baber/WOPTO huggingface dataset:
Patent DE-3936602-A1 (DE)
Title: Tripod-type universal joint - has balls working in grooves holding pivoting heads on arms at correct angle
Inventor: WELSCHOF HANS-HEINRICH DIPL IN
IPC: F16D3/205
Filed: 1989-11-03
Abstract: The tripod-type universal joint has components sliding axially in relation to each other, the sleeve-type outer one (1) having three axial recesses (2) with races (3, 4) in opposite pairs in the peripheral direction. The inner one (5) is a three-armed spider whose arms (6) engage in the recesses and have pivoting heads (8) with bearing balls (11, 12) working in the races. The balls work in grooves (13, 14) in the races, these grooves holding the heads at the correct angle and so that they cannot move in the radial direction in the outer component. Each head can slide in the radial direction on its respective arm. USE/ADVANTAGE - Tripod-type universal joint is cheap and gives less vibration when working at an angle.
Patent DE-3937699-A1 (DE)
Title: Producing epsilon carbonitride coatings on ferrous components - by controlling gas mixt. compsn. with respect to nitriding and carburising indices required to produce predetermined coating compsn.
Inventor: KUNZE JOACHIM DR RER NAT
IPC: C23C8/32
Filed: 1989-11-13
Abstract: Method of producing epsilon carbontride layers of definite compsn. using a gas mixt. of NH3, N2, H2, CO,CO2, and H20 consists of establishing the nitriding (r) and carburising (s) indices which result in a predetermined coating compsn. and using known thermodynamic data of NH3 equilbrium, water vapour formation and water gas equilbrium together with usual stoichiometric constants, the compsn. of the gas mixt. needed to gve the required indices (r and s) is ascertained. The minimal amts. of these gases together with a higher proportion of undissociated NH3 are fed into the reaction chamber and the resultant gas mixt. compared with the optimal value and regulated until the optimal value is obtd. The values of the nitriding and carburising indices for a given coating compsn. are taken from a diagram. The compsn. of the gas mixt. corresponds to the required values of r and s indices is achieved by adding the required amts. of NH3 N2 and C-carrying gases and adjusting the amts. of 02-carrying gases and the extent of NH2 dissociation in the reaction vessel. The compsn. of the gas mixt. and/or the off-gas is measured by gas sensors and the nominal values of indices (r and s) compared with their optimal values. The regulation of the gas mixt. is carried out by raising the gas through-put or the extent of NH3 dissociation using a catalyst. ADVANTAGE - By recognising the relationship between the nitriding and carburising potential of the gas mixt. an exact control of the gas mixt. is possible resulting in the prodn. of definite coating compsn.
Patent DE-3938530-A1 (DE)
Title: Separator for stacked textile patterns - has stack stretched over curved support, with layers loosened and separated for subsequent processing
Inventor: LESSMEISTER HARDY
IPC: B65H3/60
Filed: 1989-11-21
Abstract: The stack of cut textile shapes (1) is dropped over a curved surface (7) and clamped at near end by one clamp (15). A second clamp moves around the stack and pulls it flat over the surface, leaving the other end of the stack with staggered edges. The stack is then located to enable each layer to be removed by remote handling. The staggered edge is similarly treated by clamping and pulling device driven by an electromotor (33). The final separation of the layers is under airblast. The handling of the stack loosens the textile grip betwen the layers. The machine operation is controlled electronically (44). USE/ADVANTAGE - For clothing mfr. enables automatic handling, relieve manual separation of otherwise stuck layers.
Patent DE-4001250-A1 (DE)
Title: Reel for winding of e.g. yarn - is constructed from frustra of cones, which can be separated then stacked one upon another
Inventor: EISELE WILFRIED
IPC: B65H75/14
Filed: 1990-01-18
Abstract: A reel, on which yarn or similar material is wound, is constructed from two hollow frusta of cones (1,2).  Each frusta has a flange (5,6) formed at its larger diameter end whilst the smaller diameter ends are so formed  that the two frusta can be clipped together to form the reel.  The joint between the two smaller diameter ends is such that the two frusta can be easily separated. This design of reel enables the individual frusta to be compactly stacked one upon another, for convenient storage and transport of empty reels. USE/ADVANTAGE - Reels which can be conveniently transported.
Patent DE-4002586-A1 (DE)
Title: Microwave cooker with simplified controls - including two switches allowing cooking to proceed with or without actuation of drive for rotating plate
Inventor: ZINKANN PETER DR
IPC: H05B6/80
Filed: 1990-01-30
Abstract: The microwave cooker has a device to couple microwaves into the cooking space. A control panel (1) has a start button block (6) that consists of two separately switched switches. The first switch (3) is used to start the overall cooking program where the drive for the cooking space's rotating plate is switched on. The second switch (4) starts the overall program without the rotary plate's drive. Whilst the cooker is in one state i.e. plate drive on or of the other state can be selected by operating the appropriate switch. If a temp. sensing probe is used the plate's drive is disabled either mechanically or electrically. ADVANTAGE - Easier viewing of operation.
Patent DE-4007738-A1 (DE)
Title: Keyboard musical instrument string actuator - has pins forming additional connection from keys to strings
Inventor: CLAAS BENEDIKT
IPC: G10C3/16
Filed: 1990-03-08
Abstract: The keyboard musical instrument mechanism acts on the strings via the keys. In addition to the sound generating hammer (a) etc., a pin (d) forms a connection between the key (c) and the string (b). It allows note generation as with a clavichord. The depth for which the key is depressed is thus transmitted by the connection. ADVANTAGE - Generating vibrato effect.
Patent DE-4013712-A1 (DE)
Title: Environmentally-friendly mfr. of foam-backed plastics parts - using polyurethane lacquer to protect plastic from partly-halogenated blowing agent used in polyurethane foam backing mixt.
Inventor: EISEN NORBERT DR
IPC: B29K105/04
Filed: 1990-04-28
Abstract: The novel features in the prodn. of deep-drawn foam-backed plastics internal parts for cooling equipment where the foam backing is obtd. from a reaction mixt. yielding a rigid polyurethane foam are that: (i) a partly halogenated hydrocarbon (I) with at least one C-H bond and a boiling range of -50 to +50 deg.C is used as at least part of the org. blowing agent in the foam-forming reaction mixt.; and (ii) prior to formation of the foam the parts are coated on the foam side with a solvent-contg., chemically crosslinkable one- or two-component lacquer based on an aq. polyurethane dispersion.
Patent DE-4015052-A1 (DE)
Title: Machine for grinding edges of blanks of pieces of cutlery - has turntable to bring blanks to grinding belts
Inventor: HAUSCHILD WILHELM GEORG
IPC: B24B19/00
Filed: 1990-05-10
Abstract: A machine for grinding the edges of long thin workpieces such as the blanks for pieces of cutlery has a turntable (2) to which the blanks (44) are fastened by a device (42). As the turntables rotates each blank passes a device (66) which brings the blank to the grinding position. The blank then passes through grinding stations (4). Each grinding station (4) consists of an endless belt (14) which passes around guide pulleys so that a vertical part of the belt is pressed against the workpiece. The belt has an abrasive surface which smoothes the edges of the workpieces. USE - Cutlery manufacture.
Patent DE-4015066-A1 (DE)
Title: Automatically controlling dental treatment and surgery - using simultaneous spectrometer and computer to measure spectral reflectivity of tooth surface subjected to pulsed laser via optical frame
Inventor: BERGMANN HANS WILHELM
IPC: A61B18/20
Filed: 1990-05-10
Abstract: Laser light is transmitted to the location to be treated by an optical fibre. Via the same or another one in parallel, the location is analysed by differential reflectometry. The laser is only removed when the reflection curve lies within a therapeutically sound band. The duration of the laser pulses and/or energy per pulse can be varied according to the measured reflection spectrum. The laser can be excimer type. The reduction of intensity and/or pulse length can be used for coagulation of blood vessles. Laser triggering can follow from evaluation of the differential reflection  measurement through exchange of laser capacitor charges. USE/ADVANTAGE - Treating locations difficult to access e.g. in body cavities, without damaging sound tissue while treating pathological tissue, e.g. cancerous, dental caries.
Patent DE-4016142-A1 (DE)
Title: Vehicle antitheft device - activates optical or acoustic warning or disables engine after defined delay from starting engine
Inventor: WEISHAUPT WALTER
IPC: B60R25/00
Filed: 1990-05-18
Abstract: The anti-theft device prevents the vehicle being driven by an unauthorised driver, by disabling the engine and/or by providing an acoustic or optical warning signal, the device brought into operation after starting the vehicle engine under control of the vehicle owner, e.g. via a remote control, or in response to defined interia. Pref. the anti-theft device is controlled by an onboard computer. ADVANTAGE - Delayed response allows thief to be apprehended.
Patent DE-4016872-A1 (DE)
Title: Durable, stable gauge for testing IC engine pressures - uses strain gauge linked to metal diaphragm which is subjected to pressure being measured
Inventor: NEUBECK KURT DR
IPC: G01L23/18
Filed: 1990-05-25
Abstract: A pressure gauge measures the pressure by a flat metal membrane and an annular thicker mounting which is integral with it and holds it round the rim. The front of the membrane is exposed to the pressure to be tested of a fluid. The back of the membrane has a strain gauge with at least one metallic strain strip and its appropriate contacts. The deformation of the membrane caused by the pressure of the fluid is applied to the (at least one) strip, and the change produced in its electrical resistance is measured. The system has a cup-shaped housing with a chamber between its base and surrounding wall. The gauge is located in this chamber and the annular membrane mounting is bonded airtight to the edge of the chamber wall. The back of the membrane faces the interior of the chamber. A cable with metal outer sleeve has wire leads going through its sleeve and has an insulating guide to hold the wires in position. The cable passes through a hole in the base of the housing to which its sheath is bonded. The wire leads have their ends projecting freely into the chamber, their tips being in electrical contact with the relevant contacts on the strain gauge. Each such projecting end is bent across the axis of the cable and reacts as an elastic leaf spring; as a result the tip of each end is held elastically and only this maintains it in touch with its respective contact. The design preferably includes and adhesive based on polyimide or silicone rubber. The gauge is suitable for use over prolonged periods. It is therefore not only mechanically stable but also it provides stable signals. It is simple and cheap to produce. It is suitable for testing pressures inside I.C. engines. @(7pp Dwg.No.1/9)@
Patent DE-4025325-A1 (DE)
Title: Measuring HV using two resistance chains - in which one resistor is of different value so that chains are unbalanced
Inventor: BISTERFELD MANFRED PROF DIPL I
IPC: G01R15/04
Filed: 1990-08-10
Abstract: The voltages across the chains forming voltage dividers are measured within a short period. The voltage across the resistor of known value is switched in and the others shunted. A first voltage measurement occurs during or over a first period. In a further period the voltage is measured at a charged resistance. A switch-over can follow at the end of the first period for a definite charge. A further measuring occurs during or over another period following the next one. A phase shift of the voltages by switching in or out the resistor of known value can be taken into account in ascertaining the voltage. The resistance values of the two chains between the h.v. (1) and earth (2) differ by the resistor (RD) of known value. The latter can be bridged by a switch. ADVANTAGE - Impedance of measuring resistors is small compared with total impedance of chain.
Patent DE-4027259-A1 (DE)
Inventor: BEDERKE KLAUS DIPL CHEM DR
IPC: B05D7/24
Filed: 1990-08-29
Abstract: 2.1. A binder composition is described for solvent-containing or aqueous coatings, which binder composition cures at low temperature to give non-yellowing and solvent-resistant coatings. 2.2. The binder composition contains binder components based on polyethers, polyesters, polyether/polyesters and/or (meth)acrylic copolymers having at least one acryloyl group and at least one epoxide group in the molecule, the acryloyl groups and epoxide groups being present in the number ratio 20:80 to 80:20, and also one or more polyamines as curing agent in the ratio of equivalent weights of 2:0.5 to 1:1.5. 2.3. Binders for pigmented and unpigmented surface coatings (paints).
Patent DE-4029805-A1 (DE)
Title: Bleach bath contg. nitrilo di:acetic mono:propionic acid as chelant
Inventor: TAPPE GUSTAV
IPC: G03C5/44
Filed: 1990-09-20
Abstract: Bleach bath contains a Fe-III complex, in which at least 20 mole-% chelating agent (I) is nitrilodiacetic-monopropionic acid of formula (HOOC-CH2)2-N-CH2-CH2-COOH and is adjusted to a pH between 6.0 and 4.5.   At least 80 mol. % of (I) is pref. (IA). The bath pref. contains 1-120 mol. % excess (I). It may contain thiosulphate in an amt. insufficient to fix the undeveloped Ag halide or be free from thiosulphate.
Patent DE-4032331-A1 (DE)
Inventor: BOERNER STEPHAN
IPC: G01N29/26
Filed: 1990-10-09
Abstract: The aim of the invention is to provide an easy-to-set-up drive unit (1) for an inspection head (3), the drive unit being mountable in the shortest possible time, without the need for any other equipment, on the pipe (9) to be inspected. Fitted to the carriage (1a) of the drive unit (1) is an outrigger arm (2) which carries the inspection head (3) at an adjustable distance from the carriage. The carriage (1a) is driven by a chain drive (8), the chain having a releasable closure (8a) and being acted on by a tensioning spring (20). The chain tensioner (17), which is located between the axles (6, 6a) of the carriage (1a), presses on the chain (8). The invention is designed for use in the inspection of circular welds (4) in welded piping (9) intended to convey hazardous materials, such as explosive or radioactive substances.
Patent DE-4032582-A1 (DE)
Inventor: WAGNER MANFRED
IPC: B01F23/10
Filed: 1990-10-13
Abstract: The invention relates to a gas burner, especially for glass melting furnaces, with a mixing pipe with a perforated mixing member for mixing burnable gas with air drawn in by the gas flow. 
<??>The new gas burner is characterised in that the perforated mixing member (2) is arranged on the end of an air suction pipe (5), which is movable in the direction of its longitudinal axis, and there is between the perforated mixing member (2) and the inner surface (11) of the mixing pipe (3) a sealing sleeve (10) which allows a movement of the perforated mixing member (2) in the direction of the longitudinal axis. 
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Patent DE-4036393-A1 (DE)
Title: Camera tripod pivoting head - has slits in head element and horizontal shaft, which on compression, lock pivoting about first horizontal then vertical axes
Inventor: FUJIMOTO KAZUO
IPC: F16M11/02
Filed: 1990-11-15
Abstract: The pivoting head fixture for a camera tripod has a head (1), rotatable about both horizontal and vertical axes on corresponding shafts (11,18). The head has a slit (4) extending to the bore (3) for the horizontal shaft (11); the latter also has a slit (13) extending to a central vertical shaft bore (12). The slit gaps are formed so that on screwing in an actuating rod (8), the slits compress to first lock pivoting about the horizontal axis and then about the vertical axis. ADVANTAGE - Pivoting is locked about either the horizontal or both axes.
Patent DE-4038157-A1 (DE)
Title: Device for loosening motor vehicle wheel nuts - consists of T-shaped tube which connects spanner to vertical lifting car jack
Inventor: EBERT DIETER DR MED
IPC: B66F3/08
Filed: 1990-11-30
Abstract: The device consists of a T-shaped piece of steel tubing (15) whose long leg (15a) slides over the lever end (8a) of the spanner (8) while its short T-leg (15b) fits on the projecting lug (13) of the lifting arm (12) of a car jack (9). The car must be of the vertical type where the adjusting arm maintains a constant angle with the supporting member (10). USE/ADVANTAGE - For loosening the wheel nuts of a motor vehicle. When the jack is wound up the spanner lever must move with its lifting arm.
Patent DE-4041055-A1 (DE)
Title: Prefab. chimney top for building -  has cover supported by projections on chimney wall and upwardly extending connecting piece in flue gas outlet area
Inventor: MEISSNER PETER
IPC: F23L17/02
Filed: 1990-12-20
Abstract: The cover (14) extends over the cross-section of the chimney, and has an aperture (28) for flue gas discharge which is connecfted to the flue gas pipe (4) in the chimney via a compensation connection (30). The cover comprises a part (16) which is set on the chimney wall via projections (18). In the region of the flue gas outlet, the part has an upwardly extending connecting piece (24) over which engages a loosely fitted mouth border (26) which contains the flue gas aperture (28). The connecting piece (24) and the mouth border (26) have a larger cross-section than the largest flue gas pipe (4) to be encountered, and the mouth border can be exchanged for one with a connection (30) of another cross-section. USE - As a prefab chimney top on a building.
Patent DE-4100724-A1 (DE)
Inventor: MEUER JOHANNES DIPL ING
IPC: F16N7/38
Filed: 1991-01-10
Abstract: In a central-lubrication assembly with a gear pump (3) and with an electric motor (6) connected to the latter via a connecting piece (4), the connecting piece (4) is not only designed as a valve block for a combined pressure-relief and pressure-limiting valve, but also serves as bearings for shaft butts (17, 18) of the gearwheels (19, 20) of the gear pump (3) and furthermore performs the function of a coverplate for the gear pump.
Patent DE-4101354-A1 (DE)
Title: Inductive heated roller - has monitors and controls for each embedded heater to give the required temp. profile
IPC: D21G1/02
Filed: 1991-01-18
Abstract: The system to heat a roller by induction such as in papermaking, where a rotating metal roller body (1) is fitted with inductive heaters (5,6,7,8,9) close to its outer surface (4), has a monitor (27,28,29,30,31) and a control (17,18,19,20,21) for the electric power fed to each heater (5,6,7,8,9). The monitors and controls maintain the operation of each heater to a preset nominal value. The unit to generate the nominal power value (44) sets a common nominal power value for all the heaters (5,6,7,8,9). Power is supplied to each heater (5,6,7,8,9) until it achieves the nominal value set centrally (44), and a further correction unit (42,43,45,46) modifies the nominal value for a given heater (5,6,7,8,9). The signals from the monitors (27,28,29,30,31) and from the nominal power value correction units (42,43,45,46) for the heaters (5,6,7,8,9) are passed to a controlled regulating amplifier (17,18,19,20,21). ADVANTAGE - The assembly improves the temp. profile of the roller.
Patent DE-4103162-A1 (DE)
Title: Sepg. small concns. of light liquids from effluent water - by extn. with heavy water immiscible  solvent and removal of solvent residues by sorption
IPC: B01D17/02
Filed: 1991-02-02
Abstract: Process for sepg. light liqs. such as fats, oils, mineral oils, resins, surfactants, etc., present in effluent water in very small concns., esp. for post-purificn. of waste waters which have been pretreated in gravity separators, comprises (1) bringing the waste water into intimate contact with solvents which are difficultly soluble in the waste water and which have a density which is distinctly greater than that of water, so that the light liqs. are extracted into the solvent and (2) subjecting the waste water to a subsequent post-purificn. stage in which it is freed from the small amt. of solvent still present due to its slight solubility in the water, and which may still contain some of the extracted light liqs., by sorption. USE/ADVANTAGE - The use of a sorption method for removing the small amt. of residual solvent from the first extn. stage avoids the necessity for applying a second solvent extn. to remove residues of the first extn. solvent. The sorption agent can be regenerated by a distn. stage or by exchange distn. and the recovered solvent recycled to the first distn.
Patent DE-4106781-A1 (DE)
Title: Reducing acid and sulphate content of water in overburden deposits - by introducing nutrients into overburden from lignite mines to promote growth of bacteria which reduce sulphate(s) to hydrogen sulphide and insoluble sulphide(s)
IPC: E21C41/32
Filed: 1991-03-04
Abstract: Nutrients are introduced into the dumped material for the growth of bacteria which reduce sulphates to hydrogen sulphide and insoluble sulphides. These nutrients are in the form of sewage sludge or sludge from the processing of sugar beet and/or lignite. The free oxygen content of the dumped material is reduced by covering the deposit with an impermeable layer. Waste material containing iron sulphide may be built into the lower layers of the deposited material, and on it organic substances are spread in a layer of a suitable thickness and/or in an irregular distribution. Organic substances are in particular introduced into the boundary regions of the flow of the ground water in the deposited material. USE/ADVANTAGE - Used in reducing the contaminaton of ground water in deposits of overburden material, esp. overburden from lignite mining operations.
Patent DE-4107191-A1 (DE)
Title: Iridium catalyst for hydrazinolysis - prepd. on aluminium oxide carrier of large surface area
Inventor: MIZUKAMI FUJIO
IPC: C01B3/04
Filed: 1991-03-06
Abstract: A catalyst for hydrazinolysis with a high catalytic activity and a long life-time, together with a high heat resistance has been prepared. The catalyst consists of iridium supported on an aluminium oxide carrier with an extensive surface area. It is used during the hydrazinolysis reaction: The carrier is made by adding aluminium oxide to hexylene glycol (2-methyl-2,4-pentandiol), warming to 100-200 deg. C to form a sol, followed by the hydrolysis of the sol. to a gel which is then dried and roasted. The quantity of iridium used is 5-30 wt.%, spread on to the carrier. ADVANTAGE - If large quantities of iridium are carried on the aluminium oxide surface, a regular distribution of iridium cannot be guaranteed, and hence its catalytic activity is deminished. The aluminium oxide is not very heat resistant, which decreases the life-time of the catalyst. In this catalyst, the activity is high with a long life-time and high heat resistance, and the iridium is more regularly distributed on the surface of the carrier.