baber/WOPTO huggingface dataset:
Patent GB-2105130-A (GB)
Title: Synchronous AM envelope detector
Inventor: KAHN LEONARD R
IPC: H04H20/88
Filed: 1982-07-09
Abstract: An envelope detector for an amplitude and phase modulated carrier includes in-phase and quadrature-phase product demodulators 104, 106 whose outputs are passed through low pass filters 110, 112 separately. These separate filtered outputs are then squared 114, 116 and summed 118. The square root 120 of the resulting sum signal is taken to produce the desired output signal whose amplitude is proportional to the envelope of the composite modulated carrier. <IMAGE>
Patent GB-2163321-A (GB)
Title: Interrogation signals
Inventor: JANEX ALBERT
IPC: G01S13/78
Filed: 1982-12-23
Abstract: An I.F.F. signal comprises a fixed-frequency carrier subjected to modulation (2) by a pulse train to produce a series of pulses at the carrier frequency, and further modulated (3) by phase shift keying to produce phase jumps between adjacent carrier pulses. The signal commences with a standard preamble. A receiver for the signal has means to detect the phase jumps followed by a circuit for protection against interference which may upset the phase jump detection. The means for detecting the phase jumps are with advantage formed with a quadriphase demodulator connected to a threshold detector. <IMAGE>
Patent GB-2137351-A (GB)
Title: Proximity detector
Inventor: ALEXANDER MURIEL MILLICENT
IPC: G01P3/488
Filed: 1983-03-18
Abstract: A low profile device which can be used to detect the proximity of magnetic materials and is robust and not susceptible to damage by knocks and bangs from external objects consists of a copper winding C wound on a bobbin having unequal diameter flanges B, D, the tails of the winding being secured at two pins on larger flange D. These pins are secured to the twin cores of a screened cable which enters the side of a housing E through a protective grommet. Voids in housing E are filled with resin. The device has a centre pole piece A which passes through the core of the winding and to which is attached magnet N. When a magnetic material is passed over the end of the pole piece an e.m.f. voltage is induced in the coil windings. This e.m.f. voltage can be used by external electronic circuitry to detect the proximity of the magnetic material. <IMAGE>
Patent GB-2138757-A (GB)
Title: Vehicle drag reduction system
Inventor: NIGHTINGALE EDMUND JOHN DAVID
IPC: B62D37/02
Filed: 1983-04-23
Abstract: A drag reduction system for a vehicle, comprises a stabilising plate spaced from a portion of the vehicle, the surface of said portion facing the plate being shaped to define with said plate a venturi duct. The stabilising plate comprises a wing 12 exerting a downthrust on the car when the car is in motion, and the wing 12 defines the venturi in combination with a casing 11 which is supported beneath the wing and which covers parts of the vehicle engine. <IMAGE>
Patent GB-2123651-A (GB)
Title: Transducers
Inventor: KELLY STANLEY
IPC: H04R9/04
Filed: 1983-06-24
Abstract: A moving conductor transducer, for example a loudspeaker, with a magnetic assembly 10-16 presenting at least two elongate approximately parallel air gaps and having a thin diaphragm 21 with a generally planar portion supporting conductors 34, 35 thereon is described. At least one linear conductor 34, 35 is disposed to coact with the magnetic field in each air gap, an actuating current being passed through the conductors 34, 35 in the different gaps in series such that the conductors, and with them the diaphragm, all move in the same direction. The conductors 34, 35 are preferably in the form of flat spirals. Supplementary magnets may be provided to reduce flux leakage and hence increase the flux density in the air gaps. <IMAGE>
Patent GB-2142385-A (GB)
Title: Mechanical delivery system for a catalyst or the like
Inventor: BROOKS WILLIAM ROBERT
IPC: B65D83/14
Filed: 1983-06-28
Abstract: Apparatus for injecting ingredient into a pressurised container 24 having a cavity which receives the container. The coupling member 40 includes a mounting structure for use in positioning a syringe assembly 42 which includes a syringe body 66 that defines a chamber for containing a metered amount of a fluid product and a cannulated needle 70. A member 44 is assemblable with the coupling member 40 and includes an actuator 96 for selectively engaging the syringe assembly. <IMAGE>
Patent GB-2123100-A (GB)
Title: Labyrinth seal
Inventor: BOFINGER KLAUS
IPC: F16J15/44
Filed: 1983-06-28
Abstract: A labyrinth seal is placed between a shaft or axle (10) and a stator (13). The seal comprises an alternating sequence of two rings (2,4) with radial clearance therebetween and rings (3) having radial clearance with respect to the stator bore (15). Of the two rings with radial clearance therebetween, the outer ring (4) is located with a press fit in the bore (15) and the inner ring (2) with a press fit on the shaft (10). Each ring (3) located between two rings (2,4) is located with a press fit on the shaft (10). The rings (3) may have concentric annular grooves in their flanks (Fig. 4). The inner part of the labyrinth seal may be formed by a bush formed with annular grooves and press fitted onto the shaft (Figs. 5, 6). The rings (4) may be of an elastic material and be held against the bore of the stator by spring rings co-operating with the inner periphery thereof (Fig. 6). A cover (12) sealingly co-operating with the stator 13 is provided on the shaft. Pressurised fluid may be communicated to the closed chamber 14 formed by the cover and stator to aid the labyrinth seal. <IMAGE>
Patent GB-2126473-A (GB)
Title: Rotary brush body
Inventor: EPPINGER AXEL
IPC: A46B13/04
Filed: 1983-08-23
Abstract: A brush body for a rotary brush is in the form of a disk (10) with fluid supply openings (28) arranged in a circle (27) and extending through the disk from an upper face (29) of one disk to the underside. The openings (28) are located immediately adjacent the inner wall of an integral annular rib (31) on the upper face, the wall projecting towards the centre of the disk between neighbouring openings to form a barrier for directing cleaning fluid on the upper face towards the openings (28) when the disk is rotating, so that the fluid reaches bristles (14) attached to the underside face and so that the escape of fluid beyond the edge (12) of the disk is minimised. <IMAGE>
Patent GB-2132659-A (GB)
Title: Ground anchor
Inventor: DAHL GUNNAR
IPC: E02D5/80
Filed: 1983-09-15
Abstract: This comprises a tube having slits 1 at its lower end. The tube is beaten into the ground, rotated axially, and again beaten, so that flaps 2 splay out. <IMAGE>
Patent GB-2150804-A (GB)
Title: Garden implements
Inventor: JUDGE ANDREW
IPC: A01G3/04
Filed: 1983-11-24
Abstract: A garden implement comprises a frame 2 having a pair of axles 7 which are adapted to carry water-filled rollers 10 (Figure 1), so that the frame 2 may be pushed over the ground. A cross member is secured on the frame 2, between two fasteners 12. A support bracket 13 is slidably mounted on the cross member and, in turn, a hedge cutter 14 is mounted on the support bracket 13. The position of the hedge cutter 14 on the frame 2 may be adjusted, and the frame 2 may be pushed along the ground beside a hedge, with the hedge cutter 14 in an operative position such that it cuts the hedge. The specification also discloses a number of other configurations to which the frame 2 may be adapted, to serve as various different tools - such as a garden roller, wheelbarrow, handcart, lawn aerator, and lawn spreader. <IMAGE>
Patent GB-2134876-A (GB)
Title: Swivelling-type work vehicle
Inventor: IKEDA AKIHIKO
IPC: E02F3/34
Filed: 1983-12-19
Abstract: A swivelling-type work vehicle has a swivelling superstructure comprising an excavation implement and a hydraulic motor 3 for causing the swivelling. There further is provided a control apparatus 20 which functions to automatically reduce the working hydraulic medium flow rate supplied to the hydraulic motor 3, whenever the swivelling superstructure has come to a respective preset vicinity of either one of given left and right halt positions, thus to reduce the swivelling speed in such vicinity range. <IMAGE>
Patent GB-2157371-A (GB)
Title: Combined turbo-jet and ram-jet engine
Inventor: PATRICK HUGH
IPC: F02K7/16
Filed: 1984-02-10
Abstract: A jet propulsion engine of the kind including an air intake, axial flow compressor, combustion chamber 70, turbine 105 and exhaust nozzle 119 arranged so that burnt gas passing to the nozzle operates the turbine which drives the compressor is characterised by a first bypass duct permitting at least a part of the intake air to bypass the compressor and for conducting the bypass air directly to the combustion chamber 70, and a second bypass duct 124 permitting at least a part of the gas from the combustion chamber 70 to bypass the turbine 105 and exhaust directly through a further nozzle 137. Controllable doors are provided to block the inlet of the first bypass duct so that the engine can be operated selectively as a turbo-jet, a ram-jet, or a combination of the two. <IMAGE>
Patent GB-2158955-A (GB)
Title: Colour photography
Inventor: JANUSZKIEWICZ MICHAL DENNIS
IPC: G03B17/24
Filed: 1984-03-01
Abstract: When taking a colour image, a reading is taken of the prevailing colour temperature and is recorded directly onto the film on which the photographic image itself is exposed. A camera is described having diffusers 26 through which the ambient light passes; it is then analysed by devices 28, before reaching film 10. The negative is developed in the usual way. When producing a positive from the negative by printing, the recorded colour temperature is read by the printer and used to modify the colour characteristics of the light source used, to compensate for the colour cast or bias prevailing at the time of exposure of the picture and to produce a positive which appears as though exposed under neutral white light. Also disclosed is a projector for projecting still or cine images which modifies the light source in response to the colour temperature recordings on the film adjacent the images. <IMAGE>
Patent GB-2159763-A (GB)
Title: Process for sticking adhesive tape on thin article
Inventor: OHNISHI KENJI
IPC: B65C9/18
Filed: 1984-06-06
Abstract: A process for sticking an adhesive film on a thin article such as a silicon wafer is proposed. Adhesive films stuck on a web coated with a release agent are peeled off the web by bending the web at a sharp angle or by applying suction force. The adhesive film peeled is stuck on the article with a correct alignment. <IMAGE>
Patent GB-2144488-A (GB)
Title: Internal combustion engines
Inventor: DUCKWORTH DAVID KEITH
IPC: F42B19/20
Filed: 1984-03-01
Abstract: A method of operating an internal combustion engine in which there is introduced into a combustion chamber, inert carrier gas, combustion supporting gas and fuel, the fuel is caused to combust in the combustion chamber and exhaust gas is exhausted from the combustion chamber wherein the carrier gas comprises a significant proportion of carbon dioxide and the exhaust gas is treated with water to remove from the exhaust gas and absorb in the water an amount of carbon dioxide generally equal to the quantity of carbon dioxide added by said combustion, and the thus treated exhaust gas is returned to the combustion chamber to provide the carrier gas. The carrier gas may have inert gas such as argon added thereto in proportions controlled such that the gamma value of the mixture of gases equals a predetermined value which may be approximately that of air.
Patent GB-2153726-A (GB)
Title: Machine tool for trimming edges
Inventor: STROEZEL REINHOLD
IPC: B24D7/00
Filed: 1985-01-04
Abstract: A hand machine tool for trimming edges and parts near the edges of lap welded metal sheets, particularly on window recesses and door recesses of motor vehicle bodies has a drive spindle on which a toothed or abrasive tool (3) with two mutually facing toothed or granular surfaces suitable for removal of material and maintained at a mutual interval is fastened. The surfaces are lateral surfaces of two side-milling cutters (4), or grinding wheels arranged juxtaposed. The cutters (4) are masked by guard discs (8) so that only the preferably vee-shaped annular gap between the cutters (4) is accessible. The tool (3) can be guided safely along the edges to be trimmed by the hand machine tool (1). The operator is protected from injury. It is possible to work faster and therefore more economically. <IMAGE>
Patent GB-2154746-A (GB)
Title: Apparatus for detecting a physical quantity of a detection medium
Inventor: YAMADA YASUHIRO
IPC: G07D7/16
Filed: 1985-01-23
Abstract: An apparatus for detecting a physical quantity of a detection medium, comprises a sensor (18) for outputting a signal of a level corresponding to the physical quantity of the detection medium, a detecting circuit (13) for receiving the output signal of the sensor (18) and for outputting a result of detection of the physical quantity of the detection medium on the basis of the output signal of the sensor (18), a reference signal generating circuit (17) for generating at least one reference signal, a reference signal input circuit (11, 12, 14, 15, 16) for delivering a reference signal which is output from the reference signal generating circuit (17) in place of the output signal of the sensor (18), and an off-normal state detecting circuit (11, 19) for detecting an off-normal operation state of the detecting circuit (13) by a signal which is output from the detecting circuit when the reference signal is input. The physical quantity may be thickness, and the detection medium may be a banknote. <IMAGE>
Patent GB-2179034-A (GB)
Title: Substance for the sorption of oil and related compounds spilled on water and other substrates
Inventor: JONES JAMES ALFRED
IPC: C02F1/68
Filed: 1985-07-18
Abstract: The invention relates to a substance produced, typically, from the cork of the cork-tree (Quercus Suber) by subjecting it to physical and chemical treatment to render it oleophilic and hydrophobic. Such a substance is reduced in size to give it optimum sorption capacity. The substance is used either as a loose powder, or contained in an oil-permeable packaging in the shape of a pillow, sock or blanket. Oil is removed from the surface of water or other substrates by sorption on the substance and can be subsequently recovered by pressure or centrifugal force or by solvent extraction and/or distillation. Alternatively the oil can be incinerated in situ or after removal. Oil can also be recovered from sand and/or shale deposits using the substance.
Patent GB-2164409-A (GB)
Title: A device for controlling operation of a rotary clutch unit particularly a double acting one way clutch
Inventor: PECK ANTHONY LEONARD
IPC: F16D41/08
Filed: 1985-08-22
Abstract: This invention provides a device for controlling operation of a double acting one-way clutch having operating mode selection projection (11) displaceable, in a plane substantially perpendicular to the unit rotary axis, between a clutch disengaged position and at least one clutch engaged position, which device includes a lever (16) with a cam surface (18) provided thereon or associated therewith intermediate its ends, which lever (16) is connected at or adjacent one end (16a) to the selection projection (11) and connectible at or adjacent its other end (16b) to part of the clutch unit to extend transverse to the unit rotary axis, with the cam surface (18) in the vicinity of and directed towards the unit rotary axis, for movement in the plane of movement of the selection projection (11), and a generally cylindrical spindle (19) locatable to extend coaxially with the unit rotary axis and having at least two different diameter peripheral cam faces (20) in axially stepped formation along the spindle (19) for engagement one at a time by the cam surface (18) on the lever (16) which is resiliently biassed towards contact therewith. Axial displacement of the spindle (19) causes one of the spindle cam faces (20) to engage and displace the lever cam surface (18), displacing lever end (16a) which then engages the projection (11) to rotate a lock member (6) between three positions corresponding to drive in either direction and a neutral position. In a second embodiment the lever cam surface may be replaced by a spring loaded plunger engaging a C-shaped wire lever. <IMAGE>
Patent GB-2181559-A (GB)
Title: Pellet durability tester
Inventor: PAYNE JOHN DAVID
IPC: G01N3/56
Filed: 1985-08-29
Abstract: In a pellet durability tester the pellets to be tested enter a test chamber 2 from the pellet production line via a chute 7; a previously vertical sieve disc 6 is then rotated to the horizontal and thereby closes the chamber; after optional partial drying of the pellets, the test chamber 2 and enclosed pellets are weighed by the load cell 8; the pellets are then vigorously agitated e.g. by blower 5 or compressed air and broken pellets, pieces of meal etc., pass through the sieve disc and out of the pellet tester; after agitation the test chamber and pellets are re-weighed and the difference in weight before and after agitation is used to calculate the pellet durability. <IMAGE>
Patent GB-2179863-A (GB)
Title: Racket stringing
Inventor: KUN NAN LO
IPC: A63B51/00
Filed: 1985-09-03
Abstract: A racket has intersecting strings forming a plurality of rectangular meshes, wherein the maximum diameter of the string is 1.2mm, and the intermediate portion of the strung area which is usually struck by the ball has at least 121 meshes per 100 sq. cm, whereby the vibration induced when a ball is stuck can be minimized and the player can strike the ball controllably. String tension may be 18-20 kg.
Patent GB-2181006-A (GB)
Title: Two-way radios
Inventor: HENG YONG-CHIE
IPC: H04B1/50
Filed: 1985-09-28
Abstract: In order to be able to use only one Voltage Controlled Oscillator (VCO) 1 to cover two frequency ranges without having unacceptably high sensitivity, the VCO 1 includes a coil 2 whose effective length may be decreased or increased by switching an RF bypass capacitor 15 connected in parallel with the coil, into or out of the VCO circuit, respectively. A voltage source 14 provides a higher voltage than voltage source 5 so that when voltage source 14 is on a PIN diode 16 is reverse biased and the entire length of the coil 2 is used so that the VCO synthesises low frequencies. When the voltage source 14 is off diode 16 is forward biased and the coil 2 is effectively shortened by bypass capacitor 15 so that the VCO synthesises high frequencies. <IMAGE>
Patent GB-2181822-A (GB)
Title: Firework launcher
Inventor: JACKSON ROY DAVID
IPC: F42B4/20
Filed: 1985-10-21
Abstract: Apparatus for use in the safe launching of fireworks (2) of the kind which have rocket motors comprises a launcher (1) unitarily moulded from a polypropylene copolymer or other synthetic plastics material, the launcher (1) exhibiting a circular base (7) whose upper side affords a reaction surface, a plurality of channel-shaped guideways (10) projecting upwardly from the base (7) at equiangularly spaced apart locations around the centre of that base (7) and a plurality of ribs (8) that project downwardly from the lower surface of the base (7) to terminate jointly in a blunt point (9). In use, the pointed ribs (8) are pushed downwardly into soft earth until the base (7) lies just above the ground surface (11) and fins of a tail fin assembly (4) of the firework (2) that is to be launched are entered downwardly into the guideways (10) with a fuse (6) of the firework (2) projecting laterally between two of the guideways (10). Upon igniting the rocket motor of the firework (2) by way of the fuse (6), the tail fins of the assembly (4) co-operate slidably with the guideways (10) in preventing the firework (2) from tilting. By the time that the fins of the assembly (4) leave the upper ends of the guideways (10), the firework (2) will have developed its own directional stability to prevent it from being deflected dangerously sideways by, for example, a strong gust of wind. <IMAGE>
Patent GB-2182191-A (GB)
Title: Wind instrument cleaning device
Inventor: SCULL IAN
IPC: G10D9/00
Filed: 1985-10-29
Abstract: A cleaning device for wind instruments, particularly instruments having a tapered bore, comprises a resilient spring member (1) covered with an outer absorbent coating (2) and wound into a preformed helix or spiral. The device is attachable at one end to a draw string by means of which the device can be pulled through the bore of the instrument. <IMAGE>
Patent GB-2190077-A (GB)
Title: Light weight glass-ceramic armour
Inventor: JONES DR R W
IPC: F41H5/04
Filed: 1986-02-13
Abstract: Glass-ceramic armour of density less than 3.4 x 10<3> kg/m<3> which is employed in conjunction with a composite backing material. Comprises  Lithium Zinc Silicate  Lithium Alumino Silicate  Lithium Zinc Alumino Silicate  Lithium Magnesium Silicate  Lithium Magnesium Alumino Silicate  Magnesium Alumino Silicates  Calcium Magnesium Zinc Silicate  Magnesium Zinc Silicate  Zinc Alumino Silicate  Calcium Phosphate  Calcium Silico phosphate Barium Silicate. 3
Patent GB-2171795-A (GB)
Title: Device for controlling the temperature of heating elements
Inventor: LIEBERTH KARL
IPC: H05B3/74
Filed: 1986-02-26
Abstract: A device for controlling the temperature of heating elements of electric cooking appliances is located between the heating element and a cooking surface and comprises a high thermal expansion rod (7) with zones of high heat reflection (30) and high heat absorption (31). The rod is arranged in a tube (8) having a low thermal expansion, one end of the rod being connected to a contact system used for controlling the temperature of the heating element. By varying the effective areas of the zones the switching temperature can easily be adjusted. The reflective zone (30) may be formed by a metal layer deposited by electroplating, screen printing or vapour deposition; alternatively it may comprise a sleeve (37). The absorption layer comprises the area of the rod not coated or covered. The reflective layer may comprise longitudinal, annular or helical strips. <IMAGE>
Patent GB-2190237-A (GB)
Title: Folding prism for use between two sections of a folded laser
Inventor: WILLIAMS CHRISTOPHER ANDREW
IPC: H01S3/07
Filed: 1986-05-02
Abstract: The prism 16 comprises a first face 17 arranged at the Brewster angle to a beam of radiation 18 entering the prism from a first section of the laser, a second face 17 arranged at the Brewster angle to the beam of radiation 19 leaving the prism, and at least one further face 50, 51 providing loss-free total internal reflection of the beam of radiation within the prism. In a further embodiment (Figs. 7 and 8) the total internal reflection within the prism takes place from the back face (72) of the prism. <IMAGE>
Patent GB-2177785-A (GB)
Title: Process and apparatus for drying ceramic blanks
Inventor: HEDRICH RAINER
IPC: C04B33/30
Filed: 1986-05-27
Abstract: The purpose is to provide, in order to ensure the highly economical drying of ceramic blanks, an automation solution which can be adapted to practical conditions of operation and which will enable subjective factors to be largely eliminated and the drying to be carried out in accordance with a criterion valid for all parameters, from the initial to the final parameters, and with freely programmable automatic drying chamber conditions, with documentation of the sequence of operations. The drying operation is controlled by a computer in three phases, the criterion adopted for the control being the mass of the ceramic blanks, which is measured by dynamometric devices suitable in the form of electronic pressure cells, and with the evaluation of the readings of measuring sensors, the temperature in the drying chamber and the mass of the ceramic blanks is determined, the gradient of the moisture reduction is calculated and the rate of the drying operation determined, a drying chamber complex being detected and controlled in time sequence by a central control unit. <IMAGE>