baber/WOPTO huggingface dataset:
Patent DE-3901823-A1 (DE)
Title: Vacuum switching tube
Inventor: PECHE GERHARD DR
IPC: H01H1/54
Filed: 1989-01-21
Abstract: Previously known vacuum switching tubes having a fixed contact and a contact which can move by means of a spring bellows require a large contact force in the connection phase since the contacts must not open in the event of a short-circuit connection current, in order to avoid the contact surface welding. Until now, this increase in contact pressure which was necessary only for the short-circuit connection current was applied permanently during the connection time by the drive of the vacuum power circuit breaker. In the case of a vacuum switching tube 1 having a fixed contact 2 and a contact 3, which can be moved by means of a spring bellows 14 in an evacuated switching chamber 8, both contacts 2 and 3 being arranged on the same side on the mounting plate 10 of the switching chamber 8, a narrow current loop is formed by the contact 3 which moves in a straight line and makes contact on the inside of the double-bent fixed contact 2 by means of a rotary movement, the magnetic current forces of which current loop produce the necessary contact pressure even in the case of very severe short-circuit connection currents, so that the closed contacts cannot lift off and welding of the contact surface is prevented. Vacuum switching tubes for vacuum power circuit breakers in the medium-voltage range up to 10 kV for conventional and compressed-gas-insulated medium-voltage switching installations. <IMAGE>
Patent DE-3901893-A1 (DE)
Title: Concrete vibrator
Inventor: YOSHIDA KENJI
IPC: B06B1/16
Filed: 1989-01-23
Abstract: A concrete vibrator is provided in which a semiconductor (solid-state) motor without a sensor is used as the drive. The semiconductor motor without a sensor has an arrangement such that the rotary position of the permanent magnet rotor is determined on the basis of a voltage which is generated by three-phase stator windings, that is to say a voltage which is induced in accordance with the distribution of the magnetic flux in the gap and which varies its frequency only with the rotational speed without there being a need for a Hall element which is easily damaged by vibrations and heat, that is to say has only a very low robustness (toughness, resistance). Moreover, the semiconductor motor without a sensor is arranged in such a way that the power is supplied to the stator winding under the control of a semiconductor invertor which, for its part, is controlled by pulse-width modulation or pulse-amplitude modulation.
Patent DE-3904166-A1 (DE)
Title: Planetary roll for a planetary rolling mill
Inventor: FIGGE DIETER DIPL ING
IPC: B21B13/20
Filed: 1989-02-11
Abstract: In planetary rolling mills, high shock loads occur each time the work rolls strike the rolling stock. This high and frequent shock loading leads to the premature failure of the rolling bearings and hence to down time and expenditure for repairs. The object of the invention is to reduce the down times and the expenditure for repairs on a planetary rolling mill by increasing the service life of the bearings. This object is achieved by virtue of the fact that the bearing clearance of the work rolls (3) is greater than the bearing clearance of the intermediate rolls (4) and that the action of the force of the spring assemblies (5) takes effect in the centre of the work-roll bearings (10). <IMAGE>
Patent DE-3905073-A1 (DE)
Inventor: SCHNEIDER FRANZ DIPL ING
IPC: B21D43/05
Filed: 1989-02-18
Abstract: The transfer device makes possible different motional sequences of the holding means (40) for the sheet-metal parts to be moved through the metal-forming machine tool. The holding means (40) are secured on travelling carriages (24, 25). The travelling carriages (24, 25) are cam-guided, travelling carriage (25) performing a transfer motion (82) out of a processing stage (86) into an idle stage (88), taking a sheet-metal part along with it. The return motion (84) is interrupted in an intermediate position (89) during the forming process performed on the sheet-metal parts. Travelling carriage (24) executes a transfer motion (83) out of the idle stage (88) into a processing stage (87) and a return motion (85) interrupted temporarily in an intermediate stage (89). The low-mass construction using travelling carriages (24, 25) makes possible high accelerations in the motions. The use of intermediate deposition points (17) in the idle stages (88) considerably shortens the transfer motions. 
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Patent DE-3913396-A1 (DE)
Title: Step end measure (gauge block, block gauge)
Inventor: KAUFMANN SIGFRID DR SC TECHN
IPC: G01B1/00
Filed: 1989-04-24
Abstract: The invention relates to a test piece for coordinate-measuring machines (devices), machine tools and measurement robots in the form of a step end measure. Its application is recommended, in particular, for checking relatively large measuring devices (length of the step end measure >/= 500 mm). The aim of the invention is principally to avoid temperature-dependent changes in dimension of the test piece. The object of the invention is to develop a step end measure for large lengths having a high inherent stiffness, a length temperature coefficient of  alpha  = 0.10<-6>K<-1>, a satisfactory robustness in conjunction with a comparatively low mass, and a capacity for the measuring surfaces to be touched virtually on all sides. The basic member of the end measure according to the invention is made from plastic reinforced with carbon and/or aramid fibres in a plurality of parts and in the form of an open support structure. The position of the plastic individual elements of the support relative to one another is determined by plate-shaped carriers in the centre of which touch (sensing) elements for representing the measuring points/measuring surfaces are mounted. <IMAGE>
Patent DE-3915094-A1 (DE)
Inventor: KORB GERHARD DIPL ING
IPC: B01J31/02
Filed: 1989-05-09
Abstract: Process for the preparation of 2-mercapto-4-methyl-1,3-thiazol-5- ylacetic acid or its alkyl esters of the formula I <IMAGE>
Patent DE-3918969-A1 (DE)
Inventor: JUDGE JOHN L
IPC: H04N17/02
Filed: 1989-06-09
Abstract: A multistandard vectorscope providing vector displays of two or more colour video standards in a single vectorscope utilizes a DC controlled phase shifter 20 and a demodulator 16 that are not frequency sensitive along with a switchable oscillator 24 for switching between multiple video standards. <IMAGE>
Patent DE-3919214-A1 (DE)
Title: New acyl:aminomethyl-pyrimido-thiazine derivs. - useful as enzyme inhibitors in antimalarial medicaments
Inventor: PIEPER HELMUT DIPL CHEM DR
IPC: C07D513/04
Filed: 1989-06-13
Abstract: 6-Acylaminomethyl-2-amino-4-hydroxy pyrimido(4,5-6)thiazines of formula (I) are new,  R1 and R2 = H or 1-3 Alkyl, or CR1R2 = 3-7C cycloalkylidene; R3 = 2-4C alkanoyl, 1-4C alkylsulphonyl, C0Ar or S02Ar; Ar = phenyl opt substd by 1 or 2 or 1-3C alkyl, N02, F, Cl and Br. USE - (I) are dihydroneopterin aldolase and/or hydroxymethyl dihydropterin pyrophosphokinase inhibitors useful as components of antimalarial medicaments also contg dihydrofolate reductase and/or dihydropteroate synthase inhibitors.
Patent DE-3920030-A1 (DE)
Title: Hydraulic energy-storage system
Inventor: BREISCH HARALD
IPC: F15B1/24
Filed: 1989-06-20
Abstract: In a hydraulic energy-storage system for machines, in particular motor vehicles, a gas accumulator (9) is arranged as a piston accumulator in a gas reservoir (10). It is thus possible to design the cylinder (91) of the piston accumulator (9) without taking into account the pressure of the accumulator, because the reservoir space (12) in which the same gas pressure prevails is arranged around the cylinder. As a result of a very large opening (95) in the base of the cylinder (91), no additional losses as a result of choking occur during rapid unloading or charging as in hydraulic energy-storage systems with separately set-up gas reservoirs. The gas accumulator (9), which is constructed as a piston accumulator, can be used as both a high-pressure (8) and low-pressure accumulator (7). <IMAGE>
Patent DE-3920501-A1 (DE)
Title: Felt sole for indoor shoes - has sprayed plastics tread sole for improved wear and weather resistance
Inventor: HIRSCH BERNADETTE
IPC: A43B3/10
Filed: 1989-06-22
Abstract: The sole (2) which is connected to the upper (1) is made from flet or felt-like material and has an additional tread sole (3) of plastics. The conventional shoe upper including the welt is placed with a blank of felt material of suitable size for the sole into a machine mould. Pressure and heat are applied to shape the felt material in the mould round the welt and round the area of the upper adjoining the welt. Without opening the mould, a conventional plastics used for shoe soles is sprayed onto the surface of the felt remote from the welt so that after cooling an additional fixed tread sole is attached to the felt. Once the shoe is removed from the machine mould, the felt sole is fixed to the shoe upper pref. by stitching. USE/ADVANTAGE - The sole of a shoe is made from a breathable material with good heat-retaining properties but is wear-resistant and weather- proof.
Patent DE-3926628-A1 (DE)
Title: Method for producing a turn-on enable signal
Inventor: FROESCH RUDOLF
IPC: H02M7/162
Filed: 1989-08-11
Abstract: In order that the input voltage and output voltage (U1, U2; U5) of a converter (5) having standardised appliances (3, 4; 6) can be measured and evaluation electronics (19) can be made available at low potential, a control error signal (U0) and, except during a calibration process, an enable threshold value signal (UF) are used in the comparison of this input voltage and output voltage. For this purpose, input AC voltages (U2, U1), which are detected using AC voltage measurement transformers (3, 4), are fed via rectifiers (12, 11) and a multiplexer (15), which is controlled by a microprocessor (19), to a comparator (17) and are compared there with a converter DC voltage signal (U6) which has been detected by a DC measurement converter (6). Before the comparison, the control error signal (U0) and the enable threshold value signal (UF) are added to this converter DC voltage signal (U6) in an adder (16). A turn-on enable signal (F) is produced when the voltage on an individually switching thyristor (T1-T6) of the converter (5) is at least equal to an enable threshold value voltage. If a load current signal (i8) exceeds a current limit value (iGR), which can be predetermined, after a thyristor has been turned on (S20), the enable threshold value signal (UF) is suppressed and the control error signal (U0) is updated and stored in the microprocessor (19). <IMAGE>
Patent DE-3927931-A1 (DE)
Inventor: MOHRS KLAUS DIPL CHEM DR
IPC: A61P43/00
Filed: 1989-08-24
Abstract: Disubstituted (quinolin-2-ylmethoxy)phenylacetic acid derivatives can be prepared by reduction of correspondingly disubstituted ketoesters by means of Grignard reagents and, for the preparation of the thio compounds, by subsequent reaction with thiols. The compounds can be used as active substances in medicaments.
Patent DE-3928786-A1 (DE)
Title: Sprung backrest cushion for vehicle seat - has plane spring unit within cushion overlay with brackets to attache to metal seat frame
IPC: A47C7/24
Filed: 1989-08-29
Abstract: The backrest consists of a metal frame (2) and a cushion (3) of fibre composite material or foam. A plane spring element (1) is integrated into the cushion overlay, and brackets (4) extend from the spring through the overlay to chip onto a cross-tube (5) of the frame at the height of the pivoting axis of the backrest. The top part of the cushion is shaped to fit over the rim of the frame. USE/ADVANTAGE - Spring backrest of vehicle seat is mfd. using few parts and allows simple assembly.
Patent DE-3929044-A1 (DE)
Title: Oil separator - to separate oil from oil-water mixts. in inclined-plate separator, for removal of solid material deposits
Inventor: WINKELHORST STEPHAN DIPL ING
IPC: B01D17/02
Filed: 1989-09-01
Abstract: Separator comprises container with an upper inlet and having vertical vent pipes at its upper and lower ends. Inclined plates divide the container into deposition chambers, and a sediment removal system serving all of these chambers is in the base of the container. An open space free of dividing plates is left in the upper part of the container, and an inlet pipe may be in the space between each pair of dividing plates. A heating device may be at the upper end of the container. A container inclined at 45 deg. and fitted with parallel longitudinal dividing plates may be used. Vent(s) is in the form of a telescopic pipe, and the vent for the lighter phase is connected to the upper part of a heated evaporator vessel having rising lower outlet- and upper vent-pipes. A system of valves allows oil from the base of the separator to be recirculated to the oil inlet pipe. USE/ADVANTAGE - Used for sepg. oil from aq. liqs., as is required e.g. in the cleaning of water used for washing machine parts which have been treated in an oil bath. The risk of the clogging of the liq. passages by solid material is removed, and device is simple.
Patent DE-3940860-A1 (DE)
Inventor: LENZ KUNO
IPC: H04N5/04
Filed: 1989-12-11
Abstract: A circuit for detecting a square wave television signal in a television receiver includes an oscillator for generating the square wave signal and a phase locked loop (PLL) for synchronizing the square wave signal with the syn pulses of the televsion receiver. The circuit also includes an integrator for switching the output signal of the PLL to a frequency stable square wave signal when the syn pulses are absent and a Schmitt trigger for closing the PPL when a threshold value is reached. With the invention, the syn signals are sensed and a first switchable constant current source increases the output voltage of the integrator for a predetermined period of time when syn pulses are present during the first half of the square wave signal and discharges the integrator when syn signals are absent from the second half of the square wave signal.
Patent DE-4001220-A1 (DE)
Title: Microwave chamber - has internal atmosphere regulated by through-flow device provided with inlet and outlet gas connections in walls of chamber
Inventor: SCHULZE REINHARD
IPC: H05B6/80
Filed: 1990-01-17
Abstract: The microwave chamber has a through-flow device (DFL) provided with a gas connection (GL) in the region of two opposing chamber walls (W2,W3) and located each side of the door-opening chamber wall (W1). A second gas connection (G2) is located in the region of the chamber wall opposite the door opening. The second gas connection carries gas in the opposite direction to the first. - The first gas connection is the inlet and the second, the outlet. The second gas connection has a suction fan in the region of the chamber wall. Two gas connections operating in parallel are arranged in one chamber wall. (The through-flow device is used to control the atmosphere inside the chamber). The magnetron forms a unit of its own. (6pp Dwg.No.1/3)
Patent DE-4005228-A1 (DE)
Inventor: RENTSCHLER GUENTER
IPC: A61B17/22
Filed: 1990-02-20
Abstract: A lithotripsy installation with a shock wave generator (4) is described, which has a coupling cushion (34) which can be shaped to the body of the patient and can be filled with water as acoustic coupling medium between the body of the patient and the shock wave generator (4). The water is degassed in order to ensure an efficient shockwave therapy and is continuously conditioned in order to prevent slime formation, for example as a result of algae growth, and the risk of transmission of germs, this conditioning being effected by a disinfection arrangement (1) (Figure). 
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Patent DE-4010807-A1 (DE)
Title: Plastics connector for securing broom handle - is in two parts so that handle end can be turned through 180 deg. to alter inclination
Inventor: PEETZ RAINER
IPC: A46B5/00
Filed: 1990-04-04
Abstract: The plastics moulded connector consists of a captive inner section (3) screwed onto the brush handle (5) and an outer section (4) which is secured to the brush or broom head by three screws.  Two lugs on the inner section fit into guide slots in the outer member so that the inner section can be rotated into either one of two positions at 180 deg. As the axis of the brush handle is inclined to the axis of rotation of the inner section, the handle can be inclined either by say 45 deg. or 65 deg. depending on the type of brush. ADVANTAGE - Handle can be inclined at correct ergonomic angle for brush type. Production and fitting costs are low.
Patent DE-4012001-A1 (DE)
Title: Recording interference fields using large aperture - blends in origin of reference beam in principal plane of lens or nearby
Inventor: STEINBICHLER HANS DR
IPC: G03H1/04
Filed: 1990-04-12
Abstract: An object (4) with a shiny and/or diffusely reflective surface is irradiated by a coherent beam, pref. of light of a certain frequency. The reflected radiation is imaged at the image plane (6) where a sensor (3) is found. A reference beam (7) at the same frequency and a defined phase is imposed at the sensor so that an interference field appears. The radiation (11) reflected from the object is imaged through a lens (12) to achieve a constant line density of the interference field over the complete surface of the sensor. The source (13) of this reference beam is blended in in the principal plane of the lens or near it. ADVANTAGE - Approaches constant line density of interference field.
Patent DE-4014534-A1 (DE)
Title: Solar cell load regulator - has variable pulse control to maintain charge condition
Inventor: SCHWARZ PETER
IPC: H02J7/35
Filed: 1990-05-07
Abstract: The solar cell powered charging unit has an output stage that provides a voltage (Uo) that can be greater or less than the input (Ui). A switch (S) is closed to allow energy to flow into the battery via an inductance (L). When opened energy flows to a diode (D) and capacitor (C). The switch is operated by pulses generated by a controller and the mark to space ratio is dependent upon the input and output voltages and the temperature and current. The operating point provides for maximum power of the solar cell module. ADVANTAGE - Provides optimum power condition.
Patent DE-4017388-A1 (DE)
Title: Automatic system for improving performance of biological gas filters - where filter medium moisture content is controlled by continuously measuring and adjusting bulk density and temp.
Inventor: NEUMAYER WALTER
IPC: B01D53/85
Filed: 1990-05-30
Abstract: Procedure restricts the effect of negative operating conditions, weather etc. on a biological gas filter. Moisture content of the filter medium is supervised by continuously measuring its bulk density and is controlled by switching on or off a gas flow moistening device (1), a filtrate spray system (2), or a bypass (3) for directly aspirating a clean un-cooled gas flow, if the bulk density reaches a limiting value. Auxiliary control of the moisture content is achieved by a system which measures the temp. difference between the filter medium and the gas stream. If the filter medium temp. becomes undesirably high, the gas flow moistening device is switched on, and if it becomes undesirably low an un-cooled gas stream is directly aspirated. USE/ADVANTAGE - Used in extract systems for the treatment of gases before discharging to the atmos.. Biological filters are used for reliably breaking down complex odour emissions in the gas stream. Maintains optimum moisture content in the filter medium, since too low a moisture content leads to reduction in mechanical and biological filtration effect and to the emission of odours, while too high a moisture content leads to rotting and solidification of the filter medium.
Patent DE-4017554-A1 (DE)
Title: Sound reception device for percussion drum - comprises microphone supported at free end of holder within drum interior
Inventor: RINSKI WERNER
IPC: H04R1/08
Filed: 1990-05-31
Abstract: The device comprises a hollow holder (4) supporting a microphone (7), fitted through the wall (2) of the drum (1), so that the microphone (7) lies within the drum interior. Pref. the holder (4) comprises a sleeve (5) permanently secured to the wall of the drum and a relatively sliding shaft (6), to which the microphone (7) is attached at its free end. The shaft pref. incorporates a resonance opening (9), or a resonance groove. USE/ADVANTAGE - For amplifying or recording drum. Received drum signal is less influenced by surrounding sound.
Patent DE-4018667-A1 (DE)
Title: Electronic division circuit using pulse circuit - contg. two flip=flops and six and=circuits as well as AND=circuit and inverter
Inventor: MERKLE PAUL
IPC: G06F7/491
Filed: 1990-06-11
Abstract: The divisor is pulsed completely from right to left in a shift register. The dividend is then pulsed into another shift register via a further shift register but only so far that a low potential appears at the output of an inverting circuit. The dividing process is started by controlling one input by the pulse frequency and the other input by a high pulse. The divisor is subtracted from a first component of the dividend until the inverting circuit has a high potential at its output. The first integer of the quotient appears in 5211 code at the output of a circuit (7). ADVANTAGE - Contains no unnecessary gate circuits and hence has no dual pulse limits.
Patent DE-4019606-A1 (DE)
Title: Holder for sheets or posters - consists of vertical baseplate to top of which is fixed profiled holder with clamping arm
IPC: A47B97/02
Filed: 1990-06-20
Abstract: The holder for sheets, posters,etc consists of a vertical baseplate (10) to the top end of which is attached a profiled holder (16) with a clamping-arm (14) pressing the sheet against the baseplate (10). The profiled holder (16) can be moved on its axis (18) extending in its lengthwise direction between an operating and non-operating position in which the bottom end (13) of the clamping arm (14) is spaced apart from the baseplate (10). The downward-opening side (39) of the profiled holder (16) has an arm (38) running crosswise to the clamping-arm (14) to which is attached a triangular-sectioned support (44) on the top (15) of the baseplate (10). USE/ADVANTAGE - The sheet or poster can easily be inserted into, and removed from, the holder.
Patent DE-4021695-A1 (DE)
Title: False twister yarn feed tube - has structured air jets to carry yarn along long tubes with low friction
Inventor: BARTKOWIAK KLAUS DIPL ING
IPC: B65H51/16
Filed: 1990-07-07
Abstract: The tube assembly to feed and lay a yarn at the heater of a false twister appts., has compressed air jets aligned on a secant to a tangent with one direction component directed along the tube feed direction. One air stream within the tube rotates in a spiral. ADVANTAGE - The yarn is advanced along the whole length of the tube, and not just at the entry section, preventing the development of major friction forces so that the tube can be very long with a strong curvature.