baber/WOPTO huggingface dataset:
Patent DE-3824259-A1 (DE)
Title: Circuit arrangement for a differential voltage detection on the DC-voltage intermediate circuit of an indirect converter
Inventor: EGGERT BERNHARD DR ING
IPC: H02M5/45
Filed: 1988-07-14
Abstract: It is intended to specify a circuit arrangement for the detection of the difference between the voltage (UN) of a mains supplying the mains converter (Gd) of a DC-voltage intermediate-circuit converter and the voltage (Ud) at the intermediate-circuit capacitor (Cd) of the output-side converter which is connected to a load, which circuit arrangement allows very finely differentiated detection of a deviation of the voltage of the intermediate circuit from the ideal value in the case of fluctuating amplitude of the mains voltage (UN), without dynamic constraints. For this purpose, a second, unloaded DC-voltage circuit having a second capacitor (Cn) is provided, which is supplied by a second converter (Gn) which is likewise connected to the mains. The value of the DC voltage (Un) at the second capacitor (Cn) is subtracted from the value of the DC voltage (Ud) at the intermediate-circuit capacitor (Cd) in order to form a quantity (Um) proportional to the desired voltage difference. The differencing is preferably produced by connecting the two DC-voltage circuits, each via an ohmic resistor (R1, R2), in the two connecting lines, and providing an adder (A) to which quantities (U1, U2) corresponding to the two voltage drops (UR1, UR2) across the ohmic resistors (R1, R2) are fed. At least one of these quantities (U1, U2) is voltage-decoupled via a buffer amplifier (V1, V2) from the connected DC-voltage circuits. <IMAGE>
Patent DE-3829986-A1 (DE)
Title: Process for increasing the mesophase content in pitch
Inventor: MARRETT ROLF
IPC: D01F9/145
Filed: 1988-09-03
Abstract: A process for increasing the mesophase content of pitch is described. In this process, the pitch is positively conveyed in the molten form as a thin film and thermally treated, passing through one or more homogenising zones and one or more venting zones in which volatile constituents are removed. Preferably, the process is carried out by means of an extruder. The process makes it possible to obtain a high content of mesophase within a short time, without very highly viscous or non-fusible products being formed. The pitch enriched with mesophase can then be continuously fed to a melt-spinning machine, pitch filaments and - after further process steps - carbon filaments being obtained.
Patent DE-3831811-A1 (DE)
Title: Process and apparatus for controlling the regeneration of water softening units
Inventor: MEISER EWALD
IPC: B01J49/80
Filed: 1988-09-19
Abstract: The process and the apparatus for controlling the regeneration of water softening units exploit the properties of the exchanger material of undergoing a decrease in volume during the softening of water and an increase in volume during the regeneration. The regeneration is initiated when the exchanger material (36) which is in a container (10) on which a bellows (24) is attached, assumes a small volume. Via an actuating stem (30), a regeneration valve is actuated, via which regeneration brine is passed through the exchanger material (36). When the material (36) increases in volume during the regeneration, the bellows (24) expands and the regeneration valve is shut off via the stem (30), after which further water softening can be carried out. <IMAGE>
Patent DE-3835677-A1 (DE)
Inventor: ZIEGLER HERBERT
IPC: G01R31/00
Filed: 1988-10-20
Abstract: The trip current (I DELTA ) of a residual-current breaker is to be measured with the aid of a rising test current (IK). At the same time, the same two-terminal measuring device is to be used for measuring the contact voltage (UB) occurring at the tripping time (tA). Initially, the contact voltage (UBN) referred to the rated fault current (I DELTA N) is measured and then the test current (IK) is increased in predetermined steps. The steps are counted. The number of steps at the tripping time (tA) corresponds, referred to the total number of steps, both to the trip current (I DELTA ) and to the associated contact voltage (UB). The measurement is applied in measuring and test instruments which are equipped with a computer. <IMAGE>
Patent DE-3836995-A1 (DE)
Title: Reversing hydrodynamic transmission
Inventor: SPIEGEL UDO DR ING
IPC: B61C9/18
Filed: 1988-10-31
Abstract: The invention relates to reversing hydrodynamic transmission for locomotives, in particular for shunting diesel locomotives, which have the pulling power of a multi-circuit gearing for each direction of travel. Each output direction of rotation is assigned a start-up converter whose turbine wheel is continuously connected to the power output. For speeds above the start-up range, a cruising assembly which is independent of the direction of travel is arranged, which assembly consists of one or more hydrodynamic circuits, and a mechanical turning circuit is connected downstream of the cruising assembly. The mechanical turning circuit of the cruising assembly is actuated in such a way that it is switched without load to the direction of rotation of the respectively activated start-up converter. <IMAGE>
Patent DE-3840019-A1 (DE)
Title: Sanding pad
Inventor: GEANEY KEVIN
IPC: B29C65/08
Filed: 1988-11-26
Abstract: A sanding pad, in particular for hand sanders, having a carrying plate made of plastic, to the lower surface of which there is fastened a sole sheet with a hook-system covering (Velcro fabric) for the simple attachment and detachment of a sheet-like abrasive equipped with a matching counter-covering, is designed, for the purpose of a quicker, simpler and more reliable connection between the sole sheet and the carrying plate, in such a way that the sole sheet is connected to the carrying plate in fastening regions distributed over the lower surface by ultrasonic welding, fastening regions running at least at edges of the lower surface.
Patent DE-3841597-A1 (DE)
Title: Process for continuously producing fibre-reinforced plastic pipes and device for carrying out the process
Inventor: ELSNER LOTHAR
IPC: B29C53/80
Filed: 1988-12-09
Abstract: The process is used to build up step by step a plastic pipe which has, layer by layer from inside to outside, an inner release film, an inner skin, a resin-rich intermediate layer with nonwoven fabric inlay, a plurality of alternating axial and tangential reinforcing layers of fibrous strands embedded in synthetic resin, an outer skin and an outer release film. The device for carrying out the process has the working stations required for this, which are arranged on a common basic frame. Held fixedly thereupon by means of a holding device is an elongated shaft. Arranged along the shaft are a feeding and moulding device for the tubular release film, a feeding device for the synthetic resin of the inner skin, a heating device for the initial curing of the inner skin, a feeding device for a nonwoven fabric for the intermediate layer, a plurality of feeding devices each for a synthetic resin layer and, alternately therebetween, feeding devices for axially and tangentially running fibre strands for forming the corresponding reinforcing layers, therebetween also annular scrapers for wiping off excess synthetic resin and for consolidating in particular the layers with fibre inlays, a feeding device for the synthetic resin of the outer skin, a feeding device and moulding device for the feeding of the outer release film, a heating station for initiating the curing operation of the various synthetic resin layers with... Original abstract incomplete. <IMAGE>
Patent DE-3842265-A1 (DE)
Title: Gearbox for motor vehicles
Inventor: RIETSCH DONALD R
IPC: F16H3/091
Filed: 1988-12-15
Abstract: In a gearbox for motor vehicles the gearshift sleeve (112) of a synchromesh geared coupling (136'), provided for the shifting of a transmission gear, is connected by way of a synchromesh ring (140) supported on a brake ring (136) to a change gear (102) of the said transmission gear also during the shifting of a second transmission gear lying in the same shift plane produced by a sliding-mesh gear (70) in order to obtain an adjustment of the instantaneous speed of the change gear to the speed of its bearing shaft (96) avoiding a direct drive connection. <IMAGE>
Patent DE-3843842-A1 (DE)
Inventor: KETTERLING HANS-PETER DIPL ING
IPC: H04B1/38
Filed: 1988-12-24
Abstract: The object of the invention is to develop a known transmission system for digital and analog signals with a radio transceiver and at least one peripheral unit connected via line connections to a microcomputer control block so that a minimum number of lines are required for two-way transmission. Moreover, the line connections are intended to emit virtually no radiated interference and to be virtually unaffected by interference radiated from an external source. The object is achieved in that a pulse filter (55, 56) is provided in each case at the data outputs (50, 51) of the ports (52, 53) of the control blocks (11, 18) of the radio transceiver (10) and the peripheral unit (14). The two-way data signal line (57) is provided in a wired AND structure between a pull-up resistor (63) at the data output (50) of the microcomputer control block (11) and a pull-up resistor (64) at the data output (51) of the microcomputer control block (18). Further peripheral units (19) are connected at branching points of the two-way data signal line (57). A preferred field of application for the invention is a radio telephone system. The drawing shows a block diagram of a transmission system according to the invention. (Fig. 2) <IMAGE>
Patent DE-3902494-A1 (DE)
Title: Indirect mirror luminaire
Inventor: ROLL KARL-FRITZ DIPL ING
IPC: F21V7/00
Filed: 1989-01-27
Abstract: Indirect mirror luminaires, fitted with fluorescent tubes and using a main and a counter reflector, are used for the uniform illumination of larger rooms while limiting the reflexes to a sufficient degree. They result in a relatively high outlay in terms of production. The goal is therefore to manage with a number of such luminaires which is as low as possible for the sufficient illumination of a room. To achieve this optimisation it is proposed to subdivide the two partial reflectors (6.1, 6.2) of the main reflector (6) which are mutually disposed with mirror image symmetry with respect to a central plane (E) into three mutually bordering sections (A, B, C) in terms of their cross-sectional contour, of which the first section (A) on the side of the central plane (E) is designed so as to scatter strongly and the third section (C) on the side of the outer reflector edge is designed for a strongly directed, predominantly spread-beam reflection and the second section (B) connecting the two sections (A, C) forming a transition between the reflective properties of the first and the third section. <IMAGE>
Patent DE-3906103-A1 (DE)
Title: 1,3,5-Tris(2-furyl)-2,4-diaza-1,4-pentadiene, its preparation, and its use as a medicament
Inventor: SOTEK GUSTAV
IPC: C07D307/52
Filed: 1989-02-27
Abstract: The invention relates to 1,3,5-tris(2-furyl)-2,4-diaza-1,4-pentadiene of the general formula: <IMAGE> and its salts, its preparation and its use as a medicament, the main indications being the therapy of carcinomas, heart disease and high blood pressure.
Patent DE-3912766-A1 (DE)
Title: One-piece plastics castor for furniture - incorporates gas or foam-filled central cavity
Inventor: SCHROEDER DIETER
IPC: B60B33/00
Filed: 1989-04-19
Abstract: The castor is for furniture, equipmeNt and the like. It has a wheel made of plastics the body of which is provided with a wheel hub and if need be a rim to take a tyre, as well as disc-shaped side walls. The wheel body (11) with the side walls, the hub (13) and the rim (14) or the tyre (12) are formed as a single plastic component, and the castor also incorporates a gas or foam-filled hollow chamber (19). USE/ADVANTAGE - Castor which dispenses with previous methods of forming a side wall and which is highly stable in use.
Patent DE-3914583-A1 (DE)
Title: Multiple-finger gripper for measuring the gripping force and also spatial reaction forces and moments
Inventor: THOM HEINZ DR ING
IPC: B25J15/02
Filed: 1989-05-03
Abstract: The invention relates to a multiple-finger gripper for industrial robots and manipulators which, additionally, measures the gripping force, the reaction forces and moments. It is to have a low overall dimension and small measurement and transmission errors, the measurement transducer at the same time being protected from collisions. According to the invention, the fulcrums of the toggle levers of parallelogram linkages to which the gripping fingers are fastened are situated, axially symmetrically and distributed uniformly on the periphery, on the inner ring of a deforming body which is known per se. The outer ring of the deforming body is fastened to the gripper housing, while the inner ring is connected to the outer ring via elastic elements whose deformation is measured. <IMAGE>
Patent DE-3918090-A1 (DE)
Inventor: TERLETZKI HARTMUD DIPL ING
IPC: H01L27/02
Filed: 1989-06-02
Abstract: The invention relates to an input protective circuit for MOS components which contains a resistor R, a thin oxide transistor DOX and a punch-through component. The use of the punch-through component instead of a field oxide transistor in the protective circuit reduces the breadkown rate of integrated circuits through ESD discharges. The problem of the delayed response of a protective circuit and the concomitant interference through voltage damage are thus minimized. The advantage of the protective circuit of the invention over prior art types lies in that it becomes active immediately on reaching the punch-through voltage and thus responds immediately.
Patent DE-3924821-A1 (DE)
Title: Locking unit for motor vehicle - works independently of central locking system for several components which require simultaneous locking e.g. backrest of rear seat and boot
Inventor: SEITZ RAINER
IPC: B60N2/00
Filed: 1989-07-27
Abstract: The locking unit is designed for remote operation across the pneumatic system and has a common operating unit(9) independent of the central locking system. The operating unit(9) is arranged in a motor vehicle region which can be locked up, e.g. the glove compartment. The adjusting elements(1,2,3) of the locking unit are connected to the operating unit(9) via pneumatic control lines(7,7a,7b). The operating unit has a piston(12), moved by hand by means of a ram(11), and it is possible to move by hand the respective pistons(4,4a,4b) of the adjusting elements(1,2,3). A choke(14) forms an atmospheric connection for the pneumatic system which however, is so small that a quick pressure build up or redn. is possible by moving the piston of the operating unit. USE/ADVANTAGE - Locking unit working independently of central locking system. Type development which allows rear seat back rest to be locked and released in most confortable manner.  Can be operated quickly. Low cost.
Patent DE-3927073-A1 (DE)
Inventor: ALLEC JOSIANE
IPC: A61K8/65
Filed: 1989-08-16
Abstract: Process for producing microspheres of proteins by crosslinking in emulsion, in which a carbodiimide is added to the emulsion to activate the crosslinking. Microspheres of one or more proteins crosslinked by a bridge of the isopeptide type are obtained. These microcapsules can be used to contain compounds possessing pharmaceutical or cosmetic activity.
Patent DE-3929751-A1 (DE)
Title: Test strip foil photometric analysis - replaces separate filter by correspondingly coloured carrier medium
Inventor: KEUL GUENTER
IPC: G01N21/86
Filed: 1989-09-07
Abstract: A test strip for use in clinical chemistry, in soil and water analysis, for chemical biological and physical investigations has an integrated filter for the photometric, reflection, photomeric, optical and visual measurement of clinical-chemical parameters. The carrier medium of the test strip is dyed thoroughly in a specific wavelength or is lined with a material of a specific wavelength. The reaction components for a water or solvent analysis are e.g. attached to the coloured carrier medium, with an integrated filter or coloured layer. The light source has a detector, sensor or photocells. A haemoglobulin determination demands e.g. a colour with a wavelength of 546mm. ADVANTAGE - This saves separately inserted filters so that filter mistakes are avoided and the large amt. needed for investment in filters is cut out.
Patent DE-3932216-A1 (DE)
Title: Vehicular headlamp system giving early warning of obstacles - maintains main-beam headlamps in operation but masked by infrared filters while dipped headlamps are on
Inventor: LINDAE GERHARD DIPL ING
IPC: F21V9/00
Filed: 1989-09-27
Abstract: On a four-headlamp vehicle the dipped-beam headlamps are arranged outboard, and the main-beam headlamps (9) inboard with a tubular spectral filter (13) mounted coaxially before each bulb (11). When the dipped beams are switched-on, the main-beam bulbs (11) continue to radiate but the filters (13) are slid along rails (17) into position for intercepting the visible light so that only infrared radiation is projected for reflection from obstacles into an infrared camera. ADVANTAGE - Driver on dipped headlamps can receive timely warning of distant obstacles, without dazzling drivers of oncoming vehicles.
Patent DE-3932277-A1 (DE)
Title: Micro-electronic semiconductor device with lattice adaptation - by superlattice for contact area between them and with alternative material removed where devices are made in one of materials
Inventor: SONODA TAKUJI
IPC: H01L31/0352
Filed: 1989-09-27
Abstract: In a first structure on a semiconductor substrate (1, 4) a super lattice (3) is deposited to allow depsn.  of a second semiconductor (5, 6) with a different compsn.  and lattice constant. The structure features areas (7) in which the substrate material has been removed and areas (4') in which the super lattice and layers above have been removed. The active devices (9,10) are pref. constructed in the areas where only 1 of the materials remains. Where the 2 materials overlap the super lattice remains present to ensure adaptation. The substrate (1, 4) is pref. Si, the second semiconductor material is pref. GaAs (5, 6). Also claimed is a structure using a Si substrate in which an insulating layer with a suitable latticee constant, e.g. CaF2, is formed between the bulk (1) and the epitaxial layer (4). The first material is pref. a solar cell and the second material pref. forms a laser diode. Also claimed is the first structure with the addition of a layer of heat conductive material (11) coating the inside of the opening (7) etched in the substrate. Also claimed is a structure as above with, instead of the heat dissipating layer, further layers of the second semiconductor are grown epitaxially and a device is formed in them. A pref. process flow for mfr. is also claimed. USE/ADVANTAGE - The method allows the use of semiconductor materials with different lattice constants in a combined device without incurring high mismatch related defects in the surfaces, i.e. showing 10-10 power 4 defects/cm2 instead of the 10 power 6/cm2 level currently achieved. This allows similar characteristics to be achieved in the devices as in single material devices. The structures are used for the mfr. of opto-electronic and electronic devices.
Patent DE-3937130-A1 (DE)
Title: Box-type cooler - for power semiconductor modules insulated by layer of specified plastic material
Inventor: SCHMID GUENTER DIPL ING
IPC: H01L23/473
Filed: 1989-11-08
Abstract: The heat loss of power semiconductors is carried away by box-type cooling units (1), made of conductive material (Cu, Al) with a fluid inlet (2) and outlet (3) and several cooling channels (5) separated by webs (4). The cooling box is electrically insulated by a 1-3 mm thick layer (6) made of unsaturated polyester and/or epoxy resin and/or modified polyestyrene such as STYCAST (RTM). The outer part (7) is made of copper. ADVANTAGE - This insulating material combines an effective electrical separation with a good heat conductivity and ensures that the unit has a high cooling capacity.
Patent DE-3941193-A1 (DE)
Title: Heat radiator exchange appts. for heating rollers of fixing unit - uses central opening in bearing for insertion and removal of radiating module for electrophotographic copier or printer
Inventor: HEIGL KARL
IPC: G03G15/20
Filed: 1989-12-13
Abstract: The heat radiator is assembled to form a cylindrical radiator module which can be inserted in the heating rollers (11) mounted in the electrophotographic copier or printer via guides. The inner space of the heating rollers is accessible at least from one side. One end of the module has a receptor for a heat-insulated handle. The latter is formed as a centring and holding element for the module. The roller is mounted on at least one element having a central through opening formed as a centring and guide element for the radiation module. A spacer is assigned to one mounting element also having a through opening as a centring and holding element for the module. ADVANTAGE - Simple exchange of heat radiator without use of tools or extension of rollers, including while appts. is still hot.
Patent DE-4000766-A1 (DE)
Title: Cooling multi-impression injection mould - by arranging parallel sets of coolant bores for all impressions and reversing flow direction after each cycle to produce uniform cooling
Inventor: BRUNNER ERWIN
IPC: B29C45/73
Filed: 1990-01-12
Abstract: An injection mould for plastics, with a numberr of gates and/or mould impressions, is cooled by a system with liq. coolant flowing through bores in the mould tool and at least partly through one impression after another, the direction of coolant flow being periodically changed. ADVANTAGE - System minimises tool wear, it shortensa moulding cycles and raises the uniformity of all mouldings produced by maximising the use of all the mould impressions.
Patent DE-4002161-A1 (DE)
Title: Extracting oils and fats - from exhausted adsorbent with supercritical carbon di:oxide
Inventor: SEN GUPTA ACHINTYA KUMAR DR
IPC: B01J20/34
Filed: 1990-01-25
Abstract: In extn. of oils and fats, esp. of paraffinic and glycidic oils and fats from exhausted adsorbents, e.g. fuller's earth, C and/or SiO2 gel, the fats and/or oils are extracted with supercritical CO2. Extn. is carried out at 31-100 (35-75) deg. C and/or the sepn.  temp. is 0-100 deg. C; the pressure is 200-750 (300-500) bars and/or the sepn. pressure is 32-120 bars. Addtional extractants, e.g.  NO and/or ethane and/or propane, may be used. The extracted fats and/or oils are sepd. from the CO2, eg. by pressure release, and the CO2 is re-used, pref. in a closed cycle, for extn. of fuller's earth. ADVANTAGE - Good quality oils and fats, suitable for food, are released, and the adsorbents can be re-used. Ext. is controlled so that only neutral fats are extracted, leaving free fatty acids and other polar substances in the fuller's earth.
Patent DE-4004464-A1 (DE)
Title: Compact electric hand tool
Inventor: KRESS WILLY
IPC: H02K11/02
Filed: 1990-02-14
Abstract: The hand tool has a pistol grip (11) housing the electric drive motor (13) and a relatively short horizontal section (12) incorporating the tool chuck. The drive motor (13) is coupled to the horizontal tool spindle via an intermediate drive (22) allowing the drive torque to be rotated through 90 degrees. Pref. the intermediate drive (22) uses a conical drive spline (15a) at the end of the rotor shaft (15) of the electric motor (13) and a cooperating drive cog with correspondingly angled teeth.