baber/WOPTO huggingface dataset:
Patent DE-4000509-A1 (DE)
Title: Treatment of waste liq. rich in ammonia - by neutralisation with strong acid and concentrating under reduced pressure to produce colourless, almost odourless slurry
Inventor: THIELE DIETRICH DR
IPC: C02F1/04
Filed: 1990-01-10
Abstract: In the parent patent waste liqs. rich in NH3 are brought at laeast to neutrality, pref. to pH 5.5-6.5, by addn. of strong acids. In this additive the liquids are waste water or drainage water of any kind, e.g. liq. manure, draining water from waste pumps, waste water from coking plants or chemical industry, or rinsing water from denitrification in power plants. Pref. the pH is adjusted by addn. of H2SO4, or H3PO4, and the liq. is then conc., pref. under reduced pressure, and esp. to dryness. An antifoam and an agent retarding incrustation may be added before concentrating. In an example, 3 L of a drainage water from a waste dump was brought from pH 9.25 to 6.80 by addn. of 100 ml or 20% H2SO4, and was conc. to 1/6 of the vol. The concentrate was a free-flowing crystal slurry, which was colourless, clear, and almost odourless, and could be further purified in a sewage plant. The condensate had following properties pH 9.35 vol. 2480 ml; NH3 content 0.86 g/l (12.5 g/l); salt content - (70 g/l); chemical O2 demand 0.376 g/l (24.2 g/l); nitrate content 0.124 g/l (0); where the figures in brackets are for the initial drainage water.
Patent DE-4003203-A1 (DE)
Inventor: RAUSCHER SIGURD ING
IPC: A01D80/00
Filed: 1990-02-03
Abstract: Agricultural harvesting machine with a feeler-wheel and supporting-wheel device (1), in which there is attached to each wheel axle a supporting frame (7), on which two feeler wheels (5,6) succeeding one another in the working direction (10) are mounted individually on pivoting arms (12,13), of which one is oriented in the working direction (10) and one opposite to this and which are connected to one another with a take-up effect. <IMAGE>
Patent DE-4003993-A1 (DE)
Title: Electric weighing device for loose material - has weighing vessel beneath material feed supported centrally from weighing frame
Inventor: DROSTE HANS JOACHIM
IPC: G01G13/02
Filed: 1990-02-09
Abstract: The weighing device has a material feed (10) positioned above a weighing vessel (20), suspended from a weighing frame (40) via a weight detector (30), using a number of individual sensors (31) acting centrally on the weighing vessel (20). The material feed (10) has feed channels projecting into the weighing vessel (20) symmetrical to its central suspension point. Pref. the weighing vessel (20) is supported by a pendulum linkage or a cardan linkage and is cylindrically symmetrical, with its open bottom end sealed by a blocking plate supported centrally beneath the suspension print. ADVANTAGE - Allows automatic precise weighing.
Patent DE-4010062-A1 (DE)
Title: Oil cooling of piston - is for IC engine and involves annular groove in piston crown
Inventor: KOEHNERT HANS JUERGEN
IPC: F02F3/22
Filed: 1990-03-29
Abstract: The cooled piston is for an IC engine. The piston crown is separate from the piston skirt and the two parts are fastened together by the gudgeon pin. The piston crown is made from steel or cast iron and . has an annular groove formed in the surface which faces the piston skirt. The piston skirt has an annular groove which is aligned with the groove in the crown. These grooves form a passageway for the circulation of cooling oil. The cooling effect of the  oil is further increased by a ring of blind holes in the floor of the annular groove in the piston crown. These holes extend in the direction of the piston crown upper surface. USE - Cooling of pistons in IC engine.
Patent DE-4014436-A1 (DE)
Title: Air conditioning system for ambient temp. control - has an additional heat exchanger connected by capillary tubes
Inventor: HUBER PETER
IPC: F25B41/06
Filed: 1990-05-05
Abstract: An air-conditioning system is equipped with a refrigeration machine (3) which consists of a compressor (4), a condenser (5), an expansion valve (6) and an evaporator (7). A pipe (L7) which connects the compressor  (4) to the evaporator (7) is fitted with an additional heat exchanger (8) and in a position which is downstream from the expansion valve (6) from the point of view of the direction of flow of the refrigerant. There is a capillary tube (9) connected between the expansion valve (6) and the additional heat exchanger (8). The additional heat exchanger (8) cools the refrigerant delivered by the compressor (4). A second capillary tube (10) is connected between the heat exchanger (2) and the evaporator (7). USE - Air conditioning systems.
Patent DE-4016768-A1 (DE)
Title: Universal plug convertible from axial to angular insertion - allows use of single and multiple Euro socket adaptors with flat plugs in alternative positions
Inventor: TRAUTMANN GUENTER
IPC: H01R27/00
Filed: 1990-05-25
Abstract: The cable outlet (3) is pivotable about a jointed fixture (4) pref. assembled from two halves and pressed together in a holder (9) with a short pivot axis (10). The protective conductor contact (11) is brought in through the centre and rivetted to the contact plate (7). The plug pins are rivetted to current-carrying contacts (13) on either side, with partition walls (12) to prevent short-circuits. e The contacts are provided with screw threads throughout for cable connections and shielded by a spring-loaded flap when not in use. USE - In homes or offices with conventional Schuko sockets.
Patent DE-4017906-A1 (DE)
Inventor: BOCHTLER FRANZ
IPC: B29C65/74
Filed: 1990-06-02
Abstract: The invention relates to an apparatus for sealing and cutting or perforating a step-by-step moved web of thermoplastic material by means of, for example, two sealing bars arranged at a distance from each other and parallel to each other on a stationary sealing die as well as by two sealing bars (19b) which are secured on a sealing die which can be moved towards the stationary sealing bars and away and between which a gap is formed and which are in each case independently of each other under the action of a spring arrangement (34b) supported in the movable sealing die (30b), and there being band heaters (8d) on the working faces of the sealing bars (19b) and there being provided a spring-mounted clamping bar in each case on the outside of the movable sealing bars (19b). <IMAGE>
Patent DE-4018043-A1 (DE)
Inventor: HAAS RAINER VON DIPL ING
IPC: B23B51/04
Filed: 1990-06-06
Abstract: PCT No. PCT/DE91/00425 Sec. 371 Date Dec. 4, 1992 Sec. 102(e) Date Dec. 4, 1992 PCT Filed May 22, 1991 PCT Pub. No. WO91/18700 PCT Pub. Date Dec. 12, 1991.A drilling tool for drilling bores in solid metal, with a shank having at its front end several geometrically similar indexable inserts arranged at various radial distances and staggered with respect to each other by the same peripheral angle, whose working areas overlap, each of them having two equally long cutting edges, two of the respectively contiguous cutting edges inclined with respect to each other at an obtuse angle being simultaneously engaged, whereby the radial inner indexable insert extends slightly with one of its engaged cutting edges beyond the drill axis, at least one of the bisectors of the two pair set cutting edges of indexable inserts being inclined with respect to the longitudinal shank axis by an angle up to 25 DEG  m and at least one of the bisectors running at an angle differing from zero with respect to another bisector, so that the sum total differing from zero of the radial force component (FR) resulting from all engaged effective cutting edges and the corresponding sum of the horizontal force components (FH) form a general resultant (FRES) acting upon the cutting edges and which is oriented in the direction of the radially utmost indexable insert at an angle ( beta ) differing therefrom by maximum 45 DEG .
Patent DE-4021566-A1 (DE)
Inventor: RUECKERT HELMUT
IPC: F16D55/2265
Filed: 1990-07-06
Abstract: A retainer spring (2) for partly coated disc brakes with two opposite, V-shaped shanks (4, 6) which can be brought together by spring action, in which each of the shanks has a first wing (10, 8) and the ends of these wings of the springs can be engaged in a rear-cut recess (50) in the housing (40), while the opposite end of the wing (20, 26) supports the backplate of at least one brake pad (44).
Patent DE-4023103-A1 (DE)
Title: System for heating passenger compartment of omnibus - has warm air channels enclosed by ribbed device to form ribbed radiator delivering warm air to rear of plate heater
Inventor: SCHANZER HANS-PETER DIPL ING
IPC: B61D27/00
Filed: 1990-07-20
Abstract: The channel (10) carrying warm air to the passenger compartment (16) is enclosed by a ribbed device, thereby forming a ribbed radiator (9). Warm air from the ribbed radiator (9) flows into the space between it and a plate heater (7) so that the latter is heated from its rear side (13). The plate heater is provided on its rear side with ribs (14) which run in the direction of the ascending air flow. On the side facing the passenger compartment (16) the plate heater (7) has a cover (18). ADVANTAGE - Operational reliability is increased.
Patent DE-4029713-A1 (DE)
Title: Steel castings for low temp. use in sea water - has high yield strength and impact strength at low temp.
Inventor: VOLODIN VLADIMIR IVANOVITSH
IPC: C22C38/54
Filed: 1990-09-19
Abstract: High strength casting steel for low temp. work contains in wt.%: 0.08-0.13 C; 0.15-0.3 Si; 0.5-1.0 Mn; 0.4-0.7 Cr; 3-3.5 Ni; 1.3-1.9 Cu; 0.25-0.35 Mo; 0.02-0.06 V; 0.02-0.05 Ce; 0.02-0.05 Al; 0.005-0.05 Ca; 0.002-0.005 B; balance Fe. USE/ADVANTAGE - For producing heavy castings upto 200mm thick which can be used in statically, dynamically and cyclicly stressed constructions, esp. in sea water conditions at temps. down to -40 deg.C.. The steel does not succumb to H2 embrittlement, is cold weldable and has good resistance at low temps.. It also has good fatigue strength.
Patent DE-4030159-A1 (DE)
Title: Flow regulating valve with circular gap forming throttle -  has piston responding to pressure difference to control orifice under spring pressure
Inventor: ZAVISKA DALIBOR
IPC: G05D7/01
Filed: 1990-09-24
Abstract: A flow regulating valve has an inlet (10) and outlet (11) with a sliding piston (1) located in-between. The outer surface of the piston is sealed relative to the bore by an O-ring (3). Fluid passes through the centre of the piston and enters the outlet by passing across an annular seat formed by flexible material (9). As the pressure at the inlet increases the piston moves against an opposing spring and the flow path is reduced to maintain the flow constant as the pressure difference increases. ADVANTAGE - Can be simply mfd.
Patent DE-4031274-A1 (DE)
Title: Primary winding of miniature transformer -  gives high resistance against voltage fluctuations
Inventor: FRIEDRICH MANFRED
IPC: H01F27/28
Filed: 1990-10-04
Abstract: The primary winding (3) consisting of a coil of W turns of lacquered copper wire of dia. d.  It has a resistance R and gives an inductance In at voltage U and occupies volume V. While maintaining the values R, In, U and V, an increase of stability against voltage fluctuations is achieved by using a coil of 0.15 W to 0.25 W turns made of lacquered resistance wire of dia. 2d so that voltage U, resistance R and inductance In remain constant.  The increase in stability is achieved by using the larger dia. wire and thicker insulation.  An increase in volume V is avoided by using resistance wire. USE/ADVANTAGE - Primary winding of miniature transformer with high resistance against voltage fluctuation.
Patent DE-4036241-A1 (DE)
Title: Measuring and evaluating physical data of vehicle model - using microprocessor with program and data memory, connected via A=D converters to sensors of different parameters
Inventor: GOLOMBEK JOERG
IPC: G01M9/06
Filed: 1990-11-14
Abstract: An arrangement for measuring and evaluating the physical data of a vehicle model in operation contains a microprocessor connected to sensors built into the model and connected to a program and data memory, and an interface driver. The program and data memory has an emergency power supply which can be switched on. The measured physical parameters are converted into electrical signals which are digitised and fed to the microprocessor which places the values into the data memory. USE/ADVANTAGE - E.g. for use with models of aircraft by aircraft manufacturers. Enables number of different data items to be measured and recorded during the operation of aircraft model.
Patent DE-4037660-A1 (DE)
Title: Baby orthosis - comprises rigid plastics plate on which long body support is fixed as to position via holders
IPC: A61F5/01
Filed: 1990-11-27
Abstract: The orthosis (1) has an main component a skin-friendly, easily cleaned, rectangular plastics plate. On the plate are two body supports (5) which can be differently spaced apart, and fixed as to position. These body supports are made of a slightly compressible plastics, which like the main plate are skin-friendly and easy to clean. They are thin walled with a low weight. To fix the body supports on the plate holders (7) are provided on their long sides turned away from each other, with counter holders provided on the main plate. The holders (7) consist of fixation angles screwed on to the body supports by screws, and the counter holders (8) are long holes in the plate (4) with nuts located in them. USE - In physiotherapy, for the correction of hip dysplasia and hip luxation in tiny babies.
Patent DE-4038698-A1 (DE)
Title: Measurement arrangement, esp. for machine tool - has sensor with transducers for mutually perpendicular directions and guide arrangement enabling measurement in plane
Inventor: EISCHER ALEXANDER DIPL ING
IPC: G01B5/004
Filed: 1990-12-05
Abstract: A measurement arrangement contains a measurement sensor (2) and a device for acquiring and indicating the measurement values. The measurement sensor is mounted to be movable in two mutually perpendicular directions along corresp. guide arrangements (5-9) and has a measurement transducer (3, 4) for both directions. The sensor is mounted on a guide rod (7) whose free end interacts with the first transducer (3) and is mounted to be transversely movable in or on a second guide rod (9) which interacts with the second transducer (4). USE/ADVANTAGE - Esp. for measuring machine tools, enables measurement in plane rather than only in line and during operation rather than only during adjustment.
Patent DE-4101248-A1 (DE)
Title: Flow control valve used in vacuum handling - allows regulation of air in by=pass flow route
Inventor: SCHMALZ KURT DR
IPC: B65G47/91
Filed: 1991-01-17
Abstract: The flow control valve is used in a suction grab system. At a predetermined pressure differential a moving valve component (14) in a housing (2) is pressed against a valve seat (12) to close the valve (1). A flow route with a much greater flow resistance than that of the open valve bypasses the sealed area between the valve component (14) and valve seat (12). The amount of air in the bypass flow route can be regulated. USE/ADVANTAGE - One valve suffices for suction grabs of varying size and suction time is reduced to a min.
Patent DE-4101776-A1 (DE)
Title: Absolute position detection system for magnetic levitation train - uses ratio between calculated amplitude values for induced voltages
Inventor: HOCHLEITNER JOSEF DIPL ING
IPC: B60L13/06
Filed: 1991-01-22
Abstract: The absolute position detection system uses the calculated amplitude values of the induced voltages (Up1,Up2) for the switched track sections (2,4). The ratio of the calculated amplitudes is compared with a preset amplitude ratio corresponding to the point at which the centre of the train (14) passes the interface between successive track sections (2,4). Pref. the preset amplitude ratio has a value of 1, a half or 2 dependent on the switching mode for the successive track sections.
Patent DE-4104215-A1 (DE)
Title: Heavy-current electrical contact for printed circuit board - is mfd. by rolling of single stamped workpiece to form socket on end of resilient helix
Inventor: HAEUSSER WERNER ING GRAD
IPC: H01R13/115
Filed: 1991-02-12
Abstract: A flexible connection (3) is fashioned between a forward plug pin or contact socket (2) and a rearward termination (4) for the conductive tracks of the printed circuit. The device is stamped from e.g. brass or Cu strip, previously Ni-plated overall and subsequently coated in the contact areas with noble metal. It is rolled so that spring blades (9) constitute the socket (2), while thinner strips (11) of the metal are coiled into a helix for floating in a contact chamber. ADVANTAGE - A simple one-piece contact can be mass-produced cheaply without expensive stress-relief tools.
Patent DE-4105144-A1 (DE)
Title: Six-piston radial pump - is driven by vehicle IC engine circuit providing power to servo steering, camshaft adjustment and wheel brakes
Inventor: KRINES HANS-GEBHARD
IPC: B60K25/00
Filed: 1991-02-20
Abstract: The hydraulic circuit has a six-piston radial pump (1) driven by a vehicle combustion engine. Four of the pistons (2) are connected to a circuit (4) which provides hydraulic power to a servo assisted steering system (5). A camshaft adjuster (6) is arranged in series, and two of the pistons (3) are connected to a circuit (7) supplying the hydraulic booster (8) of a braking system (9). ADVANTAGE - Vehicle hydraulic unit giving savings in cost and space requirements.
Patent DE-4105963-A1 (DE)
Title: Simulator for road vehicle driving - uses video images obtained with real vehicle in which control computer access video data at rate releasing to vehicle simulator command
Inventor: FOERST REINER DR ING
IPC: H04N7/18
Filed: 1991-02-26
Abstract: The simulator uses video information obtained from video cameras mounted on a vehicle that is driven around a selected park. The cameras (3a-3e) are mounted on carriages (4a-4e) and are moved on a slide way (2) by a stepping motor with a belt transmission (7). The simulator has computer with inputs representing the accelerator pedal, brake pedal, clutch and gear change lever. Speed and steering angle data are held in memory and is used to access the stored video information to provide a realistic representation on a monitor. ADVANTAGE - Matches speed of video information to commands.
Patent DE-4108820-A1 (DE)
Inventor: REUTER KARL DR
IPC: G01N30/54
Filed: 1991-03-18
Abstract: The invention discloses a process and a device for separating a mixture of substances by sorption of the components of the mixture on two different sorption agents with independently adjustable sorption properties. The process is characterized in that the mixture of interest is introduced into the separating chamber (3) between two surfaces of the sorption agents (1, 2). A gap medium in which the components of the mixture are soluble and/or dispersible and/or in which they can be evaporated is located between the facing surfaces of the sorption agents (1, 2). Of the three different phases consisting of surfaces and gap medium, at least two move in different directions at an essentially constant distance apart, and the separated components of the mixture located on the sorption means are extracted after passing through the separating section.
Patent DE-4114079-A1 (DE)
Title: Position sensor e.g. for speed or angle measurement of rotating shaft - uses soft iron, elongated core surround by coil to detect ferromagnetic sections e.g. teeth of gear wheel
Inventor: ZIMMER RAINER DIPL ING
IPC: G01B7/00
Filed: 1991-04-30
Abstract: The sensor element also has at least one permanent magnet (1,2) assigned to it, the effect of which on the magnet core (3) is reduced with the passing by of one of the ferromagnetic effective part sections (10). The permanent magnet (1,2) and the magnet core (3) with the passing by of the ferromagnetic effective part sections (10) are arranged parallel to these. The sensor element is operated with alternating current and the alteration of inductance is evaluated. A direct current is superimposed on the alternating current for the setting of the working point. USE/ADVANTAGE - System can deal with rotating units, e.g. gear wheels or linear units, e.g. toothed rack or perforated rod as movement transmitted. Increased effect of teeth on stray field of permanent magnet; adjustment of sensor element is made easier.
Patent DE-4114430-A1 (DE)
Title: Cross-wound bobbin removal
Inventor: BUNGTER HELMUT
IPC: B65H67/06
Filed: 1991-05-03
Abstract: At a cross winder, the doffed bobbins (6) are positioned packed closely together on the laying belt (4) through a controlled and cyclic relative movement of the transfer motion of the doffer (3) and the carrier belt (4). Pref. all the bobbins (6) are laid at a single and fixed transfer point (10) after each action to position a bobbin (6) by moving the laying belt (4) by a step of a bobbin width. The bobbins (6) are laid at the starting end (11) of the carrier belt (4) away from the unloading end (14). The bobbins (6) are given (5) an identity to show their origin, at the doffer (3), during doffing and laying, or they can be identified (5) during transfer to the belt. As the carrier belt (4) is cleared, remaining bobbins (6) are returned in steps to the transfer point (10). A transfer unit (12) moves the bobbin (6) from the doffer (3) to the carrier belt (4). The transfer unit (12) has a grip which takes the bobbin (6) from the doffer (3) to be placed on the carrier belt (4) at the transfer point (10) independently of the programme.
Patent DE-4118788-A1 (DE)
Title: Electric pump for handling toxic substances - has sealed case between pump unit and motor to prevent leakage to atmosphere and flange case and split tube electromagnetic coupling
Inventor: LEHMANN WILFRIED DR ING
IPC: F04D13/02
Filed: 1991-06-07
Abstract: Pump aggregate which is medium-tight to atmosphere comrising a pump unit, a flange case and a split tube electromagnetic coupling (2, 3) in which the pump (1) is connected to the housing (6) of the motor by means of a flange case (5) made as a pressure-tight housing. A lip seal (7) is provided between the inner cavity of the flange and the inner cavity of the motor housing which prevents the ingress of the pump medium into the motor interior (8). USE/ADVANTAGE - Pump for handling toxic, explosive or other substances harmful to the environment which ensures that should a seal fail, the medium does not escape to atmosphere.
Patent DE-4119452-A1 (DE)
Title: Phase locked loop circuit with count phase discriminator - uses output pulse ratio to control regulating voltage for voltage-controlled oscillator
Inventor: SCHOLZ WERNER DIPL ING
IPC: H03L7/10
Filed: 1991-06-13
Abstract: The circuit has a count phase discriminator allowing pulses (B) obtained from the input signal (A) to be coupled to 2 outputs (E.F) in dependence on the phase position relative to the oscillation (C) of a voltage - controlled oscillator (1), with a regulating voltage (UR) obtained from the ratio of the pulse counts at the 2 outputs (E.F). A reversible counter (16) recives the pulses from the 2 outputs (E.F) at respective inputs via frequency dividers (18, 19), the obtained count used to control the regulating voltage via a D/A converter (17). One or both the division factors of the frequency dividers is variable. USE - For generating bit clock signal for decoding or regeneration of bit sequence in DA recorder.