baber/WOPTO huggingface dataset:
Patent GB-2228003-A (GB)
Title: Pesticidal nitroethene compounds
Inventor: CAPPI MICHAEL WILLIAM
IPC: C07D213/61
Filed: 1989-02-13
Abstract: Nitroethene compounds of general formula   <IMAGE> wherein n is 0 or 1, X represents a sulphur atom or a group N-R<4>, R<1> represents an optionally substituted pyridyl group, R<2> represents a hydrogen atom or a C1-6 alkyl group, R<3> represents a methyl or ethyl group and R<4> represents a hydrogen atom or a methyl or ethyl group, have pesticidal, particularly insecticidal, activity and can be incorporated into pesticidal compositions.
Patent GB-2217096-A (GB)
Title: Magnetic record medium and method of recording and reproducing security information
Inventor: FUJITA MINORU
IPC: G11B20/14
Filed: 1989-03-22
Abstract: A magnetic record medium has security information recorded on it as a combination of changes in its magnetisation condition having a steep (data 1) and shallow (data 0) gradient. Such security information is reproduced by a detecting means which has a differentiating function and produces output pulses (er). To record security information a magnetic writing means (1) (Fig 1A) writes information on a magnetic record medium (2) by a combination of steep and shallow gradient changes of write current. <IMAGE>
Patent GB-2231474-A (GB)
Title: Method and apparatus for performing address transformation of projection data for use in positron computed tomography system
Inventor: YAMASHITA TAKAJI
IPC: G06T11/00
Filed: 1989-04-21
Abstract: A method and an apparatus for performing address transformation of projection data for use in a positron CT system, where plural detectors are classified into plural detector groups (Gi, Gj). In this system, a polar coordinate of the addresses assigned to paired detectors (xi, xj) which detect coincident events of gamma-ray emission is determined by adding a first encoded signal representing a first polar coordinate of the line (A) joining the reference points of the paired detector groups (Gi, Gj) including the paired detectors and a second encoded signal representing a second polar coordinate of the deviation of the line (B) joining the two detectors from the line (A) joining the reference points. The second encoded signal is obtained on the basis of address signals representing the addresses of the two detectors and a third encoded signal representing the angle relationship of the paired detector groups which is preliminarily stored in a memory. The polar coordinate thus obtained is outputted as a fourth encoded signal and used in an image reconstruction process of the positron CT system. <IMAGE>
Patent GB-2234055-A (GB)
Title: Portable illumination/alarm device
Inventor: HWANG FENG-LIN
IPC: F21V27/00
Filed: 1989-07-04
Abstract: A portable illumination/alarm device comprises:   (a) a housing (1) containing the components of the device and arranged to be detachably secured to the body, preferably the wrist or ankle, of a user; (b) a light source (12) connectable to a power source (5) by means of a power lead (13) which is retractably extensible from the housing (1); (c) a storage arrangement for storing the power lead (13) in its retracted condition within the housing (1) and for allowing the lead (13) to be extended from the housing; (d) means (14) arranged to clamp the lead (13) in an extended condition with respect to the housing; and (e) circuit means (4) arranged to permit the light source (12) to be used in a regular manner under normal operating conditions and to cause the light source (12) to flash and/or an audible signal to sound under emergency conditions.   <IMAGE>
Patent GB-2221693-A (GB)
Title: AZO dyes containing reactive aziridinyl groups
Inventor: HALLAS GEOFFREY
IPC: C09B62/66
Filed: 1989-07-11
Abstract: An azo dye free from carboxylic and sulphuric acid groups having the general formula:   <IMAGE>  wherein R<1> represents a hydrogen atom or an alkyl group which may be further substituted by an alkoxy or aryloxy group,  R<2> represents a hydrogen atom or an unsubstituted alkyl group, R<3> represents a hydrogen or halogen atom or an alkyl or an alkoxy group, R<4> represents a hydrogen or halogen atom or an alkyl, alkoxy or alkanoylamino group, or atoms to complete with the adjacent ring carbon atom a fused aromatic ring,  D represents the residue of a diazo component. The dyes are applicable to hydrophobic fibres (e.g. polyester), and to natural cellulosic and proteinaceous fibres.
Patent GB-2235184-A (GB)
Title: Composite cap assembly
Inventor: DUDZIK HENRYK
IPC: B29C45/14
Filed: 1989-08-15
Abstract: In a composite cap assembly comprising a skirt 13 with a substantially gas-impermeable sheet over member 125 secured in contact with the inner surface of the top 12 and peripheral sealing means for sealing within the cap, the cap has an annular projection 115 spaced radially inwardly of the skirt and overlying the cover member 125, the projection 115 being supported by fingers 126 extending from the skirt. The cover member is preferably fused to the cap top and to the projection 115 and fingers 126. <IMAGE>
Patent GB-2230067-A (GB)
Title: A combined drive-slip control (ASR) and anti-lock braking system (ABS)
Inventor: RESCH REINHARD
IPC: B60T8/175
Filed: 1990-01-08
Abstract: in a vehicle having an hydraulic dual circuit brake system, in which, on the brake circuit II of the driven vehicle wheels, the ABS works on the return-flow principle and the ASR on the principle of decelerating again a vehicle wheel tending to spin by subjecting its wheel brake to pressure, for the drive-slip control mode the return pump 34 of the ABS, which is assigned to the brake circuit of the driven vehicle wheels and the inlet supply of which takes place via a precharging pump 91 in the ASR mode, is utilized as an auxiliary-pressure source. By means of an ASR control valve 87, the master cylinder 18 can be shut off from the main brake line 62, 63 of the brake circuit of the driven vehicle wheels. A valve arrangement 103, 104 controlled by the outlet pressure of the precharging pump 91 functions during normal braking, when pump 91 is idle, to connect the outlet non-return valve 93 of the precharging pump and an ASR outlet valve 97 to a pressure-medium line subjected to brake pressure thus testing those components for leakage during normal braking, and in the drive-slip control mode, functions to connect the outlet of the precharging pump 91 to the inlet of the return pump 34 of the brake circuit II. 
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Patent GB-2228161-A (GB)
Title: Adaptive colour decoder
Inventor: ILLETSCHKO GERHARD
IPC: H04N9/64
Filed: 1990-01-10
Abstract: In a circuit arrangement for decoding a colour television signal obtained by scanning a still picture, e.g. a slide, the colour television signals FBAS is converted into a digital video signal in an A/D converter 2. A frame store 11 for delaying the digital video signal is provided and a luminance signal Y is formed at the output of an adder 14 acting on complementary amounts of the delayed and undelayed signals as determined by coefficients K & (1-K) supplied to multipliers 13, 15, the output of adder 14 constituting the input to the store 11. At intervals, e.g. when a slide is changed, K is zero (so that only input 1 is fed to the store) rising over a number of fields to units (so that output 16 is a frozen signal continually circulated in elements 11, 13, 14). In a second embodiment, the input and output of a 2 frame delay are simply added and subtracted to provide Y, U and V components of a PAL signal. The outputs of a still picture decoder and a conventional decoder (e.g. line comb, or notch) may be fed to a cross fader controller by a motion detector (Fig 8). 
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Patent GB-2231016-A (GB)
Title: A towable trolley
Inventor: EDMONDSON STEVEN
IPC: B62K27/12
Filed: 1990-04-24
Abstract: There is disclosed a towable trolley (10) having a wheel supported frame (11), a container body (12) mounted on the frame (11), a forward prolongation (15) of the frame including a forwardly and upwardly extending support tube (16) merging into a horizontal handle (17), and a towing hitch (18) for coupling the handle to a towing connection on the frame of a two or three wheeled towing vehicle. Handle (17) is located above the general level of the trolley frame so as to be capable of being attached in the general region of the seat of the towing vehicle, but when uncoupled from the towing hitch the handle enables the trolley to be manually propelled. The hitching device (18) is semi-permanently attached to the towing connection on the towing vehicle, but has a releasable coupling engagement with the handle (17) and also includes a rotary coupling (20) permitting relative rotation between the handle (17) and the hitching device (18). The towable trolley of the invention therefore can be readily coupled and uncoupled from the towing vehicle, can enable the coupled combination of vehicle and trolley readily to negotiate bends, and can be readily uncoupled and then manually propelled via handle (17), which also forms part of the releasable engagement between the trolley and the towing hitch.
Patent GB-2234127-A (GB)
Title: Compensating for temperature-dependent frequency shift of a filter in a receiver
Inventor: HASHIMOTO KAZUYA
IPC: H03L1/02
Filed: 1990-07-18
Abstract: In a superheterodyne receiver, a control circuit 50 is provided with a temperature detector 52 and a memory 58 in which temperature related control data is stored. The control circuit outputs a control signal, which varies with temperature, to a local oscillator 14 which is connected with a mixer 10. The mixer receives an incoming radio frequency signal and a local frequency signal from the local oscillator and outputs an IF signal. The local oscillator is controlled in a manner wherein the frequency of the IF signal parallels the temperature dependent shift in center frequency of a surface acoustic wave type IF filter 16. A second mixer 30 and local oscillator 60 may also be provided. A second IF filter (34) (fig 8) may be provided with the same form of shift compensation. <IMAGE>
Patent GB-2246311-A (GB)
Title: Multi-function electric tool
Inventor: HU CHENG-TE
IPC: B25F3/00
Filed: 1990-07-25
Abstract: The tool has an electric motor 10 installed in a main body 1, with an output gear 14 has one 2 of various tool heads attached to it, with varying gearing 20 so that each tool head may have its own rotating speed to drive its tool. A safety switch 11 is spring biassed to enter a blind hole 21 in a head upon proper alignment to enable contacts 110, 111 to abut to allow motor operation. <IMAGE>
Patent GB-2246921-A (GB)
Title: Demodulation of amplitude modulated carrier waves
Inventor: DENT PETER RICHARD
IPC: H03D1/00
Filed: 1990-07-25
Abstract: An amplitude modulated carrier wave 1 is demodulated by a process including sampling and digitising it 2 at a rate exceeding the Nyquist rate for the signal, and the digitised samples are used to produce two successions of values, the first 4 at a rate at least twice that of the highest modulation frequency (for a short term energy calculation) and the second 5 at a rate that is less than half the lowest modulation frequency (for a long term energy calculation), each value being proportional to the mean energy of the digitised samples which have occurred since the last value in the same succession was produced. An output signal representing the modulation signal is produced by calculation 6 from the difference between the concurrent values from the two successions. Digital filtering 3 may be applied to the digitised samples before processing to limit the bandwidth of the demodulator to that of the modulated carrier wave. Digital smoothing may be applied after the calculation to reduce noise introduced by the calculation processes. The output signal may be converted to analogue form with a digital to analogue converter 9.   <IMAGE>
Patent GB-2240234-A (GB)
Title: Selective colour or monochrome facsimile system
Inventor: SUGIURA SUSUMU
IPC: G06F3/08
Filed: 1990-10-29
Abstract: At a transmitter RGB colour signals 306 from the scanning of an original are converted 314 to black and white signals, and the two types of signal undergo respective different types of compression 313, 315 before storage on a hard disc prior to transmission. When either parts, or the whole, of the original are automatically detected 312 as being in black and white (for data reduction) or in response to a manual input (for more rapid data transmission) or if the receiving station comprises only a monochrome station, only the path through compression unit 315 may be selected. If the receiver is for colour, only the path comprising unit 313 may be selected when the original, or at least those parts presently scanned, are coloured. If the receiving station comprises both monochrome and colour apparatus, routing of the two types of signal may be controlled appropriately. The monochrome information may be transmitted by G4 (digital ISDN) or G3 (analogue) standards. <IMAGE>
Patent GB-2249928-A (GB)
Title: Identification signals in digital audio signals
Inventor: EASTTY PETER
IPC: H04R3/00
Filed: 1990-11-13
Abstract: Identification audio signals are inserted into uncommitted bits of a digital audio signal such as an AES/EBU format signal in which the first four bits of the 24-bit audio sample data space may be available. An identification signal insertion circuit in a digital microphone device 10 includes a microphone 12 for both the main audio sample data (passing via an A/D converter 14 and a format encoding circuit 16) and the identification audio signal. When a switch 24 is activated, a message spoken into the microphone 12 is digitised and stored in a memory 20, and is subsequently read out repeatedly, preceded by an identification burst produced by an ident burst generator 28. The repeated message forms the identification audio signal which is supplied to an auxiliary input of the format encoding circuit 16 for appropriate formatting in the uncommitted bits of the digital audio signal. A direct message signal can temporarily override the identification audio signal. <IMAGE>
Patent GB-2250771-A (GB)
Title: Fixing for a recessed ceiling unit
Inventor: CARRUTHERS IAN
IPC: F16B21/09
Filed: 1990-11-14
Abstract: The present invention relates to method and apparatus for fixing a recessed ceiling unit, such as a lighting unit or air conditioning unit, in place. The present invention provides a method of fixing a recessed ceiling unit in place comprising providing a keyhole 2 having a slot 20 and larger opening 21 in the unit and passing a fastening element 1 through the opening 21 to protrude from the housing to engage a ceiling support, the fastening element 1 having at one end a clamping means with a shoulder 4 and head 9. The method further comprises manoeuvring the element into the slot to locate the unit in place and operating the clamping means to clamp the housing between the head part and the shoulder part. The invention extends to a method of fixing a unit having a pre-formed keyhole. Additionally, the invention extends to a combination of a unit and a fastening element, and a fastening element per se, for use in such methods. <IMAGE>
Patent GB-2240443-A (GB)
Title: Vehicle position and heading determining device incorporating image edge detection
Inventor: NINOMIYA YOSHIKI
IPC: G05D1/02
Filed: 1990-12-28
Abstract: A camera 1 mounted on a self controlled vehicle produces an image which is analysed 2 to extract edge segments. The detected edge segments are analysed in guide sign searching means 3 by clustering and selecting means 31, 32 which determine segments which are extensions of each other and combine those segments to produce longer edge segments. From the location of the longer edge segments, which correspond to guide lines or edges of structures the position and heading of the vehicle is calculated. Displacement of the vehicle can be determined from wheel rotation and the system can be used to compose and update estimated and observed positions. <IMAGE>
Patent GB-2251207-A (GB)
Title: Piledriver pad
Inventor: TAYLOR KENNETH JOHN
IPC: E02D13/10
Filed: 1990-12-28
Abstract: A piledriver pad comprises strip (2) spirally wound from cured elastomeric sheet which is internally reinforced, as with metal gauze or fibres of glass, metal, ceramic material, mineral silicate, aramid or polyacrylonitrile and facing plates (5, 6) of metal to protect the strip. The spirally wound strip may enclose a core (7) such as of subdivided metal (e.g. metal waste) or of superimposed metal discs. The construction avoids that waste of reinforced cured elastomeric sheet which is entailed when the disc-forms customary for piledriver pads are cut from it. <IMAGE>
Patent GB-2241284-A (GB)
Title: Protective guard for doors and windows
Inventor: MCDONALD LAWRENCE JOSEPH
IPC: E06B7/28
Filed: 1991-01-29
Abstract: A protective guard for use for example with doors and windows has two flat plates 14 on opposite sides 16 of the door 10 and connected by an internally threaded spacer sleeve 18 with threaded elements 19, 21 having stems engaged in the sleeve and heads overlying the plates. One element 21 may have a square section stem portion 23 in a non-circular aperture in the plate 14. The guard may be associated with locks and hinges or around a letter-box in the door. <IMAGE>
Patent GB-2241744-A (GB)
Title: Gas turbine engine exhaust nozzle and method of operation
Inventor: TAYLOR JOHN BAILEY
IPC: F02K1/12
Filed: 1991-02-11
Abstract: A method for spoiling thrust at ground idle operating condition comprises the step of positioning a secondary exhaust flap 64 of an exhaust nozzle to form a diffuser (68) (Figs 4 to 6) for the combustion gases 18 at the ground idle operating condition for maintaining attachment of the combustion gases along the secondary exhaust flaps 84 for spoiling thrust. An exhaust nozzle is provided wherein secondary exhaust flaps 64 are positionable in part independently of primary exhaust flaps 62-so that the primary and secondary flaps may be disposed together in different positions during ground idle, dry, and augmented operating conditions of the engine. Thrust spoiling allows the engine to be operated at relatively high core speeds for providing bleed-air at relatively high pressure or electrical power from a generator, or both, without attendant relatively high thrust from the engine at the ground idle operating condition. <IMAGE>
Patent GB-2253279-A (GB)
Title: A light modulator
Inventor: PATON ALEXANDER CHARLES
IPC: F21V11/08
Filed: 1991-02-27
Abstract: A light modulator (1) for positioning adjacent a lens to regulate the light passing through the lens, comprising a plurality of leaves (7, 9) for defining an aperture (19) through which light passes, during use, and rotatable slide plate (5) with holes (15a) which accommodate drive pins so that when the plate is moved by moving handle (17) the pins cause the leaves (7, 9) to pivot about pivot pins (11) to vary the opening of the aperture (19), so that the aperture (19), forms arms (21) radiating outwardly from its centre to enable light passing through the aperture (19) to spread across the lens such that, when the positions of the leaves (7, 9) are altered, the light on the lens is evenly modulated. <IMAGE>
Patent GB-2242632-A (GB)
Title: Tracheal tube
Inventor: INGLIS TIMOTHY
IPC: A61M16/04
Filed: 1991-04-10
Abstract: There is disclosed a double-walled tracheal tube (10, 20) which is intended for child or adult use, and which comprises a tubular outer portion (11, 21), and an inner tubular portion in the form of a lining (12, 22) which is removably mounted therein to permit withdrawal of the inner tubular portion when a build-up of secretion thereon has occurred, in which the inner tubular portion is arranged within the outer portion in such a way as to promote substantially laminar gas flow through the tracheal tube or thereby to promote substantially turbulence free gas flow in either direction and minimise the lifting-off of droplets of secretions on the internal wall of the tube. <IMAGE>
Patent GB-2244113-A (GB)
Title: A piston of changeable compression height
Inventor: SCHMIDT DIETER
IPC: F02B75/04
Filed: 1991-05-01
Abstract: A piston of changeable compression height has an arrangement for controlling the oil flow between two control chambers 7, 8 of the piston. In order to achieve a simple and insensitive construction of the control devices for this oil flow between the control chambers, it is proposed to employ a valve chamber which comprises a hollow space 10 and has in each case at least one oil bore 19, 20 leading to the first and second control chamber 7, 8 respectively, the bars 19, 20 being restrictive and lying at right angles such that flow from the second to the first chamber is restricted while flow from the first to the second is relatively unrestricted. <IMAGE>
Patent GB-2255410-A (GB)
Title: Digital sensors
Inventor: ELLIS DAVID JOSEPH
IPC: G01P21/02
Filed: 1991-05-01
Abstract: A sensor 20, e.g. a wheel speed sensor, for use in a motor vehicle, produces a binary output signal which varies with the parameter to be sensed. In order to distinguish between the inactive state of the sensor and failure of the sensor, a diode 22 causes a steady offset voltage to be superimposed on the output signal of the sensor so that in both binary states of the signal output, the signal level differs from ground. The signal level may be compared with a reference level in a comparator (34, Fig. 5 not shown) to determine failure of the sensor. <IMAGE>
Patent GB-2246145-A (GB)
Title: Nickel-born alloy composite slidable surface
Inventor: TSUCHIYA TAKEJI
IPC: C25D15/02
Filed: 1991-05-02
Abstract: Slidable members, such as piston rings and cylinder liners made from cast iron or steel, have their slidable surfaces coated with a composite nickel-boron plate which is composed of a nickel alloy matrix containing 0.1 to 10 wt.% boron, and 5 to 30 vol.% of solid particles dispersed in the matrix. The particles are hard particles and/or solid-lubricant particles 0.1 to 10  mu m in diameter. The boron in the nickel alloy matrix increases hardness, and improves abrasion-, seizure- and corrosion-resistance.
Patent GB-2248241-A (GB)
Title: Cultivation method for preparing an oral live typhoid vaccine
Inventor: PARK BONG WHA
IPC: A61P31/04
Filed: 1991-08-19
Abstract: A cultivation method for obtaining oral live typhoid vaccine comprises the steps of cultivating seed bacteria obtained from typhoid strain Ty21a in BHI medium, suspending the cultivated bacteria in protective medium and lyophilizing the suspended bacteria in an ampoule, reviving the lyophilized bacteria and inoculating the revived bacteria in production medium, cultivating the bacteria in a fermentor, and lyophilizing the bacteria and formulating the bacteria for oral use. The preferred protective medium is composed of 8% lactose, 1% carboxymethyl cellulose (or 1% gelatin), 5% skimmed milk, 0.2% MgSO4.7H2O and 1% monosodium glutamate. The preferred growth medium is composed of 37g BHI, 5g L-lysine, 30g sorbitol, 1.5g K2HPO4, 0.5g MgSO4 and 1 litre distilled water pH 7.0. The cultivating temperature in the fermentor is controlled so that it is 30 DEG C for the first six hours, 25 DEG C for the next two hours and 20 DEG C for the final fourteen hours.
Patent GB-2260588-A (GB)
Title: A clutch cable adjuster
Inventor: CURREN RICHARD
IPC: F16C1/22
Filed: 1991-10-09
Abstract: A clutch cable adjuster comprises outer and inner tubular members (28, 30), each attached to part of the cable sleeve (24, 26), which slidingly fit one inside the other, and a spring (50) acting against abutments (38, 48), on the tubular members to urge them apart. A circlip (52) placed in one of a plurality of grooves (44) in the inner tubular member prevents the tubular members from moving together beyond a set point. On removal of the cirlip (52) the tubular members adopt an adjusted relative position under the influence of the spring (50) and the circlip can be replaced in a suitable groove (44).