Telecommunication cable resistant to water penetration

Details Telecommunication cable resistant to water penetration Telecommunication cable resistant to water penetration

1975-11-26

1976-12-21

Goldberg, E. A.

Electricity: conductors and insulators

With fluids or vacuum

With fluid stops

174 27, 174113AS, 174111, 174116, H01B 1102

Patent

active

039990036

ABSTRACT:
A cable for telephone or other communication circuits comprises a number of conductor arrays, specifically pairs or quads of helically intertwined conductors, each conductor having a metal core coated with a thermoplastic sheath in which a multiplicity of short cellulose fibers are embedded; the fibers have an average length of about 1 mm and project generally radially from the sheath over the greater part of their length. The fibers of the twisted wires interpenetrate and form a mat in the intervening spaces which swells in the event of water penetration through a defective envelope, thereby limiting the propagation of moisture along the cable.

REFERENCES:
patent: 2118907 (1938-05-01), Unterbusch
patent: 2187391 (1940-01-01), Borgeson
patent: 2348752 (1944-05-01), Quayle
patent: 2675420 (1954-04-01), Yeager

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