Kabelmetal Electro Gmbh

Kabel-Und Metallwerke Gutehoffnungshutte Aktiengesellschaft

Kabelmetal Electro Gesellschaft MIT Beschrankter Haftung

Yabelmetall Electro Gmbh

Karl-Heinz Marx

Franz Grajewski

Friedrich Schatz

Wolfram Klebl

Peter Rohner

Frank Patzke

Arnold Vogts

Guenter Titze

Hermann-Uwe Voigt

A polymeric tube is extruded; one or more strands are wrapped around the tube, the strands having a polymeric core and a high strength helical fiber cover; a second tube extruded thereon; at least one of the tubes is cross linked; subsequently the composite tube wall is heated, expanded and cooled in the expanded state; the tube may be cut longitudinally before or after the heating/cooling.

Making a heat recoverable article

A flat, heat recoverable shrink object is comprised of a plurality of core strands placed in a parallel position and each having a polymeric, thermoplastic or crosslinked core around which is coiled a high tensile strength thread such as glass, metal, cotton polyamide etc. These core strands are combined with high strength threads extending transverse to the core strands and being e.g. interwoven or looped or just superposed; All these parts are embedded in a crosslinked, heated stretched and cooled-again polymer layer whereby the coiled helices are stretched accordingly. This flat object is applied to other objects for being heat shrunk thereon. The two high strength threads tear proof the object particularly during its being made.

Heat recoverable product

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.

Method for making heat recoverable product

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.

Sleeve coupling for a branching or connecting point of cables

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.

Protection of wooden posts and masts

In a ribbon consisting of a cross-linked plastic which can be shrunk by the action of heat and can be placed in the manner of a collar (2a) around an elongated object (4), and after the connecting together of the edges (3a, 3b) of the ribbon, can be shrunk onto the object (4) by the action of heat. The edge regions (3a, 3b) of the ribbon consist of non-cross-linked plastic and a connecting together (5) of the ribbon edges (3a, 3b) is effected by fusion welding.

Ribbon of a cross-linked plastic which is capable of shrinking upon the

A viscous sealing material is applied to a communications cable by being forced out of a container by means of a heatable pressure plate having a bore and a pump adjacent to the bore; the sealing material is conveyed by the pump through a conduit to a chamber, in which the sealing material is introduced under pressure into and around an already stranded cable core; the pressure plate includes a plurality of preferably helically coil electrical heating elements separated from each other and projecting therefrom for penetrating into the sealing material in the container when the pressure plate applies pressure to the sealing material so that it is progressively liquified and can be pumped out of the container.

Sealing communication cable

A super conductor is made by first shaping a copper strip carrying a niobium layer into a corrugated tube; thereafter tin is deposited on the tube which is coiled, hung from a ceramic rod and placed into an annealing furnace being evacuated thereafter, the interior of the tube is sealed off from the interior of the furnace. After, e.g. two hours of heating for causing the tin to diffuse into the niobium, a sufficiently thick layer of Nb.sub.3 Sn has developed and a cold inert gas is flushed through the tube to rapidly cool the tube while retaining it in the evacuated but no longer heated furnace.

Growing community of inventors

Garbsen, Germany

Karl-Heinz Marx