baber/WOPTO huggingface dataset:
Patent DE-3031491-A1 (DE)
Title: Aromatic polyester with improved melt flow - comprises polyester prepd. from isophthalic and (or) terephthalic acid and aromatic di:hydroxy cpd. and pentaerythritol tetra:stearate
Inventor: TACKE PETER DIPL CHEM DR
IPC: C08K5/103
Filed: 1980-08-21
Abstract: An aromatic polyester compsn. with improved flow properties comprises 97-99.99 wt.% thermoplastic polyester (I) prepd. from aromatic dihydroxy cpds., isophthalic- and/or terephthalic acid, chain terminating agents and opt. branching agents and 0.01-3 wt. % pentaerythritol tetrastearate (II) as flow agent. Up to 45 mol.% of the ester gps. in (I) can be substd. by carbonate gps. (II) improves the melt flow of (I) without effecting transparency and colour of (I) and with substantially less deterioration of strength and heat deformation resistance of (I). The compsn. is used for mouldings e.g. injection mouldings on semi-finished extruded articles.
Patent DE-3031885-A1 (DE)
Title: Motor rotation for frequency control using PLL - has transistor periodically coupling motor to earth
Inventor: SCHWAB GUENTHER DIPL PHYS DR
IPC: H02P7/29
Filed: 1980-08-23
Abstract: The control system uses a phase-locked loop (1) receiving the motor frequency and a reference frequency and controlling a transistor (7) which can couple the motor (3) to earth. The output signal (Vi) of the phase-locked loop (1) is compared with and adjustable reference voltage (V1) with the difference being integrated to provide a signal (Vo) controlling the operating voltage for the motor (3). Pref. the output signal (Vi) of the phase-locked loop (1) is inverted and combined with a second adjustable reference voltage (V11) before comparing it with a second voltage (V12). The frequency resulting from this comparison is integrated to provide a signal (Vo) determining the operating voltage of the motor (3). The control system can be used for a drive motor for rotating a prism in a film scanning appts. for a t.v. camera.
Patent DE-3032124-A1 (DE)
Title: Metal workpiece polishing - using weakly abrasive ceramic bodies and polishing paste contg. abrasive, wax, corrosion-inhibitor and opt. brightener
Inventor: HINZ HEINZ-ERICH
IPC: B24B31/14
Filed: 1980-08-26
Abstract: In the abrasive pressure-grinding of metal workpieces, the workpiece, polishing bodies and polishing materials are rotated with water for a given time, rinsed with the addn. of detergent compsns. and dried. Novelty consists in (a) using weakly abrasive ceramic abrasives as the polishing bodies and (b) using a polishing paste contg., by wt., pref. 20-80% of at least one inorganic abrasive, 20-40% of at least one wax, 10-30% of at least one corrosion-inhibitor, opt. 10-20% brightener and opt. 0-15%, w.r.t. polishing material wt., of added solvent. All alloys can be polished equally well; further waste water treatment is simplified and the process is economical. Abrasion of polishing bodies can be reduced to 0.005%/hr., as opposed to 0.028 %/hr with Zn- or 0.014 %/hr. with steel polishing bodies.
Patent DE-3034252-A1 (DE)
Inventor: SCHWESIG GUENTER ING GRAD
IPC: H02P27/04
Filed: 1980-09-11
Abstract: Disclosed is an apparatus for operating a converted-fed asynchronous electric motor which comprises a flux computer for determining the position of the flux vector from the input values for the stator voltage provided by said motor by solving all the electrical quantities of the Park equations describing said motor in a given position of the rotor axis, taking into account the parameter values corresponding to the rotor resistance and the stator resistance of said motor whereby signals corresponding to the position of the flux vector and belonging to a solution, can be tapped from said flux computer; a converter control unit coupled to said flux computer and said convertor rectifier respectively, forming the control quantities for driving the converter rectifier from the determined position of the flux vector and from the nominal input values which fix the components of the stator current vector parallel and perpendicular to the flux vector.
Patent DE-3034785-A1 (DE)
Title: Schlosssystem fuer doppelzylinder-rundstrickmaschinen zur herstellung von strumpfwaren u.ae.
Inventor: PETRANEK MILAN
IPC: D04B15/32
Filed: 1980-09-15
Abstract: Auszug Die vorliegende Erfindung betrifft ein Schloßsystem für Doppelzylinder-Rundstrickmaschinen zur Herstellung von Strumpfwaren u.ä., mit mindestens einem Stricksystem zum Rücklaufstricken, welches ein linkes und ein rechtes Kulierschloß sowie ein dreieckförmiges mittleres Schloß enthält. Die Nachteile der bisher bekanten Vorrichtungen dieser Art, nämlich die Möglichkeit der Beschädigung von Garn oder gar Garnbruch werden durch die erfindungsgemäße Lösung beseitigt, deren Wesen darin besteht, dass in der Bahn der inaktiven gehobenen Nadelplatinen für jede Drehrichtung des Nadelzylinders auf dem mittleren Schloß hintereinander zwei Hebekanten zum Heben der Nadelplatinen in eine derartige Höhe ausgebildet sind, dass die oberen Enden der Nadelplatinen sich oberhalb der Abschlagplatinenhaken befinden und zwischen diesen Hebekanten auf jenem Schlossteil, der oberhalb des mittleren Schlosses angebracht ist, eine Kulierkante zum Senken der Nadelplatinen in die ursprüngliche gehobene Stellung ausgebildet ist.
Patent DE-3042150-A1 (DE)
Title: Absorbent for waste gas desulphurisation - is waste prod. contg. calcium from soda mfr. by solvay process
Inventor: FRIESKE HEINZ DR RER NAT
IPC: B01D53/50
Filed: 1980-11-08
Abstract: Waste prods. contg. Ca from soda mfr. by the Solvay process are used as absorbent and/or operating material in waste gas desulphurisation processes. The waste prods., esp. slurry, from the brine purificn. stage, waste from waste water treatment, e.g. sand, clarified liquor and/or esp. thickened suspesnion, or waste from NH3 distn. can be used. Overall environmental pollution can be reduced, the cost of the absorbent is favourable, the desulphurisation process is as efficient as usual and the waste prods. obtd. can also be used, e.g. in the building industry.
Patent DE-3042287-A1 (DE)
Title: Heavy-duty telescopic crane jib - has fly jib attached by pivot pins to main jib and gantry
Inventor: DIEDRICH HELMUT ING GRAD
IPC: B66C23/70
Filed: 1980-11-08
Abstract: The heavy-duty telescopic crane jib comprises a fly jib derricking on a main one and secured by tie ropes and gantry poles. The bottom section (6) of the fly jib (7) is attached by pivot pins (3,4,5) at right angles to its vertical centre line to the gantry poles (8,9) and to the main jib head (1), to allow the derricking motion. A mounting (2) can be fixed to the bottom section, accommodating the pins both for the poles and for the main jib head. The derricking bridge for the fly jib can be arranged to rest in a mounting on one of the poles.
Patent DE-3042514-A1 (DE)
Title: Hygienic and odourless fertiliser prodn. from poultry manure - by mixing, heating and drying, and grinding
Inventor: KARINIEMI PEKKA
IPC: C05F3/00
Filed: 1980-11-11
Abstract: Prodn. of fertiliser from poultry manure comprises (A) mixing the manure, (B) heating the resulting mixt. to 90-100 deg. C and drying and (C) grinding the prod. obtd. Pref. active charcoal (pref. in an amt. of 5-20, esp. 10-15 wt.%, dry basis) is mixed with the manure, and the mixt. is pref. dried to a moisture content of 5-10 wt.%. Pref. the mixt. obtd. is dried by passing through a drying drum connected with an oven, the drum being heated to 400-800 deg. C by the combustion gases of the oven. The dried prod. from the oven is pref. passed to a cyclone in order to remove steam, ammonia and other gaseous cpds. The ground prod. is pref. granulated by passing it in moistened state through a matrix. The process gives a hygienic and odourless product which is free from microorganisms and weed seeds. The prod. is easy to handle and is suitable for greenhouse use.
Patent DE-3043220-A1 (DE)
Title: Removing oil from rolling mill scale - in washing plant using sieves and hydrocyclone separator
Inventor: GAERTNER HANS
IPC: B04C9/00
Filed: 1980-11-15
Abstract: This is an addn. to 3120463 & 3146809, and describes the removal of oil from mill scale, which is fed into a mixing tank with a wash liq. A sieve is then used to obtain a coarse fraction (I) free from oil, and a fine fraction (II) contaminated by oil and wash liq. Fraction (II) is fed through a hydrocyclone to obtain an oil-free fraction (II), and an extremely fine fraction (III) contaminated by oil and wash liq. A clarifier is used to remove the oil-free fraction (III), leaving a wash liq. Oil is removed mechanically from the wash liq., which is then recycled to the mixing tank. Fractions (I,II,III) are allowed to drain and can then be used as a raw material, e.g. in steel mfr. Process has low energy consumption.
Patent DE-3048855-A1 (DE)
Title: Rotary switching system with operational accuracy - has priming contacts on control circuit to ensure each switch stage completion
Inventor: SPINNER GEORG DIPL ING DR ING
IPC: H01H63/20
Filed: 1980-12-23
Abstract: Rotary step switching unit driven by a pulsed rotary magnet or similar system. The object is a completed and correct switching stage accomplished with certainty under all operating conditions. The magnet coil (26) is connected into a control circuit (38) provided with a changeover switch procedure completed contact network (30,32) so that any interruption or false switching on the incoming supply (35) switching main control cannot cause false operation because the changeover unit (30,32) is used to prime the circuit after successful and complete operation of each stage.
Patent DE-3103751-A1 (DE)
Title: Process for the production of porous glass, porous glass-ceramic and porous ceramic sintered compositions
Inventor: KIEFER WERNER DIPL CHEM DR
IPC: C03B19/06
Filed: 1981-02-04
Abstract: The process for the production of porous articles from glass, glass-ceramic or ceramic sintered compositions comprises admixing a sinterable powder with an organic substance, which later burns and thus gives the pores. The mixture of the sinterable powder and the organic substance is compounded, pressed into a prespecified mould and pre-dried. In a first heating step, the organic substance is burnt, and in a second heating step, the material is sintered together.
Patent DE-3120608-A1 (DE)
Title: Self-aligning bearing
Inventor: WALTER LOTHAR
IPC: F16C19/26
Filed: 1981-05-23
Abstract: The invention relates to a self-aligning bearing, in particular for shafts of electric motors. The outer races of the bearings used are provided with retaining devices in order to prevent the rolling elements from falling out accidentally when the inner race or the like is removed.
Patent DE-3124938-A1 (DE)
Title: Method and apparatus for collecting a representative liquid sample from a quantity of liquid having different consistency zones
Inventor: THOENE ERNST
IPC: G01N1/20
Filed: 1981-06-25
Abstract: In the method, small quantities of liquid are removed from the flowing liquid at predetermined intervals of time and collected to form a representative quantity. In an apparatus for carrying out this method, the tube and the collecting container have a collecting device and the collecting device is connected to a control device which controls it.
Patent DE-3128353-A1 (DE)
Title: Electrical connector sheath and method for its production
Inventor: MARKS SIDNEY ROBERT
IPC: H01R13/658
Filed: 1981-07-17
Abstract: A connector sheath for a two-piece electrical connector, characterised by a sheath element and a length of a contact strip, arranged around the sheath element, first and second longitudinal edges of the strip being protected against outward displacement by parts of the sheath material which are constructed integrally with the sheath, and these parts abutting against the outer surface of the strip, on its edges.
Patent DE-3130285-A1 (DE)
Title: Spray gun with propellant-gas drive
Inventor: HAUPTMANN GERHARD
IPC: B05B7/24
Filed: 1981-07-31
Abstract: A spray gun with propellant-gas drive with a connection line between the propellant-gas tank and the liquid tank of the spray gun, which connection line opens into a cap engaging over the screw-thread connection of the liquid tank, there being provided above the connection of the connection line a slide valve which respectively opens and closes the propelant-gas feed and the liquid feed to the common nozzle and simultaneously moves the nozzle needle-valve to regulate the spraying rate, and a branch line with a smaller diameter, which passes approximately perpendicularly through the cap, leading from the liquid tank to the slide valve and being opened or closed by said slide valve. The object is to design said spray gun such that it operates completely effectively in virtually any inclination position. For this purpose, it is provided according to the invention for a wall (15) with a throttle point (16) to be arranged between a connection chamber (14) for the propelant gas and the feed opening from this chamber to the interior space (17) of the liquid tank (2). <IMAGE>
Patent DE-3131194-A1 (DE)
Title: Switching defect protection apparatus
Inventor: WALLER KARLS
IPC: H01H33/52
Filed: 1981-08-06
Abstract: Two rotary switches (18, 28) are provided which are preferably on parallel axes and whose switch shafts (17, 27) each have a locking disk (16, 26). In each case one stepping drive (1, 2) can drive each rotary switch (18, 28) via a safety catch (locking mechanism) (15, 25) and an elastic coupling (clutch) (4), on the precondition that the correct switching command is given, which initially causes the rotation of that rotary switch (18) in whose locking disk (16) the lock (4) does not engage, but on which the lock (4) rests. If this is the case, then the rotary switch (18) rotates, its locking disk (16) turns a latch to face the lock (4), into which latch the locking disk (26) of the other rotary switch (28) can now push the lock (4) if it is rotated with the rotary switch (28). At the same time, the lock (4) now blocks the locking disk (16) of the firstmentioned rotary switch (18). It is now possible to reverse the process. Contacts on the two switches can in this case be used for electrical locking of the rotary magnet stepping drives (1, 2). <IMAGE>
Patent DE-3137118-A1 (DE)
Title: Double cutter with a long stroke
Inventor: GRENZEBACH HANS
IPC: A01D34/135
Filed: 1981-09-18
Abstract: Cutting unit for grass and corn and the like, respectively with a movable upper cutter and a movable lower cutter, characterised in that, between the cuts made at one or the other dead centre, at least one further cut of an upper and lower cutter relative to one another is made.
Patent DE-3139461-A1 (DE)
Title: Upright head mounting
Inventor: SCHALDACH HERMANN
IPC: F27D3/02
Filed: 1981-10-03
Abstract: In this mounting for the refractory casing, consisting in cross-section of two or more part shells, of an upright for pusher furnace slide pipes under one another, in particular that of the upright head, in the butt joint region (5) of neighbouring part shells (1, 2) of the upright head (3), a common one-piece clamping stone (6) is inserted in each case in an undercutting manner into recesses (8, 9), corresponding to the shape of the clamping stone (6), in the part shells (1, 2), in order to prevent gaping of the part shells (1, 2) of the upright head (3) and consequently the collapse of the upright casing. <IMAGE>
Patent DE-3148748-A1 (DE)
Title: Device for influencing highly sensitive surfaces
IPC: A61B18/20
Filed: 1981-12-09
Abstract: In a device for influencing highly sensitive surfaces which possibly regenerate or become horny, in particular for carrying out a surgical method for influencing the myopia of the human eye, in which cuts that do not penetrate the surface of the cornea of the eye are made in the peripheral region of the cornea in accordance with a previously established pattern of cuts and the lines of cuts are purposely caused to scar, it is the object of the invention to render such influences on highly sensitive surfaces reproducible as often as desired, it being the case that the device according to the invention is also capable of recording the individuality of the surface to be treated, so that erroneous operation or erroneous performance by the person using the device is excluded as far as possible. This is achieved when the device (1) feeds the pattern (8) of cuts to an optical display device (11), said pattern being individually capable of improvement, if necessary, by the person using the device, and when at least one laser scalpel (15) guided by the device is provided which, under the control of a microcomputer (6), transmits the pattern (8) of cuts to the surface (2) to be treated. <IMAGE>
Patent DE-3201844-A1 (DE)
Title: Foundry mould installation for the production of two-part boxless moulds
Inventor: MUELLER GUENTER ING GRAD
IPC: B22C11/10
Filed: 1982-01-22
Abstract: In a foundry mould installation for the production of two-part boxless moulds with a closed rectangular moulding box circuit, a moulding station, a turn-over station for the bottom box and one or more machining stations for finishing work on the mould and a station for assembling the moulded top and bottom boxes and for stripping the moulding box from the finished mould are arranged in series and a casting section which receives the finished moulds is connected. To increase output, the top box and the bottom box are produced one after the other in a single moulding station with continuous interchange of the pattern for the top and bottom boxes, and the moulding stations and the assembly and stripping station each form a separate position in the moulding box circuit passing through them. In a modified embodiment, two moulding stations, each with a top-box and a bottom-box circuit are provided and these circuits have a common section between the assembly and stripping station and between the two moulding stations.
Patent DE-3202506-A1 (DE)
Title: 4-Ram saddle-type round kneading machine
Inventor: MUELLER BERNHARD DR ING
IPC: B21J7/14
Filed: 1982-01-27
Abstract: Round kneading machines are used to obtain reductions in the cross-section of rods and tubes. The use of the 4-ram machine allows higher reductions for each operating cycle.
Patent DE-3205857-A1 (DE)
Title: Material made of internally oxidised Ag-Sn-Bi alloy for electrical contacts
Inventor: SHIBATA AKIRA
IPC: C22C32/00
Filed: 1982-02-18
Abstract: A silver/tin compound produced by internal oxidation for electrical contact materials containing 3 to less than 5 % by weight of tin is improved in relation to the internal oxidation rate and, consequently, in relation to its contact resistance by the addition of 0.01 to 0.1 % by weight of bismuth. The compound may contain 0.01 to 0.5 % by weight of one or more elements of the iron family.
Patent DE-3206578-A1 (DE)
Title: Control of a line-commutated converter in two-quadrant operation with zero valves
Inventor: GOLDE ERNST DIPL ING
IPC: H02M7/757
Filed: 1982-02-20
Abstract: A line-commutated converter, which operates in two-quadrant operation in a circuit which saves reactive power and has zero valves, is intended to be controlled in such a manner that the switching on and off of the zero valves does not adversely affect the control behaviour of the converter. Continuous moving through the control characteristic, without discontinuities, is achieved in that   a) the delay angle ( alpha H) of the main valves calculated from the zero point of the commutating voltage is limited to a value  [150 DEG -(u +  gamma )max] as long as current is still flowing through one of the zero valves, gamma denoting the turn-off angle and u the overlapping angle during current transfer from the main valve to the zero valve, b) the width of the control pulses of the zero valves is held variably between 120 DEG  and 0 DEG , by limiting the duration of these pulses to a time ( alpha 1-30 DEG ) which is fixedly allocated to the line voltage, and c) the delay angle ( alpha H) for the main valves is enabled at values above  [150 DEG -(u +  gamma )max] if current is flowing through a main valve in the event of a corresponding signal of a higher-level regulator in each commutation group of the converter.   <IMAGE>
Patent DE-3208416-A1 (DE)
Title: Mixing device
IPC: B01F7/00
Filed: 1982-03-09
Abstract: A mixing device for mixing dry substances with an upright mixing container (2) and an agitator shaft (6) which is aligned vertically therein and bears approximately radially aligned mixing blades (19, 20, 21) and can be driven by means of a motor. The technical problem of the invention consists in avoiding temperature differences over the length of the mixing blades. Each mixing blade (19) has a continuous primary coolant circuit extending from the end of the hub to the end of the blade. Inside the agitator shaft (6), a secondary coolant circuit is provided. The agitator shaft (6) and the hub arrangement (15) constitute a heat exchanger. <IMAGE>
Patent DE-3211349-A1 (DE)
Title: Method for monitoring and identifying errors in electronic taximeters
Inventor: ADAMS JUERGEN
IPC: G07B13/02
Filed: 1982-03-27
Abstract: Different test methods for the functionality of the hardware components of the taximeter are described. Each test method gives rise to a differentiated error message (12 to 16). The method provides that the error message causes the display of the fare to flash (18) and that as an option after a determined adjustable time (24) or upon actuation of a specific key (21) the device is switched back into the free state (22), from which renewed switching on is not possible because of a blocking function (23). Since the individual test methods lead to a differentiated error message, it is also possible following the flashing of the display (18) to provide a display on the type of the error (28) that has arisen. Either by key actuation (26) or after a specific, settable time (27), this display is then switched back to the free state (22) and the blocked state (23) of the device, which prevents it being switched on again. <IMAGE>
Patent DE-3220753-A1 (DE)
Inventor: SCHAUSBERGER CHRISTOPH
IPC: F02B19/08
Filed: 1982-06-02
Abstract: A cylinder head of light metal for an air-compressing, self-igniting internal combustion engine which is provided with a vortex chamber that is delimited on the side of the main combustion space by an insert of a high heat-resistance material; the insert which preferably has an abutment collar is arranged in a stepped bore in the cylinder head bottom; a relatively high temperature is desired for the insert with the firing channel which is controlled by heat removal in particular into the cylinder head bottom; the abutment collar and the insert are spaced each exclusively within a section of the outer circumference facing a hot zone of the cylinder head bottom from the respective walls of the stepped bore; the spacing at the insert is smaller than the structural height thereof.
Patent DE-3221652-A1 (DE)
Title: Process and device for producing rubber/metal carriers for bearings
Inventor: OGGIONI ANGELO
IPC: B29C70/68
Filed: 1982-06-08
Abstract: The invention relates to a process and a device for preparing rubber/metal carriers for bearings, in which process the bearing and the metal elements of the carrier are introduced into a single mould, a metal element in contact with the bearing is deformed such that localisation between these two is produced and the mould is filled with non-vulcanised rubber and the non-vulcanised rubber is vulcanised. The invention also relates to the rubber/metal carrier for bearings obtained by means of the process and the device.
Patent DE-3222312-A1 (DE)
Title: Marine-propeller jet tube
Inventor: BUSS HERMANN
IPC: B63H5/14
Filed: 1982-06-14
Abstract: The marine-propeller jet tube for all types of marine propulsion units is a tubular channel or tunnel for accommodating the propeller. In this way, the power loss which results from the flow resistance is considerably reduced, the ratio of the useful power to the propulsion power is favourably changed and the efficiency is substantially improved. The advantages of the jet tube are a considerable saving in energy at the same power output, improved stability of the ship and a reduction in the cavitation erosion on the propeller.