EP 0054784 B1 19850410 - OVERHEAD CABLE WITH TENSION MEMBERS
Title (en)
OVERHEAD CABLE WITH TENSION MEMBERS
Publication
Application
Priority
CH 937480 A 19801219
Abstract (en)
[origin: ES8303800A1] In known overhead telephone cables comprising two individual encased and stranded conductors, each consisting of a plurality of copper wires for the transmission of signals, and steel wires for load bearing purposes, the problem of relatively high susceptibility to corrosion at leakage points in the casing due to water penetration is solved by replacing the steel wires with bundles of stretch-resistant synthetic fibres, e.g. aromatic polyamide fibres, and the tendency of spirally wound synthetic fibres, or bundles of fibres, to shift towards the center of the conductor when the cable is under tension, and thus allow the cable to elongate is prevented by arranging the copper wires and bundles of fibres so that they position themselves mutually. The coherency of the bundles of fibres required for this purpose may be obtained, for example, by stranding or twisting the fibres in the bundle or impregnating the bundle with a resin, preferably colophony.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
H01B 7/0823 (2013.01 - EP US); H01B 7/1825 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0054784 A2 19820630; EP 0054784 A3 19830316; EP 0054784 B1 19850410; AT E12713 T1 19850415; CA 1177923 A 19841113; DE 3169897 D1 19850515; ES 508146 A0 19830201; ES 8303800 A1 19830201; FI 814065 L 19820620; JP S57124809 A 19820803; NO 814227 L 19820621; US 4449012 A 19840515
DOCDB simple family (application)
EP 81110134 A 19811204; AT 81110134 T 19811204; CA 392245 A 19811214; DE 3169897 T 19811204; ES 508146 A 19811218; FI 814065 A 19811217; JP 20376381 A 19811218; NO 814227 A 19811210; US 33096181 A 19811215