baber/WOPTO huggingface dataset:
Patent DE-3943349-A1 (DE)
Title: Sheet metal workpiece bending press - achieves high accuracy workpieces with high bending forces and low beam deflections
Inventor: CATTI ALBERTO AIMONE
IPC: B21D5/02
Filed: 1989-12-29
Abstract: A sheet metal workpiece bending machine comprising: -upper and lower elongated bending tools which can be moved towards and away from each other; - at least three supporting frames and apron members to support the upper and lower bending tools; - an electric servomotor and a ballscrew for exerting a driving force on at least three sections in the longitudinal direction of the upper and lower bending tools; - means for controlling the application of the driving force so that different sections of the bending tools are maintained to be the same during the bending operations.
Patent DE-4000811-A1 (DE)
Inventor: SCHREIBER HANS DIPL CHEM
IPC: C25B1/04
Filed: 1990-01-13
Abstract: An electrolyte which is physiologically acceptable and non-hazardous, which has a pH value close to the neutral point and in which the evolution of gas can be reproduced and controlled within adequate limits consists of a mixture of preferably multibasic acids, their salts and complexing agents.
Patent DE-4001162-A1 (DE)
Title: Inductive contactless identification system - generates pulses of opposite polarity enabling greater separation of code carrier and read-write head
Inventor: KESSLER MICHAEL
IPC: G06K7/08
Filed: 1990-01-17
Abstract: An inductive identification system for contactless identification and/or marking of objects contains a read or read/write head, a code carrier, a transmission and reception coil system (1) and an evaluation unit. The head is activated by pulses from the transmission system passing via the code carrier on an object. The transmission coil (2,3) is controlled by electronic switches (6,7) for successive short but equal time intervals and the current direction in the transmission coil is alternately reversed to generate equal but opposite polarity pulses. ADVANTAGE - Allows greater separation between read/write head and code carrier.
Patent DE-4001518-A1 (DE)
Inventor: DECKWER WOLF-DIETER PROF DR RE
IPC: C12M1/36
Filed: 1990-01-19
Abstract: The invention relates to a process for high cell density fermentation of Escherichia coli in an agitated boiler fermenter.
Patent DE-4002012-A1 (DE)
Inventor: LAUFENBERG ALFRED
IPC: C07C67/347
Filed: 1990-01-24
Abstract: Olefinically unsaturated adducts of ethylene on polyunsaturated fatty acids with 18 to 22 carbon atoms or on esters of these fatty acids with C1-C36 alkanols in molar ratios of ethylene to fatty acids or fatty acid esters in the range from 1:1 to 3:1, obtainable by reacting the fatty acids or fatty acid esters with ethylene at elevated temperature and pressure in the presence of compounds of the transition metals Ru, Rh, Pd, Ir and Pt as catalysts, are useful intermediate products, which on hydrogenation yield saturated derivatives with low solidification points.
Patent DE-4003767-A1 (DE)
Title: Fold-away cupboard bed with easy swivel movement - has tension springs as well as compression springs
Inventor: PREMER HEINZ ING
IPC: A47C17/40
Filed: 1990-02-08
Abstract: The cupboard bed has a bed frame which can swivel about a horizontal axis through compression springs which support the main weight of the bed.  Extra tension springs (14) are also provided which can be easily installed and removed. A ram (12) installed inside the compression spring (10) can have at the end extended in the bed position tension springs which hange in openings (13) of a cross support (17).  The other end of the tension springs can hange in openings formed as recesses on a part (16) connected to the abutment (9) which is fixed on the frame. ADVANTAGE - The bed is easier to move in and out of the cupboard without danger of injury to the user.
Patent DE-4004056-A1 (DE)
Title: Inking control esp. for offset rotary printing machine - applies colour pattern corrections before addn. of values extracted by scanning system from original colour documents
Inventor: MAIER WERNER DIPL ING
IPC: B41F33/00
Filed: 1990-02-10
Abstract: Colour zones (10, 11) on two original plates or films (8, 9) are scanned in two directions by small probes (5, 6) linked to a scanner (4) with co-ordinate acquisition (12), surface coverage (13) and colour overlay (14) logic. A weighting calculator (16) feeds an ink requirement computer (3) associated with a subject calculator (20) and template corrector (17). A colour zone prescription device (2) issues commands to the printer (1) with its ink distributor (21) and lifter (22). Feedback to the computer (3) may be provided by an expert system (18).
Patent DE-4004378-A1 (DE)
Title: Tool wear determn. from friction with dressing tool - is measured by one or more vibration parameters
Inventor: NAHR HORST DR
IPC: B24B53/00
Filed: 1990-02-13
Abstract: To determine wear caused on a rotating grinder tool (4), the worn tool is brought into contact with a dressing tool (8), and the extent and/or nature of the wear are expressed by one physical parameter related to the friction between the two tools. Possible parameters include the amplitude/frequency/intensity/speed/pressure amplitude of the resilient vibrations produced by the contact, the temp. produced in at least one tool by frictional heat, or the torque increase in at least one tool needed to maintain constant rotation speed. A wear profile is produced which relates to data measured over the axial width and/or profile of the grinder tool, based on sensed vibrations. The comparison unit employed incorporates data related to the value of a work-piece being ground. ADVANTAGE - Wear is simply and quickly measured.
Patent DE-4006047-A1 (DE)
Title: Throughflow HF treatment oven - has auxiliary electrode on one or both sides of main HF electrode
Inventor: GRASSMANN HANS CHRISTIAN DIPL
IPC: H05B6/54
Filed: 1990-02-26
Abstract: The oven has a main electrode (1) coupled to a HF source (10) at a given distance above the transported goods (3) and an auxiliary electrode (2) on one or both sides of it for altering the edge field. The distance of the auxiliary electrode (2) from the goods (3) may be dependent on that of the main electrode (1).  The distance adjustment is effected via a mechanical setting drive, with an inductive or capacitive xoupling between the main and auxiliary electrodes (1, 2). The auxiliary electrode may be heated. USE - For uniform heat distribution for treatment of textile reels.
Patent DE-4009116-A1 (DE)
Title: Polarised solid-state laser - has phase-conjugate SBS mirrors with use of differential thresholds to sustain stable emission
Inventor: PHILLIPPS GERD DIPL PHYS
IPC: H01S3/10
Filed: 1990-03-19
Abstract: In a solid-state laser element, e.g. Nd:YAG, (1), low level excitation is maintained by conventional mirrors (2,3) the beam passing through a polariser (5), two quarter-wave plates (6,8) and two SBS phase-conjugate mirrors (4,7). - When the laser energy reaches their thresholds the SBS mirrors sustain the lasing action with much greater efficiency and, due to their different threshold energies, hold it ti a nearly constant level. The SBS mirrors also compensate for adverse thermal lens effects in the lasing medium.
Patent DE-4009668-A1 (DE)
Title: Location of taxiing aircraft in accurate positions - using comparison of signal field, e.g. optical image with reference image to determine actual position
Inventor: FRIESLEBEN KLAUS
IPC: B64F1/00
Filed: 1990-03-26
Abstract: The method for stopping aircraft in accurate positions involves automatically transmitting position correction commands to the aircraft. The true position of the aircraft is continuously determined by evaluating at least one one- or two-dimensional signal field generated by the aircraft and measured by a detector via the air. The signal field can be an optical signal field, i.e. an image. The vehicle type can be determined by comparing the signal field with stored reference fields and is used to influence the position correction commands, esp. the stop command. USE/ADVANTAGE - The method eliminates the need for a costly system of fixed sensors in the taxi path and the inherent errors of detection of such an approach.
Patent DE-4010202-A1 (DE)
Title: Fluid extractor instrument with filtered venting - has filter secured to plate integral with needle and union
Inventor: WEX ROLAND
IPC: B65D25/48
Filed: 1990-03-30
Abstract: The instrument extracts fluid from a bottle while simultaneously providing filtered venting for the latter. It has a needle puncturing the bottle seal and with separate passages for air and fluid passing through a support plate, also a union for a syringe. - The plate (2), needle (3) and union (4) are in one piece. A filter is secured to the plate at the air inlet (16), typically by welding. There can be a counterbore in the plate, accommodating a circular membrane.
Patent DE-4010822-A1 (DE)
Title: Bag or sack made of paper - has tear=off strip in floor for easy opening
Inventor: SANDER ROLF
IPC: B65D77/32
Filed: 1990-04-04
Abstract: The bag or sack is made from a material such as paper, which is capable of being torn. The floor of the bag has ends of triangular form and flaps (15) extending inwards from each side. The main part of the floor of the bag consists of a rectangul-ar sheet which has its ends placed over the triangular end pieces whilst its side areas are covered by the folded over flaps (15) of the bag side walls. These flaps (15) leave the central strip of the rectangular sheet uncovered and a tear-off strip (36) is attached to this central part of the rectangular sheet. The bag is opened by tearing off this strip (36). USE - Tear-off strips for bags or sacks.
Patent DE-4016754-A1 (DE)
Title: Vehicle antilock brake control valve - has brake inlet valve held closed by servo pressure and in-line with flow restriction
Inventor: VOLZ PETER DR
IPC: B60T8/48
Filed: 1990-05-25
Abstract: Each wheelbrake cylinder is connected to the brake circuit by a pair of valves operated from the same supply. The inlet valve (5) is normally open and is closed by the signal current. It is held in the closed position by a servo pressure and operates as a non return valve. the in-line flow restriction (25) provides the fluid flow to the brakes, for brake modulation. The venting valve (6) is applied every time the signal current operates. The two valves require no complex control circuits and operate together. The inlet valve is reset when the servo pressure is removed i.e. at the end of the brake modulation cycles. ADVANTAGE - Simple control system, no separate drive circuits required for control valves.
Patent DE-4018953-A1 (DE)
Title: Disposable intermediate layer with moisture sensor and mfg. process - has absorbent layer with film backing having central hole in which sensor is located and covered with film strip
Inventor: AUGUSTIN HANS-ULRICH
IPC: A61F5/48
Filed: 1990-06-13
Abstract: Disposable intermediate has a twin layer construction comprising a moisture absorbing layer construction comprising a moisture absorbing layer and a fluid impermeable layer which has a cut-out in the form of a hole or slot. In a mfg process, the moisture sensor is located in the cut-out after drying the intermediate layer and then covered with a further film which is bonded or welded in position. Alternatively, the layer is dried out, a slit is cut in the impermeable film and the sensor inserted. USE/ADVANTAGE - The layer is incorporated in fabrics or beds to absorb and measure moisture and overcomes the problems of pre-absorbency of moisture in sensors in an existing process.
Patent DE-4020534-A1 (DE)
Title: Microfine cement clinker prodn. from limestone sludge - is by passing into hot gas stream to which carbon mon:oxide is added
Inventor: WISSING WILHELM
IPC: C04B7/44
Filed: 1990-06-28
Abstract: Process consists of mixing heavy fine-grained limestone with water and 0.5-1% urea and breaking into small particles which are fed into a laminar burning gas stream to which Co is added. This produces an aerosol at 1450-1600 deg. C in which the particles are dried, calcinated and sintered and burnt through so that all the crystals including CaO are melted. Resultant ball-shaped drops of silicate material are rapidly cooled with cold gas/air or vapour cooled.  This hardens their surface and prevents sticking together and sticking to the furnace wall. Aerosol is destroyed in a cyclone where the clinker particles are sucked away into silos. Hot gases are passed to a heat exchanger and filters before being exhausted. USE/ADVANTAGE - Useful in cement factories in place of raw materials. Considerable saving in thermo- and electro-energy. During calcination of the particles when the limestone is broken up, wollastonite Ca3(Si3O9) is produced which melts at a lower temp. than CaO.  Prevention of CaO crystals from precipitating out of the particles is achieved by sintering the particle surfaces in the early stages.
Patent DE-4021424-A1 (DE)
Title: Low pressure sensor for gas or liq. - has pressure membrane carried monolithically in frame
Inventor: GERLACH GERALD DR ING
IPC: G01L9/00
Filed: 1990-07-05
Abstract: A semiconducting pressure sensor for low pressure consists of membrane (1) carried monolithically in a clamping frame (2) and a flexurally stiff centre (3) monolithically enclosed by the membrane. The latter contains parts of an electromechanical transducer or its centre is part of one. The membrane has two or more narrow sections (1a) narrower than the centre and wider regions connecting them. The membrane is of constant thickness. USE/ADVANTAGE - Measuring low static and dynamic pressures, pref. below 1kPa, in gases and fluids. Reduced mfg.  costs.
Patent DE-4023047-A1 (DE)
Title: Installation of hand-brake in motor vehicle - by first assembling lever and mounting bracket before fitting in vehicle
Inventor: SCHNEEWEISS MANFRED
IPC: B60T7/10
Filed: 1990-07-20
Abstract: The invention concerns a method of installing a pre-assembled handbrake in a motor vehicle. The hand-brake lever (20) is mounted in the vertical position on the pivot pin (18) which is attached to the mounting bracket (16) and the end of the cable (22) is connected to the lever (20). The mounting bracket (16) is then fastened to the bodywork (78) and the cable sheath (24) is located in the bracket by means of ratchet teeth (66) formed integrally with the sheath (24) and the lever (20) is swung downwards to the `off' position. USE - Motor vehicle assembly.
Patent DE-4035524-A1 (DE)
Title: Light metal cylinder for internal combustion engine piston - has electrolytically deposited wear resistant coating of nickel@ or iron@ dispersed with boron carbide
Inventor: MIELSCH GOETZ
IPC: C25D15/02
Filed: 1990-11-08
Abstract: Light metal cylinder of a piston engine has a wear-resistant coating of a Ni or Fe dispersion coating contg. tetra-B carbide. The coating is deposited electrolytically from a bath contg. the carbide. In use, the coating forms NiB2C at 350 deg.C and Ni3B from 450 deg.C or FeB and Fe2B. ADVANTAGE - Maximum resistance to wear.
Patent DE-4038416-A1 (DE)
Title: Packing equipment covering item with flexible hood - uses guide rollers located in swivelable frame between cover roller and deflection roller
Inventor: KNEIFEL STEFAN
IPC: B65B9/13
Filed: 1990-12-01
Abstract: The pair of guide rollers (10, 11) is located swivellable about an axis (19) vertical to the sheet plane in the front of the deflection roller (12). A sensor (23) for sheet skew and a swivel control (20, 24) are provided for the pair of guide rollers. The sensor consists of a light barrier and the control system (20, 24) is provided with a servomotor (20). The sheet sheath is pneumatically opened, using at least one suction unit (25) gripping the outside of the sheath (5) to pre-open it. The sheath is then fully opened by means of gripping units arranged in a vertically moving frame. The stationary sheath is then moved downwards. USE/ADVANTAGE - Covering packaged goods in stack with flexible sheath. Simple design which prevents slanting course of side folded sheath. Functionally reliable with preopening facilitating gripping operation.
Patent DE-4103393-A1 (DE)
Title: Crystalline p-amino:phenyl:sulphonyl:urea prodn. in high purity - comprises saponification of p-acetyl:aminophenyl:sulphonyl:urea under controlled temp. pH and time conditions
Inventor: NIEGEL HARALD DR
IPC: C07C303/40
Filed: 1991-02-05
Abstract: Prodn. of crystalline p-aminophenylsulphonylurea (I) comprises saponifying p-acetylaminophenylsulphonyl urea (II) at 5-65 deg. C in water and sodium hydroxide soln. for 0.5 hr., neutralising to pH 7, stirring for 0.5 hr., acidifying to pH 2-3 and stirring at room temp. for 1 hr.. The deacetylation, neutralisation and acidification are carried out at 60-65 deg. C. The wt. ratio water:NaOH:(II) is 3-10:0.5-1:1 and an inorganic acid, esp. HCl or H2SO4, is used for the neutralisation and acidification. USE/ADVANTAGE - The method provides an industrially applicable, simple and practical route to the pharmaceutically useful (I). The method gives (I) in higher yields and purity (above 99.5%) than the prod. obtd. by the process of US 2411661 which contains 2-5% byprods.. Further, (I) is easier to purify than the known
Patent DE-4107313-A1 (DE)
Inventor: ROSE BURKHARD ING GRAD
IPC: A61Q5/04
Filed: 1991-03-07
Abstract: The present invention relates to a composition for permanent deformation of human hair, which is characterised in that it contains an alkyl polyglycoside of the general formula  RO(R<1>O)nZx, where R is an alkyl group with 8 to 20 carbon atoms, R<1> is an ethylene or propylene group, Z is a saccharide group, n is 0 to 25 and x is a number between 1 and 10.
Patent DE-4110086-A1 (DE)
Title: Hinge for furniture - has wall side part with swivel part linked to hinge pin and on which intermediate piece is fitted
Inventor: SCHMID GUENTER
IPC: E05D7/12
Filed: 1991-03-27
Abstract: The single pin hinge is used to fasten a door to the wall of an item of furniture, and has a pot part fitted in the door. Its wall-side part has a swivel part (10) linked to its pin which when the hinge is installed is connected to the door-side part. On the swivel part is an intermediate piece (19) which forms the union with the door-side part. The door-side hinge part (16) has an upper side (30) facing the interior of the item of furniture when the door is closed, and an accommodation space open on its peripheral side (31) to the wall-side hinge part (4). This space is for the intermediate piece, and on the door-side hinge part the intermediate piece has a stop which has a part springing back behind an arrest surface when the usage position is reached. USE/ADVANTAGE - As a door hinge for an article of furniture which enables the door to be fitted more rapidly.
Patent DE-4110227-A1 (DE)
Title: Photocatalyst element esp. for gas phase reactions e.g. steam decomposition - has structure which may be porous or coated with semiconductive material to enhance activation of catalytic material
Inventor: HUDER KARIN
IPC: B01J35/10
Filed: 1991-03-28
Abstract: In catalyst element comprising a catalytic material on the surface of a catalyst structure, the catalyst structure (10) is in the form of a photocatalyst element with a light irradiated surface and that (i) the structure (10) is porous, the pores (36) at the light irradiated surface having a pore depth (T) corresp. to the penetration depth (E) of light into a surface layer (34) of the structure; (ii) the light irradiated surface is formed by a coating (34) which is applied onto a support body (30) and which comprises a semiconductive material in which photo-induced electrons and holes can be produced, the catalytic material (44) being located on the coating (34) and being activatable by the electrons or holes; or (iii) the catalytic material is provided in the form of adjacent individual clusters (44) on the light irradiated surface. USE/ADVANTAGE - Used for photocatalysis of liq. phase or pref. gaseous phase reactions, e.g. NOx decomposition, steam decomposition, methanol and isopropanol dissociation and isomerisation or oxidn. processes. In type (i), an extremely large surface is available for photocatalysis, all the available surface can be activated by light and the surface is limited to the size which can be activated by light. In type (ii), direct photo-activation of the catalytic material is combined with indirect activation for improved catalytic activity. In type (iii), activation is improved by the interfaces between clusters and the structure
Patent DE-4110329-A1 (DE)
Title: Dense, elastically bonded high temp. ceramic material - mfd. by calcining mullite, starch and/or cellulose@ fibres at 1600 deg. celsius in air
Inventor: KIENOW SIGISMUND PROF DR
IPC: C04B35/185
Filed: 1991-03-28
Abstract: A dense high-temp. material is mfd. by calcining potato starch and/or cellulose fibres, with mullite at 1600 deg. C in the presence of air, thus forming a bond with a high degree of elasticity. The material is mfd. by calcining mullite particles, long cellulose fibres, boric acid and ferric oxide at 1600 deg. C in the presence of air. USE/ADVANTAGE - It is claimed that the material can be used in gas turbines, car and aircraft engines, ships' propellers and space rockets, and for automobile bodywork and driven parts. On heating and cooling in operation, the material does not change its volume or shape. When used, for example, as a turbine blade coating material, it is claimed to have better adhesion than more expensive materials e.g. silicon nitride
Patent DE-4110967-A1 (DE)
Title: Optical glass fibre preform mfr. - involving tube collapsing using variable intensity heating
Inventor: KEIM NORBERT DIPL ING
IPC: C03B37/018
Filed: 1991-04-05
Abstract: In the mfr. of an optical glass fibre preform with a core and a single or multiple layer cladding, by core glass CVD on the interior wall of a glass tube and then hot collapsing of the glass tube, the novelty is that the glass tube is heated with variable intensity along its length to effect collapsing. The heating intensity is pref. controlled according to the glass tube length. Pref. heating is carried out using a moving heat source which is moved at decreasing speed from the leading end of the tube to the tube middle, the speed at the leading end pref. being 20-60 (esp. 25-50)% higher than the speed at the tube middle. Pref. speed change is terminated at or before the tube middle. ADVANTAGE - The process avoids bursting of the collapsed tube int he final closing phase and increases the operational reliability of residual gas removal from the tube during the collapsing operation.
Patent DE-4115550-A1 (DE)
Title: Vehicle with at least one level regulated axle - has hydraulic actuator with three operating chambers, independent pressure control of outer two results in vehicle roll or pitch control
Inventor: BUFLER ERNST DIPL ING
IPC: B60G11/18
Filed: 1991-05-13
Abstract: The vehicle has at least two level regulated axle (1,2) via at least one hydraulic actuator (10). Its wheels (3,4) have torsion bar springs (7,8), whose ends are connected to the wheel carrier or one of the steering members (5,6). The torsional support of the mounted ends is achieved by the hydraulic actuator. The hydraulic actuator has two pistons (11,12), movable relative to each other, and which divide the cylinder to give an operating chamber (13), as well as neighbouring second and third chambers (14,15). Both pistons are connected via connecting rods (16) to the ends of the torsion bar springs. The hydraulic pressure of both outer chambers is thereby controllable independently of the pressure of the middle chamber. According to the orientation of the actuator, roll angle or vehicle pitch with braking or acceleration can be influenced. USE/ADVANTAGE - Provides roll correction as well as a central level regulation.