Abstract: A double walled pipe elbow with an intermediate space between an inner pipe and an outer pipe is formed by joining the ends of a straight inner pipe and a straight outer pipe. The two pipes are bent into a desired shape and then placed in a shaping recess in a shaping tool. Seal plugs are placed at the opposite ends of the pipe elbow. In the sealed condition, a pressurized medium is supplied through at least one end seal plug into the inner pipe and between the inner and the outer pipe for expanding the outer pipe into surface contact with the shaping recess.

Abstract: A viscous coupling for a motor vehicle which may be connected or disconnected under load and which, in a reliable and interference-free way and with a short delay time, selectively permits the transmission or interruption of the driving force relative to the wheels of the rear and/or front axle, including a locking ring which is axially movable between two switching positions and may be moved into one of the two switching positions against the returning force of a spring by a force-actuated setting member which includes a firmly connected annular tongue which consists of a low-remanence ferromagnetic material and which may be transferred in an annular gap selectively loaded with a magnetic flow and formed by a soft iron core, with the axial length of the annular gap being greater than or equal to the axial distance covered by the setting member between the two switching positions.

Abstract: A surface acoustic electric wave device of the type comprising, over a large face of a planar piezo-electric substrate, a first row of parallel conductive fingers having an individual geometry chosen and distributed according to a chosen distribution arrangement along this row, a second row of parallel conductive fingers having an individual geometry chosen and distributed according to a chosen distribution arrangement along this row, the second row being interspaced from the first so as to allow a propagation of surface acoustic waves between the fingers of the first row and those of the second, which imparts to the device spectral and/or temporal characteristics defined by the acoustic propagation and the frequency selectivity due to the geometry of the fingers.

Abstract: A method and an apparatus for transporting commodities, especially liquid commodities above their congealing temperature in a tanks or tank containers. At least a partial flow of hot exhaust gases of an internal combustion engine of a tank vehicle or tank container vehicle flows through a heat exchanger through which passes the heat transfer oil in a closed cycle and yields heat to the heat transfer oil and an electrically heated heat exchanger yields heat to the heat transfer oil and the heat transfer oil transfers heat to the commodity through a tank or tank container wall heat exchanger. The heat transfer oil is conducted in a closed cycle in a regulation circuit including the heat exchanger through which the exhaust gas passes and the electrical heat exchanger.

Abstract: The invention concerns a microcircuit card of the kind comprising:a communication interface;an internal memorypa wired processor unit allowing this internal memory to be addressed from the outside.According to the main characteristic of the invention, provision is made for a secret internal memory zone not addressable from the outside, and the processor unit comprises a wired circuit capable of using the contents of the secret memory for establishing a first serial cryptographic function of two operands and means reacting to the interrogation of predetermined addresses of the internal memory, accompanied by a keyword by applying this keyword and the output of the internal memory as operands of the wired circuit, whilst the output of the wired circuit is applied to the interface.

Abstract: There is a tap whose thread portion 2 forms a cutting section 5 and a guiding section 6 and is provided on a plurality of adjacent thread teeth of the cutting section 5 with a relief 8. It is desirable that a further machining measure be provided for the tap whereby favorable compromises can be obtained with respect to guidance and friction. This is achieved in that the relief 8 of the adjacent cutting-section 5 thread teeth--seen in a longitudinal direction--have a clearance angle which varies increasingly or decreasingly. Varying the relief enables the requirements with respect to avoiding incorrect tapping and avoiding friction-generated cold welding to be met and matched up in an improved manner.

Abstract: A needle for carrying out operation with flexible cords, roves or threads, for fabricating armatures by a multi-directional weaving, the needle having an elongated body having a free end of the body, and an eye being a closed loop which extends outside the body of the needle and which is shaped and disposed relative to the body so as to avoid laterally projecting beyond the space defined by the width of the elongated body. The loop is delimited by two parallel side walls which extend transversely relative to the elongated body from a side of the elongated body and by a pin for guiding the cords, roves or threads which interconnects the two side walls.

Abstract: A graduation carrier of plastics material with a graduation structure, particularly for a photoelectric position measuring device. The graduation structure is a specially prefabricated lamina which is integrated with the graduation carrier with positive engagement. The free surface of the graduation structure and the free surface of the graduation carrier are located in a plane.

Abstract: In a rotating head type reproducing apparatus of the kind reproducing an information signal using rotating heads from a record bearing medium on which a plurality of pilot signals of different frequencies are recorded in rotation along with the information signal, one in every recording track in a predetermined sequence, the levels of pilot signals reproduced from mutually adjacent tracks by a first rotating head are compared with each other; and the result of comparison is used in detecting the tracking error of a second rotating head which is reproducing the information signal.

Abstract: A cable splice assembly for connecting and branching cables, particularly telecommunication cables. The cable splice assembly includes a splice assembly pipe and sealing members with cable passage openings for insertion in the end faces of the pipe sleeve. The sealing members are transversely divided into sealing member halves which include semicircular sealing elements which line the cable passage openings. The sealing members each have two cable passage openings which are spaced from each other at a predetermined distance in longitudinal direction of the cable. An injection chamber suitable for all cables is provided between the front and rear cable passage openings. The sealing member halves have tongue and groove connections in the abutting edge surfaces. The sealing member halves can be clamped to each other. Individually removable bearing shells are placed in the cable passage openings in order to adapt the openings to different cable diameters.

Abstract: A high-speed rod and wire mill, particularly for single-strand, twist-free rolling. The mill includes a roughing train, at least one intermediate train and a subsequent finishing train, wherein each of the trains includes several rolling mill stands or rolling units. A finishing stand set may follow the finishing train. For a minimized series of passes in each train section, the roughing train has a crane tool for exchanging the rolls, the intermediate train has a manipulator for exchanging the rolls and the finishing train has a quick-exchange device for changing the rolls and possibly an additional manipulator. All rolling mill stands or rolling units in the individual train sections have overhung-mounted and removable rolls, so that the yield of the mill is increased.

Abstract: A method for the production of non-fraying edges of a double woven fabric on a double-rapier loom, using a double shed crossing device comprising per shed a needle carrier, an oblique slot plate and a positioning device, characterized in that, in case of alternate weft insertion in the upper and the lower shed, a first shed positioning with crossing threads being guided between the stationary needles remains simultaneously for the upper shed and the lower shed over two successive and alternate wefts, with the preparation of the changeover of the crossing thread and the stationary thread for the next shed positioning.

Abstract: A video signal processing apparatus, for processing a video signal including line-sequential signals, is arranged to detect the kinds of information included in the line-sequential signals obtained during each horizontal scanning period; to collect, for every predetermined period, statistics of a detection output thus obtained; and to rearrange the line-sequential signals into simultaneous signals in accordance with a control signal generated on the basis of the statistics.

Abstract: Apparatus for producing press-molded articles having a plurality of cavities therein includes a mold cavity which can be filled with a particulate molding compound, which mold cavity contains rods sheathed with expandable tubes which can be expanded by means of a fluid under pressure conveyed into the space between the rods and the tubes: this causes compaction of the molding compound to form the pressed article, which can be removed from the mold after reduction of the fluid pressure to allow detumescence of the expandable tubes and withdrawal of these from the mold cavity so that the mold cavity can be opened to remove the shaped pressed article.

Abstract: A device for receiving data cards, including an essentially square-shaped housing; a guide chute for the data cards, the housing having a loading/output slot which forms an access to the guide chute; arrangement for read-in and readout of data from the data cards; mechanism for locking and unlocking the data cards, including a movable stop provided so as to cooperate with an end side of a loaded data card pointing inwards into the device; a gear connection for connecting the at least one latch with the movable stop; and a safety catch engageable with the geared connection, the at least one latch being arranged so as to embrace an outwardly pointing end side of the data card when the data card is in an end position in the device, the geared connection including a slide having one end connected to the movable stop for the inwardly pointing end side of the datacard, and a second end provided with a set of teeth the latch having a toothed quadrant and being rotatable supported and meshing with the set of teeth of

Abstract: In a facade construction of high-rise structures, a corresponding layer construction is provided for suppressing reflections of incident electromagnetic waves, particularly of radar waves. For this purpose, an electrical resistance layer which has a surface resistance in the range of 300 to 1200 .OMEGA. is arranged at a distance from a reflecting surface. The distance between the reflecting surface and the electrical resistance layer is approximately 1/4 of the wavelength in the propagation direction of incident electromagnetic waves to be suppressed.

Abstract: A method and device for inserting radioactive radiation sources into applicators and for withdrawing the radiation source and depositing them in at least one shielded loading and/or storage station. To remove a radiation source from the loading and/or storage station a traction wire with a coupling effective in the direction of traction is advanced via a fork and a switch into the loading and/or storage station, coupled with the radiation source and withdrawn as far as a stop where it is uncoupled and the traction wire is withdrawn through the fork. To introduce the radiation source into the applicator, on the other hand, a thrust wire having a coupling effective only in the direction of thrust is brought via the fork up to the radiation source and, carrying the radiation source with it, is advanced via the switch into the applicator and withdrawn again leaving the source in the applicator.

Abstract: An arrangement for discharging medium consistency pulp in connection with diffeent pulp treatment devices or apparatuses, the arrangement having a mass chamber, which is arranged between a screw discharging pulp from a pulp treating apparatus and a centrifugal pump transferring the pulp further so that both the screw and the pump are substantially at the same horizontal level with the pulp treatment apparatus. Thus, the presence of a drop leg having a height of several meters is prevented, whereby the centrifugal pump has no need to pump the pulp upwards back to the height of the pulp treatment apparatus.