baber/WOPTO huggingface dataset:
Patent GB-2194825-A (GB)
Title: Anti-skid control
Inventor: ARIKAWA TETSURO
IPC: B60T8/66
Filed: 1986-09-05
Abstract: A vehicle braking system includes front wheel cylinders 7a, 7b, and rear wheel cylinders 12a, 12b; wheel speed sensors 28a, 28b, 29a, 29b; a first valve device 4a for controlling pressure at wheel cylinder 7a, and arranged between a first chamber of a tandem master cylinder 1 and cylinder 7a; a second valve device 4b for controlling pressure at the wheel cylinder 7b and arranged between a second chamber of the master cylinder 1 and wheel cylinder 7b; a valve apparatus 8 (see Fig. 4 for details) has pressure from cylinders 7a, 7b applied thereto at inports 9, 18 normally communicated respectively with output ports 10, 14 to rear cylinders 12b, 12a; a control unit 31 (see Figs. 3, 5, 6, 7) receives signals from sensors 28a, 28b, 29a, 29b and discriminates the frictionally lower one of the sides of the road on which the wheels are running, on the basis of the outputs of the wheel speed sensors, combines logically the measuring or judging result of the skid condition of the one rear wheel running on the frictionally lower one of the sides of the road, with that of the one front wheel running on the same side as the frictionally lower one side, for generating the instruction for controlling the first or second valve device, and generates the instruction for controlling the second or first valve device, on the basis of the measuring or judging result of the skid condition of the other front wheel, independently of that of the rear wheels. Detailed description of the operation on the signals is given. The system shown is X-Type-but it is stated that a front-rear separation system or H-connection system may be applied to the invention. <IMAGE>
Patent GB-2196920-A (GB)
Title: A dirigible
Inventor: REID JAMES ARTHUR IAIN
IPC: B64B1/58
Filed: 1986-09-26
Abstract: A dirigible, in which the ring gas is helium, has an on board helium purification apparatus comprising a compressor 12 and a membrane filtration unit 16. Helium is drawn from the envelope via a line 10, the purified helium being returned to the envelope via a line 18. A line 20 from the waste outlet of filtration unit 16 feeds a second filtration unit 22, helium recovered from this unit returning via a line 24 to the main circuit at line 10. <IMAGE>
Patent GB-2184999-A (GB)
Title: A transportation and packaging box
Inventor: CARLSSON ROLF
IPC: B65D5/54
Filed: 1986-11-27
Abstract: A box or like packaging device formed from a blank comprises a top panel (2), a base panel (1) and two side panels (3, 4) and end flaps which form the front side (5, 13, 14, 15) and the back side (16, 17, 18, 19) of the box. The side panels (3, 4) are mirror images of one another and have recesses (11, 12) in the corners thereof adjacent the front and back sides of the box. Perforations (8) facilitate opening. <IMAGE>
Patent GB-2212976-A (GB)
Title: Manufacture of electronic components of cadmium mercury telluride
Inventor: BLACKMAN MAURICE VICTOR
IPC: H01L21/383
Filed: 1987-03-18
Abstract: An electronic component such as an infrared photodiode (D) or bipolar transistor (T) of cadmium mercury telluride has an active region (11,12) of p type conductivity formed from an n type portion of a layer (1) of cadmium mercury telluride by heating in a mercury-deficient ambient to drive mercury out through the surface of the layer (1) until said n type portion is converted into p type material throughout its thickness. The layer (1) of cadmium mercury telluride is provided on a substrate (2) of different material, for example sapphire, so as to inhibit extraction and introduction of donors and acceptors between the layer (1) and the substrate (2) during the heating treatment. By controlling the heating treatment at a low temperature a low acceptor concentration (less than 10<16> cm<-3>) is provided in a reliable and reproduceable manner for the p type active region (11,12) over a major part of the thickness of the layer (1) so providing a p type bulk region (11,12) having a low acceptor concentration. The invention also permits conversion to p type material after the cadmium mercury telluride has been patterned throughout its thickness by ion beam etching into a desired shape for an electronic component, even though an excess concentration of mercury results from the ion beam etching. <IMAGE>
Patent GB-2202360-A (GB)
Title: A display apparatus
Inventor: CALDER WILLIAM MCKENZIE
IPC: G09F19/08
Filed: 1987-03-19
Abstract: An animated human figure 40 holds reading matter, has a head 6 movable between a lowered or reading position and a raised speaking/singing position and is provided with a sound-producing device (27). Movement of the head between the raised and lowered positions is controlled via an electromagnetically operated actuating device (20, 23, 24) operated by a remotely positioned control unit (7). The arms may also move in conjunction. <IMAGE>
Patent GB-2210977-A (GB)
Title: Ultrasonic gas composition measurement
Inventor: ATKINS PETER JAMES FREDERICK
IPC: G01N29/024
Filed: 1987-10-14
Abstract: Conventional gas meters measure volumetric flow rate whereas the heat energy of the gas flowing varies with the temperature and pressure and with the relative proportions of hydrogen and methane in the gas supply. The invention provides a heat energy flowmeter comprising means for measuring mass flow rate in conjunction with apparatus for measuring the relative amounts of hydrogen and methane in the mixture. The latter is uniquely related to the velocity of the sound in the gas and the temperature of the gas, and ultrasonic time-of-flight transducers 1, 2 and temperature transducer 10 provide the values from which the relative amounts can be measured. The apparatus may be used without the mass flowmeter and for other gases. The transducers 1, 2 are switched to each act successively as transmitter and receiver, and a timing circuit 7 calculates the signal velocity in each direction and this is averaged in a store 8. A processor 9, which also receives a temperature value and a mass flow rate value, infers the relative proportion of the gases and hence the energy flow rate. <IMAGE>
Patent GB-2200874-A (GB)
Title: Load accommodation on vehicles
Inventor: SHORT ADRIAN JOHN RAYMOND
IPC: B60P3/04
Filed: 1988-02-03
Abstract: A covered vehicle or trailer for the transportation of goods (eg poultry) comprises a body with front and rear bulkhead walls (9, 10), and a rigid roof (15) supported by the bulkheads via lifting gear (14) (eg four hydraulic rams) for raising and lowering the roof; the floor (7) of the body has locating projections (8) extending across it at longitudinally spaced positions, the arrangement being such that the body, with the roof raised, is loaded with tiers of modular crates having coincident locating grooves and projections (3, 4) running across their bottom and top walls respectively, by moving the crates of each tier into position so that they are located via their locating grooves onto respective projections, and thereafter the roof is lowered towards the top walls (5) of the uppermost tier of crates.   Conveniently, the roof can be lowered to apply pressure to the uppermost tier of crates, to secure all the tiers. The front and end bulkheads, and if desired the roof, may each conveniently be provided with a ventilation opening and at least the front bulkhead opening has a sliding door by which the amount of ventilation air passing through the body can be adjusted. <IMAGE>
Patent GB-2218955-A (GB)
Title: Propulsion duct with multiple rudders
Inventor: FREATHY ROGER GARTH
IPC: B63H5/14
Filed: 1988-04-22
Abstract: In a propulsion system for a marine vessel comprising a propulsion duct 11 with at least three shutter rudders 16, 17, 18 fitted at the aft end of the duct to turn in unison in the duct outflow and operate in the manner of a cascade, the wing rudders 16, 18 are provided with fixed trailing edge flaps 19 that are angled outboard away from the duct axis. The shutter rudders are mounted on pintles the axes of which lie in a transverse plane a little aft of the exit plane of the duct and the rudder or rudders intermediate the wing rudders extend substantially no farther forward from the pintles than the exit plane of the duct, whereas the wing rudders have nose portions (20 Fig 1 not shown) extending forward into the duct beyond the exit plane and of convexly arcuate form at their leading edges so that when the rudders are put over to maximum deflection the forward nose portion of the wing rudder at the outside of the turn substantially engages the duct wall at that side to substantially prevent leakage of the duct outflow through the gap between the wing rudder nose and the duct wall. The toe-out angle of the fixed flaps at the trailing edges of the wing rudders is typically of the order of 15 DEG . <IMAGE>
Patent GB-2226136-A (GB)
Title: Location finding equipment
Inventor: DRANE JOHN HOWARD
IPC: G09B29/10
Filed: 1988-12-13
Abstract: Location finding equipment comprises a ground plan (14) and a compass (11) having a needle (13) sensitive to the earth's magnetic field, the compass being mounted in correct pre-determined disposition relative to the ground plan so that use of the ground plan in the correct orientation requires such a low skill level that most users will readily find their way over the site charted by the ground plan from a study of the ground plan. <IMAGE>
Patent GB-2229030-A (GB)
Title: Electronic educational device
Inventor: SCALES ANDREW GEOFFREY
IPC: G09B7/04
Filed: 1989-03-07
Abstract: Current and base stores 13, 14 provide lexions whose words can be displayed on LCD display 3 and are to form the subjects of various tests. The words are stored along with associated information, e.g. stress grammar, meaning. A keyboard 5 enables input of data into the stores 13, 14 of test word selection and of answer data, Means 12 are provided for comparing inputted answers with the correct stored information. The number of correct answers for respective words in the current store 13 is registered and when that number reaches a particular value, the respective word is shifted to the base store 14, on the assumption that the word is now part of the trainee's long term memory. Means may be provided for perusal and/or testing of words held in either store 13, 14 and an indication may be provided of the quantity of data in the stores 13, 14. Provision may be made for shifting words from the base store back into the current store if an incorrect answer for a base store word is inputted. <IMAGE>
Patent GB-2216965-A (GB)
Title: Energisation of sealing assemblies
Inventor: MORGAN IAN HENDRY
IPC: E21B33/00
Filed: 1989-04-07
Abstract: The invention is concerned with the energisation of wedge-type sealing devices 26, 28 of the type known as Cahn devices by applying compressive force in an axial direction to cause expansion in a radial direction. The method provides for inserting a housing 6, or energising ring (88), into the bore which may be part of a wellhead arrangement, rotating the housing 6 by means of a running tool so that it rotates within the bore wall 18 or a member 10 engaged in a recess in the bore wall until a stop position is reached, continuing rotation of the housing so as to produce relative movement with respect to the bore along a threaded interengagement zone to cause said sealing devices 26, 28 to be compressed within a gap provided between the housing 6 and a leading, nose portion 30 thereof, so as to cause radial expansion of the members of the wedge-type sealing device. <IMAGE>
Patent GB-2219731-A (GB)
Title: Mopping unit
Inventor: TAYLOR MICHAEL
IPC: A47L13/60
Filed: 1989-06-13
Abstract: A mopping unit comprises a mop bucket (1) combined with a wringer having two squeeze rollers (2,3) mounted at the top of the bucket (1). An operating mechanism (4) for the squeeze rollers (2,3) includes a toggle linkage (12 or 13) comprising two toggle links (19,22 or 20,23) which are directly interconnected at a pivot P. When the two toggle links (19,22 or 20,23) are aligned, the toggle pivot P is substantially coplanar with the separate rotational axes (X,Y) of the two squeeze rollers (2,3) one of which is moved, to the operative wringing position, by the mechanism (4) on depression of a foot pedal (6).
Patent GB-2237480-A (GB)
Title: Carrier regeneration
Inventor: HAWKES HENRY WILLIAM
IPC: H04L27/227
Filed: 1989-10-06
Abstract: A circuit for regenerating the RF or IF carrier of, principally, a received PSK (phase-shift keyed) signal, in which the signal is fed to a phase detecting means 1, 3, 4, 5, 12 and 13 connected in a form of phase-locked loop which includes a voltage controlled oscillator (VCO) 2. The phase detecting means has an input-output characteristic such that its output waveform is a sensibly linear isosceles triangle whose slope changes direction at least twice per 360 DEG  linear change of phase between the two inputs thereto. For an M-ary PSK signal, this output waveform must change direction 2M times per 360 DEG , eg for binary PSK 4 times per 360 DEG . A novel form of phase detecting means is described in which the balanced outputs of each of two known sinusoidal phase detectors which receive relatively phase-displaced inputs are bi-polar clipped and subtracted to produce cusped waveforms; these are then subtracted to produce the required triangular characteristic. <IMAGE>
Patent GB-2231150-A (GB)
Title: Liquid transfer devices
Inventor: BUNCE ROGER ABRAHAM
IPC: G01N37/00
Filed: 1990-03-23
Abstract: Transfer device for disposable one-time use e.g. for biochemical diagnostic assays has two liquid flow channels (10a, 20a) leading from a respective pair of channel ends to a common site (30a) and operable to deliver liquid to this site in sequentially timed manner following simultaneous application of such liquid to the channel ends. Typically respectively different reagents (11a, 21a) are incorporated in the two channels, and a third reagent (31a) at the common site, whereby a sample to be assayed in respect of a particular content can be applied to the site, immobilised by the third reagent, subsequently subjected to one channel reagent to detect any of the content of interest, and finally subjected to the other channel reagent to exhibit for the user any detected content. 
<IMAGE>
Patent GB-2231714-A (GB)
Title: Pulsed laser
Inventor: ZIMMERMANN CLIFTON
IPC: H01S5/062
Filed: 1990-05-16
Abstract: Square-wave laser light pulses are provided by a laser diode LD fed by a current pulse generator S1 which comprises a timing pulse generator TI and a power stage PS, followed by a single-pole driver stage TS of high current having a rise time of a few nanoseconds for the laser diode which is connected to a capacitative battery C. 
<??>Overshoot of the pulse flanks is attenuated by resistors Rd and diode D. 
<??>Pulse width may be adjusted by element RC. A V-MOS field effect transistor is exemplified for power driver TS. 
<IMAGE>
Patent GB-2246013-A (GB)
Title: "cooling solid state switches"
Inventor: ADDY MALCOLM KIRBY
IPC: H05K7/20
Filed: 1990-07-04
Abstract: An electrical circuit within a plug has a solid state switch (5) which generates heat during operation of the circuit. A thermal connection is made between the solid state switch (5) and at least one pin (2, 3) of the plug. Heat generated by the switch (5) is conducted out of the plug housing (1) through the pin (2, 3). There may be a direct connection between the pin (2, 3) and switch (5) or the connection may be made via a heat conducting path (9).
Patent GB-2240773-A (GB)
Title: A bucket wheel sluice for granulated bulk materials
Inventor: BEIRLE WALTER
IPC: B65G53/46
Filed: 1990-11-21
Abstract: A bucket wheel sluice designed for granulated bulk materials has in the inner wall of the housing 1 a triangular-sectioned recess which is adjacent to a preliminary stripper edge 7 which defines the inlet cross-section. The apex of the recess points in the direction of rotation of the bucket wheel 4, 5. The recess is partially filled by a deflecting member 9 which itself points in the direction opposite to the direction of rotation, and is spaced slightly from the walls of the recess so as to keep the apex of the recess free from grains of bulk material. <IMAGE>
Patent GB-2243942-A (GB)
Title: Er, Nd/Halide glass fibre amplifiers
Inventor: FRANCE PAUL WILLIAM
IPC: H01S3/067
Filed: 1991-01-22
Abstract: A fibre amplifier able to operate independently at either or both telecommunications wave bands, 1300-1400nm and 1500-1600nm, eg for frequency division multiplex comprises Nd<3+> and Er<3+> which lase independently in halide, preferably fluoride, glass hosts. Pumping at 790-810nm excites both systems. Pumping at 700nm-790nm or 810nm-900nm excites Nd<3+> selectively whereas pumping at 950nm-1040nm or I450nm-1540nm selectively excites Er<3+>. Either or both fibre tails may be used for input and output (cf also Figs 2-5). As an alternative to transmission fibres with SiO2 cladding and SiO2/GeO2 core, tails as well as links to the pump sources may be halide (fluoride) fibre whereby splices (22, 23) are not required. Lasing transitions are detailed (Fig. 6). <IMAGE>
Patent GB-2254215-A (GB)
Title: Video camera for swimming pool
Inventor: MACKINNON MORAG CAMERON
IPC: H04N5/225
Filed: 1991-02-21
Abstract: A video camera assembly comprises a video camera (26) mounted in a housing (16) which is located in a wall (11) of a swimming pool below the water level thereof. The housing preferably has a tubular body (17) with a transparent cover (20) which is sealed on the body. The cover (20) may be domed to allow the camera to scan, The housing may be one which normally contains a waterproof light fitting. <IMAGE>
Patent GB-2254414-A (GB)
Title: Volume measurement of microbial organisms.
Inventor: PACKER HELEN LYN
IPC: G01N15/14
Filed: 1991-03-21
Abstract: A method and apparatus for cell volume and biomass estimation by sampling a fermentation broth and analyzing an image of the broth using brightness thresholds to distinguish between background, cellular regions and cytoplasmic and degenerated regions and summing corresponding areas in the image. Volumes can be calculated from the areas by treating the organisms as geometrical bodies and biomass derived by multiplying the volume by a density.
Patent GB-2247851-A (GB)
Title: Drop forged stud link chain
Inventor: ISITT MICHAEL
IPC: F16G15/12
Filed: 1991-06-14
Abstract: In a method of producing ships anchor chain preformed drop forgings are welded together in a prescribed manner thus allowing the manufacture of any given length of chain using only two unique types of forging. This allows for the rapid construction of stud link chain avoiding the need for conventional manufacturing techniques normally employed on this type of product such as link bending, stud fabrication or continuous casting. Links formed from two drop forged welded half-links are combined with solid forged links to form a chain of required length. <IMAGE>
Patent GB-2246915-A (GB)
Title: Lead-through for electrical wires in valve casing
Inventor: BECK ERHARD
IPC: H01B17/26
Filed: 1991-07-29
Abstract: A lead-through for one or more electric wires (9) is used in an assembly comprising a cover (2) and a base, preferably of a valve block for electromagnetically switchable hydraulic valves. A conductor accommodating element (5) is sealingly positioned in an opening of the cover (2) distant from the base (not shown) and is retained by a protective cap (3) which can be slid on to the conductor accommodating element (5). The cap (3) slides in grooves (6) of element (5) and has a projection (12) retainable in the cover (2) to keep it in place. O-ring (11) seals the conductor accommodating element (5) in the opening in the cover (2). <IMAGE>
Patent GB-2249924-A (GB)
Title: Moving vehicle transponder
Inventor: BLUNDEN PETER PHILIP
IPC: G08G1/017
Filed: 1991-08-30
Abstract: A transponder tag operative in the UHF range includes a substrate 30 of dielectric material having formed on one side a conductive surface providing a ground plane 32 and a dipole antenna 36, a slot line 38 within the ground plane forming a balanced antenna feeder and leading to the centre of the dipole antenna, and on the opposite side of the substrate a transmission line feeder 44 positioned for electromagnetic coupling with said slot line, the transmission line feeder being coupled to transceiver circuit and processing means 42 mounted on the opposite side for performing a transponding function. <IMAGE>
Patent GB-2258522-A (GB)
Title: Heater for liquid
Inventor: HAMMOND BRIAN WILLIAM
IPC: H05B3/00
Filed: 1991-10-25
Abstract: A heater for liquid comprises a vessel (10) having an inlet (20) for cold liquid and an outlet (18) for hot liquid, an electrically operated valve means (22) to control the flow of liquid into the vessel (10) through the inlet (20), and a heating means (12) to heat the liquid in the vessel (10), first control means (C1) operative for controlling the liquid level in the vessel (10), the first control means (C1) comprising a level sensor (28) to which the first control means (C1) responds by maintaining the electrically operated valve means (22) closed when the level of liquid in the vessel (10) reaches an upper limit, the heater having a second control means (C2) operable independently from the first control means (C1), the second control means (C2) including a temperature sensor (29) to which the second control means (C2) responds by rendering the heating means (12) operative when a temperature below a first threshold temperature is sensed, and inoperative when a temperature above a second threshold temperature is sensed. <IMAGE>
Patent GB-2249969-A (GB)
Title: Slurry stirrer
Inventor: CLAYTON ANTHONY MACGREGOR
IPC: B01F15/00
Filed: 1991-10-29
Abstract: A slurry stirrer e.g. for aerating agricultural wastes comprises an air-lift pump having a lifting column 5 and means the column, the base of the column having at least one 6 in the column for rotating a mixture of slurry and air rising in means 9 to allow air to be bubbled into the slurry in the column. opening 8 through which slurry can enter the column and to cause the slurry in the column to be lifted. The rotating means may comprise a stationary helical vane. A method of treating a slurry comprises passing it through an air-lift pump while simultaneously rotating the resulting mixture of air and slurry, whereby the slurry is agitated and aerated. <IMAGE>
Patent GB-2257037-A (GB)
Title: Safety guard for the rotatable handgrip of a domestic tap
Inventor: SOPER GILBERT JEREMIAH DELVE
IPC: F16K35/10
Filed: 1992-05-18
Abstract: A safety-guard for a rotatable handgrip of a domestic tap comprises a cup-shape body (15) with a resiliently- deformable skirt for fitting loosely over the handgrip to cover it, the skirt being deformable into contact with the handgrip by a force greater than a predetermined force to allow the handgrip to be rotated with the body to operate the tap, and the skirt having sufficient stiffness to resist this deformation by a force less than the predetermined force, and the safety guard having means for resisting its removal from a tap to which it is fitted. <IMAGE>
Patent GB-2258763-A (GB)
Title: T/r module with error correction
Inventor: ANDRICOS CONSTANTINE
IPC: H01Q3/26
Filed: 1991-03-08
Abstract: A C-band transmit-receive module for an active aperture radar is provided employing gallium arsenide chips preferably manufactured by the Multifunction Self-Aligned Gate process and employing both open and closed loop error correction for both phase and amplitude to correct for errors due to temperature, power supply variations, operating bandwidth and phase states. In a second embodiment a power output amplifier is provided employing predriver (709), driver (710) and power amplifier (711) stages wherein the power amplifier or the power amplifier and the driver may be switched out of the circuit if not needed. The bias on the amplifier may also be lowered if not needed. This is done to increase efficiency and reduce temperature. In both embodiments, a class B amplifier is preferred. <IMAGE>