baber/WOPTO huggingface dataset:
Patent DE-3943094-A1 (DE)
Title: Electrophotographic image prodn. process - using multilayer amorphous silicon system as light collecting element
Inventor: YAMAZAKI KOJI
IPC: G03G13/08
Filed: 1989-12-27
Abstract: An electrophotographic image generating process of regulated speed is carried out in a system comprising a light source, an optical system, a light collecting element, a main corona charging unit, a latent image forming mechanism, a toner-contg.  developing mechanism, a transfer sheet feed  mechanism, a transfer charging unit, a sepn. mechanism, a transfer-sheet transport mechanism, a fixing mechanism, a cleaning mechanism and a charge eliminating light source. The novelty comprises the use, as the light collected element, of an amorphous silicon system and, as toner, of a fine particle insulating toner with a vol. mean fineness of 4.5-9 microns and an apparent viscosity (at 100 deg C) of 1 x 10 - 2 x 10 dPa.s. The amorphous silicon system consists of a substrate having, in sequence: (i) a photoconductive first layer of an amorphous material contg. silicon atoms as matrix and hydrogen and/or halogen atoms; (ii) a latent image carrying second layer of an amorphous material contg.  silicon atoms as matrix, carbon atoms, gp. III element atoms and hydrogen and/or halogen atoms; and (iii) a developed image carrying third layer of an amorphous material contg. silicon atoms as matrix, carbon atoms and hydrogen and/or halogen atoms. USE/ADVANTAGE - The process is useful for high speed electrophoto-graphic copiers and for laser prints. It provides high speed prodn. of high quality copies even from originals with ultra-fine lines and/or complicated very small chinese script. High quality full-colour copies can also be  obtd.
Patent DE-3943266-A1 (DE)
Title: Double-security theft alarm device for bicycle stand - incorporates integrated audible alarm with batteries and switch operated by plunger when max. angle is exceeded
Inventor: GRUENBERG KARL FRIEDRICH VON
IPC: B62H5/20
Filed: 1989-12-29
Abstract: The stand (7) is hinged (3) to a holder (2) which is fixed to the frame of the bicycle and carries a lock (1) with a bolt driven into a bore (13) through the stand (7) when the latter is deployed to take the wt. of the machine on its foot (8). A plunger (12) driven against a spring (11) makes contact with an attitude switch (5). Beyond a max. angle of the pivot, (3), an alarm siren (6) draws current from batteries (9) in the stand (7). ADVANTAGE - Effective alarm circuit is substd. for cable which could be disconnected easily by force.
Patent DE-4004749-A1 (DE)
Title: Laser diode with double hetero-structure and side current limiting - has active layer with strip formed profile aligned with blocking layer
Inventor: THULKE WOLFGANG DR
IPC: H01S5/227
Filed: 1990-02-15
Abstract: The laser diode has a substrate (1) of an 'n' conducting type, e.g. InP, that supports a cover layer (2) that is also 'n' conducting impregnated. An active layer (3) is then formed that has strips (31, 32). A second cover layer (4) has corresponding regions (41, 42) and is of a 'p' type conducting material. A blocking layer (5) of 'n' conducting material, such as In.Ga.As.P is formed and etched to create a strip region (50) that is projected vertically above the active region (31) and is symmetrical. The unit is completed by a cover layer (6), oxide layer (10) and metal contact surface (7).
Patent DE-4005928-A1 (DE)
Title: Stable polycarbonate coating compsns. - contain 100 pts. wt. polycarbonate resin and 500-1000 pts. wt. solvent which contains at least 58 wt. per cent dioxan
Inventor: SAKAGUCHI JUNEI
IPC: C09D169/00
Filed: 1990-02-25
Abstract: Coating compsn. (I) contains 100 pts. wt. polycarbonate resin (II) and 500-1000 pts. wt. of a solvent (III) which contains at least 58% dioxan (w.r.t. wt. of (III).  (III) is entirely dioxan, or (III) also contains other component(s), namely ether(s), ketone(s) or halogenated hydrocarbon(s); (III) also contains a light-sensitive organic cpd. (IV) and pref. the other component(s) as above, esp. THF, cyclohexanone, dichloroethane or dichloromethane; (II) has mol. wt. 24,000-30,000; (I) 8-13 wt.% (IV). USE/ADVANTAGE - (I) is useful e.g. for the prodn. of protective coatings, charge transfer layers for electrophotographic materials, etc.. The compsn. is stable in storage unlike prior-art PC coatings compsns. with THF as solvent, which tend to gel in storage, forming a viscous liq. which eventually forms conglomerates or aggregates.
Patent DE-4011494-A1 (DE)
Title: Electronic multiplier with unidirectional result shift register - has control mechanism and circuits controlling change from normal to abbreviated mode
Inventor: MERKLE PAUL
IPC: G06F7/491
Filed: 1990-04-09
Abstract: An electronic multipler circuit, which adds partial products to form a total intermediate product, contains a unidirectional result shift register. Each main cycle is fully completed and the number of cycles is limited to the number of multiplier numbers. The pulse counter is only operated until the last multiplicand of the current main cycle has been processed. The first change-over from normal to abbreviated operation is controlled by the outputs (d,i) of the pulse counter (11a) and another circuit (60a).
Patent DE-4011911-A1 (DE)
Title: Double door made of plate - incorporates vertical closure fillet on one door engaging behind other to protect against dust
Inventor: HEDFELD JOACHIM
IPC: B21D53/74
Filed: 1990-04-12
Abstract: The door panels include a closure fillet and consist of a one-piece plate part. The vertical door edges comprisea inwardly pointing quadrilateral profiles, with terminating webs (31) parallel to the front plate (32). The closure fillet is formed by parts (36, 37) included in the quadrilateral profile, and is angled backwards in relation to the quadrilateral profile of the other door. The horizontal door edges have backwardly facing U-profiles or quadrilateral profiles which abut with the horizontal quadrilateral profiles of the vertical door edges with mitring on the rear side. USE - For apertures requiring double doors, to one of which is attached a closure fillet.
Patent DE-4021644-A1 (DE)
Title: Paper punch positioning guide - has one piece spring clip mounted on base and locking into spaced holes in guide rail
Inventor: PFLUGFELDER THEODOR
IPC: B26F1/36
Filed: 1990-07-06
Abstract: A strip (16) is bent symmetrically about the middle to produce a roof-shaped spring clip with side walls (20) and turned up feet (24), which is fastened to the base (32) of the punch. At the top of the spring clip is a rounded protruberance (26), which can enter spaced holes (12) in a channel section rail (14) positioned above the spring clip at a height allowing some compression, so that the protruberence (26) snaps into the locating hole without play as the punch is moved into position. ADVANTAGE - Easily producible, low-cost accurate positioning system.
Patent DE-4029234-A1 (DE)
Title: Prefab toilet cubicle -  can be fitted either into right-hand or left-handcorner of room
Inventor: GRUMBACH EMIL
IPC: A47K4/00
Filed: 1990-09-14
Abstract: The toilet cubicle is designed to fit in either a left-hand or a right-hand corner of a room. The cubicle has four walls with each wall consisting of one wide part (2) and one narrow part (2a) with the two parts inclined at 45 deg. to each other. Each wall extends to the height (13) of the room or to the height (14) of the cubicle. The walls are joined to each other by butt joints which are secured by adhesive or by mortice and tenon joints. USE/ADVANTAGE - Prefab. toilet which can fit in a right or left-hand corner.
Patent DE-4033252-A1 (DE)
Title: Contactless distance measurement in air - is unaffected by dust, using ferromagnetic sensor element, measurement and reference coils, with differencing, amplifying and filtering circuit
Inventor: DEPPISCH BERTOLD PROF DR RER N
IPC: G01D5/22
Filed: 1990-10-19
Abstract: The appts. is for contactlessly measuring displacement positions. It uses a ferromagnetic sensor element (11) in the region of influence of a measurement coil (10). The position of the sensor element is determined from the voltage on the measurement coil. A base voltage is induced in the measurement coil, and in a reference coil (9) outside the region of influence of the sensor element, by a transmission coil and at least one constant current source. The coil signal difference is amplified and filtered for use in position-dependent control. USE/ADVANTAGE - For precise, contactless measurement of position in air unaffected by the presence of dust.
Patent DE-4039702-A1 (DE)
Title: Sheet feed system suitable for photosensitive film - uses roller pair with integral drive motor e.g. for image recorder and reader
Inventor: OHKODA KEIJI
IPC: H04N1/12
Filed: 1990-12-12
Abstract: Sheets of material, e.g.film, are fed from a magazine stack by a suction unit and into a feed stage with a roller and belt loop that changes the direction of feed. The sheets pass through guides and enter a driven roller-contact roller pair. The driven roller (1) forms part of an integral motor unit and acts as the rotor with bearing supports (13a,13b) at the ends. A rotor block (6) is located within a coil (5) fixed to a stator assembly (2) that forms part of a housing (2a). The end of the shaft has an encoder (7) with a sensor (9) mounted to provide position data. ADVANTAGE - High conveyance precision. Unit releasably mounted, making servicing simple.
Patent DE-4104929-A1 (DE)
Title: Producing steel fibre reinforced concrete - by using old steel cord reinforced tyres as source of fibre, ensuring uniform distribution of fibre in concrete
Inventor: SCHMIDT PETER
IPC: E04C5/01
Filed: 1991-02-18
Abstract: Prodn. consists of mixing steel fibre bound together in rubber with non-inflammable solid concrete components. The rubber is then burnt off as the mixt. is mechanically stirred and after cooling, possible fluxing and/or additive agents together with cement and water are added to form the concrete in the usual way. USE/ADVANTAGE - Producing industrial concrete floors, aircraft landing runway, wear-resistant coatings for concrete roads, renovating floors, parts for garages, concrete safes, bridge coatings and concrete tubes. Enables a uniform dispersion of the steel fibres inside the concrete
Patent DE-4104952-A1 (DE)
Title: Producing table and cover plates - using core plate of wood, top surface layer and plastics edge protection engaging over top side with edge fillet
Inventor: MEIER MAX
IPC: B29C70/84
Filed: 1991-02-18
Abstract: On the underside of the plate are functional construction components (9) formed from gap-filling plastics (10) with which they are moulded in one piece. The gap between the frame (6, 8) and the coreplate (2), with formation of a closed cover in intersectional surfaces (3) is partly filled, and between the cover and the frame ribs (14) are arranged. Between the intersectional surfaces (3) and the underside of the core plate is arranged a fillet (12) engaging over the edge (11) there, and made of the plastics (10) which fills the gap. The fillet (12) forms a union between the plastics (10) filling the gap and the functional construction components (9). The frame (6, 8), the gap-filling material (10), and the functional construction components (9) consist of the same plastics material. USE/ADVANTAGE - The prodn. of a plate, for a table or cover purposes, using a method which has a shortened work cycle, producing a product which is trouble-free technically and aesthetically.
Patent DE-4107645-A1 (DE)
Title: Thiocyanate-modified epichlorohydrin-contg. polyether(s) prepn. - by reaction of epichlorohydrin-contg. polyether with excess alkali thiocyanate in presence of di:ethylene glycol di:methyl ether
Inventor: DANNHORN WOLFGANG DIPL CHEM
IPC: C08G65/326
Filed: 1991-03-09
Abstract: The prodn. of thiocyanate-modified epichlorhydrin-contg. polyethers (I), by reaction of 1 mol. epichlorhydrin-contg. polyether (II) with 4-20 mols. alkali thiocyanate (III) at 40-130 deg.C in the presence of diethylene glycol dimethyl ether (diglyme). Pref. (II) contain 30-70 wt.% epichlorhydrin (IV) and are obtd. by polymerisation of (IV) alone or with alkylene oxides, pref. EO; examples are Herchlor H and C (RTM); pref. reaction is carried out with 7-15 mols. KSCN at 85-105 deg.C in presence of 95-90 wt.% diglyme (w.r.t. polymer); the prods. (I) are vulcanised, e.g. with ETU, Pb cpds./MgO etc., USE/ADVANTAGE - (I) are useful for the prodn. of elastic mouldings. Modification of (II) as above gives polyethers (I) with very good oil resistance (for prodn. of tubes, seals etc.,) without adversely affecting the glass transition pt.
Patent DE-4108008-A1 (DE)
Title: Headlamp with bifocal parabolic reflector for motor vehicle - projects visible dipped beam in conjunction with horizontal beam of filtered UV emission from discharge lamp
Inventor: CHIRIO ROBERTO
IPC: F21V11/16
Filed: 1991-03-13
Abstract: The discharge lamp (3) is installed at one focus (8) of the composite reflector (2) which has an elongated upper section (4) and a shortened lower section (6) with a common optical axis (5). The upper section (4) having its focus (7) behind the lamp (3) reflects a dipped beam (18). The lower section (6) is irradiated with ultraviolet emission through a filter (17) on the underside of the lamp (3), opaque to visible light. The main beam (19) renders fluorescent objects visible without dazzle. ADVANTAGE - At least part of ultraviolet emission is utilised to improve visibility at long distance e.g. in fog.
Patent DE-4115012-A1 (DE)
Title: Suction system for IC engine - has two resonance pipes emerging from fresh gas distributor
Inventor: VOIGT DIETER DIPL ING
IPC: F02B27/02
Filed: 1991-05-08
Abstract: The resonance pipes (10,11) issue into a manifold, from which vibration pipes run to the individual combustion chambers of the engine. A cut-off component is in its open position in a high speed range of the engine, and in a middle speed range in its closed position. This component is fitted centrally in the longitudinal direction of the manifold. The outlet points of the resonance pipes in the fresh gas distributor (13) are opposite one another, maintaining a distance (20) in the area of the fresh gas input feed (14), and a valve (22) is provided to bridge over this distance (20) in a low speed range of the engine. USE/ADVANTAGE - An induction system for an IC engine which does not require additional space for its incorporation.
Patent DE-4117669-A1 (DE)
Inventor: BRUNS KLAUS PROF
IPC: A61K8/33
Filed: 1991-05-29
Abstract: The invention concerns the use, as odoriferous substances, of isomeric 1,1,1-trialkyl-2-phenylethane derivatives of general formula (I), in which R<1> to R<3>, independently of each other, are alkyl groups with 1 to 3 C-atoms and R<4> is hydrogen or an alkyl, acyl, alkoxycarbonyl or alkoxyalkyl group with a total of 2 to 5 C-atoms. These compounds, in particular the 2,2-dimethyl-1-phenylpropyl ester of acetic acid, have a complex rosy/woody character and high scent-emanation power, and can be mixed with each other or with other odoriferous substances in widely varying proportions, generally 1-70 % by wt. relative to the overall composition, to give new fragrances. These compositions can be used for perfuming cosmetic preparations and industrial products, as well as in alcohol fragances.
Patent DE-4118831-A1 (DE)
Title: Prevention of organic growth in the underwater region on steel structures and ships - uses an electric anticorrosion installation where the application of the DC voltage produced is timed
IPC: C23F13/00
Filed: 1991-06-07
Abstract: Method for prevention of organic growth in the underwater region on steel structures and ships, with the use of an electric anti-corrosion installation, is characterised by the fact that application of the d.c. voltage produced by means of a rectifier is timed. The electrical anti-corrosion installation contains a rectifier and at least one external current anode, and respectively a measuring electrode. The rectifier (2) is connected with the external current anod (3) via an adjustable timer (7). It is also connected with a measuring electrode (5) via a measurement result evaluator (6) and a regulator (8). USE/ADVANTAGE -Can be used with ships and steel structures partly or fully submerged. In comparison with the traditional anti-corrosion installations, it is more effective in preventing the formation and hindering the development of organic growths.
Patent DE-4126126-A1 (DE)
Inventor: TREFZ WALTER
IPC: B01D29/01
Filed: 1991-08-07
Abstract: Described is a filter element and a method of manufacturing it. Embossed along the fold lines in the filter element are flat zones (3) which ensure that a given distance is maintained between the folds.
Patent DE-4126376-A1 (DE)
Title: Monitoring sensor for temp.-dependent wear and ageing - uses material, e.g. layers of zircon and nickel@, whose speed of ageing depends on temp. and is electrically measurable
Inventor: THOMAE ACHIM DIPL PHYS DR
IPC: F16H59/68
Filed: 1991-08-09
Abstract: The sensor includes a section having an electrically measurable material property (pref. electrical conductivity) which changes irreversibly at a rate dependent on temp. The sensor pref. has at least one pair of adjacent layers of different materials, one of which is capable of temp-dependent diffusion into the other to produce a permanent conductivity change in the diffusion zone. Pref. the materials are transition metals, esp. Zr and Ni, in the form of vapour deposited layers on a substrate or in the form of foils which are pref. wound into a coil. The layers are pref. at least 0.5 microns thick. The sensor part is pref. gas-impreviously encapsulated, esp. in a protective gas or vacuum. USE/ADVANTAGE - Components subjected to heavy thermal loading, e.g. motor vehicle clutch or brakes. Reliability achieved by using solid state amorphisation effect with inherent measurement storage requiring no external circuitry.
Patent DE-4129113-A1 (DE)
Title: Foreign body detector for intake of harvesting machine - has threshold switches in two channels handling signals from metal detector and compression roller position potentiometer
Inventor: DIEKHANS NORBERT DR ING
IPC: G01V3/11
Filed: 1991-09-02
Abstract: The signal from an inductive metal detector (1), installed in the intake feed roller opposite the compression roller, is amplified (1V), filtered (1F), rectified (1G) and applied to a threshold switch (1S) which arrests (11) the feed roller when a predetermined threshold of signal is exceeded. Each roller carries a tachometer (3,30) from which a speed signal (GS,GS1) is derived for adjusting the gain of the signal amplifier (1V) and its counterpart (4V) in the positional signal channel. ADVANTAGE - Trigger sensitivity of metal detector is largely independent of quantity and speed of intake of harvested material.
Patent DE-4134185-A1 (DE)
Title: Cold circular saw with stabilised blade - has roller in frame bearing against ramp face on arm pressing shoe against blade.
Inventor: AMRATH HANS
IPC: B23D47/00
Filed: 1991-10-16
Abstract: The saw blade (1) works between shoes, that (17) bearing against its rear side are fixed in position, whereas the front one (3) is at an adjustable distance from the rear one, and is mounted on an arm (4). The arm is supported at points spaced apart (6, 3), one with a clamping device pressing the shoe against the blade. The arm has a ramp face on the outside, over which a roller (6) or slide moves. The latter is accommodated in a holder (5) attached to the machine frame, table or gearbox (11), and bears against the arm so as to press the shoe against the blade. The fan can consist of a sector of a cylinder. The roller can be of oval cross-section, with a recess in the side away from the arm for a protrusion on the holder, so as to rock in the latter. ADVANTAGE - Low cost, reliability, easy operation, and accurate guidance of blade irrespective of thickness.
Patent DE-4134910-A1 (DE)
Title: Re-use of old construction material - by breaking up material into small particles which are mixed with binding medium
Inventor: KLAUSMANN HANS
IPC: E01C5/06
Filed: 1991-10-23
Abstract: Polluted old construction material, especially old road surfacing material, is made available for re-use in the following way. The material is broken up into small particles and is then mixed with a binding medium such as cement. The size of the individual particles is such that the area of the fracture surfaces amounts to at least 20 to 25 percent of the total surface. A water repellent additive may be added to the mixture before it is used to make reconstituted stone blocks. The process prevents the escape of any pollutant, such as oil or chemicals, from escaping into the atmosphere when the material is re-used. USE/ADVANTAGE - Re-use of old construction material without risk of causing pollution.
Patent DE-4136941-A1 (DE)
Title: Mounting for motor vehicle bonnet badge - has space into which emblem can be lowered to prevent theft
Inventor: RENZ TILMANN
IPC: B60R13/00
Filed: 1991-11-11
Abstract: The identification emblem is for a vehicle, especially a corporate identity emblem, which after mounting projects above a surface of the vehicle. A hollow space (18) is formed below the emblem (10) and within the vehicle (8) into which the emblem can be withdrawn by a pneumatic, hydraulic, electric or magnetically driven lift. ADVANTAGE - Security system which prevents the forcible removal of car emblems by collectors.
Patent DE-4141587-A1 (DE)
Title: Motor vehicle headlamp with conductive track around sleeve - is safeguarded by automatic disconnection of high=voltage supply to discharge lamp when sleeve is broken
Inventor: STEIN JUERGEN DIPL ING
IPC: F21V23/00
Filed: 1991-12-17
Abstract: A discharge lamp (16) is a ceramic lampholder (14) is connected (18) to a high-voltage supply. Its bulb (17) projects into a plastic or metallic reflector (10) and is shielded by an ultraviolet-absorbent glass sleeve (20) set into a retaining ring (36). A conductive track (24) around the outside of the sleeve is in contact (26) with a wire (30) from the high-voltage connection which safeguards the operation of the lamp. ADVANTAGE - Conductive track cannot be touched or seen from outside headlamp unit, but in any collision is decisively broken to disconnect the discharge lamp supply.
Patent DE-4214690-A1 (DE)
Title: Slot cover for shield support - comprises angled side metal plates for cap and break shield held in place by several spring loaded guide bolts
Inventor: MEISSNER HORST
IPC: E21D23/00
Filed: 1992-05-02
Abstract: The angle plates (9) are fitted on either side of the top of the cap and break shield by a number of spring loaded bolts and brackets in pairs (12), with its horizontal member (10) along the top surface of the cap and the break shield and its vertical member (11) masking their sides. Parallel guides (16) with inward projecting ribs (18) are welded to the inner surface of the horizontal member (10). Round steel bolts (13) with a circular groove (19) near one end aligned horizontally towards the centre of the cap and kept apart by a coil spring, are held captive by virtue of the groove fitting in between the ribs (18). The bolts are kept in portion from above by a bar (20) welded to the underside of the horizontal member of the angle plate. USE/ADVANTAGE - Slot cover for shield support is standardised and easily fitted.
Patent DE-4223223-A1 (DE)
Title: Air intake protection for engine of mine-clearing vehicle - uses angled suction shaft to divert solid particles from cooling fans
Inventor: LENZ OLAF DIPL ING
IPC: B60K11/08
Filed: 1992-07-15
Abstract: The protective arrangement has a suction grating (5) for the intake of cooling air arranged on the rear side (4) of the vehicle and screened by a protective wall (14) set at angle to form a tapering suction shaft (13). The narrow end of the shaft opposite the shaft inlet opening is continued as a separation channel (13) for the removal of solid particles. The separation channel is fitted with an independent suction blower (18). USE/ADVANTAGE - Air intake protection for engine of mine-clearing vehicle ensures the effective diversion and removal of earth, sand and dust present in the air surrounding the vehicle.