baber/WOPTO huggingface dataset:
Patent DE-3939054-A1 (DE)
Title: Strip winding for heavy-current power supply transformer - is terminated with sheet metal components shaped for surface mounting or connection to pins on former
Inventor: NENDEL HARTMUT ING GRAD
IPC: H01F27/28
Filed: 1989-11-25
Abstract: The inner and outer ends (1a,1e) of the strip (1) of conductive foil (8) are bonded to the vertical limbs (11) of L-shaped sheet metal parts (9,10) whose horizontal limbs (12,13) terminate on connection components (14) with outward and downward protruding pins (6,7). A slot (15) of width 4 mm separates lateral components (5) extending from the lower cheek (3) of the former (2). The pins (6,7) are force-fitted into slotted holes, with solder if required. ADVANTAGE - Foil winding can be connected directly to conductive tracks of printed circuit board. Coil former is utilised fully, and mfr. can be automated.
Patent DE-4001923-A1 (DE)
Title: Sinusoidal curve representation method - moves curves along abscissa, causing rotation of spindle with pointers
Inventor: HERMANN ROLF
IPC: G09B23/04
Filed: 1990-01-24
Abstract: The method represents sinusoidal curves in conjunction with rotary pointers. One or more such curves at an axis are moved along the abscissae and an intersection ordinate-measuring scale travels over all of them. This movement actuates a rotary spindle (4), to which pointers corresponding to the curves are fixed. These show the angles between the curves and the phase difference, the projection of the pointers on the ordinates showing the instantaneous values of the sinusoidal oscillations. The latter are read off from a scale with a vertical axis.
Patent DE-4005349-A1 (DE)
Title: Device for holding and conveying plates - has openings and perforations and associates suction devices
Inventor: SCHOERGHUBER FRANZ
IPC: B65H29/24
Filed: 1990-02-20
Abstract: The device for securing and conveying plates has an adhesive belt (3) for the plates (8) running over rollers. The adhesive belt has perforations (4) associated with a suction device and suction chamber (7,7'). A two-way valve (10) controllable by leakage air only releases the path to the main suction pipe (44) when all the (second) openings (11,12) of the adhesive belt (3) connected to the valve (10) by leakage air ducts (14,15) are closed. USE/ADVANTAGE - Faster operating times for securing and conveying of plates.
Patent DE-4006670-A1 (DE)
Title: Tennis trainer for practising serves - has channel with conical bores and acoustic signal to indicate correct shot
Inventor: SCHWARTZ HEINZ ING GRAD
IPC: A63B61/00
Filed: 1990-03-03
Abstract: The serve trainer for tennis players has a height-adjustable ball catcher fitted just above and along the upper edge of the net by support elements. The ball catcher comprises a V-shaped longitudinal channel (23) which is open towards the serving end. The base (3) of the channel forms the aim area whose radius of curvature (R) corresponds to the radius of a tennis ball and whose channel arms (2) are measured and whose opening angle is selected so that they reflect a ball falling onto  same. An acoustic signal device which indicates a correct strike comprises a rubber elastic element (4) set just in front of the channel base and stretched out in the longitudinal direction of the channel. When deformed through the impact of the ball the signal device releases a whistle tone through air forced out between the openings (5,6). USE/ADVANTAGE - The device is low cost, produces a high intensive signal tone and ensures reliable return of the tennis balls.
Patent DE-4009918-A1 (DE)
Title: Microwave switch with hollow conductor connections contg. dust seals - to prevent entrance of dust during assembly
Inventor: RUFF GERD
IPC: H01P1/12
Filed: 1990-03-28
Abstract: A microwave switch has a housing (1) which has peripheral hollow conductor connections (2) and which contains a rotor (6) with one or more hollow conductor passages, the novelty being the provision of dust seals (3) which cover the entire cross-section of the individual connections (2). Pref. the dust seals (3) consist of (plexi)glass plates or thin, crumble-free, h.f. permeable plastics foils. ADVANTAGE - The seals prevent entry of dust into the switch on assembly of the switch or the hollow conductors, thus avoiding increased friction or even seizing of the rotor.
Patent DE-4016526-A1 (DE)
Title: Machine for winding continuous strip of flexible material - has mechanism which automatically replaces full reel
Inventor: INO-UE KATSUHIKO
IPC: B65H19/26
Filed: 1990-05-22
Abstract: A continuous strip (5) of flexible material is wound on to a reel by a machine which is provided with means for the automatic changing of the reels so that a full reel is replaced by an empty reel.  Each reel (R) has a core (2) and a second core (2) is mounted in a diametrically opposite position to the fully wound reel (R) on a rotatable disc (1'). When a reel (R) is fully wound, the disc (1') is rotated through 180 deg. and guide rollers mounted on swinging arms are moved so that the strip (5) is pressed against the second core.  The strip is cut transversely by a sliding knife (9) and the first reel (R) is removed and the winding of the core (2) of a second reel is automatically begun. USE - Winding of a continuous strip on to reels.
Patent DE-4018083-A1 (DE)
Title: Implement for sweeping up leaves - comminutes and compacts leaves in container
Inventor: OSTGATHE HEINRICH DIPL ING
IPC: A01G1/12
Filed: 1990-06-06
Abstract: The implement is used for collecting, comminuting and  compacting leaves. It has a sweeping roller (1) which passes the material to the beating roller (2), which comminutes the material and conveys it into the collection container (3). The implement is driven by an electric motor or an engine (4). USE/ADVANTAGE - The combined sweeper implement can pick up dry and wet leaves, comminute them and compress them into a container.
Patent DE-4020280-A1 (DE)
Title: Ascertaining necessary mixing period for concrete - by measuring load using damped harmonic vibration technique to minimise mixing time
Inventor: DOSE HARTMUT
IPC: B28C7/02
Filed: 1990-06-26
Abstract: A method of determining the necessary mixing time for cement involves using a load measurement based on the physical principle of a damped harmonic vibration.  The decay constant is used as a measure of the cement  homogenisation in the mixture using the relationship: (Zmaxn-Zmaxn-1)/Zmaxn. Alternatively, it can be used as a measure of pressure  resistance to describe the homogenisation process. The required mixing period is determined using a mathematical relationship describing a tolerance threshold for cement content  fluctuations and is used to control the mixing process. ADVANTAGE - Unnecessarily long mixing times eliminated.
Patent DE-4020639-A1 (DE)
Inventor: REIMANN WERNER DIPL CHEM DR
IPC: C08F218/02
Filed: 1990-06-29
Abstract: Copolymers of ethylene are prepared by polymerising ethylene with estes of vinyl alcohol in the presence of free-radical scavengers and in the absence of solvents and emulsifiers. The addition of free- radical scavengers allows the polymerisation temperature to be increased compared with a procedure in which no free-radical scavengers are used.
Patent DE-4029409-A1 (DE)
Title: Amplitude-coupled voltage source e.g. for polyphase motor
Inventor: GLEIM GUENTER
IPC: H03B28/00
Filed: 1990-09-17
Abstract: The voltages generated from a controllable source (10) driven by pulses from an electronic controller (11) are characterised by a common variation of the peak voltages, brought about by a single control signal.     Taps (13.0-13.K) on a single chain of components (12.1-12.K) are wired to input terminals of a switch (14) which selects three outputs (Ua1-Ua3) for amplification (17a-17c) and application to the windings of the motor (16). Operating parameters e.g. position and/or speed of the rotor are fed back (18) to the controller (11).
Patent DE-4031363-A1 (DE)
Title: Drill bolt for simple power tool application - has take=up shaft with break-off recess giving secure bolt location under high thread bending force
Inventor: AURICH JOACHIM
IPC: F16B25/10
Filed: 1990-10-04
Abstract: The bolt, esp. a drill bolt, has a bolt-head (5) and a threaded section (1,2,3).  It is designed such that it is held in place even in the case of increased radial bending forces on the thread. The bolt-head has a take-up shaft (6) formed as an integral part of the bolt, representing the clamped  length for usual boretools, and a break-off recess (7). USE/ADVANTAGE - Bolt is easy to use esp. with power-tools, giving a secure attachment.
Patent DE-4033045-A1 (DE)
Title: Oil drainage outlet in thin-walled sump -  has gap through which sludge can escape
Inventor: TOONEN JOHANNES-WILHELMUS
IPC: F01M11/04
Filed: 1990-10-18
Abstract: Oil outlet for the thin walled sump of a combustion engine having a nut (14) on the floor of the sump (11) into which a locking screw (15) and a seal (16) can be fitted. The floor of the sump is drawn inwards in the region of the nut and an opening (18) is provided whereby the seal and part of the screw encompass the transition zone (17). ADVANTAGE - Oil outlet which avoids the retention in the sump of a residue of particle-contg. used oil.
Patent DE-4038080-A1 (DE)
Title: Motor vehicle brake temp. monitoring system
Inventor: SCHMIDT GUENTHER DIPL ING DR I
IPC: B60T8/175
Filed: 1990-11-29
Abstract: The temp. monitoring system allows a warning signal to be supplied and/or reduction of the torque delivered by the engine and/or switching out of the anti-skid braking regulation upon a max, threshold temp. being reached.  The temp. increase during braking and anti-slip braking regulation and the temp. reduction during cooling phases are accounted for during the determination fo the brake temp.
Patent DE-4038414-A1 (DE)
Title: Outer coating removal appts. for prepn. of optical fibre - has two blade systems for graduated removal of primary and secondary coatings of fibre moved linearly in holder
Inventor: GROLL BERNHARD
IPC: G02B6/245
Filed: 1990-12-01
Abstract: The appts. includes blades (9-12) which cut into the coatings (1, 2) at the end portion of an optical fibre (3). The blades are movable in the longitudinal direction of the optical fibre to allow the graduated removal of primary and secondary coatings. A first blade system (10, 12) cuts through the inner (1) and outer (2) coatings of the optical fibre, while a second blade system, displaced from the first, removes only the outer coating (2). A base plate (15) has a holder (4, 5) for receiving the optical fibre and moving it along a linear guide, e.g. by a pneumatic drive. USE/ADVANTAGE - For preparation of end of optical fibre for coupling to optical connector. Coating is removed in two regions using single process.
Patent DE-4041623-A1 (DE)
Inventor: MATTHAEUS GOETZ
IPC: F23D14/78
Filed: 1990-12-22
Abstract: A nozzle (1) for a device for high-speed flame spraying of metallic, metallic-carbidic and/or oxide-ceramic materials, the nozzle (1) being fitted with a spraying medium feed, a gas mixture feed with combustion chamber and a cooled acceleration zone (4), is intended to provide a solution by means of which the temperature of the flame is adjustable, wherein the temperature-regulating fluid can be used directly in the high-speed flame spraying. This is achieved if, at least for a part of the cooling of the acceleration zone (4), gas-cooling channels (9) and/or gas-cooling annular spaces for ambient air as cooling gas with injection orifices (11) for drawing the cooling gas into the interior of the nozzle (1) are provided.
Patent DE-4102178-A1 (DE)
Title: Intermediate prod. for fibre reinforced plastic components prodn. - where fibre polymer mixt. is blended in air vortex chamber to give fibre batt which can be shaped
Inventor: EHNERT GERD
IPC: B29B7/90
Filed: 1991-01-25
Abstract: An intermediate prod in the mfr of fibre reinforced plastic components is made by heating a mixt of 95% thermoplastic polymer (remainder adhesion promoter and antioxidant) for 6-10 mins to just below the polymer mpt in a mixer and then cooling it to a maximum of half this temp. Cut fibre of 5-20 mm length is blown tangentialy together with the prepd polymer into a vortex chamber in the proportion fibre/polymer of 20/80 to 50/50. The fibre bundlesa are sepd and mixed with the polymer particles to give a random fibre batt.  Alternativw fibre lengths are 5-25 mm and 12mm and the pref fibre is glass fibre. The fibre batt can be given a shape by subsequently heating it on its surface for 2-3 min above 200 deg C while exerting a pressure of 40-50 bar and cooling for about 2 min to 20 deg C. After cutting the edges can be sealed by briefly heating them to 220-260 deg C. USE/ADVANTAGE - The  invention is a convenient way of preparing an intimate random mixt of fibres and plastic for further processing.
Patent DE-4103027-A1 (DE)
Title: Spot welding pincers - has holder for the components to be welded at least at one quill
Inventor: KUGLER LUDWIG
IPC: B23K11/31
Filed: 1991-02-01
Abstract: The spot welding pincers has a holder at least at one of the two quills to take one of the components being welded together between them. The holder for the component part to be welded, such as a welded nut, carries it in a keyed and/or force fit, matching the shape of the welded nut. The brim of the hat-shaped welded nut is supported by the end face of the holder, and the threaded section of the nut extends into the hollow interior of the holder with a clamping sleeve to engage the threaded interior of the nut. The holder, or at least a component of the holder assembly, has a spring support against the quill, and can be released from the quill. The holder components are electrically insulated against each other. ADVANTAGE - The appts. gives an automatic welding operation where a small plate section is to be welded to a larger section, with simple positioning of the components
Patent DE-4106110-A1 (DE)
Title: Metal container sealable rim
Inventor: SIEFERT FRIEDRICH DIPL ING
IPC: B65D21/032
Filed: 1991-02-27
Abstract: The can comprises a body (2) and a shaped rim (4), which extends inwardly transversely to the longitudinal axis of the body and which is tightly sealed by a tear-off foil (5). The rim (4) is encompassed by a body wall fold (7) extending out beyond the rim lengthwise of the container. By this means the foil is protected and the metal containers (1;16) can be stacked. The double fold (3) formed at the base of the metal container can rest within the body fold (7) of the metal container (1).
Patent DE-4113510-A1 (DE)
Title: Potentiometer for load adjustment of IC engine - is fitted in duplicate to shaft of throttle flap with provision for adjustment w.r.t. flap setting
Inventor: ANSCHICKS ROLF
IPC: H01C10/14
Filed: 1991-04-25
Abstract: A Bowden cable (3) from the accelerator pedal operates a lever (22) coupled to the shaft (2) of the throttle flap (1). A slip-ring pick-up (4) constitutes part of each potentiometer (8) whose reading of the actual engine speed is compared with a desired speed for electronic correction. A deformable boss protrudes into a rectangular opening in the pick-up (4) enabling the potentiometer (8) to be adjusted w.r.t. a setting of the throttle flap (1). Both potentiometers, pick-ups and the lever (22) are shielded (12) from contamination and damage. ADVANTAGE - Overall cost of potentiometer is reduced with its assembly time.
Patent DE-4116338-A1 (DE)
Title: Sewing machine fabric alignment - has working surface where mechanisms give X and Y positions to supply number of work-stations
Inventor: THOMASON DAVID G
IPC: D05B35/00
Filed: 1991-05-18
Abstract: The appts. to align and position fabric workpieces, for a sewing machine, has a mechanism to move the fabric along the X-co-ordinate axis along a path to a given X-co-ordinate position on a working surface, while a further mechanism positions the fabric at a given Y-co-ordinate position. A stationary alignment unit is in the path of the two alignment mechanisms, acting with them to give a simultaneous alignment of the fabric in the X and Y directions. Two sensors, one each at the X and Y position, are fixed in place. A further sensor registers the presence of the fabric on the working surface. The X and Y sensors and/or the fabric sensor are linked to a control. ADVANTAGE - The appts. gives a rapid and accurate alignment and positioning of the fabric, before it is passed to the sewing machine for stitching.
Patent DE-4117731-A1 (DE)
Title: Method of mining seams to defined preset depth of cutting
Inventor: GEUNS GUY DIPL ING
IPC: E21D23/14
Filed: 1991-05-30
Abstract: In the method of working coal seams during ploughing with a cutter (2), a face conveyor (3) moving along a face behind the cutter is advanced by the defined preset cutting depth. This advance is made by extension of self-advancing cylinders (4) pivotally attached at one end to the face conveyor and at the other end to face supports (5) disposed parallel to the face conveyor. The advance is controlled in dependence upon the piston stroke of the self-advancing cylinders, carried out in dependence upon individually defined partial strokes corresponding to the preset depth of cutting. After a predetermined maximum total piston stroke has been reached, the face support connected to the respective self-advancing cylinder is automatically disengaged, advanced by the maximum total piston stroke and then reset. The length of the partial strokes corresponding to the preset depth of cutting is increased by an amount to compensate an average mechanical clearance at the pivot points of the self-advancing cylinders.
Patent DE-4130646-A1 (DE)
Title: Method of setting off explosives - detonating second charge by light generated on detonation of first charge
Inventor: VOSS ALFRED
IPC: F42B3/113
Filed: 1991-09-14
Abstract: The explosives have an explosive charge connected in a housing (1). The charge comprises a first charge part (2) and a second charge part (3) spatially separated from each other. The second part (3) is set off by light produced by the detonation of the first part (2) which is passed over an air gap to a photo diode (7) in a current loop of the ignition system (6) of the second part (3). ADVANTAGE - Second charge is safely detonated and is not damaged by its effect. Power is divided between two charges and so can be kept low.
Patent DE-4134941-A1 (DE)
Title: TV receiver line deflector with drive transformer - has E=shaped or cup-shaped core with legs longer than width of coils wound on legs
Inventor: GOSEBERG WALTER DIPL ING
IPC: H01F38/42
Filed: 1991-10-23
Abstract: The line deflector for a TV receiver has a drive transformer (Tr). The primary winding (4) lies in the output circuit of an amplifier (2) controlled by line frequency pulses (1). The secondary winding (5) is connected to the base of the end-stage transistor (8). The core (3) is formed as an E-shaped core or a cup-shaped core with open leg ends. The length (L) of the legs (3a-e) is substantially greater than the width (B) of the windings (4, 5) on the legs. ADVANTAGE - Short switching time, increased power and less stray inductance.  Simple, effective and efficient device.
Patent DE-4135422-A1 (DE)
Inventor: RISSMANN ECKEHARD
IPC: F16L47/06
Filed: 1991-10-26
Abstract: A two-part, metallic clamping connector (1) for rigid pipes or hoses made of polymer comprises a cylindrical, ribbed supporting sleeve (2), which is bounded by a collar and onto which there extends a socket formed onto the end of the rigid pipe or hose, and a displaceable clamping sleeve (3), directed with its belled opening towards the socket, fitted onto the rigid pipe or hose. To establish the connection, the clamping sleeve is forced over the fitted-on socket, the bore of the clamping sleeve being designed such that all the cavities between the supporting sleeve and clamping sleeve are filled by the rigid-tube or hose material of the socket. Once the connection has been established, the clamping sleeve covers over the reduced-diameter collar fully or else only partially. <IMAGE>
Patent DE-4138168-A1 (DE)
Title: Cyclone separator for industrial dust extraction unit - has cylindrical housing with coaxial baffle insert dividing inlet airflow into two streams
Inventor: RINGLER BERNHARD
IPC: B01D45/12
Filed: 1991-11-21
Abstract: The dust extraction unit has an inlet duct (4) into a preliminary cyclone separator (5) which is connected to an air exhaust fan unit via a filter chamber. Dust particles (19) drop into a collection tank below the separator, whose housing has an upper cylindrical part (7) joined to an inverted, truncated cone lower part (6). Co-axial to the separator housing is a flow divider insert (15) which extends across the section of the inlet duct and divides the incoming flow into two streams (14`, 14") which flow round the divides and meet opposite the inlet with a fall in air velocity. The sharp fall in velocity and change of direction in air flow allow the dust particles to separate out without a strong abrasive action on the housing walls. ADVANTAGE - Longer equipment life and greater separating efficiency.h
Patent DE-4139438-A1 (DE)
Inventor: SOELKNER GERALD DR
IPC: G01R31/265
Filed: 1991-11-29
Abstract: The invention relates to a process in which a laser beam (TB1) from a laser source (LS) is divided into a test beam (TB2) and a reference beam (RBI). The splitting angle (A) and hence a distance (V) between the test and reference beams is matched by altering the acoustic frequency ( DELTA f) of a control signal (S) at an acoutic-optical Bragg cell (BC) to the distance (W) between a target region (D1) and a reference region (D2) allocated to the target region in a semiconductor body (SUB). Reflected portions of the test and reference beams with their phase relation affected by the charge carrier density in the target and reference regions are brought together to form a measuring beam (MB). A measuring signal (M) is detected from the measuring beam with the aid of a photodetector device (PD) and the measuring signal is processed with a reference signal (REF) into an output signal (OUT) which is a measure of the difference in charge carrier density between the target and reference regions.
Patent DE-4140113-A1 (DE)
Title: Adaptor for contactless ultrasonic level measurement in liquid gas cylinder - is screwed onto gas cylinder in place of shut=off valve, which may be screwed onto side of adaptor
IPC: G01F23/296
Filed: 1991-12-05
Abstract: The measurement adaptor (8) which is screwed onto a gas cylinder instead of the shutoff valve (3) which is then screwed into the side of the adaptor. Alternatively, the shutoff valve can be integrated into the measurement valve housing. The level of gas in the cylinder is determined using the conventional ultrasonic pulse-echo method. Ultrasound is introduced into the gas cylinder without losses at the measurement adapter walls using acoustic lenses or prisms. USE/ADVANTAGE - E.g. for use in large-scale horticulture where CO2 gas is applied to plants.  Gas level measurement is achieved without modifying gas cylinders.
Patent DE-4140380-A1 (DE)
Title: Small size safety bicycle - has short wheelbase and incorporates luggage rack and stand
Inventor: TUPATH WALTER DIPL ING
IPC: B62J11/00
Filed: 1991-12-07
Abstract: The safety bicycle is multi purposes. It is of short construction, and has a low centre of gravity. It has a luggage rack (40) on front and rear wheels (20,21), and a rain protection device (80). It also has conventional accessories, e.g. mudguards, lamps, dynamo (14), bell (10a,b), and pump (11). In addition, the bicycle has a two-legged stand with ground adjustment (30); gear changer (70); a parking light system wh#ith accumulator (12); fixed or pivoted side supports (60); carrier handle (9); and a tool-and carrier bag (65). USE/ADVANTAGE - Multipurpose small safety bicycle with low centre of gravity.