baber/WOPTO huggingface dataset:
Patent DE-4015290-A1 (DE)
Title: Electropneumatic gear change system with special emergency valve - includes standby compressed air supply with multi-position valve and electrical switch closed in its inoperative position
Inventor: HAMMA KARLMANN
IPC: F16H61/02
Filed: 1990-05-12
Abstract: The magnetic valves (41-48) in a central unit respond to commands from the gear selector and clutch pedal. The compressed air connection (31) to the unit is taken from the reservoir (61) and air-cleaner/water-separator (62). In emergency an alternative supply (7) is connected directly to a selected setting cylinder (21-24) by a special multiposition valve (9) which has an additional position (96) provided to allow movement in reverse, with safety valves (55,56) coupled mechanically to the clutch or handbrake lever. ADVANTAGE - Vehicle is not immobilised by loss of air pressure in its general supply circuit.
Patent DE-4017697-A1 (DE)
Title: Mfg. electronic component with chip on thermal conductor - positioned in through-hole in base for use as surface mounted power device on metal core circuit board
Inventor: OLBRICH LUDGER DIPL PHYS
IPC: H01L23/29
Filed: 1990-06-01
Abstract: Chip(s) are placed on a base (1) connecting to the terminals leading to the outside and contact a thermal conductor (11).  The latter and the base are perforated in the area (13) for mounting the chip (30). A heat conductive piece (21) is placed in the hole (20) and connected to the base and chip is placed on and the a frame (11) and the heat conductor. The frame is pref. of copper alloy or aluminium. The base is perforated by stamping, etching or erosion. The frame and base are connected by pinching, cold welding, bonding with adhesive or soldering. The frame is placed with Ni and/or Ag or Au on the surface (25) fitting in the hole. The chip is attached to the frame by bonding with adhesive, soldering or eutectic bonding and contacted with the terminals (12) with bond wire (32). USE/ADVANTAGE - Power device mountable on surface of metal core circuit boards. Can be pushed through circuit board and soldered firmly to the back. Standard lead frames may be used as the base. Ensures esp. good heat dissipation.
Patent DE-4019922-A1 (DE)
Title: Optical channel for opto-electronic measurement of rolled product
Inventor: HOCKE HANS
IPC: B21B45/02
Filed: 1990-06-22
Abstract: The optical channel (8) is maintained clear of dust etc. by using annular jets (2, 4) on either side of a measuring gaps (9) through which the rolled product is fed. The jets and the gap cooperate to providee a section force in the rolling direction which draws the dust particles away from the optical channel (8). Pref., the optical channel has a light source and a photodetector on opposite sides of the rolled product each protected by a respective optical window.
Patent DE-4021798-A1 (DE)
Inventor: GOEBEL WOLFGANG
IPC: H05B3/44
Filed: 1990-07-09
Abstract: In infrared emitters, whose resistance wire is located in a sheathing tube of quartz glass or fused silica, radiant losses can be reduced by means of a reflection layer, for example of gold, located on the sheathing tube. To improve the thermal stability of the reflection layer, a protective coating of zirconium dioxide, silica and/or tin dioxide is proposed. The protective coating can be produced by using thermally decomposable organic compounds of zirconium, silicon and/or tin.
Patent DE-4023028-A1 (DE)
Inventor: BLATTER KARSTEN DR
IPC: C09K19/40
Filed: 1990-07-20
Abstract: A liquid crystal copolymer has the formula (I), in which l, m, p, q, r, s are equal to zero or to an integer between 1 to 100, independently from each other, provided that the sum l+m+p+q+r+s is an integer greater than 2 and that at least two of the indices m, p, q, r, s are greater than zero; n = 1 to 500; Y<1>, Y<2>, Y<3>, Y<4>, Y<5> are a group of general formula (CH2)a(-B)b-M<1>(-A<1>)c(-M<2>)d(-A<2>)e(-M<3>)f(-A<3>)g-R<1>, independently from each other, whereas B is for example a group having the formula  alpha , in which R<6>, R<7>, R<8> are for example H or CH3 and X is for example chlorine; R<1> is for example a straight chain alkyl with 1 to 16 C atoms; a = 2 to 20; b, c, d, e, f, g = 0 or 1; A<1>, A<2>, A<3> are for example phenylene or pyrimidine-2,5-diyl; M<1>, M<2>, M<3> are for example COO or OCO. This copolymer is particularly useful as component of liquid crystal switching devices.
Patent DE-4025358-A1 (DE)
Title: New bi:phenyl:methyl-substd. imidazole derivs.
Inventor: RIES UWE DIPL CHEM DR
IPC: C07D473/00
Filed: 1990-08-10
Abstract: Biphenylylmethyl-imidazole derivs. (I) and their 1- and 3-isomer mixtures and addn. and base salts are new. Where A1-A4 = H or CH and one or two = N; r1 = H; F; Cl; Br; OH; 1-3C alkyl; 1-3C alkoxy; amino opt. mono- or disubstd. by 1-6C alkyl, phenyl, 5-7C cycloalkyl, phenyl-1-3C alkyl or 5-7C cycloalkyl-1-3C alkyl; acylamino opt. 3-, 4-, 5-, 6- or 7-halo or hydroxy-substd. when acyl gp. is 1-7C alkanoyl; 2-4C alkoxycarbonyl; 1-6C alkanesulphonyl; benzoyl, benzenesulphonyl, 2-carboxy-cyclohexylcarbonyl, 2-aminocarbonyl-cyclohexylcarbonyl, 5-7C cycloalkylcarbonyl, phenyl-1-4C alkanoyl or 5-7C cycloalkyl-1-4C alkanoyl in which a phenyl gp, is opt. mono- or disubstd. by F, Cl, Br, CH3 or CH3O; a 3-5C alkylsultame gp.; pyrrolidino, piperidino or hexamethyleneimino opt. substd. by 1-3C alkyl, carboxyl-1-3C alkyl or oxo; opt. hydrogenated phthalimido or 2-oxo-isoindolin-1-yl; or -N(R6)-CO-N(R7)(R8); R2 = H or 1-3C alkyl; R3 = 1-6C alkyl; R4 = COOH, CN, 1H-tetrazolyl, 1-triphenylmethyl-tetrazolyl or 2-5C alkoxycarbonyl; R5 = H, F, Cl or Br; R6, R7 = H, 1-8C alkyl, 5-7C cycloalkyl, 5-7C cycloalkyl-1-3C alkyl or phenyl or phenyl-1-3C alkyl opt. mono- or disubstd. by OH or 1-3C alkoxy, or R6 + R7 = ethylene or propylene; R8 = H, 1-8C alkyl, 5-7C cycloalkyl, 5-7C cycloalkyl-1-3C alkyl, phenyl or phenyl-1-3C alkyl opt. mono- or disubstd. by OH or 1-3C alkoxy, 2-(Cl or Br)-ethyl, 3-(Cl or Br)-propyl or, when R6 + R7 = ethylene or propylene, also dialkylaminocarbonyl; except cpds. (I) where R1 = R2 = R5 = H, R3 = n-butyl, R4 = COOH and (i) one of A1-A4 = N and the remainder = CH, (ii) A2 and A4 or A1 and A3 = N and the remainder = CH, (iii) A4 = N, A3 = HO-C or CH3O-C and A1 = A2 = CH or (iv) A4 = N, A1 = CH3-C and A2 = A3 = CH.
Patent DE-4028055-A1 (DE)
Inventor: BISA KARL DR MED
IPC: C12S9/00
Filed: 1990-09-05
Abstract: 2.1. A microbial in-situ decontamination of soil contaminated with xenobiotics had previously only been carried out by applying microorganisms, in particular together with biosurfactant foams, to the surface of the soil to be treated. However, such a method only allowed the top-most soil layers to be decontaminated. The novel method and the apparatus for carrying out the method are intended to allow the soil which is contaminated with xenobiotics to be treated in-depth, if possible while retaining the naturally formed soil texture and adapted to large-scale technical requirements. 2.2. A share (3) which can be attached to a soil amelioration device (5) is equipped, on its back, with jets (10, 11) which are connected to various storage containers (6, 7) by means of pipe systems (8, 9) and which are assigned to zones of different soil depths at discrete distances from one another. The soil which is opened up by the share can be inoculated, in zones of different soil depths (1, 2, 17), simultaneously with anaerobic, aerobic and facultative-anaerobic microorganisms in each case. 2.3. In-depth microbial in-situ treatment of soil contaminated with xenobiotics <IMAGE>
Patent DE-4030524-A1 (DE)
Title: Venting value for gearbox housing - has flexible container as sleeve-shaped expansion chamber with apertures
Inventor: RAAB RUDOLF
IPC: F16H57/027
Filed: 1990-09-27
Abstract: The gearbox housing (2) venting valve (1) has a sleeve shaped expansion chamber (9) which is fixed to a venting stopper (4) and can be introduced into an opening (3) of the housing. The expansion chamber is a flexible container (10) with openings (13,14) whose outer dimensions are greater than the dia of the retaining opening (3). The number of openings is such that the oil-air mix can pass unhindered into the container and the  separated oil can flow away. ADVANTAGE - Large expansion chamber vol and efficient operation.
Patent DE-4033758-A1 (DE)
Title: Screening system for computer door - has spring strip fixed along edge that have series of contact fingers
IPC: B21D39/03
Filed: 1990-10-24
Abstract: The door of a computer hosuing has an edge (1) that is formed with a L-shaped and has a series of holes that allows a spring strip (3) to be fitted. The edges of the spring strip are formed with projecting fingers that are created by slots (8). A similar arrangement is fitted to the edge of the door frame and this provides contact. The strips are produced as metal pressings. ADVNATAGE - Simplifies arrangement of narrows contact strip.
Patent DE-4105290-A1 (DE)
Title: Communications peripheral selection information memory - with transfer of selection information indicated on optical display for use as call repetition information
Inventor: HEISING ANDREAS
IPC: H04M1/2745
Filed: 1991-02-20
Abstract: The selection information memory (LNR,SNR) stores entered call selection information, to allow the call to be repeated upon operation of a manual call repetition button, with an optical display (A2E) for the call number. The contents of the selection information memory (LNR,SNR) are fed to the optical display (AZE) for short-term display of the call number, with selective transfer to a respective memory location of a further memory upon operation of a manual button (NT) allowing use as selection information for establishing a call via the communications network. ADVANTAGE - Simple call repetition.
Patent DE-4105436-A1 (DE)
Inventor: OBERDOERFER HANS
IPC: E03C1/042
Filed: 1991-02-21
Abstract: A sanitary wall fitting (1) comprises a connection stub (3) which can be connected to the domestic pipe system. A covering collar (16) can be screwed axially onto the connection stub (3); it contains a moulded sealing ring (19) which moves together with the covering collar (16). The moulded sealing ring (19) comprises a first region (20) which seals off the covering collar (16) from the connection stub (3). A second region (21) of the moulded sealing ring (19) interacts like a thread with an external thread (7) provided on that end of the connection stub (3) which is near to the wall. <IMAGE>
Patent DE-4106714-A1 (DE)
Title: Electrical plug connector - has two main parts fitting together with sealing element between them
Inventor: DRECKER FRANK
IPC: H01R13/52
Filed: 1991-03-02
Abstract: The electrical connecting plug has a base section (11a) with holes (49) that receive the pin contacts of anotehr element. The top section (2) is shaped to receive the cup shaped base and has formed chambers (12) for the contacts. The chambers extend into circular hole sections. The outer periphery is formed with a '''' shaped recess (30) that is shaped to receive an oval shaped sealing element (4) of flexible material. A retaining element (5) is pushed into position and engages with the seal on the face (25). ADVANTAGE - Retains seal securely in body of plug.
Patent DE-4106739-A1 (DE)
Title: Hydraulic ract=and=pinion steering gear - has both unions screwing axially into insert at free ram end
Inventor: RIEGER WOLFGANG
IPC: B62D5/22
Filed: 1991-03-02
Abstract: The hydraulic rack-and-pinion steering gear incorporates a ram (5) with a piston (4) coaxial with the rack and coupled to it, chambers (7, 8) on opposite sides of the piston being pressurised alternately, while the cylinder ends are sealed by inserts (15, 16).  Oil under pressure is delivered into the cylinder via pipe unions (20, 21). Both unions screw in the axial direction into the insert (16) at the ram free end. A T-shaped locking plate (33) prevents the insert from sliding or turning, its arms (34, 35) engaging in An annular groove (38) in the insert, while its upright (36), at right angles to them, fits in a groove (41) in the cylinder. A screw (37) secures the plate to the insert. USE/ADVANTAGE - Reliable and compact mounting of unions.
Patent DE-4106922-A1 (DE)
Inventor: BEYER MICHAEL DR
IPC: B09C1/02
Filed: 1991-03-05
Abstract: Proposed is a method of reconditioning soil, in which contaminants in the soil are removed by washing, screening, gravity separation and/or flotation. Before reconditioning, the content of organic contaminants, in particular polycyclic hydrocarbons, and the proportion of lightweight material and fine-particulate material is determined. An adsorption agent is then added as a function of the organic-contaminant and lightweight-material contents thus determined, and the adsorption agent is intimately mixed with the soil.
Patent DE-4108109-A1 (DE)
Title: Absorbent pads for babies napkins - are made in continuous strip with transverse lines of perforations
Inventor: KRIEGER KLAUS
IPC: A61F13/15
Filed: 1991-03-13
Abstract: The absorbency of babies' napkins is increased by means of absorbent pads. These pads have outer layers of material which is permeable to moisture whilst the interior is filled with a specially absorbent material such as Irreversible Super-absorbent material. The pads are produced in a continuous strip with transverse lines of perforations to enable individual pads to be detached. The pads can be used either with disposable napkins or with conventional napkins. When used with conventional napkins only the pads need to be discarded thus reducing the volume of material to be disposed of. USE/ADVANTAGE - Babies' napkins with disposable absorbent pads.
Patent DE-4111635-A1 (DE)
Title: Vehicle external rear view mirror - comprises housing mirror plate and tangential guide for travel wind hitting mirror plate
Inventor: MUELLER HANS
IPC: B60R1/06
Filed: 1991-04-10
Abstract: The air guide device causes a part of the travel wind striking the mirror housing to be deflected tangentially over the sight surface of the mirror plate. This guide device (3) is formed by an air guide channel (9) adjacent to the housing (1) with a deflector (11) on its end side in the direction of air flow (13). The cross-section of the air guide channel narrows nozzle fashion (13) in the flow direction of the wind, and a wall of the channel is formed by a part (8) of the housing (1). The entry aperture of the air guide channel is closable. The air guide channel is formed as an open channel connected to the housing, and pivotable between unused and used positions. It is located between the housing (1) and an adjacent vehicle bodywork area. USE - As a travel wind air deflector for an external rear view mirror on a road vehicle.
Patent DE-4117990-A1 (DE)
Inventor: WETZEL MATTHIAS
IPC: B26B19/38
Filed: 1991-06-03
Abstract: The invention relates to an electric shaver with short-hair cutting systems (2) fitted on a housing (1) and at least one sliding actuating switch (9) fitted on the housing (1) to set a long-hair cutting system (4) from an "off" position to at least one or more operative positions. The long-hair cutting system (4) is adjustably fitted on the housing (1) in such a way that it follows the surface of the skin.
Patent DE-4120928-A1 (DE)
Inventor: UNTERDERWEIDE ARTUR
IPC: B22C9/12
Filed: 1991-06-25
Abstract: The invention relates to a process for hardening sand castings, especially for foundries, in which a stream of vehicle and hardening gas is led several times in a circuit through the sand casting. It is the object of the invention to design the process in such a way that it works without exhaust air and thus renders expensive purification measures unnecessary. According to the invention, this aim is achieved in that a quantity of hardener gas is used which represents the theoretical quantity for a full hardening reaction or exceeds it only slightly. Said quantity of hardener gas is circulated in a primary gas supply circuit (1) passing over a source (10) of hardening gas until said quantity of hardening gas is present in a part of the primary gas supply on circuit (1) which is at the same time part of a secondary gas supply circuit (2), whereupon the primary gas supply circuit (1) is closed, the secondary gas supply circuit (2) is opened and operated in circulation until the hardening reaction has been fully completed.
Patent DE-4126740-A1 (DE)
Title: Monitoring circuitry for potential level on electrical conductors -  has one or more comparators with controllable hysteresis shifted by delay element
Inventor: SCHRABAL GERHARD
IPC: H03K3/0233
Filed: 1991-08-13
Abstract: A circuit for monitoring the potential level on electrical conductors contains a comparator with controllable switching hysteresis and a delay element connected after the comparator. The comparator's switching threshold is shifted according to the output of the delay element. Alternatively, the circuit can contain at least two comparators (ST1a-ST1n) whose outputs are each connected to an input of a logical combination circuit (AND1) which drives a delay element (VG). Each comparator's threshold is shifted according to the output signals of the comparator and of the delay element. ADVANTAGE - Can respond to potential changes.
Patent DE-4127369-A1 (DE)
Title: Moving coil loudspeaker housing producing improved sound through less vibration - mfd. from reduced number of components using recycled plastic contg. high proportion of polyethylene@
Inventor: KAROFSKY HORST
IPC: H04R1/02
Filed: 1991-08-19
Abstract: Loudspeaker housing is mfd. from recycled plastic contg. high levels of polyethylene. Plastic mixture has little detectable natural frequency and can be worked easily on woodworking machines. Mouldability of the material enables ideal shapes to be produced, reducing the number of components and vibration. Material savings can be made in respect of acoustic damping. USE/ADVANTAGE - Housing is used for moving coil loudspeakers, can be shaped to produce improved sound through less vibration and is mfd. chiefly from scrap or waste material
Patent DE-4130457-A1 (DE)
Title: Processing clarified sludge for gas prodn. and reusable prodn. e.g. for cement - by dewatering and thermal decomposition of organic component with coal
IPC: C10J3/02
Filed: 1991-09-13
Abstract: Process and appts. for processing clarified sludge by dewatering and thermal treatment until decomposition of the organic components. The dewatered and particulate clarified sludge is fed to a coal gasification reactor into which a gasification agent is fed chosen from air, nitrogen, oxygen, steam or carbon monoxide, simultaneously with solid fuel. The obtd. mixt. is heated at at least 900 deg.C. pref. at least 1000 deg.C. to convert the solid fuel and clarified sludge into ashes. The released gases and steam are trapped and the ashes from the fuel and sludge are removed from the reactor. ADVANTAGE - A simple process which allows prodn. at least partly, of gases and of materials which can be disposed of without problems or reused or reprocessed.
Patent DE-4134692-A1 (DE)
Title: Wave-powered electrical generation plant - has floats used to drive reciprocating piston air compressors
Inventor: EHLKE FRITZ
IPC: F03B13/18
Filed: 1991-10-21
Abstract: The generation plant has a frame (2) extending between or among pontoons (1), supporting reciprocating piston air compressors (3) controlled via floats (8) which move up and down with the sea level. Pref. the cylindrical reciprocating floats can run along vertical guide rails (10) via attached rollers (9), each coupled directly to a piston rod (5) of a respective air compressor, the guide rails (10) being joined together at their bottom ends, for improved stability. The top of the frame may have solar panels for additional energy generation. ADVANTAGE - Prevents environmental pollution.
Patent DE-4139699-A1 (DE)
Title: Swivelling plough assembly - has movable or partially movable mould boards or additional guide blades
Inventor: HEUER-BROCKMANN GUENTHER
IPC: A01B15/08
Filed: 1991-12-02
Abstract: The guide blades can be movable or partially movable and parts of the mould board and guide blade may be controlled.The board can be adjustably mounted on the frame.Part of this board can be adjustable over the rest plate or the plough blade. The board can be thickened over its leading edge. ADVANTAGE - Plough bottom is changed to enable work in heavy soil.
Patent DE-4139851-A1 (DE)
Title: Novel colour-developing materials - comprise substd. benzo:pyrano:thio:-xanthene:di:oxide(s)
Inventor: BALLI HEINZ PROF DR
IPC: B41M5/323
Filed: 1991-12-03
Abstract: Substd. benzopyranothioxanthene dioxides of formula (I) are new, where R1, R2, R3 and R4 = H, up to 12C alkyl opt. substd. by halogen, hydroxyl, cyano or lower alkoxy, 5-6C cycloalkyl or phenyl or benzyl opt. substd. by halogen, nitro, lower alkyl or lower alkoxy or R1 and R2 or R3 and R4 together with the N atom form a 5- or 6-membered heterocyclic gp., V1 and V2 = H, halogen, lower alkyl or lower alkoxy, X and Y independently = C or N, Z = N, NH or a C or N atom substd. with a lower alkyl or aralkyl gp., the rings A and B are opt. substd. with a halogen, nitro, lower alkyl, lower alkoxy, phenyl, phenoxy or amino gp., the amino gp. opt. mono- or di-substd. with lower alkyl, lower alkylcarbonyl, phenyl or benzyl gps., and the ring d = a condensed, 5-membered, N-contg. heterocycle. Pref. R1, R2, R3 and R4 = lower alkyl, ring B = non-substd. or mono- or di-substd. by halogens, lower alkyl or lower alkoxy gps., and ring d = a pyrrole, pyrazole or imidazole ring. USE- Useful as colour developers in pressure-sensitive or heat-sensitive recording materials which are readable in the IR-region, giving green-blue, blue or green colours.
Patent DE-4200553-A1 (DE)
Title: Springing for cushion of shape memory alloy - combined with second conventional or other shape memory alloy spring
Inventor: RENZ RAINER DR ING
IPC: A47C27/06
Filed: 1992-01-11
Abstract: Springing for cushion (1), in seats or mattresses, consists of parallel loaded, pref. concentric springs, of which are (7) is of shape-memory alloy and the other (8) is either of conventional spring steel or another shape-memory alloy which is in another structural state at the temp. of use. A chain (6) defines the maximum extension of the spring and produces a prestress. ADVANTAGE - Characteristics can be adapted to improve comfort.
Patent DE-4203687-A1 (DE)
Inventor: BERGER BERND DR ING
IPC: B21B37/74
Filed: 1992-02-08
Abstract: The invention relates to a coolant and lubricant installation for rolling mills (1) in which material to be rolled, especially strip (2), is rolled in reversing mode. In order to be able to supply the rolling mill (1) with highly pure coolant and lubricant by means of an economical coolant and lubricant installation, the coolant and lubricant returned from the rolling mill (1) into a collector tank (11) is purified by a filter installation (12) in the main flow and taken to a storage tank (8) from which the purified coolant and lubricant may be fed back to the rolling mill (1). Only as much coolant and lubricant is supplied to the rolling mill (1) as is needed for cooling and lubrication and even then only when it is absolutely necessary. The filter installation (12) is matched to the average volume flow of purified coolant and lubricant to be supplied to the rolling mill (1).