baber/WOPTO huggingface dataset:
Patent GB-2314670-A (GB)
Title: An optical amplifier for an optical transmission system
Inventor: NABEYAMA YOSHIO
IPC: H04B10/032
Filed: 1996-12-23
Abstract: An optical amplifier 10 which may be a repeater in an optical transmission system comprises a rare earth doped fibre 22 pumped at each end via an optical coupler 25 which has inputs from a redundant arrangement of two pump sources such as laser diodes 11,12. At least one photodiode 26 may provide a feedback signal to control the laser diodes so as to stabilise the output of the amplifier. The photodiode(s) 26 may be located at the output of the fibre 22, in the fibres F3,F4,F5,F6 which connect the laser diodes to the fibre 22, or adjacent the laser diodes. In one arrangement, the laser diodes 11,12 are controlled 50 that one is normally on and the other is normally off, the combined output of the two lasers being maintained when they are switched over by ramping the output of the one down and ramping the output of the other up. In another arrangement, both laser diodes normally operate at half power, and when one falls the other goes to full power.
Patent GB-2313084-A (GB)
Title: Hammer drill with mechanism for preventing useless strikes
Inventor: ARAKI KYOUJI
IPC: B25D11/00
Filed: 1997-05-13
Abstract: A hammer drill has a rotatably driven cylinder 2 which drives a tool bit 10 via an adapter 3 which slidably engages with the cylinder by means of a splined region 2G,3G on each of the two bodies. A piston 16 is caused to reciprocate within the cylinder and this causes a striker 9 to reciprocate via an air cushion created in a chamber 41. The striker further causes the tool bit to reciprocate against a work piece. When there is no pressure on the tool against a work piece the adapter is allowed to remain at the forward end of the tool and a resilient member 4 prevents any rearward motion of the adaptor. In this manner no striking action is transmitted to the adaptor to thus prevent the occurrence of useless strikes. As pressure is applied to the workpiece the adaptor is pushed rearwards to overcome the resistance of the resilient member and striking action is enabled.
Patent GB-2313993-A (GB)
Title: Method and system for facilitating user input into a GUI window using a stylus
Inventor: ZETTS JOHN MARK
IPC: G06F3/0488
Filed: 1997-05-19
Abstract: A method of and system for facilitating stylus input into a text entry field in a pen-based computer system. The system detects a touch down of a stylus and determines whether the touch down is in a text entry field 65. Upon detection of movement of the stylus in the text entry field greater than a threshold, the system draws an include round the text entry field. The system sizes the include rectangle based on the size of the text entry field. The system interprets and completely inks any stroke of the stylus starting within the include rectangle within a predetermined timeout as an input to the text entry field. The system erases the include rectangle whenever it detects a stylus touch down outside the include rectangle, or the predetermined timeout expires without the system detecting a stylus touch down.
Patent GB-2321353-A (GB)
Title: Image reject mixer arrangements
Inventor: GRAHAM STEPHEN PETER
IPC: H03D7/18
Filed: 1997-11-20
Abstract: In a mixer arrangement in which quadrature outputs from I and Q mixers are to be phase-shifted at 27, 28 with respect to one another by a further 90 degrees and summed at 29-32, the phase shift circuits 27, 28 are current driven by respective differential transconductance amplifiers 25, 26 and the summing is carried out by cascode-connected summing transistors 29-32 to minimise the number of bias current paths required and reduce power consumption. In a modification (fig.6 not shown), two summing transistors may be used instead of four. In the summing transistors 29-32, the wanted components of the I, Q output signals being in phase reinforce one another and the image signals being out of phase are cancelled.
Patent GB-2332121-A (GB)
Title: Two way radio communication system, radio unit and method of operation
Inventor: KRISTIANSEN JENS
IPC: H04M1/72
Filed: 1997-12-05
Abstract: A radio unit (10, 12, 14, 22, 24, 26, 28, 30, 32, Figs 1 and 2) for operation in a two way radio communication system (20) is provided. The radio unit communicates via at least one resource (34, 36) and includes a voice logger 45, 46 for recording voice information of at least one communication resource by at least one first radio unit. The voice logging operation includes recording the voice transmissions or reception in a memory element 46. The stored voice transmissions can be transmitted to a central unit.
Patent GB-2332301-A (GB)
Title: Resonant tunnelling semiconductor devices
Inventor: PATEL NALIN KUMAR
IPC: H01L29/772
Filed: 1997-12-12
Abstract: A semiconductor device is presented which exhibits both interband and intraband tunnelling. The device comprises two active layers (21, 23) which are sandwiched between two barrier layers (3, 5). These layers are located between first and second terminals (7, 9). The active layers (21, 23) are chosen such that the conduction band edge (27) of the first active layer (21) having a lower energy than the valence band edge (25) of the second active layer (23); the first active layer (21) having a first confined conduction band energy level (29) with an energy higher than that of the conduction band edge (27) of the first active layer (21); the second active layer (23) having a first confined valence band energy level (33) with an energy lower than that of the valence band edge (25) of the second active layer (23); wherein the first confined valence band energy level (33) and the first confined conduction band energy level (29) are located at the same energy, the aligned energy level.
Patent GB-2321973-A (GB)
Title: Well logging cable with optic fibre in metal tube with conductive liner
Inventor: WALKOW ARNOLD M
IPC: G02B6/44
Filed: 1998-01-07
Abstract: A well logging cable includes first conductor elements 16 each consisting of a steel wire 16A surrounded by copper strands 16B and covered in an electrically insulating material, and at least one second conductor element 18 including at least one optical fiber enclosed in a metal tube, conductive cladding bonded to the interior wall of the tube, and the tube being covered by the electrically insulating material. The first elements 16 and the at least one second element 18 are arranged in a central bundle 15. At least one second conductor element 18 is positioned within the bundle so as to be helically wound around a central axis of the bundle. The bundle is surrounded by armor wires 12 helically wound externally to the bundle. Inner armour wires 14 and filler material 17 are shown.
Patent GB-2342424-A (GB)
Title: Flexible annular coupling with predetermined buckling direction
Inventor: POLLARD ANDREW
IPC: F16D3/79
Filed: 1998-10-02
Abstract: A flexible annular coupling has circumferentially spaced fixing portions (10) connected by flexible leaves (11). The leaves are arranged so that if they are caused to buckle by compressive stresses applied between their ends they will always buckle in the same direction. The leaves may be curved in their central parts (11<U>a</U>) so that they are offset to one side of a plane (14<U>a</U>) perpendicular to the rotary axis (14) of the coupling. Alternatively the leaves may be made of layers (26, 27) of different stiffnesses or transition portions (17) between the leaves and the fixing portions (10) may be shaped to produce the unidirectional buckling.
Patent GB-2331804-A (GB)
Title: Device for distributing air in a vehicle
Inventor: BOTTCHER ERICH
IPC: B60H1/24
Filed: 1998-11-26
Abstract: Air distributing device in a vehicle passenger compartment 11, having a longitudinally extending air duct 13 which is provided for the right-had side 12 and a longitudinally extending air duct 15 which is provided for the left-had side 14, said air ducts each being provided at the same time in the region of the vehicle floor 16 and to which in each case air can be fed via at least one air inlet opening 17,18 and which have at least one first air outlet opening 20, 21 which is located at the front and at the side and is assigned to a front vehicle footwell as well as at least one second air outlet opening 23, 24 which is located at the rear and is assigned to a rear vehicle footwell and via which the air can be output into the vehicle passenger compartment. Here, the right-hand air duct and the left-hand air duct are each constructed in a longitudinally extending, flat air box 25 or 26 in which in each case the at least one first air outlet opening and the at least one second air outlet opening are provided on the box side pointing towards the vehicle passenger compartment. The air boxes are symmetrical and are mounted extending to the right and left and are arranged in such a way that their air outlet opening distributes the air into the respective foot well close to the vehicle floor.
Patent GB-2332092-A (GB)
Title: Encapsulating semiconductor chips
Inventor: IRONS ROBERT CHARLES
IPC: H01L23/12
Filed: 1998-11-27
Abstract: In a housing of a semiconductor device there are provided a plurality of semiconductor chips (13), e.g. IGBT chips or diode chips, captivated in a preformed sub-assembly and arranged to present contact areas for connection to anode and emitter electrodes (16,1) of the semiconductor housing. Electrically conductive contact pin arrangements (9) project from electrically insulated channels (8a) in the preformed sub-assembly, an inward end of each of the pin arrangements being so arranged, when urged into its channel, as to provide an electrical connection to a part of the surface of a semiconductor chip. There is a sheet of electrically conductive material (7), resting on a base level (3a) of an inner surface of the emitter electrode and electrically isolated therefrom by an electrically insulating insert (6), as a means for distributing an electrical signal, e.g. a gate signal, and making simultaneous contact with the opposite ends of the pin arrangements. The channels (8a) and the pin arrangements (9) are such that the pin arrangements are out of contact with the semiconductor chips when the preformed sub-assembly is not supported on a surface which interacts with the opposite ends of the pin arrangements. The pin arrangements (a) may include series resistances.
Patent GB-2332417-A (GB)
Title: Safety latches for an attachment device
Inventor: HUGHES SAMUEL JOSEPH
IPC: E02F3/36
Filed: 1998-12-16
Abstract: An attachment device for releasably securing implements to eg. an excavator or digger comprises a locking device (10 Fig.1) comprising a first recess 150 closeable by a first safety latch 104 eg. a substantially L-shaped latch, and a second recess 152 closeable by a second safety latch 134 eg. a pair of safety hooks or an elongate bar. In use, when the first latch is open the second latch is closed and when the second latch is open the first latch is closed. The locking device may be hydraulically or pneumatically operated. Such an attachment device has the advantage that only one mounting pin of an implement can be released at any one time, therefore said implement will be safely retained by at least one of the two mounting points when in use.
Patent GB-2344796-A (GB)
Title: Vehicle suspensions
Inventor: HUTCHINS WILLIAM RICHARD
IPC: B60G9/04
Filed: 1998-12-19
Abstract: A vehicle suspension comprises a beam axle 10 on which the body 12 is supported by springs 14. The wheels 16 are connected to the ends of the axle 10 by pivoting arms 18, 20 and spring struts 22 which allow small amplitude movements of the wheels relative to the beam axle 10, whilst large amplitude wheel movements are accommodated by movement of the beam axle relative to the body 12..
Patent GB-2346344-A (GB)
Title: Vehicle body having elongate structural members
Inventor: DAVIDSON JOSEPH JOHN
IPC: B60P3/08
Filed: 1999-02-02
Abstract: A vehicle body (10) is mounted on the chassis (12) of a trailer or load carrying vehicle (14). The vehicle body (10) comprises a lower section which consists of two elongate structural members (18), each having an upwardly curved section at a front end. The body also comprises an upper section which also consists of two elongate structural members (26), each of the structural members (26) having a downwardly curved section at a front ends. The front ends of the upper section members (26) and lower section members (18) are pivotally joined. The vehicle body (10) is particularly for use in carrying loads comprising wheeled vehicles.
Patent GB-2348507-A (GB)
Title: Fluid density measurement device
Inventor: STUART-BRUGES WILLIAM PETER
IPC: G01N9/16
Filed: 1999-03-31
Abstract: A fluid density measurement device 10 comprises a float/weight assembly 20 with a float 22 and weight 24 pivotable about an axis 26. The float/weight assembly adopts an orientation about the horizontal axis which is dependent upon the density of the fluid in which the device is immersed. A reference wheel 74 is rotatably mounted freely and is eccentrically weighted so as always to adopt a defined orientation relative to the vertical direction. A follower wheel 72 is magnetically linked by magnets 70,76 so as to follow the rotation of the float/weight assembly. A detector 80 detects the relative positions of the two wheels, thus sensing the orientation of the float/weight assembly regardless of the rotary position of the device as a whole. Detection may be done electrically or electro-optically. Also, the detector 80 may take the form of an optical, capacitive, inductive or potentiometric detector as an alternative. The two wheels are housed in a pressure-resistant compartment 60. As an alternative to the magnetic coupling and the detector wheels, the float/weight assembly may alter the position of a magnetic core so as to vary the transmission characteristic between two coils. The coils can be coupled to the detector in the pressure-resistant compartment by inductive windings (Fig.4).
Patent GB-2348778-A (GB)
Title: Authentication in mobile internet access
Inventor: VILANDER HARRI TAPANI
IPC: H04L12/56
Filed: 1999-04-08
Abstract: A method of authenticating a mobile terminal 9 in a communication access network, preferably a mobile network, where the terminal 9 subscribes to an Internet Service Provider (ISP) 11 rather than a mobile network. When the terminal wishes to register in the access network, it transmits a unique International Mobile Identity (IMI) or a part thereof to the network. This is then used by the network to determine the Internet Protocol (IP) address of the terminal's home ISP by comparison with an ISP Internet Protocol (IP) address database 12. The access network then transmits an authentication request to the Internet Service Provider over the internet using the identified IP address. The International Mobile Identity (IMI) is similar to the GSM International Mobile Subscriber Identity (IMSI) and preferably has a country code part identifying the country of the home ISP, an operator ID part identifying the ISP and a subscriber ID part identifying the subscriber within the home ISP. The mobile network is preferably a Universal Mobile Telecommunications System (UMTS) comprising sub-networks including a radio network 1 having radio network controllers (RNC) 6 each connected to an Internet Access Server (IAS) 8 and a packet switched core network 4 having GPRS Support Nodes(SGSN)/Gateway Support Nodes (GGSN) 7.
Patent GB-2350055-A (GB)
Title: Reservoir toothbrush and spray
Inventor: REECE BRIAN
IPC: A46B11/00
Filed: 1999-07-12
Abstract: In a reservoir toothbrush, water or mouthwash is urged by a spring-biassed piston from the reservoir to be jetted from among the bristles. The spring is compressed by pulling the piston to the distal end of the reservoir using a ring pull on the piston rod, a notch in the rod releasably engaging a spring clip at the distal end. Rod rotation effects release from the clip. A valve controls liquid flow to the brush head.
Patent GB-2344781-A (GB)
Title: Tube gripping apparatus
Inventor: DAGENAIS DANIEL W
IPC: E21B19/16
Filed: 1999-07-22
Abstract: A tube gripping apparatus 1 comprises a frame 2 having a central pipe opening 3, an entry throat 4 for receiving a pipe and a jaw 5 on a support 6 fixable across the throat 4, at least one displaceable jaw assembly 8 comprising a radially displaceable jaw 9 slideably received in a shaft 10, a linear actuator 36 bearing against a respective wedge 11 which has a face 12 in contact with a wedge end 14 of the displaceable jaw 9 and a face in contact with a thrust seat 15 to ensure force is transmitted to the jaw 9. Thus activation of the linear actuator 36 radially displaces the jaw 9, reducing the sze of the pipe opening 3. The jaws (fixed and displaceable) may be repositionable to accomodate a variety of pipe sizes. The wedges may also be interchangeable to allow control over the schedule of force being applied to the jaw. If more than one displaceable jaw is present, each jaw may have its own actuator or a single actuator may control more than one jaw (Figure 14).
Patent GB-2348987-A (GB)
Title: Upgrading firmware from a web site using an applet
Inventor: CLOUGH JAMES E
IPC: G06F9/445
Filed: 1999-12-01
Abstract: A system and method upgrade a firmware image in a device from firmware images stored at a website. A browser is used to browse to the website. The browser automatically downloads (22) applet code. Either the applet code or a user selects (24) a device for upgrading. The applet code discovers (26) the model and firmware version number of the selected device. The applet code builds (28) a list of available firmware images for the selected device from the firmware images stored at the website. Either the applet or a user selects (30) a firmware image from the list of firmware images for the selected device. The applet code fetches (32) the selected firmware image and stores it locally. The applet code then replaces (34) the current firmware image of the selected device with the selected firmware image.
Patent GB-2347144-A (GB)
Title: Fluorocarbon-containing hydrophilic polymer coating composition
Inventor: N OBIOHA CHIMERE
IPC: F28F13/18
Filed: 1999-12-09
Abstract: A fluorocarbon-containing hydrophilic polymer coating composition comprising hydrophilic monomer selected from acrylamide, vinyl acetate, vinyl alcohol, vinyl pyrrolidone and fluorocarbon containing hydrophobic comonomer, such as (N-ethyl perfluorooctane) ethyl acrylate, (N-(N-ethyl perfluorooctane sulphonamide) ethyl methacrylate. The hydrophilic polymer coating composition may further comprise a water soluble polymer, such as an epoxide, polyvinyl alcohol, acrylic acid or a polyurethane and a curing agent. The coating composition produces hydrophilic coatings on metallic surfaces having a contact angle below 50{. Also disclosed is a method of coating a metallic surface, such as a heat exchanger, using the hydrophilic polymer coating composition.
Patent GB-191420486-A (GB)
IPC: B66B19/06
Abstract: 20,486. Campbell, W. Oct. 3. Mechanical telegraphs; bell signals.-A mine signalling-apparatus of the type having a dial and revolving-pointer mechanism combined with an audible signal is provided with a weight and screw mechanism for automatically returning the pointer to zero when the next signal is given. The pointer shaft c, Fig. 2, is rotated intermittently by a ratchet e adapted to be operated by a weighted pawl f pivoted on a sliding-frame g, which is actuated by the usual cord or wire h and is connected by a wire &c. i with the usual gong or other audible signal. The shaft c is held in the position into which it is moved by a second ratchet-wbeel j controlled by a pawl k<1> formed on a spring-controlled lever k, one end of which is connected by a releasing-link n to any suitable part of the winding-gear, while the other end carries a pivoted catch k<2> adapted to be turned, through an amount limited by a stop k<5>, by a movable weight or collar l normally resting on a ledge g<1> secured to the frame g. The collar is hollow, Fig. 7, and, as it rises, is adapted to slide freely over a screw m, but in its descent it is retarded and rotated by the engagement of a tongue l<1> with the screw-threads. In operation, when the cord h is pulled, the frame g is raised carrying with it the collar l, and the pawl f slips past the ratchet-wheel e. When the frame is released, the gong is sounded, and the pawl f turns its ratchet-wheel so that the pointer indicates 'one' on the dial. The collar l, owing to its rotation, returns to its original position some time after the frame g, and slips past the catch k<2> without releasing the lever k, the pawl of which holds the shaft c in the position into which it has been turned. When the signal is repeated, the collar l, in rising, turns the catch k<2> until it brings up against its stop k<5>, and causes the lever k to be turned so as to release the shaft c, whereupon the pointer returns to zero. When any signal other than one' is to be given, the frame g is raised and lowered at a rate such that sufficient time does not elapse between the pulls to allow the collar to travel to its lowest position.
Patent GB-191420576-A (GB)
IPC: D05B57/00
Abstract: 20,576. Fairweather, W., [Singer Manufacturing Co.]. Oct. 6. Sewing - machines; chain - stitching and double-loop and other loop stitching; lockstitching by hooks and shuttles.-The shaft 11, Fig. 1, actuating the loop - taker, is driven from the needle-actuating shaft 4 by belt or gear connexions, and provision is made for automatically stopping the shaft 11 independently of the movements of the shaft 4 when the movements of the looptaker are accidentally obstructed. The beltpulley 13 is loose on the shaft 11, and is connected to the disk 15 fast thereon by means of the stud 21, Fig. 3, with a roller 22 carried by the pulley, and the spring pawls 19, 20 carried by the disk. The clutch device may be interposed between the belt - pulley 12 and the shaft 4.
Patent HU-T60837-A (HU)
Title: Device for preventing the seizing of blind locking industrial gate
Inventor: KRAEUTLER BERNARD
IPC: E06B9/58
Filed: 1992-02-19
Abstract: Handling door which can be raised vertically, for industrial purposes, of the shutter door type, comprising, for the closing of an opening, a shutter which may be flexible or consist of rigid panels articulated to one another, reinforced by reinforcement bars whose ends are guided in slideways formed by a bottom (7) and two guiding walls, a first wall (8) against which the shutter is applied in the lowered position, and a second wall (9), the said slideways consisting of, or being formed by, lateral struts belonging to a frame surrounding the opening, the width of each slideway being reduced at its lower part, by means of a filling element (10, 20) accommodated inside the slideway, against the bottom of the slideway and against the said second guiding wall, the said element having a guiding incline comprising a guiding surface (21) and a positioning surface (24) opposite the said first guiding wall of the slideway, sloping from the lower part towards the said second guiding wall, to delimit with the said first wall a positioning volume narrowed towards the lower part, and a clearance surface (23), opposed to the bottom of the slideway, characterised in that the clearance surface slopes from the lower part towards the bottom of the slideway, by an angle lying between approximately 1 and 10 DEG , preferably between 2 and 5 DEG , so that the horizontal spacing between the clearance surfaces of the two slideways of the two vertical lateral struts opposite each other increases towards the top. 
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