baber/WOPTO huggingface dataset:
Patent DE-3716825-A1 (DE)
Title: DC/DC single-ended forward converter
Inventor: NEUMANN ERHARD DIPL ING
IPC: H03K17/0814
Filed: 1987-05-20
Abstract: In the case of known single-ended forward converters, the current flows through a storage inductance on the secondary side during the phase in which a switching transistor on the primary side is conducted. The current in the storage inductance, which reduces when the switching transistor is switched off, flows via a freewheeling diode into the connected load. The large voltage and current changes during switching of the switching transistor result in high spark interference voltages. In the case of the single-ended forward converter according to the invention, the storage inductance is arranged on the primary side. The power transistor is provided with a relief circuit. The resulting spark interference voltages are relatively low, so that the converter can be suppressed in a simple manner.
Patent DE-3719024-A1 (DE)
Title: Device for temporarily holding small parts, in particular precious stones
Inventor: DAMJANOWIC CHRISTOPH
IPC: B25B11/00
Filed: 1987-06-06
Abstract: When the button 2 is pressed counter to the action of the spring 12, the plunger 5 forces the air out of the space 10 and tube 9. If the free end of the tube is placed on a small part (precious stone 8) and the button 2 released, the spring 12 forces button 2 and plunger 5 to the left. The air around space 10 and tube 9 is rarified. The external air pressure holds the stone 8 on the tube 9. <IMAGE>
Patent DE-3721576-A1 (DE)
Inventor: YAMAMOTO AKIRA
IPC: G06F13/12
Filed: 1987-06-30
Abstract: In an input/output (I/O) scheduling method wherein I/O units (14) perform pre-processes of fixed time interval off-line from a controller (13) before data transfer processes, wherein a plurality of blocks are prefetched/postwritten between the I/O units and a buffer (21) disposed within the controller, and wherein a schedule process for determining a prefetch/postwrite data amount and a prefetch/postwrite data transfer start time of one I/O unit is executed at one schedule point, a next 28 schedule point is set to be earlier by the pre-process time interval than a time at which a prefetch/postwrite data transfer process scheduled at a present schedule point ends, and whether the transfer process of the I/O unit scheduled at the present point is executed or that of another I/O unit is executed is further determined depending upon an operating situation at the next schedule point. Allowance is thus made for e.g. the (off-line) start/stop/repositioning intervals of magnetic tape units. <IMAGE>
Patent DE-3729263-A1 (DE)
Inventor: MAURER FRITZ DR
IPC: C07F9/547
Filed: 1987-09-02
Abstract: The present invention relates to diesters of O-(6-methyl-2-alkyl-pyrimidin-4-yl)-O-alkyl-thionoalkanephosphonic acid, of the formula (I) 
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 in which
 R represents methyl or ethyl,
 R<1> represents methyl or ethyl and
 R<3> represents isopropyl or tert-butyl, which can be used as pesticides.
Patent DE-3729727-A1 (DE)
Title: Mandrel for winding web-shaped material
Inventor: KOCH ULF DIPL ING
IPC: B65H75/08
Filed: 1987-09-04
Abstract: A mandrel for winding web-shaped material is described, which has a core (10) which can be joined to a drive device (14) at one end and around the outer circumferential surface (20) of which the web-shaped material forms a reel (56) in the course of a winding operation. In the core (10) a slot (18) is formed, which extends in the axial direction, is open at least at the other end opposite one end and whose width increases inwardly from the outer circumferential surface (20) of the core (10). In the slot (18) there is mounted a clamping body (22) which is movable back and forth transversely to the longitudinal extent of the slot (18), whose thickness is greater than the width of the slot (18) in the region of the outer circumferential surface (20) of the core (10) and which is loaded towards the outer circumferential surface (20). <IMAGE>
Patent DE-3742674-A1 (DE)
Title: Liquid metal vapour trap with temperature control in the approach
Inventor: JUERGES HOLGER
IPC: G21C19/303
Filed: 1987-12-16
Abstract: In order to be able to operate vapour traps (7) used for cleaning the protective gas of liquid-metal cooled nuclear energy installations of metal aerosols, irrespective of the respective temperature of the liquid metal, within the required narrow temperature range for at least some hours without the aid of auxiliary heating prerequiring an energy power supply for malfunctions, the temperature reduction path (5) connected upstream of the vapour trap is provided with a thermal insulation (13) whose effectiveness can be carried out by means of a flap (14) as a function of the respective temperature of the gas to be cleaned, up to complete interruption of the natural convection of the intermediate space between the temperature reduction path and its insulation. In order not to hamper the convection taking place automatically through the chimney effect in normal operation, the cooling ribs (12) fitted on the temperature reduction path are arranged in an uncommon way, not transversely but longitudinally. <IMAGE>
Patent DE-3814205-A1 (DE)
Inventor: TAUREG HERBERT
IPC: F16H48/40
Filed: 1988-04-27
Abstract: A bevel gear differential comprises a carrier (11) in which is mounted side gears (18 and 19) and a planet gear support (28) which carries only three planet gears (25, 26 and 27) on planet pins (30, 31 and 32). The ends of the planet pins are provided with flats (35, 36) and are received in grooves (37, 38, 39) in the carrier in such a way that the support may pivot about a point (34) to equalise the loads on the planet gears. The ends of the pins preferably have a part cylindrical surface. The planet gears are preferably spaced unequiangularly about the axis (24) about which the planet gears can planetate. A viscous coupling may be incorporated to give the differential a limited slip capability. <IMAGE>
Patent DE-3820243-A1 (DE)
Title: Clamping clip and fastening arrangement for railway rails
Inventor: VORDERBRUECK DIRK DIPL ING
IPC: E01B9/30
Filed: 1988-06-14
Abstract: The invention relates to a clamping clip and a fastening arrangement for railway rails, in particular with the use of wooden sleepers. Known non-positive clamping pieces are, in the case of stretches of rails subjected only to light loads, too complicated and expensive and as a rule usable only where concrete sleepers are employed. The new clamping clip and fastening arrangement are intended, on the one hand, to be simply constructed and, on the other hand, to guarantee a permanent non-positive connection between rail and sleeper. This problem is solved by the use of a clamping clip (10, 20, 30, 40), whose one section (10a, 20a, 30a, 40a) runs parallel to the rail (6) and produces, owing to the pressing force of a sleeper screw (19), such an amount of frictional force that the horizontal forces occurring can be absorbed, and that a further section lies on the rail (6) and absorbs the vertical forces occurring. The clamping clip (10, 20, 30, 40) and the fastening arrangement produced therewith for railway rails is employed in particular on stretches at which light loads occur owing to low speeds and annual tonnages. <IMAGE>
Patent DE-3821174-A1 (DE)
Inventor: SCHULZ GUENTER
IPC: B65D75/56
Filed: 1988-06-23
Abstract: Portable package having a plastic film jacket which is closed on all sides and having a handle for carrying the package, the handle (5) being of double-layer design, possessing a fold line (6) on its end facing the top wall of the package (1), and being welded in the region of this fold line to the top wall. 
<IMAGE>
Patent DE-3829349-A1 (DE)
Title: Power unit of a motor vehicle two-stroke engine with 2n working displacements
Inventor: KLAUE HERMANN DR ING
IPC: F02B75/32
Filed: 1988-08-30
Abstract: The invention relates to motor vehicle two-stroke engines with 2n working displacements, in which each crankshaft has three bearings. In order not to adversely affect its width dimension and, at low cost, to design the connection to the output or the interconnection of a plurality of crankshafts free from play, the crank webs rotating on both sides of the centre bearing have opposing helical toothing so that, together with the gears seated on the output shaft or the two crank web toothings of a second crankshaft arranged parallel, the balance of axial forces is established. <IMAGE>
Patent DE-3829894-A1 (DE)
Title: Hydraulically actuated feed prop
Inventor: LEHR HEINZ
IPC: F16L55/34
Filed: 1988-09-02
Abstract: Hydraulically actuated feed prop having displaceable rear support. The support comprises a rear carriage which can be moved longitudinally in a channel having parallel side walls, is provided with clamping jaws which can be pressed against the side walls, and bears the rear bearing of a feed hydraulic cylinder which is double-acting in the longitudinal direction of the channel, engages on a front carriage arranged in front of the rear carriage in the channel, and, when the clamping jaws of the rear carriage are in the clamping position, displaces the said front carriage in the feed direction by means of the feed prop attached to the front carriage, the front carriage likewise being provided with clamping jaws which can be pressed against the side walls and which are released during the feed activation of the feed hydraulic cylinder, while, in their clamping position, the clamping jaws of the rear carriage are released so that the feed hydraulic cylinder can be drawn in while entraining the rear carriage.
Patent DE-3836384-A1 (DE)
Title: Movable, collapsible transportation frame with a locking mechanism
Inventor: CORDES WERNER
IPC: B62B5/04
Filed: 1988-10-26
Abstract: The invention relates to a movable transportation frame, which when not in use can be collapsed, for the transportation and storage of packages, in which in the working position at least one pivotable side part and a folding floor, which can be folded down from a vertical, space-saving rest position into a horizontal working position, are connected and locked by means of a locking mechanism. To increase the safeguard against erroneous operation and in order to make it more difficult for the lock to be released unintentionally, in the case of a lock having a cylindrical locking element a catch is proposed which is approximately L-shaped in cross-section and can be brought positively into and out of engagement with a tongue fastened on the folding floor.
Patent DE-3838949-A1 (DE)
Title: Device for vacuum sealing of an electrical machine having a cooled rotor winding and stator winding
Inventor: SCHMIDT WOLFGANG DR
IPC: H02K55/04
Filed: 1988-11-17
Abstract: The device for vacuum sealing is intended for an electrical machine having a rotor winding (15) which is to be cryogenically cooled and a stator winding (16) which is to be cryogenically cooled, within a vacuum area (I) which is surrounded by a vacuum housing (5). In this case, the vacuum area (I) is sealed from the external area (A) between the rotating rotor parts (3) and the fixed-position vacuum housing parts (4). It is intended to make an adequate seal possible using simple means. To this end, the invention provides that a gap (6) having an annular cross-section and a predetermined narrow gap width (w) has a predetermined, sufficiently large axial gap length (L) and is connected, at at least one extraction suction point (10) between its axial ends (11, 12), to a pumping device for differential extraction pumping. <IMAGE>
Patent DE-3841484-A1 (DE)
Title: Method and device for the improved lifting of thermally cut components from a blank plate
Inventor: HIRSCHBERG HANS DR
IPC: B23K7/10
Filed: 1988-12-09
Abstract: In the thermal cutting of components (13) from a blank plate (11), there is the risk at greater plate thicknesses of the components (13) tilting and jamming in the gap resulting from the kerf, so that they cannot be readily lifted from above by magnet or vacuum cranes. According to the invention, therefore, a pallet with the cut components (13) and the blank-plate frame is before lifting, transported to a clearing point (item 3), where elements with a preferably plane surface (29) are moved from underneath the pallet into the intermediate spaces of the plate-supporting means just in front of or up to the underside of the blank plate, in the course of which the components (13) showing slightly at the bottom are freed from the jammed position and can be easily removed from above by magnets or similar means (Fig. 1). <IMAGE>
Patent DE-3843572-A1 (DE)
Inventor: KAWA ROLF
IPC: C09K23/28
Filed: 1988-12-23
Abstract: A pearl sheen concentrate with a content of pearl sheen-forming components between 15 and 40 wt.% can be produced in the form of a free-flowing aqueous dispersion, if the dispersion also contains 5 to 55 wt.% of non-ionogenic, ampholytic and/or zwitterionic emulsifiers and 0.1 to 5 wt.% of low molecular weight polyhydric alcohols.
Patent DE-3900947-A1 (DE)
Title: Ergoline derivatives, their preparation and their use
Inventor: ACHINI ROLAND DR
IPC: C07D457/00
Filed: 1989-01-14
Abstract: The invention relates to ergoline derivatives which are unsubstituted in the 8-position and substituted in the 9-position, in the form of the free bases or their acid addition salts, their preparation and their use as therapeutics.
Patent DE-3905318-A1 (DE)
Title: Ski boot
Inventor: LEDERER STEFAN
IPC: A43B5/04
Filed: 1989-02-21
Abstract: In a ski boot, an instep region plate 20 and a heel Achilles-tendon region plate 22 are arranged between the inner boot 18 and the outer boot 10, 12a, 12b. A closed, double laid cable loop 24 runs twice via the outside of the instep region plate 20 and once via the outside of the heel Achilles-tendon region plate 22. A part of the closed cable pull forms a tensioning loop which is guided out of the outer boot and is connected to a tensioning device. The tensioning device is in turn mounted in the heel Achilles-tendon region on the outside of the outer boot 10, 12a, 12b (Figure 1). <IMAGE>
Patent DE-3906926-A1 (DE)
Inventor: GIOVANNI ARTURO DE
IPC: H01H37/54
Filed: 1989-03-03
Abstract: A system for fixing a transducer (1) to a wall (3) of a reservoir at least two substantially C-shape, counterposed, resiliently deformable hook elements (27) mechanically fixed at one end to a central portion (7, 18) of the transducer (1) and cooperating at their other ends (34) to form a bayonet-type coupling with a respective tooth (28) extending from the wall (3) of the reservoir. The hooks may be attached to a collar 18 bonded or resiliently clipped to the body 7. <IMAGE>
Patent DE-3911013-A1 (DE)
Title: Apparatus for conveying loads in shafts of great depth
Inventor: PIRKLBAUER SIEGFRIED DIPL ING
IPC: B66B7/02
Filed: 1989-04-05
Abstract: Apparatus for conveying loads in shafts of great depth, characterised by:   (a) at least one conveying unit (2) which is guided by at least one guide rail (16) running along the shaft (15); (b) at least one electronically commutated, permanent-magnet electric motor (8) for the drive of the conveying unit (2), which electric motor (8) is attached to the conveying unit (2); and (c) at least one toothed rack (20) running along the shaft (15) and at least one gear (14) which meshes with the toothed rack (20), is mounted on the conveying unit (2) and is connected to the electric motor (8) in a torque-transmitting manner.   <IMAGE>
Patent DE-3912977-A1 (DE)
Title: Supplying laundry items to mangle - by using conveyor with several transport clamps
Inventor: MEHRHOFF FRIEDHELM
IPC: D06F67/04
Filed: 1989-04-20
Abstract: A process for supplying laundry items to a mangle involves feeding the items to a transfer device through a conveyor equippedwith several transport clamps for seizing an item corner.  The items are held in the clamps in such a way that they hang in an upright position aligned in a straight line. ADVANTAGE - The process and associated unit reduces manual operations required in the feeding process.
Patent DE-3918523-A1 (DE)
Inventor: SINGEWALD ARNO PROF DR
IPC: C05G3/10
Filed: 1989-06-07
Abstract: Dust is bound in fertilizer granules by spraying the granules with a solution of molasses and another oxygen-containing hydrocarbon from the group glycerin, polyethylene glycol and triethanolamine.
Patent DE-3923302-A1 (DE)
Title: Conveyor for tropical fruit - has air conditioned two sets of conveyors travelling at different speeds
Inventor: GRAAFF WOLFGANG DIPL ING
IPC: B65D88/74
Filed: 1989-07-14
Abstract: The system for conveying goods which are conditioned during transport, such as tropical fruit, consists of containers with double walls incorporating air-conditioner.  Detachable connections attach the air-conditioning parts to the container-walls. One set of conveyors travels at a relatively low speed, as compared with second conveyors travelling at a higher speed.  Attachments take a set number of units after they have been detached from the containers. The conveyors travel through positions which have storage parts. USE/ADVANTAGE - The air-conditioned containers are divided into two constituents.
Patent DE-3942008-A1 (DE)
Title: Gas generator used in impact protection device - comprises cylindrical pressure chamber divided by perforated disc that retains gas generating material
Inventor: AIGNER JOACHIM DIPL ING
IPC: B60R21/264
Filed: 1989-12-20
Abstract: Gas generator for use in impact protection device for protecting the occupants of a vehicle has a cylindrical shape with a central part forming a gas generation chamber, in the form of a pressure chamber (10), and a filter chamber (3). The chambers are sepd. by a perforated disc or ring (50), with lugs formed on the periphery to exert sealing pressure on the gas generation chamber and to hold the filter in place. ADVANTAGE - Long-term sealing at the interface between chambers is assured.
Patent DE-4008658-A1 (DE)
Title: Microwave circuit - has soft board circuit module mounted on plate inset into printed circuit board
Inventor: QUADERER ULRICH DIPL ING
IPC: H05K1/14
Filed: 1990-03-17
Abstract: The microwave circuit has a printed circuit board with a conductive track pattern, discrete components and a cut out section. The esection is sized to receive a softboard microwave circuit element that has components bonded to the surface and in connection with the conductive track. The mcirowave circuit has a thick metal plate of copper or aluminium onto which is formed a dielectric layer of Teflon (TM).  This supports the copper layer which is etched. The assembly is fixed together by screws. ADVANTAGE - Avoids need for separate metal housing for microwave circuit element.
Patent DE-4010371-A1 (DE)
Title: Gas line probe removal device for gas supply - has line connected cylinder with control piston of gas permeable material movable regulated distance
Inventor: SCHLEMM FRIEDRICH
IPC: G01N1/22
Filed: 1990-03-30
Abstract: A gas sample is removed for calorific power measurement from a gas line (1) into a sample collection vessel (7). A cylinder (3) is connected to the line and contains a control piston (5), which is of gas-permeable material and can be moved along a regulating distance. Gas flowing through the piston flows through a line (6) with relatively low resistance into the vessel. Displacement of the piston, using a spindle or thread changes the effective length of the piston for resistance of flow. ADVANTAGE - Stable control over long period, economic for small consumers.
Patent DE-4021137-A1 (DE)
Title: Electronic carry adder circuit -  uses AND=circuits with five inputs andswitches very quickly even for addition of 9 and 1
Inventor: MERKLE PAUL
IPC: G06F7/491
Filed: 1990-07-03
Abstract: A carry-adder circuit has in addition to one AND circuit (9), only eight further AND circuits (1), each with two inputs and one AND circuit (2) with three inputs or only nine AND circuits each with two inputs. One (7) of the further AND circuits is driven at its second input by the output of a negation circuit (8). ADVANTAGE - Switches through very quickly not only in normal case but also for addition of 9 and 1.  An AND circuit with five inputs is eliminated.
Patent DE-4021456-A1 (DE)
Title: Renovation of localised damage in sewer pipes - in which resin impregnated mat is expanded against damaged wall and tapered resin rings are formed by inflation jacket at repair ends
Inventor: GUENZEL WILFRIED DIPL ING
IPC: E03F3/06
Filed: 1990-07-05
Abstract: Process and appts. for renovation of localised damage in sewer pipes is claimed. Appts. is pulled into the damaged pipe to the required location and produces a repair which neither hinders fluid flow nor allows solid matter build-up at the repair ends. A tubular relining section is carried on an inflatable carrier which projects beyond the ends of the relining section. Inflation of the carrier pushes the repair length against the damaged wall and the ends of the carrier itself presses against the wall. Excess resin squeezed from the relining section forms resin rings, having a tapered form extending in an axial direction, at the repair end. A smooth transition from pipe dia. to repair dia. is obtd.. USE/ADVANTAGE - Repairing localised fractures in waste water pipes and sewers. Fluid flow through the repaired section is not affected and solid particles in the fluid are prevented from forming a build-up at the repair ends.
Patent DE-4023397-A1 (DE)
Title: Open-end spinner - takes yarn off in curve round rotor for true twist for direct bobbin winding
Inventor: NIEDERER KURT W
IPC: D01H4/08
Filed: 1990-07-23
Abstract: The yarn in an open-end spinning appts. is taken from the take-off opening coaxially to the spinning rotor. It follows a rotating curved path, against the rotor rotation, around the outside of the rotor to be led out of the assembly.
Patent DE-4024233-A1 (DE)
Title: Automatic canopy covering surfaces or volumes. when it rains - has water sensor activating electric motor via switch and switch deactivating motor when cover end position is reached
Inventor: SCHULZE WOLFGANG
IPC: E05F15/71
Filed: 1990-07-31
Abstract: An arrangement for automatically covering surfaces or vols. contains a sensor which generates a pulse when it makes contact with water.  A switching element connected to the sensor activates an electric motor when the sensor generates a pulse. When activated, the motor moves a cover over the surface or vol. A further switching element switches off the motor when the cover has reached a defined end position. USE/ADVANTAGE - Covering terraces or interior courtyards of atrium houses when it starts to rain, preventing damage to soft furnishings, etc.  Convertible car, also preventing damage to interior fittings if left in open state.
Patent DE-4024782-A1 (DE)
Title: Shoe with reliable easy release fastener - has quick closure tension device for tightening loop of endless strap
Inventor: STEIN RAINER
IPC: A43C1/06
Filed: 1990-08-04
Abstract: he shoe has opposite spaced upper edge areas connected to strap like part with which the edge areas can be moved towards each other to adapt to the foot. At least one loop (5) of the straplike part (1) can be tensioned with at least one quick closure tension device (6) in order to tighten up the strap like part. The latter can be an endless strap. The quick closure tension device has a fastening device attached on the shoe side. USE/ADVANTAGE - The shoe remains securely fastened even when severly stressed although a quick release is possible when required.