Communication cable having water-blocking capabilities

Details Communication cable having water-blocking capabilities Communication cable having water-blocking capabilities

1993-11-03

1994-12-13

Nimmo, Morris H.

Electricity: conductors and insulators

With fluids or vacuum

With fluid stops

174236, 174106R, 174107, 174112, 385102, 385107, H01B 728

Patent

active

053731000

ABSTRACT:
A communication cable includes a core comprising at least one transmission medium and a sheath system which is disposed about the core. Means are disposed within the cable for preventing the longitudinal migration of water through the cable core, said means including both a hydrophilic material and a hydrophobic material in cooperative communication with each other. Specifically, a hydrophilic, water-absorptive material is supported by a yarn which is helically wrapped about various sections of the communication core. In a copper cable, the water-absorptive yarn may be wrapped about individual twisted pair conductors or a unit consisting of a plurality of twisted pair conductors or the cable core itself. In addition to the helically-wrapped, water-absorptive yarn, the cable of the present invention includes a hydrophobic, water-blocking material interdisposed to fill all voids and interstices within the communication core.

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patent: 4701016 (1987-10-01), Gartside, III et al.
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patent: 5082719 (1992-01-01), Arroyo
patent: 5109457 (1992-04-01), Panuska et al.
patent: 5146046 (1992-09-01), Arroyo et al.

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