baber/WOPTO huggingface dataset:
Patent GB-2229663-A (GB)
Title: Actuator mechanism for a rotary valve
Inventor: THORNTON JAMES MENZIES
IPC: F16D3/20
Filed: 1990-02-08
Abstract: A tundish (11) has located alongside it an upright support member (20). A cross arm (22) is pivotally mounted on the member (20) with one end of the cross arm (22) overlying the tundish (11). A hydraulic or pneumatic ram (25) is mounted in the member (20) for applying a downward force on the overlying end of the cross arm (24) which mounts a drive means (27) connected to the stem (14) of a rotary valve (12) for controlling the exit of hot or corrosive liquid from the tundish (11).
Patent GB-2230908-A (GB)
Title: Method and apparatus for control of a brushless DC motor
Inventor: SCHWARZ MARCOS GUILHERME
IPC: H02P6/21
Filed: 1990-03-27
Abstract: A motor (20 Fig 2) of the type having a coiled stator and a permanent magnet rotor, the relative rotor position being detected by the induced voltages. The control circuit comprises an invertor (10) for supplying current (I1, I2, I3) to the stator coils (1, 2, 3); a position detector (30) for detecting the relative positions of the rotor and stator from the induced voltages in the coils, and a control circuit 45 for sending control signals S1 to S6 to the invertor the control signals being dependent on the current Im supplied by the invertor (10) to the stator coils, a reference speed Wref and the rotor position P1, P2, P3. The control circuit comprises a memory device 50, a series of delay elements 70, 80, 90, a circuit 140 controlling the supply of current to the motor (20); a circuit 110 detecting the minimum speed limit of the motor; a circuit 120 for providing a measure of actual motor speed, a voltage comparator circuit 100 having hysteresis for comparing the actual motor current with a desired motor current, and a circuit 130 for obtaining the desired motor current from the actual motor speed and the desired motor speed. <IMAGE>
Patent GB-2232328-A (GB)
Title: Quadrature modulator
Inventor: MAKINEN JARMO
IPC: H03C1/52
Filed: 1990-04-11
Abstract: A quadrature modulator, e.g. with QPSK modulation, comprises means (8, 11) for the compensation of a local oscillator leak signal in an output signal (RF OUT) of the modulator (15), which means add different compensation voltages to two modulation signals (I, Q). To provide an automatic compensation of the local oscillator leak signal, the quadrature modulator comprises regulating means (6, 9, 13) for the regulation of the intensity of the compensation voltages independently of each other on the basis of the correlation between the amplitude variation in the output signal (RF OUT) and the corresponding modulation signal (I or Q). …<IMAGE>…
Patent GB-2243726-A (GB)
Title: Unplugging electric plugs
Inventor: MILES WILLIAM FREDERICK ASH
IPC: H01R13/633
Filed: 1990-04-11
Abstract: A moulded plastics strip (10) is attached to a British Standard three-pin plug (15) to facilitate removal of the plug from a socket. The strip (10) has end portions (12) each of which is formed with three apertures (13) to receive the plug terminals (14). The strip (10) is flexible and has a length such that, when one end of the strip (10) has been attached to the terminals (14), the strip (10) can be wound round the body of the plug (15) and then the other end of the strip (10) attached to the terminals (14), with the body of the strip (10) defining a loop which can be grasped manually. Areas (16, 17, 18) of increased thickness resist flexing. <IMAGE>
Patent GB-2231428-A (GB)
Title: Information handling and control systems
Inventor: HODGKISS JAMES ARTHUR
IPC: B60R16/02
Filed: 1990-04-30
Abstract: An automotive vehicle electrical system has a central unit (10) with remote units (20) connected to the central unit (10) by multiplex signalling links (40). User operable switches (60, 61) and non-critical loads (70, 71) are connected to the remote units (20) and in normal operation their interaction is under functional control of processing and control means (12) in the central unit (10). Further user operable switches (600, 601) and critical loads (700, 701) are connected to a driver unit (15) in the central unit (10) which in normal operation is connected via buffer means (16) to the processing and control means (12). The central unit (10) also includes monitoring means (17) which can detect failure of the processing and control means (12) and in response disconnect the buffer means (16) from the driver unit (15) so that the critical loads (700, 701) are then safeguarded by being under direct control of the further switches (600, 601) via the driver unit (15). <IMAGE>
Patent GB-2245968-A (GB)
Title: Solid fuel effect gas fires
Inventor: HOPE ALEXANDER JAMES NAPIER
IPC: F24C3/00
Filed: 1990-07-11
Abstract: A method of improving the combustion efficiency, bright red glowing appearance, and increased total heat output of a simulated solid fuel gas fire by placing mechanical baffles (9) above and close to the outlets of tubes (10) which admit air for combustion. The baffles deflect incoming air laterally causing intimate mixing of air and fuel gas, at a level where the gas, supplied by distribution tubes (5), perculates to the upper surface of the fine particulate layer (6). Flame formation starts thereafter, immediately higher in the system, within the simulated solid fuel bed. The resulting improved combustion within the bed generates a very high temperature therein. Residual combustion occurs above the bed in the form of orange flames, indicative of complete combustion. <IMAGE>
Patent GB-2235272-A (GB)
Title: A fluid friction coupling
Inventor: SCHUMANN SIEGFRIED
IPC: F16D35/00
Filed: 1990-08-16
Abstract: A fluid friction coupling comprises a coupling hub (1) and a coupling housing (2) rotatably supported on the coupling hub. The coupling also comprises sets of plates (6; 7) non-rotatably mounted on the hub and housing. One set of plates has spacing teeth which, while eliminating the previously used spacer rings, permit accurate spacing of the set of plates. A predetermined number of spacing teeth of the axially immovable plates (7) are bent out of the plane of the respective plate so as to be generally Z-shaped with both bending angles approximately 90 degrees. This measure ensures that the plates for a fluid friction coupling are designed in such a way that they are accurately spaced at predetermined distances and that they are suitable for automatic assembly purposes. <IMAGE>
Patent GB-2236098-A (GB)
Title: Interfolder
Inventor: STEMMLER KURT
IPC: B65H33/02
Filed: 1990-08-20
Abstract: A method of producing part stacks of interfolded sheets comprises transporting a continuous stream of sheets (W1', W2'), folding and interleaving the sheets in zigzag fashion to build up a stack (S), creating a gap (2, 202) in the stream, so causing a corresponding breach in the stack (S), and inserting separating elements (47, 48) into the breach to form a plurality of part stacks (S1). The gap (2, 202) is formed by the removal of a sheet (T1', T2'), which is then temporarily stored and returned to the stream in alignment with a subsequent sheet. <IMAGE>
Patent GB-2249327-A (GB)
Title: Fence pale and method of making same
Inventor: DEELEY GEOFFREY THOMAS
IPC: E04H17/14
Filed: 1990-11-01
Abstract: A fence pale formed from slit, pro-galvanised steel strip has its ungalvanised edges (28) lying adjacent to galvanised surfaces (27). <IMAGE>
Patent GB-2243718-A (GB)
Title: A process for fabricating a contact less floating gate memory array
Inventor: WADA GLEN N
IPC: H01L21/8247
Filed: 1990-11-05
Abstract: A process for fabricating ultra-high density (e.g., 64Mbit) contactless EPROMs and/or flash EPROMs in a silicon substrate is described. Spaced-apart island members are formed of poly 2/dielectric/poly 1 layers (21, 22, 23) over gate oxide regions (19). Each island member is associated with one of the cells within the array, and is separated from other island members by trenches (26) extending down to either the field oxide or substrate regions. Elongated, parallel, spaced-apart source/drain regions are formed on adjacent sides of the channel regions by ion implantation. The trenches are then filled with an insulating material and a plurality of wordlines patterned across the array. Each wordline makes electrical contact to the control gate members associated with the single row of cells within the array. <IMAGE>
Patent GB-2240214-A (GB)
Title: Ionization-type smoke sensor
Inventor: ISHII KANJI
IPC: G08B17/113
Filed: 1990-12-17
Abstract: An ionization smoke detector includes inner electrode 1 carrying a radiation source, intermediate electrode 2 having an opening 3 through which radiation from the radiation source passes, outer electrode 5 through which smoke may flow inside from outside, and an insulator 6, which supports and insulates inner electrode 1, intermediate electrode 2 and outer electrode 5, is provided with an insulating fence portion 22 disposed on and projecting from a surface of the insulator 6 which faces the outer electrode, the fence portion 22 surrounding the periphery of the opening 3 of the intermediate electrode. The fence 22 may, as shown, be integrally formed with the insulator 6 and may be inclined radially inwardly of the sensor; or it may be removably mounted thereon and may be of mesh-like construction, Figs 5, 7 and 8 (not shown). Alternatively a plurality of concentric fences may be provided which increase in height radially inwardly of the sensor, Fig. 6 (not shown). The fence serves to reduce the flow of air heading toward the opening, thereby promoting stable sensor characteristics. <IMAGE>
Patent GB-906318-A (GB)
Abstract: 906,318. Polymerization of cyanogen chloride; catalysts. FARBENFABRIKEN BAYER A.G. Oct. 31, 1960 [Nov. 12, 1959], No. 37377/60. Classes 1(1) and 1(2) Cyanogen chloride is polymerized, particularly to cyanuric chloride and tetrameric cyanogen chloride, in the presence of a catalyst which may consist of fluoroboric acid or one or more of the following elements, their oxides or sulphides:- iron, aluminium, zinc, molybdenum, tungsten, manganese, titanium, chromium, boron, silicon, tin, arsenic, antimony, bismuth, cobalt, nickel, copper, e.g. iron oxide, zinc oxide, molybdenum oxide, chromium oxide, titanium oxide, iron sulphide, zinc sulphide, tungstic acid. The process may be carried out in the liquid phase under pressure and at elevated temperature, or it may be in the gas phase. Catalysts may be present in amounts of from 0À1 to 10% and may be in the form of lumps, a powder, or on a carrier, e.g. pumice stone, silicon dioxide or porcelain. Example 10 uses an iron oxide/aluminium oxide catalyst supported on carbon prepared by suspending carbon of particle size 2À6 mm. in a solution of ferric sulphate and aluminium sulphate, adding sodium hydroxide, filtering off the hydroxide/carbon solid mixture and heating to obtain the oxide catalyst supported on carbon. Specifications 691,274 and 718,806 are referred to.
Patent GB-2240056-A (GB)
Title: Apparatus for machining a bevel gear
Inventor: TAKANO KOHZOH
IPC: B23F23/08
Filed: 1991-01-18
Abstract: The apparatus has a frame (1), a spindle head (4) on the frame (1) for rotatably supporting a spindle (3) mounting a machining tool (2) e.g. a grinding wheel, and an indexing unit (7) for holding a workpiece (W) such that the workpiece (W) is indexed by one pitch of teeth to be formed thereon to perform machining of tooth spaces with the tool (2). The spindle (3) is horizontally and rotatably held against movement in the head (4) axial. The head (4) is movable back and forth axially laterally. A column (5) is provided on the apparatus frame (1) in front of the spindle head (4) such that it is turnable about a vertical axial line at an arbitrary angle. A plurality of indexing units (7) may be provided on an external periphery of the column (5) spaced apart. The indexing units (7) are provided on the column (5) in a vertically movable manner. A plurality of vertically movable lifting frames (6), may be provided on the column (5) at a distance therebetween in the circumferential direction of the column (5) and the indexing units may be detachably mounted on them. <IMAGE>
Patent GB-2251788-A (GB)
Title: Folding umbrella frame
Inventor: STILLER KLAUS
IPC: A45B19/10
Filed: 1991-02-25
Abstract: The invention relates to a collapsible umbrella having at least one pair of canopy rod parts (1, 2), which extend alongside one another and are guided so as to be displaceable on one another, within each linkage of the canopy-supporting linkage frame. One of the canopy rod parts (2) is composed of wire, and guided on the other rod part (1) by means of a bight (2e) of the wire which embraces the other rod part and is formed with hooks (2f, 2g) which can be spread to allow the bight to be fitted transversely on the other rod. <IMAGE>
Patent GB-2241762-A (GB)
Title: Hydraulic clutch actuator
Inventor: LEIGH-MONSTEVENS KEITH VERNON
IPC: F16D25/08
Filed: 1991-03-21
Abstract: The actuator (10) includes a housing (20) adapted to be positioned within a clutch housing (14) around a drive shaft (16). The housing is formed of a plastics material and includes inner and outer axially extending annular wall portions (20d, 20g) forming an annular axially extending piston bore (20h). An annular piston (22) is positioned in said piston bore and is movable axially by fluid under pressure. A metallic reinforcement ring (56) is insert moulded in tightly surrounding relation to said outer annular wall portion (20g) to prevent expansion of the outer annular wall portion during operation of the actuator.
Patent GB-2254464-A (GB)
Title: Audible alarms
Inventor: SAINT WILLIAM HENRY
IPC: A01M29/16
Filed: 1991-04-06
Abstract: Alarm apparatus intended for protecting an area of water containing fish which may be preyed on by fishing birds comprises a passive infra-red detector 10 having a fan-shaped detection zone and adapted to respond to the presence of a bird in that zone. A sound transducer 17 is driven by a control circuit 13 triggered by the output of the detector 10, the control circuit initially producing a first drive signal to cause the transducer to issue a first kind of audible alarm signal, such as a simulated series of gun shots. Then, if the detector 10 output continues to trigger the control circuit after the lapse of a pre-set time interval, the control circuit produces a second drive signal to cause the transducer to issue a second kind of audible alarm signal, such as a simulated dog barking. This cycle may be repeated, or may include further simulated noises, until the detector no longer detects the presence of a bird. <IMAGE>
Patent GB-2244604-A (GB)
Title: Terminal block arrangements in a three-phase alternator
Inventor: FASTERDING HENNING
IPC: H02K11/04
Filed: 1991-05-13
Abstract: A three-phase alternator for vehicles, which has a rectifier arrangement consisting of cooling plates which are arranged parallel to one another and receive the respective positive and negative diodes with their casing, includes a circuit board of insulating material arranged between the cooling plates, and terminal studs integrated into the circuit board for the radial terminal of at least some of the electrical terminal connections, the arrangement being such that the circuit board, in the terminal region, electrically separates the terminals and covers the rectifier devices otherwise exposed by a cutout in the protective cap. The terminal assembly receives the boundary edges of the cut out when the cap is inserted over the rectifier and latches the cap in position.
Patent GB-2245199-A (GB)
Title: Sieve
Inventor: REID DOUGLAS JAMES
IPC: B07B13/00
Filed: 1991-05-22
Abstract: A sieve for sieving particles, such as synthetic diamonds or cubic boron nitride particles, has apertures which are hexagonal or, preferably, octagonal in shape.
Patent GB-2257779-A (GB)
Title: Lining metallurgical vessels
Inventor: ECCLESTON KENNETH T
IPC: B22D41/02
Filed: 1991-07-17
Abstract: A metallurgical vessel such as a Tundish, has an outer metal casing lined with a relatively permanent lining is provided with an inner expendable lining which comprises a first layer of slabs of refractory heat-insulating material adjacent the permanent lining and a second, inner, molten metal-contacting layer formed by applying an aqueous slurry of refractory material over the first layer and drying. The aqueous slurry is preferably applied by spraying.
Patent GB-2247255-A (GB)
Title: Ventilating a lavatory pan
Inventor: CASALE ENZO
IPC: E03D9/052
Filed: 1991-07-31
Abstract: A lavatory pan seat (10) generally of conventional shape and adapted to be mounted to the pan at the back of the rim by a hinging means (16), the seat having air inlet apertures (14) at its inner periphery communicating with an air channel within the seat which also communicates with an air extraction passage connected to a hose (20) leading to an extractor fan (22), the hinging means comprising a hollow centre piece (18) fixed to the pan and two hollow cheeks pivotally mounted to the centre piece, whereby the air extraction passage extends from the internal air channel to the fan hose through said cheeks and centre piece. <IMAGE>
Patent GB-2259685-A (GB)
Title: Production of computer packages
Inventor: MCDONNELL ALEX
IPC: G11B23/00
Filed: 1991-09-18
Abstract: A process (1) is disclosed for production of computer packages in which several different items are required. Production of a particular type of package is broken down into batches (eg. of 400). Each batch includes several sub-batches of blank disks for duplication. Disks before duplication are stored in colour-coded containers and in different colour-coded containers after duplication. The labelling (8, 9, 19) and duplication (20, 21, 27) operations are each carried out using one sub-batch of disks at a time and quality control checks (19, 28) are carried out for each sub-batch. A batch production record is maintained and data is registered (5) to the batch record at various steps including the quality control steps of the process. <IMAGE>
Patent GB-2251975-A (GB)
Title: Device for making packages of mutually insulated battery plates for further processing, e.g. moulding connections thereon, and thereafter automatic boxing
Inventor: MARTINONI FRANCESCO
IPC: H01M50/536
Filed: 1991-10-11
Abstract: The device consists of one or more boxes 12 for the preliminary compacting of packages of plates prior to further processing each box having a plurality of moving internal walls which are made to draw toward the fixed central wall 14 starting from opposing fronts, there being on both faces of said walls elastic, independently inflatable and/or deflatable membranes 26 having the purpose of compacting the groups of plates and releasing them simultaneously or individually or alternately at the moment (Fig. 2 not shown) they are pushed into the battery container 36 after further processing by suitable members 32 present at a station 30 capable of vertical movement and rotation of the battery container. Creation of connection bonds by casting, using dies divided into two sectors brought together and independently fed with lead melted at different temperatures for the connection of positive plates and the thinner negative plates respectively can be used since the device facilitates assembly of a uniform alternation of positive and negative groups of plates in the battery container. <IMAGE>
Patent GB-2265522-A (GB)
Title: Communication system with call charge information stored in handset
Inventor: BARNES NIGEL EVERAND
IPC: H04M15/00
Filed: 1992-03-28
Abstract: A communication system, such as a portable telephone telepoint system, comprises a handset 11 and a base station 10, the handset can receive a registration sequence from the base station and store a number dependent thereon. The base station meters charge units and generates a new registration sequence when a unit is to be charged and transmits the new sequence to the handset. A new number stored in the handset and dependent on the new sequence differs from the old number to reflect deduction of pre-paid charge units. The handset may display remaining credit information. A voice prompt may warn that credit is running low. <IMAGE>
Patent GB-2257474-A (GB)
Title: Aerosol valve unit
Inventor: ABPLANALP ROBERT HENRY
IPC: B65D83/14
Filed: 1992-06-29
Abstract: In a valve unit for vertical and tilt action aerosol valves, the valve body (16) has an annular extension member (26) integral with and extending from the valve body. Together they both provide a recess which receives the valve stem (20) as a frictional fit therein. Internally, both the valve body and the extension member are provided with aligned grooves (32) which provide a flow path for the contents of the aerosol package when the valve is actuated by vertical or sideways pressure on the button (85) which moves the rim (40) of the valve body (16) away from the gasket (14). Fluid then flows through transverse openings provided through the wall of the extension member (26) into the aligned grooves (32), and from thence, via a swirl chamber (68, Fig. 8), to the valve stem. The internal grooves in the extension member (26) provide two regions of reduced wall thickness (21a) in the extension member which facilitate moulding, especially of the apertures leading from those grooves into the valve body. <IMAGE>
Patent GB-2262540-A (GB)
Title: Enhancement of hot workability of titanium alloy by coating with titanium
Inventor: RUSSO PATRICK A
IPC: C22F1/18
Filed: 1992-12-18
Abstract: A process for improved hot-workability of a crack-sensitive titanium alloy comprises thermally coating prior to hot-working the alloy with a layer of titanium or a titanium alloy which is more easily hot workable than the base layer. This combination allows the crack-sensitive base alloy to be rolled with a minimum of surface and edge cracks. By using a plasma sprayed titanium coating there is a reduction in the roll force required to reduce the material during the hot working process. The layer of titanium may be at least 0.25 mm in thickness. Hot working may be effected with dies or rolls at a temperature of 815.6 DEG C - 1371.1 DEG C. The titanium or titanium alloy may be removed after hot working from the base alloy.
Patent GB-2284622-A (GB)
Title: Improvements in and relating to downhole tools
Inventor: MCHARDY COLIN
IPC: E21B23/00
Filed: 1993-11-13
Abstract: A downhole tool comprises a body (16, 30), a first coupling (14) for connecting the body (16) to a string, a second coupling (20) for connecting the body (16) to a first portion of a second tool (18) eg. a bridge plug, a spring (38) for apply a force to the second tool and having a primed configuration (Figures 1 and 2) in which a compression force is stored in the spring (38), and a coupling (40, 42, 44, 46) operable to release the spring (38) to permit the stored force to be applied to the second tool. <IMAGE>
Patent GB-2271284-A (GB)
Title: Spinal fixation system
Inventor: MIDDLETON JEFFREY KEITH
IPC: A61B17/70
Filed: 1992-05-18
Abstract: Apparatus for use in surgery for the correction or alleviation of spinal defects, comprises a number of pedicle screws and associated parts including a common correction rod clamped between the screws. Each screw has a slotted head (12) with a semicylindrical bottom wall (14). The slot has a partially threaded bore (16). In use, a plurality of screws are secured into adjacent spinal bodies. The slots (12) of the screws are aligned before inserting the common rod (20) into each slot to link the screws together. A pad (22), contoured to fit the profile of the rod (20), is next introduced into the bore (16) of each screw by use of a special tool to which it is screwed. When a pad has been introduced the tool is unscrewed from the pad leaving the pad in place. A threaded plug (34) is then screwed into the bore (16) of each screw to urge the pad (22) against the rod (20), to clamp the rod. The apparatus also comprises an instrumentation kit and novel tools to facilitate use. <IMAGE>