Tensile member for communication cables

Details Tensile member for communication cables Tensile member for communication cables

1994-01-27

1995-04-18

Nimmo, Morris H.

Optical waveguides

Optical transmission cable

With electrical conductor in the same cable

174 681, 174113R, 174115, 174131R, 174131A, G02B 644, H01B 728, H01B 1300

Patent

active

054085608

ABSTRACT:
A communication cable (10) comprises optical fibres (24) and/or metal conductors (20) for the transmission of information, and a tensile member, the tensile member comprising a steel strand and synthetic material. The steel strand has a modulus of elasticity of at least 140 000 N/mm.sup.2. The steel strand comprises a core wire (12) and one layer of layer wires (14) surrounding the core wire. A contact is provided between the layer wires and the core wire. The interstices between the layer wires and the core wire are filled with a first synthetic material (13) having a melting-point above 150.degree. C. The steel strand is covered by a layer of a second synthetic material (16). The filling with the first synthetic material and the covering by a layer of a second synthetic material is such that watertightness is obtained in the longitudinal direction of the tensile member.

REFERENCES:
patent: 2589507 (1952-03-01), Noyes
patent: 3549788 (1970-12-01), Apen et al.
patent: 3699237 (1972-10-01), Melia
patent: 4196307 (1980-04-01), Moore et al.
patent: 4371234 (1983-02-01), Parfree et al.
patent: 4657342 (1987-04-01), Bauer
patent: 4976509 (1990-12-01), Bachmann et al.
patent: 5122622 (1992-06-01), Reuss et al.
patent: 5202944 (1993-04-01), Riorden

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