baber/WOPTO huggingface dataset:
Patent GB-2220464-A (GB)
Title: Lock-up clutch
Inventor: PARSONS DAVID
IPC: F16H61/14
Filed: 1988-07-06
Abstract: A torque transmitting arrangement, for example an hydraulic torque converter of a vehicle transmission assembly, incorporates a direct coupling or lock-up clutch and comprises a fluid coupling (1) including torque input means to an impeller (2) and torque output means from a turbine (7). The lock-up clutch (17) comprises a clutch friction plate (19) including a friction member (20) which is engageable directly or indirectly with one of the torque input means and the torque output means. The clutch further comprises a first linking element such as a triangular weight (23) pivotally connected to the other of the torque input means and the torque output means by a stub (22), and a second linking element (25) pivotally connected to the clutch friction plate (19) by a stub (26) and to the first linking element (23). For a modification, the clutch directly engages the housing (3) and the stub (26) is mounted on the turbine (7). The linking elements and weights are stated to provide damping by two means. <IMAGE>
Patent GB-2223443-A (GB)
Title: Portable wood sawing apparatus
Inventor: CROSSETT NORMAN
IPC: B23Q1/30
Filed: 1988-08-26
Abstract: A wood saw has a chassis which is portable and can be positioned at a workstation and powered from the power take- off of a tractor. The saw-blade 4 is movable between a retracted safety position and a forward cutting position. A linkage system requires the operator's foot to depress a pedal 15 so as to simultaneously clamp the wood in a guide channel 13 and release a lock 18 on the forward movement of the saw-blade. The operator must use his foot to clamp the wood and release the blade, his hand to bring the blade mechanism forward, and his other hand to rest on a handle on the chassis to steady himself. With both hands in use, and the blade re-locking after the cut, the system is intrinsically safe in unskilled operation. <IMAGE>
Patent GB-2213132-A (GB)
Title: Ribbon carriers for typewriters and other imprinting machines
Inventor: HAFTMANN JOHANNES
IPC: B41J32/00
Filed: 1988-12-07
Abstract: A ribbon carrier 1, with delivery and winding spools, for typewriters and similar imprinting machines, is adapted for insertion into a holder 2. The carrier has retaining elements 9 for the ribbon, comprising opposed hooks 10, 11, which are so formed that the ribbon slides out of them when the carrier is operationally engaged in the holder. Thus the ribbon is secured in transport in a position which facilitates insertion of the carrier in the holder. When arms 17, 18 of holder 2 are hinged towards the inserted carrier 1, ribbon tensioner 22 and fingers 24 force the ribbon from the retaining elements 9. Alternatively, the winding spool may be rotated to pull the ribbon from the retaining elements 9. The ribbon is then in its correct operating position. <IMAGE>
Patent GB-2215728-A (GB)
Title: Glass-ionomer cement composition
Inventor: OKABAYASHI MINAHIRO
IPC: A61K6/083
Filed: 1989-02-08
Abstract: A cement composition comprises an unsaturated carboxylic acid polymer and an alkaline earth metal aluminofluorosilicate glass, wherein the alkaline earth metal aluminofluorosilicate glass comprises (a) 50 to 95% by weight of coarse particles having a spherical shape and an F/Si ratio of at least 0.1 but lower than 0.6 and having a particle size larger than 3  mu m but not larger than 50  mu m and (b) 5 to 50% by weight of fine particles having an F/Si ratio of 0.6 to 5 and a particle size of up to 3  mu m. 
<??>This cement composition gives a cured body having a good surface gloss and a high strength, and has a good flowability and a good workability. Accordingly, the composition is valuable as a dental cement.
Patent GB-2231372-A (GB)
Title: Spindle assembly for disc drive
Inventor: WHITE NORMAN J
IPC: F16C33/10
Filed: 1989-05-12
Abstract: A motorized spindle assembly for a hard disk drive comprises a stationary shaft assembly 11 and a rotating hub assembly 10 supported by self-acting air bearings. A hollow ceramic sleeve 12 is fitted co-axially around the shaft. A double herringbone groove pattern is indented into the outer cylindrical surface of the sleeve. A further hollow, ceramic cylinder 13 forms part of the hub assembly and fits co-axially over the sleeve. Two ceramic thrust plates 14, 15 are indented with a herringbone groove pattern such that a suitable air bearing can develop between the surfaces of the thrust plates and the flat end surfaces of the cylinder 13 when the cylinder rotates relative to the thrust plates. An aluminum hub 92 is shrunk co-axially on to the cylinder 13. A motor stator assembly 54 is fitted to the end of the shaft and a magnetic rotor assembly 53 is fitted to the inside surface of the hub. 
<IMAGE>
Patent GB-2221781-A (GB)
Title: Solvent detecting sensor
Inventor: AKIBA JUJI
IPC: G01M3/04
Filed: 1989-07-19
Abstract: A solvent detecting sensor (1) comprises first and second electrical conductors (4,5) installed on an electrically insulating substrate (3) to form a detection circuit network (2), the conductors being separated from each other and covered by a masking layer (6) of an electrically insulating material which is both water-repellent and capable of being dissolved by the solvent to be detected. A surface layer (9) which is both porous and electrically conductive covers the masking layer (6).
Patent GB-2241569-A (GB)
Title: Boilers
Inventor: DONKIN DAVID
IPC: F22B1/28
Filed: 1990-03-02
Abstract: In an electric boiler for use as part of a hot water heating system, the boiler includes a heat store so as to be capable of being heated by off-peak electricity. The heat store consists of identical bricks (28) having vertical semi-cylindrical recesses which can be loaded into the boiler from the front to closely surround the boiler tubes (24, 25). Insulation panels to the side of the heat store are removable to give the clearance necessary to insert the bricks at the side. The brick is preferably made from a clay or chemically bonded mineral mixture containing in excess of 95% magnesium oxide. <IMAGE>
Patent GB-2229870-A (GB)
Title: A power converter with current-type inverter
Inventor: INABA HIROMI
IPC: H02M7/48
Filed: 1990-03-07
Abstract: An output of a converter unit 3 is applied as an input to an inverter unit 5 through a DC reactor 4, and AC power is supplied to a load from the inverter unit. A ripple component or the like of the DC input of the inverter unit is detected, and the switching elements (51 to 56) of the inverter unit are controlled by PWM control from 10 with the modulation rate determined in accordance with a predetermined instruction, thus providing a sinusoidal output waveform. Since the input to the inverter unit is allowed to contain a ripple, the DC reactor is reduced in size. The output of the inverter unit is a sinusoidal AC power containing no high harmonics and therefore the load is free of effects of high harmonics. The absence of a ripple component in the output of the inverter reduces noise or vibration of the motor 7 and improves the riding quality of an elevator driven by the motor. Also prevents flicker of a fluorescent lamp connected to the power supply. The transistors 31-36 and 51-56 may be replaced by GTO, FET or IGBT devices. 
<IMAGE>
Patent GB-2229659-A (GB)
Title: Production plant for the machining or assembly of components
Inventor: STICHT WALTER
IPC: B65G37/02
Filed: 1990-03-08
Abstract: The plant (1) has lateral guide lanes and vertical guide lanes (13) for components on carriers, comprising lane sections (11, 12) arranged successively, each one of which is assigned at least one feed device (15) of its own, which is independent of the adjacent sections and has a bolt-type driving element and that two guide lanes (13) are arranged spaced apart across the conveying direction, which are assigned the belt-type driving element (30) and the feed drive (15) forms a lateral guide for the carriers. The feed belt can protrude just above the lane section surface, with rollers mating with a trapezoidal cross-section recess in the carriers for lateral guiding. Alternatively, the belt presses laterally against a corresponding carrier surface with rollers abutting the opposite surface. Some sections have lanes and feed belts on turntables. …<IMAGE>…
Patent GB-2230764-A (GB)
Title: Stapler for image forming apparatus
Inventor: YAMAZAKI HIDEO
IPC: B42B4/00
Filed: 1990-04-12
Abstract: A stapler unit for a copier or the like includes transport paths either to an upper elevatable tray 107 in sorting section I, or to a stapler section II. Paths are determined by setting guide pawl 105. Sheets are aligned by jogging fences 5, 6. The stapler can be positioned depending on sheet size, and can staple in either carrier. Stapling errors are detected and corresponding sheets diverted. The stapled stocks are rigidified by rippling transverse to their direction of travel. 
<IMAGE>
Patent GB-2233151-A (GB)
Title: Lamp unit with an electric lamp
Inventor: ANGERER REINHARD
IPC: H01K7/02
Filed: 1990-04-23
Abstract: Lamp unit with an electric lamp. The lamp 1 is installed in a reflector 4 and, together therewith, installed in a bulb enclosure 5.   <IMAGE>
Patent GB-2242116-A (GB)
Title: A shelving assembly
Inventor: THOMAS DAVID LAURAN
IPC: A47B51/00
Filed: 1990-05-04
Abstract: A shelving assembly comprises a frame (10) and a plurality of shelf elements (18) which are supported in the frame; the frame has a plurality of tracks (16, 17) and the shelf elements have guide elements (26) for engaging the tracks (16, 17) and for allowing sliding movement of the shelf elements in the frame. At least one of the shelf elements (18) is adjustable in level in the frame and the tracks (16, 17) and the guide elements (26) of the adjustable shelf elements are such that it is slid able between retracted and extended positions, and between different levels in the frame when in the extended position. The shelving assembly permits an increase or decrease of available shelf surface according to particular requirements and simplifies restocking of perishable or durable goods. <IMAGE>
Patent GB-2235919-A (GB)
Title: A reel-support spring for a video tape cassette
Inventor: RYU SU SUN
IPC: F16F1/18
Filed: 1990-05-04
Abstract: A spring for keeping reels from moving in a cassette comprises a central portion 6, Fig. 1, two bent portions 7 and supplementary elastic pieces 8 inclined to portions 7. Pieces 8, Fig. 6, may be on either side of portions 7. The whole spring is moulded from synthetic resin. <IMAGE>
Patent GB-2232559-A (GB)
Title: Security apparatus to prevent unauthorised outgoing calls being made on a telephone
Inventor: BURKE RICHARD
IPC: H04M1/667
Filed: 1990-06-07
Abstract: The apparatus comprises a bracket 12 with a planar portion 30 on which may be placed a telephone, and a cover 10 which is engagable with the bracket 12 to substantially cover the dialling means of the telephone but enable free access to the handset. A lock is provided to secure the bracket 12 to the cover 10 thereby retaining the telephone in the apparatus. <IMAGE>
Patent GB-2246705-A (GB)
Title: Inflatable portable toilets
Inventor: AL-ASIR RABEEA
IPC: A47K13/06
Filed: 1990-08-09
Abstract: A portable toilet has a set of separately inflatable annular rings 10, 11 arranged one on top of the other. The bottom ring has a flat closed base. The upper ring receives a disposable liner when the inflated toilet is in use. The upper ring is detachable for use with a conventional toilet. The bottom ring is visually distinguished, for example by being triangular in shape, in order to avoid being selected for such use. Releasable fasteners such as press stud or hook-and-pile fabric 17-20 may be employed. <IMAGE>
Patent GB-2235581-A (GB)
Title: Apparatus for loading and unloading sleeves for a IC tester
Inventor: LEE SOO-PIL
IPC: G01R31/28
Filed: 1990-08-10
Abstract: An apparatus for loading and unloading sleeves for a IC tester, which may automatically transport the IC chip-contained sleeves randomly contained in a hopper (2) to a sorter section in a correct posture by means of a timing belt (4) having sleeve holders (5) to feed the chips to the tester (8) by a first transfer block, and then automatically transfer empty sleeves from an ejector section having a cam plate and an ejector through a dropping section having a pair of guide rails (35) to an unloader section having a second transfer block, a sleeve holder, a sensor and a pushing plate (61), thereby permitting the sleeves to be refilled with the tested and sorted IC chips and stored in a storage box (66). <IMAGE>
Patent GB-2236614-A (GB)
Title: Secondary electron multiplying apparatus
Inventor: YAMAMOTO HIROSHI
IPC: H01J43/24
Filed: 1990-09-04
Abstract: A secondary electron multiplying apparatus includes a first channel base 31 for multiplying secondary electrons and a second channel 32 base for inducing an inclined electric field. The inner surface 38 of the first channel base 31 is made of an electrically resistive material having a predetermined relatively large secondary electron emission coefficient, and the inner surface 32 of the second channel base is made of an electrically resistive material having a predetermined secondary electron emission coefficient smaller than that of the inner surface of the first channel base. <IMAGE>
Patent GB-2238188-A (GB)
Title: P W M Inverter
Inventor: KATTO MASAYUKI
IPC: H02M1/00
Filed: 1990-05-08
Abstract: An inverter 20 is controlled by a PWM generator 60a and has a reference signal generator 40a associated with zero level of current detected by an output current detector 90 for supplying a signal to the PWM generator 60a. Control is provided for prevention of a short circuit between controllable elements used as switching elements in the PWM inverter 20 which outputs a variable a.c. voltage or an a.c. indicative of a variable frequency. A selecting means (80, Figs 14 and 15) selects an output within a period during which the result of detection by the current detector 90 falls within a region of substantially zero level and also selects only a signal corresponding to each switching element which effectively acts on the generation of the output current, out of signals generated by a PWM signal generator 60 during a period other than the above-described period, thereby to output the same as a drive signal for the switching element. The current detector 90 is used to determine the polarity of the output and the control ensures that only the switching elements providing the correct polarity output are allowed to be driven. <IMAGE>
Patent GB-2250643-A (GB)
Title: An electrical plug
Inventor: APPERLY DENNIS HENRY
IPC: H01R13/68
Filed: 1990-11-22
Abstract: An electrical plug comprises at least one plug pin (16) having a head (52) larger than the aperture (17) in the plug base (4) into which the pin is fitted. The head is secured to the base by a retaining member (50) inserted into the base from the inside of the plug outwardly. This provides a quick and simple method of securing the plug pin. The retaining member or members can be coloured to match the colour of the insulation of individual wires of the supply cable to ensure correct connection of wiring. Retention of the supply cable may be by means of a pair of vanes secured by extensions of the vanes fitting into holes in the base (4). <IMAGE>
Patent GB-2239792-A (GB)
Title: Adjustable seating
Inventor: WALKER JOHN GRAHAM
IPC: A47C1/028
Filed: 1990-12-20
Abstract: An adjustable seat comprises a seat portion (10) and a back rest portion (12) which is adjustable between a lounging and a dining configuration. To adapt the dining configuration the backrest is moved in the direction towards the front of the seat portion and is simultaneously raised and inclined to a steeper angle. The movement is achieved by a single stroke of an actuator (16) that pivots an angled crank (14) about a pivot (15) mounted below and towards the front of the seat portion. The lower backrest 12 may be removed and repositioned to extend seat cushion 10 to provide a sleeping surface. To provide extra firmness of the seat cushion in the dining position movable supports under the cushion may be provided (21, <IMAGE>
Patent GB-2241974-A (GB)
Title: Drills for piles and soil stabilization
Inventor: COUTTS PETER GRAHAM
IPC: E21B10/44
Filed: 1991-02-21
Abstract: A drilling assembly (210) for in-situ cast piles has a drill stem (211) with a helical flyte (212). A drilling head (224), with teeth (225), and a belling tool (226), with retractable cutting tools (227) are mounted on, in driving engagement with, the non-circular shank (218) of a soil stabilization spear (214). The spear (214) drills a pilot hole in advance of the drilling head (224) and grout pumped down through the tubular body (215) of the spear (214) fills the cracks and fissures in the surrounding soil to stabilize the soil as the drilling assembly (210) is advanced. When the desired depth is reached, the rotation of the drilling assembly (210) is reversed and cutting tools (227) are extended to cut a ''bell'' or annular chamber around the hole. As the drill assembly (210) is withdrawn from the hole, grout pumped down the interior (230) of the stem (211) fills the hole to cast a pile in-situ, the increased diameter of the bottom of the pile, and the stabilized soil around it, increasing its load strength.
Patent GB-2248449-A (GB)
Title: Diarylalkyl-4-aryl piperazine derivatives
Inventor: WARD TERENCE JAMES
IPC: C07D295/084
Filed: 1991-10-01
Abstract: Compounds of formula (I) and their pharmaceutically acceptable acid addition salts, wherein W is (CH2)m, CHOH or O, m is one of the integers 1 or 2, A is an alkylene chain of 1 to 3 carbon atoms optionally substituted by one or more (lower)alkyl groups, R is hydrogen or lower alkyl, R<1> and R<2> are each, independently, aryl or heteroaryl radicals with the proviso that R<1> is not an optionally substituted indolyl radical, R<3> is hydrogen or lower alkyl and R<4> is an aryl or heteroaryl radical, are 5-HT1A binding agents which may be used, for example, in the treatment of CNS disorders such as anxiety.
Patent GB-2258071-A (GB)
Title: Data transmission circuit
Inventor: SEOK YONG-SIK
IPC: G11C7/10
Filed: 1991-11-25
Abstract: A data transmission circuit with a fast access time and a high chip density, used for a semiconductor memory device, comprises a pre-amplifier 101 connecting segmented I/O lines 35, 36; 35', 36' with data I/O lines 37, 38 and which is mounted on a strapping area of a chip gas to secure high chip density. Voltages on bit lines BL, BL, which are weak despite the presence of sense amplifier 7, are consequently amplified adequately. <IMAGE>
Patent GB-2267416-A (GB)
Title: Coding of digital signals
Inventor: WILKINSON JAMES HEDLEY
IPC: H03M5/14
Filed: 1992-05-27
Abstract: A method of coding an input digital signal by replacing successive m-bit groups of the input signal with associated n-bit code words, where n is an even number greater than m, to produce an output signal, comprises: identifying a said n-bit code word associated with each said m-bit group, the cede words being such that at least some of the 2<m> possible m-bit groups each have a different complementary pair of said code words associated therewith and each code word is dc-free and has a predetermined maximum transition width of </= Tmax bits and a minimum transition width between the first and last transitions therein of >/= Tmin bits; and selectively outputting either the identified code word or its complement in dependence upon the preceding output code word so that a serial bit stream formed of successive output code words has a minimum transition width of >/= Tmin and a maximum transition width of </= Tmax even across the boundaries between successive code words. Applications include channel coding in video tape recorders. <IMAGE>
Patent GB-2258926-A (GB)
Title: Weighbridge
Inventor: BULLIVANT ROGER ALFRED
IPC: G01G19/02
Filed: 1992-07-17
Abstract: A weighbridge is constructed in an excavated pit or at ground level by placing on a concrete slab (11) two end members (13, 14) locating a weighing platform (22) between the end members and thereafter adjusting the position of one or both end members relative to the platform such that the clearance between the respective ends of the platform and a vertical flat face (18, 20) of the end member is within a predetermined range. The end members are then fixed in position, for example by casting concrete ramps (32, 34) thereagainst. <IMAGE>
Patent GB-921774-A (GB)
IPC: G21C7/36
Abstract: 921,774. Temperature measurement; electric temperature alarm systems. E. K. COLE Ltd., and P. R. DASTIDAR. March 23, 1960 [April 10, 1959], No. 12133/59. Classes 40(1) and 118. [Also in Group XL (c)] An alarm, control or measuring system has provision for being tested by injection of a train of pulses into a transistor circuit, the pulses being too narrow to cause an incorrect indication when the system is working correctly, but capable of indicating when the system is defective. Fig. 1 of the Provisional Specification (not shown). relates to a temperature measuring system for use in a nuclear reactor. The reactor temperature is determined by a thermocouple, correction for change in cold junction temperature being provided by variation in voltage across a temperature-sensitive copper resistor fed with constant current. The thermocouple output is connected in series with a variable resistor, used as sensitivity adjustment, and fed to a transistor which is switched on and off alternately by pulses from a multivibrator (Fig. 3, not shown) so that the measuring voltage is chopped into a square waveform. The output is demodulated by a transistor synchronously controlled by the multivibrator and, after integration, passed by an emitter follower to an indicating instrument. A biased switch SW1 may be thrown into one position to reduce the amplifier gain by additional negative feed-back, or to the other position in which a standard voltage is substituted for the output of the thermocouple. Excess temperature alarm and tripping circuit.-The amplifier output is fed via terminal L1 to a regenerative trigger circuit comprising transistors TR1, TR2 (Fig. 2). TR1 is normally non-conductive so that its output voltages drive transistors TR2, TR3 into conduction, energizing relay RLA. Transistor TR1 will be rendered conductive in the event of excessive reactor temperature so that transistors TR2, TR3 will be cut off, releasing relay RLA to disable the reactor. According to the Provisional Specification, a similar circuit is provided to release a further relay at an intermediate temperature to provide a warning signal. System testing arrangements.-Narrow pulses from the multivibrator (Fig. 3, not shown) are fed into the trigger circuit via point X. The pulses are too short to operate the trigger circuit or the relay so that they are amplified and rectified by diode D9 before being used to bias back transistors TR4, TR5 and similar transistors in the other alarm circuit. If the supply of pulses to diode D9 fails because of a circuit fault, the collector voltage of transistor TR5 rises, driving diode D1 into conduction and releasing relay RLA. The Specification describes a large number of other fail-safe features.
Patent GB-2259487-A (GB)
Title: Fork lift truck
Inventor: GOETZ BERNHARD
IPC: B60K1/04
Filed: 1992-09-11
Abstract: A fork lift truck with battery operated drive comprises two premounted assemblies (I, II). The first assembly (I) includes the driver's operating position (2) and the driver's tiltable protective roof. The second assembly (II) includes the chassis, the axles, the counterweight and a battery (7) arranged in the chassis. To enable batteries of different heights to be installed, an intermediate frame (9) is attachable between the two assemblies (I) and (II). <IMAGE>
Patent GB-2271682-A (GB)
Title: Opto-electrical connectors
Inventor: WISBEY PHILIP HENRY
IPC: H04B10/80
Filed: 1992-10-13
Abstract: An electrical apparatus having an electro-optical connector is described which permits the use of electrical circuit cards in a rack mounted system using an optical bus by converting optical signals to electrical signals and vice versa. <IMAGE>