baber/WOPTO huggingface dataset:
Patent DE-3934328-A1 (DE)
Title: Super-twist liq. crystal displays having wide working temp. range - contain nematic liq. crystal mixt. with specified range of properties
Inventor: WILHELM STEFAN DR
IPC: C09K19/34
Filed: 1989-10-13
Abstract: In a super-twist liq. crystal display with (a) two plane-parallel supporting plates forming, with a border, a cell, (b) contained in the cell, a nematic liq. crystal mixt. (I) having positive dielectric anisotropy to which a doping component consisting of one or more dopants is added, (c) electrode layers with orientation layers laying on top on inner faces of the supporting plates, (d) an angle between longitudinal axis of mol. at surface of supporting plates and the supporting plates of about 1-30 deg., and (e) twist angle of liq. crystal layer in cell from orientation layer to orientation layer of between 160 and 360 deg., (I) has clear pt. of 70 deg.C or more, and, in temp. range 0-50 deg.C, low temp. dependence of dielectric anisotropy, d delta epsilon/dT being less than 8 x 10 power (-2) K, and negative temp. dependence of helical twisting power (HTP), of dopant(s), d(HTP)/dT being between zero and -5 x 10 power (-2) mu-m-1 K-1. ADVANTAGE - Displays have wide working temp. range for external uses such as portable computers or displays for motor vehicles, favourable contrast, angle dependence of contrast, stability, switching time, etc..
Patent DE-3934461-A1 (DE)
Title: Electromagnetic field prodn. system using induction coil and cryotrons - generates propulsive force from interaction of environment with rotating field due to cryotron and switches
Inventor: PRIEBE KLAUS-PETER DIPL ING
IPC: H02N11/00
Filed: 1989-10-15
Abstract: Propulsive force is derived from interaction between the idnuction coil (1) and the  environment in which the coil is coupled via current-rectifying cryotrons (12) to a centre  conductor (2) and coaxial lines (3-10) controlled by switching cryotrons  (11) with switches  (14) for rotation of the generated electromagnetic field. The currents in the centre conductor (2) and in the coaxial lines flow in opposite directions from the two separate sec. windings of the toroidal induction coil (1). USE/ADVNATAGE - For aerospace propulsion.  Interaction between pulsed DC or AC field and magnetic or electric environmental medium is utilised.
Patent DE-3939652-A1 (DE)
Title: Twin wheel externally meshing gear pump - incorporates roller bearings to support free gear
Inventor: JUERGENS GUNTER DIPL ING
IPC: F01C21/10
Filed: 1989-11-30
Abstract: The external axis gear pump is for a hydraulic medium.  It incorporates two externally toothed spur gears in which one gear is mounted as a free gear (6) in tapered roller bearings (13,14) with the outer ring (16) axially displaceable against its bore (19) and supported by a spring (12). The spring and the apex (20) of the taper angle (21) of the roller bearing (14) lie on the side of the bearing opposite that of the free gear. USE/ADVANTAGE - Gear pump in which geometrically induced periodic oscillations in the delivery flow are reduced.
Patent DE-4008061-A1 (DE)
Title: Drive system for sliding window - has two fixed racks and with directly coupled pinions each side of window
Inventor: ANDREI-ALEXANDRU MARCEL
IPC: E05F15/689
Filed: 1990-03-14
Abstract: The window is moved along two parallel gear racks (12,14) by two pinions (28,30) which each grip one side of the system. The pinions are rigidly coupled together to prevent uneven drive. The drive motor (40) is mounted near the bottom of the system and has a drive coupling (50) to the pinion shaft. - The drive motor is mounted on a bracing frame linking the racks. The drive to the pinions can be a belt/chain drive with fixed pulleys (60,62) on other cross braces. Different layouts can be made using these principles, including using plastics moulded pinions for low noise.
Patent DE-4010518-A1 (DE)
Title: Gas driven tool for fixing device - has boss on piston crown guided in port between combustion and working chambers
Inventor: SPRENGER MARKUS
IPC: B25C1/08
Filed: 1990-04-02
Abstract: The gas-driven tool is particularly for inserting fixing devices in position, having a driving piston (4) with crown (6) contained in a working chamber (1). A combustion chamber (2) for the gas is connected to the working one. A wall (8) between the chambers contains a port (8a) whose clear diameter is less than that of the working chamber. A boss (7) on the piston crown is guided in the port. USE/ADVANTAGE - Gas driven tool for inserting fixing devices combines simplicity and increased power.
Patent DE-4012005-A1 (DE)
Title: Prepn. of polyurethane foam mouldings with compact surface
Inventor: NEUHAUS ALFRED
IPC: C08J9/02
Filed: 1990-04-13
Abstract: Mouldings with density at least 120 kg/3 m are made from polyurethane foams with a compact surface by foaming, in a mould, a reaction mixt. contg. (a) an aromatic polyisocyanate, (b) an organic cpd. with at least 2 gps. reactive with NCO, (c) salts contg. water of crystallisation as blowing agent, opt. with chemical or physical blowing agents, and opt. (d) auxiliaries and additives, while maintaining an NCO factor of 75-1500 (NCO factor = (number of NCO gps./number of NCO-reactive gps.) x 100).
Patent DE-4014520-A1 (DE)
Title: Stacking container for liquids - has rectangular support of cardboard containing inner container with outlet and spout
Inventor: HENN DIRK
IPC: B65D77/06
Filed: 1990-05-07
Abstract: The stacking container, for milk, fruit-juice or  pourable products, consists of a rectangular support (2) made of cardboard or similar material which retains its shape and which contains a detachably fixed inner container (3) rounded on all sides. The inner container is made of foil or coated cardboard and does not touch the support. The inner container has an outlet (4) with a spout (5) penetrating the inner container and which is re-closeable. The space between the inner container and support is filled or contains foam. USE/ADVANTAGE - The stacking container can be re-used.
Patent DE-4033871-A1 (DE)
Title: New 14 alpha,17 alpha-bridged oestratriene derivatives
Inventor: LAURENT HENRY DR
IPC: C07J53/00
Filed: 1990-10-22
Abstract: New 14alpha, 17alpha-bridged oestratrienes of formula (I) are claimed. When OR3 is in the alpha-configuration: R1, R2, R3 = H, -CO-R4 or -(CH2)n-CO2H, where n = 1-4. R1 may also be benzyl, 1-8C alkyl or 3-5C cycloalkyl; R4 = an organic gp. with up to 11C atoms. When OR3 is in the beta-configuration: R1, R2, R3 = H or 1-12C acyl; R1 may also be 1-8C alkyl. In both cases, A-B is an etheno or etheno bridging bond.  18 cpds. are specifically claimed, including 3-benzyloxy-14alpha, 17alpha-ethano- 1, 3, 5(10)oestratriene-16alpha, 17beta-diol and 14alpha, 17alpha-ethano -1, 3, 5(10) oestratriene-3, 16alpha, 17beta-triol. Also claimed is a method of preparing (I), e.g. from 3, 16beta, 17beta-triacetoxy-14alpha, 17alpha-ethano-1, 3, 5 (10)-oestratriene-16alpha-carbonitrile.  For treating disorders involving oestrogen deficiency, unit oral dose is 0.001-0.05 mg. Solns. for intramuscular injection contain 0.01-1 mg (I) per ml, and vaginal salves contain 0.1-10 mg (I) per 100 ml. For contraception, tablets contain 0.003-0.05 mg (I) and 0.05-0.5 mg of a gestagen.
Patent DE-4036152-A1 (DE)
Title: Audio loudspeaker arrangement for stereo signals - has high frequency loudspeaker angled to bounce sound waves off room wall
Inventor: LANG DIETER
IPC: H04N5/64
Filed: 1990-11-14
Abstract: The loudspeaker unit has respective loudspeakers for the bass and medium tone signals fixed so that they face forwards, with the loudspeaker for the higher tone signals rotatable to allow the radiated sound to be reflected from the rear wall of the room towards the ideal listening position. Alternatively all three of the former loudspeakers are fixed in position at an angle of 12 degrees to the ideal listening positioning. An auxiliary loudspeaker for the high tone signals at one side for bouncing the sound waves off the adjacent room wall. ADVANTAGE - Optimal sound effect.
Patent DE-4040723-A1 (DE)
Inventor: KREUZER KONRAD
IPC: B08B15/02
Filed: 1990-12-19
Abstract: Fume hood having a box-shaped housing which in the interior bounds a working space (17) and is open at the front. A fume extraction device is connected to the working space via an extraction opening. An impact plate (10) is arranged in front of the extraction opening to the working space (17) and bounds between its lower edge and the rear wall of the housing and between its upper edge and the ceiling of the housing in each case one fume extraction slot (21, 22). A sliding window (4) is provided so as to be vertically displaceable at the open front of the housing. The ceiling-side part (17a) of the working space (17) has the shape of an upwardly tapering shaft (10, 7, 8) which is composed of a part of the impact plate (7), the adjoining cover part (7) and a further cover part (8) which extends between the front edge of the cover part (7) and the upper edge (15) of the opening of the open front of the housing. <IMAGE>
Patent DE-4042446-A1 (DE)
Title: Compressor for vehicle pneumatic tyre - has one component coupled to eccentric weight turning on wheel axis
Inventor: BINDER JOHANN
IPC: B60C23/12
Filed: 1990-11-15
Abstract: The air compressor is for use with a vehicle wheel having one or more pneumatic tyres. It has a first component (37) forming a pump chamber (36), and in which a second component (35) works. A passage connects the chamber to the tyre. Relative movement between the components is generated by fixing one to the wheel or its hub (28), and the other to a component (32) not rotating with the wheel. The latter component consists of a weight turning on an axis (33) coaxial with the hub and round the latter, its centre of gravity being offset in the radial direction from this axis. ADVANTAGE - Simplicity, automatically correcting tyre pressure in the event of a puncture.
Patent DE-4100957-A1 (DE)
Title: Automatic equipment for removal of dust layers - has pulsating air jet and electrostatic collector
Inventor: WEINBERG ULLI
IPC: B03C3/00
Filed: 1991-01-15
Abstract: The equipment has directional airjets which loosen the dust : layers and an electrostatic charging system which charges the loosened particles. The particles are collected by a collector (10) with opposing charge and with an automatic sealing of the collected dust. The airjets are pulsed to increase the loosening effect. The equipment is moved under the surfaces covered with duct. The remote control eliminates any manual supervision on site.  The dust collects on an adhesive film (34) which is reeled into a sealed container, which is closed and disposed off automatically. USE/ADVANTAGE - Asbestos dust sites. No health risk, efficient dust removal.
Patent DE-4103248-A1 (DE)
Title: Bearing arrangement for steel finishing plant - gives better finish avoiding lateral flaws by introducing plastic rings between bearing outer ring and housing
Inventor: SUPIK GERHARD
IPC: B21B31/07
Filed: 1991-02-04
Abstract: A bearing arrangement for the working roller (1) of a metal strip finishing plant prevents the occurrence of a lateral strip like flaw, esp. during rolling of thin plate or sheet. One or more elastomeric plastic rings (9) are located between the housing (8) and the outer rings (7) of the roller bearings (4). The plastic rings (9) are contained in an enclosed space by end rings (10) to ensure no free play. USE/ADVANTAGE - The plastic ring is used on metal finishing plants to give better finishes by eliminating lateral strip-like flaws.
Patent DE-4107200-A1 (DE)
Title: Thermal redn. of industrial waste - by removing organic and inorganic material using low temp. distn. reactor, and treating waste material of low heat value
Inventor: MAY KARL WOLFGANG DIPL ING
IPC: C10B53/00
Filed: 1991-03-06
Abstract: A plant for thermic redn. of refuse uses a low temp. (300 - 700 degs C.) distn. reactor. The plant treats soil contaminated with organic or inorganic substances, contaminated wood, oil, slurry and a plastics of all types, as distinct from household refuse. Contaminants include heavy metals, inorganic substances containing HC1 or CN-. The novelty lies in the treatment and sepn. of the distn. prods. and of the larger, solid materials, from fine dust or gaseous material. The relatively low temp. distn. is carried out mainly without oxygen. The process ensures that:- a) liq. fine particles and dry waste prods are burnt. b) dust is removed from the smoke and trapped in the melted slag. c) heavy metal oxides are sepd from the smoke for further recycling. d) the molten slag after cooling can be used for building material. USE/ADVANTAGE - Provides an economical means of handling contaminated waste which is of low heat value. Ensures extensive redn. of organic and inorganic contaminants in the residues which can then be safely deposited. Oxides of heavy metals are recoverable for further recycling.
Patent DE-4113819-A1 (DE)
Title: Gun sight for sporting gun - has iris-type shutter which can be accurately adjusted
Inventor: GUGOLZ ROLF
IPC: F41G1/08
Filed: 1991-04-27
Abstract: A sporting gun has a ring type sight which has an iris type shutter. The iris type shutter consists of a cage (10) constructed from thin longitudinal strips arranged to form a cylinder. Each strip has an end piece of triangular cross-section so that the cylinder has a conical end region (19). Each end of the cage is supported in a hub (1314). The hub (13) is supported by two radial arms (11) attached to the outer housing (1). The arms (11) pass through slots (16) in the sliding inner housing (8) which supports the outer ends of the radial arms (12) attached to the outer arm. Rotating the screwed sleeve (5) imparts an axial movement to the cage (10) forcing the conical end region (19) into the bore of the hub (13) and so reducing the internal dia. of the cage (10). USE/ADVANTAGE - Gun sight with accurate adjustment of its iris type shutter.
Patent DE-4114498-A1 (DE)
Inventor: AU GUENTER VON DIPL CHEM DR
IPC: C08L83/04
Filed: 1991-05-03
Abstract: The invention concerns aqueous emulsions of (A) organopolysiloxane free from basic nitrogen and (B) alkyltrialkoxysilane which contain (C) an emulsifier and (D) water. Organopolysiloxane (A) has formula RaSi(OR<1>)bO4-a-b/2, wherein R has identical or different, monovalent, optionally substituted C1-C18 hydrocarbon residues bonded by SiC, R<1> has identical or different, monovalent, optionally substituted C1-C6 hydrocarbon residues, a is equal to 0, 1, 2 or 3, on average 0.75 to 1.5, and b is equal to 1, 2 or 3, on average 0.2 to 2.0, and has a molecular weight of at least 600 g/mol. Also disclosed are a method for preparing said emulsions and their use for water-repellent impregnation of cement-bonded fibrous building components.
Patent DE-4114620-A1 (DE)
Title: Open fire fighting method - involves placing porous components permeable only to gas and fireproof over flames
Inventor: WEHLAN HELMUT DR
IPC: E21B35/00
Filed: 1991-04-30
Abstract: The method fights open fires, using porous components (2) of fireproof material, permeable to gas but not flames. These are placed over or in the flames, and lowered onto the seat of the conflagration. The material used can be the same as that in a dry flame trap, e.g. fine-mesh woven wire, packets of plain washers or plates etc. Other firefighting equipment can also be used on the flames during lowering onto the seat. USE - Particularly on large fires.
Patent DE-4118337-A1 (DE)
Inventor: STAHL WERNER DR
IPC: C12M3/06
Filed: 1991-06-04
Abstract: The invention relates to a stirring device especially for biological substances. The stirring device provides for the gentle homogenisation and cooling or heating ot the medium to be stirred. There is at least one heat exchange surface in the stirrer.
Patent DE-4120992-A1 (DE)
Title: Combination oven with dielectric and thermal heating - has microwave waveguide filled with layer of insulating material having relative permittivity similar to air
Inventor: BOLLMERS WOLFGANG
IPC: H05B6/80
Filed: 1991-06-25
Abstract: The combination oven has a microwave generator which is connected via a waveguide (12) to a microwave inlet in the boundary surface of the oven muffle. The oven also includes a thermal heating element. The waveguide is filled with a layer of thermal insulating material (15) which has a relative permittivity similar to that of air. The thermal insulating material may be glass wool or ceramic wool. The waveguide is pref. formed as a grating (20) in the area around the microwave outlet. Holes in the grating are dimensioned to prevent the radiation of microwaves from the waveguide. A wave stirrer (17) may be provided in front of the microwave inlet to distribute the microwave energy. ADVANTAGE - Minimises heat losses in waveguide, esp. at high muffle temperatures.
Patent DE-4122533-A1 (DE)
Title: Rigid joint between enamelled parts - esp. of stirrer device used to stir aggressive media
Inventor: OTTE SIEGFRIED
IPC: F16D1/092
Filed: 1991-07-08
Abstract: In a binding and twisting resistant joint between two enamelled parts, pref. enamalled stirrer components, the novelty is that (i) the journal (1) consists of a circular cylindrical portion (2) and a rotationally parabolic portion (3) and the boss (4) consists of a conical portion (5) and a circular cylindrical portion (6); (ii) the circular cylindrical journal portion (2) and the conical boss portion (5) are radially offset, by an eccentricity (7), w.r.t. the rotationally parabolic journal portion (3) and the circular cylindrical boss portion (6) respectively; (iii) the wall thickness of the rotationally parabolic journal portion (3) is upto 60% of the wall thickness of the conical boss portion (5); and (iv) the generatrix of the rotationally parabolic journal portion (3) is barrelled by max. 0.1% of its greatest dia. beyond the chord of the generatrix. USE/ADVANTAGE - The joint is useful for enamelled stirrer devices used to stir and mix aggressive, explosive and hazardous media under extreme pressure and temp. conditions. The joint is a rigid interference joint which minimises pressing of the enamel surfaces, has contacting surfaces which are simple to form, and is not sensitive to sudden temp. changes.
Patent DE-4122853-A1 (DE)
Title: Removing liquid manure from silo and distributing on land - using tractor-drawn tanker connected to silo by pipeline and to distributor by hosepipe
Inventor: GRUBE GUENTER
IPC: A01C23/00
Filed: 1991-07-10
Abstract: Pumpable, useful liquid like liquid manure or sludge is removed from a silo (4) and is distributed over fields or green areas. A tractor (2) and a mobile storage tanker (5) are used for the purpose, and the tanker (5) is connected to the silo (4) by a pipe (7). A hose connects the distributor (9) through a pump (11) to the silo (4) or to the tanker (5). USE/ADVANTAGE - An environmentally friendly method avoiding the unpleasant smell associated with removing liquid manure from silo and distributing on land.
Patent DE-4124875-A1 (DE)
Inventor: ROSSNER WOLFGANG DR
IPC: C03C17/02
Filed: 1991-07-26
Abstract: A layer of glass ceramic or glass-ceramic based glass structure with at least one luminescence activator is used as the fluorescent coating (12) for a beam converter screen.
Patent DE-4126280-A1 (DE)
Title: Arrangement to protect large metal aggregates e.g. turbines from corrosion - in which required amt. of desiccant in inner cavity is determined by air passing through breathing vent
Inventor: HAHN KARL FRANZ
IPC: B65D85/68
Filed: 1991-08-08
Abstract: Large metal aggregates such as turbine or generators have a hollow interior cavity connected to the outside air by cracks or apertures through which air can flow during delivery transport. The inner cavity is connected with the ambient air by a breathing vent of defined size and in comparison with which other air leads are negligible. The required amt. of dessicant in the inner cavity is determined by the air passing through the breathing vent. USE/ADVANTAGE - Large metal aggregate assemblies such as turbines or generators are protected from corrosion during transport. They can be thus assembled at the factory and delivered in an assembled instead of a disassembled condition.
Patent DE-4130782-A1 (DE)
Title: Vehicle door fixing appts. - uses motor-driven mechanism to clamp door when static or moving slowly until greater than defined force applied
Inventor: ADAMS RICHARD
IPC: E05C17/00
Filed: 1991-09-16
Abstract: The appts. fixes the door, esp. of a motor vehicle, in at least one open position. A lockable fixing element (20) pivotably links one end (22) to a door frame (16) outside its pivot axis. The element is fixed and guided by a device (63) with a part which exerts a force on the element to hold the door in an open position against unintentional motion. The device is actuated by a controlled motor drive (62) to clamp the fixing element with a static or relatively moving door or release it if the door is moving at faster than a defined speed. ADVANTAGE - Operates automatically when door is static or moving slowly and retains door position until set force is exceeded.
Patent DE-4132712-A1 (DE)
Inventor: EDENHOFER BERND
IPC: C21D1/673
Filed: 1991-10-01
Abstract: A vacuum furnace for plasma carburisation of metallic workpieces in an artificially generated electric field by means of a carbon-containing gas comprises an electric heating device (11), a vacuum pump (24) for producing a vacuum in the heating chamber (6) and gas inlet orifices (9) by means of which a cooling gas delivered by a fan (22) and passed through a heat exchanger (21) is fed to the charge (7). To obtain a vacuum furnace of smaller constructional size than that of known vacuum furnaces, the furnace casing (1) in the form of a pressure vessel is designed with respect to its permissible pressure loading for a pressure of at least 10 bar, as is the drive (4) of the fan (22) with respect to the gas pressure which can be reached on cooling of the charge (7). In addition, the gas inlet orifices (9) bearing the cooling gas are located in the heating chamber (6) and point to the charge (7). <IMAGE>
Patent DE-4140853-A1 (DE)
Inventor: GANSOW PETER
IPC: A47L11/164
Filed: 1991-12-11
Abstract: A floor cleaning machine comprises at least one motor-driven rotatable disc-shaped brush (1), a tank for cleaning fluid and a pipe for cleaning fluid leading from the tank and directed towards a region at the back of the brush (1) located between the central axis of the disc-shaped brush and a circular line in the latter in which a plurality of holes (3) are formed through the brush, whilst above the brush there is a liquid-retaining member (4) which surrounds the holes and makes possible cleaning of a comparatively large surface area with a comparatively small usage of water and cleaning fluid. The liquid-retaining member is formed as a ring (4) which, on its peripheral edge directed away from the rear side of the brush, comprises a peripheral collar (5) directed radially inwardly towards the central axis of the brush (1). <IMAGE>
Patent DE-4203750-A1 (DE)
Title: Electromagnetically operable central shutter for photographic camera - has springs for shutter blades free from tension when armatures are abutted against permanently magnetised stops
Inventor: HEINZE MARTIN
IPC: G03B9/08
Filed: 1992-02-10
Abstract: Electromagnets (9) with U-section cores (10) are used. The associated armatures (16) are built up from U-shaped laminations, with their limbs (15) entering into coils (14) wound on the limbs (13) of the cores (10). To reduce the moving masses the armatures (16) are coupled directly to the push rods (5) actuating the shutter blades (3), which are biased towards their starting positions by springs (20) with steeply progressive characteristics. A permanent magnet (21) accelerates the opening movement of the blades (3). Rebound may be suppressed also by permanent magnet. ADVANTAGE - Substantially shorter operating times are achievable with a shutter of given size.