synchronises a digital input signal and the RTZ analogue reference signal so that transitions between discrete binary levels in the digital input signal occur when the RTZ analogue reference signal is zero. The synchronised signals are combined in a DAC 10 to produce an analogue output.
Patent GB-2352349-A (GB)
Title: An interactive theatre
Inventor: STEENSON JOHN
IPC: H04N9/12
Filed: 1999-04-07
Abstract: The present invention relates to venues for events, particularly but not exclusively, to venues for public sporting events. A theatre is provided for communicating to an audience, in real time, an event occurring at a location remote from said theatre, said theatre comprising means for communicating to an audience, in real time, an event occurring at a location remote from said theatre, characterised in that said theatre further comprises means for communicating reaction of said audience to the location of the remote event. Thus, a theatre according to the present invention allows an audience to see and hear an event (e.g. a football match) occurring at a remote location and further allows the audience to communicate its reaction to the circumstances of the event to the location of the event.
Patent GB-2355247-A (GB)
Title: Air bag elevated tipping trailer
Inventor: HAYWARD ALAN
IPC: B60P1/16
Filed: 1999-08-10
Abstract: A tipping trailer has a body 1 which tilts relative to the chassis 14 by means of inflating an airbag 8 between the chassis 14 and body 1 with the exhaust gasses of the host vehicle by use of a connector 4 attached to the exhaust pipe 11. The body 1 is releasably secured at the front end by means of a catch 10 and hinged at the rear by means of a pivotable attachment 2. The lifting airbag is contained in a split chamber 9 which has an air hose 3 passing through the split chamber 9 into the airbag 8. The hose 3 runs from the airbag to the front of the trailer and is interrupted with a one way valve 5 and has a rubber connector 4 to allow it to attach to the exhaust pipe 11 of the host vehicle as the exhaust gasses pass into the lifting airbag 8. The body 1 is raised relative to the chassis 14. By opening the one way valve 5, the pressure is released from the lifting bag 8 therefore lowering the body 1 relative to the chassis 14.
Patent GB-2345137-A (GB)
Title: A system and method of fluid analysis in a hydrocarbon borehole
Inventor: GOODWIN ANTHONY ROBERT HOLMES
IPC: E21B49/08
Filed: 1999-12-10
Abstract: Acoustic energy is emitted into the production fluid downhole at a level which causes cavitation and thus bubbles in the fluid. The pressure associated with the bubbles point is determined using the level of emitted acoustic energy. An acoustic transducer can be installed either semi-permanently or permanently downhole in the well. The bubbles in the fluid can be detected by sensing variations in impedance of the acoustic transducer, and the level of emitted acoustic energy can determined by measuring the electrical energy used to drive the transducer. A control system for a hydrocarbon well is also disclosed (Fig.3). A control valve system (214) is used to control the flow of fluid being produced by the well. A real time sensor (220) is provided downhole and is used to make real time measurements of phase characteristics of the fluid. A controller (210) is used to control the valve system so as to reduce the risk of undesirable phase transitions in the fluid based on the real time measurements made by the sensor. The sensor is preferably as described above. The controller determines the level of acoustic energy emitted into the fluid, and also determines the pressure associated with a phase transition using the level of emitted acoustic energy.
Patent GB-2341782-A (GB)
Title: Environmentally friendly chewing gum bases
Inventor: WEISHENG LI
IPC: A23G4/06
Filed: 1997-06-25
Abstract: Chewing gum bases, and resultant chewing gun's, that are environmentally friendly are provided. The chewing gum base comprising approximately 3 to about 99 % by weight poly(lactic acid) copolymers selected from the group consisting of poly(lactic acid-dimer-fatty acid-oxazoline) copolymers and poly(lactic acid-diol-urethane) copolymers.
Patent HU-T69006-A (HU)
Title: Preprinted retroreflective highway sign and method for making the sign
Inventor: PRICONE ROBERT M
IPC: B32B27/18
Filed: 1992-04-15
Abstract: A retroreflective unitary laminate material having an acrylic layer on which a sign legend is printed and which is covered by an ultraviolet absorbent overlay that has poor affinity for paint and low surface tension thus protecting the printed sign from deterioration due to weathering and enabling the sign to be readily cleansed without damaging the printed signs, and minimizing water beading on the sign front face.
Patent HU-T73280-A (HU)
Title: Molded cladding for building structures
Inventor: DE ZEN VITTORIO
IPC: E04D3/363
Filed: 1994-02-02
Abstract: PCT No. PCT/CA94/00052 Sec. 371 Date Jul. 27, 1995 Sec. 102(e) Date Jul. 27, 1995 PCT Filed Feb. 2, 1994 PCT Pub. No. WO94/18412 PCT Pub. Date Aug. 18, 1994A molded cladded panel comprises on the underside thereof a bearing surface formation for bearing on an underlying support surface and latches for latching the panel to an underlying support surface, the panel having a profile configured to provide a desired appearance rising above the bearing surface formation, a nib formed on the profile for interfitting with adjoining panels whether in end-to-end or side-by-side relation, and a latched keeper member for latching engagement with the panel latches.
Patent HU-T76152-A (HU)
Inventor: VEREB ISTVAN
IPC: H02G1/08
Filed: 1995-11-14
Abstract: A találmány tárgya: kábelek csővezetékben való gyors áthúzására szolgáló eljárásra és olyan ezen eljárás megvalósításra szolgáló berendezés. A találmány szerinti eljárás lényege, hogy csőgörényhez huzalt rögzítünk, a csőgörényt csővezeték egyik végében helyezzük el, és atmoszférikus nyomásúnál nagyobb nyomású gázt állítunk elő, amelyet bevezetünk a csővezetékbe, a csővezeték másik végén megjelenő csőgörényt a csőből eltávolítjuk, a huzal rögzítését megszüntetjük, a huzalhoz kábelt rögzítünk és a huzalt a csővezetéken visszahúzzuk. A találmány szerinti berendezés lényege, hogy nagyszilárdságú, rugalmas huzalja(i) (5), ennek befűzésére szolgáló nyílásokkal ellátott, a cső ,(4) belső palástjához plasztikusan illeszkedő, plasztikusan rugalmas anyagú, célszerűen textília vagy hasonló anyagú, egyik végén zárt, másik végén nyitott, folyadékkal, célszerűen vízzel töltött csőgörénye (1) és légnyomásnál nagyobb nyomású gázt előállító berendezése, célszerűen kompresszora vagy kipufogó gázt előállító robbanómotorja van.
Patent HU-T73202-A (HU)
Title: Dishwasher agents with biodegradable builders
Inventor: ANDREE HANS
IPC: C11D17/00
Filed: 1994-06-20
Abstract: The invention concerns low-alkaline agents for use in dishwashing machines, the agents containing builders which are readily biodegradable. These readily biodegradable builders are copolymers of [meth]acrylic acid or [meth]acrylate, maleic acid or maleate and vinyl alcohol and/or vinyl acetate.