baber/WOPTO huggingface dataset:
Patent DE-4112629-A1 (DE)
Title: Prodn. of alpha-keto acids from carbonyl cpds. - by reaction with new phosphonium salts and hydrogenolysis
Inventor: SCHMIDT RICHARD R PROF DR
IPC: C07F9/54
Filed: 1991-04-18
Abstract: Phosphonium salts of formula (I) are new, where Ar = phenyl opt. substd. by nonionic gps.; X = halogen. Prodn. of alpha-keto acids of formula (II) is effected by (a) reacting a carbonyl cpd. of formula (III) with (I) in an inert solvent in the presence of a base, and (b) removing the arylmethyl gps. from the resulting alpha,beta-unsatd. ester of formula (IV) by hydrogenolysis. R1 and R2 = H or organic gps., opt. forming a ring. USE - (II) include cpds. useful as intermediates for bacterial lipopolysaccharides (see DE4112630), amino acids or heterocyclic pharmaceuticals or plant protection agents.
Patent DE-4113829-A1 (DE)
Title: Automatic incandescent lamp bulb gas filling machine - uses filling heads attached to turntable and controlled valves in filling gas distribution system
IPC: H01K3/22
Filed: 1991-04-27
Abstract: The machine has a supply container (A2) for the filling gas coupled to a distribution system (A1) which feeds it to a member of filling heads. Each head provides a vacuum-tight connection to a lamp envelope which is evacuated before being filled with the gas. The filling heads (20) are mounted on a machine turntable which is indexed in unison with the distribution system and the supply container. A valve is located between the distribution system and the lamp envelope. A further valve is opened and closed under control of the filling machine. USE/ADVANTAGE - Incandescent lamp mfr. Gas is kept exremely clean and very little is lost. Amt. kept within close tolerances.
Patent DE-4118298-A1 (DE)
Title: Pulp-like short fibres with highly oriented fibrillar structure - by melting mixt. of water and acrylonitrile] (co)polymer, cooling below the m.pt. extruding the supercooled melt and breaking up the prod.
Inventor: YOON HAN SIK
IPC: C04B16/06
Filed: 1991-06-04
Abstract: Fibres (I) have a thickness distribution of 0.1-100 microns and a length of 0.1-100 mms. They are obtd. by heating a mixt. of 10-100 wt.% water and an acrylonitrile (AN) homopolymer of copolymer (II) (at least 70 wt.% An and not above 30 wt.% other comonomers (III); viscosity average mol. wt. = 10,000-600,000) to the m.pt. or above in a closed vessel to produce an amorphous melt; cooling to below the m.pt. to form a supercooled melt; extruding through a die at a temp. between the melting pt. and solidification pt. to give an extrudate with a sectional or cross-sectional structure, uniform plate-fibrils ordered and laminated by solidification and spontaneous loss of water, a fibrous crystal structure and degree of orientation of at least 80% (by X-ray diffraction); and then mechanically heating the extruded prod.. More specifically, the fibrils consist of microfibrils 0.01-1 micron thick and plate fibrils 1-10 microns thick, with fibrous crystal structure and orientation at least 80%. The supercooled melt is formed at a temp. between the m.pt. and the solidification pt. of the relevant polymer hydrate (IV). The mixt. contains 10-50 wt.% water (w.r.t. polymer); the amorphous melt if formed at a temp. between the m.pt. of (IV) and 220deg.C. The microfibrils and plate fibrils consist of polymer (II) as above, pref. with mol. wt. 50,000-350,000 and contg. at least 85 wt.% AN and not above 15 wt.% (III). USE/ADVANTAGE - (I) consist of large numbers of fibrils with a large surface area and irregular structure, resulting in very strong bonding properties. (I) are therefore useful for the prodn. of composite materials, thermal and electrical insulation, cement-reinforcing material, and even for the prodn. of paper.
Patent DE-4118697-A1 (DE)
Title: Inking mechanism for multiple colour printing machine - has simple mechanism to change ink supply, using two ink troughs
Inventor: HEILER KURT
IPC: B41F31/30
Filed: 1991-06-07
Abstract: The machine (1) has two inking mechanisms (6,7) mounted one above the other. Each inking mechanism has two ink troughs (16,17) and (18,19) with each trough being equipped with an ink applying roller (20,21) and (22,23). Each trough is pivoted to a lever which can pivot about its midpoint but is normally held in a vertical position. In this vertical position the roller (20), of the trough (16) of the upper inking mechanism, is brought into contact with the ink transfer roller (24). When the supporting lever is rotated through 180 deg. the roller (21) of the other trough (17) is brought into contact with the ink transfer roller and so changes the ink supply source. The ink source of the lower inking mechanism is changed in a similar manner. USE/ADVANTAGE - Ink changing mechanism for printing machine. The mechanism can be fitted to any type of rotary printing machine.
Patent DE-4119516-A1 (DE)
Title: Simplified drum washing machine with washing soln. container - has bearing cross with several radial support arms one of which supports drive motor
Inventor: BEIER CHRISTIAN
IPC: D06F37/26
Filed: 1991-06-13
Abstract: A drum washing machine incorporates a washing soln. container for receiving a laundry drum that revolves round a horizontal axis and a bearing cross featuring several radial support arms. The cross is fastened on the washing soln. container and features a bearing for the drive shaft of the laundry drum. One of the support arms is extended beyond the periphery of the washing soln. container and serves as the drive motor support arm. The support arm end on the drive motor side incorporates a clamp bushing for accommodating the drive motor and the motor features a clamping or centering attachment to permit its mounting in the bushing. ADVANTAGE - The number of components in an automatic washing machine is reduced.
Patent DE-4124742-A1 (DE)
Inventor: SPANN GUSTAV
IPC: A47J37/04
Filed: 1991-07-25
Abstract: The cooking of potato chips in fryers is expensive, causes pollution and has drawbacks from the nutritional point of view. In order to avoid these disadvantages, cooking devices have been proposed in which the chips are cooked by radiant heat or in a stream of air. The results have not yet proved satisfactory. A chip-cooking device is therefore proposed which is fitted with air-directing devices (8, 26, 33) which circulate the air past the heater (11), then parallel to the longitudinal axis of a basket (2), towards the apertures in the basket (2), radially through the apertures, and back, parallel to the longitudinal axis of the basket (2), to the fan.
Patent DE-4125454-A1 (DE)
Inventor: PEDAIN JOSEF DR
IPC: C08G18/48
Filed: 1991-08-01
Abstract: Coating systems which contain   A. Polyurethane containing ionic groups and containing polyethylene oxide units which are defined by amount and sequence length, or a precursor containing a blocked NCO prepolymer and a crosslinking agent, and optionally   B. an organic solvent, are suitable for the production of coatings which are permeable to water vapour and have a low tendency toward swelling.
Patent DE-4130356-A1 (DE)
Inventor: HORX MANFRED
IPC: D01F6/12
Filed: 1991-09-12
Abstract: The invention relates to a fibre material made of PTFE and possibly hydrophilating additives, the structure of which gives it a wide range of uses in the production of diaphragms for alkaline chloride electrolysis and for filter layers. According to the invention the fibre material consists of bunches of fibres, in turn consisting of individual microfibrils, where the interstices between the microfibrils are irregularly shaped. The fibre material is made by treating a PTFE dispersion consisting of a salt solution with PTFE particles and possibly hydrophilating additives in a stream of hot gas/vapour in a fluidised bed apparatus filled with inert bodies. The process of the invention makes it possible to produce the fibre material of the invention in a technologically refined and economical manner in larger quantities. The length of the fibres can be adjusted by observing the parameters mentioned in the invention.
Patent DE-4131403-A1 (DE)
Title: Dispenser for loose powder from hopper -  has shutter closing and opening outlet at bottom of shaft, with light metering system
Inventor: BOHLER LORENZ
IPC: B65D90/58
Filed: 1991-09-20
Abstract: The dispenser for loose powdered material has a hopper (1) to which is attached a slide shaft (6) at the bottom of which is an outlet (7) which is opened and closed by a shutter. The shutter tilts to the horizontal at an angle of between 30 and 80 degrees, preferably 60 degrees. The front edge of the shutter has a wedge shaped section symmetrical to the direction in which the shutter moves as a result of a pneumatic cylinder. The shutter is connected to an optical light metering system connected by controls to a control unit. The dispenser has a balance beneath the outlet (7). USE/ADVANTAGE - The dispenser discharges loose hygroscopic powder gravimetrically and accurately.
Patent DE-4135224-A1 (DE)
Title: Recliner or orthopaedic bed with wide ranging lift and inclination - has dual electric drive and simple link system providing parallel motion lift and independent raising or lowering of head or foot
Inventor: SAGEL HEINRICH
IPC: A61G7/005
Filed: 1991-10-25
Abstract: The recliner or orthopaedic bed includes a mobile base frame (1) and a movable mattress frame (2) connected by a system of pivoted (303,315) and articulated links (20,21,30L,31L). Two separately controlled reversible electric drives (50,55) raise or lower the extremities of the frame (2) at its head or foot independently of the height of its centre above the base frame (1). Manual control of the required position of the frame (2) is effected by a controller which incorporates switches for vertical raising and lowering. Both drives (50,55) are activated and two further switches for tilting with one drive stationary. USE/ADVANTAGE - Provides wide range of heights above ground with controlled parallel motion of mattress frame. Either end of bed may be raised or lowered independently and any subsequent vertical adjustment maintains inclination. Flexibility of system achieved economically.
Patent DE-4141559-A1 (DE)
Title: Holder for electrical or electronic building blocks - has U- or V-shaped spring loops at ends engaging with cross bars and central peg for location
Inventor: HAXEL GERD
IPC: H05K7/14
Filed: 1991-12-17
Abstract: A holder for an oblong building block of electrical or electronic components has spring elements at the ends with which the holder is retained in two cross bars (3, 4) in the cabinet. The spring elements (23) take the form of a U- or V-shaped loop. They extend from the base of the mount at least to the level of a recess (33) in a sidewall (32) of the cross bars. The spring loops have projections (29) that lie in the recesses. A locating peg (41) on each holder protrudes through a corresponding hole (11) in each cross bar. The ends of the holder have recesses (45) for electrically conducting contact springs. In the cross bars transverse grooves (48) also hold spring members. ADVANTAGE - Allows use of narrow cross bars while still giving secure mounting. ADVANTAGE - Allows the use of narrow cross bars but still giving a secure mounting.
Patent DE-4142287-A1 (DE)
Title: Cavitation-resistant dry friction bearings - have sliding layer contg. mixt. of lead oxide, lead@, PTFE, TFE-per:fluoroalkyl-vinyl] ether] copolymer, and nitride or carbide
Inventor: WEGNER KARL-HEINZ DIPL ING
IPC: C08L27/12
Filed: 1991-12-20
Abstract: Dry friction bearings (I) comprise a support, an interlayer (A) and a sliding layer (B) contg. a mixt of metal/metal oxide (II) and fluoropolymers (III). Mixt. (II) contains Pb oxide and Pb in the ratio 1.22-1.66, (III) is a mixt. of PFA (TFE-perfluoroalkyl vinyl ether copolymer) and PTFE in the ratio 0.8-1.2, and layer (B) also contains another non-metallic component in the form of a nitride or carbide (IV). Pref., amts. are 20.5-24.5 vol.% Pb, 30-34 vol.% Pb oxide, 20-24 vol.% PTFE and 20-24 vol.% PFA. Layer (B) also contains Fe3O4. Pb oxide has particle size below 10 microns, and pref. consists of beta-PbO (yellow PbO) or PbO2. (IV) is Si, B, Al or Mg nitride in amts. of 1.3-1.7 vol.%, or SiC. USE/ADVANTAGE - (I) have partic. good sliding properties, combined with excellent resistance to cavitation and wear under high-frequency operation, thus enabling long-term maintenance-free operation. They are also simple and economical to produce.
Patent DE-4202805-A1 (DE)
Title: Generator for supplying DC to excitation coil of magnet e.g. of solenoid valve - supplies pulsed current at frequency such that armature stays in end position when coil is switched off between pulses due to remanence
Inventor: PLENER HELMUT
IPC: H01F7/18
Filed: 1992-01-31
Abstract: A current generator for controlled supply of direct current to the exciting coil (1) of an actuator magnet, especially a solenoid valve. The armature of the valve is held in a stroke end position when the coil (1) is switched on. The d.c.is fed as pulses to the coil (1). The frequency of the pulses is such that when the coil (1) is switched off between pulses the armature stays in the end position due to magnetic resonance. ADVANTAGE - Has reduced thermal stress and is therefore more reliable and has a longer life.
Patent DE-4205945-A1 (DE)
Title: Colour-ribbon guide for travelling head of printing machine - has guide rollers mounted on swivelling stirrup fixed to head for automatic positioning and elimination of ribbon threading
Inventor: GEIS ALBRECHT DIPL ING
IPC: B41J35/04
Filed: 1992-02-24
Abstract: The guide has rollers (3) positioned on both sides of the print head housing (2) whose axes (4) are at right angles to the travel (5). The ribbon (6) passes in front of the housing (2) and behind the rollers (3) which are mounted on opposite limbs of a U-shaped wire stirrup (7). The stirrup (7) pivots about an axis(8) parallel to the travel (5) supported by a slider assembly (9) which guides the head (1). The stirrup (7) rotates outwards from its ribbon-guiding position (10) against a torsion spring (11) to enable ribbon changing but is otherwise locked in its operational position (10) by the clips (10b). USE/ADVANTAGE - Provides simplified ribbon change by eliminating threading of ribbon and automatically aligns in operating position. Has locked position for stirrup of advantage to machines with swivelling print heads whose closing might otherwise be impeded.
Patent DE-4214839-A1 (DE)
Title: Valve drive for IC engine - involves lift valve operated in opening direction by cam against force of pneumatic spring
Inventor: BARETZKY ULRICH DIPL ING
IPC: F01M9/10
Filed: 1992-05-05
Abstract: The closure spring (10) is pneumatic. It has a static cylinder (11) is which a piston (13) connected to a valve shaft (5) is displaceable and limits a work chamber (14) in which at least one pressure gas feed conduit (17) issues. The mouth (19) of the pressure gas feed conduit is located at a position in the cylinder inner surface (16) which is covered by the piston in its movement from the upper end position. The pneumatic cylinder (13) is of one-piece structure with the valve guide casing (6) and the structure is of material with high heat conductivity, being inserted in corresp. recesses (12,7) in the cylinder head (1,2) with a tight fit. At least one calibrated leakage hole (22) runs from the work chamber (14). USE/ADVANTAGE - Valve drive for IC engine permits higher engine speeds.
Patent DE-4215785-A1 (DE)
Title: Braking controller for roller-cutter in mining operation - imposes limit on frequency of supply from inverter to traction motors until brake release is signalled e.g. by proximity sensors
Inventor: MASUHR RAINER DIPL ING
IPC: E21C35/04
Filed: 1992-05-13
Abstract: The cutter (1) with its two rollers (2, 3) is held esp. on steep inclines by special brakes (8, 9) acting on the traction motors (6, 7) whose supply current frequency is measured independently of the invertor (33). The latter is run-up initially to a min. frequency of e.g. about half of the nominal slip frequency of the three-phase induction motors. Further increase in frequency is possible only when a signal to the controller (28) indicates that the brakes are off. ADVANTAGE - Device guarantees freedom from malfunction of brakes in event of disturbances in transmission of data from cutter.
Patent DE-4216667-A1 (DE)
Title: Compsn. for treating hair - contains alpha-keto-di:carboxylic acid to remove residues of hydrogen peroxide
Inventor: KONRAD EUGEN
IPC: A61Q5/00
Filed: 1992-05-20
Abstract: A compsn. for treating the hair contains an alpha-ketodicarboxylic acid or physiologically acceptable salt. Pref. the acid is alpha-ketoglutaric acid or a salt, in amt. of 0.1-10 wt.%, and the compsn. has pH 2-7, and is a soln., enulsion, cream, gel, powder or aerosol foam. It may also contain anionic, cationic, amphoteric, zwitterionic or nonionic surfactants, foam synergists or stabilisers, sequestrants, emulsifiers, natural substances, pigments, perfume oils, opacifiers, pearl gloss agents, etc. USE/ADVANTAGE - Use of alpha-ketodicarboxylic acids or salts to remove residues of H2O2 from the hair is claimed. Residual H2O2 damages and bleaches the hair and affects later dyeing. The compsn. is effective at alkaline and acid pH, physiologically acceptable, and stable.
Patent DE-4218975-A1 (DE)
Title: Housing used as component of hydraulic appts.
Inventor: SCHULTE HEINZ
IPC: F16B39/34
Filed: 1992-06-10
Abstract: In front of the inner thread (15,20) is a free hollow(18,22) of which the dia. is equal to the nominal dia. (D) oreven slightly larger than it to the extent of approximately 1 mm.The depth of the free hollow is approximately twice the divisionof the inner thread. The housing (10) has a threaded part (17,31)coated with a securing and/or sealing means (23,24) and screwedinto the screw-in hole (11). The thread (32) of the threaded part(31) is partly located in the free hollow (22). The threaded partis a threaded pin (17) or a closure screw (31) with a conicalthread (32). The thread (15,30) of the threaded part (17,31) isat least partly coated with an elastic, adhesive nylon layer(23,24).
Patent DE-4222033-A1 (DE)
Title: Video output stage using earth as black level - uses single polarity operating voltage to drive amplifier stage
Inventor: SCHUBERT MICHAEL FRANK
IPC: H04N5/18
Filed: 1992-07-04
Abstract: The output stage has an amplifier stage (10, 140) for adapting a video signal power to the requirement of the appts. in which it is installed. The amplifier stage (10, 140) is supplied by an operating voltage of only a single polarity. The cold end of the outlet (80) of the output stage is at the voltage level of the black level of the video signal. The amplifier stage (10) may be a differential amplifier set at a reference value which is a proportion of the operating voltage so the synchronising voltage is kept at the reference level. ADVANTAGE - Reduces cost of power supply by using single working voltage.
Patent DE-4223032-A1 (DE)
Title: Drum washing machine has an emptying pump - which is switched on/off via level registering device
Inventor: HOFMANN ERWIN
IPC: D06F33/42
Filed: 1992-07-14
Abstract: A drum washing machine is equipped with a rotating laundry drum, which is connected to a discharge system consisting of an emptying pump and a discharge tube. A level registering device controls the water supply to cater for different levels in the washing solution container. During the pumping-off phase, the emptying pump is switched on or off via the level registering device. ADVANTAGE - The emptying pump can only be switched on when there is water in the bottom section of the washing solution container.
Patent DE-4223160-A1 (DE)
Title: Gas compression plant for industrial supply - has gas over-compressed, with expansion providing final pressure and temp.
Inventor: GRAETZ GUENTHER DIPL ING
IPC: F17D1/04
Filed: 1992-07-10
Abstract: The gas compression plant (1) for a pipe supply in a compressor station, has gas delivered at pressure to the compression stage and then cooled through a heat exchanger. It is delivered at a lower temp. of max. 0 deg. C, and at a higher pressure to facilitate further transportation. At certain time intervals the gas is compressed to significantly higher pressures, overpressure, than the delivery pressure. The compression gas is cooled to a temp. above that of delivery, final cooling is achieved via the expansion of the gas to the required exit pressure. USE/ADVANTAGE - Simplified design of gas compression plant with reduced operational risk.
Patent DE-4224715-A1 (DE)
Inventor: SCHMITT NORBERT DIPL ING
IPC: C09K23/28
Filed: 1992-07-27
Abstract: The pearl lustre dispersions essentially consist of a fatty acid glycol ester as component conferring a pearl lustre, of two particular surfactant compounds, namely a betaine or anionic surfactant and a fatty alcohol alkoxylate, and of glycerol in a particular amount in each case and optionally water. The pearl lustre dispersions which also contain water do not require their own preservative and are free-flowing and thus easily handled. They have a pronounced pearl lustre and can easily be incorporated into the surfactant compositions, whereby the latter acquire the desired pearl lustre.
Patent DE-4225223-A1 (DE)
Inventor: SCHULZ PAUL DR
IPC: C09K23/00
Filed: 1992-07-30
Abstract: The colour of surfactants can be improved by bleaching them with peroxygen compounds in the presence of bleach boosters selected from the group comprising (a) double-layer hydroxides and (b) triacetin.
Patent DE-4230499-A1 (DE)
Title: Aq. impregnating agent for gaskets - comprising activated silicone microemulsion
Inventor: JUERGENSEN PETER
IPC: C09K3/10
Filed: 1992-09-14
Abstract: Aq. impregnating agent for gaskets comprising an activated silicone micro-emulsion. USE/ADVANTAGE - The compsn. is used to impregnate gaskets such as cylinder head gaskets of internal combustion engines to increase their water tightness and resistance to moisture, esp. to renovate faulty gaskets in situ. The silicone micro-emulsions have excellent impregnating performance and penetrate well into the gasket. They can be applied to the external faces of the gasket e.g. with a soft brush or pipette or they can e.g. be introduced into the cooling water system of an engine to seal faulty gaskets in situ. The compsns. are solvent-free and environmentally safe.
Patent DE-4231123-A1 (DE)
Title: Handle and locking device installed in door or window frame - incorporates bearing sleeve for square-section shaft accommodated in fixed sleeve in frame and has spring-loaded drive device
Inventor: GOLDSCHMIDT HANS-GERD
IPC: E05B3/08
Filed: 1992-09-17
Abstract: The window or door latching device has a handle (1) with a square bore fitting onto a square-section shaft (5). There is a bearing sleeve (2) which fits onto the shaft and is spring-loaded (11) away from the handle. A flange (12) on the end of the bearing sleeve has four equispaced axial projections (13) engaging corresponding grooves (14) in a locking actuating element (6) in a housing (7) in the door or window frame. A projection (8) on the end of the shaft (5) engages in a radial bore (9) in the locking actuating element to prevent the handle being pulled out of the frame. USE/ADVANTAGE - Simple handle and locking device installed in door or window frame.