baber/WOPTO huggingface dataset:
Patent DE-3835919-A1 (DE)
Title: Pipe-water lifting through base-rotation suction
Inventor: GOERES HANS DIETER WILHELM
IPC: F04B47/02
Filed: 1988-10-15
Abstract: Device for producing subatmospheric pressure on a circular base disc movable in an upward-leading pipe, in order to lift said disc (more) easily together with the pipe water situated thereabove in the pipe. The circular baseplate or disc is rapidly rotated, and fits properly with its edge in the pipe, so that no friction arises. Located above it is an arrangement of inclined blades radiating from the centre axis, for preventing inert co-rotation of the water medium, it also being possible to use longitudinal sheets additionally or instead to fulfil this purpose. The disc can also be initially rotated on a non-rotated base disc at a minimum distance from it, which is the same as the above embodiment, since, below it and on the base, suctions likewise result which cancel each other out, and only above the disc does there result a suction which has not been cancelled out, in comparison with the underside of the base disc. Water can be conveyed with this device. This pump requires less energy than if, for example, an agitator is used to rotate the water above a fixed disc, and also less energy than other previous pumps, for example centrifugal pressure pumps, etc.
Patent DE-3838002-A1 (DE)
Title: Snow-clearing strip stop rail
Inventor: SCHOTENROEHR RUDOLF
IPC: E01H5/06
Filed: 1988-11-09
Abstract: To prevent the plough jumping and to improve force dissipation of impacts occuring due to unevennesses and obstacles on the road surfaces, the snow-clearing strip stop rail is used. The snow-clearing strip stop rail is placed between plough and snow-clearing strip and screwed on. By this measure, the snow-clearing strip is provided with a more favourable clearing angle of 90@.
Patent DE-3838246-A1 (DE)
Title: Scoring machine
Inventor: KRAUSSE GUENTER
IPC: B26D3/08
Filed: 1988-11-11
Abstract: Plate-shaped workpieces, in particular printed circuit boards, often have several individual circuits which are to be separated from one another after completion of the circuit board. This is done by breaking the circuit board along grooves or breaking notches made beforehand. According to the invention, a top and a bottom tool bit 1, 2 are provided on the scoring machine. The top and bottom tool bits 1, 2 are arranged in alignment with one another and are each rotatable about their longitudinal axis. Furthermore, a slide 3 which carries the tool bits 1, 2 is traversable in a first direction X of motion, while a table 5 on which a workpiece 4 is mounted is traversable in a second direction Y of motion. According to the invention, it is possible to produce any curved paths for separating individual circuits. <IMAGE>
Patent DE-3844419-A1 (DE)
Title: Underwater discharger for crushing concrements
Inventor: ZACHAROV VIKTOR NIKOLAEVIC
IPC: G10K15/06
Filed: 1988-12-30
Abstract: The underwater discharger for crushing concrements comprises a high potential current supply (1) and a low potential current supply (12) which are coaxially arranged and separated by an insulating intermediate layer (10), each of these current supplies being connected to an associated fastening subassembly (8, 17). Each fastening subassembly (8, 17) is mechanically connected to a high voltage electrode (7) and a low voltage electrode (18) which form a discharge chamber (21). At the same time, the low voltage electrode (18) is curved with regard to its geometrical longitudinal axis of symmetry and its convex surface faces the discharge chamber (21). <IMAGE>
Patent DE-3915547-A1 (DE)
Title: Gun for using small calibre ammunition - has auxiliary opening to increase recoil force on breech block
Inventor: UHL JOHANN
IPC: F41A5/24
Filed: 1989-05-12
Abstract: A gun for firing small calibre ammunition has a barrel (1) with a bore (2) and a sliding breech block (3). The breech block (3) has a projecting pin (11) which engages a hole (7) in the wall of the barrel parallel to the bore (2). This hole (7) is connected by a radial hole (4) to the barrel bore (2). When a bullet (5) is fired the gases from the explosive charge flow through the radial hole (4) and act on the pin (11) so that the recoil force on the breech block is increased. This  facility is partic. useful when using practice ammunition with small explosive charges. The increase in recoill force ensures that the breech block (3) is fully retracted. USE - Guns using small calibre ammunition.
Patent DE-3919143-A1 (DE)
Title: Heat exchanger for heating or cooling room - is made from sheet metal with internal passages for cooling medium
Inventor: BRUNK MARTEN DR ING DR
IPC: F24D3/16
Filed: 1989-06-12
Abstract: The room is heated or cooled by a heat exchanger in the form of a flat panel. The heat exchanger is made from sheet metal and has internal passageways for the circulation of the heating or cooling medium. These passageways are formed as an integral part of the heat exchanger. The heat exchanger is intended to be mounted on a wall, or on the floor or on the ceiling of the room. The exposed surface of the heat exchanger may be covered with a layer of synthetic resin or  with a layer of mineral material. USE - Air conditioning of rooms.
Patent DE-3921094-A1 (DE)
Title: Machining of inside and outside profiles of workpieces - by machine tool with mandrel which is guided radially and axially
IPC: B21H1/06
Filed: 1989-06-28
Abstract: A machine tool for the accurate  machining of the inside or outside profile of a workpiece (13) has a single mandrel (1) which carries the profiling tool.  The workpiece (13) is supported by a main roller (2) in the radial direction and by tapered rollers (12) in the axial direction. The mandrel (1) is moved axially and radially along a defined path during the machining operation in order to produce the required profile.  The mandrel (1) may be guided manually or it may be guided by the program of an N.C. machine tool. USE - Machine tools.
Patent DE-3929917-A1 (DE)
Title: Motor-adjustable seat with interlocking upper and lower rails - has free end of motor pinion shaft supported by strip of hard or hardened material extending over adjustable distance
IPC: B60N2/07
Filed: 1989-09-08
Abstract: The seat, is esp for vehicles, it has upper (2) and lower (4) interlocking rails. A motor driven pinion (1) on the upper rails meshes with a rack (3) on the lower rail, allowing forward/rearward seat adjustment. A strip (6) of hard or hardened material is fitted to the lower rail above the pinion shaft (11) to support the free end (11) of the shaft. The strip extends at least over the adjustable distance of the seat. USE/ADVANTAGE - Seat adjustment for vehicles. The pinion and rack remain in mesh even under high loads.
Patent DE-3935861-A1 (DE)
Inventor: LITTERER HEINZ DR
IPC: C07B61/00
Filed: 1989-10-27
Abstract: Described is a method of preparation of fluorobenzenes and fluorotoluenes of the formula (I) in which X is H or a methyl group, R<1>, R<2> and R<3>, independently of each other, are at least one of the residues H, F, Cl and C1-C3 alkyl, at least one of these residues being fluorine, and S<1> and S<2>, independently of each other, are H and/or residues which decrease the electron density in the benzene nucleus, but preferably H, characterized in that benzaldehydes of the formula (II) in which R<1>, R<2>, R<3>, S<1> and S<2> are as defined above, are reacted at 150-600  DEG C on a catalyst, activated by treatment with hydrogen, comprising at least one transition metal of groups VII and VIII in the periodic table.
Patent DE-3937287-A1 (DE)
Title: Continuous sepn. of fatty acid mono:glyceride from mixed glyceride(s) - by countercurrent extn. with supercritical carbon di:oxide in 2 packed columns in series, with higher gas pressure in second column
Inventor: BAMBERGER THOMAS
IPC: C07C67/58
Filed: 1989-11-09
Abstract: A process is claimed for separating fatty acid monoglyceride (I) from a mixt. of mono- (I), di- (II) and tri- (III) -glyceride, using a counter-current of supercritical CO2 as extractant; the novelty is that the (III) and part of the (II) are sepd. in a first stage at 50-130 deg.C and 100-160 bar (pressure P1), then (I) is sepd. from the remaining mixt. in a sec. stage at a higher pressure (P2). Unit for the process comprises a first extn. column with liq. inlet at the top and gas inlet at the bottom, a stripper connected to the top of the column, a second column connected to the bottom of the column via a compressor and fitted with a liq. inlet at the top and a gas inlet at the bottom, a second stripper connected to the top of the second column and a third stripper connected to the bottom of the second column compressed gases are expanded in strippers. Sepn. is pref. carried out in packed columns as a continuous process. The bottom prod. from the 1st column is fed into the top of the second column and (I) is taken off as bottom prod. from the 2nd column. After each stage, the loaded gas is expanded to a lower pressure and recycled, pref. via a filter. USE/ADVANTAGE - The invention enables the sepn. to be carried out as a continuous process on the industrial scale, without using an entraining agent; (I) only comes into contact with CO2,  which is an advantage w.r.t. to the use of (I) as a food additive.
Patent DE-3940743-A1 (DE)
Title: Portable saw for trepanning holes and hole segments - has oscillatory drive to cup-shaped cutter having edge chosen to suit material
IPC: B27B19/00
Filed: 1989-12-09
Abstract: The cutter is cup-shaped and consists of a lightweight holder (2) with a cutting element (1) in the form of a thin cylindrical band extending from the holder. The edge (4,4',4'') may be of several types, e.g. saw-toothed, smooth or abrasive, depending on the application and the band may be a full or part circle. The portable power tool drive may be pneumatic or electrical and imparts an oscillation to the cutter through an angle of 0.5 to 10 deg. and at a frequency of 4000 to 20,000 cycles per second. The cutter has a hexagonal aperture fitting on a corresp. hexagon on the driving shaft. USE/ADVANTAGE - Holes and hole segments up to about 150mm in a wide variety of materials. Clean accurate hole profiles. Safe and easy to use.
Patent DE-3941951-A1 (DE)
Title: Combined chemical-biological treatment of contaminated waste - has washing reaction operating intermittently
Inventor: HARTMANN HELMUT DR
IPC: B09C1/10
Filed: 1989-12-20
Abstract: Washing liq from which solids are sepd after treating biologically and/or chemically contaminated material contains a chemical component which can be biologically broken down, and a biological component with heterotrophic micro-organisms whose nutriment consists of the chemical contaminant, with the chemical component of the washing liq providing carbon and energy. Washing therefore initiates a decontamination reaction with contaminants transferred to the washing liq for breaking down by microorganisms. Since mechanical sepn of liq from solids as in P3938464 is sometimes incomplete, the washing and reaction process is now operated discontinuously with pre-determined action periods. In suitable appts a pivotable container has a perforated floor between the washing space, with its lateral discharge outlet, and a lower reception space. Mechanical rakes remove treated solids from the washing space, which holds sprayers for rinsing and other water supplies, together with vacuum filter-candles. USE - Applicable eg to inert prods contaminated by poisonous organic cpds and with wide possible range of particle size and nature.
Patent DE-3942431-A1 (DE)
Title: Frequency and phase detector for NRZ system - has true and inverse clock compared to NRZ data and output differences to setting phase-frequency
Inventor: LEE BHUM CHEOL
IPC: H04L7/00
Filed: 1989-12-21
Abstract: From the clock signal of a voltage controlled oscillator there is derived a true and a phase-inverted clock. A synchroniser device synchronises NRZ data received at the input, with the true and inverse clock. A first circuit forms the phase difference between the NRZ data received at the input, and that synchronised with the true clock. A second circuit forms the phase difference between the NRZ data synchronised with the phase inverted clock and that synchronised with the phase-true clock. The outputs of the two circuits are compared together to form a phase difference, and this is used to determine the phase and frequency. Logic circuitry is described, using D flip-flop and exclusive OR gates. ADVANTAGE - Reduced jitter, in circuit using standard elements.
Patent DE-3942986-A1 (DE)
Title: Pneumatic multi-circuit vehicle brake - incorporates multiple valves and circuits for rapid charge of reservoir on starting
Inventor: WOLFF HANS-KLAUS DIPL ING
IPC: B60T15/52
Filed: 1989-12-27
Abstract: The brake with a rapid start device is for the multi-circuit braking system of a vehicle. It has air containers, protection valves, compressed air circuits, secondary consumers, and operational brakes with a 2/2 position valve. The 2/2 position valve (7) in the feed pipe (10) is connected to a second 2/2 position valve and both valves are controllably connected via the reservoir pipe (12) and the three circuit protection valve (4) with the reservoir circuit. USE/ADVANTAGE - Preumatic vehicle braking system in which the rapid start arrangement is switched off on attaining the necessary pressure and which can be made from standard parts.
Patent DE-4002053-A1 (DE)
Title: Locking differential for four wheel drive - has three-position servo for freewheel and normal and locked drive
Inventor: WAKAI KENICHI
IPC: F16H48/26
Filed: 1990-01-24
Abstract: The locking differential is mounted between the half shafts (3a, 3b) of the non driven axle when the transmission is in two wheel drive. The halfshafts have clutches (33-31, 32-34) which  disconnect the drive in two wheel mode and an additional clutch (35) which locks the differential effect. A single servo (4) drives all the clutch operation. The servo operates two claws (42, 43) which move the clutch parts.  A first position covers the open clutch mode. A second position engages the clutches for normal travel while a third position locks the differential. The three positions are sequential. USE/ADVANTAGE - Compact differential action, quiet running for two wheel drive.
Patent DE-4003011-A1 (DE)
Title: Towing hook for motor vehicle - is fixed by locking bolt to bracket attached to vehicle
Inventor: RIEHLE HANS DIPL ING
IPC: B60D1/52
Filed: 1990-02-02
Abstract: The towing hook for fitting to a motor vehicle consists of a curved bar (1) with a bail (2) formed on the outer end. The other end of the bar fits in a socket (3) which is attached, by an extension (9), to a U shaped bracket, which is fixed to the vehicle structure. The bracket (8) carries three transverse bolts (7) and the extension has a recess which fits around the lowest bolt. The hook is prevented from rotating about this lowest bolt by the middle and upper bolt. A locking bolt (11) prevents the hook from being moved vertically upwards and so being disengaged from the lowest bolt. USE - Towing hook.
Patent DE-4004675-A1 (DE)
Title: Magnetic tape cassette with deflection roller - having central bore with convex inside face fitted over perpendicular pin
Inventor: ZERONI LUDWIG
IPC: G11B23/087
Filed: 1990-02-15
Abstract: The magnetic tape cassette has a rectangular plastics housing contg. a pair of tape reels lying adjacent one another in a horizontal plane. The tape is fed between the reels via a magnetic head zone along the front edge of the housing, with a deflection roller (2) on each side of the latter zone. Each deflection roller (2') has a central cylindrical bore (4) fitted to a perpendicular pin, the inside wall of the bore having a convex curvature and the opposing ends of the bore each projecting beyond the roller end faces. ADVANTAGE - Reduces noise at high tape transport rates.
Patent DE-4005346-A1 (DE)
Title: High frequency current impulse for galvanising unit - is applied at voltage three times that of operational voltage and has steep pulse flanks
Inventor: DOENIG GERHARD DIPL ING
IPC: C25D5/18
Filed: 1990-02-20
Abstract: Supply circuit for galvanising unit generates a high-frequency current impulse with steep pulse flanks and has the novelty of employing at least an additional constant voltage (UI) whose min. value is at least three times as great as the max. value of the operations voltage (U2), but whose polarity is the same as that of the operational voltage. The higher voltage (U1) is applied to the galvanising unit when the current impuse is activated. The voltage (U1) is switched to the operating voltage (U2) the moment the current strength (I(t) which passes through the object being coated attains a predetermined initial current strength (Io). Pref. the operating voltage (U2) is 20-50V with the additional voltage being 200-1000 V, or more specifically 500V. The polarity of the additional voltage can be reversed. The voltage course which supplies the higher voltage contains elements, more specifically power semi-conductors, which facilitate the switching of the voltage. ADVANTAGE - Improved galvanic coating is achieved with the use of a pulsed current.
Patent DE-4006004-A1 (DE)
Title: Decorative illuminated profile rail for display stand - has opposing channel respectively receiving light tube and current supply rail
Inventor: BUERS FRIEDHELM
IPC: A47F3/00
Filed: 1990-02-26
Abstract: The profile rail (2) for a display stand support post or edge rail, provides simultaneous illumination of the displayed objects. It has an approx. rectangular cross-section, with elongate channels (11,23) at 2 opposing corners, the channel; (11) lying at the outer edge containing a fluorescent light tube (10). The opposing channel (23) receives a current rail (27,28) for supplying one or more light tubes (10). The inwards facing side edges (20,37) of the rail (2) have reception slots for support elements (34) clamped in place via bolts (35).
Patent DE-4014696-A1 (DE)
Inventor: DREXEL PETER DIPL ING
IPC: B60L11/18
Filed: 1990-05-08
Abstract: Described is a device and process for charging the battery of a self-powered electric transport vehicle, in particular self-powered transport trolleys in workpiece-transfer systems. The device is characterized in that a charge-control unit (15) is fitted in the transport vehicle (11), the charge-control unit including a processor (24) connected to at least one memory unit (23), a device (33) for determining the battery charge status and a device (25) for regulating the charging. In the process disclosed, the charge status is compared by the processor (24) in the transport vehicle (11) with at least one reference level and the result used by the processor (24) to control the charging in such a way that the battery (14) is charged at least to the reference level stored in the memory unit (23), in particular to the minimum level required for the vehicle to reach the next charging station (16) or to a pre-determined maximum level.
Patent DE-4017580-A1 (DE)
Title: Free positioning device for cable mfg. aids - obtains retaining force without external operating elements or external energy sources
Inventor: WILLY ARMIN DIPL ING
IPC: B25B11/00
Filed: 1990-05-31
Abstract: Retaining force is applied between a planar surface of a support base and the opposing surfaces of the mfg. aids placed on the latter by an industrial robot or by hand. The retaining force is obtained without external operating elements and without external energy sources. The retaining force is reduced before removal of the mfg. sides, e.g. via a magnetic field device within the support base. ADVANTAGE - Mfg. aids can be retained in any  required position.
Patent DE-4025337-A1 (DE)
Title: Board game - has panel with ether magnetic elements or optical display devices
Inventor: GRUENEWALD UWE
IPC: A63F3/02
Filed: 1990-08-10
Abstract: A board game has a panel (1) with a surface (1b) that is of lightly magnetised material. Located on the panel are game elements (2) that are either of a magnetic material or a non-magnetic material with a magnetic foil. Symbols are formed on the surface. The elements may be moved over the surface freely. Elements may be handled by a hand-held magnetic probe. An alternative form can have a playing panel that consits of LCD elements coupled to a signal generator and with a touch input foil for element selection. USE/ADVANTAGE - As board game for 2 people.
Patent DE-4025466-A1 (DE)
Title: RF transmitter-receiver for mobile telecommunication system - has signals processed via pin diode unit to improve sensitivity and power
Inventor: KANG WON-CHUL
IPC: H04B1/44
Filed: 1990-08-10
Abstract: The radio frequency or high frequency transmitter-receiver has the aerial (15) coupled to a Pin-diode switch (10). The switch connects with a receiving low noise amplifier (11) with filtering (13) to provide the required band pass characteristice. Signals for transmission (T2) are filtered (14) and  amplified (12) to provide the radio signal. Thee pin-diode arrangement provides isolation between the channels and improves a the receiver sensitivity. ADVANTAGE - Improved sensitivity and increased transmission power.
Patent DE-4032979-A1 (DE)
Title: Grinding disc - which is number of blocks secured to concrete core by radial bolts for simple mfg.
Inventor: BACIC DAN D
IPC: B24D18/00
Filed: 1990-10-17
Abstract: The grinding disc such as for finishing glass plates or grinding wood, has a number of radial bolts each with a shaft (18) and head (16) with a mounting nut (34). Each grinding block has at least one bolt opening (14) running radially inwards through it with a seating either for the bolt head (16) or nut with a passage (20) for the bolt shaft (18). Reinforcements (24,26) for the concrete core work together with either the bolt nut or head to hold the grinding block against the core periphery.  When all the grinding blocks have been assembled round the core, held and clamped in place by their bolts, a significant amt. of the centrifugal force is countered. ADVANTAGE - The grinder assembly can be produced more rapidly than conventional units, with an improved grinding quality and faster exchange of worn sections.
Patent DE-4100580-A1 (DE)
Title: Hydraulic servo-brake unit - has two=part reaction section, for initial and complete brake force transmission
Inventor: MAEHARA TOSHIFUMI
IPC: B60T13/14
Filed: 1991-01-10
Abstract: The unit is located between brake pedal and main cylinder, and has a reaction section to transmit a reaction force to the pedal. A control valve reacts to a movement of the section to feed pressure fluid from a source to the cylinder. An intensifier chamber is connected to the valve via a pressure chamber. Hydraulic pressure from that chamber actuates an intensifier piston. The reaction section (50) is divided into two pressure take-up sub sections (53,54) to take up the reaction force. In initial stages of braking, one subsection along transmits the reaction force to the brake pedal (56). When the pedal is depressed past a certain distance the after subsection together with the first one, transmits the complete reaction force. USE - Brake servo unit in vehicle.