baber/WOPTO huggingface dataset:
Patent DE-4041893-A1 (DE)
Title: Ophthalmic surgical instrument with cold light UV laser - has laser pulse homogeniser by two cylindrical lenses with optical axes intersecting at 90 deg.
Inventor: DARDENNE MICHAEL ULRICH PROF D
IPC: A61F9/01
Filed: 1990-12-27
Abstract: A continuous alteration of energy distribution of the laser beam (16) results radially from the centre point axis (17) to the external flank of the beam, and the emanating laser beam is reflected with the desired radial absorption profile on the cornea, by a liq. tray (5), transparent to UV radiation, with a cylindrical lens type optical part (4), which contains a liq. partly absorbing the laser radiation, and its rotational axis coincides with the centre point axis of the laser radiation. Two cylindrical lenses with their optical axes crossing at 90 deg. are used for homogenising the laser pulses so that in a vertical quadratic cross section of 20 x 20 mm. An expansion optic (3) is provided, in which the 20 x 20 mm quadratic laser pulses are expanded to a larger cross section, reducing the pulse energy density to a smaller level of 100 ins./sq.cm. USE/ADVANTAGE - For treating myopia, hyperopia, astigmatism etc., with simple mfr., improved reliability and easy handling.
Patent DE-4103442-A1 (DE)
Title: Control loop demand value control e.g. for current rectifiers - using most positive or negative changes for small signal variations to define total permissible change for each actual change and each loop
Inventor: GEITNER GERT-HELGE DR ING
IPC: G05B5/01
Filed: 1991-02-01
Abstract: Controlling the demand value of a control loop for limiting the output of a controller involves detecting the most positive or negative changes in the demand value for the current control structure. The total permissible change in demand value is defined using these values for each demand value change and for each control loop. The max. value of the product of the factor 100/(the most positive or negative value) and the difference between the controller output and the appropriate limit value is used to determine the smallest permissible total demand value increase. USE/ADVANTAGE - E.g. for controlling current rectifier drives. Maximum overshoot defined by control optimisation is maintained irrespective of applied optimisation technique and required demand value change.
Patent DE-4104761-A1 (DE)
Title: Display illuminating circuit for domestic equipment - saves power by deactivating main power stage and maintaining auxiliary sage during idle periods
Inventor: PLANKL MANFRED DIPL ING
IPC: G09G3/00
Filed: 1991-02-15
Abstract: The circuit for illuminating a display (1) has a switching unit which switches a main power stage (1) on or off according to the selected operating state, whereby the display is switched off when the main power stage is switched off and an auxiliary power stage (2) to a processor (5) remains on. The switching unit is selected by input elements. For use with a push-pull display the main and auxiliary power stages are connected in parallel. The auxiliary power stage is a capacitor power stage. USE/ADVANTAGE - For reduction of power wastage in domestic electrical equipment e.g. microwave oven, whereby only power required for display is maintained during idle periods.
Patent DE-4105459-A1 (DE)
Inventor: BRUNNER RUDOLF
IPC: F15B21/045
Filed: 1991-02-21
Abstract: In a hydraulic control device (S), with a double acting hydraulic consumer (V) to which pressure can be admitted via two working lines (4, 5) and which is protected in at least one working direction by a load-holding valve (H) which can be opened and closed hydraulically in a controlled manner, a control-pressure line (12) which is attached to a control connection of the load-holding valve and to which pressure can be alternatively admitted, and a damping restrictor (13) in the control-pressure line (12), a valve (15, 15', 15'', 15''', 15<IV>) is provided which, during the controlled closing movement of the load-holding valve (H, 6), automatically responds to a delay in the controlled closing movement caused by the instantaneous viscosity of the pressure medium and/or too rigid a setting of the damping restrictor (13) and critical with regard to the follow-up of the hydraulic consumer (V) under a load (F) and then switches to through-flow and by-passes the damping restrictor (13). The valve prevents the inflow of too cold a pressure medium and/or too rigid a setting of the damping restrictor for a desired damping with regard to the controlled closing of the load-holding valve and ensures the rapid controlled closing of the load-holding valve, which controlled closing is required to stop and hold the load, in particular during a safety cut-out. <IMAGE>
Patent DE-4105493-A1 (DE)
Title: Photometric parameter photoelectric measurement for material analysis - using light source with four or more closely spaced LEDs and photodetector relatively distant from source
Inventor: SZLAPA ANDRZEJ
IPC: G01N21/25
Filed: 1991-02-21
Abstract: The arrangement allows for the photoelectric measurement of a photomtric parameter varying with the passage of light through a transmissive medium and has a light source and photodetector arranged on a common optical axis. The light source (10) consists of several, pref. 4, light emitting diodes (16-19) or LEDs arranged essentially parallel to the optical axis. The separation of the LEDs is negligible w.r.t. the distance between the light source and photodetector (11). USE/ADVANTAGE - Esp. for analysing material contents of specimen with increased accuracy using simple compact arrangement.
Patent DE-4105887-A1 (DE)
Title: Photosensitive lithographic plate with hydrophilic coat - contg. amino phosphoric acid or phosphonic or phosphinic acid or salt, preventing stating and soiling
Inventor: NAGASHIMA AKIRA
IPC: B41N1/14
Filed: 1991-02-25
Abstract: PS lithographic printing plate has an Al substrate with a roughened surface and (a) an anodised layer of at least 1.0 g/m2; (b) a hydrophilic coat, contg. an organic cpd. (I) or its salt with an amino gp. and a phosphonate, phosphinate or phosphate gp., on (a); and (c) a positive-working light-sensitive coat on (b). Pref. (I) contains a (substd.) amino gp. of formula (II) and a phosphonate, phosphinate or phosphate gp. of formula (IIIA-C): -NR1R2- (II); -P(=O)(OH)(OR3)- (IIIA); -P(=O)(OH)R4- (IIIB); -O-P(=O)(OH)(OR5)- (IIIC); R1-5 independently = H or (substd.) 1-5C alkyl, pref. H. (I) has a skeleton with 1-10C in the form of an aromatic ring, opt. contg. N, O and/or S heteroatom(s); or a noncyclic skeleton with 1-3C. It may be in the form of a salt with HCl, H2SO4, HNO3, a sulphonic acid, HCOOHM, an alkali metal, NH3, a lower alkanolamine or a lower alkyl amine.  Pref. (I) are aminomethyl-, 1- and 2-aminoethyl-, 1-dimethylaminoethyl-, 2-(N-methylamino)ethyl-, 1-, 2- and 3-aminopropyl-, 1-aminopropyl-2-chloropropyl-, 1-, 2-, 3- and 4-aminobutyl-, 2- and 5-aminopentyl-, 2- and 5-amino-hexyl-, 4-aminophenyl-, 4-amino-2-methylphenyl- and 4-amino-3-fluoro-phosphonic, -phosphinic and -phosphoric acid.  The Al plate consists of pure Al or an Al alloy with max.  10 wt.% Si, Fe, Mn, Cu, Mg, Cr, Zn, Bi, Ni and/or Ti. USE/ADVANTAGE - The plate gives unstained nonimage areas; the background stays clean during printing; the image adheres strongly to the substrate; and the plate has excellent  durability.
Patent DE-4105923-A1 (DE)
Title: New triazine derivs. carrying para-amino:cinnamic acid substit. - useful as protectant against light esp. in cosmetics
Inventor: SPERLING-VIETMEIER KARIN DR
IPC: C07D251/70
Filed: 1991-02-26
Abstract: New p-aminocinnamic acid-substd. triazines of formula (I) are claimed. In (I), R1 = gp. of formula (i); R2, R3, R4 = H or 1-4C alkyl; R5, R6 = H or 1-4C alkyl or alkoxy; R7 = H, alkali metal, NH4, mono-, di- or tri-(1-4C)alkylammonium, mono-, di- or tri- (2-4C) alkanolammonium, 1-20C alkyl, 2-20C alkenyl, or a polyoxyethylene residue with 1-10 EO units, in which the terminal OH gps. may be etherified with a 1-4C alkanol. USE - (I) are used as protectants against light.
Patent DE-4109793-A1 (DE)
Inventor: SROSTLIK PETER
IPC: B22D18/02
Filed: 1991-03-26
Abstract: The invention relates to a process for casting metals, especially alloys with a low melting point, in which the liquid metal is introduced into a mould (3) from below via a casting channel (4) and an inlet aperture (5) arranged at the lowest position of the mould (3), and a device for implementing this process. The direct further use of the casting (7) with the avoidance of the formation of a moulding sprue requiring further processing is made possible in that, after the mould (3) has been filled and the metal in the mould (3) has only partly solidified, the moulding pressure is reduced or released so that liquid metal can flow back out of the mould only via a backflow channel (13), the cross-section of which is substantially smaller than that of the casting channel (4) and in that a plunger, the face (20) of which has the size and shape of the outer contour of the moulding (7) in the region of the inlet aperture (5), is moved at least over the final section (16) of the casting channel (4), pushing the liquid metal in this section into the mould (3), until the face (20) of the plunger (18) adjoins the inner surface of the mould (3).
Patent DE-4109899-A1 (DE)
Title: Access step for fork lift truck - has depression to drain fuel spilt during filling of fuel tank
Inventor: APPELDORN MATTHIAS DIPL ING
IPC: B60K15/04
Filed: 1991-03-26
Abstract: A fork-lift truck has a fuel tank mounted on the side of the truck chassis. The tank filler pipe (2) extends through a hole in the rear part of the step used by the driver in order to get in or out of the truck. The access step has a depression formed around the hole for the tank filler pipe. Any fuel spilt whilst filling the fuel tank flows into the depression and then flows out through the gap between the filler pipe and the edge of the surrounding hole. USE/ADVANTAGE - Access step for fork-lift truck. The depression allows spilt fuel to drain away and reduces the risk of the driver slipping when getting in or out of the vehicle.
Patent DE-4112447-A1 (DE)
Title: Motorcycle safety system to reduce moment of tilt - consists of flywheels with gyroscopic action, located in wheels, rotating in opposite direction
Inventor: BLAU FRANZ
IPC: B62D37/06
Filed: 1991-04-16
Abstract: The system is for use with motorcycles. It compensates for the moment of tilt, produced in a vehicle travelling through a bend, by gyroscopic action of the wheels, and by centrifugal force. The compensation fact is produced by one or more flywheels, or gyroscopic action. The flywheels have a horizontal transverse axis, like the vehicle wheel, but they rotate in a direction opposite to that of the wheels. The flywheels are located within the vehicle wheels. They may be used for land- and watercraft of all types, and esp. for a narrow track car. USE/ADVANTAGE - Gyro-stabilisation system for motorcycle. Driver does not have to lean into bend.  Very little extra weight.
Patent DE-4113733-A1 (DE)
Title: Field-effect transistor for dynamic memory - uses asymmetric source, drain and isolation layers to minimise substrate defects and channel pinch-off effect
Inventor: ARIMA HIDEAKI
IPC: H01L27/108
Filed: 1991-04-26
Abstract: The Field-Effect Transistor (FET) and capacitor (11, 12, 13) are deposited on to a substrate (1), 2 lightly-doped regions being diffused into the substrate to form the FET (3) source and drain. The first region (6b) is in contact with the channel region, while the second (6a) is  diffused to a greater substrate-depth on the capacitor side of the gate electrode (4c). The gate-isolation layer (20) is thicker on the capacitor side (20a) than on the channel side (20b). ADVANTAGE - Redn. of substrate surface crystal defects prevents loss of electrical charge. Minimises channel pinch-off effect.
Patent DE-4119752-A1 (DE)
Title: Magnetic fixture for grinding wheel on rotary arbor - is based on permanent magnet which holds wheel to spindle head unless opposed by electromagnet energisation
Inventor: HERBERT PHILIPP DIPL ING
IPC: B24B45/00
Filed: 1991-06-15
Abstract: The grinding wheel (3) with its steel flange (4) is fitted to the head (7) of the tool spindle (1) and secured with electromagnet coils (13) supplied with current via leads (14) as well as by the permanent magnet (12). In normal operation the coils (13) are de-energised. When a change of wheel is desired they are supplied with current from the tool spindle so that the attraction of the permanent magnet (12) is overcome and the wheel released. ADVANTAGE - Allows easy replacement of wheel but eliminates risk of accident in event f current failure.
Patent DE-4121169-A1 (DE)
Title: Concasting of grinding balls for cement industry - using high alloy grey cast iron@ poured into constantly assembled and disassembled mould halves passing around closed circuit chain drive
Inventor: SIEDLER RICHARD
IPC: B22D25/02
Filed: 1991-06-24
Abstract: Starting material of grey cast iron contg. a high amt. of alloying elements is poured into two part moulds (2) which are assembled and disassembled at the top and bottom respectively of the concasting section (4) by rotating pistons (6) with magnetic holding plates (7). The formed concasting at the bottom is sepd. into balls by shear cutter (11). USE/ADVANTAGE - Producing grinding balls of 20-90 mm dia. The balls produced have good wear resistance and do not have to be heat treated. The method reduces the production costs by avoiding constant mould production, and eliminating a lot of transport. Cleaning costs are also reduced or eliminated.
Patent DE-4125018-A1 (DE)
IPC: B23K20/10
Filed: 1991-07-27
Abstract: The invention relates to an electrical connection, especially a through contact, between at least two conductive layers, especially conductive tracks or the like on printed circuit boards, preferably multilayer printed circuit boards, with said connection formed by an electrically conductive track running transversely to the layers and contacting them. The connecting track is formed by a separately manufactured conductive connection section (6) subsequently applied to the printed circuit board (1) and is soldered to the layers (2).
Patent DE-4129597-A1 (DE)
Title: Clamping device for machine tool - is actuated by stack of disc springs and released by application of pressure medium.
Inventor: TAGLANG JOHANN
IPC: B23B31/30
Filed: 1991-09-06
Abstract: The machine tool has a spindle (1) to receive tools with steep taper shanks. The spindle has a clamp which is actuated by a stack of disc springs (4) which press the actuating bush (3) upwards against pawls (5). These pawls are swung upwards to engage radial recesses in the disc which is screwed to the rod (2). The clamp is released by applying a pressure medium to the piston (16). The piston acts on the rods (17) which pass through the disc (2.2) and press the actuating bush downwards to allow the pawls (5) to swing downwards. USE/ADVANTAGE - Clamping device for a machine tool with quick release using a pressure medium.
Patent DE-4133408-A1 (DE)
Title: Valve timing adjuster for IC-engine camshaft - has web, enclosing planet wheels on outer circumference
Inventor: TENBERGE PETER DR
IPC: F01L1/352
Filed: 1991-10-09
Abstract: The adjuster is located within the control drive of a cam shaft (4), between a drive wheel (3b) and a take off (6). The engine is formed as a planetary transmission (2). This consists of ring shaped planet wheels (9,10), sun wheels (7,7b), and a ring shaped race (12). The race is connected to a servo (35). The race encloses the planet wheels on their outer circumference (36). The planet wheels engage with an internal toothing (37) in an external toothing (38) of the sun wheels, which are located closely beside each other. ADVANTAGE - Simple and reliable adjustment of drive.
Patent DE-4134912-A1 (DE)
Title: Impact tool for pipe jacking through ground - consists of driving tube with cutting head housing piston, which activates chisel headed striker
Inventor: MOHRMANN MICHAEL DIPL ING
IPC: E21B10/04
Filed: 1991-10-23
Abstract: The pipe jacking impact tool  consists of a driving tube (1) with a cutting head (2), an axial conveyor tube (3) and an impact striker tube (8) at the front end of the conveyor. The striker is activated by a piston (6) against a spring (15)force, and is equipped with a star-shaped chisel (16,17). A compressed air supply line (5) is connected to numerous,e.g. six ducts(20) arranged coaxially around and inside the casing of the driving tube. USE/ADVANTAGE - For drain pipe house connections etc.,with simple and reliable operation.
Patent DE-4137888-A1 (DE)
Title: Switch unit for adjustment of motor vehicle seat - has panel with symbols of seat areas with separate switches for individual function adjustment.
Inventor: SCHWIRZ KARL FRIEDRICH
IPC: B60R16/00
Filed: 1991-11-18
Abstract: A control switch panel (1) is used for the adjustment of a vehicle seat. The panel has a number of switch groups (4,5,6) with actuators and symbols relating to seat element. The back-rest and headrest are controlled by rocker switches (7) with clearly marked symbols. A similar type of switch arrangement is used for the seat pan, with the centre unit (8) providing horizontal adjustment. Seat height and inclination can be varied using the front and rear switches (9). ADVANTAGE - Simple construction from few components. User comfort.
Patent DE-4139436-A1 (DE)
Title: Protection device for control microcomputer in motor vehicle - disconnects supply voltage provided by solar cell upon abnormal battery output voltage
Inventor: KANNO YOSHIHISA
IPC: H02N6/00
Filed: 1991-11-29
Abstract: The protection device for a control microcomputer in a vehicle evaluates the voltage provided by the vehicle battery (5) to interrupt the lead between a solar cell (6) and the control microcomputer (13) when an abnormal battery output is detected. Pref. the microcomputer uses a MOSFET chip and is used to control a ventilation system for the vehicle passenger space with two ventilation fans for the left and right hand sides of the vehicle. The negative terminal of the vehicle battery is coupled to the vehicle earth line (12) and its positive terminal coupled to the microprocessor via a protection fuse (10). The negative side of the solar cell is similarly coupled to earth and its positive coupled to the microcomputer. ADVANTAGE - Prevents damage to MOSFET chip from abnormal supply voltage.
Patent DE-4200564-A1 (DE)
Title: Jointed arm design for window awning - using wedging insert into open-ended pipe arm which is secured by second wedge section.
Inventor: STAWSKI KARL HEINZ
IPC: E04F10/06
Filed: 1992-01-11
Abstract: The joint section is used for erecting an awning over a window. It is formed by inserting a section (17) and fixing it firmly, into the open end of a tubular arm (14). The insert section has two clamping surfaces (29,30) which correspond to two opposite inner surfaces (26,27) of the tubular arm. Into a wedge shape (33) extraction in the insert, a wedge (36) is located, which can be adjusted longitudinally, and causes the insert to be pressed against one of the inner surfaces of the tubular arm. USE/ADVANTAGE - Insert connection allows articulated joint for window awning to be quickly installed or removed.
Patent DE-4201440-A1 (DE)
Title: Specimen head for nuclear resonance spectrometer - contains tubular housing, inner holder tube, high frequency coil and diamagnetic screen
Inventor: GUENTHER ULRICH DIPL CHEM
IPC: G01R33/30
Filed: 1992-01-21
Abstract: The specimen head has a tubular housing (2) with an inner, pref. axially movable holder tube. The housing carries an electronic high frequency coil (5) with a tuning device. At least the housing consists of non-conducting material. A screen (6) of diamagnetic material such as copper or aluminium is mounted on the housing in the region of the high frequency coil. USE/ADVANTAGE - Pref. for a NMR spectrometer with vertical magnet for investigating small animals. A simple arrangement provides effective electromagnetic screening
Patent DE-4204132-A1 (DE)
Title: New compsns. for vaccination against tumours and auto-immune disorders - contain microorganism cultures obtained from patient's own serum or tissues
Inventor: PEKAR RUDOLF DR
IPC: A61K39/00
Filed: 1992-02-12
Abstract: A prepn. (A) comprises a culture of polymorphic microorganisms isolated from, and characteristic of, a particular patient in a nutrient medium. The microorganism-contg. prepn. used to inoculate the medium is recovered by processing a blood or tissue sample from the patient in a liq. medium, followed by complete removal of body cells, e.g. by filtration. More specifically the nutrient medium contains serum from the patient's own blood and the microparasites are isolated from blood haemolysate. Partic. the serum and microparasites are recovered from the same blood sample. The medium also contains an aseptically recovered embryonal protein extract. USE/ADVANTAGE - (A) are useful (1) for diagnosis (i.e. after a predetermined incubation period the culture is tested by serological, genetic or electron-microscopic methods) or (2) after inactivation, as vaccines for immunotherapy. These vaccines can be admin. (repeatedly) orally or parenterally, pref. as an immunogen to suppress tumours and autoimmune diseases. By using the patient's own serum as nutrient medium (a) contamination by foreign microorganisms is avoided and (b) the vaccines are free of allergenic foreign proteins
Patent DE-4208406-A1 (DE)
Title: Keyboard interface processing to identify connected type of computer
Inventor: CHEN CHENG-WEN
IPC: G06F3/023
Filed: 1992-03-16
Abstract: The interface processing method sending, after firmware execution, with delay of 300ms of stability for main computer, ll bits of BAT CODE by AT/PS2 mode, the data is AAH, with intended reverse direction to generate errors. Then continue trying to send erroneous BAT CODE, until the code is sent. The last data of sent code is detected if it is LOW, then the system is XT type, and this system enters XT program execution, reset data and set CLOCK.When the data is not reset by computer, detect CLOCK and data after lms delay. If both are reset by computer, then this system accepts the command of computer. If data is RESEND or RESET, then this computer is AT/PS2 type. If the command is not an assigned command, or the acceptance fails, then this system jumps out and tries to send erroneous BAT CODE.f
Patent DE-4208979-A1 (DE)
Title: Measurement system for load on tractor vehicle and=or on front and=or rear wheel unit - contains pressure sensor in working cylinder of lifting device, force sensors in wheel units, calculation unit and display in cabin
Inventor: GERHARDS ALFRED DIPL ING
IPC: B62D37/00
Filed: 1992-03-20
Abstract: The measurement arrangement has an associated display in the tractor cabin to which a load signal is fed. A pressure sensor is built into the working cylinder of a lifting device. A force sensor can be built into the front wheel and/or rear wheel unit. An evaluation unit is connected between the measurement arrangement and display device. USE/ADVANTAGE - Esp. for tractors or other agricultural vehicles. Improves stability and safety of vehicle.
Patent DE-4212696-A1 (DE)
Title: Vehicle wheel suspension with telescopic strut - end of strut takes form of piston subject to hydraulic pressure to give vehicle height adjustment
Inventor: DROTT PETER ING GRAD
IPC: B60G13/00
Filed: 1992-04-16
Abstract: Wheel suspension for a vehicle having a wheel support (1) and an attached telescopic strut (2) with a hydraulic pressure chamber (4) in the fastening region between the two parts. The end of the telescopic strut which projects into the wheel support is formed as a piston (3) and is axially displaceably arranged within the wheel support. The hydraulic pressure chamber is connectable with a pressure source (20). USE/ADVANTAGE - Allows variation in height of vehicle without need for direct adjustment of telescopic strut.