baber/WOPTO huggingface dataset:
Patent GB-2290150-A (GB)
Title: Doped optical waveguide amplifier
Inventor: LAMING RICHARD IAN
IPC: H01S3/06
Filed: 1994-04-22
Abstract: The core of a low phonon energy glass optical fibre is doped with trivalent Dysprosium ions for application as an efficient optical fibre amplifier operating around 1.3  mu m. The device utilises the transition <6>H9/2-<6>F11/2 to <6>H15/2. The low phonon energy (high quantum efficiency) glasses include mixed halides, chalcogenides and chalcohalides. Improvements in efficiency can be achieved by co-doping of the fibre core with Eu<3+> and/or Tb<3+> ions. <IMAGE>
Patent GB-2292088-A (GB)
Title: Fold-away golf bag stand
Inventor: HSIEH CHI-CHUNG
IPC: A63B55/57
Filed: 1994-08-04
Abstract: A fold-away golf bag stand includes three mounting frames (2, 28, 12) fixed to a golf bag (1, 3) at different elevations, and two legs (25, 25') bilaterally pivoted to the top mounting frame (2). The legs have respective lugs (23 or 23') near the top, a spring (24) connected between the lugs (23, 23') of the legs (25, 25'), and two slides (251, 251'). Two links (27, 27') are respectively pivotally connected between the intermediate mounting frame (28) and the slides (251, 251'). A supporting frame (26, 26') has two opposite ends respectively pivotally connected to the lugs (23, 23') of the legs (25, 25'), and a middle part releasably fastened to a hook (121) on the bottom mounting frame (12). <IMAGE>
Patent GB-2279084-A (GB)
Title: Fire and heat resistant materials
Inventor: HORROCKS ARTHUR
IPC: D06M101/16
Filed: 1993-03-19
Abstract: A flexible fire and heat resistant material comprising an intimate mixture of organic intumescent filler and organic fibres adapted to char intensely within the temperature range of 200 DEG C to 500 DEG C. The added presence of inorganic fibre components enhances the structural integrity of this structure both during char formation up to 500 DEG C and at higher temperatures up to 1200 DEG C once char oxidation takes place.
Patent GB-2285377-A (GB)
Title: Method for generating a subpixel mask for anti-aliasing in a computer graphics system and apparatus thereof
Inventor: CHO JUN-HYOUNG
IPC: G06T11/20
Filed: 1994-09-23
Abstract: In a computer graphics system, a method for generating a subpixel mask for polygon edges directly by an operation without using a look-up table, includes the steps of forming subblocks by dividing a pixel into n subpixel rows or columns (Figs. 4B or 4A respectively) depending on the slope of the polygon edge, calculating subblock coverage (h1---) which is a distance from the pixel boundary to the intersection point of n subblocks and polygon edge, and by subdividing the rows or columns generating an n x n subpixel mask depending on the calculated subblock coverage. In an apparatus using the method, edge-generated aliasing is removed. <IMAGE>
Patent GB-2284668-A (GB)
Title: Detecting glass breakage
Inventor: ZHEVELEV BORIS
IPC: G08B13/04
Filed: 1994-12-01
Abstract: The method comprises the steps of sensing the sound produced by a possible glass breakage event and producing an electrical signal characteristic of the sound, producing a plurality of frequency band-limited signals from the sound signal, determining when a normalised rate-of-rise of a plurality of the band-limited signals is above a respective value and analysing the sound signal further only if a plurality of the band-limited signals have a normalised rate-of-rise greater than their respective values during a specified time period. Various characteristics of the sound in three frequency ranges are used to determine the authenticity of a breakage event. Each range is characteristic of one or more aspects of impact on glass or glass breakage. A variety of measurements and comparisons are performed on the signals, their integrals and derivatives either to validate an event or to exclude an event as a false alarm. <IMAGE>
Patent GB-2285175-A (GB)
Title: High electron mobility transistor
Inventor: MITSUBISHI DENKI KABUSHIKI KAI
IPC: H01L29/812
Filed: 1994-12-20
Abstract: An HEMT includes a very low impurity concentration InGaAs active layer (3), in which a two-dimensional electron gas is produced, disposed on a semiconductor substrate (1), a very low impurity concentration spacer layer (4) contacting the active layer at the first surface and comprising a material having an electron affinity smaller than the electron affinity of the material of the active layer 3, and a very thin InGaAs electron supply layer (5) having a high n type impurity concentration. In another arrangement the source and drain electrodes comprise layers of gold on tungsten silicide. The gate electrode 10 is a Schottley contact on the recessed, undoped AllnAs layer 6. <IMAGE>
Patent GB-2296568-A (GB)
Title: Strain gauge
Inventor: DAY ANDREW JOHN
IPC: G01M5/00
Filed: 1994-12-20
Abstract: Pipes 11 and 12 are attached to a connector sleeve 10 by passing electric current through helical wire coils 19, 20 on the inner surfaces of the sleeve ends to heat the wires 19, 20 to cause the plastics of the pipes and connector to melt. The wires 19, 20 are then each used as a strain gauge to monitor forces acting on the pipes and connector. <IMAGE>
Patent GB-2293270-A (GB)
Title: Surface mounting apparatus
Inventor: YI YUN HYUNG
IPC: B25J15/08
Filed: 1995-09-13
Abstract: Apparatus for surface mounting electronic components includes a tool body 30 which is detachably mountable on a head block H and an automatic tool changing assembly. The tool body is fixed to a plurality of fixing shafts 41 on which are fixed in order a change plate 31, an intermediate plate 32 and a guiding plate 33. The shafts act as a pressurising member 40 and is supported upwardly by an elastic member 60. A suction nozzle 52 is upwardly supported on a nozzle shaft 51 by an elastic member 70 the shaft engaging the guiding plate 33 and the intermediate plate 32. Aligning jaws 80 are provided which operate by a camming action in response to an up and down movement of the tool body. The automatic tool changing assembly comprises a plurality of cylinders 102 for upward and downward movement and which are connected to a support plate 101 and a second plurality cylinders for horizontal movement. The second cylinders move a receiver 110 which is supported by the support plate 101 and is capable of supporting the change plate 31 of a tool body T. The receiver carries a tool fixing device 120. <IMAGE>
Patent GB-2303241-A (GB)
Title: Preventing distortion of discs in disc drives
Inventor: JEONG WOO-CHEOL
IPC: G11B17/02
Filed: 1996-03-13
Abstract: A hard disk drive is disclosed which includes a frame, a spindle motor fixed to a frame, at least one hard disk (36, 37) inserted onto a hub (35) of a spindle motor, a clamp (39) locking the hard disks, a spacer (40) installed between the hard disks, a magnetic head and magnetic head driving portion, and a dummy disk (38) formed by an arrangement of a metal plate, a damping portion and a polyester film piled on top of one another (Fig. 4, not shown) wherein the dummy disk is disposed between the clamp and the hard disk. The hard disk drive has the dummy disk in the hard disk locking structure thereby improving the reliability of the hard disk by preventing distortion of the disk due to the clamping force.
Patent GB-2300257-A (GB)
Title: Method and device for determination of the albedo of particles
Inventor: SASSE CHRISTIAN
IPC: G01N15/14
Filed: 1996-04-25
Abstract: In a device for the determination of the albedo or light absorption of irregular-shaped particles, a particle is electrostatically charged and is positioned in contactless manner at or close to the centre 24 of an Ulbricht sphere 15 by means of an electric field; the particle is there illuminated with a measuring light (or infra-red) beam 20 passing through the sphere with defined intensity, defined beam cross-section and defined intensity distribution. The intensity of the particle-related diffuse radiation in the Ulbricht sphere is measured by means of a sensor 50, and the cross-sectional area of the particle illuminated by the measuring light beam is determined e.g. by projection on a photosensitive surface 70. The albedo of the particle is determined by comparison with the corresponding data for a known reference particle.
Patent GB-2312850-A (GB)
Title: Golf stance practice aid
Inventor: KAPPLER MICHAEL ROY
IPC: A63B69/36
Filed: 1996-05-07
Abstract: A golf stance practice aid comprises a base plate 1 with scale 2, foot positioning means 4,5 and an extendable ball positioning means 7,8 rotatable through a complete turn to allow for right and left hand use.
Patent GB-2300270-A (GB)
Title: Thermocouple probe
Inventor: STANSFELD JAMES WOLRYCHE
IPC: G01K13/02
Filed: 1992-10-30
Abstract: A thermocouple probe 10 suitable for use in a gas turbine engine comprises a thermocouple element which is coaxially arranged inside a protective sheath 16 provided with a flange 40. In order to reduce vibration of the probe when it is mounted in an aperture 30 in the casing 32 of a gas chamber 34, the flange so abuts the outer surface 38 of the casing that the longitudinal axis AA of the probe is angularly offset from the central axis BB of the aperture, and the outer periphery of the sheath 16 is in contact with the inner periphery of the aperture in two diametrically opposite and axially offset locations. As described the thermocouple element is resiliently supported in the sheath by a helical member (18, Figs. 1-3) which insulates the element from any deleterious vibrations induced in the sheath.
Patent GB-2301338-A (GB)
Title: A Handling System for Workpieces
Inventor: GALM KARLHEINZ
IPC: B25J9/02
Filed: 1996-06-10
Abstract: In a production island, a handling system is provided which serves for the feeding and removal of workpieces 3 to and from a machine 2 respectively. The handling system contains a storage device 7 with several storage locations for workpieces 3, stacks of workpieces, pallets of workpieces, or stacks of such pallets. The linkage to the machine is effected by a single handling device, in the embodiment, a gantry conveyance device 1. The workpieces are introduced without restacking directly from the storage device 7 into the machine 2 and are returned from the latter into the storage device.* Thus the stacking procedures are dispensed with, the availability of the machine is not restricted by the handling system and the whole production island can be set up in a space-saving manner. The gantry conveyance device can have one or two gripper arms 26, 27 and can have one gripper or two, reversible grippers (Figs 3-6). The gripper arms can be vertically movable, rotatable about their own axis or the grippers rotatable about an horizontal axis. The storage locations can be adjustable in height for ease of loading/unloading and removing/replacing by the grippers. * The storage device has a loading/unloading station (17, Fig 2) and at least two, spaced, transfer stations 18, 19. Workpieces are picked up from transfer station 18, machined and then returned directly to the transfer station 19.
Patent GB-961991-A (GB)
IPC: C07F5/04
Abstract: 961,991. Separation of trialkylborate-alcohol mixtures. UNITED STATES BORAX & CHEMICAL CORPORATION. March 14, 1961 [May 16, 1960], No. 9368/61. Heading C2C. Trimethyl borate or triethyl borate is separated from a mixture with methyl alcohol or ethyl alcohol respectively by adsorbing the alcohol from the mixture by means of a molecular sieve comprising crystalline sodium aluminium silicates, or an aluminosilicate produced by replacing sodium ions of a sodium aluminosilicate by calcium ions. Preferably the mixture of borate ester and alcohol is passed down a column containing the molecular sieve and the substantially pure ester is collected from the bottom of the column. When the molecular sieve is saturated with alcohol, it is regenerated by heating the column and the alcohol is volatilized and recovered in a receiving vessel. Continuous operation is possible using two or more columns in parallel. One column is used until saturated with alcohol, then the ester-alcohol feed stream is passed through the second column while the first is being regenerated, and so on.
Patent GB-2324535-A (GB)
Title: A composition and method for reducing noise in a liquid-cooling system
Inventor: ISHERWOOD ADAM
IPC: C09K5/08
Filed: 1997-04-25
Abstract: A composition for use in reducing noise in a liquid-cooling system of an engine, eg an automotive engine, comprising an organo-polymeric microfibril material insoluble in the cooling liquid of the liquid-cooling system. Preferably the microfibril material is contained in a carrier, which may be in the form of a liquid, a gel or a compressed tablet soluble or dispersible in the cooling liquid. Preferably the microfibril material is nylon or an aramid fibre, and is suspended in a water-glycol mixture.
Patent GB-2314449-A (GB)
Title: Assembly method, including soldering, for a head drum used in a digital VCR
Inventor: YANG YUN-WON
IPC: G11B5/53
Filed: 1997-06-06
Abstract: The method comprises the steps of:   i) tightly inserting a bearing assembly 110 into an upper drum 150 provided with a plurality of heads 151, the bearing assembly being rotatably fitted on a stationary shaft 113; ii) attaching the rotor 120 of a transformer to a bottom surface of a flange portion of the bearing assembly; iii) connecting winding coils 122 of the rotor transformer to the respective head 151 of the upper drum by soldering; and iv) tightly fitting a lower drum 140, having an inner bottom surface on which the stator of the transformer is disposed, on the stationary shaft in such a manner that there exists a predetermined gap between the rotor and the stator transformers.  The bearing assembly is fastened to the upper drum by a plurality of screws S fitting through the flange portion and into a bottom portion of the upper drum.
Patent GB-2325067-A (GB)
Title: Distress location beacon
Inventor: PASSMORE CHRISTOPHER
IPC: G08B5/00
Filed: 1997-06-18
Abstract: A personal hand held distress beacon consists of a body 13 encasing a balloon 12, which supports a light source 15. The balloon 12 is automatically ejected from its storage position in the body on removal of a retention pin 31, which releases a compressed spring 18. At the same time lighter than air gas is released from a container 32 to inflate the balloon 12 through a flexible tube 23. Once fully inflated the tube 23 automatically breaks at a weak portion 26. The balloon 12 then ascends to the height of an attached tether line 25. The light source 15 is controlled by a photocell 22 to activate at low ambient light levels and the balloon 12 is part transparent and part reflective to aid its visibility.
Patent GB-2331628-A (GB)
Title: Electrically heated water boiling appliance
Inventor: O'NEILL ROBERT ANDREW
IPC: A47J27/21
Filed: 1997-11-24
Abstract: An electric water boiling appliance, for example a jug or kettle, has a steam sensor 1 associated with a manually operable on/off switch of the appliance for switching the appliance off when water boils in the appliance. The appliance further includes an actuator 3 on the bottom of the appliance and an interconnection between the actuator and the on/off switch which has the sole function of switching the appliance off in the event that it is set down in a switched on state. This arrangement, which is inoperable to switch the appliance off if it is picked up when it is in a switched on condition and, with the appliance switched off by virtue of the actuator operation, is furthermore such that the appliance may be switched on or off regardless of whether or not it has been set down, provides all necessary protection without any complication.
Patent GB-2332874-A (GB)
Title: Manufacturing a foam board
Inventor: ROCHEFORT MALCOLM
IPC: E04C2/296
Filed: 1997-12-30
Abstract: A rigid polymeric insulating foam board is manufactured by forming a panel sandwich comprising a lower substrate 1, an upper substrate 2, and foam layer 3 between the substrates 1, 2. At or just after the foam gel time and before the foam tack-free time the upper substrate 2 is punctured by a spiked roller 20 to provide a pathway for gas release from the panel. Air streams are applied to substantially remove dirt and grit particles from the foam receiving faces of the substrates 1, 2. The foam may be laid down across at least 10% of the width of the substrate 1 by a lay down head in the shape of a fish tail. A stacking system for stacking the foam boards is also described.
Patent GB-2336666-A (GB)
Title: Solid fuel heating device
Inventor: DAVIS HELEN
IPC: F24B5/02
Filed: 1998-04-24
Abstract: A heating device 2, for example a stove, capable of burning a variety of solid fuels including, for example, wood and coal, has a fire box 4 with a base grate 16, a front wall including door 10, a rear wall 6, and an upper deflector or baffle plate 26 between the fire box and an exhaust gas outlet 24. Supplementary combustion air is supplied to the fire box 4 through a removable manifold 34 which is an horizontal tube sitting on a wall or lining 28 of removable fire bricks in front of the rear wall 6. The baffle 26 can rest on the manifold 34. Opposite ends of the manifold tube 34 are closed, but the tube has air outlet openings in its front wall 40 and on its opposite rear wall one or more open ended air inlet pipes 44 each disposed in a corresponding opening in the rear wall 6 of the firebox.
Patent GB-2342147-A (GB)
Title: A ball for use in a furnace
Inventor: HENDERSON ALEXANDER CAMERON
IPC: F27D99/00
Filed: 1998-10-01
Abstract: A furnace ball (13) improves the combustion performance in for example the furnace (10) of boiler apparatus (1). The furnace ball (13) is of refractory material such as a ceramic and has a plurality of holes or through-bores to allow combustion air or gases to pass through the ball to the fuel in the furnace bed with relatively low resistance. By using a plurality of these balls (13) in the bed a medium is provided encouraging the combustion process to continue in the bed. The furnace (10) of the boiler apparatus (1) is preferably of the down draught type and uses solid fuel, delivered from a supply (11/11A). The combustion air for the furnace (10) is heated by heating means (23-28) using another fuel, specifically oil or gas: the heating gas produced by said second fuel can flow in contra-flow to the passage of the combustion air flowing to the furnace (10). The boiler (4) of the boiler apparatus (1) preferably utilises water tubes (5) and cleaning of combustion dust and other particles from the tubes (5) is achieved by a cleaning arrangement wherein steel balls from a supply means (21) are caused to fall into the combustion gas passages between the tubes (5) and be deflected by deflectors on the tubes so that the balls strike the tubes (5) to dislodge the combustion particles etc thereon. The steel balls (20) can be magnetic to assist subsequent collection.
Patent GB-2332406-A (GB)
Title: Automobile chassis and steering mechanism
Inventor: GREENLY RAYMOND HENRY
IPC: B62D61/00
Filed: 1998-10-23
Abstract: An automobile has a chassis with wheels in an elongated kite shaped layout. The automobile is provided with a steering mechanism suitable for either right or left hand drive which transmits motion to the fore and aft steered wheels so that the vehicle can not only turn in a smaller circle but also have lower ground clearances and centre of gravity, improved stability, better roadholding, cabin capacity and passenger protection.
Patent GB-2329636-A (GB)
Title: Chiral dopants
Inventor: PARRI OWAIN LLYR
IPC: C09K19/58
Filed: 1997-06-18
Abstract: The invention relates to chiral dopants of the formula (I): R<1>-X<1>-MG<1>-G-MG<2>-X<2>-R<2>. The invention also relates to liquid crystalline materials comprising at least one china dopant of formula (I) and optionally at least one polymerizable mesogenic compound. The invention furthermore relates to the use of such liquid crystalline materials for the preparation of polymer films with a chiral liquid crystalline phase, for active and passive optical elements or colour filters and for liquid crystal displays, for example STN, TN, AMD-TN, temperature compensation, guest-host or phase change displays, or polymer free or polymer stabilized cholesteric texture (PFCT, PSCT) displays. The invention also relates to cholesteric liquid crystal displays comprising liquid crystalline materials comprising chiral dopants of formula (I) and to polymer films with a chiral liquid crystalline phase obtainable by (co)polymerizing a liquid crystalline material comprising at least one chiral of formula (I) and at least one polymerizable compoud.
Patent GB-2330733-A (GB)
Title: Routing signals through a wireless communication system comprising a network of linked nodes
Inventor: HUGHES PHILIP THOMAS
IPC: H04L12/28
Filed: 1997-12-18
Abstract: A wireless communication system comprises a network of nodes 2 connected by point-to-point links 3 using highly directional antennae. Each node determines if a received signal includes information for another node and if so, a signal including the information is transmitted to another node. Information is routed or hopped from node to node until it reaches its destination node. The nodes may be subscriber stations or repeaters. Various network topologies are described including fully interconnected, linear chain, tree, lattice, hypercube and combinations. Nodes may be linked to other nodes which are not nearest neighbours. Multiple paths for signal transmission can be chosen each consisting of an even number of links to maintain synchronisation of transmission and reception between nodes. A copy of the information may be sent on a different path or the information may be split between two paths. Traffic is routed by addresses added at each node or by a central system controller, and may be determined by congestion or node availability. Each link from a node may be associated with one or more time slots for transmission or reception. At least one link of a node may use a different frequency to prevent interference.
Patent GB-2335498-A (GB)
Title: A method of leak testing an assembled plate type heat exchanger
Inventor: SHAW JONATHAN GRAHAM
IPC: G01M3/04
Filed: 1998-10-08
Abstract: A method of positively locating the source of leaks in the heat transfer surface area of the plate heat exchanger between separate product and service fluid paths arranged in an intimitate heat exchange relationship is disclosed. The method comprises: circulating a solution through one fluid path of the exchanger, the solution consisting of solvent with appreciable vapor pressure under the chosen test conditions; providing a gas flow across the other fluid path of the exchange surface by means of forced or natural convection; applying a positive pressure differential between solution and gas stream; and detecting visually the location of deposited solutes on or around the other fluid path.
Patent GB-2347863-A (GB)
Title: Adhesive pads for ostomy bags
Inventor: MILLS BARRIE THOMAS
IPC: A61F5/443
Filed: 1999-08-02
Abstract: A deformable pad 1 for removably securing an ostomy bag to the skin of a patient consisting essentially of a plastics film bonded to an adhesive material 3; the pad having an opening 7 for receiving stomal waste, the opening 7 being surrounded by a pliable unreinforced convex formation 5 on a bodyside face of the pad. Overlying the adhesive pad 3 a backing layer 9 may be provided and the bodyside surface of the adhesive may be temporarily protected by release liner 15.
Patent GB-2344652-A (GB)
Title: Surface sampling device
Inventor: RABENECKER HORST
IPC: G01N1/38
Filed: 1999-08-12
Abstract: A surface is wiped or smeared to obtain a sample for analysis using a device with an absorbent material 2 disposed at the end of a sleeve 1 to gather the sample. A moveable piston 4 is located at the other end of the sleeve and when it's rod 3 is moved, a liquid held between the piston 4 and a closure 7 passes through the closure e.g. a membrane, to the absorbent material. The liquid may be a rinsing, diluting or conditioning solution which conveys the sample from the absorbent to a detector which is typically an analytical test strip.