baber/WOPTO huggingface dataset:
Patent GB-2287370-A (GB)
Title: Amplifier circuit with feed-forward linearity correction
Inventor: GREEN LESLIE OWEN
IPC: H03F1/32
Filed: 1993-07-23
Abstract: A differential amplifier with feed-forward linearity correction is provided, including a main amplifier 22 having a pair of first amplifying devices configured as a differential pair to provide a differential output based on a differential input; a pair of correction amplifiers 23, 24, each for respectively monitoring a characteristic of one of the main amplifying devices and for providing a linearity correction signal to the differential output as a function of the characteristic; and wherein each of the correction amplifiers includes a pair of second amplifying devices configured as another differential pair, the another differential pair including an input for monitoring the respective characteristic and an output for providing the linearity correction signal. In addition, an amplifier is provided including an amplifier with feed-forward linearity correction, comprising a main amplifier including an amplifying device for providing an amplified output based on an input signal; a correction amplifier for monitoring a characteristic of the amplifying device and for providing a linearity correction signal to the output as a function of the characteristic; and wherein the correction amplifier includes a pair of second amplifying devices configured as a differential pair, the differential pair including an input for monitoring the characteristic and an output for providing the linearity correction signal. <IMAGE>
Patent GB-2280506-A (GB)
Title: Thermostatic device
Inventor: HEMMERICH JOHANN LUDWIG
IPC: G01K17/00
Filed: 1993-07-29
Abstract: A temperature regulating device which facilitates the maintainance of a very stable isothermal environment for an item, apparatus or facility or a constant rate of temperature change comprises a block of material having no internal heat sources, a thermal conductivity greater than 100 Wm<1>K<-1> and a specific heat capacity greater than 400JK<-1> kg<-1>. The block is surrounded by means for measuring the heat flow to and from the block and the device is further provided with means for generating a signal proportional to said heat flow and means for interfacing with the controller of a heating or cooling means associated with the item, apparatus or facility. In a calorimeter, an aluminium block (6) is surrounded by thermo piles (10). The calorimeter body (2) is surrounded by a heater (12). A sample is introduced into a chamber (4) surrounded by thermopiles (8). A circulating heat transfer fluid may be used. The device may be used in clocks. <IMAGE>
Patent GB-2280808-A (GB)
Title: A filter and a radio communications device comprising the same.
Inventor: KOENIG MATTHIAS
IPC: H03H7/12
Filed: 1993-08-07
Abstract: To provide a low pass filter (10) with good harmonic rejection and minimal insertion loss, a relatively low impedance (L6) is selectively switched in parallel with a shunt impedance (L3) located in a network of the filter (10), whereby the series resonant frequency provided by the shunt impedance in combination with a relatively high impedance point is altered and the filter characteristic is changed; whereby the passband is selectively widened and narrowed whilst stopband rejection is kept below a specific level thereby filtering out harmonics in the stop band. In a radio communications transceiver, Fig 4, not shown, a microprocessor (48) is used to control the switching voltage Ux in response to a transmission frequency. <IMAGE>
Patent GB-2269564-A (GB)
Title: Safety unit for coupling toothed gears.
Inventor: EHRHARD TONI
IPC: B41F13/00
Filed: 1993-08-09
Abstract: A safety device far coupling decoupled toothed gears in a gear train of a rotary printing press is designed to guarantee sure positioning of uncoupled toothed gears on radial coupling into a gear train. In a fixed frame a cylinder provided with a toothed gear (14) is rotationally mounted. A segment ring (11), which is arranged on the end face of the cylinder, has at least one cutout (12). In a movable frame part (3), a second cylinder, provided with a toothed gear (15), is rotationally mounted. Arranged on the frame part (3) is a spring pin (13) matched to the segment ring (11), which on coupling of the frame parts travels into the cutout (12) and couples the toothed gears (14, 15) exactly to a geartrain. <IMAGE>
Patent GB-2269596-A (GB)
Title: Fibre-reactive disazo dyestuffs
Inventor: NUSSER RAINER
IPC: D06P3/66
Filed: 1993-08-10
Abstract: Fibre-reactive disazo compounds of the formula   <IMAGE> in which the symbols are as defined in the specification, which compounds are in free acid or salt form, and mixtures thereof, are useful for dyeing or printing hydroxy group- or nitrogen-containing organic substrates, for example leather and fibre material comprising natural or synthetic polyamides or natural or regenerated cellulose; the most preferred substrate is a textile material comprising cotton.
Patent GB-2271755-A (GB)
Title: Welded pallet.
Inventor: LEVER PAUL
IPC: B65D19/00
Filed: 1993-09-28
Abstract: A method of forming a plastics pallet is disclosed. The method comprises forming individual injection moulded elements (11, 14, 16) and securing the components together to form a finished pallet by a combination of hot rod and fusion welding. The elements which form upper and lower load bearing frames (12, 13) of the pallet are secured at mitre joints (17) to provide strength. The pallet has spacers (16) between upper and lower frames (12, 13) and slats (14) welded across the upper frame. <IMAGE>
Patent GB-2271225-A (GB)
Title: Power supply system for arcjet thrusters
Inventor: PARK JOHN NORTON
IPC: G05F1/59
Filed: 1993-09-29
Abstract: A power supply system for thrusters (e.g., arcjet thrusters) in a spacecraft system comprises redundant power supplies 20, 30 that share the power distribution function to the thrusters. Each power supply comprises a plurality of parallel-connected power supply subunits 21 - 25, 31 - 35, of which the combined power output capability exceeds the required maximum power demand by at least one subunit capacity for each arcjet thruster in the system. Each power supply subunit comprises a lightweight, high-frequency, soft-switching power supply such as an FET inverter (Q1 - Q4, Fig 3) having a rectified output circuit (46). For arcjet systems comprising arcjet thrusters that do not operate simultaneously, relays 50, 52 are employed to switch between thrusters. Additional subunits (26, 36, Fig 4) may be added to each power supply, such that each power supply has a redundancy of two units. <IMAGE>
Patent GB-2272912-A (GB)
Title: Thin film forming apparatus using laser
Inventor: HARUTA KENYU
IPC: C23C14/22
Filed: 1993-11-29
Abstract: A thin film forming apparatus using laser includes a chamber (1), a target (5) placed therein, a laser light source (10) for emitting laser beam to target (5), and a substrate holder (3). When target (5) is irradiated with laser beam (16), a plume (15) is generated, and materials included in plume (15) are deposited on the surface of a substrate (2) held by substrate holder (3). The laser beam emitted from laser light source (10) has its cross section shaped to a desired shape when passed through a shielding plate (4804), for example, so that the surface of the target (5) is irradiated with the beam having uniform light intensity distribution. Therefore, a plume (15) having uniform density distribution of active particles is generated, and a thin film of high quality can be formed over a wide area with uniform film quality, without damaging the substrate. Many other variations of thin film deposition employing a laser are disclosed. <IMAGE>
Patent GB-2273573-A (GB)
Title: Method of recognising injection valve leakage
Inventor: DENZ HELMUT
IPC: F02M65/00
Filed: 1993-12-17
Abstract: A method of recognising injection valve leakage in an internal combustion engine comprises the step of causing all engine cylinders, even those into which no injection has taken place, to be subject to ignition under predetermined conditions during the engine starting operation. A rotational speed measurement and monitoring takes place in such a manner that increase in rotational speed caused by ignition in a cylinder without injection is recognised. The method can be carried out under the control of a control device of the engine and can be adapted to different requirements; such as being performed on each start or only on each mth start. The activation of the method can be restricted to certain engine temperatures or temperature range.
Patent GB-2285088-A (GB)
Title: Connector
Inventor: HUANG YU-HWEI
IPC: A44B11/25
Filed: 1993-12-22
Abstract: A connector comprises a hollow cylindrical casing 300 having an annular inside groove 301; a bushing 200 made to slide in said casing 300 which has a plurality of steel balls 203 respectively inserted in a plurality of radial holes 202 thereof; a lock bolt device eg. a string of beads 100 inserted into the bushing 200 and locked by the steel ball 203; a spring element 309 mounted around the bushing 200 within the casing 300; and a control knob 400 pulled to move the bushing 200 relative to the casing 300 whereby the lock bolt device can be unlocked and removed from the bushing as the bushing is moved downward by the control knob to compress the spring element, permitting the steel balls to disengage from the lock bolt device and move into the inside annular groove of the casing. <IMAGE>
Patent GB-2278569-A (GB)
Title: Moulding an optodevice onto an optical fibre ribbon
Inventor: ERIKSEN PAUL ASGER
IPC: B29C45/14
Filed: 1994-05-06
Abstract: A mould arrangement for moulding an optodevice onto an optical fibre ribbon comprises plates insertable between the movable top plate and the stationary bottom plate of a transfer moulding press, and includes an inlet channel, primary and secondary runners and an optodevice moulding cavity formed when two plates are brought together and through which the ribbon extends. The mould cavity 3 has an outwardly projecting part 9 at the ribbon-inlet end of the optodevice, and a sealing sleeve of rubber or similar material is disposed around the ribbon 4 and positioned in the mould cavity 3 so that one sleeve end completely fills the part 9 and so that the other sleeve end extends into the mould cavity 3. The seal 10 in the moulded optodevice extends out from the optodevice around the ribbon.   <IMAGE>
Patent GB-2280676-A (GB)
Title: Triazole derivatives
Inventor: BARNES NIGEL JOHN
IPC: A01N57/24
Filed: 1994-07-07
Abstract: Compounds of formula (I):   <IMAGE>  or hydrates thereof; where R<1> is hydrogen and R<2> is selected from fluorine, OR<6> or NR<7>R<8> where R<6> is selected from hydrogen, optionally substituted acyl or optionally substituted aroyl; R<7> is selected from hydrogen, optionally substituted alkyl, hydroxy, optionally substituted alkoxy, optionally substituted acyl, optionally substituted aroyl, C(O)NR<9>R<10> or C(O)OR<9> where R<9> and R<10> are independently selected from hydrogen or optionally substituted alkyl; R<8> is hydrogen or optionally substituted alkyl;  or R<1> together with R<2> form a keto group;  R<3> is selected from hydrogen and fluorine; and R<4> and R<5> are independently selected from hydrogen, a cation or an esterifying group, have herbicidal properties and are useful for killing or controlling unwanted plants.
Patent GB-2281617-A (GB)
Title: Rotor for measuring fluid speed and direction
Inventor: LLEWELYN DOUGLAS
IPC: G01P5/07
Filed: 1994-08-26
Abstract: An imbalanced rotor (10) for a wind speed and direction measuring device has three cups (11), one of which can have a radially extending flange (12) above or below the rotor. Alternatively the cups and/or the arms connecting the cups may be of different sizes. The wind causes the rotor (10) to rotate with a cyclically varying speed due to the imbalance. Wind speed can be derived from the average rotational speed of the rotor and wind direction from the cyclic variation in rotor speed. Derivation of the wind direction is achieved by measuring the difference in time required by the rotor to pass a series of equally spaced parts in its path. The time required for the rotor to pass the series of equally spaced pants can be normalised, averaged and multiplied by a correction coefficient. <IMAGE>
Patent GB-2294219-A (GB)
Title: Tool carousel
Inventor: POLLINGTON ANDREW ROY
IPC: B23Q3/157
Filed: 1994-10-17
Abstract: A tool carousel for use with a machine tool has a carousel-wheel carrying individually removable tools around its periphery. The carousel-wheel is made up of a ring of segments 22, each of moulded plastics material instead of steel. Tool holders 16, with resiliently flexible arms 50a, 50b to snap around the tools, are moulded integrally with the segments. Carousel-wheel locator slots are each formed by two facing recesses 66, 68 in adjacent side walls 26, 28 of adjacent segments. Adjacent segments 22 are interlocked together by inter-engaging tongues and grooves 36, 30. The side walls 26, 28 of each segment 22 diverge radially outwardly from a boss 42 formed with an axial through-hole 44. <IMAGE>
Patent GB-2285288-A (GB)
Title: Cylinder reciprocation control apparatus and ring alignment apparatus
Inventor: NAGATA KATSUHIRO
IPC: B23P19/08
Filed: 1994-11-10
Abstract: A reciprocation control apparatus for a pushing-out cylinder (21) includes a manifold plate (43) having a sequence of delivery and exhaust ports (45, 46) formed therethrough, the manifold being movable between an air delivery/exhaust pipe assembly (48, 48a, 48b, 48c) through which the head and cap sides of the cylinder are connected to an air supply (56) and to exhaust (46). When the manifold (43) is moved by a lead screw, the delivery and exhaust ports register in turn with the delivery/exhaust pipe assembly so that air is selectively supplied to or exhausted from the head and cap sides of the pushing-out cylinder (21) to cause reciprocation at a speed dependant on the speed of the manifold. Thus, the pushing-out cylinder (21) can easily and simply be controlled in reciprocation. The reciprocation control apparatus (42) may be incorporated into an apparatus (1) for assembling piston rings into spaced grooves in a block. By arranging for the block to move with the manifold plate, the apparatus ensures that each groove is automatically aligned with the pushing-out cylinder before the latter is operated to deposit a ring into the groove. <IMAGE>
Patent GB-2284590-A (GB)
Title: A unit for inclusion in a pressurised fluid container
Inventor: PENNELL DAVID WILSON
IPC: B65D85/73
Filed: 1994-12-08
Abstract: A unit for inclusion in a pressurised fluid container 11 for releasing a substance into the fluid when pressure in the container 19 substantially or suddenly reduced, comprises members 12, 20 defining a chamber 28 of variable volume for storing and then releasing the substance. The member 12 has a portion 13 telescopically slidably received within the member 20 and an end wall 21 with a groove 50 extending around the slidable portion. The groove receives a leading part of the member 20 when the members are telescoped together and may cause the leading end to move out of engagement with the portion 13 as the members are telescoped to provide a passage for the substance. Preferably member 20 carries on spigot 28 a washer 30 with teeth 32 which dig into the wall of member 12 as the members are telescoped to hold them together. Legs 35 may be provided between the remote ends of members 12 and 20 which flex outwardly to contact the wall of container 11 when the members are telescoped. <IMAGE>
Patent GB-2285285-A (GB)
Title: Fuel staging system
Inventor: DYER GERALD P
IPC: F23R3/28
Filed: 1994-12-09
Abstract: The system comprises a main fuel manifold (58) being coupled downstream of a sequence valve (28), and a plurality of main fuel nozzles (66) each coupled to the main fuel manifold (58) through a respective main nozzle shut-off valve (96). A first set of pilot nozzles (82) is coupled to the main fuel manifold (58) through the sequence valve (28), and a second set of pilot nozzles (86) is coupled to the main fuel manifold (58) through the sequence valve (28). At low engine speeds, in the first and/or second pilot open positions, fuel flows to either pilot nozzle (82, 86) through the main fuel manifold (58), and the main fuel nozzles (66) are isolated from the main fuel manifold (58) by the main nozzle shut-off valves (96). Then, at higher engine speeds, the main nozzle shut-off valves (96) are opened, and the sequence valve (28) splits the fuel flow from a fuel inlet line (14) between the main fuel manifold (58) and the first and second pilot nozzles (82, 86). The fuel in the main fuel manifold (58) flows to the main fuel nozzles (66), and the remainder of the fuel split off by the sequence valve (28) flows to the first and second pilot nozzles (82, 86). <IMAGE>
Patent GB-2286299-A (GB)
Title: Load current monitoring system for traction batteries in electric vehicles and hybrid vehicles
Inventor: BOLL WOLF
IPC: B60L11/18
Filed: 1995-01-24
Abstract: In a load current monitoring system for traction batteries in electric vehicles and hybrid vehicles, the load current is monitored in order to avoid damage to the battery as a result of overheating due to excessively high load currents and, if appropriate, the load current is reduced to a normal value which is permitted for continuous operation. The monitoring is activated if the load current exceeds a prescribed limit value which is an inverse function of temperature. The load current is however not reduced until the battery temperature exceeds a prescribed limit value. The arrangement described has a sensorto measure average battery temperature but goes on to provide a calculated temperature, for use as the control variable, taking into account heat balances for individual reaction zones of the battery. The monitoring is terminated as soon as both the average and calculated battery temperatures drop below a prescribed non-critical value.
Patent GB-2286278-A (GB)
Title: Input device for microwave oven
Inventor: CHOI KYUNG HWAN
IPC: G05B19/042
Filed: 1995-02-03
Abstract: An input device for controlling a microwave oven comprises a microcomputer (101), a key matrix circuit (104) and a control knob encoder circuit (103). The output from the key matrix circuit (104) is connected to an input of the microcomputer (101) and the output from the encoder circuit (103) is connected via the key matrix circuit (104) to the same input, thereby minimising the number of pins required on the microcomputer integrated circuit. <IMAGE>
Patent GB-2305640-A (GB)
Title: A dump truck with a grading blade
Inventor: CLIFFORD JUSTIN CONWAY
IPC: E02F9/08
Filed: 1995-06-09
Abstract: The dump truck and grader is in the form of an articulated vehicle with a rear section carrying a dump bucket 4 linked to a front section having a driver's cab 3 and a forward-facing grading blade 6. The blade 6 can be raised, lowered and tilted by hydraulic rams (Fig. 2). The linkage between the front and rear sections comprises upper and lower bearings and a universally-jointed drive shaft for transmitting drive to the rear wheels 2 (Fig. 3).
Patent GB-2292110-A (GB)
Title: Process for producing aromatic polyamide film
Inventor: AKIYOSHI KAZUNORI
IPC: B29D7/01
Filed: 1995-08-02
Abstract: A process for producing an aromatic polyamide film comprising forming a thin layer of an optically isotropic dope in which an aromatic polyamide is dissolved in a polar amide, immersing the thin layer dope in a polar solvent other than the polar amide and, preferably, kept at a temperature not higher than -20 DEG C to coagulate the dope to form a film and drying the film in the presence of an isocyanate compound. Said process can produce directly a transparent film from an aromatic polyamide dope without requiring the step of dissolving the aromatic polyamide in conc. sulfuric acid, does not require any acid resistant equipment and is inexpensive.
Patent GB-2308014-A (GB)
Title: Equipment mounting arrangement
Inventor: DALBY ANTHONY
IPC: H04Q1/14
Filed: 1995-12-08
Abstract: A modular electronic assembly comprises an electronic circuit module package having electrical contacts and a carrier having a socket for receiving the package. Lever arms 115 pivotally mounted on the carrier retain the module in the socket in their closed position and eject the module from the socket in their open position. The lever arms 115 also carry electrical contacts for engaging corresponding contacts on the module so as to provide electrical connection thereto. The carrier has openings to provide ventilation channels.
Patent GB-2297638-A (GB)
Title: Transferring data between memory and processor via vector buffers
Inventor: KARP ALAN H
IPC: G06F15/78
Filed: 1996-02-05
Abstract: Data is transferred between memory (24, 26, 46) and processor registers (42, 43) in a two part process using the vector buffers. In a first part, a vector request instruction initiates buffering of data by storing data in control registers (60-62, 64-66) identifying a set of data elements (a vector) in the memory. When the identifying information is loaded in the control registers, a vector prefetch controller (58, 68, 70-72) transfers elements of the vector between the memory and a vector buffer. In a second part, vector element operation instructions transfer a next element of the vector between the vector buffer and a specified processor register for use in arithmetic or logic operations. Thus, the op-code bandwidth limitation of computer systems (20) is alleviated.
Patent GB-2303018-A (GB)
Title: Battery case mounting mechanism incorporates electrical contacts
Inventor: DEGUCHI MANABU
IPC: H01M50/247
Filed: 1996-07-01
Abstract: In a battery case mounting structure for electronic equipment, for example mobile telephone, portable cassette player or portable computer, a spring-biassed locking projecting body 10 is formed on the main body of the electronic equipment and inserted in the recessed portion 13 to fix the battery case 11 in position. Two different electrode portions 3 formed on the locking projecting body come into electrical contact with electrode portions 14 formed in the battery case respectively and are electrically connected to an operating circuit of the electronic equipment when the locking projecting body is inserted in the recessed portion of the battery case.
Patent GB-2307249-A (GB)
Title: Effect yarn
Inventor: BEBIE JAKOB
IPC: D02J3/02
Filed: 1996-09-27
Abstract: A textured, continuous filament yarn 1 a having external loops is run over a stationary support 8 while loops on a yarn side opposite the support are severed by rotating cutting or grinding wheel 9 to form short projecting ends on that yarn side. The yarn may have been air jet-textured. A fabric made from the yarn is said to have a soft handle.
Patent GB-2306935-A (GB)
Title: A winch assembly with safety catch
Inventor: BROADSTOCK STEPHEN
IPC: B62D43/04
Filed: 1996-11-06
Abstract: A winch assembly includes a winching mechanism with a shaft 171 extending to a point remote from the winch housing and a safety catch with a cranked arm 25 pivotally mounted to the housing with a release mechanism adjacent to and supporting the shaft to release the catch while the mechanism is operated. The release mechanism preferably comprises a sleeve 180 which surrounds the shaft and is moved by a tool which engages the shaft to move the arm against a bias spring 200 which normally forces the catch towards the engaged position.