baber/WOPTO huggingface dataset:
Patent GB-2315096-A (GB)
Title: Closed crankcase ventilation system for i.c. engines
Inventor: RUCH DAVID M
IPC: F02M25/06
Filed: 1997-07-09
Abstract: A closed crankcase ventilation system (10) which relies on a vacuum assist from the turbocharger inlet (24) to suction blow-by gases from the crankcase. The system includes a coalescer/filter (26) which is operative to filter any oil particles which may be entrained in the blow-by gases before they are released into the turbocharger inlet (24). A pop off valve (34) is also included in order to prevent the engine (12) crankcase from becoming over pressurized as a result of back pressure caused by either a plugged coalescer/filter (26) or some catastrophic engine (12) malfunction. Further included is a vacuum limiting valve (36) which prohibits the vacuum assist produced by the air inlet (24) to the turbocharger (14) from producing too low of an absolute pressure, thereby preventing an imbalance in pressure across the seals of the turbocharger (14). The system (10) further includes a bypass valve (32) which also prevents the crankcase from becoming over pressurized by routing the flow of blow-by gases around the coalescer/filter (26) if the pressure in the crankcase becomes too great. Finally, the present invention incorporates a single mounting head (60)(fig.3) which allows the various valves and filters of the present invention to be mounted thereon. The mounting head (60) may then be conveniently attached to the engine (12) at a single location.
Patent GB-2320377-A (GB)
Title: A nonvolatile ferroelectric memory device
Inventor: CHUNG YEON-BAE
IPC: H01L27/10
Filed: 1997-07-28
Abstract: In a nonvolatile ferroelectric memory device, a memory cell is connected between bit lines (BLO, BL1), and comprises an access transistor (301) and a ferroelectric capacitor (302). The access transistor (301) includes a first electrode connected to a first bit line (BLO), a second electrode connected to one end of the ferroelectric capacitor (302), and a gate connected to a word line (WL). The other end of the ferroelectric capacitor is connected to a second bit line (BL1). During a read or write operation, the word line (W) is activated, a data signal is input to or output from a predetermined one of the first and second bit lines (BLO, BL1), and a plate voltage is applied to the other bit line (BL1, BLO). Further aspects relate to methods of driving a ferroelectric memory. Many embodiments are described.
Patent GB-2327954-A (GB)
Title: Roof tile and method of manufacture
Inventor: FIFIELD JOHN ALFRED
IPC: B28B7/00
Filed: 1997-08-05
Abstract: A flat interlocking roof tile has upper (12) and under (14) surfaces, upper (20) and lower (26) edges, two opposite side edges, an underlock (20) extending along one of the side edges and an overlock (18) extending along the other of the side edges, said upper and lower edges being presented by respective transverse ridges (28 and 30,32) which are of substantially equal overall thickness and which present the lowest points of the tile, and said under surface having regions (55, 56) that extend along the two side edges and which are substantially mutually parallel. The tile can be made by an extrusion method involving "making down" on a pallet having an upper surface which forms the undersurface of the tile. A cut - out (42) can be formed in at least the lower corner edge region of the tile, which allows portion (32a) to mask underlock (20) when the tiles are laid
Patent GB-2318311-A (GB)
Title: Method for reducing nitrogen oxide emissions from a direct injection Otto-cycle internal combustion engine
Inventor: KALVERSBERG RONALD
IPC: F02M25/07
Filed: 1997-10-17
Abstract: A direct-injection internal combustion engine 1 has a storage catalytic converter 7 for adsorption of nitrogen oxide molecules arranged in the exhaust gas line 6. In order to initiate desorption and reduction of the stored nitrogen oxide molecules, a stoichiometric exhaust gas composition must be produced for a specific operating interval. It is provided that, before reaching the adsorption capacity limit of the storage catalytic converter 7, the exhaust gas feedback rate is in each case increased for the required operating interval, depending on the operating point of the internal combustion engine 1, by a specific amount in order to produce stoichiometric exhaust gas compositions.
Patent GB-2324870-A (GB)
Title: Sensing low levels of a particular gas in an atmosphere
Inventor: SMITH RICHARD A
IPC: G01N33/00
Filed: 1997-11-04
Abstract: The system measures very low levels of a gas (e.g. oxygen) in an atmosphere, which initially has a high level of the gas. Two sensors 14, 32 for the gas are provided, one, 14 sensing high levels of the gas and the other, 32, sensing very low levels of the gas. Valves 16, 24 provide a gas path which bypasses the low level sensor 32 when the concentration of the gas detected by the sensor 14 is above a predetermined value. When the sensed value falls below that value, valves 16, 24 are operated to pass gas through the low level sensor which provides an accurate measurement of the low gas levels. A delay volume 34 smooths the gas flow to the low level sensor. The valves may be returned to their original positions if the low level sensor detects a gas concentration above a second predetermined value.
Patent GB-2319735-A (GB)
Title: Separator with baffle
Inventor: CHAMBERLAIN NEVILLE PAUL
IPC: B01D19/00
Filed: 1997-12-01
Abstract: A separator, typically a two or three phase type with an inlet 4 and outlets 8, 9, 12 for separated components is characterised by a baffle(s) 13, 14 for controlling fluid flow in it's tank 2. The baffle(s) has a different proportion of free area in a zone near the tank bottom than in a zone higher in the baffle. The free area may be provided by perforations in the baffle(s). A mixture of aqueous liquid, liquid hydrocarbon and gas can be separated.
Patent GB-2318468-A (GB)
Title: Multivibrator circuit
Inventor: TCHAMOV NIKOLAY
IPC: H03K3/282
Filed: 1997-05-07
Abstract: The invention relates to an emitter-coupled multivibrator circuit. The circuit comprises two transistors (Q1, Q2), between which is provided a positive feedback by connecting each transistor base via buffer transistors (Q3, Q4) to a collector of the other transistor. In the multivibrator of the invention, the transistors (Q1, Q2, Q3, Q4) are connected to operating voltages via coils (L1, L2, L3, L4, L5, L6) instead of using conventional resistors and current sources. This lowers the necessary operating voltage, since no DC voltage loss is provided across the coils. Additionally, this improvement increases amplification during the avalanche process and thus the speed of the whole circuit. Further at high frequencies, the wave form of a signal is closer to sinusoidal form. The speed of the circuit can be increased additionally by providing an electromagnetic coupling between the coils (L1, L2, L3, L4, L5, L6).
Patent GB-2335713-A (GB)
Title: Air bearings and their use in hybrid charger
Inventor: WU XUEFENG
IPC: F16C33/10
Filed: 1998-03-27
Abstract: A novel air bearing is suitable for a hybrid charger driven by a high temperature exhaust gas of an engine. The air-bearing is influenced by the high temperature, so that the radial clearance between a shaft (19) and a bush (28) of the air bearing varies in use as a result of the thermal expansion of the shaft and/or other thermal phenomena. The air bearing of the invention comprises a combination of shallower grooves (22,24) and deeper grooves (23,25). The shallower grooves (22,24) satisfy the required stiffness over a range of relative small radial clearances. The deeper grooves satisfy the required stiffness over a range of larger radial clearances. The hybrid charger (figure 1, not shown) includes a turbine section 11, a bearing section 12, a permanent-magnet motor-generator section 13 and a compressor section 14. In a hybrid vehicle, the charger may receive exhaust gas from, and supply compressed air to, an internal combustion-engine. In a fuel cell powered vehicle, the charge may receive exhaust gas from, and supply compressed air to, the fuel cell.
Patent GB-2336867-A (GB)
Title: Deformable speed hump
Inventor: KAMIENCHICK YEHUDA
IPC: E01F9/529
Filed: 1998-04-28
Abstract: A speed restriction device comprising an elongate hollow element (1) of a predetermined length, having an impervious casing (2) consisting of at least one upper surface presenting a hump (3). The upper surface of the casing is elastic and resilient, and on a side wall (4) of the casing, at least one vent (5) is provided to allow a flow of air out of the casing at a predetermined rate. The size of the vent may be adjustable to enable the device to be set for different speed limits. The casing is also provided with means to allow a flow of air back into the casing. The device imposes a speed restriction on vehicles travelling over the allowed speed limit, but minimises the inconvenience for vehicles travelling within the speed limit.
Patent GB-2325836-A (GB)
Title: Ray transform method for performing 3D spacial volume transformation for perspective view rendering of a volume data set on a 2D graphics display
Inventor: NAQVI HASAN SHAHZAD
IPC: G06T15/40
Filed: 1998-05-12
Abstract: A ray transform method for performing 3D spacial volume transformation for perspective view rendering of a volume data set (604) on a 2D graphics display (110). A backward mapping approach is used whereby each destination point along a ray (814) is transformed and resampled from the source. Each ray (814) has a unique ray transform matrix which is combined with an orthographic model view matrix to yield a combined inverse matrix. The floating point values of the combined inverse matrix are coded into a 32 bit fixed point format having 16 bits of scalar and 16 bits of fraction. Once this coding has been done, then transforming consecutive points along a destination ray becomes simple integer adds. The method supports two resampling techniques, nearest neighbor (FIG. 4) and trilinear interpolation (FIG. 5).
Patent GB-2337520-A (GB)
Title: Retroviral delivery system
Inventor: KINGSMAN ALAN JOHN
IPC: C12N7/04
Filed: 1998-05-22
Abstract: A retroviral delivery system capable of transducing a target site is described. The retroviral delivery system comprises a first nucleotide sequence coding for at least a part of an envelope protein; and one or more other nucleotide sequences derivable from a retrovirus that ensure transduction of the target site by the retroviral delivery system; wherein the first nucleotide sequence is heterologous with respect to at least one of the other nucleotide sequences; and wherein the first nucleotide sequence codes for at least a part of a rabies G protein or a mutant, variant, derivative or fragment thereof that is capable of recognising the target site. The retrovirus may be HIV-1, EIAV or MLV. The retroviral delivery system may be used in the manufacture of medicaments for disorders requiring gene therapy. A method of contacting a target cell with the delivery system, and transduced cells resulting from the method are also claimed.
Patent GB-2342193-A (GB)
Title: Addition circuitry for calculating a sum and the sum plus one
Inventor: KNOWLES SIMON
IPC: G06F7/50
Filed: 1998-06-19
Abstract: Circuitry for adding a first binary number (A) having a plurality of bits (a<SB>0</SB>, a<SB>1</SB>, ...) to a second binary number (B) having a plurality of bits (b<SB>0</SB>, b<SB>1</SB>, ...) to produce a third binary number (A+B) having a plurality of bits (s<SB>0</SB>, s<SB>1</SB>, ...) and/or a fourth binary number (A+B+1) having a plurality of bits (s<SB>0</SB>', s<SB>1</SB>, ...) and corresponding to the addition of the third binary number and one, comprises:<BR> ```a plurality of stages wherein each stage has a first input for receiving a bit (a<SB>i</SB>) of the first binary number (A), a second input for receiving a bit (b<SB>i</SB>) of the second binary number (B) having the same binary weight (i) as the bit received at the first input and output means for producing a bit (s<SB>i</SB>) of the third binary number (A+B) and/or a bit (s'<SB>i</SB>) of the fourth binary number (A+B+1), wherein said output means comprises Exclusive OR means for combining a first signal and a second signal to produce a bit of the third binary number and the first signal and a third signal to produce a bit of the fourth binary number wherein said third signal is equivalent to said second signal if both the bits received at the first and second inputs have a LOW logic value, or for any stage having a lower binary weight, both the bits received at the first and second inputs have a LOW logic value and is otherwise equivalent to a predetermined logic value.
Patent GB-2327143-A (GB)
Title: Uni-bipotential symmetrical beam in-line electron gun
Inventor: GORSKI RICHARD M
IPC: H01J29/50
Filed: 1998-07-07
Abstract: A Uni-Bipotential in-line electron gun for a color cathode ray tube includes a prefocus lens (11) having specially shaped G4 electrode for compensating the gun for comatic distortion. In the G4 electrode, the three apertures (20, 22, 24, fig 4) are oblong in shape with semicircular end portions, with the two outer apertures (20, 24) being horizontally displaced from the beam axis to inwardly displace the blue and red electron beams so that they substantially fall on the respective optical axes of symmetry of the main lens (13).
Patent GB-2339784-A (GB)
Title: Plastics film; identifying goods
Inventor: LONGDON TONY
IPC: B65D55/02
Filed: 1998-07-21
Abstract: A dyestuff capable of undergoing a clearly visible colour change when contacted with a color-developing material is dispersed in the body of a plastics film and used in the identification of goods. The film can be used for packaging of the goods or as a label or seal affixed to the goods. When testing the authenticity of packaging goods, the plastics film is marked with the color-developing chemical to produce a colored mark on the package. The dyestuff is preferably a latent dyestuff which is colorless and invisible to the eye under ambient conditions for use of the film but which forms a clearly visible color when contacted with the color-developing material.
Patent GB-2331558-A (GB)
Title: A fuel injector with valve in actuation fluid supply branch passage
Inventor: PATTANAIK SATTISH
IPC: F02M57/02
Filed: 1998-10-07
Abstract: A hydraulically actuated fuel injection system (figure 1), for use with an internal combustion engine, comprises a pressurized actuation fluid manifold, a plurality of hydraulically actuated fuel injectors 14 each having an actuation fluid cavity 20, a plurality of branch passages 21 connecting the fluid cavity 20 of each injector 14 to the manifold and a flow orifice valve 90 positioned in each branch passage 21; the valve 90 having a variable cross-section for providing a throttling effect on the actuation fluid thus reducing the effects of pressure waves in the fluid which is experienced by the injector 14 and stabilising the engine operation at idle conditions, reducing noise and NO x  emissions. The valve 90 comprises a valve member movable between a first position that presents a relatively small flow area through the branch passage and a second position which presents a relatively large flow area and a compression spring 92 to bias the valve member toward the first position (figures 3a, 3b).
Patent GB-2330659-A (GB)
Title: Sodium leakage detection apparatus
Inventor: OHYAMA NOBUMI
IPC: G01K13/02
Filed: 1998-10-19
Abstract: The invention is concerned with a multiple-sheathed sodium leakage detection apparatus capable of detecting leakage of sodium due to a breakage of a well for temperature measurement at an early stage of the leakage. The apparatus is a combination of a multiple-sheathed sodium leakage detector having a sheathed thermocouple 10 and sodium leakage detection element wires 11,12, which are disposed in an insulating material within a sheath 9; a sodium leakage judgment device 40 which judges whether or not there is a leakage of sodium by a signal from the multiple-sheathed sodium leakage detector; an alarm device 50 which gives an alarm when it is judged that there is a leakage of sodium; and signal lines which connect these devices. The multiple-sheathed sodium leakage detector is designed in conformity to the sheath outer diameter so that it can be inserted into a well 2 which has already been installed on an existing piping without changing the well.
Patent GB-989719-A (GB)
Abstract: 989,719. Moulding machines. MALCUS HOLMQUIST A.B. April 10, 1964 [May 14, 1963], No. 14977/64. Heading B3F. A device for compacting sand in mould flasks comprises a press-head 13 having a closed hydraulic system in the form of a container 14 with vertical cylinders 16 each housing a piston 18. Piston-rods 19 project from each cylinder and have pressplates 20 secured to their lower ends. The pistons are maintained in a mean position in the cylinders when inoperative by coil springs 22. When the flask is brought up to the press head the sand is compressed as shown in Fig. 2 by the uniform hydraulic pressure generated in the system. Local areas of increased pressure on the sand may be effected by using some press plates or pistons of a smaller area which results in a higher compression of the sand in these areas. Further, throttling means may be provided between the cylinders 16 to ensure steady movement of the pistons and a further working cylinder may be connected to the hydraulic system to facilitate additional compacting of the sand.
Patent GB-2347452-A (GB)
Title: Sheet pile driver
Inventor: HORSFALL ALAN PAUL
IPC: E02D7/18
Filed: 1999-02-04
Abstract: A sheet pile driver assembly comprises a top plate 10 for receiving the driving means e.g vibratory hammer, and adjustable 'gripper' arms 12, 12a extending downwards. Arms 12 and 12a grip the sheet pile 14 and are driven into the ground with the said pile 14, providing support and guidance. On setting the pile to the required depth the gripper arms 12 and 12a are released and the assembly raised leaving the pile 14 in place. The arms 12 and 12a may be profiled to match the profile of the pile 14.
Patent GB-2333425-A (GB)
Title: Mobile station communication network
Inventor: VALENTINE ERIC L
IPC: H04B7/185
Filed: 1997-09-16
Abstract: A mobile station communication network includes a high penetration network which schedules high transmission power level paging to reach a mobile station for which an acknowledgment signal is not received. A home location register stores mobile station high penetration network (HPN) subscriber feature information. The HPN analyzes mobile station class to determine an appropriate response when a mobile station fails to acknowledge a page request. The HPN further maintains a record of short message service (SMS) time out (timer) values and examines the ID of the center that generated the message to determine when the SMS center will time out. Just prior to the time out, the HPN will send a "user unavailable" signal to the originating SMS center to avoid unnecessary paging request retries by the SMS center.
Patent GB-2348548-A (GB)
Title: Cooling passages in electical machine
Inventor: READ DONALD R
IPC: H02K9/19
Filed: 1999-04-01
Abstract: An electric motor or generator (10) comprises a housing (12) which is substantially cup-shaped and having an end wall (26) and an annular outer wall (28), a fluid flow passage (30) being formed through the end wall, and a fluid flow passage (32) being formed through the outer wall; an inlet (34) connecting with one (30) of the flow passages; an outlet (36) connecting with the other (32) of the flow passages. The flow passage (32) in the outer wall (28) comprises a first passage (46) and a second passage (48), the first passage and the second passage extending circumferentially through the outer wall and being separated, in the longitudinal direction, for a portion of their circumferential length, by, an undulating member (44) formed internally in the outer wall; and wherein the flow passage (30) in the end wall, the first passage (46), and the second passage (48) are integrally formed in the end wall (26) and the outer wall (28) and are sequentially connected to define a flow path through the housing (12) between the inlet and the outlet.
Patent GB-2336897-A (GB)
Title: Panel radiator with concealed valves and pipework
Inventor: SHEENAN STEPHEN PIUS
IPC: F24H9/12
Filed: 1999-04-27
Abstract: A panel radiator (10) with concealed valves and pipework comprises a hollow panel (11), an inlet header (12) and an outlet header mounted on the hollow panel (11). The headers have sections (17) extending beyond a side of the hollow panel. An inlet valve (15) and an outlet valve are mounted on the extended sections of the inlet and outlet headers. A thermostatic valve head (20), which is separate from and connected by hydraulic means to the inlet valve (15) is provided. The radiator is connectable on-site to a circuit without any additional pipework to the rear of the hollow panel. The valves are concealed in use by a false floor 52.
Patent GB-2349971-A (GB)
Title: Intruder detection system
Inventor: LEIVERS CRAIG
IPC: G08B25/14
Filed: 1999-05-10
Abstract: To obtain NACOSS approval, an intruder detection system must pass various stringent tests. For example, the voltage and current of the signal generated by an intruder detection device must fall within specific criteria so as to be interpreted correctly by an interface panel. The use of conventional relays interferes with the correct operational voltages and currents, which can lead to a failure to obtain NACOSS approval and may also lead to an incorrect interpretation of the signals by the interface panel. Accordingly, the present invention provides an intruder detection system comprising an intruder detection device 104, at least one interface panel 102 for controlling the operation of the intruder detection and for monitoring receiving signals from the intruder detection device and at least one relay board 112 (Fig.2) comprising means operable in response to the signals from the intruder detection device to produce at least one output signal via a relay without interfering with the signals between the intruder detection device and the interface panel. As described, the relay board comprises a differential amplifier (206) having a very high input impedance, a rectifier (212), a comparator (214) and a relay (216).
Patent GB-2352222-A (GB)
Title: A hoop with clips for holding open a bag
Inventor: HARVEY PETER KEVIN
IPC: B65B67/12
Filed: 1999-07-22
Abstract: A hoop 2 has a plurality of clips 4 for engaging the mouth of a bag held open thereby, in particular a plastic bag for rubbish. The hoop preferably presents a convex curved surface to the bag, such as a circular cross section. The hoop can be hollow and is preferably circular, but can be oval or elliptical. The clips can be independent or joined to the hoop, and are preferably spaced equidistant around the hoop. The clips are shaped and spring-biased to conform to the convex surface of the hoop, they also have a lip (10 Figure 3) that aids fixing the bag in position. The hoop and/or clips can optionally have a high friction surface e.g. roughened or an elastomeric surface, to improve grip on the bag.
Patent GB-2342300-A (GB)
Title: Puppets or character representations comprising at least two coaxial tubes
Inventor: COATES ANDREW STEPHEN
IPC: A63H3/36
Filed: 1999-09-13
Abstract: A puppet 10 or other character representation includes an inner tube 12 having a representation or representations of a facial feature or features, e.g. eyes or ears, and an outer tube 11 having one or more openings corresponding the feature or features. Movement of the inner tube within the outer tube simulates movement of the feature or features. The upper ends of the inner and outer tubes may be connected by a sleeve 23 of simulation hair which also moves on movement of the inner tube. The puppet or representation may feature an extra tube 13 which effects the movement of a simulation lower jaw when moved relative to the outer tube. A moulding (16) having appropriate facial characteristics may be secured to the outer tube.