baber/WOPTO huggingface dataset:
Patent GB-2232741-A (GB)
Title: Belt tensioning apparatus
Inventor: GILL HUGH
IPC: F16H7/12
Filed: 1989-06-10
Abstract: A tensioning system for a drive belt (17) includes a tensioner (19) which is mounted to slide towards, and away from, the belt. An idler roller (22) is resiliently mounted in the tensioner (19) and is forced against the belt by means of one or more springs, for example (84 & 85) in Figure 8. The springs are arranged so that they increase the force applied by the roller to the belt as the tensioner is moved towards the belt until the force reaches a predetermined value, whereafter further movement over a limited range does not further increase the force. Various forms of suitable springs are disclosed which, when the applied force exceeds a predetermined value deform non-elastically. 
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Patent GB-2234956-A (GB)
Title: Skip loader
Inventor: OLIVER CHRISTOPHER PAUL FENWIC
IPC: B65G65/23
Filed: 1989-07-25
Abstract: A skip loader has a steel framed chassis 13 supporting a loading pan 12 at ground level which is raised by an hydraulic ram 15. The loading pan pivots on a bearing 14 mounted in the chassis frame and the contents are tipped into the rubbish skip 11. The loading pan then lowers to ground level to complete the operation. The loader can be clamped to the skip by a clamp (19) (Fig. 2, not shown), and a removable tow bar (Fig. 3, not shown) can be provided for towing. <IMAGE>
Patent GB-2221893-A (GB)
Title: Cable dispenser
Inventor: HAMM RICHARD
IPC: B65H49/32
Filed: 1989-08-10
Abstract: The cable dispenser comprises a frame 12A, 12B, 14 supporting a centre 18 on which a cable reel 25 is mounted for unwinding. A brake member carried by lever 14, pivoted at 20A, bears against the cable reel and/or the centre under the bias of spring 24 to prevent reel rotation. A first cable guide 22, 22 pivotal with lever 20 is spaced downstream from the centre in the direction of cable pay-off from the reel. A second cable guide 17, 17 is fixed on the frame at a location downstream of the first cable guide. The arrangement is such that a pulling action on the cable 27 passed through the first and second guides irrespective of the angle of pull releases the brake to permit rotation of the cable reel and paying off of cable therefrom. Spring 24 may be replaced by a weight. The dispenser may be used with frame member 12B vertical. <IMAGE>
Patent GB-2239170-A (GB)
Title: Folding framework for sofa-beds
Inventor: DE LORENZO STELIO
IPC: A47C17/22
Filed: 1990-04-18
Abstract: The framework comprises a first and a second frame connected to a fixed structure through a primary driving mechanism guiding the movements of the frames from a closed to an opened condition in which said frames are horizontally disposed in a coplanar relation. The primary driving mechanism is comprised of a first and second lever both pivoted to the fixed structure and interconnected through one connecting rod, a third lever linked between the first lever and the second frame, a second connecting rod linked between the third lever and an extension offered by the second lever and a slide lever hinged on said extension and slidably engaged with the first frame. A guide and support member secured to the third lever offers a slidable support seat to said slide lever. The arrangement reduces the possibility of mechanical jamming and of the framework being overturned should the users weight bear on the free end of the first frame. <IMAGE>
Patent GB-2233936-A (GB)
Title: Producing endless drive belts.
Inventor: SCHANIN JONATHAN
IPC: F16G5/12
Filed: 1990-05-21
Abstract: The endless drive belt is produced by winding a pre-formed load-carrying member (6) comprising a cord (8) embedded in a solid but softenable elastic material (10) along and around a surface of an endless compression member belt (2) also comprising a solid but softenable elastic material, thereby forming a layer (4) comprising a plurality of turns, and by simultaneously causing said turns to become intimately bonded to said surface. Said bonding is achieved by applying mutual pressure between said turns and said surface during winding and by selectively softening the surface layers of both said load-carrying member and said endless compression member belt which are to come into contact with each other, just prior to coming into contact with each other. The material of said surface layers is allowed to fuse. Said turns of said load-carrying member are further allowed to be partially impressed in said surface of said endless compression member belt. Softening may be carried out by the application of heat and/or the application of an adhesive. A device for carrying out the above method is also disclosed. With the device disclosed endless drive belts may be easily produced in-house at the time they are required at any size and at minimal costs and capital outlay.
Patent GB-2234263-A (GB)
Title: Novel masking technique for depositing gallium arsenide on silicon
Inventor: WU ALBERT T
IPC: H01L21/20
Filed: 1990-06-12
Abstract: A process for forming GaAs on a silicon substrate with very low levels of unintended silicon doping comprises depositing a dielectric layer which may be of silicon dioxide or silicon nitride on the substrate, forming a window in the dielectric layer so as to expose the silicon substrate in the regions in which the GaAs is to be formed and finally forming a gallium arsenide on said region. The GaAs layer is formed on the substrate using conventional techniques with the gas phase transfer of silicon contamination from the edges and back of the silicon substrate to the GaAs region inhibited by the dielectric layer or layers. Forming the window may be achieved by surrounding the silicon layer, previously surrounded by dielectric layer, with a photoresist layer which is masked, exposed and developed on the top side using photolithographic techniques to expose an opening in the region 6 in which the GaAs is formed (Fig 3). The dielectric layer is then etched so that the exposed areas of dielectric layer 2 of window 5a is etched away as shown in Fig 4 after the photoresist has been removed and the surface of the silicon substrate in the region 6 in which the GaAs is to be formed is now exposed. Alternatively the window 5 can be formed by using chemical etching or plasma etching. In a modification a first dielectric layer is deposited on the substrate, a second dielectric layer on said first dielectric layer and portions of said first and second dielectric layers are removed to expose a predetermined region of said substrate. In a further embodiment a first SiO2 layer is deposited on the substrate, a Si3N4 layer is deposited on the SiO2; a portion of the Si3N4 layer is removed so that a predetermined region of Si3N4 layer remains atop first SiO2 layer; depositing a second SiO2 layer on said first SiO2 layer; removing said predetermined region of said Si3N4 layer to expose underlying predetermined region of said first SiO2 layer to expose a portion of said substrate. <IMAGE>
Patent GB-2248817-A (GB)
Title: Portable lifting apparatus
Inventor: SCOTT PETER
IPC: A61G7/10
Filed: 1990-08-31
Abstract: A portable lifting apparatus (1) for raising and lowering a patient comprises a lifting device and a harness (20). The lifting device comprises a housing which encloses a winch mechanism, an associated power plant, and remote control means (10). Hook means (11) are mounted on the housing and a belt (6) extends through the housing having one end secured to a spool of said winch mechanism and its other end attached to a support which is to be positioned vertically above said winch mechanism when the apparatus (1) is used. The harness (20) is provided with a plurality of looped straps (23, 25) arranged to hook over said hook means (11). The housing (1) is above the patient and the straps (23, 25) are looped over said hook means when the apparatus (1) is used to lift the patient and activation of said remote control (10) means effects lifting of the patient. <IMAGE>
Patent GB-2239059-A (GB)
Title: Bearings
Inventor: TANAKA TADASHI
IPC: F16C33/06
Filed: 1990-11-27
Abstract: A bearing for a high-load engine comprises a strengthened intermediate bonding layer placed between a backing steel layer and an aluminium alloy bearing layer. The intermediate bonding layer has a hardness ranging from 40% to 70% of the aluminium alloy bearing layer, in terms of Vicker's hardness. The bonding layer may also comprise an aluminium alloy. Suitable materials are (a) for the bearing layer: Al-Sn-Cu, Al-Sn-Cu-Si-Pb, Al-Sn-Gu-Si-Pb-Zn or Al-Gu-Si-Pb-Zn-Mg; (b) for the bonding layer: Al-Mn-Gu, Al-Cu, Al-Cu-Si-Mg, or Al-Cu-Zn-Si.
Patent GB-909672-A (GB)
IPC: C08C19/16
Abstract: 909,672. Polyisoprene hydrohalides. FARBENFABRIKEN BAYER A.G. May 29, 1961 [May 31, 1960], No. 19345/61. Class 2(6) Polyisoprene hydrohalides are made by polymerizing isoprene with an organometallic compound of lithium or aluminium in an inert organic solvent to obtain a solution of polyisoprene in which at least 75 % of the isoprene units are linked in a 1,4-cisarrangement and reacting the solution with a hydrogen halide at a temperature not exceeding +20‹C. The isoprene is preferably purified before polymerization. The organic solvents are generally hydrocarbon in nature. The organometallic compound may be accompanied by a titanium tetrahalide such as titanium tetraiodide. The organometallic compound may be lithium butyl or aluminium triisobutyl, or diethyl aluminium chloride. The preferred hydrogen halide is hydrochloric acid.
Patent GB-2243710-A (GB)
Title: Camcorder
Inventor: HONG KUEN PYO
IPC: G11B15/00
Filed: 1991-01-15
Abstract: A camcorder comprising a twin deck video recorder 3 and a camera in the same housing. Each of the decks 3-1, 3-2, is connected for recording the output signal from said camera or a playback signal from the respective other deck, under the control of an input signal selection means 2 and an output signal selection means 4. <IMAGE>
Patent GB-2252231-A (GB)
Title: Wet-suit hood
Inventor: WATKINS JOHN
IPC: A42B3/30
Filed: 1991-01-21
Abstract: The hood has a neck aperture 14 and a face aperture 16 and a wall of the hood has a watertight compartment 20 for receiving electrical or electronic apparatus 28 ... 34, a resealable watertight opening 38 being provided to allow access to the compartment. Enables use of inexpensive C-B type radio apparatus at the surface for communication to a service boat. <IMAGE>
Patent GB-2253380-A (GB)
Title: Vehicle rear-view mirrors
Inventor: TSANG PETER Y
IPC: B60R1/072
Filed: 1991-03-02
Abstract: A vehicle has a pair of door mounted rear view mirrors (10), one mirror (10) being mounted on a door on the offside of the vehicle and the other mirror (10) being mounted on a door on the nearside of the vehicle, each mirror (10) comprising a mirror housing (12) with a mirror glass (15) pivotally mounted in the mirror housing (12), and adjustment mechanism (17) being provided for adjustment of the mirror glass (15) from a central position to positions inclined horizontally to either side of the central position, the mirrors (10) being mounted on the doors so that the mirror glasses (15) when in their central positions are inclined at equal but opposite angles to the longitudinal axis of the vehicle, both mirrors (10) having mirror glasses (15) of convex configuration. <IMAGE>
Patent GB-2243961-A (GB)
Title: DC-DC Power supply circuit
Inventor: ASPINALL ANDREW WAYNE
IPC: H02M3/156
Filed: 1991-03-11
Abstract: in a power supply circuit especially in a battery charger for a battery for a golf trolley a forward switching stepdown converter circuit embodies a high speed switching device 26 in the low DC line, along with an energy storing inductor 28, and the low line is coupled to the high line through a diode 30 connected to the low line between the high speed switching device and the storage element. The switching device 26 can be on for 100% of the total duty cycle so as to operate in the linear mode. When charging a discharged battery initially PWM controller 42 is controlled by an output from amplifier 56 as long as its output exceeds a predetermined value and an amber LED 76 is illuminated. When the output from amplifier 56 is below this value the pulse width control is by means of the output from amplifier 46. When the output of amplifier 56 falls below a further value transistor 66 turns off and circuit 69 is excluded from circuit 49, the output voltage falls to a trickle charge, amber LED 76 is turned off and a green LED 78 is turned on. A thermistor 68 provides temperature compensation and overvoltage protection is obtained by 34, 38, 40 and 57. <IMAGE>
Patent GB-2248997-A (GB)
Title: Sound output device
Inventor: NEGISHI HIRO
IPC: H04R1/28
Filed: 1991-05-31
Abstract: A speaker unit is provided in which a drive unit 18 fits within a housing 10 which is supported cantilever-wise above a sound mirror 14. The axis of the drive unit 18 is offset relative to the axis of the sound mirror 14 to enhance the distribution of sound intensity in a preferred listening direction. A single speaker having concentric first and second diaphragms, when operated at high frequency, directs a narrow beam of sound towards the mirror 14 from which it can be reflected into the room so as to produce a desired sound distribution. The struts 16 have lengths greater than their width and are directed towards the axis of the drive unit 18 to minimise their effect on the sound reaching the listener. <IMAGE>
Patent GB-2258774-A (GB)
Title: Waveform generators
Inventor: OWEN DAVID PAUL
IPC: G06F1/03
Filed: 1991-08-16
Abstract: A waveform generator suitable for use in the testing of instrument landing systems has a first generator for generating digitally a first waveform comprising the superposition of a second waveform (19) of a first frequency and a third waveform (21) of a second frequency; a second generator for generating digitally a fourth waveform comprising the superposition of a fifth waveform (25 or 27) comprising a phase reversed version of one of said second (19) and third (21) waveforms of the frequency of said one waveform (19 or 21) and a sixth waveform (23 or 29) in phase with and of the frequency of the other one of said second (19) and third (21) waveforms; and means for combining said first and fourth waveforms thereby to produce a waveform suitable for said use. <IMAGE>
Patent GB-2258895-A (GB)
Title: Compression pipe coupling
Inventor: HENSMAN PAUL JOHN
IPC: F16L19/08
Filed: 1991-08-17
Abstract: A pipe coupling for connecting a pipe 20 to a pipe connector sleeve 30 has an internally screw-threaded nut 110 engageable with externally screw-threaded sleeve 32 on connector sleeve 30. The nut 110 has a frusto-conical region 116 which engages with an external frusto-conical surface 22 of an axially split collet 18. The collet 18 serves to locate a seal back-up washer 28 which cooperates with an O-ring seal 28. The nut 110 has a substantially radially inwardly directed annular lip 140 providing one part of an abutment means whose other part is provided by the frustum 142 of collet 18 so as to limit the radially outward force applied to the nut 110 when extreme pressures are applied to the pipe coupling. <IMAGE>
Patent GB-2263219-A (GB)
Title: Animal feed dispenser.
Inventor: ELLIS JOHN WILLIAM GEORGE
IPC: A01K5/00
Filed: 1991-11-27
Abstract: A mobile hopper 1 is fitted with a feed wheel 7 for moving animal feed from the hopper into an impeller 5 for ejection to one side or the other for feeding sheep, pigs, fish and other animals. The feed may be allowed to fly free or be directed by means of a nozzle. A slide 6 is provided to allow emptying of the hopper without passing through the impeller and for depositing feed on the ground in a line.   <IMAGE>
Patent GB-2252817-A (GB)
Title: Heat transport apparatus
Inventor: ETTINGER GEORGE MICHAEL
IPC: F25B30/06
Filed: 1991-12-10
Abstract: Heat or cooling is transferred over appreciable distances from heating or cooling source 1, typically a power station, to location or space 9 requiring heat or cooling for district heating or air conditioning by carrying medium 5 in wagons 6 over rails 10 or in a ship. Heat is transferred to the medium at source 1, and/or removed at using location 9, by heat exchangers 4. Heat transfer can be optimised by heat storage, allowing heat collection while electric power station is on maximum load and generates maximum waste heat, with delivery at end of travel when required. Heat transfer to/from ambient atmosphere can be used for performance enhancement, with heat transfer wagon insulation modified during travel. Ice trains are used to cool tunnels. Possible media for heat transfer include water, paraffin, napthalene or sodium, or carbon, steel or aluminium. <IMAGE>
Patent GB-2262849-A (GB)
Title: High voltage pulse generator
Inventor: ROBINSON TREVOR
IPC: H03K3/55
Filed: 1991-12-24
Abstract: An electrical arrangement, for providing a high voltage pulse across a dielectric switch, comprises means for generating a main high voltage pulse, an energy storing pulse forming line 12 connected at one end 7a, 7b to the main pulse generating means and connected at the other end to an electrode 25 of the dielectric switch, means for generating a high voltage trigger pulse and a ferrite loaded shock line 16. The ferrite loaded shock line 16, preferably located within the pulse forming line (or within a line on the output side of the switch), is connected at one end to the trigger pulse generating means via coaxial inner conductor 79 and connected at the other end to a trigger electrode 23 located within the dielectric switch. Line 12 enables a high voltage pulse to build up on electrode 25, the trigger pulse has its edges sharpened by the shock line 16 and triggers a discharge across the dielectric 14 to an output line 30. This produces an extremely fast, high voltage pulse e.g. for a radar transmitter. <IMAGE>
Patent GB-2265255-A (GB)
Title: Electrical switch.
Inventor: WONG BUN
IPC: H01H15/06
Filed: 1992-03-04
Abstract: An electrical switch (10) comprises a body having a wall (13), supporting a plurality of switch terminals (16) each passing through the wall (13) from an inner to an outer side thereof, a movable contact member (21) located within the body (11), and an operating member (18, 19) for moving the contact member (21) from a first position in electrical contact with two of the switch terminals (16) to a second position out of electrical contact with at least one of the two switch terminals (16). The inner side (13a) of the wall (13) is provided with a projection (28) and recesses (27) to lengthen the surface path between the terminals (16) in order to avoid arcing or flash-over between adjacent switch terminals (16). A resiliently compressible indexing member (23) is provided between the inner surface of a top wall of the switch body and a facing surface (18a) of the operating member (18, 19). The indexing member (23) and one of these two surfaces have complementary formations (23a) for engagement to define the first position of the contact member (21). <IMAGE>
Patent GB-2253891-A (GB)
Title: Rotary damper
Inventor: KAWAMOTO MASANOBU
IPC: F16F9/32
Filed: 1992-03-11
Abstract: A rotary damper includes a dish-shaped housing having a depression surrounded by a cylindrical wall 13, a viscous fluid 41 contained in the depression, a damping rotor with a damping plate 21 accommodated in the viscous fluid, and a cap covering the depression with a shaft 26 of the damping rotor projecting through a central hole in a cover wall 32 of the cap. The cylindrical wall 13 is provided at the base of its external periphery with a sloped annular portion 17 of downward increasing diameter, and a lower edge portion of a circular wall 33 of the cap is contacted with the slope of the sloped annular portion 17 during welding of the cap to the dish-shaped housing. <IMAGE>
Patent GB-2254825-A (GB)
Title: Manufacturing laminated flexible bearings, in particular for engine nozzle joints
Inventor: PAQUET ROBERT E
IPC: F16F1/41
Filed: 1992-04-09
Abstract: To make a laminated flexible bearing constituted by rigid reinforcing layers made of composite material alternating with layers of rubber or elastomer, each reinforcing layer (26) is formed by winding a resin pre-impregnated thread directly on the underlying layer (28) of rubber or elastomer. Advantageously, the flexible bearing is made by alternating layers formed by winding a resin pre-impregnated thread and layers formed of non-vulcanized rubber or elastomer, after which the resin is polymerized and the rubber or elastomer is vulcanized simultaneously. <IMAGE>
Patent GB-2257943-A (GB)
Title: Laminated film bag for packing food
Inventor: OTSUKA YOSHIAKI
IPC: B65D17/28
Filed: 1992-06-25
Abstract: A laminated film bag is made of laminated films each composed of an outermost layer formed of a polyester resin film (5), an innermost layer formed of a polyolefin resin film (1) and an intermediate layer formed of an aluminium foil (3), the polyolefin resin film (1) having formed thereon score lines (2) having a depth of 1/20 to 2/3 of the thickness of the polyolefin resin film (1) and an opening width of 0.5 to 7mm, at intervals of 1 to 15mm. A polyamide layer (4) may be disposed between the polyester resin film (5) and the aluminium foil (3). <IMAGE>
Patent GB-2259969-A (GB)
Title: Valve Assembly
Inventor: GUINANE CHRISTOPHER JOHN
IPC: G01L19/00
Filed: 1992-09-24
Abstract: A valve assembly for isolating a pressure gauge from a pressurised oil filled cable conduit in order to test the gauge has a valve member (25) with an axial passage (28) for allowing communication between a pressure port (12) and a gauge port (16) in the housing (7, 8). An actuating member (32) is depressible to shut off the passage and isolate all ports (Fig 26) then upon further depression to move the valve member (25) to allow communication between the gauge port (16) and a drain port (20) (fig 2C). Movement of the valve member and the actuating member may be resisted by resilient means (40, 42) and the valve may be provided with means to prevent inadvertent operation such as a screw-down collar (123, fig 4). The assembly may incorporate a depressible selector shuttle (288, fig 4) which can be locked down for selectively allowing communication between the pressure port and the gauge port so that depression of the actuating member will connect the pressure and drain ports to allow a sample of oil to be taken from the drain port for analysis. <IMAGE>
Patent GB-2272291-A (GB)
Title: Anchor chain measuring apparatus
Inventor: EPSTEIN PETER CHARLES
IPC: G01B7/02
Filed: 1992-11-10
Abstract: Apparatus for measuring the length of anchor chain or other line or cable paid out from a vessel via a winch (10) thereon comprises a rotor (14), means (12) for mounting the rotor on or adjacent to the winch, so as to be rotated upon rotation of the winch, means (18, 19) for counting the revolutions of the rotor as a measure of the length of chain paid out, and means (22) for converting the revolution count to a display of said length. The arrangement described uses a magnet (16) in the rotor (14) and reed relays (18, 19) so that an up or down count is produced in dependence on the direction of rotation. The circuitry uses a microprocessor and has means to calibrate the system by initially paying out a known length of chain. <IMAGE>
Patent GB-2273891-A (GB)
Title: Funnel for liquids
Inventor: BARNARD ROBERT
IPC: B67C11/02
Filed: 1993-01-04
Abstract: A funnel 10 for use in adding oil to a motor vehicle engine has on its stem 16 a shoulder 18 which abuts the rim of the engine filler neck and in addition has two diametrically opposite, radially protruding bayonet pins 20 which engage in corresponding internal bayonet tracks 22 in the filler neck 12. The bayonet tracks 22 normally receive bayonet pins on the filler cap of the engine. The engagement between the funnel and the engine holds the funnel in the appropriate orientation for pouring oil into the engine thus leaving both hands free to hold and control the container. Tabs, ears or a screwthread may replace pins 20. <IMAGE>