baber/WOPTO huggingface dataset:
Patent DE-3044539-A1 (DE)
Title: Power supply which produces two variable voltages - which are of different polarity and use chopper and blocking oscillator
Inventor: SCHICK LUDWIG
IPC: H02M3/156
Filed: 1980-11-26
Abstract: The power supply has two converters producing two variable voltages having different polarities w.r.t. a reference. One of the converters is a chopper (1) and the other a blocking oscillator (2). The chopper has a clock (le) connected to the resistor of the RC circuit (3b, 3c) belonging to the blocking oscillator. The capacitor in the RC circuit is at the reference potential. The RC circuit's tapping and a given voltage (4) are applied to the inputs of a differential amplifier (1) whose output controls the switching transistor (2a) in the blocking oscillator.
Patent DE-3048246-A1 (DE)
Title: Air-to-water heat exchanger - comprises plastic strips wound into tubular body
Inventor: HOELTER HEINZ ING GRAD
IPC: F28D9/04
Filed: 1980-12-20
Abstract: The air-to-water heat-exchanger is used for heat recovery from the air. It is pref. made of plastics strip material and is used in a heat pump. The strips are wound in a spiral, to form a roller-shaped body, and they can be of elastic material, with the individual turns held apart by distance pieces (2), typically formed by a corrugated plastics strip. The fan circulating the air can be mounted between tubular bodies on the inlet and outlet sides, the elastic material having a sound-damping effect.
Patent DE-3104396-A1 (DE)
Title: Method of mounting precious stones and piece of jewellery produced by the method
Inventor: EXNER URSULA
IPC: A44C9/00
Filed: 1981-02-07
Abstract: Published without abstract.
Patent DE-3115490-A1 (DE)
Title: Microsoldering and welding apparatus
Inventor: LANGE HEINZ
IPC: B23K3/08
Filed: 1981-04-16
Abstract: In a microsoldering and welding apparatus, the electrode plates are arranged such that an intermediate space (interspace) (which allows circulation of the fluid in the container) remains between the container base and the electrode plates and between the electrode plates and the container cover. This results in more effective dissipation of heat losses, and the electrode plates can be at a relatively small distance from one another, so that the dimensions of the overall apparatus, including the required transformer, are also reduced. The complete container is preferably constructed of plastic so that lateral power supply leads to the electrode plates can be inserted through the container walls without any special insulation measures. If, in addition, the interior of the container is divided by separating walls into a plurality of chambers, this results in better utilisation of the rectifier diodes which are required for rectifying the electrolysis current. <IMAGE>
Patent DE-3115937-A1 (DE)
Title: Process for producing virtually pure solutions of alkali metal sulphates or ammonium sulphates or of sulphuric acid from effluents
Inventor: VAJNA SANDOR DR
IPC: C01C1/244
Filed: 1981-04-22
Abstract: From a solution of sulphates and/or hydrogen sulphates and/or sulphuric acid, at least a part of the cations is precipitated, by the addition of alkaline compounds such as ammonium hydroxide, as sparingly soluble oxides or hydroxides and the solution is either evaporated to dryness and the sulphates formed are utilised (recycled), or it is fed to a strongly acidic cation exchanger, by means of which the alkali metal ions are bound and the remaining sulphuric acid is utilised. The precipitation may be complete immediately or may be effected stepwise by setting the pH accordingly. In the second case, the increase of the pH can be interrupted at a certain value and the solution remaining after removal of the precipitate can be treated with a chelate-forming cation exchanger which binds the remaining cations, at least in part. The ammonium ions can be removed from the exchanger by an acid of the type which forms thermally decomposable compounds with the ammonium ions, the ammonium ions, firstly, being recovered as ammonia and, secondly, the acid employed for regeneration being recovered.
Patent DE-3121676-A1 (DE)
Inventor: HERTENSTEIN ULRICH DIPL CHEM D
IPC: C07D235/06
Filed: 1981-06-01
Abstract: Substituted ethanols of the general formula   <IMAGE>   in which Ar1 is a carbocyclic or heterocyclic ring and Az is a triazolyl, benzimidazolyl, pyrazolyl or imidazolyl radical, are reacted with aryl hydrocarbons Ar2-H, in which Ar2 has the same meaning as Ar1, in the presence of an acidic catalyst, to give 1,1-diaryl-2-azolylethanes. The substances, which, apart from the imidazolyl derivatives, are new, can be used as biocides, in particular fungicides.
Patent DE-3128877-A1 (DE)
Title: Electron spectrometer for gaseous substances
Inventor: KRIZEK GEORG DR
IPC: H01J49/44
Filed: 1981-07-22
Abstract: In the case of an electron spectrometer for gaseous substances, having a housing (1), an analyser (34), a collision chamber (11) which is mounted upstream of the analyser, and a gas inlet (13) for the gases to be investigated, the collision chamber has openings (18 and 19 respectively) for the entry of UV light and/or monochromatic electrons and for the entry of the gas to be investigated, as well as openings (24 and 14 respectively) for the outlet of the electrons to be analysed and the outlet of the gas to be investigated, the gas inlet and outlet openings (16 and 14 respectively) being located opposite one another, and the gas outlet opening having cooling surfaces (12, 51) mounted upstream of it, outside the collision chamber. <IMAGE>
Patent DE-3129889-A1 (DE)
Title: Unwinding device for rolls, in particular for rolls of paper-like or wadding-like material
Inventor: DROOFF HEINER
IPC: B65H35/00
Filed: 1981-07-29
Abstract: The unwinding device consists of a rear wall, two side parts and a shaft arranged between the side parts and mounted in the side parts on an inclined plane extending obliquely downwards towards the rear wall. By this means, easy unwinding in the case of horizontal take-off of the material web and an optimum tear-off of the material web in the case of take-off of the material web taking place vertically or obliquely downwards is obtained without troublesome unwinding during the tear-off process.
Patent DE-3135510-A1 (DE)
Title: Device for hardening cores and/or moulds produced from sand with addition of hardenable binders
Inventor: MICHEL HORST-WERNER ING GRAD
IPC: B22C9/12
Filed: 1981-09-08
Abstract: In a device for hardening cores and/or moulds, which have been produced from sand with addition of hardenable binders and which are used for casting metal mouldings, a predetermined quantity of a liquid reactant, which effects or assists the hardening of the binders, being mixed with air and the resulting mixture being introduced with heating into the core or mould, whereupon the core or mould is flushed with compressed air free of reactants, a pressure-retaining valve (7) is provided upstream of the mixing region (24) in the path from the vessel (8) containing the liquid reactant to the mixing region (24), in order to solve the problem of transporting a pressurised reactant, which per se is gaseous at normal room temperature and pressure conditions, but is liquid as a result of being subjected to pressure, through a metering device in liquid form and converting it into the gaseous state for mixing with the compressed air only after it has left the metering device; the holding pressure of the pressure-retaining valve is somewhat higher than the operating pressure or vessel pressure of the reactant. Moreover, in this path, upstream of the pressure-retaining valve (7) a pressure transducer (20) as a metering device is provided which is preferably pneumatically controlled in accordance with the working pressure and delivers on its outlet side (19, 21) the pressure for overcoming the pressure-retaining valve (7) so that, during the working cycle, the reactant present in the liquid state passes with depressurisation and hence gasification to the mixing region (24). Preferably, the reactant is SO2 present in the liquid state in a pressurised cylinder (8) arranged with its outlet orifice pointing downwards. <IMAGE>
Patent DE-3142746-A1 (DE)
Inventor: POTH RAINER
IPC: H01H33/53
Filed: 1981-10-28
Abstract: 1. Device for monitoring the density of an electro negative gas in the casing of an electrical switching station, with the features : 1.1 in the casing (1; 10) there is arranged a vessel (2), comprising a bellows, which is in itself gastight, and which is under a predetermined internal pressure and has a floor (2b), 1.2 the position of the floor (2b) is variable in the longitudinal direction of the vessel (2) in the event of changes in density of the electro negative gas, 1.3 in the vessel (2) there is provided an internal stop (8) with which the path of the floor (2b) to the vessel ceiling (2a) can be limited, characterised by the features : 1.4 the floor (2b) carries an element (3, 12) that is located exclusively in the vessel (2) or in the casing (10), whose change in position occurring with a change in position of the floor (2b) is made outwardly visually perceptible, 1.5 in addition the floor (2b) of the vessel (2) is limited below at an adjustable distance by an external stop (7).
Patent DE-3146241-A1 (DE)
Title: Process for cleaning filter cartridges coated with pyrophoric dust
Inventor: KISCHEL REINHARD
IPC: B01D46/24
Filed: 1981-11-21
Abstract: The process relates to the cleaning of filter cartridges which are coated with pyrophoric dust and are used for the purification of waste gases and which are arranged within a filter housing divided into two chambers in such a way that the waste gas stream entering one chamber (raw gas chamber) can reach the other chamber (pure gas chamber) only by passing through the filter cartridge, by introducing an air stream into the pure gas chamber and under such a pressure that, with the waste gas stream switched off, the air stream can pass the filter cartridge in the direction opposite to that of the waste gas stream, the mixture of air and pyrophoric dust being ignited. The charging of the filter cartridge with air can take place in stages or at intervals, by periodically interrupting the air feed. With particular advantage, the process can be used for cleaning filter cartridges which are coated with pyrophoric dusts from electro-reduction processes.
Patent DE-3146571-A1 (DE)
Title: Sorting device
Inventor: BERGLUND GOESTA
IPC: B07B1/12
Filed: 1981-11-24
Abstract: Sorting device for sorting material in shafts, having an inclined grill (1) which is composed of a plurality of rods (12, 13) which are parallel to one another and of a frame (2) which bears the rods. Every second rod (12) is permanently connected to the frame (2) whilst intermediate rods (13) are releasably connected to the frame in order to permit variation in the size of the material falling through between the rods by removing or adding an expedient number of rods. <IMAGE>
Patent DE-3147920-A1 (DE)
Title: Process and device for the biological purification of waste water
Inventor: DRNEVICH RAYMOND FRANCIS
IPC: C02F3/12
Filed: 1981-12-03
Abstract: The invention relates to a device for the biological purification of waste water by means of a waste water purification plant having at least three tanks (141, 142, 170). The plant is operated so that the waste water is initially passed in one direction through the tanks, of which the first and second tanks act as aeration tanks and the third tank acts as final clarification tank, and so that after the activated sludge concentration in the first tank has fallen below a defined value the direction of flow of the waste water through the tanks is changed. In order to achieve a purification efficiency which is as high and uniform as possible in a simple and economic way, it is provided that the direction of flow of the waste water after the activated sludge concentration in the first tank (142) has fallen is changed in the following way: the waste water feed (102) into the first tank (142) and the aeration in the first tank (142) are stopped. The inflowing waste water is passed through a feed pipe (180) into the second tank (170), and the flow between the first and second tanks is stopped. After the activated sludge in the first tank (142) has settled, the waste water feed into the second tank (170) and the waste water removal through the line (115) from the third tank (141) are stopped. The inflowing waste water is passed through a line (103) to the third tank (141) and there aerated. The flow between the first and second tanks (142, 170) is started, and purified waste water is removed from the first tank through the line (116). After the activated sludge concentration in the third tank (141) has fallen, the procedure is repeated with respect to the third tank. <IMAGE>
Patent DE-3200577-A1 (DE)
Title: Device for quenching material being hardened
Inventor: KUEHN FRIEDHELM DIPL ING DR IN
IPC: C21D1/64
Filed: 1982-01-12
Abstract: A device for quenching material being hardened by immersion into a liquid, flowing quenching agent has a quenching agent trough, quenching shaft, immersion device and circulating device. The quenching shaft is made in the form of an air duct with an inlet nozzle and a constant section. It is adjoined by a horizontal partition which divides the quenching agent trough into an upper trough region and a lower trough region. The inlet nozzle of the air duct is connected to the partition in such a way that the constant section protrudes into the lower trough region. The quenching agent can be introduced by means of the circulating device from the lower trough region into the upper trough region and via the quenching shaft back into the lower trough region. In this way, especially elongate material being hardened can be uniformly quenched in the device. <IMAGE>
Patent DE-3202529-A1 (DE)
Title: Centrifuge
Inventor: GROSS JOHANNES
IPC: D06F37/04
Filed: 1982-01-27
Abstract: In a centrifuge, an inner drum (1) is enclosed by an outer drum (5), the outer drum (5) being driven and the inner drum (1) being radially adjustable in the outer drum (5) and tightly connected thereto. The intermediate space between the drums (1, 5) is completely filled with a fluid material which automatically compensates the unbalance forces occurring in the case of an unbalance of the inner drum (1). <IMAGE>
Patent DE-3204930-A1 (DE)
Title: Suspension device, in particular for components of mining machines
Inventor: MUELLER LOTHAR
IPC: B66C1/66
Filed: 1982-02-12
Abstract: The invention relates to a suspension device (1), in particular for components (2) of mining machines. This suspension device (1) is designed as an annular eye and has a threaded pin which engages in a threaded bore (3) of the machine part (2) to be suspended. It is provided with a cap screw (4), the shaft section (6) of which has a diameter which is enlarged in relation to the diameter of the threaded section (5). A ring (8) is mounted rotatably on the shaft section (6) and equipped with two diametrically opposite recesses (11) which run into the bore (12) of the ring (8). A U-shaped bow (13) engages in these recesses (11) with cylindrical ends (14) which are bent off at right angles and serves for attachment of a hoist. <IMAGE>
Patent DE-3205589-A1 (DE)
Title: Method and device for controlling the tension in tandem hot-rolling trains
Inventor: MORITA SHINICHI
IPC: B21B1/26
Filed: 1982-02-17
Abstract: The invention relates to a method and a device for controlling the tension to be exerted on a workpiece when the workpiece is being rolled in the roll stand of a tandem hot-rolling mill. A rolling torque in the absence of a forward tension is here stored in a storage device, more precisely at a point in time immediately before the leading end of the workpiece enters the following roll stand. The stored rolling torque is then temperature-compensated and compared to a rolling torque during a rolling operation of the tandem stand. The tension exerted on the workpiece by the following roll stand is then calculated, more precisely from the difference between the rolling torques which have been compared to one another, each of the roll stands then being driven in such a way that the tension calculated in this way is made equal to a reference value without the necessity of measuring the rolling force in each roll stand.
Patent DE-3205650-A1 (DE)
Inventor: KORONCAI ADAM ISTVAN
IPC: H01L23/40
Filed: 1982-02-17
Abstract: A power rectifier arrangement comprises at least one heat sink and at least one power rectifier. The housing floor of the power rectifier is at least partially designed as the input terminal. The secondary winding of the transformer is designed as a ribbon. The power rectifier serves as a fastening element which is screwed to the heat sink and with which the end of the ribbon is pinched between the housing floor and the heat sink. In case at least two power rectifiers are connected in parallel, the ribbon exhibits a plurality of superimposed, electrically-conductive layers corresponding to the plurality of power rectifiers and each of the electrically conductive layers is respectively connected to one power rectifier. An electrically-insulating and thermally-conductive layer is provided between two electrically-conductive layers. Advantageously, the heat sources which are formed by the transformer and the power rectifier are connected in parallel and, therefore, the heat is respectively directly dissipated to the heat sink.
Patent DE-3207711-A1 (DE)
Inventor: SCHELLER PETER
IPC: H01R25/14
Filed: 1982-03-04
Abstract: A connector designed to form a butt joint between two channel profiles, or between one such profile and some other member, comprises an elongate wedge piece with flanks diverging downwardly toward the channel bottom and a spring clip with similarly diverging legs having serrated lower edges and straddling the wedge piece over part of its length. A central web of the spring clip, spacedly overlying the top surface of the wedge piece remote from the channel bottom, terminates in a tongue whose tip enters a slit in that surface which it approaches at an acute angle of inclination. A screw with a shank traversing a slot in the web of the spring clip is threaded into the wedge piece and, upon tightening, forces the serrated edges into firm engagement with lateral channel walls while reducing the spacing of the wedge piece from the web with consequent decrease of the angle of inclination of the tongue which therefore exerts a longitudinal thrust upon the wedge piece whose opposite end is anchored to the member to be joined to the channel profile whereby this member is drawn into close contact with the adjacent end of that profile. The anchoring of the wedge piece to the other member may be effected by a second spring clip, symmetrical to the first one, whose tongue extends in the opposite direction.
Patent DE-3208591-A1 (DE)
Inventor: BURKHARDT HORST DR
IPC: G01B7/02
Filed: 1982-03-10
Abstract: A length measuring system of the type having a division on a scale which is scanned by a scanning unit in order to measure the relative position of a slide with respect to a bed of a machine is disclosed. In order to correct division errors and/or machine errors between a follower fastened to the slide and the scanning unit, there is arranged an electromechanical adjusting element between the follower and the slide. In a first preferred embodiment, this adjusting element takes the form of a piezoelectric element, which, in accordance with electric correction signals applied thereto, varies in length and thereby corrects the relative position of the scanning unit and the follower in accordance with the desired error correction course. Alternate embodiments employ magnetostrictive cores and electromagnetic coil arrangements to accomplish the desired error correction.
Patent DE-3211572-A1 (DE)
Title: Tilting table
Inventor: STANKOVICC-GANSEN MARYAN DIPL
IPC: B65G7/08
Filed: 1982-03-29
Abstract: The subject of the invention is a tilting or turning table for the handling of delicate articles, especially ashlars, preferably mantle-piece blocks, in which the hitherto very frequent destruction of these ashlars as a result of an excessively high clamping pressure of the clamping jaws acting on the blocks for handling purposes is reliably prevented, in that the clamping jaws are supported movably on clamping abutments by means of springs, so that the clamping drive acting on the clamping abutments generates a travel, executed counter to an increasing spring pressure, of the clamping jaws in relation to the clamping abutment, and a finely adjustable control limit switch switches off the clamping drive in response to a specific set travel or to a corresponding clamping force.
Patent DE-3213775-A1 (DE)
Title: Device for blocking a sewing machine in the position of rest
Inventor: SCALTRINI GIORGIO
IPC: D05B75/06
Filed: 1982-04-08
Abstract: The invention relates to a device for blocking a sewing machine in the position of rest. The sewing machine is located in a container and can assume two operating positions. To make handling easier, it is proposed that two lateral guides (G, G') be mounted on the container wall and that there should extend perpendicularly to these guides a frame (Z) consisting of four members (5, 6) which form a rectangle and three of which are connected to one another and, if appropriate, are connected to the sewing machine (S) by means of a supporting table, but are rotatable in relation to the fourth element. <IMAGE>
Patent DE-3215645-A1 (DE)
Title: Dimmer circuit
Inventor: LAGNY MICHEL
IPC: H02M5/257
Filed: 1982-04-27
Abstract: A dimmer circuit having a control input to which an alternating control voltage derived from an alternating feed voltage is to be applied, and having a sensor influencing this alternating control voltage. The sensor is a capacitive sensor influencing the amplitude of the control voltage and having an electrically insulating sensor plate.
Patent DE-3218924-A1 (DE)
Title: Ski stick with a device for preventing the theft of skis
Inventor: HEMPELT ERHARD DIPL ING
IPC: A63C11/00
Filed: 1982-05-19
Abstract: In order to avoid the theft of skis there is drawn, out of the handle of one of the two ski sticks, a steel cable which is fastened on a steel spring in the interior of the ski stick. Said steel cable is then wound around the skis and the post against which they are standing and is secured by means of a lock which is attached on the steel-cable end and is plugged into a bore in the ski-stick handle. The steel cable has to be wound, with little clearance, tightly around the skis and post, between the ski binding. Apart from posts, there are a number of other fastening possibilities. When the anti-theft device has been removed, the steel spring draws the steel cable back into the ski stick. <IMAGE>
Patent DE-3221126-A1 (DE)
Title: Device for securing objects on the roof of a motor vehicle
Inventor: UEBACH HORST
IPC: B60R9/058
Filed: 1982-06-04
Abstract: Device for securing objects on the roof of a motor vehicle by means of two flexible permanent magnetic plates which are to be arranged in the deformation area of the longitudinal sides of the roof, are connected by means of two spaced, essentially U-shaped cross members and comprise in each case a plurality of strip magnets extending in the longitudinal direction of the motor vehicle, the sustainers of the cross members being connected in an articulated fashion to the permanent magnetic plates and/or being adjustable in height.