baber/WOPTO huggingface dataset:
Patent DE-3933661-A1 (DE)
Title: Catalyst for hydrogenation of acetophenone to methyl benzyl alcohol - made by impregnating silica support with solns. of copper tetr:amine carbonate and ammonium chromate, and drying prod.
Inventor: FISCHER LOTHAR DR
IPC: C07C29/145
Filed: 1989-10-09
Abstract: A silica-supported Cu/Cr catalyst (I) for the hydrogenation of acetophenone (AP) to methylbenzyl alcohol (MBA) is claimed; (I) contains 5-15 wt.% Cu and 0.2-2 wt.% Cr and is produced by impregnating the support with a soln. of copper tetramine carbonate (II) and a soln. of ammonium chromate (III) or a mixt. thereof, and drying the prod.. Pref. support is porous silica gel in the form of beads with specific pore vol. 0.9-1.1 cm3/g and internal BET surface 250-350 m2/g; pref., the support is impregnated with a 1.6M aq. soln. of (II) and a 0.1M soln. of (III) at 85-95 deg.C., dried at 100-20 deg.C. and activated with hydrogen before use. USE/ADVANTAGE - (I) is useful for the prodn. of MBA, a solvent used in paints and strippers, etc.. W.r.t. prior-art Cu/Cr catalysts, (I) contains less Cu stabilised with a small amt. of Cr; (I) enables the hydrogenation of AP to MBA to be carried out more economically, with higher yield and higher selectivity.
Patent DE-3934532-A1 (DE)
Title: Detection of oxidisable gases e.g. carbon mon:oxide - using metal oxide and phthalocyanine sensors for detection in mixt. whose components tend to react directly
Inventor: RUMP HANNS
IPC: F02B1/04
Filed: 1989-10-17
Abstract: The arrangement contains one or more metal oxide sensors and one  or more phthalocyanin sensors.  The sensor signals are processed by an evaluation unit to increase the mutual influence of simultaneously present reducible and oxidisable gases. The evaluation unit combines the signals from the two sets of sensors according to stored functions. ADVANTAGE - Provides reliable detection of target sustance e.g. carbon monodixe despite presence of mixture whose components tend to react directly near sensor surface.
Patent DE-3934848-A1 (DE)
Title: Camshaft with single control for several valve timings - has hollow shaft with peripheral slits firmly coupled to drive wheel
Inventor: INGELHEIM GRAF VON
IPC: F01L1/08
Filed: 1989-10-19
Abstract: The camshaft has several control timings adjustable by a single control member in the form of an inner shaft (9) in the main hollow shaft (2), by adjusting the inner shaft, the two to four control timings. The timings are determined by the position of the leading and rear flanks of the cams (3, 6). They can be varied independently of each other. ADVANTAGE - COmpact design for multi-timing control.
Patent DE-3942154-A1 (DE)
Title: Prefab chimney with central flue - has outer wall of porous concrete with thermal insulation around flue
Inventor: FELBERMEIR JOHANN
IPC: F23J13/02
Filed: 1989-12-20
Abstract: The chimney has a central flue (4) enclosed in an outer wall (1) with thermal insulation (7) between the flue and the outer wall. The latter is formed from hydraulically hardened, porous concrete and has an outer surface with a rectangular cross-section. The flue is made of ceramics and is reinforced by an outer tube (6). The thermal insulation extends from the outer surface of the tube to the inner surface (2) of the outer wall. Alternately the flue may be made from stainless steel. ADVANTAGE - Compact, lightweight design, with reduced condensation.
Patent DE-3943451-A1 (DE)
Title: Heat irradiation and pressure resistant cable
Inventor: PATERSON JOHN RICHARD
IPC: C08K3/34
Filed: 1989-06-14
Abstract: The electric cable is formed by an electrical conductor encased in insulating material comprising a mixt. of elastomer, silicon carbide and iron oxide. Silicon rubber can be used as the elastomer, contg. between 3% and 35% by wt. of Fe2O3, and 40% to 45% by wt. of silicon carbide.  The conductor can consist of a large number of conductive strands of the same length, each electrically insulated, and encased in insulating material of the same mixt.
Patent DE-4002559-A1 (DE)
Title: Artificial organs, esp. pancreas - comprising interconnected sensor and reactor for secreting biologically active substances
Inventor: BODZIONY JAKOB DR
IPC: A61F2/02
Filed: 1990-01-30
Abstract: Artificial organs capable of secreting biologically active substances (esp. hormones) comprise a sensor and a reactor, both made of semipermeable material. The sensor is implanted in an artery or vein. The reactor is extracorporeal or implanted. The sensor and reactor are connected together so as to permit the through-flow of biological signals and metabolic substances (sic). Pref. the sensor (A) comprises a hollow-fibre semipermeable membrane coated with endo- or meso-thelial cells and is implanted in a vein. The reactor (B) is an artificial pancreas comprising a hollow-fibre semipermeable membrane contg. isolated allogenic islets of Langerhans and is implanted in the kidney tissue. The sensor and reactor are connected by a closed loop of silicone capillary tubing (C). By means of a pump (D), a perfusion medium is circulated first through the sensor, where it picks up glucose by equilibration with the surrounding plasma, and then through the reactor, where the islets respond to increase in glucose concn. by releasing insulin. The response time is less than 10 mins..
Patent DE-4009348-A1 (DE)
Title: Passenger train coach window - has at least one pane and frame fixed in wall aperture in clamp retainer releasable from coach exterior
IPC: B61D25/00
Filed: 1990-03-23
Abstract: The frame clamp retainer is formed from several rotary catch-type pieces (27), each of which is fitted in a plane transversal to that of the pane, and axially displaceable to a threaded spindle (23) located in the pane frame (14). Each piece (27) is coupled swivellably to the threaded spindle (23) between a release position outside the periphery of the wall aperture (15) and a clamp position in which it engages behind the edge (36) of the wall aperture (15). The pivot path of each clamp piece can be limited by a stop (38) on the pane frame (14) from a orofile surface of which it is formed. The clamp piece locates against it with two counter surfaces (37) connected by transition curves. USE/ADVANTAGE - As a simpler and more secure way of fixing windows in railway passenger coaches, eliminating the customary rubber clamp profile employed.
Patent DE-4016049-A1 (DE)
Inventor: MUELLER STEFAN DR
IPC: C07D261/08
Filed: 1990-05-18
Abstract: 3-Isoxazolylbenzyl esters of the general formulae Ia and Ib   <IMAGE> Ia  <IMAGE> Ib  where R is halogen, C1-C4-alkyl, C1-C4-haloalkyl, C1-C4-alkoxy, C1-C4-haloalkoxy, C2--C4-alkenyl, C2-C4-haloalkenyl, C2-C4-alkynyl, C2-C4-haloalkynyl, unsubstituted or substituted phenylethenyl, C3-C8-cycloalkyl, aryl, hetaryl, CO2R3 or CONR4R5, R3, R4 and R5 are each hydrogen or C1-C6-alkyl, n is 0, 1 or 2, and the radicals R may be different when n is 2, R1 is halogen or C1-C4-alkyl, R2 is hydrogen, C1-C4-alkyl, C2-C4-alkenyl, C2-C4-alkynyl or cyano and A is the carbonyl radical of an acid component usually found in pyrethroids, are contained in pesticides.
Patent DE-4017394-A1 (DE)
Title: Feed frame for cattle stall - has upper and lower cross bars with fixed vertical cage rods between
Inventor: SCHRIJVER HENDRIKUS ANTONIUS M
IPC: A01K1/06
Filed: 1990-05-30
Abstract: In a feeding frame for cattle in a stall, with an upper and lower horizontal beam and fixed vertical cage rods between, the unlocking bar (9) is a profile that can be pushed on the outer side on or along the upper beam (1). The profile has holes (10, 11, 15) for parts of the matching latch (8) serving at least for a grip. The arrangement also allows raising the engagement between the latch (8) and the folding rods (6) when pushing in at least one direction. USE/ADVANTAGE - The food frame is simple to construct and the parts are easily accessible for maintenance and replacement.
Patent DE-4017744-A1 (DE)
Title: Antilock protected hydraulic braking system for motor vehicle - has synchronised pistons in chambers of tandem master cylinder with controlled connections to front wheel brakes
Inventor: SCHIEL LOTHAR
IPC: B60T13/565
Filed: 1990-06-01
Abstract: The master cylinder (2) coupled to a vacuum servo amplifier (1) contains two pressure chambers (7, 8) bounded by separate pistons (9, 10), which move in synchronism at constant axial spacing. The hydraulic line (13) connecting the second chamber (8) to the front wheel brake cylinders (20, 21) is closed in antilock conditions by two blocking valves (44, 45) under central electronic control (33). Their outlets are connected to the first chamber (7) by a pressure-equalising arrangement (15) of two hydraulic spaces (17, 18) with springs opposing movement of their separator (16). ADVANTAGE - Simplified structure with shortened master cylinder can be mfd. at esp. low cost.
Patent DE-4018614-A1 (DE)
Title: Frequency converter for quadrature modulator or demodulator
IPC: H03D1/22
Filed: 1990-06-11
Abstract: The frequency converter for a quadrature modulator or demodulator uses a heterodyne signal genreator (TG). An associated regulating circuit stabilises the 90 degrees phase shift between the 2 quadrature heterodyne signals (TI,TQ). Pref. the heterodyne signal generator (TG) contains an amplifier, controlled by an oscillator signal (LO), a further regulating circuit containing a symmetry detector for the pulse ratio of the amplifier output signals, for maintaining a pulse ratio of 0.5. A quadrature phase divider pref. uses a frequency doubler and a master slave flip-flop in series, the outputs of the master stage and the slave stage providing here 2 quadrature signals (TI,TQ).
Patent DE-4019847-A1 (DE)
Title: Camera with flash capacitor and unit for reception of battery - has battery recess on one side in which capacitor nestles
Inventor: NAKAMURA TAKAYA
IPC: G03B15/05
Filed: 1990-06-21
Abstract: The battery (1) has an essentially elliptical cross sectional shape and the recess (1a) is designed at a side surface, which runs in the direction of the largest axis of the ellipse. The capacitor (2) has an essentially cylindrical shape. The camera housing (3) has a handling part (4) for the reception of the capacitor (2) as well as the battery. The battery is arranged in the handling part (4), such that their longitudinal axes run respectively in a vertical direction.  The capacitor (2) and the battery (1) are arranged in the holding part (4) near a film spool chamber (6) or a film cartridge chamber (6). USE/ADVANTAGE - Camera with combination mounting for battery and flash capacitor. Camera uses lithium battery. Reception space for capacitor and battery is kept as small as possible.
Patent DE-4021696-A1 (DE)
Title: Nonwoven packing material - comprises natural fibres modified by finishing chemicals to increase spring elasticity
Inventor: KESSLER RUDOLF PROF DR RER NAT
IPC: B32B27/12
Filed: 1990-07-07
Abstract: The nonwoven of natural fibres, as a packing material, is modified by conventional woven fabric finishing chemicals, to increase the spring elasticity of the bonded fibre material. Pref. the finishing agent is applied as a foam, or the material is immersed and impregnated with the finishing chemicals. The nonwoven can be covered by one or two outer layers to give a composite structure to form macroscopic air chambers between the non-woven and the outer layers. At least one of the outer layers is of a material with little flexibility, pref. of plastics. The finishing chemicals are applied evenly and across the whole surface area of the non-woven, or are applied in local zones. ADVANTAGE - The technique allows harvested materials to be used, as an alternative to plastics or paper prods.
Patent DE-4027496-A1 (DE)
Title: Data spreading for coded digital information transmission system - using similar matrix at transmission and reception ends with line write-in and column read=out
Inventor: HAGENAUER JOACHIM DR ING
IPC: H04L1/00
Filed: 1990-08-30
Abstract: The coded data to be transmitted is entered in respective lines of a matrix, with column read-out of the latter for supplying to the transmission channel.  At the reception end the data is entered in the columns of a similar matrix which is read out in lines, for supplying to a decoder. The reliability of the transmission channel is evaluated at discrete time points at the reception end, the obtained channel information represented in the matrix by a word with a given number of bits. USE/ADVANTAGE - E.g. for mobile radio or satellite communication. High decoding speed.
Patent DE-4034705-A1 (DE)
Inventor: NEUMANN MARTIN
IPC: A61B90/00
Filed: 1990-10-31
Abstract: A surgical closure which can be repeatedly opened and closed, especially one for an abdominal incision, consisting of flexible fabric or plate-like securing means which can be firmly secured to the bodily tissue close to the incision but can be released therefrom and with a closure bringing together its end regions above the incision, which can be opened and closed at any time, is to be improved in such a way that a completely pressure-tight closure is obtained but which may be opened as often as desired. This is achieved in that it is fitted with a securing component (15) surrounding the incision on all sides which has an aperture (4) applicable above the incision and consists of a tube (5) of flexible material extending upwards from and surrounding the aperture (4) and the tube (5) itself acts as the closure or is fitted with such.
Patent DE-4034929-A1 (DE)
Title: Electrically heated cushion for comfort of wheelchair patient - is laid on or fixed to seat and back of chair, and heated by battery current
Inventor: SCHNEIDER ALEXANDRA
IPC: H01M50/247
Filed: 1990-11-02
Abstract: The cushion (1) is shaped and folded to fit the squab and back-rest of the wheelchair. Its heating elements are connected by a fexible cable (6) to a rechargeble battery (2) with a holder (3) on one side mfd. e.g. of angle iron. An on deg ff switch is mounted on top of the battery (2), which also has two electrical sockets (5) for recharge purposes. ADVANTAGE - Angle-iron attachment to battery facilitates its mounting on frame of wheelchair. Easy removal of battery during summer months.
Patent DE-4034955-A1 (DE)
Title: Modified honey contg. therapeutic additives - introduced by feeding mixt. of honey and additive in hive
Inventor: MEYER GUENTER
IPC: A23L21/25
Filed: 1990-11-02
Abstract: A modified honey contains therapeutic additives which are not taken up by, or available to, bees, but are introduced by the bees themselves. The additives are mixed into a pure honey, pref. a cheap mixed honey, and this mixt. is fed to the bees in the hive. The additives are plant juices, plant essences and/or synthetic active agents. ADVANTAGE - The additives do not separate out from the honey, and their addn. avoids the introduction of unwanted microorganisms.
Patent DE-4101285-A1 (DE)
Title: Waste removal system for building - has carrier with container and hinged lid
Inventor: ROTH ECKART
IPC: B65F1/16
Filed: 1991-01-17
Abstract: The waster removal system is esp. for use in hospitals etc. A carrier unit (4) supports a suspended waste container (5) with top insert opening (6). A hinged lid (7) above the container is pivoted between a closing position covering the insert, and a raised open position. The container forms an actuator for the opening movement of the lid. It has a press-down section (8,8'), to raise the cover, when the container is pivoted. ADVANTAGE - Hygienic.
Patent DE-4103104-A1 (DE)
Title: Bus with two IC engines coupled to common transmission - which is linked to differential, driving axle drive chain, with differently linked individual engines
Inventor: HAGIN FAUST DIPL ING
IPC: B62D47/02
Filed: 1991-02-01
Abstract: Omnibus having two combustion engines (2, 3) with the first engine (2) arranged in series with the drive (8) and the second engine (3) arranged above the drive or the first engine. The drive shaft of the first engine is either floatingly connected with the input shaft of the drive (8) or displaced sideways and/or vertically in relation to the input shaft, with power transmission within the intermediate drive (6) achieved by gears or chain wheels. ADVANTAGE - Space-saving cost-effective layout for an omnibus having two engines.
Patent DE-4111603-A1 (DE)
Title: Current switch for electric cooking plate - has lever mechanism operating switch upon placement or removal of pan
Inventor: HARTLI VINKO
IPC: H05B3/68
Filed: 1991-04-10
Abstract: The current switch allows the current to be switched on and off in response to the pan being placed on and removed from the surface of the working plate, via a mechanical right angle lever (9). The latter has a lower lever arm (20) acted on by the pan directly, or via an intermediate operating rod, the upper lever arm contained within a rectangular housing (2) extending perpendicular to the surface of the surface of the cooking plate and housing is attached weight (10). The lever (9) pivots about a pivot bolt (14) at the top edge of the housing (2) adjacent the cooking plate, to cooperate with the operating button for the current switch. ADVANTAGE - Automatic current switching, preventing wasted energy or fire hazard.
Patent DE-4114731-A1 (DE)
Title: Ship propulsion system using internal pipe - mixes water with compressed air to generate flow through pipe
Inventor: KELM MANFRED
IPC: B63H11/12
Filed: 1991-05-06
Abstract: The propulsion system (1) for a ship consists of a pipe installed inside the hull below the waterline. The pipe extends from the bow to the stern and has an inlet at the bow and an outlet at the stern. Two right-angled bends (3, 4) are formed in the pipe near the stern so that the pipe outlet is higher than the pipe inlet. A valve at the pipe inlet is opened to allow water to flow in. Compressed air is injected into the lower end of the vertical part of the pipe. The air mixes with the water and the mixture of air and water then flows upwards through the vertical part of the pipe and out through the outlet, and the reaction force of the outflowing water propels the ship. USE/ADVANTAGE - Ship propulsion method which uses less energy than existing methods.
Patent DE-4116996-A1 (DE)
Title: Manual gear shift assembly for vehicle - has plate spring between gear lever and selection finger
IPC: F16H59/04
Filed: 1991-05-24
Abstract: The switch is for a change speed gear for a vehicle, having a switching shaft mounted in a transmission housing which on one side is connected via a lever with a gear shift and on the other has a switching finger displaceable by the gear shift to effect a gear change. A plate spring (54) with a high spring rate is fitted in the force path between the levr (15) and the finger (16) in a cap (38) axially overhanging the shaft (14). ADVANTAGE - Manual gear change for a vehicle in which the gear selection process is gentler and more comfortable.
Patent DE-4118043-A1 (DE)
Title: Belt grinding machine - has toothed belt drive to one of return pulleys of grinding belt
Inventor: STRASSER KARL-HEINZ
IPC: B24B21/20
Filed: 1991-06-01
Abstract: The belt type grinding machine has a frame (27) with turn round pulleys (21) for the grinding belt (51) mounted at each end. The machine is attached to a machine tool and the machine tool spindle is coupled to the shaft (7) which carries a driving pulley for an endless toothed belt (32). The toothed belt drives a pulley mounted on the same shaft as one of the turn round pulleys (21) for the grinding belt. One or both of the turn round pulley can be positionally adjusted in the axial direction of the grinding belt (51) in order to adjust the tension of the grinding belt. This use of a separate belt to drive the machine enables a more flexible grinding belt to be used which can accommodate itself to the contour of the workpiece being ground. USE/ADVANTAGE - Belt-type grinding machine with a belt which can accommodate itself to the contour of the workpiece.
Patent DE-4118354-A1 (DE)
Title: Flat sheet with high bending resistance - has rows of rectangular areas with convex cross=sections
IPC: E04C2/32
Filed: 1991-06-01
Abstract: The rigidity of a flat sheet (1) of material such as metal, plastics or fibre reinforced plastics, is increased by forming rows of convex rectangular areas. These areas are so shaped that the abutting edges of the  rectangles are curved in the plane perpendicular to the general plane of the sheet. The sheet then has a curved cross-section in both longitudinal and transverse directions. The resistance of the sheet to bending in any direction is thus considerably increased. USE - Light-weight rigid structures.
Patent DE-4119919-A1 (DE)
Title: New n-benzoyl-n'-(pyridin-2-yloxy)-phenyl-urea derivs. - useful as insecticides with good ovicidal and larvicidal properties, and low warm-blooded toxicity
Inventor: DRABEK JOZEF DR
IPC: A01N47/34
Filed: 1991-06-17
Abstract: Substd. N-benzoyl-N'-(pyridin-2-yloxy)-henyl-urea derivs. of formula (I) and their salts are new. In (I) R1 - R or Cl; R2, R3 = H or F. Intermediates of formula (II) are also new. USE/ADVANTAGE - (I) are insecticides with good ovicidal and larvicidal properties esp. useful against, e.g. lepidoptera, Coleoptera, Orthoptena, Anopluria and Thysanria. (I) may be used to treat plants and animals against these insects, as well as octoparasites in domestic animals and pets. (I) have low tocicity to warm-blooded animals. Typical doses in plant protection are 1-1000 (esp. 25-500) g/ha.
Patent DE-4120972-A1 (DE)
Title: Directional control valve for gear pump - which has by=pass channel in valve piston allowing valve stroke to be used independently
Inventor: BRUNNER RUDOLF
IPC: F15B13/04
Filed: 1991-06-25
Abstract: The directional control valve (W) for a hydraulic motor has a connecting passage (D) in a housing (13) and a cross channel (Q) in the valve piston (15) acting as a bypass for the pressure medium. In the neutral position (N) the clear width of the channel is smaller than the clear width of the passage, with a gap provided between the outline contours of the channel and the passage. There may be an additional channel (Z) in the valve piston. USE/ADVANTAGE - For use with a gear pump. At least part of the valve stroke can be used indepedently of the bypass for other control purposes.
Patent DE-4121024-A1 (DE)
Inventor: RUEMMER JUERGEN
IPC: D06N7/00
Filed: 1991-06-26
Abstract: A method is proposed for reprocessing plastic-coated textile materials, in particular plastic-backed textile floor coverings, and for recovery of the textile fibres and plastics contained therein. The method includes the following operational steps:   - cutting up the materials to be reprocessed into small shreds, roughly of the size 5 x 5 to 10 x 10 mm<2>;   - mixing the shreds with water to form a pumpable mass;   - comminuting the shreds in a mill to form a pulp;   - dewatering and drying the pulp; - mechanical separation of the fibres from the resulting plastic granules.   Furthermore, an installation for carrying out the method is described, which is characterised by the following components:   - a shredding device (3) composed of longitudinal cutters and cross cutters (4) for the materials to be reprocessed; - at least one intermediate store (5) for the shreds with downstream metering and transport device (6); - at least one stirred vessel (1) for the production of the shred suspension; - at least one mill (16) for converting the shred suspension into a pulp; - at least one sieving apparatus (24) having a drier (30) arranged downstream; - at least one mechanical separation device (32) for separating the fibres from the resulting plastic granules, the components stirred vessel (7), mill (16) and sieving apparatus (24) being connected together by liquid pipes (13, 21, 9) which can be shut off. <IMAGE>