baber/WOPTO huggingface dataset:
Patent DE-4016115-A1 (DE)
Title: Settling tank for waste water distribution - consists of three coaxial cylindrical chambers
Inventor: CHRIST HANS-WILHELM DIPL ING
IPC: E03F5/12
Filed: 1990-05-18
Abstract: The system is for the distribution or splitting of streams of liq., esp. streams of waste water, by means of settling tanks. The settling tank has a cylindrical outer wall (11) and at least  separate cylindrical chambers arranged co-axially inside this outer wall. The inner chamber (15) has a wall 813) which forms an overflow weir and has an inlet pipe (19) and an outlet pipe (20). The intermediate chamber (16) and the outer chamber (17) have no inlets  in their walls but each chamber has an outlet pipe. These outlets  are opposite to each other and at right angles to the inlet (19) and outlet pipe (20), of the outer chamber (17). USE - Drainage systems.
Patent DE-4022738-A1 (DE)
Inventor: SIEGFRIED HANS-GUENTHER
IPC: B01D29/48
Filed: 1990-07-17
Abstract: In the process for making a membrane (1) for microfiltration, ultrafiltration, pervaporation or reverse osmosis of suspensions, emulsions or for gas separation, a coiled, tube-shaped wire membrane (1) is used. A pressure is applied axially to the membrane windings (2), and, as required, the pressure is then removed and reversed to give tension, so that the pores (3) between the windings (2) have an effective filtering distance from 1 nm upwards. Substances which form a fine separation layer (4) can be introduced into the membrane pores (3) between the membrane windings (2). 
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Patent DE-4030730-A1 (DE)
Title: Mechanical movement conversion unit -  converts linear stroke movement into circulating radial movement using stroke curve component
Inventor: KELL GERHARD
IPC: F15B15/08
Filed: 1990-09-28
Abstract: The driving and supporting part of the movement unit comprises a stroke piston element (1) with a central accommodation (2) for it, connected to a socket-type cylindrical connecting rod (3) and a flange-type formation at one end by a screw union (22) and a further stronger flange component (20, 21), forming a mechanical unit. The free end (17) of the piston connecting rod (3) is secured by a bearing unit (15) both axially and radially by an arrestor groove and nose formation (14), together with a pin (16). The face-side bearing component (15) is necessary for axial securement of the radial bearing (23) of the rotating cylinder (10, 12), and for further functions, such as the radial support of the connecting rod. USE - In robot systems involved in material handling and modular assembly work.
Patent DE-4036077-A1 (DE)
Title: Bobbin yarn end location has surface bearing - and suction tubes to loosen and catch inner and external yarn ends on rotating bobbin
IPC: B65H67/08
Filed: 1990-11-13
Abstract: To locate and secure the end of yarn wound round a bobbin, whether the yarn end is within or on the outside of the bobbin, the bobbin is rotated in the unwinding direction while suction detaches the yarn end. The yarn end is loosened and unwound while being drawn through a suction funnel until a sensor registers a preset length and stops the bobbin rotation and suction action. The yarn end is held in the suction tube by the residual air present, or by a clamp, and cutter severs the yarn to the required length. The bobbin is removed for further use or storage, and the located yarn end at the same time is secured in a conveyor and stacking unit. ADVANTAGE - The method prepares bobbins of various types in random presentation, for onward delivery as fit for further working with loosened and caught wound yarn ends.
Patent DE-4040267-A1 (DE)
Inventor: MERTENS ARMIN
IPC: B66C23/78
Filed: 1990-12-17
Abstract: Fig. 1 shows a system frame 16 as can be erected on the body frame of a truck. The system frame 16, not described in detail, has at its ends telescopic boxes 3 in which telescopic supports 1, 2 are arranged in a longitudinally displaceable manner. Firmly attached to the ends of the telescopic supports 1, 2 are jacks 17 which can be lowered onto the ground when the telescopic supports are extended so that the military units fastened to the system supports, such as rocket launchers or signal devices, can also project far out to the side without putting the stability of the truck at risk. 
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Patent DE-4041219-A1 (DE)
Title: Ceiling formation method - lays blocks flat on concrete prefab. beams previously provided with decorative cladding
Inventor: VAJZOVIC SAFET
IPC: E04B5/26
Filed: 1990-12-21
Abstract: The method forms ceilings in buildings, using prefabricated concrete beams and whose steel reinforcement protrudes upwards. These are laid parallel to each other from wall to wall, after which roof blocks bridging the intervening gaps are laid on them. Concrete is then poured onto the beams to embed the reinforcement. The blocks (9) are laid flat on the beams (1), which are provided with decorative cladding before laying, typically formed by trough-type moulds in which they are cast. ADVANTAGE - Fast, simple and low cost.
Patent DE-4041544-A1 (DE)
Title: Electrostatic loudspeaker with stationary electrodes - has membrane threaded in zigzag path between parallel electrodes of alternating polarity
Inventor: JANSEN MICHAEL
IPC: H04R19/02
Filed: 1990-12-22
Abstract: The loudspeaker has a row of stationary electrodes (1) of alternating polarity, and a membrane (2) threaded between them via associated spacers (3), lying alternately on the opposite sides of the electrodes so that the membrane passes between the parallel opposite surfaces of each 2 adjacent electrodes. The membrane is pref. held via a tensioning device acting on it at either end, with each electrode pref. rectangular and made of metal, or a conductive plastics. ADVANTAGE - Large membrane surface in small dimensions, without partial oscillations.
Patent DE-4041845-A1 (DE)
Title: Measuring circuitry for low currents esp. for automatic test system - has operational amplifier supplying analogue multiplexer connected to measuring input directly at inverting input and via relay at non-inverting input
Inventor: RICHTER KLAUS
IPC: G01R19/00
Filed: 1990-12-24
Abstract: A drive amplifier (2) output is connected to the measuring input (4) via a relay (1), its input providing the reference voltage input (3). An integration capacitor (5) is connected to the inverting input of an operational amplifier (6), its other terminal being connected also to the inverting input of another operational amplifier (7) as well as to the output of the latter. The non-inverting input of this second operational amplifier is connected to one terminal of another capacitor (12) whose other terminal is earthed as well as to the multiplexer (8) output. The control inputs (10, 11) of the analogue multiplexer also represent the control inputs of the circuitry. USE/ADVANTAGE - Measuring currents in nano and pico ampere range. Short measuring time at high resolution.
Patent DE-4042175-A1 (DE)
Title: Wheeled support for suitcase - has fixed axles and press-fitting wheels driven by worm-gear and electromotor powered by sec. cell battery
Inventor: THIERAUF ANDREAS
IPC: A45C5/14
Filed: 1990-12-29
Abstract: The suitcase is fitted with fixed axles with open ends. The wheels are provided with stub axles which are press fitted into the hollow axle ends to secure with sprung ratchets. When not required the wheels are removed by axial force and stored in a small bag. This allows the suitcase to be stored in a min. of space. The fixed axles are secured to the suitcase via mounting tags (14). A centrally positioned worm gear (19) on the axle is driven by a pinion (20) on a small electric motor mounted inside the suitcase. The servo drive powers the rear axle while the front wheels can be steered. The battery is accessed via a hinged flap. ADVANTAGE - Compact storage, simple servo fitting.
Patent DE-4100545-A1 (DE)
Title: Snow plough unit - has scraper blade with swivelling device to enable obstructions to be avoided
Inventor: NUSSER JOSEF
IPC: E01H5/06
Filed: 1991-01-10
Abstract: A snow plough has a scraper blade (12) attached to a carrier frame ont he front of a vehicle. The blade (12) is tilted by a balancing device (A) about an axis (S). The scraper edge (21) cannot be damaged by obstructions (15) because it is able to swing upwards and backwards to avoid them. USE/ADVANTAGE - The machine is lighter and has a wider clearing spread.
Patent DE-4100790-A1 (DE)
Title: Monitoring power transistor made conductive by rectangular signal - setting memory element into state indicating defect according to voltage level during time window
Inventor: KIESELSTEIN DIRK
IPC: H03K17/082
Filed: 1991-01-12
Abstract: The power transistor, rendered conductive by a rectangular energising pulse, is monitored by bringing a memory element into a state which indicates a fault, when the end stage output voltage has not attained a level for normal operation during a specified time period. The period contains at least a part of a time window, starting at a preset time after a flank of the excitation pulses, and ends with the following pulse flank. Pref. the time window may start at a preset time of the energising pulse start. The energising pulse is interrupted on the memory element adjustment. A time element (7) generates the time window, with its input coupled to a feed line for the energising pulse, while its output is linked to a logic circuit (9) input. ADVANTAGE - Simple monitoring process without narrowly tolerated components.
Patent DE-4101839-A1 (DE)
Title: Engine with rotary cylinder block - has cylinders in successive positions round axis of rotation
Inventor: KOLB HORST
IPC: F02B57/10
Filed: 1991-01-23
Abstract: The IC engine has two or more pistons (6) working in cylinders (2) and with protruding piston rods (10). The cylinders form a block (3) rotating on a first axis (4), extending radially from it. Roller components (15) on the piston rod ends work in a circular guide (17) centred on a second axis (M) parallel to the first. The distance between the axes is equal to half the piston stroke. The cylinders are in successive positions round the first axis. They can comprise one or more each working and auxiliary cylinders. USE/ADVANTAGE - Simple, efficient, and quiet running rotary engine.
Patent DE-4110254-A1 (DE)
Title: Control circuit for quietly operating hydraulic solenoid valve - controls interruption of drive current near valve closing point
Inventor: MAISCH WOLFGANG DR ING
IPC: H01F7/18
Filed: 1991-03-28
Abstract: The drive current to the solenoid (2) valve is interrupted for a small, controlled time just prior to the valve closing. This slows the valve element sufficiently to reduce the valve operating noise. The exact point for the control pulse can be determined from the reverse e.m.t. generated in the coil. The changes in operating speed, due to temp. variations, are measured. A compensating control is applied to ensure the timing and duration of the control pulses provide optimum modulation of the valve action. USE/ADVANTAGE - Quiet valve operation in ABS and ASR systems.
Patent DE-4116140-A1 (DE)
Title: Vehicle trailer carrying roll=on=roll=off ship containers - has lever lifting units controlled by counter-pressure mechanism
Inventor: BOECK ROBERT
IPC: B62D53/06
Filed: 1991-05-17
Abstract: The articulated trailer (20), can be raised and lowered at the vehicle connection end (22), with lever lifting and lowering units (23 24) for the carrier (21) with feet (58) which support the goods being transported. A counter pressure mechanism (36 60) attached to an arm (38) moveable about an axis (40) contacts the upper surface of the carrier (21) such that under all loading conditions the lever lifting units can be actuated. USE/ADVANTAGE - Reliable system for unloading large containers from articulated trailers onto the decks of Ro-ro ships.
Patent DE-4116877-A1 (DE)
Title: Gas-generating charge prodn. used for airbags - by dry mixing nitrate, opt. perchlorate and azide, adding binder to make into a paste, granulating
Inventor: KLOEBER MARTIN
IPC: C06D5/06
Filed: 1991-05-23
Abstract: In the prodn. of a gas-generating charge based on azide for an airbag, 20-60 (wt.%) nitrate and opt. perchlorate and 40-80% azide, all with particle size less than 80 microns, are dry mixed; the mixt. is made into a paste by adding a binder which is readily volatile on drying; the mixt. is granulated; dried and opt. sifted to remove a very fine fraction; and 80-98% of this mixt. are mixed with 2-20% of an ignition mixt., which burns faster. If a mixt. is used, this consists of 10-40% perchlorate and 60-90% nitrate. Pref. KNO3,NaNO3 or NH4NO3 or a mixt. of these is used. The ignition mixt. consists of 28% amorphous B, 67% KNO3 (finer than 80 microns) and 5% binder; or 35-65% perchlorate, 65-35% Zr, Ti, Al and/or Mg and 2-10% binder. USE/ADVANTAGE - The charge can be made cheaply and used in thin foil or pressed form. On ignition, it inflates the airbag within ca. 20 ms. The combustion gas is not toxic.
Patent DE-4127823-A1 (DE)
Title: Comminuted cigarette filter waste - used as adsorbent for removing liq. and gaseous pollutants from water, air and soil
Inventor: ORTLEPP WOLFGANG DIPL CHEM DR
IPC: C02F1/28
Filed: 1991-09-02
Abstract: An adsorbent, prepd. from waste material, for purifying air, water and/or soil is made from cigarette filters (comminuted and processed to a pad material) and/or their solid starting and/or intermediate materials, produced as waste during mfr. of filter cigarettes. The material is bound with a readily water-soluble binder and/or with a binder readily soluble in aprotic chemical solvents and then formed into shape opt. with compression. USE/ADVANTAGE - The material is esp. used to remove gaseous and liq. chemical pollutants, e.g. oil, petrol and other hydrocarbons from water, soil and waste gas streams. It is porous, non-flammable, resistant to rotting and insoluble in numerous solvents. The starting materials are waste products usually difficult to dispose o
Patent DE-4128861-A1 (DE)
Title: Safety circuit for separate or coupled electrical drives such as printing units - has relay circuits with coupled control lines that connect to switching circuitry
Inventor: SCHOEBEL DIETER
IPC: B41F33/12
Filed: 1991-08-30
Abstract: An interlock circuit provides safe operation of a pair of electrical units, such as the printing stages of rotary print machines. The units may selectively be operated as separate units or in a coupled mode. The same circuit is used for each drive and has a control line (3) coupled to the contact (1k4.1) of a coupling relay (1k4). The control lines of the two circuits are connected together. The circuits have safety stages (1) that consist of the contacts (151.1,151.2,151.3) of a coupling switch (151). ADVANTAGE - Provides safe operation for two separate or coupled units.
Patent DE-4133168-A1 (DE)
Title: Micro-cosmic fermentation using immobilised microorganism suspension in stirred reactor - in which nutrition medium is subjected to continuous catalysis, used e.g. for prodn. of carbon di:oxide and hydrogen@ from carbon mon:oxide and water
Inventor: GERHARDT MATTHIAS
IPC: C12P3/00
Filed: 1991-10-07
Abstract: A process for microcosmic fermentation comprises adding to a stirred vessel, a cascade of stirred vessel or filled columns an immobilised microorganism suspension, opt. on a carrier and/or a trucklebody, to which a nutrition medium is added all at once, subjecting the suspension to continuous catalysis by feeding in a solid, liq. or gaseous material which does not contain the substrate components and leading away the exchange prod. contained in the gas phase at 10-105 deg.C. in pH range 2.5-10.5 and pressure 0.8-100 bar, without exchange or sepn. of the liq. phase. The microorganism suspension is pref. an anaerobic, thermophilic and/or lithotrophic microoganism straw opt. with a methanogenic baccteria strain or with a methanoganic mixed population. USE/ADVANTAGE - The process is used in the catalysis of reactions of gaseous starting materials and gaseous reaction prods.. Catalysis is restructed to the main reaction, with self-regeneration of the catalyst.
Patent DE-4133349-A1 (DE)
Title: Drive for cutting and forming machine tools - has additional flywheel mass, rotating at fast and mainly constant speed
Inventor: GOELZ ROLF
IPC: F16H47/04
Filed: 1991-10-08
Abstract: The drive (1) for a machine tool, consists of a first electric drive motor (2) with constant RPM, and an infinitely variable change speed gear, esp. a hydrostatic transmission. This has a variable transmission ratio, and is connected to the motor via a first connection branch (5). A differential (11) has two inputs (12,13) and one output (14). One input is in drive connection with the take-off of the differential, while the other input is connected to the motor via a second connection branch (15). ADVANTAGE - Improved maintenance of drive torus or RPM/speed.
Patent DE-4139985-A1 (DE)
Title: Device for raising and lowering automobile window panes - consists of rope or strip pulley system composed at least partly of at least 50 per cent amorphous metal alloy
IPC: C22C45/02
Filed: 1991-12-04
Abstract: A lifting device for raising and lowering automobile window panes consists of a drive arrangement, a catch attached to the window pane, and ropes or straps which drive the closed pulley system. The novelty is that at least part of the pulley system is composed completely or partly from at least one semi-amorphous metal alloy. The metal alloy is at least 50% amorphous and has the compsn. FeaNibCrcCdXeYf, where X = Mo and/or Cu and/or W, Y = P and/or B and/or Si (as vitrifiers), a+b = 50-80 at.% and a is greater than b, c = 0-10 at.%, d = 03-20 at.%, e = 0-8 at.%, and f = 02-22 at.%. The alloy also contains up to 15 at.% Co. The pulley system is composed, at least in part, of flat strips of material with a width to thickness ratio of 40:1 to 600:1, and thickness 0.04-0.25 mm, pref. 0.05-0.15 mm, said strips being produced by the smelting-spinning process and having perforations. ADVANTAGE - The pulley system is run over smaller guide rollers and rope drums or strips spindles, giving rise to above average strength, wear- and corrosion-resistance.
Patent DE-4200198-A1 (DE)
Title: Magnetic recording medium based on iron@ powder contg. cobalt - concentrated at surface of particles for good dispersibility, squareness ratio and alignment
Inventor: TAMAI KIMINORI
IPC: C09D127/04
Filed: 1992-01-07
Abstract: Magnetic recording medium has a nonmagnetic substrate and a magnetic coat contg. Fe-based metal powder (I) contg. Co, dispersed in a binder. The novelty is that the (I) particles have a higher Co concn. at the surface than inside. Pref. (I) also contains Ba. (I) is prepd. from hydrated Fe oxide (II) contg. Ba by depositing Co on the surface and redn. in reducing atmos. (I) is then dispersed in the binder and used for coating the base. USE/ADVANTAGE - (I) has excellent dispersibility. When used in tape form, the medium has a high Br/Bm ratio (squareness ratio) and good alignment. In an example, a soln. of 100g FeCl2.4H2O in 20l water at 45 deg. C was treated with a soln. of (A) 4g BaCl2.2H2O, (B) 46g ZnCl2, (C) 1.65g CrCl2, (D) 1.61g MnCl2 in 100 ml water, (B, C, D) being controls. After stirring for 30 min., it was treated slowly with a soln. of 300g NaOH in 1000ml water at 45 deg. C and stirred for 60 min. The soln was heated to 70 deg. C and stirred for 6h whilst introducing 100 l/min air, then allowed to stand and cool. The prod. was washed with water, filtered and dried 24h at 60 deg. C giving (II). 100g (II) were mixed with 6l water and treated with 1l Na2SiO3 soln. in an amt. corresp. to 3 wt. % Si w.r.t. Fe and with 85ml 1M CaCl2 soln. After stirring, the prod. was filtered, washed and dried. 50g of the resultant acicular alpha-FeOOH were reduced 6h at 450 deg. C in 11 l/min H2, then cooled to room temp., immersed in toluene for 10 min whilst injecting air and dreid in air. 100 (wt) pts fo the acicular metal powder were mixed with 10 pts. vinyl chloride/vinyl acetate/vinyl alcohol copolymer, 10 pts. polyurethane resin, 5 pts. polyisocyanate cpd. with low mol. wt., 2 pts. stearic acid, 2 pts. lecithin, 5 pts. Al2O3, 50 pts. toluene, 50 pts. MEK and 50 pts. MIBK. The mixt was applied to a polyester film base in a thickness of 10 microns, aligned magnetically, calendered and cured, giving a coating final thickness of 4.0 microns. The medium was slit to 8mm tape and tested.
Patent DE-4200908-A1 (DE)
Inventor: SPINDLER GERHARD
IPC: F16H63/30
Filed: 1992-01-16
Abstract: An automatic gearbox for motor vehicles is fitted with planet gears (2, 3), multiple disc clutches (18, 19) and disc brakes (16, 17) actuated by brake pistons (9), where the multiple disc clutches and disc brakes are arranged around the planet gears. In at least one disc brake (16) a single disc is arranged between two opposite ones (5, 6) as a lining disc (4). Between the two discs (5, 6) enclosing the lining disc (4) between them is clamped a spring-like device (7) which presses the two discs (5, 6) against stops (8) counter to the closing direction of the brake piston (9).
Patent DE-4204787-A1 (DE)
Title: Nitrogen oxide(s) redn. during solid fuel combustion - includes injecting crude tar into hot combustion gas
Inventor: SPLIETHOFF HEINZ PROF DR ING
IPC: F23C6/04
Filed: 1992-02-18
Abstract: In NOx emission redn. during solid fuel (esp. coal) combustion by adding a redn. fuel to the combustion gases of a firing unit combustion zone and passing the combustion gases through a redn. zone under substoichiometric conditions, the novelty is that crude tar is injected as redn. fuel into the hot combustion gas stream. The crude tar may be injected as a finely atomised liq. or pref. as a vapour. The tar is pref. injected into a combustion gas region at above 1000 deg.C or into the combustion zone, the heat required for pre gasification of the tar being extracted from the combustion zone. The combustion gases may flow through two successive redn. zones (6,9), the first (6) being operated substoichiometrically at above 1000 deg.C in the presence of crude tar (5) and the second (9) being operated substoichiometrically in the presence of NOx reducing agents (3,8) at 950-1000 deg.C. ADVANTAGE - Compared with externally produced gas or gas recovered from a degassing device, preceding e.g. a coal fired power station, the crude tar can be more easily and compactly stored and its prodn. can be easily made independent of its use e.g. in power station firing.
Patent DE-4205075-A1 (DE)
Title: Installation for opening and transporting sacks and bags of various materials - uses vacuum and/or adhesive to hold sack whilst drawing apart the two sides for opening.
IPC: B65B43/30
Filed: 1992-02-20
Abstract: As an opening is formed in the sack a movable mouthpiece projects into same, so as to hold the sack in a definite, open position. The topmost sack can be removed from a stack by pressing adhesive faces onto the top surface.  The opening system can comprise one or more rollers with adhesive strips mounted on a shaft which roll along so that the adhesive side points upwards.Vacuum can be used in operation. USE/ADVANTAGE - For paper,plastics,textile etc.sacks and bags,with reliable operation.
Patent DE-4205888-A1 (DE)
Title: IC engine cylinder-selective knock control - retarding ignition when difference between actual phase and predetermined constant value departs from within set range
Inventor: CZUB EKKHARDT DIPL ING
IPC: F02P5/152
Filed: 1992-02-26
Abstract: The method involves comparing, for a particular cylinder, the depth (Rh1) below a prescribed horizontal characteristic ( alpha v) with a coupling range (KB) which varies according to the average for the other cylinders plus a fixed deviation (plus or minus A), as seen on a plot of ignition advance ( alpha z) against time (t). When the depth varies beyond this range an alternative is substd. which is greater or less by the amt. of the deviation, so that the ignition is suitably retarded. This keeps the engine working in a safe range with knock control in a substantially optimal range. ADVANTAGE - Ignition phase of each cylinder affected by disturbances is matched optimally to need for knock suppression.