baber/WOPTO huggingface dataset:
Patent DE-4003779-A1 (DE)
Title: Stove with combustion chamber - is designed with exhaust and secondary air channels having outlet to flue and to open air
Inventor: RIENER KARL
IPC: F23L9/06
Filed: 1990-02-08
Abstract: The stove includes a combustion chamber made up of a front with fire doors, sides and a back.  Between the sides and the back a convector is installed. : An exhaust gas channel (59) in the upper part (48) of the stove leads to the exhaust outlet (60) near the cover plate (26).  A secondary air channel (62) between the front (6) and the exhaust channel (59) has an outlet between the air duct shield and an impact strip (37) connected to the outer air. USE/ADVANTAGE - Stove has fire doors protected from grime and combustion is more efficient.
Patent DE-4009739-A1 (DE)
Inventor: SIEMANOWSKI WERNER DR
IPC: C07B61/00
Filed: 1990-03-27
Abstract: The present invention relates to a process for the preparation of 2,2-dimethyl-4-(2',3'-epoxy)propoxy-1,3-dioxolane. In this process, isopropylideneglycerol and epichlorohydrin are reacted in a molar ratio of 0.7 : 1 to 1 : 0.7 in the presence of at least one Lewis acid or at least one strong inorganic acid at temperatures of 283 K to 373 K, and the initially formed isopropylideneglycerol chlorohydrin ether is reacted with a strongly alkaline base in a molar ratio of chlorohydrin ether to alkaline base of 1 : 1 to 1 : 1.1 to give 2,2-dimethyl-4-(2',3'-epoxy)propoxymethyl-1,3-dioxolane. This compound is suitable as intermediate for the preparation of nonionic and/or ionic surfactants, as reactive diluent and as auxiliary, solvent and stabiliser.
Patent DE-4013531-A1 (DE)
Title: Single seed sowing drill with several drill sets
Inventor: KEMPER MARTIN
IPC: A01C7/04
Filed: 1990-04-27
Abstract: The sowing drill comprises a number of drill sets spaced side by side on a frame. In the region (9) between the drills, or behind them, are fitted soil loosening members (11), e.g. brush combs. The loosening members pref. have raking members, set obliquely to the travel direction (8) and parallel to the ground surface. They may be vertical, engaging the soil with their free ends.
Patent DE-4017938-A1 (DE)
Title: Coupling between drive and driven machine parts - consists of rotors with flat surfaces and attachments and bearings
Inventor: ZENKE HORST
IPC: F16D3/60
Filed: 1990-06-05
Abstract: The coupling for transmitting high rotational speeds and/or torsional forces consists of rotary pieces (3,4) on the ends of a driven and drive machine part (1,2) respectively, with flat surfaces. The rotary pieces (3,4) are then flush and the machine sections (1,2) are parallel with their flat surface. - Attachments (5,6) are fixed to the flat surfaces of the rotors (3,4) in an axial direction on the side facing away from the drive (1) and driven (2) machine parts. The rotors (3,4) are spaced apart so that the bearings (8,9) are vertically above one another.
Patent DE-4019150-A1 (DE)
Title: Water soluble non-toxic damping medium
Inventor: RESSEL WILLI DIPL ING
IPC: C10M101/04
Filed: 1990-06-15
Abstract: Door closing device (I) has a closing spring, a hydraulic piston-cylinder unit, in which the piston acts as a damping piston. When the door flaps move a pressure medium is conveyed from a pressure chamber through a restricted channel into a storage chamber having a lower pressure. The damping medium (II) is water-soluble, non-toxic and biologiclaly degradable. (II) is specifically a glycol, pref. a polyglycol, esp. a mixt. of the two, or a multivalent alcohol (polyethylene, esp. propane diol or butane diol), or polyethylene dimethylether, or butyldiglycol. Phosphate is pref. added to inhibit corrosion and soluble waxes can be added to improve lubricity.
Patent DE-4024256-A1 (DE)
Title: Welded structure rear axle for vehicle - has attachment of flat iron arms to U=shaped tube
IPC: B60G21/05
Filed: 1990-07-31
Abstract: The welded combined-linkage rear axle for a motor vehicle in which the axle carrier (1) consists of a curved tube of an approximately U-shaped which has short shanks (1b) relative to the cross-piece (1a). The cross-piece has along part of its length a slot (3) which determines torsional flexibility and each axle linkage (2) is formed from a curved flat iron which is welded to the axle carrier. USE/ADVANTAGE - Rear axle design which embodies an improved production method.
Patent DE-4030599-A1 (DE)
Title: Thermally-labile polymers, useful e.g. in thermoprinting - by polycondensation of reactive peroxy-di:carboxylic acid derivs. with di:phenol(s), di:amine(s) etc.
Inventor: NUYKEN OSKAR PROF DR
IPC: C08G63/79
Filed: 1990-09-27
Abstract: Thermolabile, peroxide gp.-contg. polymers of formula -(Alk-CO-O-O-CO-ALK-Z-Q-Z)n -Alk-CO-O-O- (I) are produced by polycondensation of reactive peroxydicarboxylic acid derivs. of formula nY-Alk-CO-O-O-CO-Alk-Y (II) with suitable reactive difunctional cpds. of formula nR-Q-R (III). In the formulae, Alk = pref. linear alkylene, arylene or aralkylene (opt. substd.); Q = divalent aromatic, aliphatic or cycloaliphatic gp.; Y = -COX (with X = Hal or H) or -NCO; R = -NHR1 (with R1 = H or alkyl), SH or OH; Z = corresp. ester, thioester, amide, urethane, urea or thiourea gp.. (II) is pref. a peroxydicarboxylic acid chloride, pref. succinyl chloride peroxide (IIA). The reaction is carried out by interfacial polycondensation in 2 mutually immiscible solvents, pref. at room temp. and with (II) partly replaced by a peroxide-free diacid deriv. Y-Q-Y. USE/ADVANTAGE - (I) are useful as polymers which can be stored, handled and processed under normal conditions, and decomposed by heating, e.g. to release an active substance, as in microcapsules for special papers used in thermoprinting; (I) have sufficiently high decompsn. temps. and are not light-sensitive (contrast prior-art systems contg. thermolabile azo gps.). The claims include thermolabile polymer films with repeating units contg. gps. Z as above, which begin to decompose at 100-130 deg C, pref. applied to a substrate, esp. on a carrier foil for thermally-addressable transfer, e.g. a thermotransfer ribbon, with a dye dispersed in the polymer film or in a separate layer applied over the film. (9pp Dwg.No.1/4)
Patent DE-4031349-A1 (DE)
Title: Automatic industrial packaging of coins - weighing single rolls and/or packets on packaging line to prevent faulty packaging
Inventor: WEISS HERBERT
IPC: B65B1/32
Filed: 1990-10-04
Abstract: A method of automatic industrial packaging of coins on a packaging line involves packing the coins into single rolls which are combined into larger packets and stacked into containers. The individual rolls and/or packets are checked and faulty ones removed. The checking of the individual rolls and/or packets involves weighing them within the packaging line. The packets are held on the packing line (2) by a movable suction device (45) and transported to the packet containers and stacked. USE/ADVANTAGE - Mint packaging. Ensures that faulty packaging is prevented whilst higher packaging capacity is achieved.
Patent DE-4035045-A1 (DE)
Title: Electrodynamic brake operating device for rail vehicle - uses release of stored energy in tensioned spring coupled to electric winding motor
Inventor: WILKE RICHARD DIPL ING
IPC: B60T13/74
Filed: 1990-11-05
Abstract: The brake operating device uses a regulated electric winding motor (10) for tensioning a spring (23) when the brake is open. The stored spring force is released to operate the brake via an intermediate brake rod (18) attached to a displacement sleeve (16) acted on by the spring (23). A mechanical plate spring (13) is inserted between the storage spring plate (15) and the inner end (47) of the displacement sleeve (16), allowing the spring displacement path to be transferred to a variable resistance (90a) used to control the braking force, the overload of the plate spring (13) prevented via limit stops (53, 54). ADVANTAGE - High reliability and precision.
Patent DE-4035076-A1 (DE)
Inventor: BARTZKE KARLHEINZ DIPL ING
IPC: G01B7/34
Filed: 1990-11-05
Abstract: Proposed is a device designed to measure linear dimensions on the structured surface (6) of an object (7), a pointed sensor tip (5) touching the surface (6) being fixed to a resonator (4) which is moved parallel to the surface (6) and whose position is determined using ordinary distance-measuring systems. In addition, the resonator (4) is connected to a processing circuit designed to detect resonance changes and to a subsequent control circuit (10) which is connected to position-control elements (2, 3) acting on the resonator (4) in a direction perpendicular to the surface (6). A phase-measurement circuit (9) is used as the processing circuit, the inputs to this circuit being connected to electrodes which are attached to the resonator (4).
Patent DE-4039239-A1 (DE)
Title: Multi-terminal electric plug unit - has plug housing and socket housing pivotably connected and lockable together
Inventor: ZINN BERND
IPC: H01R13/506
Filed: 1990-12-08
Abstract: A multi terminal electric plug unit comprises a plug housing (2) and a socket housing (3) connected by a pivot joint (14) and locked by a lock unit (16) opposite the pivot joint (14).  The pivot joint (14) comprises a hook (62) on the plug housing (2) which hooks into a cut away joint holder (28) in the socket housing (3). The lock unit (16) has a ramp (32) for the socket housing (3) to swing over. The hook points to the side of the plug housing (2) and the  cut away portion (28) is open on the socket housing side. The plug housing (2) also has an extension (29) opposite the joint (14) projecting towards the socket housing (3). USE/ADVANTAGE - Simple construction. The lock prevents relative movement between plugs and sockets maintaining good connections. Easy to use, inexpensive.
Patent DE-4039711-A1 (DE)
Title: High temp. furnace - has long heating chamber fitted in insulated housing, at least on heat conductor and at least one temp. sensor
Inventor: DHUPIA G S DR RER NAT
IPC: F27B5/04
Filed: 1990-12-12
Abstract: The insulating housing (1) is divided by intermediate walls (4) into individual cells (6). Through the housing is positioned axially a corundum tube (2). In each of the cells is a heat conductor (3) which is U-shaped, with its round formation set around the corundum tube. This ensures that the corundum tube is heated equally from all sides. The housing has an outer wall, with a heat-resistant cladding, with the choice of material conforming to the temp. to be reached in the furnace, viz. up to 1800-2000 deg.C. A base is located on the heat-resistant cladding on the floor of the housing which is touched by the corundum pipe. The arms of the heat conductor (3) are conducted outwards through the heat-resistant cladding and the outer wall. Insulating sleeves ensure a stable fit of the heat conductor in the housing. USE - As a high temperature tube furnace, reaching temps. between 1800 and 2000 deg.C.
Patent DE-4041604-A1 (DE)
Title: Injection moulding equipment esp. for dental prostheses - includes cartridge in tube split in lengthwise direction
Inventor: ZEISER MANFRED P DR
IPC: B29C45/46
Filed: 1990-12-22
Abstract: Injection-moulding equipment has a frame with pressure-operated ram, a cylindrical bore accommodating a cartridge filled with the moulding material, and a vessel accommodating or forming the mould. The mounting forming the bore for the cartridge is split in the lengthwise direction of the latter, the halves together forming a tube of the length of the cartridge, and of dia. equal to its external dia.. ADVANTAGE - Fast working, no preheating being necessary
Patent DE-4100900-A1 (DE)
Inventor: LEITNER MARTIN
IPC: A47B57/46
Filed: 1991-01-15
Abstract: A partitioning system has vertical stays and horizontal linking tubes that allow panels to be mounted on the stays by means of linking elements. The stays have a linking bar that extends in a perpendicular direction to the plane of the partition and that is provided with a row of linking holes. Cantilever arms that project perpendicularly to the plane of the partition can be mounted on the stays. Partitions with a closed visible side can thus be easily mounted by means of specially designed linking elements that remain out of sight.
Patent DE-4103438-A1 (DE)
Title: Cooling of gas turbine blades - by applying electric charge to gas and to turbine blades
Inventor: EGERLAND JENS
IPC: F01D25/12
Filed: 1991-02-01
Abstract: The blades of a gas turbine are cooled by applying an electric charge to the combustion gases as they pass through the combustion chamber (1). The electrically charged particles thus produced are all of the same sign. An electric charge of the same sign is also applied to the turbine blades. A boundary layer is produced around each turbine blade. This boundary layer forms a layer of thermal insulation which protects the turbine blades from the high temperature of the through flowing gas. USE - Gas turbines with electrostatic blade cooling system.
Patent DE-4104809-A1 (DE)
Inventor: BRAHMS MARTIN
IPC: H02M7/48
Filed: 1991-02-16
Abstract: A circuit arrangement is specified for the production of an alternating voltage in an electronic apparatus which is connected via a remote supply (ASL) to a DC voltage. Arranged in the apparatus are a power supply section (2) and a clock transmitter (4) whose pulses are supplied via a control element to the control electrode of a first transistor (T1). Located in the current path of the first transistor is the primary winding (6), which is connected to the DC voltage, of a transformer to whose secondary winding (7) at least one external load (RL) is connected which is equipped with a coupling capacitor (CK). A second transistor (T2), whose control electrode is likewise connected to the control element, is connected with its current path in series with the secondary winding (7) of the transformer. The control element has a logic unit allocated to it by means of which only one of the two transistors is always selectively connected to the clock transmitter (9). The coupling capacitor is thus alternately charged and discharged again. <IMAGE>
Patent DE-4106888-A1 (DE)
Title: High strength sandwich type components - have core of e.g. resin foam completely enveloped in strong fibre fabric wraps impregnated with e.g. epoxy] resin which forms skin
Inventor: YOUNG FREDERICK
IPC: B62D35/00
Filed: 1991-03-05
Abstract: Sandwich construction material has a core of plastics, polyurethane foam or styrene foam, a surrounding reinforcement of knitted fabrics, matts, mesh etc. with high strength fibres such as glass, carbon etc., and a polymer (and epoxy resin in particular) which impregnates the reinforcement and forms a skin. The core is wrapped round by the reinforcement; joins between individual fibres or sheets of reinforcement adjoin the dividing line; the impregnating resin is a two-part foam and an epoxy type in particular. Pref. a core (6) of a resin foam is enveloped all round with reinforcement (7) which is held in position by (8) e.g. staples, pins, adhesive etc. The  reinforcement (7) consists of several layers (9,10,11) of suitable fabric etc. made with the appropriate fibres (12) or wire etc. The layers (9,10) are continuous wraps, to avoid high stress points. A mounting base (17) is incorporated for fixing purposes when the final prod. is being used. The outer resin (16) forms the ADVANTAGE - Prod. has a high mechanical strength and its surface takes coatings well. The complete visible face is produced in a single operation.
Patent DE-4107362-A1 (DE)
Title: Surge-free switching-on of inverter to 3 phase asynchronous machine - using current desired value-current actual value comparison across search current regulator
Inventor: LANGE MATTHIAS DIPL ING
IPC: H02P21/34
Filed: 1991-03-05
Abstract: The determination of the synchronism of teh inverter and the three-phase asynchronous machine is carried out using the comparison of a current desired value and a current actual value across a search current regulator. With an inverter, which normally presupposes a stator voltage, across a rotor flux oriented voltage model of the three phase asynchhronous machine, as well as the corresp. phase position of this voltage. A magnetising current regulator (6) reacts to correct the voltage model, for compensating the non-linearity, whilst a rotor current regulator (3) reacts on the stator frequency to be specified corresp. to the load requirement, with both regulators getting their actual values from a current actual value computer (7). The current regulator is used as a search current regulator, to which is specified the current desired value zero with faded out magnetising and rpm regulators, thereby specifying any selectable starting frequency, for the inverter. The inverter is operated by the voltage model with a reduced output voltage, until the current actual value has reached a min. value. With the reaching of this min. value, the frequency value established is used, for initiating the operational type control of the three phase asynchronous machine. USE/ADVANTAGE - Type method which uses far less costly synchronising circuit for surge free connection of three-phase machine to inverter.
Patent DE-4107414-A1 (DE)
Inventor: OUZOUNIS DIMITRIOS DR
IPC: C11D17/00
Filed: 1991-03-08
Abstract: Aqueous liquid detergent used, in particular, for manual washing-up, based on synthetic anionic and/or non-ionic surfactants and possibly containing other usual components, particularly solvents, hydrotopes and salts, and characterized in that they contain as hydrotopes, di-salts of sulfo-oleic acid. Preferably, disodium salts of sulfo-oleic acid will be used.
Patent DE-4109928-A1 (DE)
Title: User electrical power consumption measuring system - is supplied respectively with current across supply lines which are connected together at central metering unit which determines power sum
Inventor: BECKER DIETER
IPC: G01R21/133
Filed: 1991-03-26
Abstract: The central metering unit (ZM) produces an electrical pulse, the pulse repetition frequency of which is a measure for the summed instantaneous power consumption of all the user units. The pulse sequence is introduced in a collector (20) having several measurement channels (20a,20b,20c), which adds on the pulses for each of the individual channels and produces a signal (40), which corresponds to the summated power consumption of all the user units per time interval. Split cone current transformers (22,24) are provided at the plant, at one part at least of the supply lines (16,18) to the individual user units (I,III). The output signals of the transformer are entered respectively together with the voltage of the assigned user unit in a separate measurement value converter (28,32). The converter gives a signal corresp. to the instantaneous power consumption of the assigned user unit, which is converted into a pulse sequence. The pulse sequences are entered into the channels (20a,20c) of the collector (20). USE/ADVANTAGE - Determines summated instantaneous power consumption of all user units of customer. No further fixed installation required at customer premises.
Patent DE-4111644-A1 (DE)
Title: Controlling automatic transmission of motor vehicle - storing value of throttle setting prior to torque reduction as gearchange position
Inventor: PFISTERER MARKUS
IPC: F16H61/02
Filed: 1991-04-10
Abstract: A programmed gear-change control operates on engine speed and throttle setting. The wheel-spin control reduces the torque by reducing the throttle setting. The last throttle setting, prior to torque control, is retained as a reference for the gear-change control. Providing the reference value is less than the actual throttle setting, the transmission remains unaltered. ADVANTAGE - Gear-change operation is stabilised, with less switching between gear ratios. Stable and safe wheel-spin control.
Patent DE-4112792-A1 (DE)
Title: Cleaning floppy disc drive magnetic heads - operating disc at increased speed for specific period with controlled head discharge while being moved across surface
Inventor: RASEK EDUARD DR
IPC: G11B19/26
Filed: 1991-04-19
Abstract: A magnetic floppy disc drive has a facility for cleaning the magnetic heads by increasing the relative speed between the disc and the head, for a specific period. The disc drive (40) and head drive (42) are normally controlled by a circuit (11). A logic circuit (23) responds to an external signal (44) to initiate the cleaning cycle by increasing the input to the drive motor (5) and raise the speed of the disc. At the same time, head positioning signals are monitored and the heads are moved a number of times across the surface of the disc. ADVANTAGE - Intensive cleaning of magnetic heads.
Patent DE-4114696-A1 (DE)
Title: Static compensating assembly for forces acting on circular tracks - has compensating cylinder and hydraulically acting spring accumulator forming compact unit
Inventor: GERLACH RAINER DR ING
IPC: B23Q11/00
Filed: 1991-05-06
Abstract: The compensating cylinder (1) lies in the accumulator (2) which is designed as a ring cylinder. The fluid columns of both operating cylinders are connected directly together. The compensating cylinder can be fixed to the spring accumulator cylinder, whose ring piston slides inside over the compensating cylinder. USE/ADVANTAGE - Two spatially separate cylinders on static compensator are replaced by one unit to give constant force.
Patent DE-4116293-A1 (DE)
Title: Restitution of oil well blowouts - using combination of sleeves to tee into the oil pipe in excavated gallery, allowing fire to be extinguished safety whilst maintaining prodn.
Inventor: KLOS ALFONS
IPC: E21B33/03
Filed: 1991-05-17
Abstract: The restitution of burning oil or natural gas wells to extinguish fire and control blow outs with minimum danger to personnel, involves tunnelling beneath the oil pipe, excavating a subterranean gallery around the pipe allowing sleeves to be clamped around the exposed pipe. The sleeves are oil tight and have cutters and ball valves attached. Once the pipe wall has been breached, the ball valve is closed, the cutter removed and a replacement pipe line coupled up. Several sleeves are used in series, reducing the pressure at the surface enabling the surface fire to be more easily extinguished. The oil pipe is also closed by means of hydraulic clamps pressing the walls of the pipe together. Two clamps at right angles ensure adequate restriction. ADVANTAGE - Allows burning oil feed pipes, particularly oil well fires to be brought under control in complete safety. Allows the well to remain in production. The appts. is small and light enough to be manhandled.
Patent DE-4117726-A1 (DE)
Title: Error correction in digital communication or storage system - involves stepwise computation of sets of coeffts. from syndromes of block data multiplication by equality matrix
Inventor: LEE MAN-YOUNG
IPC: G06F11/10
Filed: 1991-05-30
Abstract: Four syndromes of n received words are calculated by a syndrome computer (120) for use in prodn. of two sets of coeffts. (130,140) and an error site value (150). Actual error sites are found from the computed site values and applied to an error value computer (180). The number of errors is obtd. from a discriminator (160). The error site value computer (150) uses Exclusive-OR logic to solve a set of eight simultaneous equations related to the coeffts. of the second set (140). ADVANTAGE - Erroneous values can be detected in shorter computation time by simplified circuit.
Patent DE-4119466-A1 (DE)
Title: Extensible and retractable tower structure
Inventor: ZUSE KONRAD PROF DR ING
IPC: E04H12/18
Filed: 1991-06-13
Abstract: The tower structure is extensible or retractable in its height.  It is constructed from elements (2) which can be joined end to end to form a helical surface, with the adjacent turns abutting against each other. The elements are fed from magazines (8) at the base of the tower.  A lifting device lifts the tower sufficiently to enable an element to be inserted in the position (2b) under the structure so that the height of the tower is increased.  The height of the tower can be reduced by reversing the process.