baber/WOPTO huggingface dataset:
Patent GB-2453036-A (GB)
Title: Wide range variable gain CMOS amplifier circuit providing dB-linear gain control
Inventor: KIM HONG BONG
IPC: H03G1/00
Filed: 2008-09-16
Abstract: Disclosed is a variable gain amplifier having wide bandwidth and wide gain variation according to a predetermined exponential function. The amplifier includes a differential amplification section 120 and a gain adjustment section 110. The gain adjustment section generates an approximation to an exponential function (equation 4), allowing gain of an MOS amplifier to be linearly adjusted on a decibel scale. A linear range of 65dB or more can be achieved. Also disclosed is an input stage of the differential amplification section, the input stage having an active inductive load (121, fig.7). The circuit provides the variable gain amplifier with increased bandwidth.
Patent GB-2464101-A (GB)
Title: A dynamic thermodynamic resolution process for amines using an iridium catalyst
Inventor: BLACKER ANDREW JOHN
IPC: C07B55/00
Filed: 2008-10-01
Abstract: The present invention is concerned with a process for the racemisation and recovery of optically active amines. After separation of the desired isomer from an isomer mixture, the remaining isomers may be recycled by racemisation and further amounts of the desired isomer then subsequently recovered. The present invention thus provides a process for racemising and recovering such isomers of primary, secondary and tertiary amines and to certain compounds which are produced in the process. The present invention also relates to a dynatnic thermodynamic resolution process for a primary, secondary or tertiary amine, such as sertraline. Racemisation is accomplished by the use of an iridium catalyst IrX2Cp, where X is dhloro, bromo or iodo and Cp is an optionally substituted cyclopentadienyl group. The catalyst can be recovered by passing NH3through the solution, which forms a solid IrX2Cp-NH3-complex.
Patent GB-2455865-A (GB)
Title: I.c. engine fuel rail assembly including a fuel separation membrane
Inventor: PURSIFULL ROSS DYKSTRA
IPC: F02D41/00
Filed: 2008-12-08
Abstract: A fuel rail assembly for supplying pressurized fuel to a plurality of cylinders of an engine includes a fuel rail housing 132 defining an internal fuel rail volume having at least a first region 133 and a second region 135 segregated by a fuel separation membrane element 134 disposed within the fuel rail housing 132. The membrane element can be configured to pass a first component of a fuel mixture such as an alcohol through the membrane element from the first region to the second region at a higher rate than a second component of the fuel mixture such as a hydrocarbon. The separated alcohol and hydrocarbon components can be provided to the engine in varying relative amounts based on operating conditions. A fuel mixture, eg of hydrocarbon (eg gasoline or diesel) and alcohol (eg ethanol or methanol) components, may be pumped from tank 120 to a fuel rail 130 which has a tubular fuel separation element 134 defining a region 135 separate from the outer fuel receiving region 133. The fuel separation element may be a selectively permeable membrane 134 permitting passage of the alcohol component, eg by pervaporation. The membrane may have a coating of polymer material or porous ceramic material, eg zirconia. The permeant vapour may be condensed for delivery via a separate fuel rail 160 or may be delivered as vapour to the intake manifold.
Patent GB-2466043-A (GB)
Title: Clothes hanger
Inventor: WHEATER WALTER
IPC: A47G25/36
Filed: 2008-12-09
Abstract: A clothes hanger includes a hanger 14 and a clothes support comprising a front 22 and back 24 connected together at an upper region. The support preferably comprises a blank with the front 22 and back 24 and folded at 26 to bring the top edges towards each other. Flaps at each top edge are folded at three folds 32, 34, 36 to trap a flap between the front and back portions for adhering to the back portion. Fold 34 defines the main support and is slit (40, Figure 3) and terminates in an edge 20 to retain clothes. The blank includes flap 42 which is passed through an opening (48, Figure 4) in hanger 14, is folded at 44 back on itself and glued (50). A user can place thumbs in a gap 52 to prise the sides away from each other and separate flap 42 to remove hanger 14 for recycling. Part of the support may be removed for lightening by providing a weakened line 54. A tag (56, Figure 5) comprises a narrow portion located in a hole (58) in the hanger, and extensions located between the front and back sides to retain it in position.
Patent GB-2456043-A (GB)
Title: Harmonic Suppression Resonator wherein the amount of electrical coupling and amount of magnetical coupling of the adjoining resonators are substantially equal
Inventor: IIO KEN ICHI
IPC: H01P1/20
Filed: 2008-12-22
Abstract: A harmonic suppression resonator comprises a plurality of waveguide resonators that resonate in TE mode, in which harmonic suppression resonator, adjoining resonators are coupled via a plurality of coupling windows. Four coupling windows 33bc1 , 33bc2, 33bc3 and 33bc4 are provided between a resonant region 51b and a resonant region adjoining the resonant region 51b. These coupling windows allow fundamental wave modes of the adjoining resonators to be coupled mainly by magnetically coupling. The coupling windows 33bc3 and 33bc4 allow second harmonic modes of the adjoining resonators to be electrically coupled, and the coupling windows 33bc1 and 33bc2 allow the second harmonic modes of the adjoining resonators to be magnetically coupled. By causing the amount of the electrically coupling and the amount of the magnetically coupling to be substantially equal, the coupling of the second harmonic modes is negated, whereby propagation of the second harmonic is blocked. Embodiments of the invention include a harmonic propagation blocking filter comprising the harmonic suppression resonator as above, and a radar apparatus comprising the harmonic propagation blocking filter.
Patent GB-2456659-A (GB)
Title: High structural strength sandwich panel
Inventor: SMYTH MATTHEW
IPC: E04C2/36
Filed: 2008-01-22
Abstract: High structural strength sandwich panel 12 comprising a prefabricated core, which consists of a lattice 2 filled with a filler 7, and skins 9 bonded to the core. The lattice may be a one-piece grating or a plurality of crisscrossed strips, both being rigid and made from fibre reinforced polymers. The filler may comprise polymeric foam or an aerated cement based product. A method of applying the skins is also claimed which may comprise the steps of covering each face with a prepared wet resin and pressing fibre reinforcements into the wet resin to achieve full impregnation. The wet resin may be epoxy, polyester, phenolic, vinyl ester, acrylic or other suitable polymeric resins. The fibre reinforcement may be glass, carbon, polymer and may take the form of chopped strands, woven roving, multi-axial or similar mats.
Patent GB-2457353-A (GB)
Title: Hydraulic tensioner with oil chamber volume reducing bar pre-assembled with spring
Inventor: KUREMATSU YUJI
IPC: F16H7/08
Filed: 2009-01-12
Abstract: A hydraulic tensioner comprises an oil chamber volume reducing bar 150 which is located within a high pressure oil chamber R and surrounded by a coil spring 130 that urges a plunger 120 to slide in and protrude from a plunger-accommodating hole 111. The coil spring 130 is formed so that it ends are bent inwardly which provides windings of the spring 130 with a diameter (A, fig 2a) that is slightly less than an outer diameter (F) of the bar 150, consequently bar 150 and spring 130 can be installed as a pre-assembled unit, and dropping of the bar 150 out of the spring 130 can be avoided. So as not to obstruct flow of oil through a circular array of oil passages (145, fig 3) in check valve retainer 143, ends of the bar 150 have a diameter (B) which is smaller than a diameter (G) of a circle inscribed in, and tangent to, the circular array of oil passages (145).
Patent GB-2453474-A (GB)
Title: Swellable downhole centraliser
Inventor: NUTLEY BRIAN
IPC: E21B17/10
Filed: 2007-05-31
Abstract: A centraliser 120 for a downhole tubular 124 comprises a body 122 and a plurality of formations 126 upstanding from the body, at least part of the centraliser comprising a swellable material selected to expand on exposure to at least one predetermined fluid. The formations may comprise a swellable material selected to expand on exposure to hydrocarbon fluid. The formations may be arranged to create turbulent flow for fluid passing the apparatus, maybe blades and may be helically oriented on the body.
Patent GB-2467789-A (GB)
Title: Portable concrete or cement mixer
Inventor: BROWN LESLIE FREDERICK
IPC: B01F7/02
Filed: 2009-02-17
Abstract: A portable mixer for mixing concrete, cement, and like materials consists of a circular non rotating mixing container 1 which inclined at an angle to the vertical. A lid 2 for the container 1 is secured by one or more clamping means 3, and includes a motor 9 and transmission 10 mounted within the lid 2 to secure and drive a mixing paddle 8 within the container 1. The axis of the paddle 8 is coincident with the cylindrical axis of the container 1. Two legs 4, 5 are fitted to the lid and located such that their contacts with the ground and that of the container provide a stable three point seating on the ground. Preferably the mixer has no external moving parts to present a safety hazard. The mixer lid 2 may be fitted with a removable membrane between the lid 2 and the container 1 to aid cleaning. Preferably the container 1 takes the form of a bucket. The legs 4, 5 may be removable to reduce overall volume for storage.
Patent GB-2463560-A (GB)
Title: A tennis game scorekeeping system and method
Inventor: HARTMANN LYNNE A
IPC: A63B71/06
Filed: 2009-09-07
Abstract: A tennis scoring system comprising first and second shafts 116 and attached loops 300 is disclosed. In a first aspect, at least two loops are attached to each shaft. In a second aspect, at least one loop is attached to each shaft and both shafts are substantially uniform in cross-section along their lengths. A method is also disclosed for moving eight loops 310, 320, 330, 350, 360, 370, 390, 395 between first and second positions on the two shafts to record points scored by two players participating in a game of tennis. A third position may be provided on each shaft and may be used in addition to the first and second positions to record points scored during a tie break. The shafts may comprise the two branches at the throat 114 of a tennis racquet 100. The loops, which are preferably made of an elastic material, may be of different colours.
Patent GB-2467997-A (GB)
Title: Nail file
Inventor: WILSON ABRAHAM
IPC: A45D29/04
Filed: 2009-11-11
Abstract: A nail file for abrading a finger or toe nail is disclosed. The nail file comprises: a main body with an inner edge defining an elongate slot through an entire depth of the main body; and a pair of substantially abrasive surfaces. Said surfaces are arranged to oppose each other across the width of the elongate slot such that a user can abut a finger or toe nail against both abrasive surfaces and abrade the nail by relative movement of the nail and the abrasive surfaces. A method of using the nail file is also disclosed.
Patent GB-847425-A (GB)
Title: Structural member for conducting a magnetic flux
IPC: H02K3/48
Filed: 1958-03-28
Abstract: 847,425. Slot-wedges for dynamo-electric machines. ELEKTRO-MOTOREN A.G. March 28, 1958 [April 8, 1957], No. 10059/58. Class 35. Magnetic slot wedges are made of sheets of soft iron with variously shaped apertures 4 leaving oblique bridges 8 which cause the wedges to expand and grip the slot walls, as shown at the right-hand part of Fig. 1, when distorted by opposite axial pressure 9 applied at different parts of the wedge. In a modification, Fig. 3, two rows of apertures 12 are employed and the centre piece 11 and the outer edges 14 are mutually displaced in opposite directions by forces 13. The slot wedges may engage in various forms of notches in the slot walls. The wedges may be provided with variously shaped end lugs 37 for clamping the lamination stacks, e.g. as shown in Fig. 15. In this case the slot notches may be dispensed with and ears 35, 36 at the ends of the stack used to locate the wedge. The wedges may be insulated by phosphate or oxide or a cataphoretically applied insulating layer.
Patent GB-1379368-A (GB)
Title: Gas turbine engine having apparatus for the admission and condi tioning of fuel/air constituents
IPC: F02C3/14
Filed: 1973-03-01
Abstract: 1379368 Gas turbine engine combustion equipment MOTOREN-UND TURBINENUNION MUNCHEN GmbH 1 March 1973 [1 March 1972] 10098/73 Headings F1G and F1L The invention relates to a gas turbine engine and particularly to the manner in which air and fuel are delivered into the combustion chamber. The engine shown comprises an axial-flow compressor 5 and a turbine 15 mounted on a common shaft 7 supported in bearings 13 and 21, an annular combustion system 3 being disposed in a chamber 22 defined between a wall 12 at the downstream end of the compressor, the turbine rotor 15 and the shaft 7. The annular combustion chamber is defined by walls 16 which extend generally radially and then axially to an outlet portion 17. The upstream end of the combustion chamber is formed by walls 30. A wall 26 which is integral with the shaft 7 is disposed adjacent the walls 30, the wall being shaped to form a recess 25 to which fuel is supplied through inlet duct 23, 24 and from which it is discharged under centrifugal action through openings 27 in the wall 26. An annular fuel and air distributor is disposed within the combustion chamber, the distributor being of T-section in longitudinal section, comprising a radially-extending portion 28, oppositely axiallydirected portions which terminate in radially inwardly directed outlets 31, 32 so that air/fuel mixture flows first radially outwardly, then in opposite axial directions, then discharging radially inwardly to form toroidal vortices as indicated at W. Further air is admitted through inlets 33, 34 and is deflected by guides 35, 36 to assist the toroidal vortices. Further air is admitted through inlets 37 and develops further toroidal vortices as indicated at Z. In a second embodiment, the engine comprises a centrifugal-type air compressor in place of the axial-flow compressor of Fig. 1. In Fig. 3 a centrifugal air compressor is again utilized, and the turbine inlet guide vanes 60 are hollow to permit flow of air therethrough to the space 22. Air flowing radially into the combustion chamber through inlets 46, 47 impinges directly on the air/ fuel mixture flowing radially inwardly through the inlets 48, 49.
Patent GB-554109-A (GB)
Title: Improvements in or relating to sheet conveying apparatus
IPC: B65H29/10
Filed: 1942-07-20
Abstract: 554,109. Sheet delivery apparatus : feeding sheets. STEVENS, A. H. (Miller Printing Machinery Co.). July 20, 1942, No. 10106. [Class 100 (i)] A sheet feeding or delivery apparatus which is descibed in connection with a drop sheet delivery device is constructed with a reciprocating carrier 7 in which is mounted a shaft 8 fitted with a series of plain rollers 10 and rollers 9 over which pass tapes 14 which are stationary as the carrier moves from right to left. The shaft 8 is driven by a rack and pinion and a one-way clutch, and is moved counter clockwise as the carrier returns towards the right to withdraw the support of the sheets and permit them to fall onto a delivery table. The tapes thus do not move relatively to the sheets as the carrier withdraws. The sheets are moved positively on to the tapes 14 by a faster conveyor and positioned and held in registered position by oscillating members 18 secured to a shaft 17 and fitted with adjustable springy holding members 27 which co-act with registering devices 25 also mounted on the members 18. The devices 25 are offset from the rollers 10 and engage the front edges of the sheets when these have passed under the feet 28 of the holding members 27 which press the sheets against the rollers 10. The shaft 17 is oscillated to raise the members 18 as the carrier 7 returns and the sheets then drop into position.
Patent GB-1332693-A (GB)
Title: Photographic process
IPC: G03C5/40
Filed: 1971-04-20
Abstract: 1332693 Photographic processing apparatus; vesicular processes AGFA-GEVAERT A G 20 April 1971 [30 April 1970] 10128/71 Headings G2A and G2C The density of a photographic image is increased by passage of the image carrying material continuously through apparatus comprising an applicator roller for applying liquid containing peroxide to the material and a heating zone 2. The heating zone may be followed by an immersion zone 4 for applying the reaction components of a colour forming oxidation reaction and by another applicator 5 for re-applying the peroxidic solution. A final immersion zone 6 of an aqueous soda solution is provided. In a specific example, the composition of immersion bath 4 is 800 ml water, 200 ml ethanol, 100 g. pyrocatechol, and 40 g. of 4-amino-N-[#-methanesulphamidoethyl]-m-toluidine sesquisulphate monohydrate adjusted to pH 10 with caustic soda.
Patent GB-1119112-A (GB)
Title: Saline solution, particularly for haematology
IPC: G01N33/86
Filed: 1966-03-08
Abstract: A hypertonic saline solution for diluting blood prior to coagulation tests comprises Na+, K+ and Mg+ + in amounts 5-15 times their normal average concentration in blood, and anions which are not capable of precipitating Ca+ +, the solution having a pH of 6.8-8.  In the preferred solution, NaCl, KCl, HCl, veronal sodium, sodium acetate and MgSO4 are present.  Such solutions may be made up with twice distilled water and measured quantities sealed in neutral glass ampoules.  A method of determining coagulation time with thromboplastin is described.
Patent GB-265816-A (GB)
Title: A screwdriver
IPC: B25F1/04
Filed: 1926-04-17
Abstract: 265,816. Blanchet, C. A., (Gertsch et Cie). April 17, 1926. Screwdrivers.-Four different sizes of screwdriver blades are provided by a pair of two-ended blades e pivoted one on each end of a stem a which is reversibly secured in a handle b with the help of a spring g. A sliding ring f holds either end of a blade rigidly in the bifurcated end of the stem.
Patent GB-417660-A (GB)
Title: Improvements in or relating to the impregnation of textile materials
IPC: D06M15/693
Filed: 1933-04-05
Abstract: Unwoven textile materials in the form of laps, slivers slubbings, rovings, yarns or threads or in the form of laid thread or cord assemblies or mineral fibres such as asbestos or slag wool are impregnated with rubber by introducing vulcanized latex into the material under pressure.  The material may be subjected to a vacuum before the latex is applied, and the vacuum treatment may be alternated with pressure a number of times.  The fibrous material may be first coated with a layer of unvulcanized rubber which may be coagulated before the application of the vulcanized latex, which latter may be applied in stages, the successive layers having different properties.  Stabilizing and/or wetting agents such as soaps, casein, sulphonated alcohol or a cholate may be added.  A small amount of unvulcanized latex may be admixed with the vulcanized latex.  The vulcanized latex is preferably prepared by the methods described in Specifications 193,451, 208,235, and 266,418, [all in Class 70], and the impregnation is carried out by the methods described for unvulcanized latex in Specifications 405,311, 405,313, and 413,299, [Group IV]. Specifications 210,526, 295,387, 309,391, [all in Class 70], and 344,414, [Group IX], also are referred to.
Patent GB-678790-A (GB)
Title: Improvements in or relating to folding bedsteads enclosed in a cupboard structure
IPC: A47C17/165
Filed: 1951-05-02
Abstract: 678,790. Bedsteads; furniture combinations. POLLOPAS PATENTS, Ltd., and ULLRICH, W. May 2, 1951. No. 10288/51. Classes 52 (ii) and 52 (iii). In a folding bedstead and enclosing cupboard structure having two easy chairs arranged in front with a table standing therebetween the bedstead 12 is pivoted by bearing strips 13, 14 to the cupboard and to the backs 4, 5 of the chairs and to the edge of the intervening table, the chair seats 2 and arm rests 3 being also connected to the cupboard structure 1 by pivoted links 6. When the bedstead 12 is tilted down to operative position, the chairs and table are moved forwardly during the tilting, and the bedstead then being supported on the chairs and table. In addition, the chairs are at the rear linked to the cupboard structure so that when the bedstead is in folded position i.e. in the cupboard the chairs may be angularly disposed with respect to the table between them.
Patent GB-569508-A (GB)
Title: Endless track for vehicles
IPC: B62D55/205
Filed: 1943-06-25
Abstract: 569,508. Vehicle endless tracks. FOOT, E. H. W. June 25, 1943. No. 10291. [Class 79 (i)] [Also in Group XXVI] In an endless track for vehicles comprising mutually hinged track plates, each hinge pin 4 floats in an oil bath provided by two gland packing chambers at the extremities of a central sleeve 3 surrounding the pin, each chamber being sealed by a bush cap 7 having a recess 8 at one end, filled with oil, to house the adjacent end of the pin 4. and a recess at the other end forming a housing for a spring 10 which urges the cap into engagement with the gland packing 11. As shown, the sleeve 3 passes through lugs 2, 5 on adjacent track plates. The spring 10 is held in place by a bolt 12 extending through slots 13 in the cap 7 to prevent rotation while permitting axial movement of the cap. The pin 4 has an external longitudinal groove 15 leading From an annular recess 14 and a passage 17 connecting a central longitudinal passage 16 with the groove 15, while a bolt 18, screwed into the sleeve 3, enters the recess 14 to permit injection of oil into the chamber 8. As the packing 11 wears down, the cap 7 is urged inwardly and the gradual inward movement of the end of the cap indicates the degree of wear of the packing.
Patent GB-918659-A (GB)
Title: Electrical apparatus for controlling the duration of opening of a shutter
IPC: H01J17/04
Filed: 1960-03-23
Abstract: 918,659. Electric control of shutters. REICHERT OPTISCHE WERKE A.G., C. March 23, 1960 [March 24, 1959], No. 10307/60. Class 98 (1). Electrical apparatus for controlling the duration of opening of a shutter, includes at least one electromagnet and one armature connected to plates of the shutter, the electromagnet coil or coils being connected in two current circuits of which a first is arranged to pass a relatively high current for pulling-on the armature and the second to pass a relatively low current for holding the armature, and a gasfilled valve, with a control grid, operable to switch current in said second circuit from said coil or coils. As shown, shutter blades 8 carried by spindles 10 in soft iron cores 2 and normally held closed by springs 7 are opened by movement of armatures 5, also carried by spindles 10, upon energization of electromagnet coils 3. These coils are connected in parallel to a control circuit as shown, which is in turn connected by switch 11 to a D.C. source (not shown). On closing switch 14, a condenser 12 discharges through coils 3 and " pulls-on " the armatures 5. A steady current through switch 14, coils 3, and resistances 13, 13a then holds the blades 8 in their open positions. Simultaneously with the opening of switch 14, switch 15 is arranged to be changed-over for charging of a second condenser 18 by way of an adjustable resistance 17. Eventually, after a variable time determined by resistance 17, a gas-filled valve 20 fires, coils 3 are short-circuited and blades 8 close. To prevent premature closing of blades 8 on opening of switch 14 prior to the firing of valve 20, a relay (Fig. 2, not shown) may be included in series with coils 3 for operating holding switches. Preferably the centre of gravities of the connected plates and armatures lie on the respective spindles 10.