baber/WOPTO huggingface dataset:
Patent GB-1276682-A (GB)
Title: Semiconductor device and its manufacturing method
IPC: H01L23/057
Filed: 1969-09-08
Abstract: 1276682 Semi-conductor devices HITACHI Ltd 8 Sept 1969 [11 Sept 1968] 44372/69 Heading H1K. Cooling of a planar semi-conductor device chip face bonded to a conductive pattern on an insulating or insulation-coated substrate is facilitated by fixing a plate of larger superficial area than the chip to the exposed face of the chip via an intermediate member having a thermal conductivity superior to that of air. In the example illustrated in Fig. 1 the plate 3 is spaced from the ceramic substrate 4 by ceramic frame 2 soldered between it and the recessed base 1 to which the substrate is soldered. Typically the chips each include a transistor or a combination thereof with diodes, resistors, and capacitors and further film resistors or capacitors may be disposed on the substrate. The intermediate members are copper balls (or discs, cores, or hemispheres) 7 soldered to individual chips and subsequently soldered to the cooling plate, and the face bonding may involve use of ultrasonic welding, solder balls pedestals and/or beam leads. Alternatively the chips at the time of ball bonding are parts of a single wafer. In another arrangement a single intermediate member is bonded to a vapour deposited layer on the wafer and later subdivided with it. Flow of solder over the chips is limited by a surface layer of silica or silicon nitride. In modified forms plate 3 is outwardly dished or a separate dished member used which is soldered to the balls and attached to the plate by an elastic material such as silicone rubber or foamed resin filled with thermally conductive powders such as beryllia or alumina. Heat dissipation can be further enhanced by filling the casing with silicon oil. Where a separate dished member is used thermal stress is relieved by leaving it floating relative to plate 3 or attaching it to frame 2 via a sinuous flexible diaphragm. Otherwise the intermediate members may be of soft metal, sponge metal or the aforesaid filled elastomers or of sinuous flexible form. Flexible beam leads on the chips also help to absorb stress. As an alternative to solder a pressure contact may be used between the intermediate members and the chips or cooling plate with an intervening layer of tin, lead or silicon oil. Suitable materials for plate 3 are ceramics such as beryllia or metals. In the latter case a metallized silica or silicon nitride layer may be formed on the chips to afford electrical insulation. Techniques for face bonding the chips to the substrate are described with reference to Figs. 3 and 4 (not shown). External connections 10 may form strip line feeders with plate 3 earthed.
Patent GB-1163041-A (GB)
Title: Process for Coating Small-Dimensioned Articles with Smooth Coatings of Fusible Materials.
IPC: B05D1/24
Filed: 1966-10-05
Abstract: 1,163,041. Coating articles, coating apparatus. KNAPSACK A.G. 5 Oct., 1966 [15 Oct., 1965], No. 44477/66. Headings B2K and B2L. [Also in Division C1] A method of coating small articles 2 with smooth coatings of fusible materials, comprises dropping the articles preheated in furnace 14 to a temperature above the melting point of the coating material, through a bed 7 of fluidised material, formed of powdered coating material e.g. of thermoplastic or thermosetting plastics materials, metal or a powder for producing an enamel and produced by the conventional fluidised bed coating method, whereby a coating of defined thickness is formed on the surface of the articles, collecting the articles and removing them continuously by conveyor or discontinuously in a collecting basket (Fig. 1 not shown) and 'smoothing the coating by mechanical treatment e.g. in a scouring or polishing drum or by thermal aftertreatment.
Patent GB-1122697-A (GB)
Title: Air spring seat for vehicles
Inventor: PASKA FRANTISEK
IPC: B60N2/90
Filed: 1966-10-06
Abstract: 1,122,697. Resiliently mounted seats. USTAV PRO VYZKUM MOTOROVYCH VOZIDEL. 6 Oct., 1966 [29 Oct., 1965], No. 44699/66. Heading A4U. In an air sprung vehicle seat, carried on a parallelogram linkage, an air chamber 4 of variable volume, closed by a flexible diaphragm 5, is surrounded by, and communicates through holes 6 with an annular chamber 3 of fixed volume. The chamber 3 is formed by peripherally seam welding two stamped out plates 1, 2, having a common dome constituting the seat pan and top of chamber 4. The central rigid part of diaphragm 5 is moved by coupling 8 and link 9, moving in unison with link 10, so that the air is compressed by lowering the seat. The seat is held level, while it oscillates vertically, by links 14<SP>1</SP> and 15 and is rotatably supported on cross shaft 12, by bearing sleeves (13 and 14), the latter carrying the link 14<SP>1</SP>.
Patent GB-1509597-A (GB)
Title: Buttons
IPC: A44B17/00
Filed: 1975-10-30
Abstract: 1509597 Buttons SCHAEFFER-HOMBERG GmbH 30 Oct 1975 [14 Nov 1974 30 Jan 1975 7 Feb 1975 16 July 1975] 44854/75 Heading A3H In a button, a stem 3 of a button plate 1 is retained in an opening 4 in either a gripping plate 2 or a backing plate 8 (Fig. 1) between which material 7 is gripped and the button plate has freedom to tilt. Alternative stems are shown in Fig. 1 wherein the free end 3' is expanded like a rivet; Fig. 4 wherein a resilient stem is enlarged by inserting a member 17 in an axial recess; Fig. 5 wherein a solid spherical head 22 snaps into the opening 4; and Fig. 10 wherein a hollow spherical head 207 is resiliently pressed into the opening 208. The backing plate 8 (Fig. 1) contains apertures 9 with guide surfaces 10 to engage and bend claws 6 of the foot portion. The backing plate 209 (Fig. 10) has an outer layer which hides the ends of claws 210. The backing plate 409 (Fig. 20) for outwardly bent fastening claws may be replaced by an annular plate or one adapted to receive inwardly bent claws. The spike 23 (Fig. 5) of thermoplastics is deformed after passing through aperture 24 of backing plate 25.
Patent GB-1328354-A (GB)
Title: Carbon dioxide filter units
IPC: A62B19/00
Filed: 1970-09-23
Abstract: 1328354 Carbon dioxide filter AGA AB 23 Sept 1970 [2 Oct 1969] 45302/70 Heading AST A disposable carbon dioxide filter unit for a recirculatory gas system comprises a container 1 for carbon dioxide absorbent material 6, an inlet 2 and an outlet 3, and two tubular extensions 4 and 5 fitted with inlet and outlet valves 8 and 13 respectively. Air breathed out by a patient passes along tube 7, through valve 8 and into the extension 4 where it is supplimented by air from a reservoir (not shown) attached to the inlet 9. The pressure is regulated by release valve 4. The air then passes through the filter and out through valve 13 into tube 5 whence it is returned to the patient. Fresh gas may also be supplied to the patient through inlet 15. The unit is manufactured of plastics material and is generally stored with the tube ends sealed by plugs 16.
Patent GB-1096934-A (GB)
Title: Maleinized oil product
IPC: C09D191/00
Filed: 1965-10-27
Abstract: A maleinized oil reaction product is formed by the steps of (1) reacting a drying oil with 8-15% of maleic anhydride at a temperature of at least 100 DEG  C., (2) maintaining the maleinized oil at a temperature of at least 250 DEG  C. for a time sufficient to raise its viscosity to a minimum as set out below, but not sufficient to cause gelation: .Maleic Anhydride.Minimum viscosity .%.at 25 DEG  C. in cp .8.700 .9.1000 .10.1500 .11.1900 .12.2500 .13.3100 .14.3700 .15.4500 (3) mixing and reacting the maleinized oil with water, and (4) mixing and reacting the hydrolyzed maleinized oil with a base, e.g. diethylamine, to neutralize at least part of the carboxylic acid groups.  The drying oils have an iodine value above 90 and may be linseed oil.  The maleinized oil may be dispersed in water which also contains an alkyl monoether of (di)-ethylene glycol, furfuryl alcohol, dioxan, 3-methoxy - 4 - methylpentanone - 2, a latex of an acrylate, e.g. ethyl polymer or styrenebutadiene copolymer, lampblack, talc, strontium chromate, lead silico chromate, barium sulphate, bentonite, manganese naphthenate in mineral spirits and/or tris(hydroxy-methyl) nitromethane.ALSO:A phosphatized steel panel is coated with a water-dispersed composition containing a maleinized oil reaction product formed by the steps of (1) reacting a drying oil with 8-15% of maleic anhydride at a temperature of at least 100 DEG C, (2) maintaining the maleinized oil at a temperature of at least 250 DEG C for a time sufficient to raise its viscosity to a minimum as set out below but not sufficient to cause gelation:-  .Maleic Anhydride%.Minimum Viscosity ..at 25 DEG C in cp .8.700 .9.1000 .10.1500 .11.1900 .12.2500 .13.3100 .14.3700 .15.4500 (3) mixing and reacting the maleinized oil with water, and (4) mixing and reacting the hydrolyzed maleinized oil with a base to neutralize at least part of the carboxylic acid groups.  The composition may also contain an alkyl monoether of (di)-ethylene glycol furfuryl alcohol, dioxane, 3-methoxy-4-methyl pentanone-2, latex of an acrylate, e.g. ethyl polymer or styrene-butadiene copolymer, lampblack, talc strontium chromate, lead silico chromate, barium sulphate, bentonite, manganese naphthenate in mineral spirits and/or tris (hydroxymethyl) nitromethane.
Patent GB-1219917-A (GB)
Title: Improvements in or relating to electric impulsing devices
Inventor: HARLEY RAYMOND FRANCIS
IPC: H04M1/34
Filed: 1967-10-05
Abstract: 1,219,917. Brakes. GENERAL ELECTRIC CO. Ltd. 22 Nov., 1968 [5 Oct., 1967], No. 45550/67. Heading F2E. [Also in Division H4] A governor for a telephone dial mechanism has a pair of bob weights 52 which engage the sides of frusto-conical recess 56 when driven by spring 30 through gears 22, 36, 44. The governed speed can be altered by axial movement of weight assembly 54 by means of screw 58.
Patent GB-1168907-A (GB)
Title: Circuit
Inventor: SEITZER DIETER
IPC: H01L27/07
Filed: 1967-10-06
Abstract: 1,168,907. Semi-conductor circuits. INTERNATIONAL BUSINESS MACHINES CORP. 6 Oct., 1967 [22 Dec., 1966], No. 45642/67. Heading H3T. [Also in Division H1] The electrodes of an elongated semi-conductor diode form the transmission lines of a directional coupler. A substrate 20 of, e.g. aluminium, provides a common return conductor for transmission lines 22, 23 coupled over a length L. Line 22 consists of a layer of gold separated from the substrate 20 by a layer 21 of insulant, e.g. SiO 2 . A layer 23 of N-type silicon, GaAs or InSb forms with the gold electrode 22 and ohmic electrode 24 (of e.g. aluminium) a Schottky-barrier diode which is back-biased to the non-conductive condition. Electrodes 22, 20 provide an input line, electrodes 24, 20 an output line, and electrodes 22, 24 a coupling line, the characteristic impedances of the three lines being respectively Z 1 , Z 2  and Zk. It is shown that, provided the coupling is weak, a directional effect is obtained if Z 1 Z 2  = Z<SP>2</SP>k, using as a criterion for directionality zero signal at one end of the output line. A further restriction is that the length L of the device must approximate to one-quarter wavelength at the working frequency. The Specification describes in detail how the various dimensions and electrical parameters may be adjusted to fulfil these conditions. Since the operation of the device depends crucially upon the capacitance of the diode, removal of the bias destroys the directionality. Thus, if a pulse from source Vp, Fig. 4, is applied to terminals E 1 , output signals appear at terminals A 1 , Eg so long as the voltage of the pulse remains below the bias voltage Vb. If the voltage peak of the pulse exceeds Vb, the diodes become conducting, directionality is destroyed and an output appears at terminals A 2 , this output signal being free from noise. Alternatively, the circuit may be used as a limiter by short-circuiting terminals A 2  and deriving an output from terminals A 1 . Only input voltages not exceeding Vb appear at the output.
Patent GB-1517652-A (GB)
Title: Cyclic phosphorus-containing pentaerythritol derivatives and their use as flame retardants for polymers
IPC: C07F9/14
Filed: 1976-01-13
Abstract: 1517652 Flame retardants for polymers VELSICOL CHEMICAL CORP 13 Jan 1976 45795/77 Divided out of 1517651 Headings C3K and C3R [Also in Division C2] A polymeric composition comprises a polymer and a flame-retarding amount of a compound I having the formula wherein (a) X and X1 are O or S and Y and Y1 are the same or different and are groups of the formula -N(R)(R1) wherein R and R1 are H, a monovalent hydrocarbon radical or a halogenated monovalent hydrocarbon radical, or (b) each of Y and Y1 is a 2,2-di-(bromomethyl)-3. chloropropoxy group and X and X1 both represent O atoms. Conventional additives and synergists, preferably antimony oxide, may also be present. The compound I may be added during polymerization or after polymerization, e.g. prior to moulding, or may be combined with the polymer when the latter is in the form of a textile filament, fibre or yarn. Examples are given in which certain specified compounds of Formula I are added to a polyurethane foamforming mixture comprising a polyoxypropylene triol and an 80/20 blend of 2,4 and 2,6-toluene diisocyanates as reactive constituents.
Patent GB-1192815-A (GB)
Title: Improved Hydraulic Actuator Unit
Inventor: FRYKLUND PER
IPC: F15B15/18
Filed: 1967-10-06
Abstract: 1,192,815. Hydraulic actuators. ALLM€NNA SVENSKA ELEKTRISKA A.B. Oct. 6, 1967 [Oct. 19, 1966], No. 45826/67. Heading F1P. An hydraulic actuator unit comprises the assembly of a piston 5 slidable in a cylinder 4, a motor driven pump 2, a cooling coil 8 serving also as an expansion chamber and a directional control valve 12, the pump 2 being arranged to withdraw fluid from one side of the piston and deliver it to the other The directional valve 12, Fig. 2 (not shown) is arranged always to direct exhaust fluid through the cooling coil 8 without reversing the pump direction. The cooling coil 8 is helically wound and preferably of flattened cross-section. A shield 1, perforated to allow cooling air to pass therethrough, surrounds the cylinder, pump and cooling coil, but not the pump motor 3.
Patent GB-1283397-A (GB)
Title: Improvements in or relating to film-forming copolymers
Inventor: FEIN MARVIN MICHAEL
IPC: A61K8/81
Filed: 1969-09-17
Abstract: 1283397 Vinyl lactam copolymers GAF CORP 17 Sept 1969 [23 Sept 1968] 45837/69 Heading C3P [Also in Divisions C2 and C5] Film-forming copolymers of (a) a N-vinyl lactam or alkyl, alkoxy or hydroxy-alkyl substituted derivative thereof and (b) a half ester of an unsaturated dicarboxylic acid and a saturated aliphatic, aromatic, cycloaliphatic or heterocyclic alcohol in a ratio of 1 : 1 to 99 : 1 may be prepared by copolymerization in a solvent, e.g. ethanol or isopropanol, in the presence of a peroxide or azo catalyst, e.g. hydrogen, benzoyl, dit-butyl and dilauroyl peroxides, and azobisisobutyronitrile. The products may be used in hair sprays, as corrosion resistant coatings and as additives for lubricating oils and gasoline. Many suitable monomers are listed and examples describe the copolymerization of N-vinyl-2- pyrrolidone with (I and II) monobutyl maleate, (III and IV) mono-2-ethylhexyl maleate, (V) monoamyl maleate and (VI) monostearyl maleate and mono-oxo-octyl citraconate; and (VI) of N-vinyl-3-t-butyl-2-pyrrolidone and mono-t-butyl itaconate, N-vinyl-3-methoxy-2- pyrrolidone and mono-n-hexyl fumarate and N-vinyl-5-ethyl-2-pyrrolidone and mono-ethyl mesaconate.
Patent GB-1206605-A (GB)
Title: Pneumatically activated pressure dressing
Inventor: SARNOFF STANLEY JAY
IPC: A61B17/135
Filed: 1967-10-06
Abstract: 1,206,605. Pressure-applying bandages: measuring blood pressure. S. J. SARNOFF. 6 Oct., 1967 [17 Oct., 1966], No. 45919/67. Heading ASK and ASR. A bandage, tourniquet or blood pressure measuring cuff comprises a flexible strip 10 carrying near one end an inflatable bladder 26 on one side of the strip and a dressing package 16 on the other side of the strip a pump 32 having a pressure relief valve (46), being connected to the bladder by a hose 30 for inflating the bladder. The dressing package 16 has removable paper wrapper 20 with a tear string 22. The strip is made of nylon or muslin and has interengaging fasteners 12, 14, for securing it around a body part, and an adhesive coated tab 24 for securing the bandage to the skin prior to winding it on the body part. A strip extension 74 having fasteners 12 may be attached to the strip 10 by the fasteners 12, 76 so that the device may be wound about the trunk. The pump comprises a bulb 32 having an inlet check valve and an outlet check valve (38), Fig. 3, a bleed valve 58 for manually releasing the pressure in the bladder, an adjustable relief valve (46) which is set to determine the maximum pressure obtainable in the bladder and a connection aperture (66) with a detachable cover 68 for the attachment of a pressure gauge. The valve (46) comprises a nipple against which a screw cap 48 presses a compressible washer (52), the loading of the valve being dependent on the amount by which the cap is unscrewed to permit the escape of air past the washer and the screw threads. Normally, the device is rolled up with the bulb, valve assembly and hose inside the pack.
Patent GB-1523468-A (GB)
Title: Production of block copolymers
IPC: C08F293/00
Filed: 1976-11-05
Abstract: 1523468 Production of block copolymers DEFENCE SECRETARY OF STATE FOR 5 Nov 1976 [6 Nov 1975] 46108/75 Heading C3P A block copolymer is formed by anionically polymerizing a first monomer to form a living polymer having at least one terminal carbanion, terminating said living polymer by the addition of a metallic halide to form an intermediate polymer containing a C-metal bond, and subsequently in the presence of a second monomer, homolytically breaking the C-metal bond of said intermediate polymer to form a free radical, thus uniting polymerization of the second monomer to form a block copolymer. Preferred metals are Zn, Cd, Hg, Sn and Pb and the halide may be an organometal-or inorganic halide. Suitable first monomers are styrene, alpha methyl styrene, butadiene, isoprene, methyl methacrylate, an acrylate, vinylidene chloride and acrylonitrile, and suitable second monomers are isoprene, butadiene, styrene, methyl methacrylate, vinyl ferrocene, acrylonitrile, (meth)- acrylic acid, vinyl chloride, N-vinyl carbazole and maleic anhydride. The homolytic fission of the C-metal bond may be achieved by heat, U.V. or a redox reaction, e.g. by the addition of silver perchlorate. The intermediates of formula are novel and are claimed per se; M1 is a repeating unit derived from styrene, alpha methyl styrene, butadiene or isoprene, n is an integer greater than 10, Me represents an atom of a metal of sub groups IB to IVB of the Mendeleev periodic table and Y is a halogen atom or a group of formula -(M2)m wherein M2 is as M1 and m is as n.
Patent GB-1437384-A (GB)
Title: Apparatus for testing cathode ray tube display systems
IPC: G06F11/22
Filed: 1973-10-08
Abstract: 1437384 Cathode-ray tube apparatus TELETYPE CORP 8 Oct 1973 [24 Oct 1972] 46863/73 Heading H4T The cathode-ray tube of a cathode-ray tube display system is employed as an oscilloscope for testing the internal circuitry of the system. The invention is described in connection with testing the logic &c. circuits 12 of a data display system in which the circuits 12 supply binary type video, i.e. ON or OFF, signals via a video amplifier 24 to intensity modulate a rectangular raster -produced on the screen of the display tube 18 by a generator 14 under the control of timing means 10 which also controls the circuits 12. The latter circuits are provided with a plurality of test points 30 and in operation of the test procedure a switch 22 interrupts the video output on conductors 20 and allows the service man selectively, to connect the various test points 30 to the input of the video amplifier 24, such connections being effected by a manually operable probe means 32. Each display track such as that shown is representative of a voltage waveform such as 40 is then compared with a picture of what the trace should be and the service man is thereby enabled to identify a defective circuit should the trace and the picture not correspond.
Patent GB-1272818-A (GB)
Title: Locknut
IPC: F16B39/284
Filed: 1969-09-24
Abstract: 1,272,818. Lock nut. STANDARD PRESSED STEEL CO. 24 Sept., 1969 [8 Oct., 1968], No. 46917/69. Heading F2H. A lock nut 10 having a body (12) of polygonal cross-section and a frusto-conical crown (14) at one end (Fig. 1, not shown) has indentations 22 in selected flat faces of the body which correspond radially with inward distortions 24 of the bore 16 (called locking regions), each indentation having a curved inner wall 22a with ends indented further than the crest 22d of the curved wall and each of the locking regions of the bore 24 having a radius of curvature greater than the radius of curvature of the relatively undisturbed parts of the bore 25.
Patent GB-1209740-A (GB)
Title: Transistors
IPC: C23D5/00
Filed: 1969-09-26
Abstract: 1,209,740. Semi-conductor devices. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 26 Sept., 1969 [30 Sept., 1968], No. 47433/69. Heading H1K. In a high-power transistor whose base region 5 adjoins a plane surface of the device and whose emitter region 6, 7 adjoins the said surface and is surrounded entirely by the base region, the emitter is apertured and comprises at least two component zones 6, 7 separated from one another by the base region, parts of which project to the plane surface through the apertures 8 and are connected there to a base contact 12. A surface insulating layer covers at least the line of intersection of the emitter base junction at the surface and comprises silicon oxide or silicon nitride. The emitter and base electrodes 15, 12, are interdigitated and are of aluminium. To improve current distribution a resistor connected between the component zones of the emitter may also be incorporated with the transistor, Fig. 3 (not shown), either as a diffused layer in the body isolated by a reverse biased junction, or as a surface layer of titanium, tantalum, or a nickel chrome alloy. Other circuit elements may be included as required.
Patent GB-1132208-A (GB)
Title: Improvements in circuit devices for converting a direct current voltage into a stepped alternating current voltage
IPC: H02M1/26
Filed: 1965-11-09
Abstract: 1,132,208. Inverting. SVENSKA ACKUMULATOR A.B. JUNGNER. 9 Nov., 1965 [16 Nov., 1964], No. 47526/65. Heading H2F. A D.C. to A.C. converter comprises a cascade arrangement of transformers each having a tapped -primary winding whose ends are alternately connected by a switching arrangement to one output terminal of the preceding stage and whose centre tap is connected to a common line, the turns ratios of the transformers and the operating frequencies of the switching arrangements (which are harmonically related) being such that a stepped waveform approximating to a sine wave is obtained. As shown a D.C. supply E is alternately connected between the centre tap of a transformer primary winding and its ends by means of a switching arrangement a 2 . The secondary winding is arranged and tapped to give the turns ratio shown, the tapping being connected to the +ve terminal, the upper end of this winding being connected to the common switching terminal of a further transformer arrangement and the lower end to a tapping on the secondary winding of that transformer. The switching arrangement of this stage a 1  operates at half the frequency of the arrangement a 2 . The second transformer has the turns ratios shown, and the ends of the secondary winding are connected to the common switching terminals of two further transformer arrangements. These switches operate at half the frequency of the previous stage and act with a 90 phase displacement so as to furnish two output voltages U s1  U c1  in quadrature. The switches may be bi-phase transistor arrangements all operated in dependence on a single master oscillator.