baber/WOPTO huggingface dataset:
Patent DE-4003792-A1 (DE)
Title: Portable data carrier e.g. for operating terminals
IPC: G07F7/02
Filed: 1990-02-08
Abstract: A portable data carrier (D) contains a memory, e.g. for storing personal identifiers for operating terminals and a terminal-controlled visual display region (AZ). The display region is a foil covered layer which changes reversibly to first and second optical states, e.g. transparent and opaque, when heated from a first, e.g. room temp. to a second and third temp.  The layer is held at the appropriate temp. for clearing, printing and viewing of the transparent information against an opaque background or vice-versa.
Patent DE-4005548-A1 (DE)
Title: Cops and sleeve markings at pallet base - are detected by sensors to operate path direction controls according to yarn type and colour
Inventor: WIRTZ ULRICH DR ING
IPC: B65H67/06
Filed: 1990-02-22
Abstract: The carrier pallets for cops and sleeves carry identifications (28,29,30) on the pallet base (27), to show colour or yarn type and the like. Sensors (12) below the transport plane (26) identify the markings to control the directional guides in the conveyor path for the pallets. The identification markings use different sections where the surfaces have different reflection characteristics for electromagnetic beams. At the monitoring point (7), a beam transmitter delivers a beam at the markings for the reflections to be received by the sensors which discriminate between the reflected light and/or strength. Or the base of the pallet can be in different colours to give reflected light suitable for sensor recognition. The pallet base (27) has a number of concentric discs and/or rings (28,29,30) of different dias.  of different reflective qualities and/or sizes for sensor monitoring, or they can be of materials of electrical conductors or semiconductors for the monitoring sensors. The discs and/or rings can also be of a magnetically conductive material, such as ferrite or soft iron. ADVANTAGE - The control of the material movements is resistant to environmental influences and mechanical damage.
Patent DE-4007382-A1 (DE)
Title: Rucksack with hip belt - has at least one pocket and pack bag with connections and with upper and lower bag part
Inventor: MUELLER MICHAEL
IPC: A45F5/02
Filed: 1990-03-08
Abstract: The rucksack has a hip-belt (2) to which is fixed at least one pocket. It incorporates a pack-bag joined to the hip-belt (2) by at least one easily separable connection.  The connections may consist of hooked-pile fastener, hook and eye, notched pin and conically tapering attachment, or clip-fastening. The pack-bag (1) consists of an upper (1.1) and a lower (1.2) part joined by other connections (3',4) in the form of hooked-pile fasteners or clip-fastenings. USE/ADVANTAGE - The rucksack is designed to distribute the load ahd is easy to handle.
Patent DE-4014611-A1 (DE)
Title: Decoupling system for number of batteries - has comparator controlled programme unit to control batteries
Inventor: SCHODER ERWIN
IPC: H01M10/44
Filed: 1990-05-07
Abstract: The switching circuit (3) is used to control the decoupling of two or more storage batteries (4) that are connected between a charge unit (27) and loads (28). Within the switching circuit are a number of relay stages operated by a control unit (6). The control unit (6) has a comparator (11) that receives reference voltages (8,9) and control inputs (16). Outputs are received by an asynchronous programme switching stage (10) that  generates signal (7) to control the relays. ADVANTAGE - Controls charge and discharge cycle. Avoids voltage transients.
Patent DE-4023236-A1 (DE)
Title: Measuring position of workpiece edges by forming diffraction image - using gap formed between workpiece edge and known position reference edge
Inventor: STRAUB HERBERT DIPL ING
IPC: G01B11/02
Filed: 1990-07-21
Abstract: The position of a workpiece edge is measured by illuminating it with parallel light and collecting and evaluating a monochrome diffraction image of the edge on a light sensitive receiver. An image of a gap is developed which is formed by the workpiece edge and an edge of known position. The width of the gap is determined from the positions of the diffraction maxima and/or minima. This gives a measure of the position of the workpiece edge w.r.t. the reference edge. ADVANTAGE - Simple, more accurate workpiece edge position measurement than with intensity measurement methods.
Patent DE-4023244-A1 (DE)
Inventor: KLATTENHOFF JUERGEN DIPL PHYS
IPC: H01H36/00
Filed: 1990-07-21
Abstract: The invention relates to a switching device on installations in damp spaces, in particular on bath tubs or whirlpools. Provided on the side of a separating wall (2) facing away from the damp space are magnetically operable switching elements (7), in particular reed contacts, which are operated through the separating wall (2) from the other side by a permanent magnet (4). <IMAGE>
Patent DE-4024926-A1 (DE)
Title: Lining process for pipelines repair - sealing side ducts with position indicating caps for location by liner cutting equipment after lining main pipe
IPC: F16L55/26
Filed: 1990-08-06
Abstract: The pipeline is first prepared by inserting special caps (5) into the side ducts (2) to seal them prior to inserting the main liner (3) and filling the space between the liner and pipe with cement, etc. The centre of each seal cap has a position indicator (6) to enable the cutting equipment (9) to be accurately positioned for cutting into the side ducts. A simple position indicator comprises a magnetic rod (6) whose position is located by three sensors arranged in a triangle.  Other sensors may detect HF sources, thermal sources, etc. The cutter is remotely driven and cuts into the side ducts while welding the joins. USE/ADVANTAGE - Esp. for sewerage pipes. Accurate liner positioning w.r.t. side ducts, self locating.
Patent DE-4026156-A1 (DE)
Title: Magnetic clamp plate for welding table - has magnetic surface area for fixing workpiece and heat-resistant surface area
Inventor: MUEHLHOFER HERMANN
IPC: B23Q3/154
Filed: 1990-08-17
Abstract: The magnetic clamp plate (10) has its surface divided into a magnetic surface area (12) and a heat-resistant surface area (14) with a relatively low heat conductivity.  The magnetic surface area uses permanent magnets or electromagnets for securing the workpiece, the heat-resistant surface area (14) acting as the working surface. Pref. the angular inclination of the clamp plate (10) is adjustable via a hydraulic arm (40), the workpieces fed on and off its surface via a roller (20) at one edge of the latter. USE - Small scale mass prodn. stage involving holding workpiece for boring, grinding etc. as well as welding.  Allows working position of workpiece to be easily changed.
Patent DE-4026215-A1 (DE)
Title: Vehicle door with window lifting mechanism - has window frame with guide rails and gaskets in which window pane is guided when raised and lowered
Inventor: FREUDENBERG STEFFEN
IPC: B60J10/79
Filed: 1990-08-18
Abstract: The window lifting system consisting of an electric motor driving unit (22) and a lifting mechanism with a window panel follower (25), with which the window panel (7) is connected. The window frame (4) and the inserted window panel (7) with the window lifting system comprising the drive (22), the lifting mechanism (23) and the window panel follower (25) are connected to form a preassembled and preadjusted constructional unit as a door window module (19). The door window module has a smaller width than the window reception space, and the door window module can be pushed in from above, through the reception space, in to the door case and there secured by screws. The one arm window lifter includes a bracket (21), which is fixed at the frame support (6). The electric motor gear unit (22) is arranged on the bracket and driven gear wheel meshes with the toothed segment (24). ADVANTAGE - Vehicle door contains large preassembled component consisting of number of parts.
Patent DE-4027328-A1 (DE)
Title: Stereo camera for surface structure esp. of teeth - projects two beams from equal and opposite angles for illumination of surface monitored by image sensor
Inventor: PFEIFFER JOACHIM DR RER NAT
IPC: A61B1/247
Filed: 1990-08-29
Abstract: Light from two LEDs or other sources (18) is projected by prisms (21) through slots (22,23) in a screen (24), and focused by lenses (L3,L4) on to the surface of a tooth (15).  Linear reference patterns are generated by liq. crystal devices or gratings (19,20) in respective beams (13,14). Central rays (25,26) enclose an acute angle (beta) bisected by the optical axis (27) along which a reflected ray passes through a third slot in the screen (24) to a frame transfer CCD image sensor (17). ADVANTAGE - All details of surface structure can be represented and measured with two beams projected from different directions.
Patent DE-4029900-A1 (DE)
Title: Mould for prodn. of concrete tubes -  has cover which centres inner shell of mould with outer shell
Inventor: EPPING WILHELM
IPC: B28B21/14
Filed: 1990-09-21
Abstract: A concrete tube is formed by filling a mould with concrete, vibrating the filled mould, and then allowing the concrete to harden before removing the tube from the mould. The mould consists of an inner tubular shell (2) which has its upper end fitted into the underside of a flange (15) of a cover (14) and is thus correctly centrered. The cover (14) is in the form of a cone (9) with arms (30) which distribute the concrete around the mould. The cover also centres the outer tubular shell (3) and thus ensures that it is co-axial with the inner tubular shell. USE/ADVANTAGE - Production of concrete tubes with concentric bores and outside surfaces.
Patent DE-4039126-A1 (DE)
Title: Artificial muscle filling system with filler tube - incorporates tube, with ring to assist flow of inflation gas
Inventor: RINGER MICHAEL
IPC: F01B19/00
Filed: 1990-12-07
Abstract: The filler device consists of a thin tube (1) stretching from the filling-fixture (E) at one end of the muscle balloon (2) to the extended centre of the balloon tubing. A ring is fixed to the centre at the middle end of this pipe. The ring (2) has a sufficiently large initial surface to allow rapid inflow of the medium emerging from the pipe (1). The ring is a little smaller than the max. dia. of the balloon when it is  inflated. USE/ADVANTAGE - The system forms an artificial muscle which replaces a piston-cylinder unit for raising weights. The ring on the end of the filler pipe allows quicker inflation.
Patent DE-4103665-A1 (DE)
Title: Electromagnetically operated valve - has cylindrical magnetostrictive actuator which contracts in axial magnetic field of selectively energised windings to allow fluid flow between adjacent ports
Inventor: ZAVISKA DALIBOR
IPC: H01F7/06
Filed: 1991-02-07
Abstract: The cylinder (102) of magnetostrictive material almost completely fills the bore (101) in which it is sealed with O-rings (120-122) and urged towards one end by a stack of spring washers (103). Five fluid connections (107-111) opening into respective annular grooves (112-116) in the wall of the bore (101) are interconnected as required by selective excitation of coils (117-119) generating the axial magnetic field which causes local deformation of the cylinder (102), opening corresp. passages (104-106) between grooves (112-116). A longer cylinder may be divided axially into sections sepd. by spring washers. ADVANTAGE - Any number of valve passages can be controlled independently.
Patent DE-4106556-A1 (DE)
Inventor: BALL ANTHONY
IPC: D01H5/50
Filed: 1991-03-01
Abstract: To join a thread (20) spinning in an open-ended spinning machine (11) comprising a fibre-collecting surface (17), a card sliver (2) is fed to the card clothing of an opening cylinder (141), which unravels it into fibres (22), and fed in this form to the fibre-collecting surface (17). There the fibres (22) are tied into the end of a return thread, which is then continuously drawn off. The leading end of the card sliver (2) which forms one tuft (21) for joining the thread is fed to the opening cylinder (141) with a depth of penetration greater than the depth of penetration after joining, while the thread is joined in the usual manner in accordance with a reduction in the depth of penetration. The depth of penetration is reduced abruptly, to prevent thickenings at joinings. The process is carried out by a device (4) for changing the depth of penetration which is connected to, and controlled by, a control device (30).
Patent DE-4107640-A1 (DE)
Title: Frame synchronisation circuit for data receiver - uses correlator to identify synchronisation word for controlling frame clock generator
Inventor: WAIBLE HANS-PETER DIPL ING
IPC: H04J3/06
Filed: 1991-03-09
Abstract: The circuit extracts a bit pattern of given bit length from the received data bit stream, for comparison with a reference synchronisation word of similar length, via a digital correlator. The synchronisation word identifier (SWE) has a shift register (SR) and a synchronisation word decoder (SD) providing a setting pulse for a frame clock generator (RTG). The correlator (KOR) has at least one comparator (KOM) for bit comparison between the reception signal and the free frame signal, followed by a reversible counter (VRZ) and an evaluation stage (ED), coupled to the frame clock generator (RTG). ADVANTAGE - Allows identification of synchronisation words containing noise.
Patent DE-4108545-A1 (DE)
Title: Travelling hydraulic jig pallet - accommodates all fluid pipes in chamber shut off from clamping surface
Inventor: BODENSCHATZ HORST
IPC: B23Q1/03
Filed: 1991-03-15
Abstract: The hydraulic jig pallet is for use in a flexible production system, travelling via a series of machining stations to and from a clamping and releasing station. The work remains in position when the pallet is disconnected by an automatic coupling from the hydraulic supply at the clamping and release station. All fluid supply and discharge pipes (11-16) are contained in a common chamber in the pallet body (5) and shut off from the clamping surface (3). At each pallet end face (17) the pipes are brought out through wall openings (18), and then extend upwards and via bends to the clamps on the clamping surface. USE/ADVANTAGE - Hydraulic jig pallet accommodates hydraulic clamps, positioning devices etc. in any desired position for automatic operation.
Patent DE-4112417-A1 (DE)
Inventor: MUELLER-KIRSCHBAUM THOMAS DR
IPC: D06F34/22
Filed: 1991-04-16
Abstract: The invention concerns a process for washing fibrous materials, skins, textile materials or the like using an aqueous, tenside-containing washing liquid obtained by adding washing agents to water. The miminal doses as determined in subsequent washing tests are always obtained automatically without the cleaning power and the cleaning efficiency being reduced to unacceptable levels. To this end, the surface tension of the washing liquid is measured during the washing process using a tensiometer. The actual washing agent concentration is derived from these measured values and an initial concentration is derived from the quantity of washing agent added. The detergency is calculated from this initial concentration. The addition of washing agent is discontinued when no further increase occurs in the detergency. The invention also concerns a device for carrying out the process. The device has capillaries connected to constant gas flow sources and immersed to the same depth in the washing liquid. The capillaries are connected to a device for determining the pressure or the frequency of pressure variations which controls a dosing unit via an evaluation unit.
Patent DE-4116551-A1 (DE)
Title: Spin dryer features housing with intermediate bottom - dividing housing into spin housing above bottom and brake and motor housing, giving safe operation of brake and locking mechanism
Inventor: FIEDLER KURT
IPC: D06F49/08
Filed: 1991-05-21
Abstract: A spin dryer is equipped with a housing with an intermediate bottom, which divides the housing into a spinning housing lying above the intermediate bottom, and a motor and brake housing lying below the bottom. The bottom is equipped with an opening for an emergency overflow extending into the spinning housing. The overflow leads out of the appliance in the brake housing section. ADVANTAGE - The brake and locking mechanism operate securely and meet the new stringent European standard (EH 60335-2-4) for spin-dryers.
Patent DE-4120113-A1 (DE)
Title: Continuous molten plastic filter - directs current obliquely through filter surface
Inventor: SIEBERT MARTIN DIPL ING
IPC: B29C48/69
Filed: 1991-06-15
Abstract: Molten plastic is continuously filtered through a sieve, partic. by the Gneuss system with a rotary sieve disc or a standard auto-screen. The main current does not flow through the filter surface at right angles to it, but at up to 90 deg. to the flow direction. With the Gneuss system, the filter disc can be parallel to the original flow direction before entering the filter, the molten plastic passing obliquely through it. ADVANTAGE - Increases available filter area.
Patent DE-4120709-A1 (DE)
Title: Hydraulic cyl;inder prodn. - using extruded or cold drawn aluminium@ tube and butt-welded hollow socket(s) with solid end finally drilled through
Inventor: BLOECKER DETLEF DIPL ING
IPC: B60T11/16
Filed: 1991-06-22
Abstract: Mfg. hydraulic cylinders, consisting of a tube with at least one sideways projecting connection socket, comprises (a) mfr. of precision tube with highly finished internal surface from Al material by extrusion or cold plug drawing; (b) resistance butt welding one or more prepared hollow connection sockets with solid joining end; (c) finish boring through solid end of socket and cylinder tube wall. Pref. the end of the connection socket (12) to be seated on cylinder tube (10) is pointed (13). One end of the tube is cold formed and expanded to form a retaining shoulder and a flange is pressed on the expanded end after step (a). A cylinder cap is welded to the tube at the other end by electron beam welding. USE/ADVANTAGE - Provides an economic method of mfg. hydraulic cylinders, esp. vehicle brake cylinders, which requires no post-finishing operation on the cylinder bore.
Patent DE-4122932-A1 (DE)
Inventor: HOLZAPFEL WOLFGANG DIPL ING DR
IPC: G01B11/00
Filed: 1991-07-11
Abstract: Using a device according to Figure 10, quite different signal variations can be generated for the purpose of position measurement with the aid of chirped diffraction gratings (A, B, A') in accordance with the so-called three-grating principle. <IMAGE>
Patent DE-4124256-A1 (DE)
Title: Raw cement heat treatment assembly - has additional cyclone stage next to twin-stage cyclone system
Inventor: BAUER CLAUS
IPC: C04B7/43
Filed: 1991-07-22
Abstract: The assembly to apply thermal handling to floury material, especially in mfg. cement clinker, has an additional third cyclone heating stage (III), next to the twin cyclone heating system, heated by exhaust gas from the clinker cooler (25) to process an additional material feed (20). The additional stage (III) has a calcinator (27) with secondary heating (26) to take material (28) from the second lowest cyclone stage (16) of the additional stage (III) and material (24) from the lowest cyclone stage (15) of the section (II) towards the additional stage (III). The preheated material from the stage (I) away from the additional stage (III) passes through a connecting channel (21) into the exhaust gas rising channel (22) from the rotary kiln into the lowest cyclone (15) of the other stage (II) in the twin assembly (I,II). The structure height of the cyclones of the additional stage (III) is higher than for the cyclones of the twin system (I,II). A partial material flow (32) from the second lowest cyclone (12) of the stage (I) away from the additional stage (III) passes to the lowest section of the neighbouring stage (II). The remaining material (32a) in the first stage (I) passes from the lowest cyclone (13) through a channel (33) directly into the rotary kiln (11). The twin stage system (I,II) together processes about 50% of the material, and the additional stage (III), together with the calcinator (27), processes the remaining 50% of the total raw material (18,19,20) to be heat treated. ADVANTAGE - The assembly can virtually double the productivity of a twin stage system, in terms of tons/day.
Patent DE-4125857-A1 (DE)
Inventor: GROSS HEINZ DR
IPC: C08L33/12
Filed: 1991-08-03
Abstract: The invention relates to a polymethacrylate film having a matted surface, comprising from 99.9 to 30 % by weight of a thermoplastic polymer matrix A, built up from a hard phase a1) and a tough phase a2), and from 0.1 to 70 % by weight of latex particles of a thermoelastic polymer B which are included therein and cause the matt effect. The hard phase a1) may preferably contain low-molecular-weight and/or copolymerised UV absorbers. The difference between the refractive indices of the thermoplastic polymer A and of the thermoelastic polymer B must not exceed 0.02. In spite of its matted surface, the film has high transparency, is weathering-resistant, has low stress whitening on folding and is insensitive to cold and heat as far as its toughness is concerned. At the same time, it additionally acts as a UV filter and is thus an effective protection for substrates which are sensitive to UV radiation. The film may, if necessary, be bonded to the substrate by lamination, pressing, thermoforming or adhesive bonding.
Patent DE-4126124-A1 (DE)
Title: Solenoid driven water pump operated from solar energy - has double iron cores with large area inlet flap valve held down by weak spring
Inventor: LUTZ GERHARD
IPC: F04B17/00
Filed: 1991-08-07
Abstract: The two iron cores (7) forming the reciprocating drive for the solenoid pump are joined by a non-magnetic steel tube and have a return spring support. The inlet valve has a ring-shaped flap element (2) held down by a relatively weak spring (3). A spring loaded outlet valve (8) vents water out of the pump chamber into an outlet chamber (9) with a gas pocket. The gas pocket absorbs the pressure pulses from the pump action and provides a more even outflow of water. The solar generated power has variable pulse length and amplitude, depending on the sunlight level. USE/ADVANTAGE - For pumping water from well. Efficient pump action, small spring forces reduce efficiency by minimal amounts.
Patent DE-4127868-A1 (DE)
Title: Monomode optical fibre with ramped refractive index profile - has continuous linear increase in index of inner cladding up to intermediate value of core index
Inventor: HAHN GERHARD DR ING
IPC: G02B6/02
Filed: 1991-08-22
Abstract: The core, which in conventional fibres has an abrupt transition to a lower refractive index at its interface with the cladding, is made significantly smaller with an actual dia. (2a) only 10/11 of the max. (2a'). The max. difference (delta n+) in refractive index between core and cladding is 0.00401 and the cladding proper has a refractive index (delta n-) reduced by 0.0012. This is achieved by doping with P and F alone in the inner cladding. ADVANTAGE - Fibre having less attenuation and sensitivity to curvature can be mfd. easily with smaller requirements of Ge and P.