baber/WOPTO huggingface dataset:
Patent DE-3915173-A1 (DE)
Title: Child's safety seat with passive restraining system
Inventor: POTT EKKEHARD
IPC: B60N2/28
Filed: 1989-05-10
Abstract: Despite continuous improvement in children's seats, the risk of children being injured in car accidents is still very high. Frequently, in rear-end collisions the spinal column is detrimentally affected in the region of the cervical vertebra; this can then result in a broken neck or paralysis from the waist down. The subject matter of the invention is therefore a child's safety seat with passive restraining system by means of which the risk of damage to the spinal column is reduced in that the restraining system protects against health-endangering relative movements after the head and upper body of the child have been released. According to the invention, this is achieved by folding up the play table which is designed as an energy absorber. By suitably shaping the play table, unacceptably large head-bend angles to the front and to the rear are prevented. User comfort and a high degree of user acceptance are ensured by the removable design of the play table; a quick unlocking mechanism ensures easy release after the accident. The seat is designed without a belt securing the child; however, the seat frame has devices for receiving a series-produced three-point automatic car belt. The invention is intended to be produced in series as early as possible.
Patent DE-3915571-A1 (DE)
Title: Multilayer bag - made of paper and plastic separated by gas-and aroma-tight plastic foil
Inventor: LOBENWEIN HUGO DR
IPC: B65D30/08
Filed: 1989-05-12
Abstract: A multi-layer bag (2) with a cross-over bottom is made of an outer bag (4) of three layers of Kraft paper and a inner bag (6) of a HDPE foil, 60 mu thick.  A barier layer (12) of gas- and tight plastic separates the two.  This layer  (12) consists of PP, 34 mu thick, lined on both sides by PVDC. ADVANTAGE - This is distinguished from other bags by being gas- and aroma-tight.
Patent DE-3915880-A1 (DE)
Title: Multi-wired cables monitor esp. for communications cables - measures charging time of capacitor in bridge measuring loop and/or insulation resistance of connected wires
Inventor: STAROSTA MARIAN
IPC: G01R17/10
Filed: 1989-05-16
Abstract: Two measurement wires (11,12) are connected to form a measurement loop and have an associated insulation measurement wire or screen (13). The loop resistance and/or insulation resistance is/are measured by a measurement bridge. At least one charging capacitor (C8) is connected in a complex bridge arm opposite the arm contg. the test resistance.  A comparator (JC3,JC4) in the bridge diagonal switches over when the capacitor voltage equals the measurement voltage.  The analyser, esp. a microcomputer, measures the charging time and derives the test resistance. USE/ADVANTAGE - For rapid, reliable and economical monitoring, esp. of multicore communications cables.
Patent DE-3917596-A1 (DE)
Title: Forming stable oxide intermediate layer on titanium - to be coated with ceramic by heating with slip contg. antimony oxide
IPC: C23D3/00
Filed: 1989-05-26
Abstract: Ti workpiece surfaces to be ceramic coated are prevented with an antimony oxide-contg. skip and heated to 500-750 deg. C in an oxidising atmos. to produce an antimony-contg.  mixed oxide layer. The antimony oxide-contg. slip forms a paste or lacquer with water, alcohol, other low boiling point liquids or with organic liquids which are burnt off without residue at below 600 deg.C. USE/ADVANTAGE - In the enamelling of Ti surfaces. Process produces a durable, stable oxide intermediate layer which guarantees good bonding with the ceramic layer.
Patent DE-3923140-A1 (DE)
Title: Overhead projector with LCD plates - has fresnel lens plate in hinged frame enabling projection of LCD images  and computer generated text
Inventor: REIBL MICHAEL
IPC: G03B21/132
Filed: 1989-07-13
Abstract: A reflection overhead projector has a light source, projection lens and deflection mirror, a liquid crystal display or LCD in the image window plane above a plane mirror and a computer interface. The LCD has upper and lower LCD plates below a Fresnel lens plate in a common hinged frame (34). With the frame hinged inwards the upper LCD plate forms a controllable projection pattern and the lower plate is transparent. With the frame out the lower plate forms a matt plate back illuminate to show the text etc. on the upper plate. USE/ADVANTAGE - For projecting liquid crystal images and computer generated text.
Patent DE-3929495-A1 (DE)
Title: Thermal print head - has element formed by wire coil loops on ceramic carrier block
Inventor: GEVATTER HANS-JUERGEN PROF DR
IPC: B41J2/335
Filed: 1989-09-01
Abstract: The thermal printing process uses a printing head (1) that has a carrier (2) that is of a ceramic or epoxy resin and has a rectangular cross section. Located on the carrier are a number of electrodes (4) in the form of wire windings (5). The wires are coated with an insulating lacquer to prevent short circuiting. Contact blades (7) are fixed to each of the wires.  External connections are made by contact couplings (9) that engage with the blades. The leading corners of the coils are in contact with the paper (12), which is fed around the print feed roller. ADVANTAGE - Provides high print density resolution.
Patent DE-3931484-A1 (DE)
Title: Reluctance motor with magnetic pole rotor - has alternating layers of magnetisable and non-magnetisable material
Inventor: GEKELER MANFRED DR ING
IPC: H02K19/10
Filed: 1989-09-21
Abstract: The rotor (1) has at least one pair of magnetic poles (P,P'), exhibiting a layer structure transverse to the radial plane of the rotor with layers (3,4) of a magnetisable and a non-magnetisable material in alternation between two opposing poles (P,P'). The stator has a series of stator windings (Wa,Wb,Wc) corresponding to the stator of a three-phase motor for providing a magnetic field enclosing the rotor. Pref. the magnetisable layers (3) are made of a foil or sheet material, or by adjacent wire sections, the alternating non-magnetisable layers (4) pref. comprising a partially electrically conductive material, e.g. Al. ADVANTAGE - Provides max. output torque.
Patent DE-3938636-A1 (DE)
Title: IR image converter - has carrier plate with luminescent coating to convert IR into proportional visible light
Inventor: HOESS PAUL
IPC: G02F2/02
Filed: 1989-11-21
Abstract: The image converter, as a resolution unit to convert infra-red into visible light for video and still cameras using available light, has a light-permeable carrier plate (2). A homogenous layer (3) of luminescent material, with a small grain size, is applied to the plate so that, when subjected to infra-red, it emits proportional visible light. The luminescent material brings images into the visible spectrum through a multi-photon process exclusively triggered by infra-red, using a photo luminescent compound where electrons are energised by visible or ultra-violet light to be stored temporarily in a metastable condition, to emit visible light when subjected to infra-red. The carrier plate (2) is pref. of a fibre optic material. A permeable cover plate (4) allows infra-red and energising rays to pass through. The assembly can be connected to an image amplifier. ADVANTAGE - The system can be coupled easily to an appts., and requires no cooling in use.
Patent DE-3938889-A1 (DE)
Inventor: DONNERHACK ANDREAS DR
IPC: A61G10/02
Filed: 1989-11-24
Abstract: Cryotherapy and thermotherapy as therapeutic procedures are carried out in treatment chambers. For certain indications, an increased oxygen level in the gas inhaled by the patient is of advantage. An oxygen enrichment of the atmosphere in the treatment chamber is questionable for reasons of safety. However, in order to be able to provide the patient with an oxygen-enriched inhalation gas, a gas supply device is provided outside the treatment chamber (1). A line leads from the gas supply device to a delivery point in the chamber, from which the patient can take the inhalation gas through a mouthpiece (11) or a face mask. A trigger device in the chamber allows the patient to control the supply of the treatment gas. This preferably takes place pneumatically by means of the partial vacuum occurring when the patient inhales. 
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Patent DE-3941599-A1 (DE)
Title: Removal of slag from metal transporter band - passing band through abrasive ferromagnetic powder via magnetic gates
Inventor: PHILIPP KLEMENS DIPL ING
IPC: B21B45/04
Filed: 1989-12-13
Abstract: The metal band (5) is fed vertically through the cleaning equipment, with a lower set of magnetic gates (8) associated with the magnetic field of an electromagnet (9) to prevent the magnetic powder from falling out of the bottom of the machine. The underside of the gates is protected by hinge mounted scrapers to form ducts each side of the band. When the band is stopped the hinge mounted scrapers are brought into contact with the band. This prevents any powder etc. from falling out of the machine. All the powder and slag residues are collected and passed to a separater (1) to allow the powder to be recycled. ADVANTAGE - No soiling through split powder, efficient cleaning process.
Patent DE-4003216-A1 (DE)
Title: Pulse recognition circuit for thyristor emergency ignition arrangement - derives usable firing signal from protracted discharge of capacitor through input impedance of Schmitt trigger circuit
Inventor: KIRCHNER HANS-JOACHIM
IPC: H02H3/04
Filed: 1990-01-31
Abstract: The thyristor (1) is associated with an RC time-constant circuit and an emergency ignition device (2) wired to a current -transformer (T1) for galvanic isolation from succeeding pulse recognition and control stages (II,III). The sec. current amplitude (12) is reduced so that reaction from the sec. voltage on the prim. is held low.  A small capacitor (C1) of e.g. 2200 pF is charged via a fast signal diode (V2) and discharged exclusively through the control input resistance (Re). USE/ADVANTAGE - E.g. with DC regulators. Very short pulses are more easily recognised and applied with little delay to reactive controller.
Patent DE-4008109-A1 (DE)
Title: High purity glass article mfr.
Inventor: CLASEN ROLF DIPL PHYS DR
IPC: C03B8/00
Filed: 1990-03-14
Abstract: A glass article is mfd. by sintering a porous green body produced by electrophoretic deposition from an aq. suspension onto a porous membrane located between an anode and a cathode, the space between the membrane and the anode being filled with electrically conductive liq. In one form, a porous auxiliary membrane, of pore dia. less than the average particle dia. of the solids in the  suspension, is located between and spaced from the deposition membrane and the cathode, the space between the auxiliary membrane and the cathode being filled with electrically conductive liq. In a second form, the electrodes are arranged relative to the suspension such that the direction of motion of thee suspended particles runs parallel to the gravitation field acting on the particles. Also claimed is appts. for carrying out the process.
Patent DE-4020075-A1 (DE)
Title: Pivot drive using asynchronous electric motor - has double worm gear as motion converter between electric motor and pivot element
Inventor: STEINEGGER IGNAZ DIPL ING
IPC: H02K7/116
Filed: 1990-06-23
Abstract: The drive uses an asynchronous electric motor (2) coupled to a motion converter (4), with a clutch (6) between the latter and the driven pivot element. The synchronous electric motor (2) has electric motor braking, the motion converter (4) comprising a double worm gear between the output shaft (3) of the electric motor (2) and the drive shaft (5) for the accelerated mass of the pivot element, lying at right angles to one another. Pref. the electric motor (2) has a short axial length relative to its dia. USE - For pivoted barrier for car park etc.
Patent DE-4020852-A1 (DE)
Title: Optical fibre with two layer protective sheath - comprises first protective sheath and outer sheath of crosslinked polyolefin
Inventor: LENGE NORBERT DR RER NAT
IPC: G02B6/44
Filed: 1990-06-29
Abstract: Solid light wave conducting optical strands consist of a light conductive optical fibre comprising a core and sheath encased in a first protective sheath and an outer casing of crosslinked polyolefin attached directly to the first protective sheath without an interspace between them. Pref. the outer polyolefin sheath is applied directly over the first protective sheath by extrusion so as to leave no gap between them, then the polyolefin is crosslinked after extrusion. Crosslinking may be accomplished e.g. by irradiating the sheath with electrons whose kinetic energy is exhausted within the wall thickness of the sec. coating; by mixing the polyolefin with a peroxide which after extrusion decomposes at high temps. e.g,. 180 deg C, and initiates cross linking. USE/ADVANTAGE - The optical fibres with crosslinked polyolefin outer sheath have good mechanical strength and handling properties, the outer sheath has good adhesion to the first protective sheath, the insulation can be removed easily e.g. for inserting the optical fibre into an optical plug without damaging the protective sheath, and the optical fibres can be used long term at temps. above 100 deg C without occurrence of stress cracking.
Patent DE-4021556-A1 (DE)
Title: Concn. measuring arrangement for gaseous and/or vapour components - uses substance causing colour reaction in test tube, opto-electronic and/or visual detection
Inventor: MENTRUP CAROLA
IPC: G01N21/77
Filed: 1990-07-06
Abstract: An arrangement for measuring the concn. of gaseous and vapour components of a gas mixt., using optically detectable reaction zones in test tubes, contains shaped channels on a carrier with a cover plate. The channels contain a substance causing a colour reaction with a fluid. Variations in the reaction zone can be directly observed and/or detected optoelectronically. The cover plate is at least partially in the form of an optical filter element (3). USE/ADVANTAGE - Simplifies opto-electronic evaluation. Enables selective evaluation using wavelength matching detection substance.
Patent DE-4021958-A1 (DE)
Title: Elastically deflectable paving block - provides warning to poorly sighted persons of possible hazards
IPC: E01F9/053
Filed: 1990-07-10
Abstract: The paved floor has one or more paving blocks (1) supported on an elastic base (2), so that a person walking over the floor is made aware of his or her position by the deflection of the paving block when walking on it. The elastic base is enclosed in a weather-proof housing (3). THe elastically deflectable paving block provides a warning to blind or poorly sighted persons that they are approaching a hazard such as the edge of a pavement or a staircase or the edge of the platform of a railway station. USE/ADVANTAGE - Elastically deflectable paving block for warning blind or partially-sighted persons of hazards.
Patent DE-4023694-A1 (DE)
Title: Plate heat exchanger system - comprises collection of plates forming packet with intervening joints and pressure plates
Inventor: FUNKE KARL-HEINZ
IPC: F28D9/00
Filed: 1990-07-26
Abstract: The plates have throughflow apertures through which successively heat-emitting and heat-absorbing media pass. Between the heat transfer plates are fitted turbulence plates. The packet of plates (4) has heat transfer plates (10) on one or both sides of which turbulence plates (12,14,18) are soldered. Where heat transfer plates with turbulence plates (18) soldered on one side are used, the plate packet only consists of such transfer plates, but with the use of heat transfer plates with turbulence plates (12,14) soldered on both sides, alternating heat transfer plates with turbulence plates soldered on both sides and heat transfer plate without soldered turbulence plates form the assembly. USE/ADVANTAGE - As a heat exchanger with which a better heat transfer from the turbulence plates to the heat transfer plates is achievable.
Patent DE-4033658-A1 (DE)
Title: Processing trench edges in semiconductor substrates - using stream of particles, for simple, accurate silicon@ solar cell mfr.
Inventor: STEIN KARL-ULRICH DR ING
IPC: H01L21/311
Filed: 1990-10-23
Abstract: Processing an upper edge section of trenches etched in semiconductor substrates with a stream of particles comprises directing an anisotropic stream of particles at a selected angle of incidence W on to the substrate surface so that the lower edge of the trench, which is not to be processed, is shielded by the opposite edge of the substrate surface. USE/ADVANTAGE - The method is simple, accurate, and can be used instead of high-output solar cells made from crystalline Si. The method is simple, accurate and can be used instead of costly lithographic techniques. It can be used for any shape of trench.
Patent DE-4114601-A1 (DE)
Title: Sewerage pipe inspection appts. -  has inspection units movable in pipe and radio link for control and evaluation
Inventor: KELLER GUENTER
IPC: F16L55/26
Filed: 1991-05-04
Abstract: An inspection unit (2) is moved along inside the sewage pipes (9) and is connected to a control and evaluation unit (1) at least partially without wires using antennas (4a, 4b). Data are transferred to and from the inspection unit in the sewage system via a shaft transmitter (3) which forms the link to the control and evaluation unit via antennaes. The transmitter can be mounted in a manhole cover. ADVANTAGE - Enables efficient and effective inspection of sewage pipes for damage.
Patent DE-4115359-A1 (DE)
Title: Defrosting control for refrigerator with door esp. for recirculated air unit - having activatable refrigerant circulation circuit contg. evaporator coverable with hoar frost as well as defrosting unit switched off after defrosting
Inventor: DUNGLER HANS DIPL ING
IPC: F25D21/00
Filed: 1991-05-10
Abstract: The defrosting unit is switched on again after a period of subsequent build up of hoar frost on the evaporator. This period of hoar frost build up is controlled depending on the duration of the active refrigerant cycle and also on the opening of the door (4.1). The build up of frost is controlled to shorter time periods, with an increasing number or duration of the refrigerator door openings. The frost build up duration is determined by a specified max. frost build up limit time value from which is substrated, during the active refrigeration cycle, an evaluated time value per door opening and/or per door opening duration, or a differently evaluated time. With the reaching or undershooting the zero value, the defrosting unit is switched on. ADVANTAGE - Defrosting cycle is dependent on operating conditions.
Patent DE-4120072-A1 (DE)
Title: Shock wave generators with fluid-filled coupling chamber - uses fluid flow to divert gas bubbles from surface of pressure sensor
Inventor: BOURLION MAURICE
IPC: A61B17/22
Filed: 1991-06-18
Abstract: The fluid-filled coupling chamber (12) has a fluid flow (22) fed to the coupling chamber (12) using a jet (24) directed so that it diverts generated gas bubbles (40) within the coupling fluid (13) from the shock wave path between a shock wave generation point (F1) and a pressure sensor (18). Pref. the fluid flow (22) is provided adjacent the shock wave generation point (F1) and has a flat flow characteristic extending across the full surface of the pressure sensor (18). ADVANTAGE - Improved accuracy and extended working life of pressure sensor.
Patent DE-4129604-A1 (DE)
Title: Method of determining radiation diagram of short-wave curtain antenna - measuring relative currents in dipole gap feeder lines, correlation current and impedance values for same positions to determine field strength values
Inventor: DICK PAUL
IPC: G01R29/10
Filed: 1991-09-06
Abstract: The determination method involves measuring the relative currents at any selected position in each supply line (19,21,23,25) leading to a dipole gap (18,20,22,24). An impedance measurement is performed at the current measurement position. The measured current and impedance values are correlated and used to determine the field strength values required for generating the radiation diagram. Both measurements are performed with the aid of a current transformer (30). USE/ADVANTAGE - Radiation diagram determined simply and economically.
Patent DE-4130007-A1 (DE)
Title: Contamination proof catheter hose union - has apertures in halves brought into line as required
Inventor: PALM UELO-AARNE
IPC: A61M39/18
Filed: 1991-09-10
Abstract: The union is for use between hoses, tubes etc. partic. those delivering substances to and from a catheter. A top half has several connections for infusion hoses etc., while a bottom one has one or more unions for a catheter passage. The apertures in the halves for the connections can be brought into line with each other, those not in line being sealed off watertight and contamination-proof. The union can be enclosed in flexible transparent plastic sheet, sterile on the inside, leaving only the connections free. The halves can comprise discs turned in relation to each other on an axis to which the apertures are parallel, these being on a common pitch circle centred on this axis. ADVANTAGE - Easy to use, with max. protection against contamination.
Patent DE-4130095-A1 (DE)
Title: Blast injection arrangement for metallurgical vessel - has refractory gas purging block and hole block with outer frame having peripheral sealing grooves
Inventor: STRUZIK ERICH
IPC: B22D1/00
Filed: 1991-09-11
Abstract: Blast injection arrangement for metallurgical vessel, with refractory gas purging block having gas passages and a gas distribution chamber connected to the gas supply, and which is surrounded by a refractory hole block with gas passages and a dished outer frame on its underside forming a second chamber in conjunction with a bottom plate, which is connected with the gas passages of the hole block. The outer frame has several peripheral grooves, forming a labyrinth seal when built it. The gas purge block is provided with peripheral grooves in its lower section. The gas purge block and hole block are of truncated cone form and sheet metal cased. USE/ADVANTAGE - It provides improved sealing for the refractory hole block built into the lining of a metallurgical vessel and the inset gas purging block.
Patent DE-4131546-A1 (DE)
Title: Candida lipase for high activity and aldehyde resistance - comprises covalent bonding to epoxy activated macroporous carrier for immobilisation and enantioselective esterification of chiral alcohol with enol ester
Inventor: FABER KURT DR
IPC: C12N11/08
Filed: 1991-09-21
Abstract: The immobilisation comprises covalent bonding of epsilon-amino gps. of the lysine in the lipase, by N-alkylation through opened epoxy gps. of an epoxy-activated macroporous carrier. The carrier is pref. prepd. by suspension polymerisation of vinyl acetate and a monomer, in water, partial saponification of the acetate gps. to OH gps., and reaction with epichlorohydrin, reacting with free OH gps. with retention of the epoxy ring. Pref. immobilisation comprises reacting the carrier with a soln. of the lipase in water, in a buffer or in a salt soln., at 15 deg. C - the deactivation temp. of the lipase, when covalent bonds form between epsilon-amino gps. of the lipase and opened epoxide gps. of the carrier. Pref., 0.05-0.1 g of lipase is used w.r.t. 1 g of carrier. In enantioselective esterification of a chiral alcohol, the alcohol is esterified in presence of an enol ester and of the immobilised lipase, then the ester and opt. unconverted alcohol are isolated from the reaction mixt. Pref., 5 equivs. of enol ester and 2-30 g of immobilised lipase are used w.r.t 1 g of chiral alcohol. The diluent may be any enol ester which also is used as reactant, pref. vinyl acetate, vinyl propionate or vinyl butyrate. The lipase is pref. from C. cylindracea. USE/ADVANTAGE - The stability of the lipase in enzymatic esterification of a chiral alcohol with centre(s) of asymmetry by an enol ester is raised. The selectivity is raised by more than 5x and remains constant on repeated use. Chiral, pure enantiomer alcohols are used, e.g. in synthesis of pharmaceutically active cpds. and agrochemica