Optical fiber cable with intermingled water blocking means and m

Details Optical fiber cable with intermingled water blocking means and m Optical fiber cable with intermingled water blocking means and m

1991-10-24

1992-10-20

Healy, Brian

Optical waveguides

Optical transmission cable

Loose tube type

385109, 385111, 385113, 57 5, 57 14, G02B 644, D02G 336

Patent

active

051577526

ABSTRACT:
Optical cable with optical fibers and a water blocking element extending together along a passageway. The water blocking element swells upon contact with water so as to block the passageway against water migration. The water blocking element may be of filamentary structure, e.g. string or tape which acts as a carrier for water swellable particles, e.g. polyacrylate. The water blocking element may, however, be a filament of the swellable material which is spun with other filaments, e.g. polyester to form a string. The cable may be air pressurizable.

REFERENCES:
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patent: 4909592 (1990-03-01), Arroyo et al.
patent: 4913517 (1990-04-01), Arroyo et al.
patent: 5101467 (1992-03-01), Bernard

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