baber/WOPTO huggingface dataset:
Patent DE-3829176-A1 (DE)
Title: Disc thickener
Inventor: KRIEGER UWE DIPL ING DR
IPC: B01D33/74
Filed: 1988-08-29
Abstract: In a disc thickener serving for dewatering of suspensions having axially spaced suspension chambers and filtrate chambers which are open to a stationary trough and are separated from each other by rotatable screen filter discs, a vacuum is exerted on the filtrate chambers so that the throughput of the disc thickener is increased and the dewatering is improved and accelerated. For this purpose, the filtrate chambers are subdivided by radially and axially extending transverse walls into individual filtrate chamber sections distributed about the periphery which are preferably sealed off from each other. When, on rotation of the screen filter discs and thus also the filtrate chamber sections, the latter are subjected to the flow with the bottom filtrate outlet of the disc thickener, they are simultaneously subjected to vacuum, as a result of which the dewatering via the screen filter discs is accelerated. From this results a high throughput, a lower material density in the filtrate and lower specific investment costs for the same throughput or the same density of material in the filtrate. By means of subdivision of the filtrate outlets about the periphery, filtrate separation is possible.
Patent DE-3829180-A1 (DE)
Inventor: FASTH ANDERS DR
IPC: A61P37/00
Filed: 1988-08-29
Abstract: The invention relates to a drug containing interferon gamma (IFN gamma ) for the treatment and prevention of diseases caused by primary immunodeficiency. The drug is particularly directed against diseases which may occur regularly or sporadically because of a "severe combined immunodeficiency (SCID)".
Patent DE-3831996-A1 (DE)
Title: Process for producing bands of plastic which can recover their shape under heat
Inventor: MARX KARL-HEINZ
IPC: B29C61/06
Filed: 1988-09-21
Abstract: In a process for producing a band which can recover its shape under heat for wrapping around, for example, junctions of electric cables or conduit pipes, a multiplicity of prestretched individual filaments of crosslinked plastic running parallel to one another and next to one another in a plane are laminated with bands of thermoplastic material in a continuous operation. Between the individual filaments and at least one of the bands there is arranged a layer of threads of tear-resistant material, for example a cotton fabric.
Patent DE-3832651-A1 (DE)
Title: Lining of the working container of high-performance tumbling machines
Inventor: HEIBERGER ERNST
IPC: B24B31/12
Filed: 1988-09-26
Abstract: For the lining of the working containers of high-performance tumbling machines, such as round-trough, long-trough, tube or drum vibrators and centrifugal machines, shaped bodies made of a ceramic material with abrading properties are used.
Patent DE-3832738-A1 (DE)
Title: Process for the preparation of photosensitive, electroconductive, film-forming polyacetylene
Inventor: NAARMANN HERBERT DR
IPC: C08J7/044
Filed: 1988-09-27
Abstract: The invention relates to a process for the preparation of photosensitive, electroconductive, film-forming polyacetylene by doping film-forming polyacetylene which portion of sp<3>-hybridised carbon atoms in the polyacetylene is less than 0.5 mol %, where the film-forming polyacetylene is coated with a photosensitive dope (dopant) in the absence of light, and this coating is then exposed through a mask to effect the doping.
Patent DE-3834299-A1 (DE)
Inventor: FROMMELD HANS-DIETER DIPL CHEM
IPC: C09B67/30
Filed: 1988-10-08
Abstract: A process is proposed for stabilising a leuco dye solution in an organic solvent against atmospheric oxidation in which a compound which contains at least one 2,2,6,6-tetraalkylpiperidine, 2,2-dialkylpiperidine-6-spirocycloalkane or piperidine- 2,6-dispirocycloalkane group is added to the solution. The process is used, in particular, for stabilising photoresist solutions which contain, in addition to the leuco dye, polymerisable compounds and photoinitiators, in particular radiation-sensitive trihalomethyl compounds.
Patent DE-3834884-A1 (DE)
Title: Medicinal paste
Inventor: HOFEDITZ WOLFGANG DR
IPC: A61L24/04
Filed: 1988-10-13
Abstract: Medicinal paste containing   a) a substance or mixture of substances from the group of polyvinyl esters, polyvinyl ethers, polyvinylpyrrolidone, copolymers of vinylpyrrolidone and at least one vinyl ether and/or at least one vinyl ester, where the ester and/or ether functionalities in the homo- and/or copolymers can be unhydrolysed or partly hydrolysed, optionally mixed with other water-soluble and/or water-insoluble polymers,   b) a gel-forming component,   c) a solvent and d) optionally ancillary substances and additives.
Patent DE-3838103-A1 (DE)
Title: Digitally controllable video amplifier
Inventor: FRANK DIETER DIPL ING
IPC: H04N5/14
Filed: 1988-11-10
Abstract: This amplifier consists of an operational amplifier (1), at the non-inverting input of which the video signal to be amplified is present and the output (3) of which is connected to the inverting input via a voltage divider (4, 5). To adjust the gain of the operational amplifier (1), resistors (71 to 7n), which can be individually added are arranged in parallel with the resistor (5) in a number of parallel branches, the resistors being added or disconnected with the aid of series-connected field-effect transistors (81 to 8n). To reduce the drain-substrate capacitance when FETs (8) are cut off, the video signal is superimposed on the substrate voltage. <IMAGE>
Patent DE-3838977-A1 (DE)
Title: Stopping distance speedometer
Inventor: HAEUSEL MANFRED
IPC: B60K35/00
Filed: 1988-11-18
Abstract: Object of the unit To simplify or rather to permit driving within the stopping distance with reference to a free and clearly visible distance.  Method prescribed in the Federal Republic of Germany Driving with due regard to the stopping distance which according to the rule of thumb is calculated or derived from the speed of travel, (whilst observing certain top speeds).  Solution <<Stopping distance speedometer>> - according to patent claim, see number 1. Checking of distance and visibility by means of the guide posts erected on many roads.  Sphere of application Vehicles in public road transport (in trucks, road trains, buses etc. load-dependent ranges would also have to be provided for).
Patent DE-3839661-A1 (DE)
Title: Rotational-speed controller for electric motors
Inventor: HENSEL NORBERT
IPC: H01H13/16
Filed: 1988-11-24
Abstract: The invention relates to a rotational-speed controller for electric motors, which is preferably used in a dental machine. According to the invention, the working surface on the housing upper part is divided into a plurality of sensor zones. The working surface consists of a rubber plate which is provided with studs on the underside, the number of which is equal to the number of fields of a membrane-switch keyboard. The fields are associated in OR function and they are connected line by line, each with a resistor in series. Each sensor zone is linked with a line of studs and a line of fields.
Patent DE-3905104-A1 (DE)
Title: Liquid pump
Inventor: MOEHLENBECK KLAUS-JUERGEN DIPL
IPC: F04B9/10
Filed: 1989-02-20
Abstract: The invention relates to a liquid pump in which the major portion of the drive energy is provided from the intrinsic delivery energy. This is achieved by recovering the pressure potential during decompression.
Patent DE-3907807-A1 (DE)
Title: Heel for footwear
Inventor: SIEBERT KARL
IPC: A43B21/39
Filed: 1989-03-10
Abstract: The invention relates to a heel for footwear, which is combined from a block heel and an outsole and in which the connection between the block heel and the outsole is made either by a screw connection or by a sliding connection but also by a connection which includes both a screw connection and a dovetail-like sliding connection.
Patent DE-3909356-A1 (DE)
Inventor: DUEBAL HANS-ROLF DR
IPC: C09K19/58
Filed: 1989-03-22
Abstract: PCT No. PCT/EP90/00458 Sec. 371 Date Nov. 6, 1991 Sec. 102(e) Date Nov. 6, 1991 PCT Filed Mar. 21, 1990 PCT Pub. No. WO90/11336 PCT Pub. Date Oct. 4, 1990.The novel liquid-crystalline mixtures (in the case of ferroelectric behavior they additionally contain an optically active compound as dope) are based on at least two mixture components of the general formula (I) and at least one carboxylate of the general formula (II), (III) or (IV).  (* CHEMICAL STRUCTURE *) (I)  (* CHEMICAL STRUCTURE *) (II) X = O or a single bond  (* CHEMICAL STRUCTURE *) (III)  (* CHEMICAL STRUCTURE *) (IV) The mixtures have favorable properties for use in electrooptical display elements, such as high contrast, low melting point and short switching times.
Patent DE-3910858-A1 (DE)
Title: Circuit arrangement for door intercom and door-opening systems
Inventor: MANSEL WERNER
IPC: H04M11/02
Filed: 1989-04-04
Abstract: A circuit arrangement for combined door intercom and door-opening systems with domestic telephones and at least one door station is intended to be designed in a particularly functionally reliable manner at low line cost. For this purpose, it is proposed to route a wire common to the domestic telephones via an optocoupler which changes over the common wire from alternating to direct current supply at the end of a call.
Patent DE-3911491-A1 (DE)
Inventor: HOFF WALTER
IPC: E04G17/065
Filed: 1989-04-08
Abstract: In an arrangement used while erecting concrete shutterings, there are provided spacers (1) which are produced as ready-to-use units in each case from an anchor bar (2) and two supporting parts (3), made of corrosion-resistant material or provided with such a material, at the ends of the anchor bar (2), the supporting parts (3) being firmly connected to the anchor bar (2). The supporting parts (3) possess screw-in threads (7), ending in the manner of blind holes, for tension bars (17). The screw-in threads (7) and the corresponding threads on the tension bars (17) advantageously have a special design with regard to their profile. <IMAGE>
Patent DE-3912344-A1 (DE)
Inventor: ULRICH ARMANDO
IPC: B01F3/08
Filed: 1989-04-14
Abstract: Method and apparatus for producing a water-in-fuel-emulsion and emulsifier-free water-in-fuel-emulsion. The apparatus for generating a fuel water emulsion for the operation of an injection pump, particularly that of a diesel motor, comprising a rotationally symmetric vortex chamber (1) with a tangential inlet and a tapering axial outlet. In order to generate a fine homogeneous emulsion in colloidal state, having a size of the suspended water droplets of 1000 nm or less, the axial end portion of the vortex chamber (1) facing away from the outlet is surrounded by a ring channel (7) running coaxially to the vortex chamber (1), the ring channel (7) being connected to the vortex chamber (1) via inlet slots (9) which are tangentially aligned to it and in which a fuel inlet channel (8) tangentially ends. An electromagnetically controlled water injection nozzle (10) leads into the end portion of the vortex chamber (1) at the inlet side thereof. The outlet (2) of the vortex chamber (1) opens via an enlargement (3) into a suction chamber (4) of a radial wheel (5) which is arranged in a pump chamber (12) having an outlet channel (13) in the area of the circumference of the radial wheel (5) to which a forward conduit leading to the injection pump and a recirculation conduit leading to an emulsion inlet channel (15) are connectable which also ends tangentially into the ring channel (7). An intake channel (16), to which a return conduit coming from the injection pump is connectable, leads into the suction chamber (4) of the radial wheel (5).
Patent DE-3914069-A1 (DE)
Title: Circuit for controlling voltage supply unit - supplies pulse switches of both regulators with control pulses and for PWM of control pulses depending on comparator unit
Inventor: SIGLOCH RAINER DIPL ING
IPC: H02M3/158
Filed: 1989-04-28
Abstract: The output voltage of the voltage supply unit is compared with a reference voltage in the comparator circuit, and a deviation causes a corresp. alteration in the supply voltage. The pulse width modulator is assigned common to the two regulators, which has two comparators (K1,K2), which from two equal periodic voltages from a suitable generator (SG), nevertheless delivered counter phase to each other, alternatively form output pulses, and their width adjusted depending on the level of an adjusting voltage, supplied to it depending on the output signal of the regulating (comparator) circuit. The output pulses are supplied to the pulse switch of the buck regulator as control pulses across an OR element (OG1) and for forming control pulses for the pulse switch a boost control circuit (S1,S2) is provided.  This identifies the comparator output pulse, the width of which exceeds half the duration period of the periodic voltages and pulse parts, which stand above and beyond the half period duration of the periodic voltage at the outputs of the comparators (K1, K2) are halved in their duration and given as control pulses. USE/ADVANTAGE - Control )circuit for combined buck and boost regulator. With smallest possible cost of components gives stepless transition from buck to boost operation and vice versa. Gives exact regulation of output voltage across working range of both regulators.
Patent DE-3918106-A1 (DE)
Title: Device for adjusting the bearing pressure of a windscreen wiper
Inventor: SHIRATO MASAYOSHI
IPC: B60S1/34
Filed: 1989-06-02
Abstract: A description is given of a device for adjusting the bearing force of a windscreen wiper, comprising a spring, an operating lever which is connected to the lower end of the spring, an arm head for the pivotable mounting of the upper end of this lever, an arm element which is provided at the lower end of the lever, and a cam element. The arm element is supported on the cam element which can be rotated by a motor in order to change the adjustment of the direction of action of the spring against the window surface. The cam element has a cam surface which is designed in such a manner that the bearing position of the arm element is changed, by rotating the cam element, from a section of large diameter via a stepped section to a section of small diameter.
Patent DE-3918400-A1 (DE)
Title: Rotary hydraulic actuator especially for robot application - has reciprocating piston with pin engaging helical cam slot in coaxial drive shaft
Inventor: MAYER HEINZ
IPC: F15B15/08
Filed: 1989-06-06
Abstract: Viewed in longitudinal section, the hydraulic actuator has a stationary cylindrical housing (11) with an end flange (12) and an internal chamber (13). The rotatable hollow shaft (17) of the actuator is supported in bearings (15,16).  Sliding on the shaft is an annular piston (20) which is prevented from rotating by a ball (21) running in slots (22,23) in the piston and housing. The piston has an opening (24) through which a roller pin (25) protrudes to engage in a helical slot (26), so that when the piston moves up and down the shaft (17) rotates to and fro. Secured to the shaft and rotating with it is the cup-shaped member (27). Oil under pressure is admitted to both sides of the piston without the need for external flexible piping by means of the oil passage (28,29,34). USE/ADVANTAGE - Compact design is especially suited to robot application. Powerful torque can be delivered. Component parts can be simply produced on a lathe.
Patent DE-3925566-A1 (DE)
Title: Display device with wall and lamellar strips - has extra hooks engaging in adjoining strip for greater security
IPC: A47F5/08
Filed: 1989-08-02
Abstract: The presentation device comprises a presentation wall with strip-like slats (6) having rear cut sections (9). A hanger with a support arm (4) is fixable on the wall and has hooks which are insertable into the rear sections. The support arm has an additional hook (13) which is insertable in an adjoining rear cut section (9) of one of the slats (6). The two hooks (12, 13) can face each other or face away from each other. USE/ADVANTAGE - A more secure fixing of the hanger avoiding premature loosening.
Patent DE-3927065-A1 (DE)
Title: Removing pressed fodder from silo - involves swinging and luffing jib with bladed roller feeding outer drums housed in rigid box
Inventor: ASSFALG ALOIS
IPC: A01F25/20
Filed: 1989-08-16
Abstract: The machine for removing pressed fodder from a silo has a swinging and luffing jib with a box like housing (1) at its free end. The housing (1) contains a number of revolving drums equipped with projecting cutters (2) at right angles to the long axis of the box (1), and above these is a single roller (5) with a number of radially projecting blades (85), pivoted at either end of the box (1) and covered by a hood (4). USE/ADVANTAGE - A compact unit which works with minimal interference with the general content of the silo.
Patent DE-3939779-A1 (DE)
Title: Heat-energy conversion process - uses fluids with low boiling point as working medium
Inventor: HAEBERLE WILHELM
IPC: F01K25/02
Filed: 1989-12-01
Abstract: The process is for the conversion of heat energy into mechanical energy. Two masses of a fluid working medium are spearated by the pistons (1, 2) of a cold (3) and a warm (4) double-acting cylinder, and are transported by these pistons, alternately, and oppositely from the cold into the warm cylinder, and vice versa. The cold piston (1) moves phase-shifted before the warm piston. The working pressure is built-up between them, and the pressure at the back of the pistons is reduced. The cylinder capacities are arranged for the same masses, but different volumes, due to working medium heating. USE - Heat engine using small temp difference.
Patent DE-3940393-A1 (DE)
Title: Lock with two sliding bolts - has pawls to hold bolts in retracted position and in locking position
Inventor: KRACHTEN THEODOR
IPC: E05B15/10
Filed: 1989-12-06
Abstract: The lock for a door has two sliding bolts (2c, 2d) connected to a common locking member (2). The bolts are locked in their retracted positions by spring-loaded pawls (19a, 19b). The  bolts (2c, 2d) are also locked in their extended positions by a recess (13b) in an arm (2f) of the locking member (2). This recess (13b) engages a lug attached to the end of a leaf spring. When this spring is disengaged the bolts (2c, 2d) can be retracted by rotating the lever (7) by means of the door handle.  This lever (7) acts  on the upper arm (2e) of the locking member (2) through the intermediate lever (7). USE - Locks for doors in building.
Patent DE-3940843-A1 (DE)
Title: Explosion-preventing system for fuel tank of armoured vehicle - has heat sensor responding to external flames and closing valve in ventilation line
Inventor: STENGER REINHARD DIPL ING
IPC: B60K15/035
Filed: 1989-12-11
Abstract: The system has a heat sensor (11) opening and closing a valve (4). The valve is a 3/2-way type and is connected to a spring-loaded non-return valve (6) in the line (2) between the fuel tank (1) and the 3/2 valve (5). The sensor controls the 3/2 valve so that if the vehicle is attacked with burning material (10), over-pressure in the tank can be reduced via the non-return valve whilst the closed 3/2 valve (5) prevents flames entering the ventilation line (2) to the tank. The sensor is connected via an amplifier (7) to the  valve. The sensor measures the temperature at the skin  of the vehicle lie at its armour plating in the region where the fuel tanks ventilation line emerges through the skin. USE/ADVANTAGE - For protecting fuel tank of armoured vehicle from flames impinging on simple armour plating near tank.
Patent DE-3942444-A1 (DE)
Title: Sleeve-shaped cap for writing implement - has centre seal insert with perforated circular wall, coupled to neck
Inventor: HANKE ULRICH
IPC: B43K23/12
Filed: 1989-12-22
Abstract: The writing implement has an inner part (5) with a cylindrical bore which is a close fit over tghe tip of the pen etc. The inner part is connected to a cylindrical skirt (7) of larger dia. by three radial ribs which are inclined to the cylinder axis. The inner part is enclosed in an outer part (1) which fits over the barrel of the pen (15). In the event of the cap being swallowed by a child, the cap has a through passage for air which prevents the child from choking. ADVANTAGE - Facility for mass prodn., and improved safety.
Patent DE-3943069-A1 (DE)
Title: Belt-driven rotating drum - controls gas flow through inlet and outlet ports of IC engine
Inventor: PAAR DIETER
IPC: F01L7/02
Filed: 1989-12-27
Abstract: The IC engine has inlet and outlet ports respectively for admitting the fuel mixture and releasing the exhaust gases.  These are formed by openings (2, 3) in a rotating drum (1) arranged above the engine cylinders. The drum is driven by toothed belt drives. There may be separate drums for mixture entering the cylinders and exhaust gases leaving the cylinders. USE/ADVANTAGE - IC engine with fewer moving parts having a higher efficiency due to improved delivery of the fuel mixture into the cylinder.
Patent DE-4001644-A1 (DE)
Title: Water based ink contg. direct dyestuff with lactam as drying inhibitor - eliminating need for toxic inhibitor or preservative
Inventor: STORCK WOLFGANG
IPC: C09D11/16
Filed: 1990-01-20
Abstract: Water-based ink contains direct dyestuff(s) (I) and, as drying inhibitor, gamma-butyrolactam (IIA), delta-valerolactam (IIB), epsilon-caprolactam (IIC) and/or omega-enantholactam (IID). (II) is (IIA), (IIB) or epsilon-caprolactam (IIC). The ink contains 5-10 (wt.)% (I), 20-50% (II) and 50-80% distilled water (III), 0-25% polyol, pref. ethylene glycol, and 0-5% brightening dyestuff. USE/ADVANTAGE - (III) are not hazardous to health, unlike thiodiethylene glycol or formamide which are also effective drying inhibitors. The ink also keeps well, eliminating the need to add preservatives. Gives sharp strokes with good contrast and opacity, does not shine through and has good light fastness. Samples (A, B) of black ink contained 6% 'Duasyn Direct Black HSF' (RTM), 1% Duasyn Direct Red' (RTM), (A) 50, (B) 40% (IIA), (A) O, (B) 4% (IIC) and (A) 50, (B) 56% (III). Control (C) contained 72.86% (III), 12-87% diethylene glycol, 0.08% 'Genapol-X-080' (RTM), 0.42% 'Parmetol K-50' (RTM), 4.29% 'Special Violet 24B-S' (RTM), 3.43% 'Acilan Brown R 200' (RTM), 0.85% 'Base Acid Red 316' (RTM), 4.29% 'Duasyn Acid Blue' (RTM) and 0.85% 'Tartrazine XX' (RTM). Other controls were commercially available inks contg. (D) formamide, (E) formamide + thiodiethylene glycol or (F) thiodiethylene gylcol as drying inhibitor.
Patent DE-4003512-A1 (DE)
Title: Fuel mixture catalytic ignition system - comes into contact with mixture only at ignition point
Inventor: MUELLER-ALANDER GERD
IPC: F02P23/02
Filed: 1990-02-06
Abstract: The catalytic ignition system is for the mixture of air and fuel in an engine, using a catalytic device (29) on a moving component enclosing the combustion chamber. The device is brought by the rotating component (23) into contact with the mixture only at a predetermined ignition point. There can be an aperture in a fixed combustion chamber wall, and with which the rocking or rotary components (23) forms a sealed joint. The device is brought into the aperture at the point of ignition. USE - Simple catalytic ignition system for IC engine.
Patent DE-4005095-A1 (DE)
Title: Prodn. of equipment for cylinder or cone casing - uses flat sheet section between upper tool and die bent in stages along straight bending path
Inventor: SCHAEFER AUGUST WILHELM
IPC: B21D5/02
Filed: 1990-02-17
Abstract: Bending of the casing in the individual stages occurs by means of a rolling movement. An upper tool is used (1) and is pivotably fitted around a vertical axis to the die straight line (6), the bending tool (5) incorporated having a circular arc-shaped lower edge (10) in the direction of the pivot axis. The upper tool is made to roll from one end to the other of the bending tool lower edge (10). It is activated by two hydraulic cylinder and piston arrangements (11,12) which are connected to a coordinated control unit. USE - To produce a cylindrical or conical casing from a flat sheet section.