baber/WOPTO huggingface dataset:
Patent DE-3935908-A1 (DE)
Title: Equipment to spin staple fibre - utilises electrostatic field between drafting zone and jet twister
Inventor: STAHLECKER FRITZ
IPC: D01H1/00
Filed: 1989-10-27
Abstract: Equipment for spinning staple fibres utilizes a drafting zone followed by a jet twister, between which is developed an electrostatic field. The jet twister produces a false twist. USE - The system creates a simplified spinning method, incorporating the specific application of an electrostatic field as part of the process.
Patent DE-3939229-A1 (DE)
Title: Vibration welding appts. with reduced frame loads and mass - beam masses are balanced by coupling beams in oscillating direction to allow greater usable amplitude
Inventor: GROTH CLEMENS
IPC: B29C65/06
Filed: 1989-11-28
Abstract: The invention relates to a vibration welding appts. which produces frictional heat by action of a constant load on the vibrating components. In current designs of welding presses the holding tool is vibrated horizontally while the other tool holder is held stationary, an arrangement which requires heavy cross beams. An improved system envisages dynamic coupling of the cross beams in the direction of vibration, which balances the beam masses. The usable amplitude of vibration is greater, a smaller load is exerted on the press frame and the frame mass can be reduced. USE/ADVANTAGE - The welder is used to join thermoplastic components and is particularly suited to welding automotive components 2-3 m long.
Patent DE-3940309-A1 (DE)
Inventor: HERDLICKA ALWIN
IPC: E21D20/02
Filed: 1989-12-06
Abstract: For fixing anchorage means such as anchor rods in solid receiving materials without expansion pressure, mortar compositions are used which consist of a hardener and a resin. To improve the strength properties, a vinyl ester-urethane resin is used which may have been pre-accelerated.
Patent DE-3940729-A1 (DE)
Title: External rear view driving mirror - has inner housing which pivots inside pivoting outer housing
Inventor: LEONBERGER KARL-HEINZ
IPC: B60R1/076
Filed: 1989-12-09
Abstract: The externally mounted rear view mirror for a motor vehicle has the mirror glass (4) mounted in an inner housing (3) which is installed in an outer housing (6). This outer housing (6) is attached by a pivoted link (20) and a spring (24) to a support (2) which is mounted on a foot (1) fixed to the vehicle structure. The inner housing (3) is pivoted on one side to a lug (8) fixed to the support (2) and is pivoted on the other side to the edge (13) of the outer housing (6). In the event of the mirror receiving a blow in the direction (P) the ink (20) swings outwards about the pivot (31) whilst the inner housing (3) pivots about the lug (8). USE/ADVANTAGE - The design meets road safety requirements.
Patent DE-3942294-A1 (DE)
Inventor: MAGER HERBERT DR
IPC: A61K8/40
Filed: 1989-12-21
Abstract: The subject of the present invention is a means for the oxidative dyeing of hair based on a customary developer/coupler combination in hair dyeing containing 0.01 to 1.0 % wt. 2-amino-6-chloro-4-nitrophenol or its physiologically acceptable, water-soluble salt, and a process for the oxidative dyeing of hair using this agent.
Patent DE-4001608-A1 (DE)
Title: New carboxylic acid salts of phenyl:piperazine cpds. - useful as anxiolytics in human and veterinary medicine and in farming
Inventor: KUTSCHER BERNHARD DR
IPC: C07C229/24
Filed: 1990-01-20
Abstract: Salts of phenylpiperazines (I) with carboxylic acids R1-CH(X)-CO2H (II) are new: where R = H, halogen, trifluoromethyl, hydroxy, 1-6C alkyl, 1-6C alkoxy, amino, 1-6C alkanoylamino or 1-6C alkanoyloxy; R1 = H, phenyl, indolyl-3-methyl, imidazolyl-4-methyl or 1-10C alkyl opt. mono- or di-substd.  by hydroxy or opt. mono-substd. by carboxy, phosphono, 1-6C alkoxy, mercapto, 1-6C alkylthio, phenyl, hydroxyphenyl, 2-6C alkanoylamino or 1-6C alkoxycarbonyl; X = H, hydroxy, amino, protected amino or -CH(X)- = -C(O)-; and hydroxy gps. present can be esterified with phosphoric acid. New salts are prepd. by reacting (I) with (II). (claimed). USE/ADVANTAGE - New salts have anxiolytic or antiaggressive activity and are useful in treating anxiety, tension and excitation states as well as vegetative and psychosomatic disorders. Their activity is comparable to that of diazepam, but with an improved therapeutic range w.r.t. sedation and ataxia. The oral LD 50 (mice) of the new salts is e.g.  abvoe 400 mg/kg.
Patent DE-4008674-A1 (DE)
Title: Garment interlining material - uses non-woven polyolefin(s) as carrier for high shear strength
Inventor: ENGELS KARL-HEINZ DIPL CHEM DR
IPC: B32B27/12
Filed: 1990-03-17
Abstract: The interlining material, between the outer fabric of the garment and the inner lining, uses a polyolefin non-woven as the carrier (2), formed by tangled continuous fibres. A polypropylene is pref. as a polyolefin. The lamination between the non-woven (2) and the film (1) is by an adhesive (3) which does not cover the whole surface area, or an adhesive with breathing properties is used over the whole surface. The lamination is carried out in a temp. range of 100-160 deg.C. After lamination, the non-woven (2) and the film (1) are held under pressure for at least 24 hrs. at room temp., or for about 48 hrs. The laminated material is wound into a roll, and covered by a wound strip which keeps the material under pressure. ADVANTAGE - The material has a high shear strength, but gives a comfortable handle.
Patent DE-4016935-A1 (DE)
Title: Long-life thermal printing head with hard low-friction coating - uses diamond-like amorphous carbon coating to protect resistive heating elements from wear
Inventor: KROKOSZINSKI HANS-JOACHIM DIPL
IPC: B41J2/335
Filed: 1990-05-25
Abstract: A thermal dot-matrix print head consists of a row of thick-film resistors on a ceramic substrate. The resistors are heated by pulsed voltages as they are drawn across heat-sensitive paper to leave the desired printed pattern. The life of a print-head is limited by the wearing down of the resistors by friction against the paper. A cross-section of a long-life head shows a resistor (4) protected by a coating of diamond-like amorphous carbon, added by the chemical vapour deposition (CVD) process. This material exhibits high thermal conductivity while being a good electrical insulator, and can be made thin enough to allow fast heating and cooling, and unimpaired printing speed. ADVANTAGE - Extends working life tenfold.
Patent DE-4018041-A1 (DE)
Title: Oxygen application helmet with regulating valve or flowmeter - has two small electromotors lifting tug cords against spring force to open visor if gas flow interrupted
Inventor: HOEFER JUERGEN
IPC: A61M16/06
Filed: 1990-06-06
Abstract: The front cover (visor) is spring loaded so that it remains closed while gas is flowing through a variable coupling line via a regulating valve or flowmeter. The visor is automatically opened if the gas flow is interrupted. A pulse is generated when the regulating valve or flowmeter is closed. This pulse activates two electromotors on both sides of two cords lifting the visor. The visor is closed by springs tensioned on both sides. These springs exert sufficient force to seal the front opening (2) of the helmet (1) hermetically. The empty space (5) remaining in-front of the chin is closed by a skin (6) pressed in the neck direction by springs or rubber. USE/ADVANTAGE - Supplying pure air or mountain, sea or country air for short periods in alternation with ambient air. Hygenic, i.e. can be used by a group.  Attractive, i.e. does not seem like medical appliance so can be used more in sport. Comfortable.
Patent DE-4019789-A1 (DE)
Inventor: NOVOTNY RUDOLF DR
IPC: C01B33/32
Filed: 1990-06-21
Abstract: The invention relates to a process for preparing sodium silicate solutions by hydrothermal reaction of raw materials containing SiO2 with aqueous sodium hydroxide solutions at temperature between 100 and 300  DEG C and at the saturated water vapour pressures corresponding to these temperatures in a pressure reactor, characterized in that the SiO2-containing raw material used is glass.
Patent DE-4020467-A1 (DE)
Title: Multiplate capacitor variable by applied voltage - has control electrode in chip form and sintered monolithic block providing dielectric layers of ceramic material
Inventor: FRITSCH GEORG
IPC: H01G7/06
Filed: 1990-06-27
Abstract: A multiplate electrical capacitor has dielectric layers (12-16) with metal plates (17, 18) having centre apertures. Spaced between these, other metal plates (19, 20) have isolation gaps at the edges. The plates are coupled by solder points (21, 22). The unit is produced as a sintered monolithic block, with the metal layers (19, 20) acting as control electrodes. The isolation surface (23, 24) are readily changed in a screen printing process. ADVANTAGE - Variable high capacitance. Can be soldered in printed circuits.
Patent DE-4021468-A1 (DE)
Title: Reconditioning of porous aluminium tanks - involves roughening surface of porous area and compressing the surface
IPC: B24C1/06
Filed: 1990-07-05
Abstract: Tanks made of aluminium of 99.5 percent purity, which are used in the foodstuff industry, are liable to become porous due to the effect of the acid in the  foodstuff. These tanks can be made fit for re-use by roughening the porous areas by sand blasting using sharp edged grains of sand or carborundum to produce small projections and hollows in the aluminium surface.  The areas thus treated are then subjected to shot blasting or a  similar process which compresses the aluminium and closes the pores. USE - Reconditioning of aluminium tanks for foodstuffs
Patent DE-4021598-A1 (DE)
Title: Lever transducer for liquid level measurement - has damper for pendulum motion in form of electromagnetically operated brake operated at frequency between 100 and 200 Hz
Inventor: SCHNEIDER DIETER
IPC: G01F23/36
Filed: 1990-07-06
Abstract: The lever transducer for measuring liquid level contains a lever (2) pivotable about a horizontal axis with a float on its free end and with a damper (9) which damps out pendulum motion of the lever. The damper is a brake which alternately blocks and frees the lever. It contains a braking pad (11) which is movable against a brake disc (10) by an electromagnet (12). The brake is designed to operate at a frequency of between 100 and 200 Hz. ADVANTAGE - Damper can easily be adapted for different conditions.
Patent DE-4023725-A1 (DE)
Title: Measured value signalisation system - with interruption or short-circuit of measuring lines at measuring device
Inventor: KEUTHEN KLAUS
IPC: G08C19/02
Filed: 1990-07-26
Abstract: The signalisation system uses measured data lines (D1, D2) extending between a measuring device (10) and a spaced evaluation device (A). The data lines (D1, D2) can be interrupted or short-circuited at the measuring device (10), with detection of the temporary interruption or short-circuit by the evaluation device (A), to indicate a preceding or following measured value. Pref. the evaluation device (A) is reset automatically after a preset time. USE/ADVANTAGE - For calibration of pressure-measuring cell. Reduced technical complexity.
Patent DE-4023947-A1 (DE)
Title: Medical radiation treatment appts. - has radiation sources distributed so that beams cross at tissue to be changed e.g. cancer, calculus
Inventor: DRESCHER RUEDIGER
IPC: A61B5/00
Filed: 1990-07-27
Abstract: At least two beams of high energy waves or particles are directed to meet or cross at the substance or tissue zone to be treated without surgery. A drum-like housing (2) surrounds the patient (1). The radiation sources (3,4), as well as X-ray source (5) and detectors (6) are distributed around the drum wall. Optical deflectors (7) can be in the form of rotary mirrors or polygonal reflectors. The radiastors and rotatable and movable in all directions (4). The beams meet at a point of intersection (8) in the patient's body. ADVANTAGE - Can apply strong radiation without causing damage to surrounding tissue.
Patent DE-4025104-A1 (DE)
Title: Oil pressure level display, esp. for internal combustion engine - has evaluation circuit computing desired pressure from engine revolution rate and oil temp.
Inventor: AKBARIAN TAGHI
IPC: F01M1/20
Filed: 1990-08-08
Abstract: The oil pressure display arrangement contains a press. sensor and a display device and/or a warning device. An evaluation unit connected to the sensor and display and/or warning device contains a computer which computes the desired oil press. from the revolution rate of the machine unit whose oil level is being monitored and the oil temp. The computer can contain a characteristic field enabling the desired oil press. to be derived from the revolution rate and oil temp. signals. ADVANTAGE - Is improved to give reliable indication of true oil press. at each operating point.
Patent DE-4025844-A1 (DE)
Title: Spin stabilised shell of simple fit on shell base - has guide band of pref. copper-zinc-aluminium shape memory alloy
Inventor: LANGENOHL ROLF
IPC: F42B14/02
Filed: 1990-08-16
Abstract: Shell (10) has a metallic guide band (12) and a shell casing (22) connected to the shell base (24). Guide band (12) consists of a metal with a shape memory effect, pref.  a Cu-Zn-Al shape memory alloy. Guide band (12) is applied to the shell base (24) and/or the shell casing (22) by cooling the shape memory metallic guide band (12) to at least -120 deg. C, expanding the guide band, pushing the guide band onto the casing (22) and/or base (24) and then heating to induce radial contraction by the memory effect. A shape memory metallic guide band (12.1, 12.2) may be fitted to each of the shell casings (22) and the shell base (24). Alternatively, a single guide band may overlap both the shell casing and the shell base. ADVANTAGE - Guide band is simple to fit on the shell base and the pref. thin-walled shell casing while preventing assembly and subsequent damage to the thin casing.
Patent DE-4028001-A1 (DE)
Title: TRimming chamber regulating valve for submersible vehicle -  has gas admitted into chamber via control element until required condition is obtained
IPC: G05D16/06
Filed: 1990-09-04
Abstract: A regulating valve is used to control the water in the trimming chamber of an underwater vehicle. The access to the trimming chamber is via a diaphragm element (18) that sits on a valve seat (16). Located above this is a second diaphragm (20) that defines a control chamber (22). Within the centre of the second diaphragm is an insert (24) which connects with a compressed gas container. Gas is admitted into the trimming chamber via a central element (28, 32) until the required conduction is obtained. ADVANTAGE - Provides automatic control of immersion depth.
Patent DE-4030807-A1 (DE)
Inventor: KUMAGAI TOSHIAKI
IPC: B60N2/08
Filed: 1990-09-28
Abstract: The seat slide device according to the invention comprises soundproof, vibrationproof member (32) and a surface layer member (33) provided on a floor panel (31) constituting a vehicle floor surface (30), a cutout portion of the soundproof and vibrationproof member (32) and the surface layer member (33) for exposing the floor panel (31) formed by linearly cutting out the soundproof and vibrationproof member (32), a linear lower rail (11) inserted through the linear cutout portion for direct securing thereof to the floor panel (31) and an upper rail (12) slidably received within the lower rail (11) and fixed to the seat (5).
Patent DE-4033823-A1 (DE)
Title: Additive mixt. for concrete layer - compacted by roller contg. hydrolysable tannin cpd.
Inventor: INOKAWA HISASHI
IPC: C04B24/18
Filed: 1990-10-24
Abstract: An additive mixt. for use in prodn. of concrete layers compacted by a roller contains a hydrolysable tannin cpd. as active component. Pref. the additive contains 1-99 wt.% of the tannin cpd., pref. gallotannin, corilagin, chebulagic acid or chebulinic acid, and 99-1% of a surfactant. A roller-compacted concrete layer is prepd. by forming a mixt. contg. a hydrolysable tannin cpd., cement, sand,  coarse aggregate and opt. other additives, applying the mixt.  to a road surface, and compressing and compacting with a roller. ADVANTAGE - The heat of hydration can be controlled, esp. in summer. Loss of strength, and cracking, of the concrete by evapn. of water due to the heat of hydration and the heat of the sun, are avoided. In an example, Mixts. contg., w.r.t. 1 cubic m, 297 kg of Portland cement, 108 kg of water, 875 kg of sand, and 1223 kg ofgravel, with (a) 0.25% of tannic acid or (b) no additive, were tested at 20 deg.C. Properties were: packing rate, initially, (a), (b) 97.0%; after 60 mins., (a) 94.5%, (b) 87.0%; strength, kN/square cm (formed after 60 mins.), 1 day, (a) 1.24, (b) 1.27; 7 days, (a) 2.94, (b) 2.65; 28 days, (a) 3.73, (b) 3.24.
Patent DE-4037969-A1 (DE)
Inventor: STIRNKORB ULRICH DIPL ING
IPC: F28F3/08
Filed: 1990-11-29
Abstract: A plate heat exchanger is specified which has a plurality of mutually aligned plates (1), which are provided by embossing with a profiled pattern and are clamped, alternately rotated by 180 DEG  with respect to one another, to form a stack with the profiled patterns, which are to be mutually aligned, of adjacent plates (1) touching, the plates (1) forming between themselves in an alternating fashion for a first medium and a second medium conducted essentially parallel thereto flow chambers which are surrounded by an at least partially detachable circumferential seal (16) and can be charged with the respective medium via mutually aligned feed and discharge openings (2, 3, 4, 5) formed by cutouts arranged in the corner regions of the plates. It is provided in this case that at least along a part of its longitudinal extent the detachable circumferential seal (16) is constructed as an at least two-tiered multiple seal (15, 16) from sealing profiles arranged at a distance from one another. 
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Patent DE-4038044-A1 (DE)
Inventor: WALTER MANFRED DR
IPC: C08J9/16
Filed: 1990-11-29
Abstract: Expandable styrene polymers of high expandability comprise a) a styrene polymer having a viscosity, measured in toluene, of from 55 to 80 [ml/g] and a melt flow index MFI (190 DEG  C., 3.8 kp) of from 7.5 to 30 [g/10 min], b) from 1 to 10% by weight, based on a), of a C3- to C6-hydrocarbon as blowing agent, and, if desired, c) conventional assistants in effective amounts.
Patent DE-4039530-A1 (DE)
Title: Prodn. of ceramic moulding - by heat treating finely dispersed powder mixt. of aluminium, alumina and silicon-contg. moulding in oxygen atmos.
Inventor: CLAUSSEN NILS PROF DR
IPC: C04B35/65
Filed: 1990-12-11
Abstract: mullite-contg. ceramic moulding (I) is produced by heat-treating a finely-dispersed powder mixt. of Al, Al203 and a Si-contg. moulding in an 02-atmos.
Patent DE-4104718-A1 (DE)
Title: Wound filter with interconnected electromagnetic coils - has rotary mounted coil former(s), with exception of input and output coil formers
Inventor: SHIMIZU SADAAKI
IPC: H01P7/00
Filed: 1991-02-15
Abstract: The filter has a number of electromagnetically interconnected spiral coils, arranged next to each other. Each spiral coil has an open end and an earthed end. At least one coilformer (8) is rotatably mounted, with the exception of coilformers (3), on which the input and the output side spiral coils are wound. Pref. over one end of the rotary coilformer is clamped a metal body, forming a part-wall round the coilformer. The earthed end of the spiral coil is coupled to the metal body, fitted on the lower surface of a housing or a metal base secured to the housing.  The rotary coilformer may have an unround region in plan view. The metal body may be also rotatable. USE/ADVANTAGE - For band width adjustment, with simple design and easy handling.
Patent DE-4104843-A1 (DE)
Title: Regulation system for clocked electronic power switch - with limitation of clock frequency for switching electronic switches
Inventor: WALLISCH ULRICH DIPL ING
IPC: H02M3/156
Filed: 1991-02-16
Abstract: The regulation system uses a current regulator (15) comparing the actual and required current values, to provide a clock frequency (fist) for ON/OFF of the electronic switches employed by the electronic power switch (1). A transformation element (18) limits the clock frequency, the max. clock frequency (ft. max) dependant on the required current (I soll). The actual clock frequency (fist) is compared with the max. clock frequency (ft. max) with a dead-time element (17) limiting the actual clock frequency (fist). ADVANTAGE - Reduced power losses.
Patent DE-4106077-A1 (DE)
Title: Housing for satellite low noise converter - comprises moulded grooved interlocking two-piece enclosure that is secured and sealed by bead of adhesive
Inventor: BODEWIG MANFRED
IPC: H05K7/14
Filed: 1991-02-27
Abstract: The two-piece housing (1) comprises an upper (4) and a lower (2) section, the latter featuring a groove (3) around the outer edge that mates with a similar ridge (5) extending from the upper section. The outer edge of the groove is serrated to increase the contact/adhesion area with the upper section ridge and features a step (6) that enables the adhesive that secures the two sections together to form a grouting barrier to resist the ingress of water. The low noise converter printed circuit board (11) is secured between upper and lower section internal ridges (10, 9 respectively), the former being separated from the outer wall by an airspace (12) that further reduces the possibility of water coming into contact with the converter. ADVANTAGE - Small, simply constructed housing that need not necessarily be circular in plan.
Patent DE-4106214-A1 (DE)
Title: Fluid filled antivibration mounting
Inventor: KATAGIRI KATSUHIKO
IPC: F16F13/14
Filed: 1991-02-27
Abstract: A fluid filled elastic anti-vibration mounting comprises an inner sleeve (12) and outer sleeve (14) flexibly connected by a generally annular elastic body (16) defining a chamber (44) which is changed by the vibration forces applied between the sleeves (12,14). The chamber is filled with two non-miscible fluids (36,38) having different specific wts. and different viscosities. Passages of orifice form (42) are formed in the chamber so the first low viscosity fluid is forced through it due to vibration forces. Shear interstices (44,46) form part of the fluid chamber such that the second high viscosity fluid (38) is forced through them by vibration forces but provokes resistance forces.
Patent DE-4108190-A1 (DE)
Title: Vehicle side door panel with impact protection - has operating lever mechanism for window panel attached to impact protection plate
Inventor: MATTHIAS KLAUS DIPL ING
IPC: E05F15/689
Filed: 1991-03-14
Abstract: The door panel has a shaft receiving the window glass (11), an operating lever mechanism (3..8) for the window and an impact protection plate (2). The lever mechanism (3..8) lies to the side of the window panel shaft and is attached to the impact protection plate (2) e.g. together with an electric operating drive plate (2) pref. the latter on the side of the window panel shaft facing the vehicle passenger compartment. The impact protection plate (2) is pref. formed by a number of individual components (2a, 2b, 2d, 2e) with their abutting edges overlaid by a cover strip (2c). ADVANTAGE - Prevents space being restricted within vehicle passenger space.
Patent DE-4108247-A1 (DE)
Title: Electrical strand conductor attachment to plate - inserting wire ends in formed aperture followed by pressing
Inventor: OEHLER STEPHAN
IPC: H01R4/64
Filed: 1991-03-14
Abstract: A firm mechanical connector between the strands (8) of an electrical wire and a metal connector plate is produced in a forming operation. The plate can be produced as a pressing with a centre section (12) that allows the ends of the wire to be inserted. The centre section is created by parallel slots in the plate. A firm connection is obtained by pressing the assembled section in a tool (13). A further version is obtained by forming inset sections on either side of the slots. ADVANTAGE - Provides secure retention.