baber/WOPTO huggingface dataset:
Patent DE-4028294-A1 (DE)
Title: Catalyst for prodn. of ethylene@¨ (co)-polymers -  contains aluminium-alkyl and reaction prod. of titanium-III chloride, magnesium alkoxide, transition metal cpd. and organo-aluminium cpd.
Inventor: HEINRICH ANDREAS DR
IPC: C08F10/02
Filed: 1990-09-06
Abstract: A process is claimed for the prodn. of polymers with uniformly coarse particles and high bulk density (I), by polymerisation of ethylene (E), opt. with up to 10 wt.% 1-olefin of formula R9CH=CH2 (with R9 = 1-12C alkyl), in suspension, soln. or gas phase, at 20-120 deg C and 2-60 bar in the presence of a catalyst (II); (II) consists of (a) the reaction prod. of (a1) a Cl-contg. Ti(III) cpd. with (A2) a Mg alkoxide of formula Mg(OR1)(OR2) dissolved in inert solvent, (a3) a transition metal cpd. of formula MXm(OR3)4-m and (a4) an Al cpd. of formula Al(R4)q(OR5)pX3-q-p, and (b) an Al(1-6C alkyl)3 or a reaction prod. of Al(alkyl)3 or (alkyl)2AlH with isoprene; R1 = R2 = -CH2CHR6R7 or -(CH2)nOR8 (with R6 = H or 1-6C alkyl, R7 = 2-6C alkyl, R8 = 1-4C alkyl and n = 2-6), or R1 = as above and R2 = 1-20C alkyl; M = Ti, Zr or Hf; R3 = 1-9C alkyl; X = halo; m = 0-4; R4, R5 = 1-6C alkyl; X = halo; q = 0-3; p = 0-1; ratio Mg:Ti:M:Al in (a) = 1:(0.05-2):(0.05-2):(0.3-4). Above ratio Mg:Ti:M:Al = 1:(0.05-1):(0.05-1):(0.3-2); (a1) is TiCl3. Pref., (a2) is e.g. Mg bis-(2-methyl-1-pentyloxide) (III), Mg bis-(2-methyl-1-hexyloxide), etc., (a3) is TiCl4, ZrCl4, Ti(OEt)4, etc., (a4) is Et2AlCl, Et3Al2Cl3 or EtAlCl2, inert solvent is hexane is petroleum ether (b.pt. 140-170 deg C) (IV), and (b) is Et3Al or Al-isoprenyl. USE/ADVANTAGE - The invention provides a highly active catalyst (II) for the prodn. of (E)-(co)polymers with high bulk density, wide mol. wt. distribution and narrow particle size distribution, with uniformly coarse particles. (7pp Dwg.No.0/0)
Patent DE-4028925-A1 (DE)
Title: Servo for hydraulic brakes -  has servo membrane uncoupled from reaction element on master cylinder to isolate brake pedal during ABS
Inventor: SCHONLAU JUERGEN DIPL ING
IPC: B60T13/565
Filed: 1990-09-12
Abstract: The pneumatic servo (1) has a membrane (5) linking the two chambers (6,7) and with a thrust coupling to a reaction element (27) in the brake linkage. The reaction element drives parallel master cylinders (11,12) while a second pair of parallel cylinders (21,22) are coupled to the membrane. During ABS isolation valves (17,18) isolate the master cylinders while the reaction element is uncoupled from the membrane. The vented brake force drives back the second pair of pistons and the membrane, without affecting the position of the brake pedal linkage. The membrane is operated via a control valve (8) coupled to the brake linkage. ADVANTAGE - Effective isolation of brake reaction vibrations, simple servo control.
Patent DE-4030415-A1 (DE)
Title: Resettable safety switch for electric dishwasher heating circuit - uses thermo sensors operating switch rod for current cut=out switch contact
Inventor: EPPE HANS-JUERGEN
IPC: H01H1/50
Filed: 1990-09-26
Abstract: The safety switch uses bimetallic discs as a thermosensor (2,3) in heat conductive contact with the monitored medium via the switch housing. The thermosensors (2, 3) act on a switch rod (5) operating a switch contact (6) inserted in the heating current circuit and have different response temps. The thermosensor (2) with the lower temp. is reset automatically, that with the higher temp. requiring manual resetting. USE/ADVANTAGE - For heating circuit protection in program-controlled electric dishwasher. Quick-acting.
Patent DE-4035617-A1 (DE)
Title: Rotary printing machine with cylinders for folding paper - has axial rod-radial ram to adjust blades to suit thickness of paper
Inventor: MILITZER WINFRIED DIPL ING
IPC: B65H45/16
Filed: 1990-11-09
Abstract: A rotary printing machine has a cylinder which is provided with blades for folding the printed product.  The cylinder is constructed in two parts (2,3) which can rotate relative to each other through a small angle.  The cylinder has two diametrically opposite recesses each of which receives a pair of blades (6,7 and 5,8) for folding the paper. The action of these blades can be adjusted to suit different thicknesses of paper.  The adjustment is effected by means of an axially sliding rod which actuates a radial ram (12) which in turn actuates a radial slider (15) which rotates the two parts (2,3) of the cylinder relative to each other. USE - Rotary printing machines.
Patent DE-4038024-A1 (DE)
Title: Slatted blind
Inventor: BERGER GERLINDE
IPC: E06B9/386
Filed: 1990-11-29
Abstract: The slatted blind, has protrusions and/or recesses (4,4') on the surface of some of the slats at least. These form channels in the transverse direction of the slats, and extend to one or both lengthwise edges.     Where the slats are vertical, the protrusions and recesses can be at the overlapping portions, and the slats with them can alternate with those without.
Patent DE-4039345-A1 (DE)
Title: Constant pitch hole drill - has two-pin centring head travelling along row in relation to drill head
Inventor: SCHNEIDER WILLI
IPC: B27C3/04
Filed: 1990-12-10
Abstract: The drill forms holes at constant pitch in a row, having a drill head with spindles in a common plane. After a set of holes have been drilled by the head, a stop indexes the work forward for drilling of the next set, a pin on a centring head then engaging in one of the holes. The centring head (30) has two or more pins (50,52), and moves along the row in relation to the drill head (16) between two stops. At the first of these, the pins engage in holes (24) already drilled in the work (22). In this position, the centring head slides for the length of a set of holes (X) plus the hole pitch (a). ADVANTAGE - Maximum accuracy of hole pitch over the entire length of the work.
Patent DE-4039571-A1 (DE)
Title: Collectorless outer rotor motor with releasable bearing shields - which are secured by radially slidable straps and fasteners to rotor jacket
Inventor: BEST DIETER
IPC: H02K1/27
Filed: 1990-12-12
Abstract: To the stator (1) is coupled a shaft (2), on which a surrounding rotor (4) is rotatably mounted via its jacket (6). The latter is enclosed at its axial ends by a releasable bearing shield (7). The releasable connection is realised by radically straps (11), arrestable by fasteners (23). In the arrested position, they grip beyond undercuts on the inner peripheral surface on the jacket by thin radially outer ends. Pref. each strap consists of a flat abutment section (12) and an arresting tongue (14), parallel offset w.r.t. the section. USE/ADVANTAGE - For outer rotor motors, with simple design and low-cost assembly of the bearing shields.
Patent DE-4040169-A1 (DE)
Title: Sales display of stiff foil plate - has hinge fold outside plate plane and top and bottom part separated up to coupling strap
Inventor: STUKENKEMPER HEINRICH
IPC: G09F15/00
Filed: 1990-12-15
Abstract: The sales display is produced of a stiff foil material that is formed into a box section. The lower section (45) is set at right angles to the rear (3) by folding along a line (39). A display table (43) fits over the lower section and increases stiffness. The rear section is formed with a top (5) and bottom (6) with a fold at a midpoint. This allows the top to be folded flat against the bottom. The front surface has a rectangular cut-out, with the rear having hinge sections. ADVANTAGE - Compact design and easy handling.
Patent DE-4101492-A1 (DE)
Title: Power current circuitry e.g. for DC motor - uses controllable resistor in branch circuit to detect load current regulated in output stage
Inventor: GUENTHER JOACHIM
IPC: G05F1/56
Filed: 1991-01-19
Abstract: The circuitry comprises a load current circuit consisting of the electrical appts. (V) supplied and an output stage regulating the load current (IL). A shunt resistor (RS) is placed in the load current circuit to detect the load current in association with a controllable resistor (T1) with a control terminal (5) and a resistor (R1) coupling one terminal (1) of the shunt resistor to one terminal (3) of the controllable resistor. A first circuit branch (6) couples one input of an operational amplifier (OP) to the other terminal (2) of the shunt resistor. A second circuit branch (7) couples the other input of the amplifier to the first terminal (3) of the controllable resistor. The output of the amplifier is coupled to the control terminal of the latter. A further resistor (R2) delivers a voltage (VA) proportional to the load current. This resistor is connected to earth and the second terminal (4) of the controllable resistor. The ratio of the values of the shunt (RS) and first (R1) resistors is lower than one. The value of the second resistor (R2) is large compared with the ratio RS/R1. ADVANTAGE - Detects load current without inflicting inacceptable loss, i.e. produces proportional voltage sufficiently high for control purposes yet uses a shunt resistance of low value.
Patent DE-4110277-A1 (DE)
Title: Playing figure for board games - uses movement detector to control functions and display unit
Inventor: GOEKEN KLAUS DIPL ING
IPC: A63F9/04
Filed: 1991-03-28
Abstract: The games piece-figure has a mechanical-electrical transducer (1) in the foot-bare. This contains a piece electric crystal, controlling a clock generator (2), counter (3), converter (4) and display (5). Other circuits include a power source (9),  loudspeaker (8), D/A converter (7) and ROM (6). The converter (1) and/or sensor and/or switches defect the movement and/or contact of the games figure causing operation of the random generator (2,3,4). A display (5,8) is provided for the stab of the random event generator. USE - Board games esp backgammon, monopoly (RTM).
Patent DE-4113665-A1 (DE)
Title: Magnetically activated proximity switch for security alarm system - has reed switching element between reed contact and short circuit loop to suppress interference fields
Inventor: HIPP HANS MARTIN
IPC: H01H36/00
Filed: 1991-04-26
Abstract: The reed contact device uses a pair of contacts to monitor the closed condition of a door or window. The contacts are actuated by a magnet. An alarm contact pair (3) is located between the switching contacts and short circuit loop (2). Due to different response sensitivities of the reed contacts, the alarm contact will not close when the switch contacts are activated. Located between the two sets of contacts is pref. a magnetic screening element (4) that limits the effect of the switching magnet on the alarm contact. An alternative version uses two differently sized screening elements. ADVANTAGE - Reduces possibility of unauthorised manipulation.
Patent DE-4114573-A1 (DE)
Inventor: KRAFT HORST DIPL ING
IPC: H01H13/70
Filed: 1991-05-04
Abstract: A microcomputer-controlled electronic balance, especially shop or industrial balance, has a keyboard comprising a plurality of individual keys. The individual keys of the keyboard have different stroke heights. The individual keys within the keyboard can be combined in particular regions to form keyboard segments. The stroke heights of the individual keys can be set differently either individually or in particular regions or as a whole. <IMAGE>
Patent DE-4115295-A1 (DE)
Title: Load current monitoring circuit with overload and short-circuit protection - uses current-voltage converter supplying overload and short-circuit detectors
Inventor: GUENTHER JOACHIM
IPC: H02H3/00
Filed: 1991-05-10
Abstract: The load current monitoring circuit uses a current/voltage converter (3) associated with the current supply end stage (2) and supplying a voltage (UL) proportional to the load current (IL) to an overload detector (8). The latter compares the load current voltage (UL) with an overload threshold voltage (UU) related to the control voltage (Ust) supplied to the control stage (1) of the current supply circuit. The output of the overload detector (8) is fed to the control stage (1) which is used to bring the load current (IL) below the overload threshold. Pref. a short-circuit detector (5) alos receives the load current voltage (UL), responding to a short-circuit condition, to operate a transistor switch (T1) for disconnection of the end stage (2). USE - For DC motor supply circuit.
Patent DE-4119156-A1 (DE)
Title: Cleaning vehicle exhaust emissions with improved energy efficiency - by gasifying particles in a porous or honeycomb structure using a hydrogen@ oxidn. burner, then reducing and oxidising in catalytic converters
IPC: B01D53/94
Filed: 1991-06-11
Abstract: In the process the exhaust flows through a rotating cyclindrical porous or honeycomb structure to deposit particles; the particles are then gasified on this sector by H2 oxidn. burner; and the resulting H2 gas is then converted in two stages by downstream redn. and oxidn. catalytic converters with the residual gaseous exhausts. A suitable assembly incorporates an electrolyser (1) powered by electricity from the car generator or alternator, which produces H2 and O2. The H2 is supplied to a storage vessel (2) from which it is drawn as required for the particle separator and gasifier (4). The gasified particles pass then through the redn. (5) and oxidn. catalytic converters (6) to the vehicle exhaust pipe (7). USE/ADVANTAGE - The process removes harmful substances from motor car exhausts and converts them into unharmful substances at an improved level of energy efficiency.
Patent DE-4120714-A1 (DE)
Title: Carrier mechanism for wire stapler - involves stapling unit positioned on couplings of parallel crank gears
Inventor: BOETTCHER WINFRIED
IPC: B42B4/02
Filed: 1991-06-22
Abstract: In the wire stapler, the driver chain beneath the brochure carrier runs at even speed, and above and beneath the brochure carrier stapling components are synchronously operable. The carrier mechanism is located arrestably in vertical and horizontal guides running in relation to the material transport direction. The stapling heads (5) are located so that their positions may be varied on the coupling (7) of a parallel crank gear (9) running over the material carrier, and the switch (6) is lcoated in a position-variable manner on the coupling (8) of a parallel crank gear (10) running under the material carrier. Each of the cranks is connected to these couplings (7, 8) via rotatable slide bearings (12) are positioned at each end on the periphery of a control cruve (16). USE - For stapling together thin brochures in a bulk handling process.
Patent DE-4128112-A1 (DE)
Title: Locking device between engine shaft and gearbox shaft - has locking pawl engaging with locking ring to block displacement in adverse conditions
Inventor: FEIN PETER
IPC: E05F15/697
Filed: 1991-08-24
Abstract: The engine shaft (1) encloses the gearbox shaft (2) concentrically in the area of the locking device. When the engine rotates in one direction (12), the engine shaft (1) presses against the entrainment member (7) of the gearbox shaft. The engine shaft (1) is concentrically enclosed by the locking ring (3) against which the spring-loaded (5) locking pawl (4) is pressed. Between the gearbox shaft and locking ring there are at least pref. evenly spaced locking members (9). USE/ADVANTAGE - Locking device between engine and gearbox shaft.The drivable element can be adjusted in both possible directions, but can also be locked against displacement in the event of inadmissible actions.
Patent DE-4128610-A1 (DE)
Title: Press assembly with cushion assembly and auxiliary device
Inventor: KADIS PAUL M
IPC: B21D24/02
Filed: 1991-08-28
Abstract: During operation of the press assembly, the workpiece is held by upper and lower draw rings which apply pressure to opposite sides of the workpiece. A cushion assembly is operable to provide a yieldable force opposing movement of the draw rings.  An auxiliary device is operable to perform an operation on the workpiece while the workpiece is in the press assembly. A control valve is operable to a closed condition to block fluid flow from the cushion assembly to maintain the cushion assembly in a retracted condition during at least an initial portion of the operation of the press assembly from the closed condition to the open condition.
Patent DE-4134979-A1 (DE)
Inventor: LISSACK WILFRIED DIPL ING
IPC: F23D14/32
Filed: 1991-10-23
Abstract: The invention relates to a burner for combustion, which is low in pollutants, of a fuel (natural gas) with an oxidation gas. As a result of the oblong, in particular wedge-shaped design according to the invention of the outlet openings of the admission ducts for the oxidation gas, an NOx reduction is achieved as a result of increased waste gas recirculation and stepwise combustion.
Patent DE-4135148-A1 (DE)
Inventor: LEE YOUNG-TAEK
IPC: G05F3/20
Filed: 1991-10-24
Abstract: In a substrate or back-bias level sensor used for a semiconductor device, current for sensing the back-bias voltage (VBB) is prevented from directly flowing into the substrate (or the back-bias voltage terminal). The gate of a PMOS transistor 34 receives the back-bias voltage and its source is connected to ground Vss, so that an oscillator causes a pump circuit to perform a pumping operation to increase the back-bias voltage when the back-bias voltage (VBB) is lower than a predetermined voltage level; otherwise, the pump circuit is de-energized, thereby to reduce the back-bias voltage. <IMAGE>
Patent DE-4135471-A1 (DE)
Title: Connector cable to link PC to sewing machine - has logic level converter in 25 pin end connector, and TTL inputs on DIN plug at other cable end, to interface sewing machine
Inventor: HAMMERMANN JOACHIM
IPC: G05B19/042
Filed: 1991-10-28
Abstract: The connector cable has a 25 pin connector at one end which plugs into an RS232 interface of a PC, and a DIN plug with TTL outputs at the other. A logic level converter is mounted on a PCB in the 25 pin connector to match the respective logic levels of the PC and sewing machine. The converter includes two switching transistors (16,23) for the transmit lines (7,10) of the RS232 interface and the DIN connector respectively. Data transmission is carried out serially with a start bit, 8 data bits, and a stop bit. The start bit is always a logic level zero. ADVANTAGE - Simple design with few components, sewing machine does not require additional logic level adjusters.
Patent DE-4135500-A1 (DE)
Inventor: HOEPKER ELMER-CHRIST
IPC: F16B19/14
Filed: 1991-10-28
Abstract: The nail which is designed for fastening thin metal sheets has a conical shank (1) with a ballistic tip (2) at one end and a head (3) at the other end. A sleeve (8) arranged between a washer (4), which is arranged in the region of the tip (2), and the head (3) acts on said washer (4) such that all forces are transmitted onto the outer contour of the washer (4). Along with a cutout (6) and a surface depression (7), on that side of the washer (4) directed towards the tip (2), in particular the outer contour of said washer consequently comes to bear on the metal sheet to be fastened, as a result of which high transverse stress values are achieved. 
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Patent DE-4137047-A1 (DE)
Title: Tube made from flat metal strip - has strip first corrugated then wrapped around form tool and seam welded
Inventor: VILEM ECKHARDT
IPC: B21C37/06
Filed: 1991-11-11
Abstract: A long tube with a longitudinal seam weld is made form an initially flat strip (4) of metal with a width (B) which is equal to the circumference of the finished tube. Longitudinal corrugations are first formed in the strip so that a sinusoidal cross-section is produced. The dimensions of the corrugations are reduced in the longitudinal direction and the curvature of the outer corrugations is increased until the longitudinal edges (3) of the strip abut against each other at the weld point (C) and the strip is wrapped around a cylindrical tool to form the required tube with a seam weld being made along the abutting edges beyond the point (C). USE/ADVANTAGE - Forming of tube from a flat strip. The forming of corrugations before forming the tube reduces distortion in the finished tube.
Patent DE-4139943-A1 (DE)
IPC: G11B23/113
Filed: 1991-12-04
Abstract: A flap (3) designed as a U-shaped section made of a resilient material that can be secured to a corresponding cassette (1) by resilient snapping-in of its legs (5 and 7), is firmly clamped in a workpiece receptacle (25) for being mounted on the cassette (1), with its legs (7, 5) so spread apart that the flap (3) can be slid on the cassette (1) up to an inserting position, in which the legs (7, 5) can snap on the cassette (1) once they are released.
Patent DE-4143331-A1 (DE)
Title: Gas transport by surface diffusion - through narrow passages in solid body, esp. for atomic oxygen@ prodn.
Inventor: NEUHAUS DIETMAR DR RER NAT
IPC: B01D53/04
Filed: 1991-03-06
Abstract: (A) Transport of gases and/or gas molecule fragments, esp. saturated gas molecule fragments, is effected by adsorbing and dissociating gas on an inert solid body having passages of cross-sectional area selected such that transport of the fragments occurs exclusively by diffusion along the passage surfaces. (B) Appts. for gas transport from a first chamber to a second chamber, by the surface diffusion process (A), is also claimed. (C) Also claimed are processes, similar to process (A), for gas (molecular fragment) transport and gas (molecular fragment) loading of surfaces, in which the solid body is heated. USE/ADVANTAGE - The processes are esp. useful for providing a source of oxygen by O2 dissociation, adsorption, transport and desorption. Controllable selective transport of gas molecules or their fragments, exclusively by surface diffusion, is achieved to allow gas sepn. from gas mixts. or carrier gases.
Patent DE-4204307-A1 (DE)
Inventor: BIEKER DIETER
IPC: F16D55/226
Filed: 1992-02-13
Abstract: The rotary drive for a disc brake adjusting spindle, in particular for road vehicles, has on each side of a cam lever 4 rotatable about an axis (19) parallel to the brake disc a bracket (23) with angularly offset radial holes (24, 24') for the insertion of radial pins (17, 17'). The pins (17, 17') engage in the doubly bifurcated end of a driving lever (15) which is rotatable about an axis (20) which crosses the axis (19) at a distance and approximately at right angles. The rotary movements of the driving lever (15) are transmitted to a readjusting drive which forms part of an adjusting spindle which extends at right angles to the plane of the brake disc.   <IMAGE>
Patent DE-4206520-A1 (DE)
Title: Granulate contg. no alkali and with low residual moisture content
Inventor: SEITER WOLFGANG DR
IPC: C11D1/22
Filed: 1992-03-02
Abstract: A granulate contg. no appreciable amt. of alkaline component, contains (a) 10-42 wt.% of (i) alpha-sulpho-fatty acid alkyl ester or a mixt. of (i) and (ii) a sulphonate or sulphate anionic tenside, with (i) forming at least 10% of the final granulate, (b) 10-90% of inorganic builder, (opt. zeolite) w.r.t. any water-contg. substance, (c) opt. up to 45% of inorganic salt with neutral reaction in water, and (d) residual moisture content below 3%.
Patent DE-4210681-A1 (DE)
Inventor: BLASE GUENTER
IPC: F16C33/26
Filed: 1992-04-01
Abstract: A plastic plain bearing (1) has a separate insert (2) and sliding (3) region. The sliding region (3) is divided into individual segments so that it is in only partial contact with the shaft which it supports The segmental sliding region (3) has a smaller inside diameter than the insert region (2) and the insert region (2) has a larger outside diameter than the sliding region (3). The plain bearing (1) of the invention provides a support for a shaft virtually without clearance so that humidity and temperature have no effect at all on the antifrictionnal properties of the bearing.