baber/WOPTO huggingface dataset:
Patent DE-3915861-A1 (DE)
Title: Pneumatically operated central locking system - IS for motor vehicles and has two rolling diaphragms installed in common housing
Inventor: SEITZ RAINER
IPC: E05B51/02
Filed: 1989-05-16
Abstract: The centrally controlled locking system of a motor vehicle is pneumatically actuated by two rolling diaphragms (5,6) installed in a common housing (1). The housing (1) has a connection (2) for connecting to a source of pressure or vacuum. The rolling diaphragm (5) is connected to the locking rod and has a much larger effective area than the other rolling diaphragm (6) which actuates the rod (4) of the antitheft device. This difference in effective areas of the diaphragms (5,6) ensures that the lock is actuated before tha antitheft device. USE - Central locking for motor vehicles.
Patent DE-3917276-A1 (DE)
Title: Measuring device for a cassette apparatus
Inventor: KOPP MICHAEL
IPC: G11B27/34
Filed: 1989-05-24
Abstract: Measuring device for a cassette apparatus, in particular for determining measurement data concerning a recording carrier located inside a cassette, having an optical information output device, the measuring device and information output device being provided inside the cassette and the information output device being fitted behind a window provided inside the cassette for looking into the cassette interior when the cassette has been loaded into a recording or playing apparatus, the recording carrier exhibiting regular changes in the direction of movement which can be picked up by a measuring transducer provided inside the cassette. <IMAGE>
Patent DE-3922741-A1 (DE)
Title: Polyepoxide and polyphenylene ether/polyepoxide preparations which can be used for the production of printed circuit boards
Inventor: HALLGREN JOHN EDWARD
IPC: C08G59/14
Filed: 1989-07-11
Abstract: The invention relates to partially cured preparations prepared by the reaction between at least one bisphenol polyglycidyl ether, at least one epoxidised novolak and at least one brominated bisphenol in the presence of a triarylphosphine catalyst. These preparations can be used for the preparation of resin mixtures with polyphenylene ethers which, in combination with further components, can be employed for the production of laminates which can be used as printed circuits and have excellent physical and electrical properties.
Patent DE-3937468-A1 (DE)
Title: Re-extn. of iron from organic soln. contg. citrate ester extractant - by pptn. in the aq. phase as iron phosphate by mixing with aq. phosphoric acid at 50-90 deg. C and iron:acid mol. ratio 1:2-4
Inventor: SCHWAB WERNER DR
IPC: C22B3/32
Filed: 1989-11-10
Abstract: A process is claimed for the re-extn. of iron from the Fe-contg. phase of a solvent extn. process, which contains citric acid partial ester(s) of formula (I) as extractant, dissolved in an organic solvent. The process comprises complete pptn. (as far as possible) of the Fe in the aq. phase as Fe phosphate (II), by mixing the organic phase with aq. H3PO4 at 50-90 deg. C, with mol. ratio Fe:H3PO4 = 1: (2-4). R1, R2, R3 = H, 4-20C linear or branched alkyl, or a metal atom; at least one or at most two of these R gps. = alkyl. Pref. re-extn. is carried out for 5-20 (esp. pref. 10-15) mins. at 60-80 deg. C, with mol. ratio Fe:acid = 1:(2.2-3). USE/ADVANTAGE - The process (`iron stripping') is useful for recovering iron from solns. obtd. by selective liq./liq. extn. of Fe from aq. solns. with the aid of solns. of (I); the process enables complete re-extn. of Fe in a short time, and does not require expensive equipment (centrifuges, etc.; contrast prior-art processes); (II) is pptd. in a very pure state and can be immediately re-used.
Patent DE-3940958-A1 (DE)
Title: Actuating tractor mounted equipment - involves hydraulic motor connected to one or two hydraulic pumps
Inventor: SCHUMACHER WERNER DIPL ING
IPC: A01B63/10
Filed: 1989-12-12
Abstract: The hydraulic motor (11) for actuating equipment mounted on an agricultural tractor, is normally supplied with hydraulic fluid from a reservoir (13) and a pump (12) with the flow of hydraulic fluid from pump (12) to motor (11) being controlled by the valve block (10). A second hydraulic pump can be brought into use when required. This second pump is connected to the valve (15) which is installed in the valve block (10). The valve (15) is actuated when required by applying control pressure to the separate valve unit (49). USE - Tractor mounted hydraulic equipment.
Patent DE-3942520-A1 (DE)
Title: Metallic clamp connecting cables - has main body of inexpensive material and inner lining of highly conductive metal
Inventor: HENNIGER DIETER
IPC: H01R4/36
Filed: 1989-12-22
Abstract: A metallic connection clamp (10) with opposing apertures for cables, leads etc. (11). The ends of the leads (11) passing into the aperture are fixed inside the clamp (10) by a holder (21), e.g. clamp screws. A lining (12) of highly conductive material, e.g. copper, is arranged inside the clamp (10), pref.  at the bottom, where the lead (11) ends are to be connected. The lining (12) is held in place in the clamp (10) by projections (16) along the sides (17) of the lining (12) which slot into slots (15) in the side walls (14) of the clamp (10). USE/ADVANTAGE - Inexpensive as only lining needs to be conductive, the rest may be made of inexpensive material, e.g. steel.
Patent DE-3990622-A1 (DE)
Title: Semiconductor thin film crystallisation with subcooled melt region
IPC: H01L21/223
Filed: 1989-05-30
Abstract: An Ar laser arrangement with a prism (1), laser tube (2), adjustable aperture iris (3) and exit mirror (4) irradiates the semiconductor wafer (9) via an ADP electrooptical crystal modulator (5), a dielectric polariser (6), a quarter-wave plate (7) and an objective lens (8). The surface is melted pref. with a TEM01 mode laser beam giving a  temp. profile in which the subcooled region is substantially symmetrical about its centre, with lateral dimensions of the same order as the thickness of the molten layer. An objective lens (8) with a focal length of 25 mm gives a laser spot having a dia. of 10 microns on the wafer surface.
Patent DE-4000057-A1 (DE)
Title: Screw clamp for installing door in building - has fixed arm with integral upstand forming back jaw against which movable jaw is screwed
Inventor: FISCHER VOLKER
IPC: B25B5/06
Filed: 1990-01-03
Abstract: The screw clamp may be used in building work. It consists of an arm (12) with a flat end (30) and an integral upstand (14) The upstand and arm end form the back of the clamp against which the movable jaw (24) can be screwed. The movable jaw (24) has a screw spindle (20) in line with it connected to a handle (22) which enables it to be turned. The movable jaw is mounted on a side arm (18) which may be moved along a profiled rail (16) when the movable jaw is released. USE/ADVANTAGE - The screw clamp can grip objects and simultaneously align them with fixed features such as a door lining with a wall.
Patent DE-4001432-A1 (DE)
Title: Moulded concrete tile - consists of two differently shaped individual tiles with arcuate engaging for faces
Inventor: HERRFURTH ROLF
IPC: E01C5/00
Filed: 1990-01-19
Abstract: The moulded tile slab has parallel-symmetrical upper and lower surfaces, and vertical side surfaces. This is laid or connected with other tiles, to form a flat pattern. The tile consists of a pair of two individual tiles. One tile (2) has the shape of a segment of a circle with the radius r with an angle alpha = 60 deg. the second tile (4) complements the first one geometrically, to form a rhombus with the side length r and two opposite interior angles of 60 deg. to 300 deg.
Patent DE-4002446-A1 (DE)
Title: Releasable fastening for guard plates - has stop bolt connected to secondary structure, and conical head with saw-tooth grips
Inventor: HARARAT-TEHRANI MOHAMAD
IPC: F16B21/07
Filed: 1990-01-27
Abstract: The assembly comprises an attachment element (I) encompassing a stop bolt (6) which is connected to the secondary structure (4). The bolt is positively retained in a socket (3) which is attached to the guard plate (4) and can be twisted to open or closed positions. The stop bolt (6) has a head (9) with saw-tooth grips (8) which mate with corresponding elements (22) formed in the socket (3). The head of the bolt is conical so that the grip elements lie in several relative planes.
Patent DE-4002774-A1 (DE)
Title: IC engine exhaust catalyst - has exhaust gases fed through catalyst in two directions
Inventor: DUEMMEL KARL-HEINZ
IPC: F01N3/28
Filed: 1990-01-31
Abstract: The exhaust for combustion engine has a catalyst in which the exhaust gases are made to flow twice through the catalyst (15). - Firstly the exhaust gases enter the catalyst at the inlet (E) and flow in one direction; secondary the gases flow in the opposite direction towards the outlet (A) in the catalyst housing (13), after circulating in a free volume in the end of the housing.
Patent DE-4005235-A1 (DE)
Title: Servo drive with variable torque limiter - has torque limited w.r.t. displacement via variable gearing and with friction flanges
Inventor: FISCHER MANFRED
IPC: F16D59/00
Filed: 1990-02-20
Abstract: The servo drive is fitted with special torque limiters in which the torque limit varies with displacement of the drive. The limiter has an interdigitated friction disc clutch and a variable gearing. The latter is operated by a variable clutch operated with displacement controlled by a displacement monitor (74). The output gearing from the torque limiter has two sets of bevel gears which mesh with a single output shaft (38). The torque limit can be set low at the start and finish of the servo drive and larger for the major part of the drive. USE/ADVANTAGE - Compact drive, protected drive linkage for aircraft control flaps.
Patent DE-4016448-A1 (DE)
Title: Mobile toy with inclined rotating discs - which are driven by endless chain with rods engaging holes in discs
Inventor: HOFMOCKEL JOHANN A
IPC: A63H31/00
Filed: 1990-05-22
Abstract: The invention concerns a toy which consists of two rotating discs (3) which rotate in planes inclined symmetrically to the horizontal. The discs are driven by means of an endless chain (13) mounted btween the two discs. This chain (13) is driven by a chain wheel (6) and guided by a sprocket. The chain has a number of equally spaced rods (12) attached to its links and projecting upwards and downwards from the chain. Each disc has a ring of holes fitted with ball bearings. The pitch of the holes in the disc is equal to the spacing of the rods (12). When the chain (13) is driven by the chain wheel (6) these rods engage the bearings in that part of the disc which is sufficiently close to the chain so that the discs are rotated.
Patent DE-4016464-A1 (DE)
Title: Vacuum cleaner with optional bush assistance - has intermediate plate holding peripheral brushes lowered by pedal with simultaneous sealing of pedal mechanism
Inventor: PETERSEN GEORG VILHELM
IPC: A47L9/06
Filed: 1990-05-22
Abstract: A vacuum cleaner intake housing (4) with central induction space (6) pipe coupling (8), support rollers (66) and suction base (10) has an intermediate brush carrying plate (16) with brushes (18) located around its periphery. A contra-motion of the suction base (10) and brush plate (16) is initiated by a foot pedal (26,28) and mechanism (30,32,34,38,40,50,58,62) working in conjunction with compression springs. Brush assisted sweeping occurs when section (28) of the pedal (26,28) is depressed since base (10) lifts and plate (16) falls, to bring brushes (18) into contact with floor whilst sealing gap between base (10) and plate (16). USE/ADVANTAGE - Provides increased cleaning efficiency due to brush assitance simultaneously preventing ingress of dust particles to pedal mechanism leading to jamming, experienced on earlier designs.
Patent DE-4017525-A1 (DE)
Title: Aq. polyurethane prepn(s)., esp. for low-gloss coatings - obtd. from di:isocyanate(s), long- and short-chain di:ol(s), cpds. with ionisable gps. and hydroxy or amino gps., and opt. other gps.
Inventor: RENZ HANS DR
IPC: C08G18/08
Filed: 1990-05-31
Abstract: Aq. PU prepns. contg. 10-60 wt.% polyurethane(s) (PU) are new. (A) are obtd. from (a) organic di-isocyanate(s) with no lateral alkyl gps. or a mixt. of isocyanates with mean NCO functionality 1.5-2.5 (Monomer I), (b) isocyanate (mixt.) with functionality 1.5-2.5 and contg. lateral alkyl gp(s). (Monomer II), (c) dihydric alcohol(s) with Mn 400-6000 or a mixt. of alcohols with similar Mn and mean OH functionality 1.5-2.5 (Monomer III), (d) dihydric alcohol(s) with Mn 62-399 or a mixt. of alcohols with similar Mn and mean OH functionality 1.5-2.5 (Monomer IV), (e) cpd(s). with ionisable gp(s). and at least one alcoholic OH or -NH- gp. (Monomer V), (f) 0, 1 or more polyamines with at least 2 -NH- gps. (Monomer VI), (g) 0, 1 or more cpd(s). with alcoholic OH gp(s). and -NH- gp(s). (Monomer VII) and (h) 0, 1 or more monohydric polyether-alcohols (Monomer VIII); the amts. of monomers are such that the equiv. ratio (OH + -NH-)/NCO is 0.1-0.4 for (III)/(I + II), 0.5-0.8 for (IV)/(I + II), 0.05-0.5 for (V)/(I + II), 0-0.4 for (VI)/(I + II), 0-0.4 for (VII)/(I + II), 0-0.2 for (VIII)/(I + II) and 0.80-1.25 for (total III-VIII)/(I + II); (I + II) contains 50-90 mol.% (I), and 0.05-2 mmols. of the ionisable gps. in monomer (V) are ionised per g PU in the prepn. Also claimed is a process for the prodn. of the above PU prepns. USE/ADVANTAGE - Prepns. are useful as binders for coating materials for various substrates, esp. leather (claimed). The prepns. give a final coating with a reduced level of gloss, combined with high abrasion resistance, high water resistance and elasticity. (7pp Dwg.No.0/0)
Patent DE-4019293-A1 (DE)
Title: Sheet feeding arrangement for printing machine with markings - performs machine speed-dependent phasing of clock pulses to flip=flops triggered by sheet sampling sensors
Inventor: BUSCHMANN FALK
IPC: B41F33/14
Filed: 1990-06-16
Abstract: The sheet release and locking mechanisms (3) are controlled by a processor (6) of signals from two sheet samplers (1,2) via D flip-flops (15,16).  These are  clocked (21) by a device (26) incorporating a pulse generator (9) which cooperates with a single-turn shaft (10). Pulses are delivered to a phase-shifter (7) directly (23) and via a rotational speed sensor (8).  The sampling time is variable in inverse proportion to the speed of the machine. ADVANTAGE - Precision of sheet positioning increased to improve quality of printing, with more time for settling sheets on markings.
Patent DE-4021357-A1 (DE)
Title: Bicycle pedal and shoe combination - has mating contours in shoe and pedal, engaging positively each other
Inventor: BAUME HUGUES
IPC: B62M3/08
Filed: 1990-07-05
Abstract: The bicycle pedal combination comprises a shoe (2) working against the pedal (1). The sole (20) of the shoe has a contour such as to engage positively a mating one on the pedal. - The contours are pref. formed by lugs (12) on both with those on the pedal at the rear end and of elastic material such as rubber. There can be a plate countersunk in the sole, engaging a safety mounting on the pedal.
Patent DE-4021515-A1 (DE)
Title: Tungsten interconnection pattern formation method for semiconductor - growing tungsten on exposed portions of poly:silicon film defined in pattern defining layer which is preferably highly doped oxide film
Inventor: KIM EUI-SONG
IPC: H01L21/3213
Filed: 1990-07-06
Abstract: The pattern formation method comprises the steps of forming a conductive layer, preferably a doped polysilicon film (18), over a first insulating film (12) on a semiconductor substrate (11). A pattern-defining layer is formed preferably a highly-doped oxide film (19), over the polysilicon film (18). Tungsten is grown selectively (15) on the exposed portions of the polysilicon film (18) defined in the pattern. The oxide film (19) is stripped e.g. by wet etching, and thereby removing any residue (20) of tungsten formed on the oxide film. The polysilicon film (18) is removed e.g. by dry etching using the tungsten as a mask leaving only that portion of the polysilicon which is underneath the tungsten.
Patent DE-4025622-A1 (DE)
Title: Terminal contact for integrated circuit semiconductor systems - comprises barrier-, undoped gold and gold rich eutectic gold-tin doped-layers on conducting path
Inventor: STECKHAN HANS-HINNERK DIPL PHY
IPC: H01L23/532
Filed: 1990-08-13
Abstract: Contact (I) with barrier layer (4) and contg. gold and tin, has an undoped gold layer (7-1) in the region neighbouring (4) and a gold-rich eutectic gold-tin-doped layer (7-3) contg. 80 wt. % gold and 20 wt. % tin in a region not adjacent to (4). Prepn.of (I) comprises applying gold layer to (4) and applying tin layer (7) and doping at 330-420 deg. C for up to 10 min. pref. in a non-oxidising atmos. Pref. intermediate layer (7-2) in the form of a gold-tin phase is between (7-1) and (7-3).
Patent DE-4027048-A1 (DE)
Title: Developer for negative photoresist - contains alkalinity carrier and solubiliser obtd. from sorbitan ester and polyethylene glycol
Inventor: GHICA GRIGORE ULAD DIPL ING
IPC: G03F7/32
Filed: 1990-08-27
Abstract: Developer comprises two water soluble components comprising a) a material which dissolves under alkaline reaction as a carrier of alkalinity, and b) a polycondensation prod. of sorbitan esters and polyethylene glycol as a solubiliser. The alkalinity carrier is pref. sodium sulphite, and the solubilizer is pref. polyoxyethylene e-sorbitan-monolaurate. The compsn. comprises, per litre of developing soln., 950-990 ml. of an aq. soln. of 10-15g sodium sulphite and 10-50 nl polyoxyethylene me-sorbitan-monolaurate. USE/ADVANTAGE - Useful in development of photoresists, esp. for prodn. of jet plates (claimed). A residue-free soln. is obtd. for the unexposed photoresist for the base surface of the substrate. -(3pp Dwg.No.0/0)
Patent DE-4029122-A1 (DE)
Title: Stethoscope with breast piece - has at least one chamber limited on one external side by membrane, and two auscultatory tubes
Inventor: POLLINGER GEORG
IPC: A61B7/02
Filed: 1990-09-13
Abstract: The two auscultatory tubes have ear olives at their ends remote from the membrane chamber, and inside the membrane (22), and at a distance from it is a second membrane (28) which divides the membrane chamber (26) into a first (30) and second (32) chambers, the auscultatory tubes evolving from the innermost chamber (32). It is also possible to have third and fourth membranes, spaced apart, which in turn form further membrane chambers. The spacing between all the membranes is unalterable, fixed, rigid distance pieces being used to ensure this. The first membrane (22) is pot-shaped and is held on the breast piece (12) by a radially extending ring flange (22c) on the free edge of its ring wall (22b). USE - In medical practice, in conjunction with investigation of pulmonary and cardiac conditions, including hyper- and hypotensive states.
Patent DE-4029761-A1 (DE)
Title: Stackable hand trolley with platform - has stops in front of and behind rear castors on same level
Inventor: SCHMID JOHANN
IPC: B62B5/00
Filed: 1990-09-20
Abstract: The trolley has a frame (2) with a plan trapezoidal form, with the longer parallel side removed so that the frame is open at the rear end. The frame has a load platform (8) and vertical pillars (6) at its rear end, to which handle (7) is attached, and an optional basket. The trolley is mounted on castors (9, 10). Several trolleys can be stacked in line one behind the other, with the frame of the rear trolley fitting inside the frame of the trolley in front. The rear castors (10) of each trolley are provided with stop (13, 14) in front of and behind the castors for adjacent trolleys. ADVANTAGE - Improved design and handling.
Patent DE-4030272-A1 (DE)
Title: Treating metallic sludge contaminated with oil and other impurities - by superheating in shaft furnace and passing iron ore, carbon, scrap etc. into superheated melt to give steel or cast iron melt
Inventor: KLIMANEK ERICH DIPL ING
IPC: C21C5/00
Filed: 1990-09-25
Abstract: Method of producing reusable products from metallic sludge which has oil contamination and other impurities consist of feeding the liquid sludge onto the hearth of a furnace and heating to 1800 deg C and above. The superheated liquid can then be subjected to various reduction processes by feeding material or gas into the melt.
Patent DE-4032868-A1 (DE)
Title: Stacking trolley for large items - with flat load surface and with vertical support for long items
Inventor: EBERLEIN HERBERT
IPC: B62B3/18
Filed: 1990-10-17
Abstract: The trolley has a low mounted load surface (10) sloping rearwards to a wall (5). The top of the wall has a handgrip (6) spaced behind it, and from which a long tray is slung (8) for small items. The space between the tray and the rear wall provides a slot through which long items can be stacked vertically, with the bottom ends resting in a lower tray. The lower tray is behind the rear wall, in the otherwise dead space in the rear of the trolley. The sloping load surface holds large items against the rear wall for a stable support. USE/ADVANTAGE - Trolley gives secure hold for most types of items, compact storage for long items.
Patent DE-4033822-A1 (DE)
Title: Direct injection diesel combustion chamber - has concave inner wall section piston recess, forming fuel rebound surface
Inventor: ISHISAKA KAZUYOSHI
IPC: F02B23/06
Filed: 1990-10-24
Abstract: The direct injection diesel engine combustion chamber (4) is formed by a recess (6) in the piston crown (2a), into which fuel (F) is injected. In the longitudinal sectional view of the piston (2), part of the inner peripheral wall (6a) of the recess is concave, forming a fuel rebound surface (7b) w.r.t. to the injector (5). The path followed by the rebounding fuel is shifted towards the centre during the piston stroke. A recess in the rebound surface increases in depth towards the piston crown surface. ADVANTAGE - No fuel adhesion to peripheral wall, and improved combustion and cleaner exhaust.
Patent DE-4036090-A1 (DE)
Title: Printer with air cooling - has flap elements on head to form flow path for air
Inventor: DUBOIS ERNST
IPC: B41J29/377
Filed: 1990-11-13
Abstract: The printer has a housing in which is located the print roller (12) and the print head (14) that moves on a carriage in a direction parallel to the roller axis. The rear panel has an inlet (16) or cool air and an exit for heated air (18). A wall (22) is positioned between the two ports. Air is forced across the head as it moves along a line and passes over a vent (30) formed by laminated elements. On the return stroke the elements closed to force air out of the housing. ADVANTAGE - Ventilator on print head provides efficient cooling.
Patent DE-4038418-A1 (DE)
Title: Lower cleaning box for sanitary mixt. fitting - is watertight in area of underside and contains diversion component
Inventor: SCHOENWEGER ALOIS
IPC: E03C1/042
Filed: 1990-12-01
Abstract: The diversion component comprises a sealing element (17), which is fitted in the area of the under side of the box. It is bath-shaped, and has an aperture through which a pipe or connecting part of the fitting passes. Around its aperture is a collar (18). It is pushed into the box from the front, and is made of a rubber-type material. It has a groove-type tongue (22) which extends over the front side of the box, and when the box cap is fitted the tongue is located inside it. The cap in the area of its underside has a nose-formation locating in the outer contour of the box, and which encompasses the groove-type tongue (22) of the sealing element (17). USE - As a lower cleaning box for a sanitary mixt. fitting.