baber/WOPTO huggingface dataset:
Patent GB-2196751-A (GB)
Title: Optical switching device
Inventor: BANBURY JOHN RANDOLPH
IPC: G02F1/1347
Filed: 1986-09-03
Abstract: An optical switching device comprises a plurality of electrically-controllable birefringence cells 29, 31, for example liquid crystal pi-cells, arranged in series, so that light passes through the cells in sequence. The cells are arranged between two polarising films 25,27, and each cell comprises a liquid crystal film 1,3 contained between a pair of parallel glass plates 5,7,9 separated by spacers 11. Electrical leads 15,17 are connected to transparent conductive coatings 13 on the surface of plates 5,7,9 adjacent to the films 1,3. Synchronised electric fields are applied across the cells to change the phase retardation of the light transmitted through the device from a first value to a second value. Each cell has a time-dependent birefringence after cessation of the fields such that the time taken for the phase retardation produced by the device to change back from the second value to the first value is less than the time taken for each cell to relax back to its equilibrium state. The cells preferably include a single-frequency or a two-frequency nematic liquid crystal material. <IMAGE>
Patent GB-2194994-A (GB)
Title: Clutch
Inventor: ROCHFORD DAVID MICHAEL
IPC: F16D13/71
Filed: 1986-09-12
Abstract: A friction clutch comprises a driven plate (7) having an inner axially-extending central portion, e.g. a flange (13), supporting a radially- outer annular friction lining (12), and a pressure plate (5) having a central aperture accommodating the central portion of the driven plate (7). The radial clearance (r) between the central portion and the pressure plate (5) is sufficiently small, e.g. no more than 1.5mm, to provide self alignment between the driven plate (7) and the pressure plate (5) during assembly, without the need of a special tool. <IMAGE>
Patent GB-2196571-A (GB)
Title: Router for removing mortar from brickwork
Inventor: WILLIAMS ROBERT HENRY
IPC: B27C5/10
Filed: 1986-10-22
Abstract: A router comprises a wall- engaging sole plate (46) which is pivotally attached to, and inclined with respect to, a tubular housing (12) by means of a rod (34), upon which the housing is slidably mounted. A shaft (10) is rotatably and reciprocally mounted in the housing and is biassed upwardly by means of a spring (28) which bears on a collar (26) on the shaft. The lower end of the shaft receives a routing head (18) which extends through the sole plate (46) at an angle thereto. A hammer drill is fixed to the upper end of the shaft (10) and the rotational and reciprocating movement of the routing head (18) removes mortar from brickwork. The extent of projection of the routing head (18) is adjustable by means of a bolt (38) which bears on a groove (36) in the rod (34), and the inclination of the routing head is adjustable by means of a bolt (48) which forms part of the pivot. <IMAGE>
Patent GB-2184064-A (GB)
Title: Printing on continuous webs
Inventor: GRAHAM-TROLL DENNIS
IPC: B41K3/14
Filed: 1986-12-11
Abstract: The continuous wrapper web (4) used in the making of cigarette filter rods has spaced indicia (M) printed on it as it passes between a printing roller (10) and a co-operating pressure roller (11). A spring urges the roller (10) towards the roller (11) thus causing the web (4) to be gripped therebetween; the rollers (10, 11) are rotated by reason of the web (4) being pulled along between them. Ink is fed to the roller (10) from a duct (21) via a steel roller (20) and a transfer roller (18) having a raised rubber band (19). The roller (20) is belt driven from the printing roller (10) and roller (18) is frictionally driven from roller (20). <IMAGE>
Patent GB-2187526-A (GB)
Title: Fluid transfer seal
Inventor: POPE ADAM NELSON
IPC: F02C7/057
Filed: 1987-02-16
Abstract: An apparatus and method for coupling fluid from a stator to a rotor coaxial with the stator in a gas turbine engine comprising a fluid transfer seal has an annular channel is formed in the stator communicating with a fluid passageway in the stator and with at least one fluid passageway formed in the rotor. An annular seal carrier is inserted within the annular channel coaxial therewith. At least one aperture is formed through the carrier to permit the passage of fluid. In an embodiment first and second portions of the annular carrier adjacent opposite sides of the second fluid passageway are sealed to the rotor for defining a first fluid boundary between the carrier and the rotor. First and second sliding interfaces between the annular carrier and the stator define a second fluid boundary between the carrier and the stator with the aperture of the carrier and the first fluid passageway communicating with the second fluid boundary. Fluid flows from the reservoir to the actuator by way of the two fluid boundaries and the aperture through the carrier. <IMAGE>
Patent GB-2254160-A (GB)
Title: Helmet systems
Inventor: ELLIS STAFFORD MALCOLM
IPC: A42B3/04
Filed: 1987-03-11
Abstract: A helmet system comprising a helmet (11), a vizor (13) pivotally mounted on the helmet, and mounted on the vizor (13), an electro-optical system, e.g. a night vision goggle, including an eyepiece (33) positioned between a transparent part (19) of the vizor and the user's eye so as to provide the user with a view of a scene forward of the user through the eyepiece, the eyepiece also serving as a combiner to provide the user with a virtual image of a display produced by the electro-optical system superimposed on his view of the forward scene through the eyepiece. <IMAGE>
Patent GB-2202361-A (GB)
Title: Room planning system
Inventor: MATHER JEAN
IPC: G09B25/04
Filed: 1987-03-14
Abstract: A scale model kit provides floor (3), wall (1) and furniture (5) and (6) units with locating, mutually attracting surfaces (4) and (9) in order to represent a room with the furniture arranged to choice. The mutually attracting suriaces could be magnetic, repeatable use adhesive, cling strips or statically charged surfaces. The whole, perhaps with folding of some components, can be neatly packed into and carried in a purpose built transporting case. Impressions of features, e.g. windows 7, can be 4 applied to the walls. The units can be reversible to present a selected finish. <IMAGE>
Patent GB-2190550-A (GB)
Title: Ripple frequency multiplying circuit
Inventor: VERHAAR WILFRIDUS JOHANNES WIL
IPC: H02M7/515
Filed: 1987-05-12
Abstract: A frequency multiplying circuit comprises a pair of pulse width modulation signal amplifiers (13,14) connected in parallel, the amplifiers being controllable in response to respective pulse width modulated control signals to generate respective voltages at their output terminals. An interphase reactor (23) is connected between the output terminals (24,25) of the amplifiers (13,14), the differential voltage across the reactor (23) having a ripple frequency. The arrangement is such that when substantially identical pulse width modulated control signals with other than a 50% mark/space ratio and substantially 180 DEG  out of phase, are applied to each amplifier (13,14), a signal is generated at a first position between the output terminals which is substantially symmetrically placed with respect to the interphase reactor, the signal having substantially twice the ripple frequency. <IMAGE>
Patent GB-2192945-A (GB)
Title: Unloading valve for compressors
Inventor: SWINTON-CLARKE WILLIAM JAMES
IPC: F04B49/16
Filed: 1987-07-27
Abstract: An air compressor is provided with an additional valve (7) in the cylinder head which is operable by a piston (16) in response to a governor (13) signal produced in response to attainment of a preset pressure to connect an extra closed clearance volume (27) to the compression chamber (9) for unloading the compressor. In modifications (Figs 2-4, not shown), the piston (16) may be provided with a choked bleed passage to reduce valve chatter, the valve may move away from the cylinder rather than in to it, and in its further position may also cut off the inlet passage from the inlet valve, or the valve actuating piston may lie alongside the valve and be linked to it by a rocker arm. <IMAGE>
Patent GB-2214804-A (GB)
Title: Multi-purpose comb structure
Inventor: HER MING-LONG
IPC: A46B15/00
Filed: 1988-02-04
Abstract: A multi-purpose comb structure comprises a first shell (30) having a plurality of holes (31) disposed on the front half portion thereof, and an oblong opening (34) being disposed on the other half portion thereof; a slidable tuning-fork shaped member (20) with a plurality of notches (21) symmetrically disposed on each prong thereof for the mounting of a plurality of comb pin units (22); and a second shell (10) having a rectangular opening on the front half portion thereof for the dispostion of a mirror (40), and an elongate groove (12) is disposed on the other half for the slidable location of a button element (14) which is associated with a slidable comb fork (15) so that the same can be retractably operated; and an ear pick (60) is received in a tunnel disposed on one side of the assembly shells and a nail file (50) is attached on the other side thereof. <IMAGE>
Patent GB-2223929-A (GB)
Title: Adjustable inflatable headband
Inventor: LARQUEY FRANCINE
IPC: A61F5/00
Filed: 1988-10-19
Abstract: The headband reactivates dormant hair follicles, improves the condition of existing hair and also is useful in scalp tension reduction. The headband consists of an adjustable hollow loop mounted on flexible or rigid material and may comprise an inflatable cavity or a series of spaced inflatable cavities (Fig. 3). The inflatable cavity and/or the exterior of the headband can be spherical, oval, triangular or rectangular to achieve various directional pressures when inflated. Inflation is effected through preset two way valves by a hand bulb or small helium cannister connected and disconnected via gas- tight push seal or seals. Friction pads allow adjustment of the headband and fixing of aesthetic coverings such as a hat or wig. Various colours may be incorporated on or in the headband. <IMAGE>
Patent GB-2222075-A (GB)
Title: Circulating water pool
Inventor: TERATSUJI OSAMU
IPC: A63B69/12
Filed: 1989-04-27
Abstract: A circulating water pool comprising upper passage (3), lower passage (4) and curved front and rear passages (5, 6) which are connected together to form a loop, and one or more motor-driven impellers (9) for circulating water around the loop, the lower passage including a diverging portion (17) of increasing cross-sectional area in the direction of flow and the front passage having a substantially uniform cross-sectional area over its length which is substantially equal to that of the downstream end of diverging position (17). The lower passage may have a converging portion (18) upstream of the impeller(s). Guide vanes (20) may be located in passages (5, 6). The pool may be used as a swimming pool or as a testing tank for models of ships or offshore structures. <IMAGE>
Patent GB-2233028-A (GB)
Title: A spring clip
Inventor: HENFREY MELVYN
IPC: F16B5/04
Filed: 1989-06-14
Abstract: A spring clip comprising a base plate 10, a plurality of tangs 17 projecting from said base plate for securing the base plate to a surface member 20 whose thickness is loss than the length of a tang, a clip member 11 pivotally attached to the base plate and connected by a tension spring 13 thereto, wherein, in use, the tangs 17 penetrate the surface member to which the spring clip is to be attached such that a portion of each tang projects below the said surface member such that the projecting portions can be bent over to thus secure the base plate to the surface member. <IMAGE>
Patent GB-2230307-A (GB)
Title: A mechanical seal
Inventor: KNIGHT JOHN ANTHONY
IPC: F16J15/34
Filed: 1990-03-06
Abstract: A mechanical seal (9) to seal a rotating shaft (7) that extends from a housing (3) which contains a product fluid to be retained within the housing (3), comprises a first seal (11) element coupled to the shaft (7), and a second seal element (13) coupled to the housing (3). The mechanical seal (9) is characterised by the provision of an elastomeric bellows (19) connected at one end to the second seal element (13) and at the other end to the housing (3), the bellows (19) having a radially disposed surface responsive to the pressure of the product fluid, whereby the closing force acting on the second seal element (13) is a combination of the spring action of the bellows (19) and the pressure of the product fluid acting on the surface. As a result of this arrangement the bellows (19) is responsive to changes in pressure in the product fluid to vary the area of the surface thereby to vary the closing force.
Patent GB-2229982-A (GB)
Title: Load securing device for vehicles
Inventor: SVENDSEN PAUL
IPC: B60R7/02
Filed: 1990-03-30
Abstract: A mat 1 of rubber fits snugly into the luggage compartment C of a vehicle V with little or no risk of lateral movement. Being of rubber, the mat also tends to frictionally engage the floor of the compartment. Strips of a material which comprises a multiplicity of loops are bonded to the upper surface of the mat and strips 4 of webbing having a multiplicity of hooks at each end for engagement with the loops are stretched tightly over a load L1. In addition, one or more dividers 8 may be used to restrain a load against sideways movement. Each divider comprises a vertical partition wall which has a strip of hook material bonded to its underside. By engagement of the hook material with the strips the dividers can be fixed in any convenient position on the mat to retain a load L2 against lateral movement. <IMAGE>
Patent GB-2238050-A (GB)
Title: Immunoaffinity column for simultaneous extraction of several anabolic hormone residues
Inventor: BAGNATI RENZO
IPC: B01D15/08
Filed: 1990-04-10
Abstract: A column for the simultaneous extraction of several anabolic hormone residues from biological liquids or biological tissue homogenates digested with proteolytic enzymes contains two or more gel fractions having a single polysaccharide matrix but each conjugated with a specific immunoglobulin for one of the hormones to be isolated. Conjugation may be effected by incubating an aqueous solution of said immunoglobulin with an aqueous suspension of a respective gel fraction for a time of between 3 and 12 hours at a temperature of between 4 and 25 DEG C.
Patent GB-2232901-A (GB)
Title: A dart
Inventor: GRIESINGER RAINER
IPC: F42B6/00
Filed: 1990-06-13
Abstract: A dart has a body 2 formed with a stepped longitudinal bore, into which the point 1 is inserted from the end of the body to which the flight assembly 11 is attached, the point having an enlarged portion 5 which is retained against an abutment surface 6 of the body by a detachable pin 4. The enlarged portion 5 and the abutment surface 6 may have matching tapers. The pin 4 may be threaded and the corresponding portion 8 of the bore correspondingly threaded. The invention enables accurate and simple replacement of the tip or point without adverse effects on the aerodynamics of the dart. Instead of pin 4, a threaded pin extending transversely through the side wall of body 2 to engage enlarged portion 5 may be provided. <IMAGE>
Patent GB-2247776-A (GB)
Title: Piezo electric resonator
Inventor: ISHII OSAMU
IPC: H03H9/56
Filed: 1990-09-07
Abstract: A piezo-electric resonator comprises a piezo-electric plate (11) on one surface of which a recess (12) is formed by an etching process in order to obtain a thick ring portion (15) surrounding a thin vibrating portion (18). On the entire surface of the side having the recess, an overall electrode (14) is formed by a maskless evaporation process, while a partial electrode (16a) is formed on the part of the opposite surface corresponding to the vibrating portion with a lead pattern (16b) extending from the partial electrode onto the ring portion. With this construction, a good electrical connection of the overall electrode at a step portion (8) at the periphery of the recess is ensured. <IMAGE>
Patent GB-2234220-A (GB)
Title: Scraper conveyer
Inventor: ALEXANDROVICH EIDERMAN BORIS
IPC: B65G19/24
Filed: 1990-09-12
Abstract: The scraper conveyer comprises sprockets, a horizontal closed pulling organ provided with horizontal round links and vertical round links (11) on which are mounted the scrapers (12) brought together in pairs and having, each, a base (18) and a cantilever (19). The base (18) is mounted with the possibility of being pressed against the lower part (20) of the vertical round link (11) and is provided with a slot (21) in which is located the upper part (22) of the vertical round link (11) and with limiters consisting of protrusions capable of interacting with the horizontal round links.
Patent GB-2254247-A (GB)
Title: Infusor
Inventor: WRIGHT NICHOLAS CHARLES
IPC: A47J31/40
Filed: 1990-10-09
Abstract: An infuser comprises a continuous mesh belt (1), a plurality of rollers (2, 3) around which the belt may run, means to deposit infusible solid and infusing liquid onto a zone of the belt, means (5) below the zone to collect the infusion, timing means to set predetermined time intervals, means to drive at least one of the rollers (2) to move the belt, the driving means being activated after each infusion and also after each time interval. By regularly moving the belt, damage due to the belt sticking to a roller is avoided. <IMAGE>
Patent GB-2241602-A (GB)
Title: Multidisk containing player
Inventor: WAKATSUKI KENJI
IPC: G11B19/02
Filed: 1990-10-31
Abstract: A multidisk containing player comprises: a playing device including a turntable, a pickup, and a disk clamp mechanism, the playing device being provided within a player housing (2), a magazine (5) accommodating a plurality of disks and being removably mounted on a mounting portion as installed within the player housing, and a transfer mechanism for transferring the playing device toward a disk to be played and loading the playing means to the disk to be played, and in which the magazine comprises upper and lower halves which are separable (6, 7) and also including a transfer means comprising a separating positioning means for separating said halves and for selecting a tray (11) carrying the desired disk and separating the disk in a direction orthogonal to the main surface of the tray. <IMAGE>
Patent GB-2241209-A (GB)
Title: Compound rear axle for motor vehicles
Inventor: OLSZEWSKI EGON
IPC: B60G21/05
Filed: 1991-02-08
Abstract: A rear axle (1) comprises a transverse strut (2) which is approximately V-shaped in a central region (8) and is U-shaped in end regions (4). The plane web (11) of the U-shaped end portion (4) embraces a tubular longitudinal arm (3) over about 120 DEG  to 180 DEG . The parallel flanges (9) of the transverse strut (2) in the U-shaped end sections (4) are cut-away. Thereby the ends (16) of the flanges (9) are welded in the vertical plane extending through the longitudinal axis (15) of the longitudinal arm (3). A shoe-shaped connecting plate (5) between the longitudinal arm (3) and the transverse strut (2) is as regards the flange (12) extending parallel to the transverse strut (2) at least partially butt welded externally to the planar web (11). <IMAGE>
Patent GB-2259868-A (GB)
Title: Dispensing device for multi-component compositions
Inventor: EWINGS PAUL FRANCIS REGINALD
IPC: B01F13/00
Filed: 1991-09-25
Abstract: A dispensing device for an inter-reactive multi-component composition, such as an adhesive or filling or composition, comprises a generally cylindrical housing (1) provided with a delivery nozzle (16) at one end and a piston (3) at the other end, the space therebetween being capable of containing an unmixed inter-reactive multi-component composition (2). Adjacent the delivery nozzle, the housing is provided with a mixing means communicating with both the housing and the delivery nozzle and comprising a plurality of substantially concentric baffles (9, 10) providing a flow path for the components of the multi-component composition such as to cause substantial mixing of the components within the housing (1) prior to passage through the delivery nozzle (16). <IMAGE>
Patent GB-2251189-A (GB)
Title: Fluid vaporizing apparatus
Inventor: HEINONEN ERKKI OLAVI
IPC: A61M16/00
Filed: 1991-12-18
Abstract: An anaesthetic fluid vaporizing apparatus 18, comprises a bottom housing section 28 and a cover section 27 enclosing a fluid chamber 33 containing fluid to be vaporized, and a gas chamber 34 into which fluid vaporized, a port 38 for flowing gas into gas chamber 34, wherein the vapour evaporated from fluid chamber mixes with the gas, and a port 39 for discharging from gas chamber 34 the gas and the vapour mixed therewith and evaporated from the fluid chamber. Both ports 38, 39 and their shut-off elements 36, 37 are arranged such that they are located above the fluid level when vaporizing apparatus is tilted from the normal operating position of the apparatus by more than 45 DEG  in any direction. <IMAGE>
Patent GB-2266371-A (GB)
Title: Ultrasonic oesophageal probe
Inventor: TREGONING JOHN ALLYN
IPC: A61B8/12
Filed: 1992-04-23
Abstract: An ultrasonic probe for insertion into a patient, particularly via the oesophagus, comprising emission and reception piezoelectric crystals (5) mounted on a core member (3) at substantially 45 degrees to the longitudinal axis of the core member (3). A flexible drive member (13) is provided to conduct torque to the core member (3) from the exterior of the patient to enable the orientation of the probe to be controlled. The probe tip (1) is encased in a silicon boot (9) while the flexible drive member (13) and the cables (7a, 7b) taking signals to and from the piezoelectric crystals (5) are surrounded by a copper braid (15) and a silicon tube (17).
Patent GB-2256996-A (GB)
Title: Psycho acoustic pseudo-stereo fold-back system
Inventor: SACKS BILL
IPC: H04S5/00
Filed: 1992-05-01
Abstract: This invention teaches a system of mixing sound so that a monophonic common ambience audio channel 2, derived either from a mix of an entire performance, or from a specially created audio mix, is folded back to an individual performer's earphones together with a foldback of that individual performer's microphone or electronic instrument pickup audio signal 8. The individual performer's microphone or electronic instrument pickup audio is fed to both of a performer's earphones in polarity, while the ambiance mix is fed, simultaneously with the performer's microphone or electronic instrument pickup mix, to both of a performer's earphones, out of polarity, thereby creating a psycho acoustic pseudo stereo effect so that the performer perceives the monophonic ambiance mix as a wide spacious stereophonic field from behind the performer with no specific ability to place an instrument at a specific place in the field. <IMAGE>
Patent GB-2257310-A (GB)
Title: Inverter controlled air conditioner capable of effectively reducing in-rush current at starting
Inventor: HIDETOSHI KANAZAWA
IPC: H02M1/16
Filed: 1992-05-27
Abstract: An inverter circuit 7 includes a rectifying circuit 2, a smoothing capacitor 4, and a switching circuit 5, connected to the two terminals of the capacitor 4, for outputting a voltage having a predetermined frequency upon performing switching. An auxiliary power supply circuit has a rectifying circuit 11 connected to the AC power supply 1. When the air conditioner is started, the control section 10 energizes the relay 122 for a predetermined period of time ts through the relay drive circuit 117b, so that the capacitor 4 is initially charged from the auxiliary power supply circuit, and thereafter relay drive circuit 117a energizes the electromagnetic contactor 121, so as to supply the inverter 5 and prevent in-rush current. The capacitor 4 is connected to the output terminals of the rectifying circuit 11 of the auxiliary power supply circuit 15 through a resistor 115 and normally-open contacts 122a, 122b of the relay 122. The resistor 115 may be connected in circuit in place of the contacts 122b (Fig. 4). Alternatively a diode (23, Fig. 3) may be connected in place of the contacts 122b. <IMAGE>