baber/WOPTO huggingface dataset:
Patent GB-2215805-A (GB)
Title: Displaceable valve assembly or pig
Inventor: MCCAFFERTY JOHN JAMES
IPC: F16L55/128
Filed: 1989-01-12
Abstract: A unit or pig (112) displaceable along a pipeline (10) contains valve means (46, 47) which can be closed by a piston 52. The pig is lockable at a desired location, and subsequently releasable. Thus a hydraulic piston (122) may be actuable to displace clamping segments (112) outwardly against the pipe interior. This may also compress a seal (140) to enhance sealing to the pipe (10). Displacement of the piston (122) may be prevented by a resiliently urged clamping sleeve (126 Fig 4, not shown) unless this is withdrawn by a hydraulic actuator (128). The pig may be locked by spring loaded wedges (28, Fig 1 not shown) engageing recess (26) in the pipe (10). The wedges (28) may be released by a hydraulically operated annular actuator (38). <IMAGE>
Patent GB-2239695-A (GB)
Title: A round of ammunition
Inventor: BULMAN MELVIN JOHN
IPC: F41A1/04
Filed: 1989-01-27
Abstract: A round of ammunition for use in a liquid propellant gun comprises a projectile 25 interconnected by means of a frangible threaded tube 27 with a stub case 28 which has a percussion primer 29 and a booster charge 3a. The stub case 28 has a plurality of gas vents 31 for the charge 30, which is ignited by the primer 29 via a bore 33. The projectile 25 has a rotating band 26 with an aftwardly-outwardly projecting deflectible annular lip seal 26a. At a predetermined gas pressure in the combustion chamber 120 of the gun, the tube 27 will break and the projectile be free to ride forwardly into the gun barrel 8. <IMAGE>
Patent GB-2229856-A (GB)
Title: Electro-optic transducer and sheet-metal microlens holder
Inventor: JANSSEN ADRIAN PERRIN
IPC: G02B6/42
Filed: 1989-03-31
Abstract: An electro-optic transducer assembly includes a microlens holder (20) of sheet-metal secured to a substrate upon which the transducer (10) (typically a laser chip) is secured. The microlens holder (20) has a through hole in which a spherical microlens (16) is a push-fit. Preferably the microlens holder is provided with legs (22) that can be distorted after it has been secured to the substrate, such distortion permitting fine adjustment of the final position of the lens with respect to the transducer. The transducer may be a semiconductor laser an LED or a photodetector. <IMAGE>
Patent GB-2239200-A (GB)
Title: Making explosively clad metal sheet
Inventor: HARDWICK ROY
IPC: B21B1/38
Filed: 1989-04-07
Abstract: A metal cladding layer is explosively bonded to a metal substrate to form a composite metal ingot; two ingots (10, 22) are then assembled with the cladding layers (14, 26) facing an intermediate parting layer (18) and the assembly is hot rolled to reduce the thickness and expand the area of the ingots simultaneously. The substrate may be carbon steel and the cladding layer may be nickel/chrome alloy. A steel edge strip (28) may be fusion welded around the interface of the ingots (10, 22) before rolling. The parting layer may be glass fibre tissue or chromic oxide. The method eliminates curling of the rolled sheet, facilitates the making of thinner clad sheets and reduces heat dissipation at the critical area of the bond interface during rolling. <IMAGE>
Patent GB-2233301-A (GB)
Title: Mining equipment extraction device
Inventor: BELETICH ALDO
IPC: B66D3/00
Filed: 1989-06-12
Abstract: The device (1), comprises:     a base member (4), Fig 2A; an arm (6), pivotally connected at a first end (5) thereof to said base member (4), and adapted to engage a mine roof at a second end (12) thereof, said arm (6) being adjustable in length and/or angular position; a rack (13), having a first end which is adapted to be connected to the mining equipment to be extracted from the mine; a moving mechanism (17), Fig 3B operatively connected via pistons (20) to said base member (4) and adapted to be engaged via a pawl (16) with said rack (13), such that, said moving mechanism (17) may be operated to move said rack (13) relative to said base member (4) and consequently move said mining equipment.   <IMAGE>
Patent GB-2235154-A (GB)
Title: Sawing apparatus
Inventor: RIGLEY JOHN MICHAEL
IPC: B23D59/02
Filed: 1989-07-13
Abstract: In sawing apparatus having a circular saw blade 16 which is movable along a path across a saw bed 15 on which a member such as a concrete beam to be sawn is placed, there are provided removable barrier means 41, 42 located on each side of said path of travel of the saw blade to define a fluid bath so that the portion of the member to be sawn is immersed in said bath, fluid input means for filling said bath with a fluid and fluid discharge means for emptying said bath of said fluid, the bath being filled with fluid prior to sawing such that during movement of the saw blade along said path the blade is partially immersed in said bath. <IMAGE>
Patent GB-2221655-A (GB)
Title: Point-of-sale document printers
Inventor: MIRPURI SURESH PARSRAM
IPC: G07G5/00
Filed: 1989-07-28
Abstract: POS equipment for writing a cheque or sales voucher comprises a document path (10) having end openings (14, 15) either of which can be used as the input. The direction of operation of the document drive means (17, 18) and printing means (16) is set by document sensors (11, 13) one adjacent each opening (14, 15). <IMAGE>
Patent GB-2225129-A (GB)
Title: Setting rolling mill roll gaps
Inventor: TSUGENO MASASHI
IPC: B21B37/48
Filed: 1989-09-19
Abstract: A method of setting roll gap of a rolling mill including a plurality (n) of tandem-arranged mill stands F1, F2 ..., Fn, comprises: calculating a cumulative reduction ri at stand Fi (i = 1, 2, ..., n) from a bar thickness HR at the entrance of the rolling mill and a setting thickness hi at the exit of stand Fi (as opposed to using the thickness of the bar at the entrance and exit of the stand); calculating from ri a cumulative strain  epsilon i; calculating from  epsilon i the resistance to deformation km; calculating from Km a rolling force Pi<CAL> of the stand Fi; calculating from Pi<CAL> a roll gap Si; and setting the roll gap at stand Fi to equal Si. 
<IMAGE>
Patent GB-2227279-A (GB)
Title: Device for locking an open window
Inventor: TIDMAN PER
IPC: E05D15/44
Filed: 1989-09-25
Abstract: A device for locking a pivotable window (3) in at least one opening position comprises a first locking element (11) displaying a first catch and a second locking element (12) displaying a second catch. The first locking element (11) is arranged in a channel in the fixed frame (2) and the second locking element (12) is arranged on a stay arm (5) or link, which is arranged to extend between the fixed frame and the movable frame. The two said locking elements (11 and 12) are arranged to connect with each other, when the window is opened to define e.g. a ventilation position. The element (11) is suitably in the form of a spring strip and is displaceable into the channel to allow the second element to move past it so that the window can be opened further e.g. to a cleaning position. The window can be locked in its fully opened position by a further locking device formed as a pivotable element (10). <IMAGE>
Patent GB-2236251-A (GB)
Title: Anti-AIDS virus agent
Inventor: KOJIMA EIJI
IPC: A61P37/04
Filed: 1989-12-08
Abstract: An anti-AIDS virus agent contains a 2', 3'-dideoxypurinenucleoside represented by the structural formula (I> <IMAGE> as active ingredient.o
Patent GB-2226395-A (GB)
Title: Glass-made lens for vehicle headlights
Inventor: NAGANAWA MASAHITO
IPC: F21V5/00
Filed: 1989-12-14
Abstract: The invention relates to a glass-made lens having a front surface portion and a peripheral wall portion integrally formed with the front surface portion and projecting in the rear direction from the circumference of the front surface portion. The front surface portion is formed to have a curved surface portion and is formed into a twisted form. This design of the lens increases the mechanical strength of the front surface portion and compensates the decrease in the strength due to the thin thickness and to the increased size.
Patent GB-2240609-A (GB)
Title: Fluid control valve
Inventor: WOOD ANTHONY JOHN
IPC: F16K11/07
Filed: 1990-02-02
Abstract: In a hydraulic spool valve 40 of the edge control type the peripheral ends 31, 33 of a spool land 47 cooperate with a radial service port 41 to define the degree of opening of the port 41 to supply or return port 19. The spool 25 is located in a sleeve 14, itself located in a housing 11 and O-ring seals 22', 22'' inhibit leakage between sleeve and housing beyond the seals. Leakage fluid up to the seals exerts a contracting force onto the sleeve and when the spool is in a neutral position closing the service port striction occurs between the sleeve and the end 36 of the spool land closest to the return port. Both the service port in the sleeve and the spool are constructed such that with the spool in the neutral position a groove 48 in the spool land 47 extends towards the return port 19 so that the end 50 of the groove is at least in line 51 with the O-ring seal 22' and the supporting end region 36 of the spool land, inevitably contacting the sleeve, does so at an axial part not subjected to a net contracting fluid pressure. <IMAGE>
Patent GB-2228005-A (GB)
Title: Nitromethyl thioethers and sulphones
Inventor: COX MICHAEL THOMAS
IPC: C07C323/03
Filed: 1990-02-02
Abstract: Thioethers of the formula Q.S.CH2.NO2 (III), in which Q is an optionally substituted aromatic moiety, are obtained by heating alkylthio compounds of the formula Q.S.R (IV), in which R is (1-4C) alkyl, with halogenonitromethanes. The thioethers are intermediates for the production of a range of aldose reductase inhibitory nitromethane derivatives of the formula Q.SO2.CH2.NO2 (I) which are useful in the treatment of certain complications of diabetes.
Patent GB-2236062-A (GB)
Title: Integrated circuit package
Inventor: MORAN PETER
IPC: H01L23/498
Filed: 1990-05-10
Abstract: In the fabrication of an integrated circuit package, leads 10 that carry an electrical signal from integrated circuits inside of the package to the outside are connected to conductors 70 inside the package prior to encapsulation in plastic. The conductors 70 are initially formed on a multilayer metal foil 40 by a photoresist method. The leads are soldered thereto at 75 and the package is placed in a mould 80. Thermoplastic is then injection moulded around the package and the metal foil 40 is finally removed from the package by etching. Integrated circuits may then be attached to the exposed conductors 70 within the package. <IMAGE>
Patent GB-2232610-A (GB)
Title: Method and device for removing liquid condensate from a compressed-air system
Inventor: SCHUMACHER JOSEF
IPC: F17D3/14
Filed: 1990-06-01
Abstract: A method for the simple removal of liquid condensate, in particular of water or condensation, from compressed-air systems alternately subjected in operation to positive pressure and atmospheric pressure is proposed, in carrying out which the compressed-air system is first of all connected for a limited period, at intervals or after each subjection to positive pressure, to a vacuum generator in order to promote reevaporation of the condensate and is evacuated by the latter before atmospheric pressure is passed in or let in again. 
<??>The method can advantageously be developed further by permitting a highly restricted reverse flow through the compressed-air system. 
<??>Finally, several variants of compressed-air systems with which the method according to the invention can ha carried out are described. 
<??>The method is particularly suitable for use in small-volume compressed-air systems which do not have to be permanently subjected to positive pressure, e.g. in pneumatic door-closing aids for motor cars. 
<IMAGE>
Patent GB-2237472-A (GB)
Title: CCD imager with anti-blooming device
Inventor: TANI NOBUHIRO
IPC: H04N5/335
Filed: 1990-08-03
Abstract: An interline transfer CCD imager includes a light receiving portion 52, a transfer gate and vertical transfer register 53, in order to remove unwanted or excess charge accumulated by the photodiode, an overflow gate  phi  OFD is provided on the rear surface of the imager substrate 51. Overflow gate driver 21 provides switching between two voltage levels V1 and V2 V2 being greater than V2 the higher of which decreases the potential of P-well and consequently causes charges in the light receiving portion 52 to be swept into the substrate 51. <IMAGE>
Patent GB-2235618-A (GB)
Title: Vehicle seat belt apparatus
Inventor: KOSUGI NORIYUKI
IPC: B60R22/46
Filed: 1990-09-03
Abstract: The apparatus has a mechanism 12 for removing slack from a seat belt 2. The mechanism includes drive means 10 actuated in response to a detection signal indicative of a prescribed degree of deceleration of a vehicle, and pawl gears 6, 7 which, in response to a driving force produced by the drive means 10 are meshed with a gear 5 that co-rotates with a seat belt take-up for rotating the take-up reel in a direction that removes slack from the seat belt. Gears 6, 7 are normally held away from gear 5 by pins 8a-d, but the pins snap when the driving force reaches a given value. The driving force is transmitted via a wire rope 9 anchored at its end 9a by a pin which snaps at a greater driving force than that which snaps the pins 8a-d. Such releasable anchorage enable subsequent temporary re-use of the seat belt. The gears 6, 7 may be biassed towards the gear 5 by a spring (13, Figs. 4 & 5). <IMAGE>
Patent GB-2250202-A (GB)
Title: Surface marked balls
Inventor: STEWART MARK JOSEPH ROBERTSON
IPC: A63B45/02
Filed: 1990-11-29
Abstract: Billiard, snooker or pool balls comprise markings recessed into their surface allowing them to be identified by touch alone and thus distinguished from similar balls.
Patent GB-2250628-A (GB)
Title: Composite cables
Inventor: SMART DANIEL HENRY
IPC: H01B11/18
Filed: 1990-12-06
Abstract: A composite cable comprises a coaxial cable (1) for carrying CATV services and a quadaxial cable (8) for carrying telecommunications services. The conductors (1, 11, 12 and 13) of the quadaxial cable (8) are disposed at equal spacing around the periphery of the coaxial cable (1) so as to provide a relatively large number of bending planes for the coaxial cable. The quad conductors are twisted around the coaxial cable to facilitate bending of the composite cable. The conductors of each telephony pair (10, 12; 11, 13) are positioned on opposite sides of the coaxial cable from one another. The sheath (20) may be loaded with carbon to provide screening. Alternatively a screening layer (30 Fig 2) and on outer coating (32) may be provided.   <IMAGE>
Patent GB-2242293-A (GB)
Title: Apparatus and method for dynamic linking of computer software components
Inventor: HENINGER ANDREW G
IPC: G06F9/44
Filed: 1990-12-07
Abstract: An apparatus and method for the dynamic (execution time) linking of object oriented software components comprises a computer system, including a set of at least two software components, and means for dynamically linking object oriented software components during run time execution of the program. There are two main features. First, a query function is provided to allow an application component to determine, during program execution time, the name and location of library classes available for use. Second, the application component can create (instantiate) instances of derived classes of an abstract base class. The application component can manipulate the instantiated object using the abstract interface provided by the base class definition. The implementation of the method involves processing at two steps in the software generation cycle. First, the prior art static linker must be modified to provide processing support at link time. Second, the main features are performed at program execution time.
Patent GB-2243928-A (GB)
Title: Method and apparatus for controlling the delivery rate of a compressor
Inventor: FRIEDRICH DIPL ING DR BAUER
IPC: F04B49/24
Filed: 1991-03-14
Abstract: In a method for the continuous control of the delivery rate of a reciprocating compressor by the occasional holding open of the suction valves by means of associated lifting devices (8), the magnitude of the lifting force depends on the drive power received by the drive motor (11) of the compressor (3). The lifting force may be limited depending on the drive power. The drive power received by the drive motor (11) of the compressor (3) is supplied to a controller (10) as a signal. The controller (10) receives a control signal as the reference value and the drive power of the drive motor (11) as an actual value. From the difference between these two signals, the controller (10) determines the lifting force. <IMAGE>
Patent GB-2255038-A (GB)
Title: Staple remover
Inventor: MORRISH PETER GEOFFREY ALAN
IPC: B25C11/02
Filed: 1991-04-26
Abstract: A staple remover includes an integrally moulded polycarbonate or acetal plastics spring 10 having a pair of limbs 14 which are joined at one end 12 and which carry at their other ends a pair of staple extracting jaws 26, 28 formed with channel section extensions. Base 12 urges limbs 14 to part the jaws, and finger pressure causes interengagement of the jaws for conventional staple removal. Lugs formed on the channel extensions engage under lugs moulded on limbs 14, and hooks moulded on the limbs engage by snap action behind ledges on the channel extensions, thereby interlocking jaws 26, 28 with limbs 14. Base 12 is of like width as the limbs but thinner along its outer edges and thinner still along part of its width, whereby the limbs are rigid, the base is resilient and fine adjustment of the resilience is made possible during design. Limbs 14 are rectilinear and splayed apart in the normal shape of spring 10, additionally enabling simplicity of moulding and appearance, with outer flats having intelligence moulded thereon and with finger grips. <IMAGE>
Patent GB-2245329-A (GB)
Title: Hydraulic clutch release device
Inventor: MATUBARA TOSHIO
IPC: F16D25/08
Filed: 1991-05-15
Abstract: A release bearing 8 presses against the center of a diaphragm spring 1 as a hydraulic pressure is introduced in a cylinder space 13 on depression of a clutch pedal. A predetermined weak hydraulic pressure set by a control valve 26 remains within the cylinder space 13 after the clutch pedal is released so that the release bearing 8 is lightly pressed against the diaphragm spring 1 even when the clutch pedal is not depressed. The control valve 26 comprises a ball valve 33, which opens when the clutch pedal is depressed, in a housing 29 which moves against spring 31 to open the ball valve by way of pin 36 when the pedal is released. The spring 31 determines the weak residual pressure. A clutch release lever may be acted upon by a slave piston instead of the arrangement shown. <IMAGE>
Patent GB-2248952-A (GB)
Title: Hierarchical integrated circuit cache memory
Inventor: FOSSUM TRYGGVE
IPC: G06F12/08
Filed: 1991-06-24
Abstract: A hierarchical cache memory includes a high-speed primary cache memory 24 and a lower speed secondary cache memory 25 of greater storage capacity than the primary cache memory. To manage a huge number of data lines interconnecting the primary and secondary cache memories, the hierarchical cache memory is integrated on a plurality of integrated circuits, each of which includes a portion of the primary cache memory, a portion of the secondary cache memory, and data path circuits interconnecting the portions of the primary and secondary memories to portions of a data processor port 26 and a main memory port 27. The primary cache memory, for example, includes ECL memory elements, and the secondary cache memory includes CMOS memory elements. In a preferred construction, the primary cache memory has address input lines wired in parallel to address input lines of the secondary cache memory, and data input lines wired in parallel to data input lines of the secondary cache memory. The data input lines of the cache memories are connected to data output lines of a parallel/serial shift register having a parallel input connected to data output lines of the secondary cache memory, and a serial data input connected to the main memory port. For write-back of data. the serial/parallel shift register includes an additional parallel input connected to data output lines of the primary cache memory, and an additional parallel input connected to the data processor port. <IMAGE>
Patent GB-2247898-A (GB)
Title: Pressing trailing end of wound material onto reel
Inventor: FIDDES GORDON ALEXANDER
IPC: B65H65/00
Filed: 1991-08-20
Abstract: A coil of material 25, e.g. tube, wound on a skeletal reel has its cut, trailing, end 26 pressed into place by hydraulically pivoting arm 21 upwards about pivots 19 and sideways about pivot 20 so that arm roller 20 pushes on end 26. The skeletal reel, which may release the formed winding, may be mounted on a wheeled or tracked frame (Fig. 1) which may be driven. Arm 21 may be removed from the frame for attachment to other reel-support frames. <IMAGE>
Patent GB-2261795-A (GB)
Title: Signal routing
Inventor: GOREN OZ
IPC: H04Q3/52
Filed: 1991-11-22
Abstract: A device for providing signal routing within a circuit comprises first (30) and second (43) M x N matrices of switching elements coupled together, a plurality of inputs (31-42), coupled to said first matrix (30), for receiving a plurality of input signals and a plurality of outputs (44-55), coupled to said second matrix (43), for outputting a plurality of output signals. The first (30) and second (43) M x N matrices provide a routing path for the plurality of input signals (31-42) to the plurality of outputs (44-55). <IMAGE>
Patent GB-2250992-A (GB)
Title: Tetrazole blowing agents
Inventor: ONISHI ATSUHIRO
IPC: F16C25/06
Filed: 1991-11-25
Abstract: The blowing agents comprise tetrazoles and their derivatives which have melting points over 200 DEG C and are used to manufacture high quality foaming thermoplastic synthetic resin moldings, especially engineering or superengineering plastics moldings. The tetrazoles are of formulae (I) to (V) where the definitions are to be formed inside the specification. <IMAGE>
Patent GB-2262863-A (GB)
Title: Radio communications apparatus with diversity
Inventor: BARTLETT IAN
IPC: H04B1/74
Filed: 1991-12-23
Abstract: This invention relates to apparatus and a method for provision of diversity in reception in a communications system such as the GSM cellular radio system. A received call of low quality is received through a first of two antennas (15, 16) and through a first of a plurality of receivers (10 - 14). A spare receiver that is not required for receipt of a call is identified and the spare receiver is switched to receive the call through the second antenna. The spare receiver is tuned to the frequency of the call of low quality the calls are diversity combined through the first receiver and the spare receiver.
Patent GB-2252935-A (GB)
Title: Seamless endless belt and process for manufacturing same
Inventor: MARUYAMA SATOSHI
IPC: B29C55/28
Filed: 1991-12-23
Abstract: A seamless endless belt is manufactured by biaxially stretching a tube of a polyether-ether-ketone resin while inflating the tube at a temperature above the glass transition temperature of the resin by below the melting point of the resin, optionally thermosetting the stretched tube at 150-320 DEG C while relaxing it at a rate of relaxation of 5-30% and then cutting the resultant tube in round slices. The stretched tube may be laminated with a tube of a thermoplastic polyurethane resin to form a laminate tube of a polyether-ether-ketone resin in the outer and inner tubes with an intermediate tube of a thermoplastic polyurethane resin. A seamless endless tube is manufactured from the laminate tube by heating above the melting point of the polyurethane resin whereby the outer and inner tubes of the polyether-ether-ketone resin are thermoset while being relaxed and the intermediate tube of the polyurethane is molten and integrally bonded to the outer and inner tubes. The belts have heat-resistance, dimensional stability at a high temperature and mechanical strength and can be used as conveyor belts.