baber/WOPTO huggingface dataset:
Patent DE-3127940-A1 (DE)
Inventor: FUCHS PETER
IPC: G07F7/06
Filed: 1981-07-15
Abstract: 1. Equipment for the securing of transport carriages (10), such as shopping trolleys, luggage trolleys or the like, which are according to intention to be used individually and on non-use to be settable together into a battery in space-sacing stacking position, with an unlatchable coupling for the fixed, yet selectably detachable connection of transport carriages respectively adjoining one the other in the stacking position, which equipment consists of a coupling socket (17) and a coupling plug (16), which is couplable therewith and has a detent element (20), which in the coupling position provides a fixed, yet detachable connection of the coupling plug with a coupling socket, and possesses a latching lock (22, 28), which is unlatchable only by a special unlatching means (32) which is constrained when coupling plug and coupling socket are spearated and freed again only on the renewed coupling of the coupling plug into a coupling socket, wherein a coupling plug and a coupling socket are fixedly arranged on each transport carriage in such a manner that, during the setting-together of the transport carriages into the stacking position, a coupling plug respectively fastened at the one transport carriage gets into a coupling position with the coupling socket fastened at the then adjacent transport carriage, characterised thereby, that the coupling plugs (16) and coupling sockets (17) are provided with contacts (25, 27), which on the coupling of a coupling plug arranged at one transport carriage (10) into a coupling socket arranged at another transport carriage apply the equipment (15) to a low-voltage mains, wherein the respective first of a number of transport carriages, which are coupled one against the other and set away in space-saving stacking position, is connected through the coupling socket or the coupling plug arranged at this to the low-voltage mains and that the freeing of the special unlatching means (32) after the coupling of a transport carriage to another transport carriage standing in the stacking position as well as the actuation of the detent element (20) and/or a locking bar (20) securing the latter in the detent position takes place electromagnetically out of the detent position.
Patent DE-3141677-A1 (DE)
Title: Process for the preparation of calcium carbide
Inventor: LASK GERT-WILHELM DR RER NAT
IPC: C01B32/942
Filed: 1981-10-21
Abstract: The invention relates to a process for the preparation of calcium carbide from a calcium-containing starting material and carbon in an electric-arc furnace. Gypsum is used as the calcium-containing starting material. The gypsum is first mixed with carbon, and the mixture is made into briquettes by the hot-briquetting method. The briquettes represent the feed of the arc furnace. In the arc furnace, the gypsum in the briquettes is first reduced to calcium sulphide at a temperature of 800 to 1200 DEG C. The calcium sulphide is then reacted with the carbon of the briquettes at a temperature of about 1900 DEG C to give calcium carbide, and sulphur vapour to be discharged. The sulphur can be further processed to give sulphuric acid.
Patent DE-3145330-A1 (DE)
Title: Attachment projector for television sets for rear projection of television images
Inventor: KOCH WALTER
IPC: H04N5/74
Filed: 1981-11-14
Abstract: The invention is based on the object of projecting television images from the screens of commercially available television sets through plane semitransparent rear projection screens distant from the attachment projector and television set as enlarged images. The object is achieved by an attachment projector which is placed in front of the television set. The attachment projector consists of a projector housing and a moving projector insert. In the projector insert, a Fresnel lens is located with the aid of which the projection is produced. The Fresnel lens is embedded in an intensity and rectification mask and in a contrast mask. To shorten the projection distance, the projector insert can contain a second Fresnel lens with wide-angle effect. At the television set, the television image is side-reversed and inverted by means of polarity-reversal switches as is required for rear projection. The attachment projector can also be used for projecting television images magnified on level surfaces with the appropriate switch position of the television image. When the polarity reversal switch is set to zero, the television set remains usable for normal direct viewing of the television image.
Patent DE-3147257-A1 (DE)
Title: Process for producing a fibre fleece and apparatus for its implementation
Inventor: BUERGER GERHARD
IPC: D21H13/38
Filed: 1981-11-28
Abstract: Process for producing a fibre fleece made of mineral rock wool, in particular of basalt rock wool, by the centrifugal method by admixing a certain amount of cellulose, a higher-molecular-weight organic binder in a substantial amount of water, precipitation of the binder onto the fibre and processing of the mixture to give a fleece and apparatus for implementing the process.
Patent DE-3147975-A1 (DE)
Title: Method for controlling and regulating an asynchronous machine
Inventor: HUSSELS PETER DIPL ING
IPC: H02P27/04
Filed: 1981-12-01
Abstract: In order to control and regulate an asynchronous machine which is supplied from an invertor with an impressed variable or constant DC voltage, it is intended to specify a regulation method in which the fluctuations of the flux and stator current space vectors are overcome. This is achieved in that a desired in-phase current value (iww) is specified in order to influence the torque, this value is compared with the actual in-phase current value (iwx) measured at the invertor input, and the regulation deviation is fed to an in-phase current regulator (6, 21) whose output signal prescribes the stator frequency ( omega 1) of the machine (1, 17) and is proportional thereto, and in that, if the voltage at the invertor input is variable, this is adjusted in accordance with the relationship  k( omega 1 x  psi  + I0 x R1),      omega 1: stator frequency    psi : desired flux value   I0: no-load current   R1: stator resistance   k: constant factor with respect to a constant voltage at the input of the invertor, by means of pulses (multiple switching on and off during one cycle of the machine voltage), the amplitude of the phase voltage of the machine being adjusted in accordance with this relationship. <IMAGE>
Patent DE-3150813-A1 (DE)
Title: Arc welding process
Inventor: NOMURA HIROKAZU
IPC: B23K9/127
Filed: 1981-12-22
Abstract: In the arc welding process in which a welding electrode is moved in a reciprocating manner inside the groove in the direction of its width, the movement of the electrode in the vertical or perpendicular direction is controlled in such a way that the arc length is always kept constant. The groove, which has a predetermined shape, is subjected to arc welding with predetermined welding speed and feed rate of the welding wire so that, when a half period of the reciprocating movement of the electrode is complete, the travel of the electrode in the direction of the height is integrated over time in order to obtain a cross-sectional area (So) which is described by the electrode, and in addition a reciprocating-movement stroke (Xo) performed by the electrode is obtained, and the cross-sectional area (So) and the reciprocating-movement stroke (Xo) are thus stored. When the next half period is complete, a cross-sectional area (S) and a reciprocating-movement stroke (X) are obtained in the same way so that the welding speed or the feed rate of the welding wire is changed and the cross-sectional area of the metal deposit is thereby changed to an extent ( DELTA S) which is established by the following equation <IMAGE> The deposit rate is controlled in accordance with the actual cross-sectional area of the groove and a welding bead of uniform height is thus produced. <IMAGE>
Patent DE-3200554-A1 (DE)
Title: Swing-barrier for securing platforms
Inventor: ROUX MICHEL
IPC: E06B11/00
Filed: 1982-01-11
Abstract: The invention relates to a swing-barrier for securing platforms, an outer door lying on the platform deck when the barrier is in the closed position. The outer door is bevelled from the bottom upwards and from the inside outwards, so that the upper edge of the door overhangs relative to the edge of the platform. <IMAGE>
Patent DE-3204454-A1 (DE)
Title: 4-Methyl-5-isopropylphthalic anhydride and process for its preparation
Inventor: HAFERKORN HERBERT DIPL CHEM
IPC: C07C63/15
Filed: 1982-02-09
Abstract: Process for the preparation of 4-methyl-5-isopropylphthalic anhydride of the general formula <IMAGE> by air oxidation of 1,2,4-trimethyl-5-isopropylbenzene with vanadium-containing catalysts, removal of the main product pyromellitic anhydride from the reaction gases and subsequent isolation of 4-methyl-5-isopropylphthalic anhydride from the residual gases, the air oxidation being carried out at temperatures of 380-410 DEG C, a 5-isopropylpseudocumene/air weight ratio of 1:50 to 1:100 and a throughput of 5 to 25 g of 5-isopropylpseudocumene/cm<2> of tube cross-section, the reaction gas being cooled in a known manner to 130 to 150 DEG C and filtered in order to separate off the pyromellitic dianhydride, the residual gas then being further cooled to 50 to 90 DEG C and washed with water at room temperature. This dissolves all impurities, and only the 4-methyl-5-isopropylphthalic anhydride precipitates does not dissolve but precipitates in the form of sludge, is filtered off, then dehydrated azeotropically by addition of entrainers boiling above 120 DEG C and is recovered by fractional distillation.
Patent DE-3206959-A1 (DE)
Title: Letter balance with fluid indicator
Inventor: HAAG GUENTER DIPL PHYS DR
IPC: G01G23/18
Filed: 1982-02-26
Abstract: The present invention relates to a letter balance with fluid indicator, in which a float consisting of an inner cylinder and of a number of spacers is guided in an easily moveable and tilt-free manner in an outer cylinder which is partially filled with a fluid, and relative changes of the fluid level in relation to the float, which are caused by weights placed on the balance, are to be read off on a scale.
Patent DE-3213394-A1 (DE)
Title: Gasifier for generating combustible gases from solid organic materials
Inventor: EBERT MANFRED DR
IPC: C10J3/44
Filed: 1982-04-10
Abstract: The invention relates to a gasifier for generating combustible gases from solid organic substances which do not have to be in a defined lumpy form. In the region of the gasification zone, the gasifier uses at least one lateral hollow nozzle rail (3) which has a concave surface (6). In this surface (6), a plurality of rows of nozzles (10) are arranged, through which preheated air flows into the interior of the gasifier. The jet directions of the nozzle rows intersect in a straight line running parallel to the hollow nozzle rail, so that very high temperatures can be reached in this region. The gasifier can be used in sub-stoichiometric and stoichiometric operation for gas generation or heat generation. <IMAGE>
Patent DE-3214575-A1 (DE)
Title: Combined manual optical reader for mechanical character recognition
Inventor: SEL CORNELIS VAN DER
IPC: G06V30/142
Filed: 1982-04-20
Abstract: The invention relates to a manual optical reader for data terminals for reading plain lettering and bar codes. It contains two scanning units which are arranged either next to one another or have a common optical system in which some of the light reflected from the code read out is extracted from the illumination for the OCR scanner for detecting bar codes.
Patent DE-3215761-A1 (DE)
Title: Pleat belt for curtains
Inventor: MARTIN GUENTHER
IPC: A47H13/16
Filed: 1982-04-28
Abstract: Fan-shaped groups of pleats are to be produced in a simple, rapid and efficient manner in a pleat belt for curtains, whose belt surface is preferably connected to the curtains by sewing, a plurality of groups of pleats being arranged along the pleat belt with spacing from one another, and the individual group of pleats being spread apart in a fan shape in each case so that the group of pleats on one side of the pleat belt takes up a larger longitudinal portion than on the opposite side. This is achieved according to the invention in that the pleat belt (1) is provided with at least two pull cords (2), running spaced apart and parallel to one another, which run in covered cord guides (3, 4) interrupted over the length of the pleat belt (1), the portions of the pull cords in the region of the group of pleats being exposed in each case in the region of an individual pleat between successive outlet openings (3a, 4a) of the cord guides (3, 4) such that, when the pull cords are tightened, the belt portions assigned to these regions are pulled together to form pleats, and that the mutually facing outlet openings (3a) of the cord guides (3) provided at both ends of the group (6) of pleats lie on straight stretches (7) which are inclined towards one another in each case and in mirror image relative to the longitudinal axis (5) of the pleat belt (1) in the stretched state of the pleat belt (1). <IMAGE>
Patent DE-3218279-A1 (DE)
Title: Automatic interval switch for windscreen wipers
Inventor: LAU MANFRED
IPC: B60S1/08
Filed: 1982-05-13
Abstract: The invention relates to an interval switch for windscreen wipers whose wiping intervals are switched automatically as a function of the density of the rain. In the advantageous embodiment, the interval switch is characteristically composed of an infrared light-emitting diode, a phototransistor and the corresponding switching electronics. These components are arranged in the housing in such a way that the radiated electromagnetic waves are reflected onto the phototransistor by the drops of rain on the windscreen. The windscreen wiper is then switched on by the phototransistor in conjunction with the switching electronics when the switching threshold is reached. At the same time, the device is attached on the inside of the windscreen in the space which can be covered by the windscreen wiper. The ''reflecting'' raindrops are therefore removed again with each wiping process. As a result, the automatic matching of the wiping intervals to the intensity of the rain is ensured.
Patent DE-3218488-A1 (DE)
Title: Process and apparatus for sorting particles according to different density ranges
Inventor: LIERKE ERNST-GUENTER DR-PHYS
IPC: B03B1/00
Filed: 1982-05-15
Abstract: For sorting particles of differing densities, these are suspended in a liquid, the density of which is chosen such that it lies within the density distribution of the particles. The suspension is passed in laminar flow into a standing ultrasound field with nodal surfaces, the flow direction running parallel to the nodal surfaces. After leaving the ultrasound field, the flow is divided according to the position of the nodal surfaces and the pressure maxima of the ultrasound field.
Patent DE-3218872-A1 (DE)
Title: Gear selection device for a vehicle gearbox, especially that of commercial vehicles
Inventor: CISOTTO ENRICO
IPC: F16H61/18
Filed: 1982-05-19
Abstract: Gear selection device for a vehicle gearbox, especially that of commercial vehicles, with at least one gear-change shaft (4) mounted so as to be rotatable and translatable in the gear case and intended for the engagement of individual gears arranged in series and with a gear lever (2) which interacts with the gear-change shaft (4). In this arrangement, a stop (10) is provided between the gear lever (2) and the gear-change shaft (4) for the purpose of locking the transmission in a particular gear. <IMAGE>
Patent DE-3220044-A1 (DE)
Title: Flexible conductor film
Inventor: BETZLER HANS LUDWIG DIPL ING
IPC: H05K3/00
Filed: 1982-05-27
Abstract: The invention relates to a flexible conductor film (1) which is constructed, for example, in rigid printed-circuit board regions (2, 3) having contact points (5). In confined wiring spaces, the contact points (5) may lie closely opposite one another, and may possibly touch, when the conductor film is bent. As contact protection, the conductor film (1) is constructed on the sides of the contact points (5) for example with two mutually opposite film flaps (6, 7) which can be folded over the contact points and cover them in an insulating manner. When a plug connection from the conductor film to an apparatus is separated, the film flaps can also be used as a pulling aid. The conductor film according to the invention is suitable as a wiring means for the production of electrical connections. <IMAGE>
Patent DE-3226596-A1 (DE)
Title: Immersion drum for the electroplating surface treatment of bulk goods which can be poured
Inventor: KOSIKOWSKI TOMASZ
IPC: C25D17/20
Filed: 1982-07-16
Abstract: An immersion drum is proposed, for making variable alternating contact, for the galvanic surface treatment of bulk goods which can be poured. This immersion drum (1) is placed on two angled or bent supporting arms (2), such that it can rotate, with fluid-proof bearings. These current-conducting supporting arms (21, 31) are in this case in each case constructed as tubes in which a further current conductor (23, 33) is arranged in an insulated manner, which current conductor is electrically connected to individual contacts (61 and 63) which are arranged coaxially over the circumference in the interior of the drum, at constant intervals. In this case, a controller (5, 6) which is synchronised to the drive (4) of the drum is provided outside the drum (1), via which controller the current is supplied in an alternating manner in each case to the individual contacts and contact groups (61-64). Such an immersion drum makes it possible to have four circuits which are isolated from one another and can in each case be reversed and disconnected by means of a controller which is located outside the drum. It is thus possible to reverse the polarity of the individual electrical contacts which are located in the interior of the drum, and the contacts which are in each case connected to form groups, a plurality of times at relatively short intervals, to supply them with different current intensities or voltages, or to hold them without power being applied.   <IMAGE>
Patent DE-3227452-A1 (DE)
Title: Control device for an adjustable hydrostatic unit
Inventor: BACKE WOLFGANG PROF DR ING
IPC: F16H61/46
Filed: 1982-07-22
Abstract: Control device for a hydrostatic motor which is connected to a pressure supply main in which the pressure is maintained at as constant a level as possible and the flow in which is sufficient in all cases to feed all the loads connected, and to the output shaft of which an auxiliary control pump serving as a speed signal transmitter is connected, in the delivery line of which a restrictor is arranged, the restrictor being adjustable in order to allow the arbitrary adjustment of the speed of the hydrostatic motor and the device adjusting to the set speed. In order to obtain a clear regulating signal and to provide the possibility of connecting a further control signal transmitter and a damping device for preventing hunting, the pressure built up ahead of this restrictor acts on a control piston, which is displaceable counter to the force of a spring and determines the position of the actuator of the hydraulic motor. <IMAGE>
Patent DE-3229225-A1 (DE)
Title: Process for energy-saving temperature control of a closed room, and apparatus for performing the process
Inventor: MOLLERUS JOSEF DIPL ING
IPC: A01G9/24
Filed: 1982-08-05
Abstract: The temperature prevailing in a closed room is controlled to save energy, in that a mass which stores heat is brought into contact with the air in the room and brought to the temperature of the latter, the temperature of the reservoir being if necessary made use of to control the temperature within the room. Air is sucked out of the inner room at a height different from that at which it is fed back again from the reservoir to the room. The ventilating pipes are provided at their free ends, in the room to be temperature-controlled, with flaps which are displaceable by the air stream. The design of the free ends of the ventilating pipes and the arrangement of the flaps provided there is such that the flaps respectively work in pairs, so that on one hand in each case an air inlet and air outlet are opened, and on the other hand in each case an air inlet and air outlet are closed, as long as the corresponding fan runs. <IMAGE>
Patent DE-3229928-A1 (DE)
Title: Device for cooling the superconductive rotor winding of an electrical machine
Inventor: INTICHAR LUTZ DR
IPC: H02K9/20
Filed: 1982-08-11
Abstract: The cooling device for a superconductive exciter winding in the rotor of an electrical machine, especially of a turbogenerator, contains a coolant reservoir space, which also rotates, having two phases of a coolant which is supplied from the outside, a coolant distributor system arranged on the external circumference of the winding, a radial coolant supply line, a heat exchanger between the coolant reservoir space and the coolant distributor system, a mixing chamber, which also rotates, having two phases of the coolant at a pressure which is comparatively less than that in the coolant reservoir space, and coolant paths which form a heat-exchanging connection to the winding, between the coolant distributor system and the mixing chamber. In order to be able to compensate for relatively large pressure differences between the coolant reservoir space and the mixing chamber and, at the same time, to ensure that the coolant can flow back without disturbance into the coolant distributor system, according to the invention the internal space (15) of the heat exchanger (13) forms a direct heat-exchanging connection with the coolant (A1') in the coolant distributor system (7) and is connected on its inlet side (16) to the coolant supply line (12) and on its outlet side (17) to the coolant distributor system (7). <IMAGE>
Patent DE-3233449-A1 (DE)
Title: Safety device for preventing unwanted unrolling of closures for openings
Inventor: HAAKE ANDRE
IPC: E06B9/84
Filed: 1982-09-09
Abstract: The invention proposes a means for securing against unrolling in which not only is a blocking effect achieved but also a braking effect induced, the braking effect being provided by a simple friction brake which lies inside the housing protected against extraneous influences.
Patent DE-3243353-A1 (DE)
Title: Mixer device for reaction components
Inventor: TAUBEMANN PETER
IPC: B29B7/76
Filed: 1982-11-24
Abstract: Mixer device for producing a mixture of at least two reaction components for the preparation of multi-component plastics, having a mixer chamber (12) which has inlet openings (13) for the individual components and an outlet opening (14) for the mixture, a control piston (1) which can be displaced in the mixer chamber to open and close the inlet openings and is connected to a working piston (2), as well as a pump (7) for supplying pressure medium to the working cylinder (3) and a pressure medium accumulator (19) for increasing the piston rate, which accumulator can be intermittently closed by a valve (18). <IMAGE>