baber/WOPTO huggingface dataset:
Patent GB-2242009-A (GB)
Title: Downhole pressure attenuation apparatus
Inventor: RICLES THOMAS D
IPC: E21B43/116
Filed: 1991-02-25
Abstract: A downhole pressure attenuation apparatus 10 is provided by which the explosive and hydraulic peak pressure and quasi-static pressure pulses generated by perforating gun detonation are attenuated by one or more fluid-free chambers 20 having initially closed vent ports which are opened substantially contemporaneous with gun detonation so as to provide one or more free volume, pressure absorbing cavities. The pressure attenuation apparatus is made up of at least one fluid-free chamber 20 and one or more pressure relief vents 12. Each pressure relief vent includes at least one charge port assembly 16 having a prestressed port and an explosive filled shaped charge. The number of charge port assemblies used in each vent is determined by the surface area to be opened and the size of the vent chamber. Each of the charge port assemblies of the relief vent is operatively connected to a common explosive filled, detonating cord 18 which forms part of the perforating gun detonating cord. As the detonating cord fires, it causes each of the charge ports to sequentially fire and blow out the prestressed area of each port so as to open one or more vent holes leading to the vent chamber. <IMAGE>
Patent GB-2245283-A (GB)
Title: Electroplated coin blanks
Inventor: TRUONG HIEU C
IPC: C25D5/50
Filed: 1991-05-23
Abstract: A ferrous metal blank is electroplated with a strike of nickel, following which a coating of copper is applied at an initial low current density followed by full current density to minimize bridging. Preferably an outer layer of nickel is applied, also at an initial low current density, followed by full current density. Annealing before or after application of the final layer of nickel is advisable. Problems such as pinholes and blisters in making plated coin blanks and similar articles is overcome.
Patent GB-2249608-A (GB)
Title: An asymmetric mechanical vibrator
Inventor: NIKLEWSKI ANDRZEJ
IPC: B06B1/16
Filed: 1991-06-20
Abstract: An asymmetric mechanical vibrator having external adjustment, for vibrating screens and other equipment, has a bearing housing 10 fixable to a sidewall P of the equipment and supporting through bearings a central portion of a shaft 40 which has one end portion 41 inside the equipment carrying an eccentric counterweight balance 37 with fixed axial positioning, and a predetermined mass and radial location. The shaft has a second end portion 42 located outside the equipment and carrying a main eccentric counterweight 60, 65 placed nearer the bearing housing than the counterweight balance 37 and presenting radial dimension and mass superior to those of the counterweight balance. The axial positioning, radial dimension and mass of the main counterweight are selectively variable to generate determined eccentric forces on the vibrator but in each case giving a same bending moment at the bearing equal to that produced by the counterweight balance 37. The lowest eccentric force setting is that obtained by dispensing with weight 65 and reversing plate 60 as shown at 60a. <IMAGE>
Patent GB-2258026-A (GB)
Title: Two-part lock nuts.
Inventor: CHIANG CHIH-CHUNG
IPC: F16B39/18
Filed: 1991-07-24
Abstract: A nut includes a first half 41 and a second half 42, the first half 41 having an internal screw thread 411 mating with the bolt 6 and an external screwthread 412 of larger pitch, and the second half 42 having two internal screwthreads 421, 422 of different radii, the narrower internal screwthread 421 being engageable with the bolt 6 and the wider internal screwthread 422 being engageable with the external screwthread 412 of the first half 41. <IMAGE>
Patent GB-2258699-A (GB)
Title: Shaft bearing arrangement
Inventor: RAINE MICHAEL JOHN
IPC: F16C39/06
Filed: 1991-08-10
Abstract: The shaft (10) of a small gas turbine engine is supported against radial loads by a journal air bearing (15) and supported against axial loads by an electromagnetic thrust bearing (28). The journal air bearing provides the required degree of stiffness but has poor damping properties so the thrust bearing is arranged so the flux (3) of the bearing (28) passes through the shaft (10) in such a way as to provide radial damping of the shaft (10). <IMAGE>
Patent GB-2249168-A (GB)
Title: Air-conditioning and heating
Inventor: FUJITA YOSHINOBU
IPC: F25B41/04
Filed: 1991-10-25
Abstract: In a combined air conditioning and heating system with a heat pump and single outdoor unit electric expansion valves (11 and 21) are provided midway along liquid-side pipes (W1 and W2) connected to indoor units (B1 and B2) Electric flow control valves (13 and 23) are provided midway along gas-side pipes (G1, and G2) connected to the indoor units (B1 and B2) Indoor units (B1 and B2) detect air-conditioning loads, and a compressor (1) is controlled in accordance with the sum of the air-conditioning loads. At the same time, the opening degrees of the flow control valves (13 and 23) are controlled in accordance with the individual air-conditioning loads of the indoor units (B1 and B2). In the heating operation mode, the high-pressure-side pressure (Pd) of a refrigeration cycle is monitored and when the high-pressure-side pressure (Pd) becomes a preset value (Pds) or more, an expansion valve and a flow control valve corresponding to an indoor unit whose operation is stopped are opened to predetermined opening degrees. <IMAGE>
Patent GB-2253021-A (GB)
Title: Quick disconnect coupler
Inventor: WADE RICHARD B
IPC: F16L37/23
Filed: 1992-02-04
Abstract: A quick disconnect coupler (10) includes a seal retaining member (50) movably mounted in a coupler housing (14). A sealing washer (44) biases the retaining member (50) toward first position, and an annular seal (62) is mounted in the retaining member. This annular seal (62) defines both axial (64) and radial (66) sealing surfaces, and it is configured to transmit sufficient force to the seal retaining member (50) to move the seal retaining member (50) to a rearward position in response to a first, larger diameter plug bearing on the axial sealing surface (64), and to form a radial seal around a second, smaller diameter plug. <IMAGE>
Patent GB-2258396-A (GB)
Title: A device for hanging frames.
Inventor: WONG YIN HONG
IPC: A47G1/16
Filed: 1992-03-16
Abstract: A device for hanging frames, for example picture frames, overcomes prior art problems wherein string or wire attached to the frame is easily knocked off a nail on the surface, for example a wall, on which the frame is to be hung. In one aspect this is done by providing a hole 2 with converging edges located so that the nail fits snugly between these converging edges, for example in the upper corner of a triangular hole, due to the weight of the frame. The head of the nail overlaps the converging edges of the hole and is therefore held securely. In another aspect, the device has a surface 3 for supporting the wire or string attached to the frame to be hung and provides a substantial area of contact with the string so as to spread the weight of the frame and thereby reduce wear and tear on the wire or string. <IMAGE>
Patent GB-2268015-A (GB)
Title: Feed-forward distortion reduction for transconductance amplifier
Inventor: MADNI SYED ARSHAD
IPC: H03F1/32
Filed: 1992-06-18
Abstract: A feed-forward amplifier includes a first differential pair of transistors (T3, T4), each in a common-emitter configuration for receiving an input signal (Vin); and a second differential pair of transistors (T2, T5), each in common-emitter configuration for receiving the input signal. The emitters of the first pair transistors are cross-coupled to respective collectors of the second pair transistors thereby reducing distortion components at an output of the first pair of transistors. <IMAGE>
Patent GB-2257767-A (GB)
Title: Apparatus for lining installed pipework.
Inventor: MCGUIRE BRIAN EDWARD
IPC: B29C63/46
Filed: 1992-09-01
Abstract: A method of lining installed pipework with a length of liner pipe 7 made from a memory retaining plastics material comprising drawing the liner pipe through a swaging die 3 attached to but spaced from the pipework 10 to reduce the external diameter of the liner pipe by up to 15%, drawing the liner pipe through the installed pipework with its outer diameter reduced to and/or maintained at a dimension less than that of the inner diameter of the pipework and thereafter allowing the liner pipe to expand within the pipework by relaxation of the said tension followed by memory induced expansion at ordinary atmospheric pressure and at the ambient temperature of the pipework, and gripping 21, 22, 23 the liner pipe emerging from the die within the space between the die and the pipework and urging the liner pipe towards and through the pipework. <IMAGE>
Patent GB-2270956-A (GB)
Title: Portable anchoring system
Inventor: KNAPPER WILLIAM
IPC: F04B13/02
Filed: 1992-09-24
Abstract: A portable anchoring system is provided comprising a back-pack 6, an applicator 4, a first container 1 for catalyst, a second container 2 for resin and a means 5 for propelling the catalyst and resin to the applicator 4, for use in anchoring members such as wall ties. The propelling means 5 is in the form of a housing having inlets 7, 8 and outlets 10, 11 for the catalyst and the resin. An operating piston is disposed within the housing and is moveable between a first and second position, to expel discrete doses, of the catalyst and the resin. The operating piston is displaceable by compressed air stored in a tank 3. When the trigger of the applicator gun 4 is depressed air from the tank 3 is fed to the operating piston, the latter thereby performing a single stroke to deliver the catalyst and the resin through the outlets 10, 11 and opened needle valves in the applicator 4. <IMAGE>
Patent GB-2260840-A (GB)
Title: Keyboard having visible and invisible states
Inventor: LOEBER PETER JOHN
IPC: G01D11/28
Filed: 1992-11-20
Abstract: A chart recorder or other instrument has a window (10) within which is a key panel (1) composed of materials which are transparent in normal conditions. Incorporated in or associated with the individual elements of the key panel are display element (22) applied to the transparent window material (20). The display elements are normally transparent but become visible for example by fluorescence, when illuminated by radiation transmitted through the body of the transparent window material (20), rendering the key panel visible when needed for use. <IMAGE>
Patent GB-2261965-A (GB)
Title: Pot-type oil burner
Inventor: NIWA OSAMU
IPC: F23N1/00
Filed: 1992-11-25
Abstract: In a pot-type oil burner the amount of combustion or the fuel feed rate are automatically controlled irrespective of the type of fuel used and/or its viscosity. An oscillator (102) generates an oscillation signal at a frequency selected by a burner controller (101). A monostable multivibrator (103), constituting a turn-on signal generating circuit, is fed with the oscillation signal to generate a turn-on signal in synchronism with the oscillation signal. A transistor (TR1) for permitting an exciting current to flow through an exciting coil of an electromagnetic pump (24) is made conductive depending on the turn-on signal. The monostable multivibrator (103) includes a signal width determining circuit, in which an adjustment element constituted by a resistor and a switch (104) are arranged, so that the switch (104) is closed depending on viscosity of fuel used, to alter the width of the turn-on signal depending on the fuel viscosity. <IMAGE>
Patent GB-2260208-A (GB)
Title: Authentication system
Inventor: HOPPER ANDREW
IPC: G01S17/00
Filed: 1992-12-09
Abstract: In an authentication system for badges carried by persons, a base station, in response to an infra-red call-up signal from a badge, challenges the carrier with an infra-red PPM signal in the form of a random number and the badge (Fig. 1) generates an encrypted infra-red PPM response signal obtained by combining the random number with a unique password to be verified at the base station before a signal signifying authentication is produced. e.g. to unlock an access door.   <IMAGE>
Patent GB-2260800-A (GB)
Title: Suspension and spring element therefor
Inventor: PULLEN JOHN
IPC: B60G17/027
Filed: 1992-12-16
Abstract: A spring element (23) is of lune shape with arcuate sides so that when it is bent into a bowed configuration it provides a substantially constant force to oppose movement of its ends towards one another. The element (23) is usable in a vehicle suspension with a device (22) to vary the geometry of the suspension to correct for changing vehicle loading and dynamic conditions. <IMAGE>
Patent GB-930412-A (GB)
IPC: H03M1/00
Abstract: 930,412. Electric selective signalling. PEEKEL LABORATORIUM VOOR ELECTRONICA N.V. Feb. 2, 1962 [Feb. 10, 1961], No. 4128/62. Class 40 (1). In an analogue to decimal digit converter an arm carrying a number of brushes moves over a disc on which the coded segments are formed by printed circuit technique. The units scale is determined by the four outer tracks on the disc. The tens scale comprises the next two tracks, so arranged that segments 1 and 9, 2 and 8, 3 and 7, 4 and 6 are respectively connected, and a third track which determines which of the digits 1 or 9, 2 or 8, &c., shall be displayed by controlling a relay. The hundreds scale, the sixth track from the middle of the disc, is sensed by two brushes, changeover from one brush to the other being effected by a relay controlled by the outermost units track. This ensures that the hundreds indication changes at the correct instant of change in the units scale : a similar arrangement applied in the case of the tens scale.
Patent GB-2266954-A (GB)
Title: Marking element
Inventor: COLLEY TERENCE
IPC: G01K11/06
Filed: 1993-05-26
Abstract: A marking element for indicating whether a pre-defined temperature condition has been maintained. The marking element (1) comprises a first material (8) capable of flowing above a pre-determined temperature separated from a second absorbent material (6) by a barrier layer (7). The first and second materials are such that when the barrier layer (7) is punctured and the pre-determined temperature is exceeded the first material (8) flows along the second material (6) to produce a detectable change.
Patent GB-2268770-A (GB)
Title: A valve having releasable latch mechanism
Inventor: LEE PAUL BERNARD
IPC: E21B21/10
Filed: 1993-07-16
Abstract: A valve having a releasable latch mechanism and serving to control the flow of liquid between a drill string and the borehole annulus comprises: a tubular body connected as part of the drill string, a first port formed in the wall of the tubular body for communicating annulus pressure into the tubular body; a piston movable axially within the tubular body between a closed position and an open position, the piston comprising a second port 18 allowing passage of fluid from within the piston and further comprising a passage extending through the piston; latching means 14 for holding the piston in the closed position; and biasing means 22 for biasing the piston to the closed position, and a third port 17 formed in the wall of the tubular body; whereby when the piston is in the open position the second and third ports 17, 18 are aligned, allowing passage of fluid from within the piston to the annulus, thereby by-passing the tubular body. The piston may be shifted by dropping a plastic ball into the drill string, the plastic ball seating in the piston to block the through passage in the piston. <IMAGE>
Patent GB-2282038-A (GB)
Title: Elasticated angling boom
Inventor: LOUIS GEORGE
IPC: A01K91/053
Filed: 1993-08-24
Abstract: An elasticated angling boom comprises of a swivel 1 at one end and a hooklength connector 5 at the other. These are joined by a length of graded elastic 6 which is housed in tubing 3. The elastic absorbs shock when connecting with a fish. This allows the use of low diameter high tech lines which tend to snap because of their properties. The boom can be used when using a method called ledgering. It can be used for running line by passing line through swivel 1 or paternoster style by tying line to swivel 1. <IMAGE>
Patent GB-2271354-A (GB)
Title: Tricyclic derivatives of benzodiazepines
Inventor: SHOWELL GRAHAM A
IPC: C07D471/06
Filed: 1993-09-30
Abstract: Compounds of formula (I), and salts and prodrugs thereof:   <IMAGE>   wherein: Y is CHR<4> (where R<4> is H or C1-6alkyl) or O; Z is a bond, CH2 or O, with the proviso that Y and Z are not both O; R<1> is NHR<12> or (CH2) sR<13> where s is 0, 1 or 2; R<2> and R<3> are H, C1-12alkyl optionally substituted by NR<9>R<9'> or an azacyclic or azabicyclic group, optionally substituted C4-9cycloalkyl, C4-9 CycloalkylC1-4alkyl, aryl, arylC1-6alkyl or azacyclic or azabicyclic groups, or R<2> and R<3> together form the residue of an optionally substituted azacyclic or azabicyclic ring system; R<12> is optionally substituted or fused phenyl @              or pyridyl; R<13> represents a group   <IMAGE> wherein R<14> is H or C1-6alkyl; R<15> is H, C1-6alkyl, halo or NR<6>R<7>, R<6> and R<7> being hydrogen or defined substituents; and the dotted line is an optional covalent bond; are CCK and/or gastrin antagonists useful in therapy.
Patent GB-2273697-A (GB)
Title: Controlling the feed of alternative sheet media in a mailing machine
Inventor: GALLAGHER DENNIS M
IPC: G07B17/00
Filed: 1993-12-20
Abstract: A mailing machine can selectively process either a first sheet media (envelope, card or letter) entering at the left end of horizontal media transport deck 17 and sensed at 92 or a second sheet media (piece of adhesive tape) from magazine 22A. When sensor 92 detects a first media, it sends a signal 94 to a microprocessor 30 which in turn activates feed rollers 17B. This media is then selectively fed either to envelope flap moistening device 20 or to postage indicia printer 50 or to both. On the other hand, when it is desired to feed a piece of adhesive tape from magazine 22A to printer 50, a tape key 121 is manually operated and this signals the microprocessor to firstly activate the feed rollers 17B and secondly to activate a roller 23 for feeding a tape from the magazine to the nip of the already rotating rollers 17B. The tape by-passes the moistening device 20. <IMAGE>
Patent GB-2274557-A (GB)
Title: Ceiling rose
Inventor: CANE FREDERICK CHARLES
IPC: H02G3/20
Filed: 1993-12-23
Abstract: A ceiling rose has a base plate 2 provided with a depending central hollow pillar 4, which snap-engages with a corresponding aperture formed in the cover 3. The pillar serves as a conduit for the electrical flex which supports the bulb holder; the individual conductor wires are led to the terminal block 7 through notches 6 formed in the pillar wall and which are in communication with open-ended slots which allow the end portions of the pillar to be inwardly resiliently deformable, to provide for the snap-engagement action. <IMAGE>
Patent GB-2285992-A (GB)
Title: Bidet attachment for W.C.
Inventor: ALLISON WILLIAM CLARK
IPC: E03D9/08
Filed: 1994-01-19
Abstract: A shell-shaped device is attached to the rear of a toilet bowl in order to catch some of the water during flushing and cause said water to flow as an upwardly directed spray. <IMAGE>
Patent GB-2287181-A (GB)
Title: Handle
Inventor: SANDERS STEPHEN JOHN
IPC: A45F5/10
Filed: 1994-03-11
Abstract: A handle for releasable engagement with an object to be carried has a grip portion 1 for engagement by a hand of a user and a channel 2 extending through the grip portion for receiving a part of the object inserted via an opening 5. The handle can be released from the object for re-use. The handle may have radially extending end walls 10, 11 and the longitudinal edges adjacent the opening 5 may have interengaging lips. <IMAGE>
Patent GB-2277782-A (GB)
Title: Fuel pump
Inventor: TIMMS COLIN THOMAS
IPC: F02M59/36
Filed: 1993-12-02
Abstract: A unit injector for supplying fuel to an internal combustion engine has a bore (21) in which is mounted a pair of plungers (22) extending from the opposite ends of the bore. The plungers are actuated by cams (26) which are mounted on a pair of cam shafts of the engine. <IMAGE>
Patent GB-2294024-A (GB)
Title: Moulded plastics badge
Inventor: PEARSON GIAN
IPC: G09F3/12
Filed: 1994-10-15
Abstract: A moulded plastic badge (11) comprising a substantially planar body (12) having a front face (13) and a back face (14), the front face being recessed (15) to receive a label and the back face having a pin mounting means (18) thereon which is formed integrally with the support. The mounting means (18) comprises a pair of spaced apart lugs (21, 22) and one lug (21) has an aperture (23) therein for receipt of a portion of a pin and the other lug (22) has a detent (28) for receipt of the free end of the pin. <IMAGE>
Patent GB-2286954-A (GB)
Title: Apparatus for video games and advertising sequences
Inventor: SMITH DONALD GEORGE
IPC: A63F13/00
Filed: 1993-04-30
Abstract: Apparatus is disclosed for playing a game in which a player representative unit has the opportunity to perform simulated tasks. The apparatus is arranged to present one or more advertising sequences of video pictures advertising goods or services other than to play the game. The advertisements may with advantage relate in some way to the game and can be presented as a part of the environment in which the player representative unit performs the simulated tasks.
Patent GB-2283596-A (GB)
Title: Multiprocessor system with data memory sharing
Inventor: DENT PAUL W
IPC: H04M1/725
Filed: 1994-10-19
Abstract: In a system including a control processor, at least one coprocessor 34, a program memory 7 and a shared data memory 8, the control processor accessing the program memory during an instruction fetch cycle and the data memory during an instruction execution cycle, apparatus for controlling access to the data memory has a coprocessor interface 26 - 32, and instruction fetch detection logic coupled to a control processor interface for detecting when the control processor requests access to the program memory and generating, in response, a first access control signal. The apparatus also has scheduling logic 25 for detecting when the coprocessor requests access to the data memory and, in response, generating a second access control signal. A switch 23 couples address, data and control signals to the data memory alternatively from the control processor or the coprocessor. A selection control signal for the switch is generated by arbitration logic 24, in response to the first and second access control signals. The detection of an instruction fetch by the control processor may be based on an instruction fetch signal M1 issued by the control processor, or on an address generated by the control processor not being in a range associated with the data memory. <IMAGE>
Patent GB-2306153-A (GB)
Title: Security tagging of merchandise
Inventor: BLAIR IAIN ALEXANDER
IPC: G09F3/10
Filed: 1995-10-10
Abstract: A carton or label for merchandise is formed from a blank of sheet material incorporating a security tag 39 which is applied to a first portion 40 of the blank so as to protrude, in use, into or through an aperture 38 in a second portion 37 of the blank so as to minimise the protrusion of the tag beyond the label or carton wall. The apertured second portion 37 may face the inside of the carton, and a third portion may be provided so that the aperture 38 and tag therein are sandwiched between the first and third portions.
Patent GB-2293280-A (GB)
Title: A balun apparatus and method of designing same
Inventor: PHILLIPS JAMES PATRICK
IPC: H01Q23/00
Filed: 1995-01-30
Abstract: An electrical connection (400) between a balanced circuit (405), such as a radio receiver (503) and a balanced circuit (401), such as an antenna (515) requires a balun (403). In a small electronic device such as a radiotelephone (500), a traditional balun is impractical because of physical constraints. The balun function is performed by using a transmission line (517) of minimum transverse dimensions and a predetermined length between the receiver (503) and the antenna (515). <IMAGE>