baber/WOPTO huggingface dataset:
Patent DE-4029374-A1 (DE)
Title: Adsorption immobilised enzymes -  immobilised on particles of unmodified natural substance of cellulose character
Inventor: KERSCHER VOLKER DIPL CHEM DR
IPC: C12N11/12
Filed: 1990-09-15
Abstract: Immobilised enzymes are adsorptively immobilised on enzyme carriers consisting of particles of unmodified natural substance, mainly of a cellulose nature. Pref. the carrier is sawdust, cellulose fibres or cotton lint. The particlesare 0.01-1mm. Enzyme is a hydrolase, isomerase, oxido-reductase or transferase, esp. a lipase (E.C.3.1.1.3), protease (E.C.3.4) or catalase (E.C.1.11.1.6). The immobilised enzymes can be prepd. by allowing the enzyme to be drawn up into the unmodified natural substance particles from aq. medium. The aq. medium contains 1/5 to 1/15 of its wt. of regulating salt, esp. sodium sulphate. USE/ADVANTAGE - The fibres formed from the natural substances are not chemically reactive and need no activation. Immobilised enzymes can be used in organic media for enzyme catalysed reactions and retain their full activity. Immobilised enzymes are esp. suitable for use in enantioselective reesterifications
Patent DE-4030332-A1 (DE)
Title: Process and plant for energy recovery from blast furnace gas - comprises pressure recovery turbine with generator and by=pass with gas compressor, combustion chamber with fuel enrichment
Inventor: PAESSLER KARLHEINZ DR ING
IPC: F27D17/00
Filed: 1990-09-25
Abstract: Process and plant comprises dust filtration, pressure recovery turbine with generator and bypass flow with gas compressor, combustion chamber with fuel enrichment, gas turbine generator and heat exchanger. Pref. blast furnace gas is passed via fine and/or coarse dust filtration (10) and, if necessary, droplet separator (27) to expansion (pressure recovery) turbine (12) coupled with power generator (11) and to gas line (13) for further utilisation. A proportion of gas (3 to15%, pref ca 5%) is bypassed via separator (27) and fine dust filter (28), if required, to compressor (16) and combustion chamber (17) with enrichment (22) by high calorific fuel e.g. natural or coke gas and to gas turbine (18). The gas turbine (18) may be coupled to its own generator (19) or to the expansion turbine generator (11) via clutch (26). Gas turbine (18) exhaust passes through heat exchanger  (24) to raise the inlet gas temp. for expansion turbine (12). Two system variants are also covered. USE/ADVANTAGE - Energy recovery by conversion of pressure and thermal energy from blast furnace gas to electrical energy. High energy recovery, favourable investment payback, no adverse effect on furnace pressure regulation.
Patent DE-4030683-A1 (DE)
Title: Continuous strip-casting plant for steel -  esp. for cold strip starting material with casting mould formed from non-rigid tensioned shells
Inventor: SCHULZE HORN HANNES DR
IPC: B22D11/04
Filed: 1990-09-28
Abstract: Continuous stripcasting plant for steel, esp. for cold strip starting material under 30 mm thick, with casting mould formed from at least partially non-rigid tensioned shells cooled from the rear and having near-parabolic cavity profile with steel distribution area above the parallel casting aperture. The non-rigid mould shell sections are vibratory and have separate actuators for vibration, tensioning and form holding. USE/ADVANTAGE - Provides improved plant for casting steel strip with tolerances suitable for direct processing for cold strip, esp. in thickness range below ca. 12 mm.
Patent DE-4034645-A1 (DE)
Title: Guanidinium-5,5'-azo-tetrazolate - is stable nitrogen-rich cpd. yielding non-harmful gases upon decomposition
Inventor: BUCERIUS KLAUS MARTIN DIPL CHE
IPC: C07D257/06
Filed: 1990-10-31
Abstract: Guanidinium-5,5' -azotetrazolate C4H12N16 (I) is proposed as a stable, nitrogen-rich organic cpd.. (I) is prepd. by oxidn. of 5-aminotetrazole to Na-5,5'-azotetrazolate pentahydrate (II) and reacting the (II) in aq. soln. with guanidinium chloride. USE/ADVANTAGE - (I) is a stable cpd. which is insoluble in most solvents except for MeOH, DMF and DMSO, only slightly soluble in water, with good thermal stability and a m.pt. of 238-239 deg. C. Upon decomposition, gases are produced which are non-harmful to human beings, so that the (I) is useful in technical applications requiring prodn. of inert gases
Patent DE-4041895-A1 (DE)
Title: Deflection coil yoke arrangement for television or VDU picture tube - has subcoil attached to flange of main deflection coil former and made of two-part core
Inventor: NAKAZAWA MAKOTO
IPC: H01J29/76
Filed: 1990-12-27
Abstract: The deflection-coil yoke arrangement has a coil former (2) mounted onto the neck (8A) of a picture tube (8).  Horizontal and vertical defleciton coils (4,5) are mounted on the coil former between its two end flanges  (2A,2B). A damping sub-coil (6) is mounted on one flange and connected between the vertical deflection coil and its associated defleciton circuit. The sub-coil (6) consists of two separatable parts (21,22) forming a closed magnetic core (20). A first coil (23) is wound on one part (21). A second coil (24) is wound on the second part (22) so as to act against the magnetic field generated by the first coil. The core parts are held together by clips that engage slits (21D,21E, etc) in their facing ends (21A etc). ADVANTAGE - Simpler winding if sub-coil onto its core.
Patent DE-4100403-A1 (DE)
Title: Key tag structure - comprises heavy ball with offset slot for shifting centre of gravity to one side
Inventor: KAESBERGER FRANZ
IPC: E05B11/00
Filed: 1991-01-09
Abstract: The key-tag comprises a ball (2) of heavy material such as metal or special plastic. This contains a slot (4), which can be offset so as to shift the centre of gravity to one side. Alternatively, this can be done by using materials of different specific gravities, or which contain internal chambers (9). A drilling (6) at right angles to the slot accomodates a steel or plastic suspension ring (3, 10), preventing the ball dropping off the key grip (7). Alternatively this can be done by protruding components (5) inserted in the slot. ADVANTAGE - Prevents key falling out of keyhole.
Patent DE-4111383-A1 (DE)
Title: Semiconductor element - has multiple segment contact fingers coupled to ballast resistor
Inventor: ROGGWILLER PETER DR
IPC: H01L23/482
Filed: 1991-04-09
Abstract: Between the anode and cathode of a semiconductor substrate (15) are formed a p-E-emitter layer (1), an n-base (2), p-base (3) and multiple cathode fingers (5.1-5.4) with n-emitter  layers (4.1-4.4). The cathode fingers are typically a few millimeters long and a few tens of millimeters wide. On each finger surface is formed a segment of metal (7.1 to 7.4). The electrically isoalted segments provide points of individual connection to the resistive layer (11) of a ballast resistor.  The device forms a GTO thyristor. USE/ADVANTAGE - Inhibits unwanted current concentration using ballast resistor. GTO thyristor device.
Patent DE-4115329-A1 (DE)
Title: Inertial sensor for motor vehicle safety appts. - has resistive tracks coupled to diagnostic circuit to control trigger of external device e.g. inflatable cushion
Inventor: RUSSELL RICHARD J
IPC: G01P21/00
Filed: 1991-05-10
Abstract: An inertial sensor, e.g. a Rolamit sensor, has a roller (24) that ties on a curved surface with a strip contact layer (44) of a flexible material, such as a beryllium-nickel alloy. The strip is fixed in position by welds it either end (48, 56). In the nomial position the roller ties against a stop (2). A contact strip (96) projects through a slot in the base. When the retardation of the vehicle is sufficient the roller moves along the surface to engage the strip and complete a circuit to cause the triggering of air-bag inflation. USE - Resistive element senses movement of roller.
Patent DE-4116345-A1 (DE)
Title: Early detection of damage in rotary machine - using single acoustic pick=up to measure structure-borne sound parameters in high and low frequency bands for calculation of coherence function
Inventor: VYKOUPIL PETER DIPL ING
IPC: G01H1/14
Filed: 1991-05-18
Abstract: The method involves measuring a structure-borne sound parameter in the high frequency region and a second in the low frequency region of the spectrum. Both measurement values are fed to a frequency analyser which derives auto power (G11 to G22) and cross power (G12) spectra values which are fed to a computer which derives a coherence function as G12 squared/G11G22. Both structure-borne sound parameters are measured using a single acoustic transducer and are sepd. in the filter, forming the two measurement values for the frequency analyser. USE/ADVANTAGE - Esp. for use with machine with rotating part. Simplified appts. and method.
Patent DE-4116627-A1 (DE)
Title: Automatic pressure control for ball lead-screw - has two ball-screw nuts separated by fluid pressure-controlled flexible spacer
Inventor: NISHII KOJI
IPC: B23Q5/56
Filed: 1991-05-22
Abstract: The assembly has a lead-screw (11) such that the grooves of the thread provide a location for balls (13). The balls are retained in position by a pair of nuts (12,12a) that are sepd. by an elastic spacer (14). The clearance between the balls and the lead-screw is regulated by fluid pressure applied to the flexible element. During acceleration and deceleration phases the pressure is increased and during constant speed phases is reduced to obtain low frictional forces leading to extended life. ADVANTAGE - Controls friction force and heat generated.
Patent DE-4116983-A1 (DE)
Title: Electric fuse for vehicle current cable - has elongate housing enclosing terminal clamps fitted to opposite ends of current cable
Inventor: KERRES JAKOB
IPC: H01H85/20
Filed: 1991-05-24
Abstract: The fuse has a breaker (2) responding to an excessive current, with a terminal clamp (3) at either end, secured to the stripped ends (5) of the current cable (7) and an intermediate section (19) which melts when a given current loading is exceeded. The ends of the current cable (7) are received by respective end of an elongate insulating fuse housing (1) fitting around the terminal clamps (3), with internal stops (16) for limiting the longitudinal movement of the latter. ADVANTAGE - Resistant to applied tension of up to 500N.
Patent DE-4117353-A1 (DE)
Title: Cardboard blank for making carton - incorporates hinged flap to close the access opening
IPC: B65D5/74
Filed: 1991-05-28
Abstract: The rectangular carton is made from a single blank cut from a sheet of plain cardboard or of corrugated cardboard.  The blank has a number of transverse fold lines (18) which form the front panel (2) the base (4) the rear panel (3) and the top panel (6). Longitudinal fold lines (19) form the side panels (5,7) attached to the rear panel (3).  These side panels (5,7) overlap flaps (21) attached to the front panel (2).  Part of the front panel (2) is cut away along a curved line (14) to form a tongue (13) and panel (10) with a fold line (11).  The material (17) cut away from the front panel (2) is glued to the top panel (6) to form an access opening which can be closed by the panel (10) and tongue (13). USE - Cardboard cartons.
Patent DE-4120432-A1 (DE)
Inventor: KLAUCK WOLFGANG DR
IPC: C08G18/32
Filed: 1991-06-20
Abstract: Described is the use of dihydroxy fatty acids and/or dihydroxy polymers of fatty acids as a compound carrying an ionizable group and reactive towards isocyanates in the production of polyurethanes incorporating carboxy groups. The dihydroxy fatty acids can be obtained from naturally occuring raw materials and do not have the disadvantages of the hydroxycarboxylic acids used in the prior art. Their use also enables the properties of the polyurethane produced from them to be improved.
Patent DE-4121326-A1 (DE)
Title: Optical measurement of distances to points on surface - involving orthogonal movements of measuring unit and rotation of object to achieve normal incidence of beam
IPC: G01B11/24
Filed: 1991-06-27
Abstract: The method involves making measurements with a laser beam (5) from a measuring unit (4) movable on transverse and vertical guides (17,18), to points (2) on a surface (3) of an object (1) on a rotary horizontal plate (40). The beam is reflected (16) to a sensitive region (15) on the measuring unit which produces a signal when the incident beam is nearly at right angles to the surface. Pref. about 200 measurements at each point are processed and selected for arithmetic averaging. USE/ADVANTAGE - On workpiece or object for machining operations. Distances can be measured with max. precision at min. cost.
Patent DE-4121609-A1 (DE)
Title: Disassembly equipment for combustible cartridge cases - having blade to separate casing cover from casing and held in displaceable guide
Inventor: ORTMANN HELMUT DIPL ING
IPC: B23D21/00
Filed: 1991-06-29
Abstract: The propellant charge case (12) has a casing (14) and a casing cover (15) attached to the projectile (11). It includes a blade (21) used to separate the casing cover from the casing. The blade is held in a holding and guiding device (22) and is longitudinally displaceable towards the rotating casing. USE/ADVANTAGE - The equipment is used for disassembling cartridges with combustible cases, esp. for conversion of live tank munition into training munition. It allows opening of the propellant charge case without material losses, so that the case can be re-assembled without dimensional changes and the propellant powder is not contaminated by turnings.
Patent DE-4127439-A1 (DE)
Title: Dual mass flywheel for IC engine - has the two masses connected by springs to form torsional oscillation absorber
Inventor: TWISSELMANN MARK
IPC: F16F15/131
Filed: 1991-08-21
Abstract: The dual mass flywheel is used with an IC engine, and consists of a primary mass (1) and a secondary mass (4). The primary mass (1) is formed by two discs which are mounted on opposite sides of a middle disc (5) which holds the secondary mass. The two masses (1) and (4) are connected by springs which permit limited relative rotation between the two masses. A damping device is installed between the two masses (1, 4). The secondary mass forms part of a friction clutch. The two masses (1, 4) are connected radially and axially to each other by rolling bearings (10) and the inner bearing is fitted with a sealing ring. A thermal insulation ring (14) is fitted between the secondary mass and the bearing (10) and extends radially over the bearing outer race (10), and forms a sealing ring between the two masses (1, 4). USE/ADVANTAGE - Flywheel incorporating a torsional oscillation absorber.
Patent DE-4128298-A1 (DE)
Title: Set of hexagonal coloured dominoes - consists of 7,19,37,61 or 91 pieces with black background on which are multicoloured dots, and sound-emitting pieces.
Inventor: PFRETZSCHNER SIEGFRIED
IPC: A63F9/20
Filed: 1991-08-27
Abstract: The set of hexagonal coloured dominoes is made preferably of plastics, and in all colours of the spectrum, preferably on a black background. The colours are in the form of dots all in different sequences. The game is in five sizes, consisting of 7,19,37,61 or 91 pieces. The outer edges of each domino are notched to be easily recognisable by the visually handicapped. Under the coloured dots are pieces in the form of metal tabs, strings or bubbles emitting a sound when pressed. USE/ADVANTAGE - The game of dominoes is for people of all ages and types of vision.
Patent DE-4134347-A1 (DE)
Title: Ethylene]-graft copolymers with improved adhesion and high toughness - comprise minor amt. of norbornene, stearyl-maleimide, aconitic acid, or vinyl ester grafted onto copolymer of ethylene@] with selected monomers
Inventor: HOBES JOHN DIPL CHEM DR
IPC: C08F255/02
Filed: 1991-10-17
Abstract: Copolymers (I) comprise (A) base polymer consisting of (A1) 90-50 pts. (all pts. wt.) ethylene (A2) 10-50 pts. (1-4 C alkyl) acrylate, 3-8 C alpha-olefin, 4-8 C diolefin, (4-8 C alkyl) vinyl ether, styrene, acrylamide, acrylonitrile, or vinyl acetate; and (B) 0.2-5 pts., per 100 pts. (A), norbornene, stearyl-maleimide, aconitic acid (II), vinyl benzoate, or vinyl ester of formula (1) R1R2R3C-CO-O-CH=CH2 (where R1 is Me; and R2, R3 are 1-10C aliphatic gp). as graft monomer. Prepn. of (I) is by mixing (A), (B), and radical-forming catalyst (III) and reacting at 180-260 deg. C and 0.05-2.0 MPa. Pref., (A) consists of 85-60, (esp. 80-65) pts. (A1) and 15-40 (esp. 20-35) pts. (A2). (A2) is Me or Et acrylate, partic. tert. Bu acrylate, and esp. n-Bu acrylate or vinyl acetate. (B) is norbornene, vinyl ester of formula (1), and partic. (II). (I) has peel strength (test described) 5-30 N, impact toughness 1500-3000 mJ/sq.mm, and melt flow index (190 deg. C/2.16) 0.1-10 g/10 minutes. During prepn., (A), (B), and (II) are heated at 190-250, (esp. 200-240), deg.C. (III) is pref. organic peroxide, partic. 1,1-bis(tert.butylperoxy)cyclohexane, tert.butyl cumyl peroxide, 2,5-dimethylhex-3-yne 2,5-di-tert.butyl peroxide, and esp. 2,5-dimethyl-2,5-di (tert.butylperoxy)hexane (IV). 0.01-0.2 Pt. (III) is used per 100 pts. (A), (B) and (III), dissolved in a solvent, are added to (A), mixed, solvent is removed, and components are reacted at raised temp. and opt. under raised pressure. USE/ADVANTAGE - Useful adhesive, adhesion promoter, additive for coextrusion, cable jacketing, and film material (claimed). (I) have very good adhesion properties and high toughness, partic. impact toughness.
Patent DE-4203290-A1 (DE)
Title: Conveyor for can bodies in furnaces and drying installations - has cover rails protecting spaced conveyor belts from  direct heat convection
Inventor: BARTH STEFAN
IPC: B65G21/20
Filed: 1992-01-31
Abstract: The conveyor belts (17,18) are guided either side of a magnetic rail system (8) between the drive and tensioning pulleys in conveyor belt guide beds (1,2) with cover rails (3,4), both set back from the conveyor belt edges (5,6) moving the can bodies (14) and accompanied by cooling systems (7,21).The cooling systems run in profiled supports (9,10) which support the guide beds (1,2) and the cover rails (3,4). Screen plates (23) can be fixed at a distance on the cover ails (3,4).The dryer takes up the stream of can bodies with the longitudinal welding seam facing upward or down as they emerge from the body painting device and/or powder applicator behind the automatic welding machine. USE/ADVANTAGE - For can mfr.,with increased can protection against direct heat.
Patent DE-4209056-A1 (DE)
Title: Physical-chemical waste water purificn. - in which part of the waste flow is subjected to electron irradiation with gas stream contg. ozone
Inventor: WAESCHER THOMAS
IPC: C02F1/30
Filed: 1992-03-20
Abstract: For waste liq. purificn. in a physical-chemical action, using electron irradiation, at least a partial waste flow together with a gas stream contg. oxygen is exposed to electron irradiation. After irradiation, the gas stream contg. ozone is stirred within the waste to be treated. Pref. the waste to be cleaned is mixed intensively during irradiation. The recirculating gas stream contains 0.1-10.0 g ozone/litre3 and pref. 0.1-1.0 g ozone/litre 3. The gas contg. ozone is applied to the waste, in a counter stream, in a second stage in a vessel (7), to pass through the waste during irradiation, pref. together with an intensive waste mixing action. In the gas flow circuit, the gas is cleaned of any carried particles after passing through the waste. USE/ADVANTAGE - The technique is for initial cleaning of waste from industry, or seepage water from rubbish dumps, before biological purificn. The system gives an economic method for treating waste with ozone and direct waste radiation.
Patent DE-4215402-A1 (DE)
Title: Hydraulic damper with double-acting piston - has piston rod passing through loose membrane sealed to it and forming end wall of pot
Inventor: PETERSEN CHRISTIAN PROF DR ING
IPC: F16F15/023
Filed: 1992-05-11
Abstract: The pot (2) containing the piston is filled with hydraulic fluid. The piston rod (5) passes only through one end wall of the pot to the outside, this wall consisting of a loose sealing membrane (7) enclosing and fixed to the rod. The piston can consist of a perforated disc (6) leaving only a narrow peripheral gap (18) between its outer edge and the inside wall (40) of the pot. There can also be a baffle disc (19) at one or both sides of the piston and clear of it. This has an opening (21) for the contact-free passage of the rod through it. ADVANTAGE - Reacts to very slight vibration, being particularly for the vertical oscillation of a footbridge.
Patent DE-4222767-A1 (DE)
Title: Practice appliance for tennis player - has ball attached to end of guide arm and has baseplate and returns ball after hitting to player
Inventor: BIBER HERBERT
IPC: A63B69/00
Filed: 1992-07-10
Abstract: The spherical ball (1) consists of two spherical segment shaped elements mounted on the end of a guide arm (2) on a horizontal axis (7) of symmetry. The guide arm is held by at least one sprung arm (3) the bottom end (4) of which is movably held on a horizontal axle (5) the ends of which are movably attached by two bearing points to a baseplate (9). The sprung and guide arms are made of a single elastic element of sprung steel and/or fibre reinforced plastics. The top ends of two cantilevered arms (10a,10b), fixed to the ends of the axle parallel to the end of the sprung arm, support two deflector rollers (12a,12b). Two cables (11a,11b) run over the rollers, joining the sprung arm and guide arm. USE/ADVANTAGE - The compact tennis practice appliance has an attached, kinematically realistic ball enabling the player to move between shots.
Patent DE-4223710-A1 (DE)
Title: Telephone wall mounting - holds telephone securely with hook on wall mounted plate engaging with telephone
Inventor: TOEPRITZ HARTMUT DIPL ING
IPC: H04M1/11
Filed: 1992-07-18
Abstract: The mounting has a metal or plastic plate (23) which is fastened to a wall (46). This has a flexible tongue (15) with a locking element (16) and a holder (19) for the telephone. The locking element forms a fast connection with a locking element in a telephone after the holder has been pushed into the telephone. The holder comprises at least one hook (19,20) formed on the side of the plate distal from the wall. The plate may be attached to the wall by, e.g., screws (45) or adhesive. USE/ADVANTAGE - Simple device suitable for small telephones. Holder is smaller than telephone and so is not visible itself. Can be used to securely wall-mount table telephone without need for screws.
Patent DE-4224437-A1 (DE)
Title: Heat transference in thermal solar system - involves circuit in which heat exchanger acts as condenser and collector as vaporiser
Inventor: GOETZ ANDREAS
IPC: F24S10/95
Filed: 1992-07-24
Abstract: The process of heat transference is used in a thermal solar system. It uses a circuit in which a heat exchanger acts as a condenser, and the solar collector as a vaporiser. In the absence of a temp. difference control, a liquid level switch, connected to the collector by a pipe, works in association with a condensation pump to produce a suitable quantity of self regulated vaporised liquid. Alternatively, in the absence of a control and pump, a capillary tube leading from directly behind the condenser outlet to the collector produces a suitable quantity of self-regulated vaporised liquid. USE/ADVANTAGE - Flow from the heat exchanger is kept constantly directly proportional to the capacity of the collector.
Patent DE-4225660-A1 (DE)
Title: Single member drive for vertical blind - is rotatably coupled to epicyclic gear train sun wheel, and to torque transmitting coupling
Inventor: BENTHIN SIEGFRIED
IPC: E06B9/322
Filed: 1992-08-04
Abstract: The drive member is rotatably coupled to an epicyclic gear train sun wheel (3) and by torque transmitting coupling to the splined shaft. The coupling blocks in both directions after a preset number of revolutions. The gear train outer ring (4) has torque transmitting link to the drive wheel for the full string. The coupling between the centre wheel (3) of the planet gear and the splined shaft (10) is formed by a toothed collar (8) on the wheel and a toothed section (9) on outside of the shaft. ADVANTAGE - Compact design with small number of components.