baber/WOPTO huggingface dataset:
Patent DE-3909210-A1 (DE)
Inventor: KLEIN HANS-CHRISTOF
IPC: B62D5/07
Filed: 1989-03-21
Abstract: The proposal is for an electro-hydraulic steering assister with a measuring device to detect the steering moment applied by the driver, an electronic control device (17), a hydraulic supply unit (1), a pilot valve arrangement (7) and a working cylinder (6) coupled to the mechanical steering gear, the working chambers (10, 11) of which can be pressurised depending on the steering direction, whereby the pilot valve arrangement is controlled by the electronic control device. In order to match the hydraulic assistance simply, economically and in the best possible way to the dynamic driving conditions, a proportional pressure control valve (4) is fitted in the connection between the hydraulic supply unit (1) and the working cylinder (6) which can be controlled by the electronic control device (17).
Patent DE-3911444-A1 (DE)
Title: Fine filter for purification of liquids
Inventor: KLASS GEORG
IPC: E03F7/10
Filed: 1989-04-07
Abstract: Fine filter for purification of liquids having a cylindrical housing which is provided with an inlet for the liquid to be purified and an outlet for thickened dirty liquid and in the longitudinal centre of which a rotatable filter tube is arranged which essentially extends over the length of the cylindrical housing and the tube wall of which is provided with filter orifices and which is closed at one end and is connected at the other end to an outlet through which the purified liquid can be let off from the housing. The solution according to the invention directed towards improving the use characteristics with respect to conventional fine filters is characterised in that a shield tube is provided which surrounds the filter tube forming an intermediate space between the filter tube wall and the shield tube wall, the filter tube being closed at the end facing the outlet for the thickened dirty liquid and the intermediate space between the shield tube wall and the filter tube wall being open to the housing interior for the inlet of dirty liquid.
Patent DE-3913138-A1 (DE)
Title: Machine tool with two opposite tool spindles
Inventor: KUTSCHERA JOHANN
IPC: B23B23/00
Filed: 1989-04-21
Abstract: One of the two coaxially opposite headstocks (2, 7) of the machine tool is displaceable on a guideway (5), in which arrangement this headstock (7) can at the same time be re-set as a tailstock (7a) for machining longer workpieces. In addition to the displacement movement by the spindle/nut drive (20), the headstock (7) is axially displaceable by means of a piston/cylinder unit (31) connected to the nut (29). <IMAGE>
Patent DE-3914743-A1 (DE)
Inventor: GRIEBEL EDGAR
IPC: E06B9/06
Filed: 1989-05-05
Abstract: Proposed is a vertically opening sectional door whose segments (2) are connected to each other at their edges so that they can pivot, the segments (2) being folded on each other in alternating fashion in the peripheral region of the door (1) when the door is open.
Patent DE-3915003-A1 (DE)
Title: Catalytic and adsorptive purificn. of nitrogen - in single reactor with integral adsorbent regeneration
Inventor: HAMMER JOSEF
IPC: C01B21/04
Filed: 1989-05-08
Abstract: (A) Catalytic purificn. of N2, during continuous passage through a reactor, is effected by (a) heating the impure N2 gas to at least 150 deg.C and passing it through a catalyst-filled first reactor stage; (b) passing the gas through an immediately adjoining catalyst-filled second reactor stage which is fed with H2 in controlled phases for regeneration of the next reactor stage; and (c) passing the gas, at an entry temp. of at least 180 deg.C, through an adsorbent-filled third reactor stage for residual O2 adsorption.  (B) Appts. for carrying out the process has the three reactor stages arranged in one reactor vessel. ADVANTAGE - The process is simple and efficient, gives no N2 losses or contamination by H2, removes any traces of methane and requires only one reactor.
Patent DE-3916211-A1 (DE)
Title: Polymerisation of butadiene - with combination of nickel-phosphorus lid as catalyst and aluminium co-catalyst, opt. with addn. of fluorine cpds.
Inventor: STARZEWSKI KARL-HEINZ ALEXANDE
IPC: C08F36/06
Filed: 1989-05-18
Abstract: Polymerisation of butadienes alone or combined with the catalysed polymerisation of ethylene is claimed using a Ni catalyst and an Al cocatalyst (opt. with addn. of HF, BF3, or complexes thereof), the Ni catalyst is a phosphorus yield Ni cpd. (I). (I) is produced by reaction of a Ni(O) cpd. (or a cpd.  which canbe converted thereto in situ) (II)with cpds. of formula R1R2R3P=(X)n(III) and R4R5R6P=C(R8)-C(R7)=O (IV) or with an adduct or a mixt. of a quinoid cpd. or maleic anhydride and a phosphine of formula R4R5R6P (V) and a cpd. of formula (III) (with R1, R2, R3 = opt. branched 1-20C alk(ox)amino R4-R8 = as for R1-R3 except dialkylamino, but R7 can also = H and R8 can also = H, acyl or sulphonate. ADVANTAGE - The process enables the polymerisation of butadienes to give prods. with a high cis-1,4-content, the catalyst system is suitable for both the ethylene polymerisation and the butadiene polymerisation, with the mol. wt. of the mono-olefin sequences controlled by the yield ligands and the mol. wt.  of the butadiene sequences controlled more by the type of Al cocatalysts and F-contg. additives.
Patent DE-3917520-A1 (DE)
Title: Doped segmental filter in cooling water flow line - is secured by reversed water flow collected in oscillated suction unit
Inventor: MUELLER MANFRED DIPL ING
IPC: B01D29/62
Filed: 1989-05-30
Abstract: A filter unit for circulating water, e.g. in power plant cooling systems, rests on a flange incorporated in the flow line. The head of the tubular flow line insert is covered by a filter unit formed as a domed structure assembled from frusto-conical sections, whose horizontal base plane coincides with the flow line end. In the same plane are the supports for a suction unit which can be oscillated over the filter surface and collects accumulated material from the filter after detachment by a stream of reverse flow water. Gradual passage of the suction unit over the filter surface is produced by an electric motor; a handwheel is used in power  failures. The peripheral gaps round the polygonal base section of the filter are blocked by impermeable bridge elements. ADVANTAGE - Structure is relatively cheap to mfr., and of low height.
Patent DE-3918214-A1 (DE)
Inventor: BITTENBRING GERHARD
IPC: F16F15/134
Filed: 1989-06-03
Abstract: The invention relates to a clutch disc assembly with a disconnectable idling damper (7, 13, 15, 16) in which individual elements of the locking arrangement (19) for connecting and disconnecting the idling damper are disposed between the hub disc (13) of the idling damper and that (11) of the main load damper. The locking arrangement includes at least one centrifugal weight, with a coil spring provided which extends in a plane at right-angles to the axis of rotation (3) of the assembly. <IMAGE>
Patent DE-3918595-A1 (DE)
Title: Clip for connecting drive to road drill tool-bit - has W=shaped spring clip with retaining arms located in circumferential groove
Inventor: YAMASHITA SHOICHIRO
IPC: F16B21/12
Filed: 1989-06-07
Abstract: The driving part (2) of the road drill has a square end (2a) with a cross hole (3). The driven part (4) which accepts the shaft of the toolbit in a socket at its lower end, has a matching cavity (4a) and cross hole (5). In the plane of the cross hole (5) is a circumferential groove (6). When the driving and driven parts are assembled the middle portion of the W-shaped spring clip (1) is inserted through the  aligned cross holes (3,5) with the arms (16) lying snugly in the groove (6). USE/ADVANTAGE - Road drill tool bit is easy to secure and has long service life. There is reduced danger of connection coming apart.
Patent DE-3923997-A1 (DE)
Title: Control system for magnetic bearing
Inventor: WAKUI SHINJI
IPC: B24B41/04
Filed: 1989-07-20
Abstract: The control circuit has a displacement transducer (1), an integrator (2), a phase compensator (3) and an amplifier (4). The direct acting circuit (13) has a low pass filter (8) and high pass  filter (9) connected to the input terminal (14).  The output from the low pass filter is fed directly to differential amplifier (11) and via. a compensating filter (12), to the control circuit.  The output from the high pass filter is also connected to the differential amplifier via. a gain control (10). The low pass filter has a transfer function comprising a polynomial denominator tailored to the required response characteristics.  The high pass filter has a different transfer function comprising a different denominator with identical coefficients to those of the polynomial denominator of the transfer function of the low pass filter.
Patent DE-3924901-A1 (DE)
Inventor: TABATA YASUSHI
IPC: G03B1/60
Filed: 1989-07-27
Abstract: An apparatus for rewinding a film into a patron. The apparatus has a sensor that detects the presence of the film at a predetermined position along a film advancing path. A detector determines the amount of film that is rewound into the patron and stops the rewinding of the film into the patron after the leader section of the film is rewound beyond the predetermined position if the detector determines that less than a predetermined amount of film moves beyond the predetermined position.
Patent DE-3928957-A1 (DE)
Title: Junction box for connection of telephones and accessories - has portion of cover adapted as flexible key for operation of latch to release inserted plug
Inventor: TENHAM HORST-HELMUT
IPC: H01R24/00
Filed: 1989-08-31
Abstract: In a wall-mounted embodiment a straight plug (22) is fitted into a socket (6) through an opening (50) in a direction parallel to the wall (44). An automatic locking mechanism (51) includes a part (52) shaped (53) to fit the plug (22), formed in one piece with a prestressed locking bar (54) which co-operates with a release key (56) constituting a flexible portion of the cover (2). A catch (60) on the cover (2) engages a counterpart (59) on the base portion (3) protruding through the circuit board (5). ADVANTAGE - Inexpensive device is equally suitable for Western plug system standardised internationally for digital networks.
Patent DE-3929987-A1 (DE)
Title: Security catch for vehicle door - only allows servo to open door when vehicle is parked
Inventor: WAGNER ARMIN
IPC: E05B77/54
Filed: 1989-09-08
Abstract: The vehicle door, e.g. rear door hatch (3), is opened by a servo drive (2) activated by a microswitch (5) in a recessed/hidden Location. The drive and switch are linked to the CPU (1) which is programmed to release the catch only in specified conditions. The principle can also be applied to the rear passenger doors. The release conditions can be:- ignition switched off, driver's door door open, driver's seat unoccupied etc. The release can also be interlocked to an internal switch. ADVANTAGE - Added security, anti-theft protection no external mechanical catch on rear door.
Patent DE-3934428-A1 (DE)
Title: Room temp.-curable epoxide resin compsns. - contain, as hardener, aliphatic or cyclo-aliphatic amine, di-sec. di:amine, and N-butyl-benzene-sulphonamide
Inventor: WOLF ELMAR DR
IPC: C08G59/18
Filed: 1989-10-14
Abstract: Hardenable compsns. (I) comprise (A) epoxide resin with more than 1 epoxy gp. per mol., hardenable at room temp., (B) mixt. of (B1) 1 mol. of aliphatic or cycloaliphatic polyamine contg. at least 3 active H atoms and (B2) 0.25-4 mol. disec. diamine of formula (II) (where R = branched or unbranched 2-18C alkylene or cycloalkylene opt. substd. by 1 or 2 OH, 1 or more CH2 gps. opt. being substd. by O; R' = branched or unbranched 3-20C alkyl opt. substd. by 1 or 2 OH, 1 or more CH2 gps. opt. being substd. by O, or R' = cyanoethyl or =CH2CH2-C(:O)O-tert.Bu), (C) 50-350 wt.%, on (B), N-butylbenzenesulphonamide (II). (I) pref. contain fillers, pigments and accelerators. USE/ADVANTAGE - Coatings, partic. for roofs and floors, and adhesives, sealants, moulded articles. Cured prod. has good adhesion, flexibility, impact toughness, tensile strength, and is resistant to petrol.
Patent DE-4002291-A1 (DE)
Title: Testing welds in plastic film linings - by passing electric field generator and corresp. receiver along on opposite sides of weld and hence testing non-destructively
Inventor: ROEDEL ANDREAS DIPL ING
IPC: G01N22/02
Filed: 1990-01-26
Abstract: The weld seam in plastic lining sheets is tested by passing along the seam (a) equipment to generate an electromagnetic field and (b) a receiver, whereby both are moved over the seam and a reflector is located beneath the seam; both generator and receiver are moved together but on opposite sides of the weld. ADVANTAGE - The method is non-destructive. The reflector can be a metal foil which is either glued on or applied by coextruding with the sheet.
Patent DE-4008846-A1 (DE)
Title: Sterile filling method for fruit juice - uses carbonic acid to trap heat sterilised juice from steam sterilised containers
Inventor: GEISS HELMUT
IPC: B65B55/14
Filed: 1990-03-20
Abstract: When filling containers with fruit juice and fruit puree etc. the juice is first sterilised by a short heating process and after cooling is filled into the containers (10) with a relatively large filling volume. The containers are before filling first cleaned and then sterilized. The juice is tapped off in portions by a bar using carbonic acid. Sterilization can be by steam injection or by using an ultrahigh heating apparatus (11). ADVANTAGE - Improved quality and taste as well as improved hygiene.
Patent DE-4009490-A1 (DE)
Title: Transport arrangement for separated coins or similar - has transport pins having coins along path and rotatable pressure roller at transition from transport element to transport path
IPC: G07D9/00
Filed: 1990-03-21
Abstract: The transport arrangement feeds coins via a delivery element, e.g. a hole plate, to a conveyor path with a guide edge.  The coins (1) are conveyed along the guide path (2) by transport pins (5) protruding through a continuous slot (4) in the supporting surface (2). A rotatable pressure roller (6) at the point of transition from the delivery element to the transport path is inclined wrt. the transport direction and arranged at a distance to the supporting surface whereby the coins are pressed against the transport path and supporting surface. ADVANTAGE - Ensures that coins are transported smoothly along guide edge.
Patent DE-4016409-A1 (DE)
Title: Reinforced wood flour filled polypropylene sheets - with glass fibre reinforcing layers on both sides for good elongation at break properties
IPC: C08L23/12
Filed: 1990-05-22
Abstract: Flat composite material based on woodflour filled polypropylene contg. 10-50 wt.% wood flour and 0-20 wt.% glass fibres with an ave. length of less than 2 mm, with reinforcing layers on both sides of endless glass fibres in the form of random or parallel laid fibre layers or fibre mats. Pref. the wood flour filled polypropylene is extruded as a flat web, covered on both sides with the reinforcing layers, pressed into a composite and cooled. USE/ADVANTAGE - The reinforcing layers give woodflour filled polypropylene sheets with improved elongation at break properties compared to previous wood filled polypropylenes (c.f. eg EP-172436). The materials are eg 20-200 cm wide and 0.1 - 1 cm thick, and can be bent, pressed or deep drawn with heating to form finished parts useful eg in the automobile sector. (2pp Dwg.No.0/0)
Patent DE-4021275-A1 (DE)
Inventor: LORENCAK PRIMOZ DR
IPC: D21C5/02
Filed: 1990-07-04
Abstract: Process for de-inking printed papers by soaking the papers in an aqueous medium in the presence of water-soluble or water-dispersible polymeric amphiphile compounds in which the hydrophilic and hydrophobic parts consist of condensed and/or polymerised monomer units and alkali and, where applicable, further customary de-inking aids, followed by cleaning the waste paper by washing or flotation.
Patent DE-4024650-A1 (DE)
Inventor: SCHULZ REINHARD DR
IPC: B25D17/02
Filed: 1990-08-03
Abstract: In drill bits, stepwise cross-sectional changes are made, deviating from a cylindrical and conical stem, between insertion end (2, 7) and drill-bit part (5, 8). In this way, the energy throughput in the case of continuous shock waves is improved and higher working capacities are achieved with the drill-bit part (5, 8). 
<IMAGE>
Patent DE-4024995-A1 (DE)
Title: Hydraulic tool clamping element - has pressure only on narrow shoulder of indicator plunger to allow use of small compliant return spring
Inventor: BAUR MANFRED
IPC: B23B31/30
Filed: 1990-08-07
Abstract: The hydraulic tool clamping element is self-contained in a housing (1) fastened to the rotating spindle of the machine.  A screw (3) exerts a force on the piston (5) to produce a desired pressure in the oil-filled pressure chamber (2).  Sliding through two fixed seals (11,12) of a stepped bore (7) is an indicator plunger (6). Between the seals the indicator plunger has a small  shoulder (9) which serves to move it against an opposing return spring (10) when oil pressure rises in the space between the seals.  There is a passage connecting this space to the pressure chamber (2).  The distance the tail (8) of the indicator plunger protrudes through the housing measures the oil pressure and hence the clamping force. USE/ADVANTAGE - Compact dimensions.  Movement of plunger is great enough to permit easy reading.  Oil loss through seals is minimal.
Patent DE-4028620-A1 (DE)
Title: Material for fire protection of roofs - can also act as plant substrate and drainage layer or as surface to be walked on
Inventor: ZINK WALTER
IPC: E04D11/00
Filed: 1990-09-08
Abstract: A protective material for fibre protection, esp. of roofs consists of non-burning, particle form components of particle size 2-12mm which under normal weather conditions is not, or only insignificantly degraded out in the open. The material can be conveyed pneumatically. The material contains additives, such as binders and/or nutrients, pref. anhydrite (esp. of density 30-150 kg/m3) or humus. The material has total pore vol. 50-60 vol. % in air dried condition and has a water storage capacity of 100-200 water per m3. The particulate component is calcined clay, pumice, inflated clay, inflated slate, lava, slag. USE/ADVANTAGE - The material gives the roofs fire protection, but can also be used as a plant substrate for grassed-over roofs and can also be used on roofs which are to be walked on. The material is suitable for use on flat roofs, or roofs with only a very slight slope (up to 25 deg) when used as a plant substrate the material simultaneously acts as a drainage layer. When used as a plant, substrate on conventional drain layers, clogging up of the filter layer is prevented.
Patent DE-4029267-A1 (DE)
Title: Current measuring circuitry for frequency converter - uses currents measuring element in voltage intermediate circuit of converter to deliver pulses at set times
Inventor: BOCK JOHANNES
IPC: G01R19/00
Filed: 1990-09-14
Abstract: The machine converter is pref. a pulse converter with three switching poles to adjust the output voltage of the frequency converter as regards amplitude and frequency. The current measuring element in the intermediate circuit of the frequency converter delivers pulses at set periods that correspond to the phase currents of the windings of the machine, e.g. a three-phase sync.  machine to be supplied and flowing in this intermediate circuit. Two pulses follow in sequence, each representing the values of another phase current of a winding and, e.g. after each pair of pulses, a free-running condition pertains in which the intermediate circuit current is zero. The pulses can be fed to a fundamental frequency current detection circuit (10), an effective current detection circuit (11) and a current peak circuit (16) receives the actual state signal (Uist, Vist, Wist). At least one output of this logic circuit is connected to the current detection circuit (9, 10, 11). An a-d converter follows the latter to supply a microprocessor system. ADVANTAGE - Derives fundamental frequency, effective component and peak values of output current from single current measuring element.
Patent DE-4030455-A1 (DE)
Inventor: BAITZ GUENTER
IPC: G06K13/08
Filed: 1990-09-26
Abstract: The devices for receiving integrated circuit cards used until now do not sufficiently protect individual cards in all operation modes. The new device should allow the cards to be locked. For that purpose, a locking device (16) has at least one lock (9) shaped as a lever (20, 21, 22) that can be moved from a locking position into an unlocking position and vice-versa, and that is preferably held in its locking position by means of a holding device (23). The holding device (23) can for example be a torsion spring (36). In another implementation, the locking device (16) has an additional closable blocking device (44) that acts at least on said lever and that can be moved from a blocking position that prevents said lever (21, 22) from moving into a release position that allows the lever (21, 22) to move and vice-versa. This device is particularly useful to ensure different degrees of protection of several cards and to allow these cards to be used for various purposes in cash registers.
Patent DE-4032131-A1 (DE)
Inventor: VOGEL MANFRED DIPL ING
IPC: H03K17/78
Filed: 1990-10-10
Abstract: Proposed is a high-voltage switch (18) with light-sensitive zones, the switch being designed to conduct high voltages to spark plugs. In order to pass the light energy from the light-emitting element (20) to the light-sensitive zones of the switch (18) with minimum losses, the invention proposes that the transition area (21) between the light-emitting element and the light-sensitive zone have a light-focussing design.
Patent DE-4033025-A1 (DE)
Title: variable frequency switchable oscillator - has potentiometer between Schmitt-trigger output and continuous level
Inventor: PROSKE ARNOST
IPC: H03K3/0231
Filed: 1990-10-18
Abstract: The variable frequency switchable oscillator consists of an inverting Schmitt trigger (1), whose output is fed back to its input via a potentiometer (3), while its input is earthed via a capacitor (2). The potentiometer is incorporated between the output of the Schmitt trigger and a permanent level. The potentiometer slider is coupled to the Schmitt trigger input. When the oscillator switches on the potentiometer is so positioned that the resistance between earth and slider is at a min so that the capacitor can be charged up to a specific OFF threshold of the Schmitt trigger via the feedback resistance between the Schmitt trigger output and the slider. USE/ADVANTAGE - For frequency generators etc, with simple design and improved operation.
Patent DE-4036711-A1 (DE)
Title: Hydraulic vehicle braking pump - incorporates swashplate drive and control valves for min. drag
Inventor: MICHEL RUDOLF
IPC: F16D57/06
Filed: 1990-11-17
Abstract: The variable swashplate (3) drives the axial mounted pistons (5) to generate the high pressure brake fluid flow through the flow restrictions and back to the sump. The swashplate is lubricated by the fluid flow through the shaped feet (10) on the pistons. Non-return valves in the feed to the feet stop the flow when the pressure drops and the pistons retract from the drive. - The system has a min. drag when not braking. The pump is primed by a priming pump and is vented by control valves when the braking sequence is finished.