Abstract: A method is disclosed for manufacturing an optical fiber cable element having plurality of optical fibers which are arranged with excess length inside a pressure-tight metal tube. Means are provided inside the metal tube for protecting the optical fibers and for longitudinal sealing. The optical fibers are first embedded in a soft or compressible compound to form a cable element core. The outside, diameter of the cable element core generally corresponds to the inside diameter of the metal tube in the finished cable and the optical fibers being present with excess length in the cable element core. A metal band is subsequently continuously formed into a slotted tube surrounding the cable element core. A distance remains between the cable element core and the tube. The slotted tube is welded together and the tube is drawn down onto the cable element core.

Abstract: A process for producing an aluminum coated metallic material comprises drawing an aluminum band having a significantly larger inside diameter than cross sectional diameter of the material concurrently with the material so as to form an open seam tube around the elongated metallic material. The seam of the open tube is welded so as to close the seam. An atmosphere or protective gas or reducing gas is maintained in an annular gap between the elongated metallic material and the aluminum tube. The diameter of the aluminum tube is drawn so as to reduce it by at least 20%. It is then drawn down a second time so as to coat the elongated metallic material. Finally, the cross section of the aluminum coated metallic material is reduced by at least 10%.

Abstract: For the production of glass fiber optical waveguides with increased tensile strength, these are drawn from a glass preform with a single-layer or multi-layer of additional sheathing of a glass material, with the material of at least the outermost layer in each case having a lower coefficient of thermal expansion as compared with the layer located underneath it or with the material of the preform. During the drawing process, the fiber is drawn from the preform in the cold state with increased tensile force of 70 to 200 cN.

Abstract: A process is indicated for producing an electrical connection between a ribbon line and a connecting line, which have at least two electrical conductors each. To relieve the strain on the conducting areas, the exposed ends of the conductors of both lines are placed in a support which is made of insulated material and is equipped with corresponding recesses. Subsequently, the conductors of the lines to be connected are soldered to each other. Finally, an insulation material cover, which adheres firmly to the support, is molded over the connections of the conductors and the ends of both lines.

Abstract: A device for attaching an electrical plug connector to the end of an electrical line containing at least one core is presented. In this device, the line is transported with a cyclic advance through processing stations in which the core of the line is stripped of insulation and a contact element is applied to the conductor exposed in this manner. To produce an extruded protective body for the contact element, with maintenance of the cycle of the device, an injection molding unit is provided with a carrier (17) and at least one extruder (18, 22). The carrier is equipped with at least three injection molds (19) and is rotatable about an axis (A). The injection molds 19 are provided with inlet openings (20). The injection molds are fastened to the carrier (17) whereby they are separated from each other in a circumferential direction, at an identical distance from the axis (A) of the carrier (17).

Abstract: Central is a nonstretchable, high strength thread that extends transverse to stretching, either of individual heat recoverable strands or of an embedding layer. The thread is either placed across plural heat recoverable strands, or plural threads are individually wrapped around the strands, or there is a plurality of helices on thermoplastic strings in a heat recoverable embedment, with further transverse high strength threads being interwoven with the helices.

Abstract: A sleeve coupling for a branching or connecting point of cables, particularly of communication cables with optical waveguides, which has a sleeve surrounding the branching or connecting point, and end bodies sealing the coupling in a liquid-tight manner at the ends. Each end body contains at least one through opening for leading a cable into the sleeve coupling or for leading the cable out of the sleeve coupling. The sleeve is a stable plastic tube with a longitudinal slot. The end bodies each are provided with a circumferential surface on which the sleeve is supported. The through openings are designed as radial slots adapted to receive the cables. A heat-shrunk collar surrounds the sleeve and the end bodies. In the entrance region of the sleeve coupling, there is provided an extension for the end body coated at least in part with a hot-melt adhesive. The extension is in contact, at least in part, with the inner surface of the heat-shrunk collar.

Abstract: To regulate welding current and power as a function of welding speed in welding devices for continuous longitudinal-seam welding of metal bands formed into a tube, a speed-dependent voltage value is added to an adjustable fixed voltage value.

Abstract: A cable stranding apparatus is described as having a plurality of stranding rotor units that are interchangeably coupled, in a locked manner, to a single rotor drive assembly of such apparatus. Each stranding rotor unit is designed to accommodate the dimensions of particular cable elements to be stranded. For this purpose, the stranding rotor unit for cable elements of a large cross-section has a plurality of large collets for accommodating the drawing of such large cable elements through the unit; while the cable stranding rotor unit for cable elements of a small cross-section has a plurality of smaller collets for drawing the smaller cable elements through such unit.

Abstract: To produce a blank mold for glass fiber optical waveguides with a core and a single or multilayer sheath, in which the core glass material is applied to the inner wall of a glass tube by chemical deposition from the vapor phase, the internally-coated glass tube is caused to collapse by temperature treatment, and this blank mold is finally drawn out into a glass fiber, the temperature treatment for collapse is carried out along the glass tube in accordance with a temperature profile that is determined by an upper region of maximum glass temperature along the treated section of glass tube (hot zone) and a lower region at the glass softening temperature (soft zone). The region of maximum glass temperature shows a largely uniform temperature level with a width along the section of glass tube that is approximately equal to the width of the region at the glass softening temperature.

Abstract: Method of manufacturing a flexible, high temperature superconductive cable by longitudinally imbedding a ceramic oxide material in a band source material, and then compressing same to form an elongated flat band, which in turn is deformed into a hollow tubular member whose longitudinal edges are welded before such member is corrugated. Further, there is disclosed a flexible, high temperature superconductive cable including a corrugated metallic wall having imbedded therein at least one superconductor of ceramic oxide material extending continuously therethrough.

Abstract: In a heat sealing operation for environmentally isolating joints and connections, a spring actuated clamp is utilized to provide positive engagement of the heat shrinkable material in the area between the members being connected. The clamp has two juxtaposed clamp arms with opposed convex clamping jaws. The clamp arms are resiliently loaded by a coil spring so the convex surfaces on the clamping jaws are placed into a clamping relationship on the heat shrinkable material.

Abstract: Central is a nonstretchable, high strength thread that extends transverse to stretching, either of individual heat recoverable strands or of an embedding layer. The thread is either placed across plural heat recoverable strands, or plural threads are individually wrapped around the strands, or there is a plurality of helices on thermoplastic strings in a heat recoverable embedment, with further transverse high strength threads being interwoven with the helices.

Abstract: A wooden post of mast which has been or is going to be sunk into the ground, is protected particularly in the transition zone between soil and outer atmosphere, by synthetic ribbon shrunken onto the wooden post carrying between it and the wood, upper and lower sealing material for sealing of the ribbon against the wood while in between the sealing material on the side of the strip facing the wood, a paste is included which contains boron or a boron compound; end portions of the strip as wrapped around the wooden post overlap, there being an adhesive strip for bonding and holding the two ends of the ribbon together and against the wood. Also, the connection maintains the sleeve as such after heat shrinking.

Abstract: A stripping die having a cutting edge formed by the intersection of a truncated pyramid outer surface and an axial bore inner surface; such surfaces first being cut until the surface roughness thereof is less than 1 um., and then being coated with a high hardness, high wear resistant metallic compound having a uniformly thin thickness of between 1 and 10 um.

Abstract: There is disclosed a method and apparatus for forming a metallic sheath about a conductor element comprised of a plurality of optical fibers whose length within the sheath is uniformly greater than that of the encompassing sheath. Such forming is achieved by continuously drawing a metallic strip and a conductor element into a forming apparatus, while heating a portion of the metallic strip for temporarily lengthening it as it is being formed about the conductor element.

Abstract: The integral absorbed local dose of ambient high-energy radiation is measurred by means of a moulded cord (1) made of extrudable materials, which is self-supporting or can be incorporated in an elongated object such as an electric cable, pipe or the like. These materials contain substances which undergo an optical change and/or modification of their molecular structure under the influence of a high-energy radiation. Sections (2) are taken from the moulded cord (1) and the radiaiton dose absorbed is measured.

Abstract: An apparatus is described for providing an electrical conduction path between two contact locations rotatable one with respect to the other. A flat ribbon cable having a plurality of electrical conductors and being wound in the manner of a coiled spring, is connected to the contact locations by way of connection lines serially connected to the ends of the flat ribbon cable. To protect the flat ribbon cable from mechanical damage at each of its ends, an end portion of each of the electrical conductors is serially connected to an end portion of one of a plurality of connection conductors of the connection line at a connection location, and a connection assembly is formed about the end portions of the serially connected conductors.

Abstract: There is described an apparatus comprising a flat ribbon cable including a plurality of electrical conductors connected between two contact locations rotatable one with respect to the other. At each end of the flat ribbon cable, there is provided a connection line including a plurality of connection conductors, and a connection assembly comprised of a receptacle assembly and a plug assembly. The receptacle assembly surrounds an end portion of the flat ribbon cable including uninsulated portions of the electrical conductors, while the plug assembly includes a plurality of spring contacts each attached to an end of one of the connection conductors. Upon insertion of the plug assembly into the receptacle assembly, the spring contacts compressively engage mechcially fixed, uninsulated portions of the electrical conductors, thus providing electrical contacts therebetween.

Abstract: Synthetic and metal are reclaimed from a synthetic-metal scrap combination by first comminuting the scrap particles in which metal and synthetic are not yet separated; grinding and pulverizing these particles to obtain a fluidized blend of synthetic fibers and metal spheres; and providing an air flow carrying the fibers and balls in a blend so as to obtain subsequent separation from each other.