baber/WOPTO huggingface dataset:
Patent GB-2217553-A (GB)
Title: Trunked radio repeater system
Inventor: CHILDRESS JEFFREY SCOTT
IPC: H04L1/00
Filed: 1988-12-02
Abstract: A digitally trunked radio repeater system provides substantial improvements in timeliness of channel acquisition and channel drop, and in reliability of critical control signaling. The system uses a control channel to convey digital channel request and assignment messages between the central site and mobile transceivers. The mobile radio transceivers transmit channel requests on the control channel and switch to a working channel in response to an assignment message received on the control channel. Subaudible digital signals transmitted on the active working channels allow late entry, shifting to higher priority calls, and other advanced functions and high-speed data bursts may be included at a predetermined time within a subaudible digital signal frame. The receiver audio circuitry is muted during reception of such bursts. <IMAGE>
Patent GB-2215207-A (GB)
Title: Sustained release pharmaceutical dosage units
Inventor: BROOK MICHAEL GORDON
IPC: A61K9/22
Filed: 1989-01-27
Abstract: A sustained release pharmaceutical formulation is disclosed having the capability of a linear rate of drug release over a significant period (e.g. at least 20 hours). The formulation essentially comprises a shaped, solid formulation containing a drug and a non-cross-linked hydrophilic polymer which constitutes the binder for the formulation, said polymer having a swell factor between about 50 and 250 % such that when the formulation is contacted with body fluid it swells and becomes soft and rubbery but retains its integrity.
Patent GB-2228687-A (GB)
Title: Apparatus for playing a game
Inventor: SCOTT LESLIE ANN
IPC: A63F9/00
Filed: 1989-01-30
Abstract: Apparatus for playing a game comprises pointing means for indicating a plurality of directions or positions and a control element which is manipulated by a player, in accordance with rules for playing the game, so as to influence the direction or position indicated by the pointing means, by virtue of a first magnetic interaction between the control element and the pointing means, such direction and position being influenced also by a second magnetic interaction. In the preferred embodiment, two magnetic octagonal control elements are used to move a compass needle and the game is played on a playing surface comprising central, intermediate and outer portions which are stepped relative to each other, and are provided with segments of afternating colour. These segments together with the steps separating the portions define discrete playing positions for the control elements which may be moved towards, and away, and around the compass needle, as well as around their own axes to move the needle to point in a desired direction, for example at counters marked with letters which are arrayed around the needle, so as to spell a chosen word. <IMAGE>
Patent GB-2218622-A (GB)
Title: Wiper drive mechanism arrangement
Inventor: ISHIKAWA MASARU
IPC: B60S1/18
Filed: 1989-05-12
Abstract: A wiper drive mechanism comprising wiper motor 2, drive shafts 3a for wiper arms, and drive transmitting linkage 4 for transmitting drive from the motor to the drive shafts is associated with a frame 5 comprising a main central member 10 integral with casing 2a of the wiper motor and end members 11 connectable to the main central member and holders 3 in which the drive shafts are mounted. The wiper drive mechanism assembly may be attached to a car body via vibration- proof mountings 30. By using end members of different length, assembly of wiper drive mechanisms to different cars is said to be more cost effective. <IMAGE>
Patent GB-2223861-A (GB)
Title: Making a product having a multiplicity of fine lines
Inventor: HUTLEY MICHAEL CHRISTOPHER
IPC: G02B3/00
Filed: 1989-08-25
Abstract: A method of making an array of microlenses comprises forming an interference pattern having a mesh-like array of lines, recording said interference pattern in a layer of photoresist on a substrate, processing said first layer of photoresist to remove material selectively to leave a mesh-like formation of said photoresist material which corresponds to said lines of said interference pattern and which may function as a mesh-like array of astigmatic lenses, transmitting light through said array of astigmatic lenses to form a mesh-like real image made up of lines which are thinner than said lines of said interference pattern, and deriving said microlens array from said real image. The derivation of the microlens array may comprise recording the real image in a further layer of photoresist, removing the portions of the further layer activated by the real image and softening the remaining portions so that they form the microlenses.
Patent GB-2237016-A (GB)
Title: Glass-ceramic material and production thereof
Inventor: PROSSER DENNIS ROY
IPC: C03C10/00
Filed: 1989-09-07
Abstract: Glass-ceramic bodies are derived from a vitrifiable mixture containing slate, a nucleating agent and, if necessary to lower the melting point of the mixture to 1400 to 1450 DEG C, a flux. A homogeneous melt of the mixture is cast into a mould and allowed to cool to form a vitrified body which is subsequently devitrified by heat treatment.
Patent GB-2223018-A (GB)
Title: Acrylic silicon compositions used for oxygen-permeable contact lenses
Inventor: CHAPMAN DWAIN
IPC: C07F7/18
Filed: 1989-11-03
Abstract: The invention provides contact lenses made from compounds of the general formula:   <IMAGE>  wherein  R = alkyl, aryl or H,  R<1> = R or OR  Y = alkyl, vinyl, aryl, or fluoroalkyl   <IMAGE> A = Y, Z or H and B = oxyalkyl, oxyaryl, oxyfluoroalkyl, oxyalkylacrylate, alkyl esters, fluoroalkyl esters, or acrylic esters. The invention also includes oxygen-permeable contact lenses made from 10% to 90% by weight of a polymerizable acrylic or methacrylic ester, and 10% to 90% by weight of the compound above.
Patent GB-895627-A (GB)
Abstract: 895,627. Stamp-cancelling machines; feeding sheets. PITNEY-BOWES Inc. Dec. 14, 1959 [Dec. 31, 1958], No. 42464/59. Classes 100(1) and 100(2) [Also in Group XXX] A stamp cancelling machine comprises a feed table and a receiving table both of which support letters on their longitudinal edges, and means between the tables which advances letters from the feed table to the receiving table and simultaneously inverts each letter on a longitudinal axis. 'The machine has two cancelling units 10, 11 through each of which letters can be fed in a vertical position, stamps on either side of the letters adjacent to the lower edges thereof being sensed by devices 17, 18 and cancelled by dies 15, 16. Letters are fed from a stack 23a and through the cancelling unit 10 by belts 13. Gates 19 at the delivery end of the belts 13 are controlled by the sensing devices 17, 18 and if a stamp on a letter has been cancelled the gates deflect the letter into one of two stacking compartments 20, 21. If no cancellation has been made the letter is directed out of the unit 10 between feed rollers 22. Thereafter the letter passes through a device 12 which inverts it and is then fed through the cancelling unit 11 which functions in the same way as the unit 10; any letters directed out of the unit 11 between the feed rollers 22 have received no cancellation and are formed into a stack 25a. The device 12 has a base plate 26 on which are mounted a feed table 28 and a receiving table 39. A pair of posts 29 and a. pair of posts 30 are mounted on the base plate and carry at their top ends pulleys 31, 32 respectively which support an endless rubber or like belt 33 of circular cross-section, one or both of the pulleys being driven. The belt 33 is so disposed about the pulleys that the sections 33a, 33b travel in substantially the same direction and contact each other over a helical line. Additional guide pulleys 35, 36 are provided for the belt sections 33a, 33b. A letter L deposited on the feed table 28 by the rollers 22 is fed into the nip of the belt sections 33a, 33b which grip it about its longitudinal median line, if it is of normal size, and advance it towards the pulleys 32, the letter being inverted in the course of such advance owing to the helical line contact of the belt sections. The posts 30 are no longer than the posts 29 so as to allow for the inversion of a letter L<SP>1</SP> which is taller than normal. At the delivery end of the belt 33 the letter is gripped between two pairs of inclined rotating brushes 40, 41 which move it forwards and downwards until its lower edge contacts the receiving table 39 and its leading edge enters the nip of the belts 13 of the cancelling unit 11.
Patent GB-2241277-A (GB)
Title: Retaining clip with size reducing insert
Inventor: CARLISLE ALFRED JAMES
IPC: B62B9/00
Filed: 1990-02-06
Abstract: Clip for releasably snap engaging tubular or like elements, e.g. of a pram or pushchair hood comprises a main clip portion (10) whose base (12) will be mounted on one element and having a pair of resilient first limbs (16) to snap engage with the periphery of a first size of other element; and a supplementary portion (22) having a pair of supplementary limbs (24) which nest within the first limbs to form an insert adapting the clip for engagement with a smaller size of other element, mating formations (30), (28) resisting relation displacement of the two portions on assembly. <IMAGE>
Patent GB-2245847-A (GB)
Title: Stamping foil
Inventor: LOWDON DEREK MARVYN
IPC: B44C1/17
Filed: 1990-04-02
Abstract: A stamping foil for security labelling purposes comprises a flexible backing sheet, a marking layer of a verifiable or active substance and a release layer intermediate the backing sheet and the marking layer. The marking layer preferably includes a photochromic ink.
Patent GB-2231958-A (GB)
Title: Measuring fluorescence characteristics
Inventor: KOISHI MUSUBU
IPC: G01N21/64
Filed: 1990-04-06
Abstract: A fluorescent characteristic inspecting apparatus comprises a light source 12 for exciting a specimen via an optical system 14; a device 16 for moving the measurement position of the specimen; an optical system 18 applying photoluminescence from the specimen to a high speed optical detector 20 for detecting data on a time intensity waveform of the photoluminescence in synchronization with the operation of the light source; and a signal processing device 22 for analyzing the data on the time intensity waveform at a plurality of measurement points to obtain the spatial intensity distribution and lifetime distribution of the photoluminescence or the correlation distribution of both. A spectroscope 60 may be placed in front of a 2-D streak camera 20 which is triggered by a signal from a photodiode viewing a pulsed light source 12. A CCD camera viewing a fluorescent screen on the streak camera obtains the time and wavelength distribution of fluorescence from each point of the specimen. <IMAGE>
Patent GB-2241460-A (GB)
Title: A rotary die cutting apparatus
Inventor: HARDISTY BARRIE
IPC: B26D7/26
Filed: 1990-10-05
Abstract: Rotary die cutting apparatus comprises a driven rotary cylinder 10 on which is circumferentially mounted a removable forme 11 having knives 14 projecting radially therefrom. The forme 11 is magnetically retained on the surface of said cylinder 10 by a plurality of longitudinally extending stool bars 15, 16, 17 which locate within grooves (19 Fig 2) in the surface of the cylinder 10, each groove (19) coinciding with a plurality of longitudinally spaced magnets 20 which retain the forme 11 during rotation of the cylinder 10. The magnets 20 may be electro-magnets so that the forme 11 is released by switching off the current to the magnets, or alternatively permanent magnets so that a tool will be required to release the steel bars from the grooves (19). <IMAGE>
Patent GB-2250737-A (GB)
Title: Biocide
Inventor: RIMMER KAREN
IPC: A01N43/26
Filed: 1990-12-12
Abstract: A composition suitable for addition to an aqueous system comprises a dithiolan having the formula:   <IMAGE> wherein each x and y, which maybe the same or different represents flourine, chlorine or bromine, and an alkylthioalkyamine of the formula CH3-(CH2)x-S-(CH2) y-NH2 where x is an integer from 7 to 11 and y is 2 or 3.
Patent GB-2241340-A (GB)
Title: Method and apparatus for determining vehicle tyre wear patterns
Inventor: TIMMINS JOHN ANDREW
IPC: B60C11/24
Filed: 1991-02-25
Abstract: A method of determining the wear pattern of a vehicle tyre (10) comprises applying across the tread (18) of the tyre, an indicator line (12), operating the vehicle so that the tyre (10) rotates and engages a wearing surface, and inspecting the indicator line (12) to determine the amount of wear of the tyre at different positions (15, 16) across the tread (18). The line may comprise an indicating strip including a backing with an adhesive backing and layers of different coloured paint. The line may comprise paint sprayed on to the tyre, or a row of pads. <IMAGE>
Patent GB-2253744-A (GB)
Title: Scanning electromagnetic beam systems
Inventor: WHITEHURST JONATHAN
IPC: H01Q3/26
Filed: 1991-03-12
Abstract: A scanning electromagnetic beam system comprising a source of electromagnetic energy 25, a linear antenna array comprising a plurality of radiator elements 31-34, beamformer means 26 via which energy is fed from the source to the radiator elements of the array, phase control means for selectively controlling the phase of signals fed from the source via the beamformer means to the elements of the array, thereby to effect successive TO and FRO scans of the beam across a predetermined angular sector, amplitude control means for selectively controlling the amplitude of signals fed from the source via the beamformer means to the elements of the array thereby to effect a predetermined amplitude distribution across the array and modulator means effective to change the centroid of the distribution in successive TO/FRO scan pairs. <IMAGE>
Patent GB-2246578-A (GB)
Title: High strength aluminum alloy with good weldability
Inventor: NAM SOO WOO
IPC: C22C21/10
Filed: 1991-05-23
Abstract: An aluminum alloy with a good weldability and a high strength for use in high speed trains or automobiles consists of 3.5-5 wt% of Zr, 2-3.5 wt% of Mg, 0.5-1.2 wt% of Mn, 0.1-0.3 wt% of Zr, and less than 0.1 wt% of Fe, Si, Cr and Ti as additives, and the balance being substantially Al as a matrix.
Patent GB-2263775-A (GB)
Title: Strain measuring device
Inventor: OAKLEY JAMES EDWARD
IPC: G01B5/30
Filed: 1992-01-23
Abstract: A strain measuring device is attached with clamp screws 2 to the surface of a structure, which is thereafter subjected to a compressive stress. The separation of the screws along the longitudinal axis of the device defines a gauge length 4 which compresses in sympathy with the surface. Contraction of the gauge length is accommodated by an equivalent extension in a region 6 of reduced thickness and defined by U-shaped slot 5. This region has a strain amplification function and offers reduced resistance to an applied stress in comparison to both the bulk of the device and the structure itself. Strain gauges 8 located in the region 6 detect the strain. Jacking screws 9 enable adjustment to be made to compensate for bending strains introduced in the device when it is attached to a non-flat surface. The reduced thickness region 6 may be made of material with a lower modulus of elasticity than that of the frame. <IMAGE>
Patent GB-2263612-A (GB)
Title: Automatic milking apparatus
Inventor: GRIFFIN TONY KENNETH
IPC: A01J5/007
Filed: 1992-01-29
Abstract: An automatic milking apparatus, including a pulsator tap (26) or the like, and a control unit (38) effective to vary the milking pulsation characteristic in sympathy with the opening and closing of the liners.
Patent GB-2260690-A (GB)
Title: A tray suitable for use in a vehicle
Inventor: SMITH ARTHUR
IPC: B60N3/00
Filed: 1992-05-07
Abstract: A tray (10) is adapted for use in a car. The tray comprises support means (11) and a tray surface (12) receivable in the support means (11). The tray is supported in a substantially horizontal position and is thus available for use by passengers sitting in a back seat of the car. <IMAGE>
Patent GB-2256811-A (GB)
Title: Thin membrane distillation apparatus
Inventor: KUSAKABE FUMIYUKI
IPC: C02F1/04
Filed: 1992-07-02
Abstract: A thin membrane distillation apparatus comprises a decompression chamber which has plural rotatable thin membrane blades and is covered with a heating jacket; a waste inlet and an outlet for volatile compound disposed on the upper end of said decompression chamber; an air-tight chamber connected to the lower end of said decompression chamber via a first valve; an opening formed on the lower end of said air-tight chamber via a second valve; and a sludge breaking mechanism, disposed below said air-tight chamber, with a sludge breaking head movable between said opening and said air-tight chamber. The thin membrane distillation apparatus (1) includes a decompression chamber (3), a waste inlet (5), an outlet (4) for volatile compounds, an air-tight chamber (9), and a breaking mechanism (10) with a screw head (10a) movable into the airtight chamber (9). <IMAGE>
Patent GB-2259794-A (GB)
Title: Virtual mode computer system having interrupt related instructions
Inventor: ALPERT DONALD B
IPC: G06F9/46
Filed: 1992-08-19
Abstract: A computer system including a given microprocessor is specifically designed to operate in a virtual operating mode (or protected mode) that allows a software program previously written for an earlier designed single program microprocessor to execute in a protected, paged, multi-tasking environment under a particularly designed host operating software program. The system also includes means for executing CLEAR INTERRUPT (CLI) and SET INTERRUPT (STI) instructions, from the previously written program by means of emulation software forming part of the host program. The CLI and STI instructions are handled in a way which expedites their execution without appreciably sacrificing compatibility between the given microprocessor and earlier microprocessors. Use is made of a virtual interrupt flag (VIF) bit and a virtual interrupt pending (VIP) bit in a register 30''. If the VIP bit is in its 'non-pending' state, the state of the VIF bit can be changed without using the emulation software. If the VIP bit is in its 'pending' state, then the STI instruction can be executed and an awaiting interrupt serviced by using the emulation software without first changing the VIF bit from its CLI state to its STI state. <IMAGE>
Patent GB-2270718-A (GB)
Title: Single crystal turbine blades having pedestals.
Inventor: PATEL RAJESH THAKORBHAI
IPC: F01D5/18
Filed: 1992-09-22
Abstract: In a single crystal turbine blade having cooling passages therein, integral pedestals 48 are provided, extending between opposed walls of the passages. The pedestals are arranged so that they are angled (A, B) obliquely to the opposing walls 52, 50 of the passages, and, in particular, the axes of the pedestals are directed towards the epicentre of crystal growth of the blade. The arrangement is stated to minimise recrystallisation during casting of the blade, particularly where the pedestals join on to the inner surfaces of the blade, and adjacent their mid-points. <IMAGE>
Patent GB-2261663-A (GB)
Title: A polysaccharide derivative, a neutralized polysaccharide derivative and a composition comprising the neutralized polysaccharide derivative
Inventor: UEDA IKUO
IPC: C08B13/00
Filed: 1992-11-13
Abstract: The polysaccharide derivative has hydrophilic functional groups and nitrate groups per one repeating unit in the following range:       0.2</=x</=1.5,0.4</=Y</=2.2,X+Y</=3: wherein X and Y represent the number of hydrophilic functional groups and nitrate groups, respectively. The derivative may be prepared carboxyalkylcellulose, chitosan, alginic acid, pectic acid and starch derivatives. The neutralized polysaccharide derivative is used in   (1) a binder composition containing the neutralized polysaccharide and water; and (2) a vehicle composition containing the neutralized polysaccharide, a resin, an organic solvent and water. The vehicle composition has excellent properties such as drying characteristic, pigment dispersibility, compatibility with water soluble resins and thixotropic property, and it can form a clear continuous film having excellent heat resistance and blocking resistance.
Patent GB-2261579-A (GB)
Title: Authentication system for digital cellular communications
Inventor: DENT PAUL WILKINSON
IPC: H04K1/02
Filed: 1992-12-18
Abstract: A system for the authentication of mobile stations and base stations in a cellular communications network. The system includes an algorithm which generates not only a key dependent response to a random challenge, but also a temporary conversation key or call variable which may be used to encipher traffic in the network. To protect against clones in the network, the algorithm uses a rolling key which contains historical information. A bilateral authentication procedure may be used to update the rolling key and to generate a new conversation key. <IMAGE>
Patent GB-2265038-A (GB)
Title: Tracking and/or identification system
Inventor: HOPPER ANDREW
IPC: G07C9/00
Filed: 1993-03-08
Abstract: A tracking and identification system comprises a plurality of active badges carried by carriers, which may be humans and/or animals and/or objects within a predetermined area, together with a plurality of transceiver sensor stations within the area and in communication with a master control centre. Each badge has an IR transmitter (30) for transmitting a unique IR identification signal, and an astable oscillator (16) which, via a microprocessor (18), causes the IR identification signal to be spontaneously transmitted on a periodic basis, for example every 10 seconds. Additionally, by means of push buttons (14), the IR identification signal can be transmitted by a user prompt, and, by means of an RF field detector (12), the IR identification signal can be transmitted due to entry of the badge into the RF field of an RF field generator.
Patent GB-2265726-A (GB)
Title: Head-up display system
Inventor: CLARK MICHAEL GEORGE
IPC: G02B27/00
Filed: 1993-03-19
Abstract: A head-up display system has means for providing a multicolour display, and a combiner in the form of a rugate filter having a reflection characteristic with a plurality of narrow reflection bands capable of reflecting different respective wavelengths generated by the display. The invention also includes within its scope ruguate filters comprising, on a supportive substrate, a deposited layer having a refractive index which varies as a function of optical thickness so as to provide multiresponse reflection characteristic.
Patent GB-2265111-A (GB)
Title: Letter blank
Inventor: DA COSTA BARON DAMION ALEXANDE
IPC: B42D15/08
Filed: 1991-10-30
Abstract: A letter blank has leading and trailing edges (1 and 2) and side edges (3 and 4). The blank includes a central oblong rectangular letter portion (108) and marginal edge portions in the form of gummed marginal flaps (7, 8 and 9). The letter portion (108) can be folded into three equal portions by folding along two crease lines (5 and 6) to form its own envelope which can be secured by means of the flaps. The blank meets specified criteria which enables it to be printed by an offset litho process, and further blanks are described which can be similarly printed.
Patent GB-2278211-A (GB)
Title: Memory management system
Inventor: PARDO ILAN
IPC: G06F12/1027
Filed: 1993-05-04
Abstract: A memory management system 4 comprises a memory address translator 8 which matches a received virtual address to a virtual address of a memory address entry which also comprises a physical address and a valid bit. The received virtual address is mapped onto the matched physical address depending on the value of the valid bit. The memory address translator 8 allows for the memory address entries to be validated or invalidated in parallel by using bits of a control word held in a control register 16 to write to the valid bits of the memory address entries. The validation/invalidation is determined by the control bits which are programmable, and so memory address entries can be allocated in a generalised manner. <IMAGE>