Cable having non-metallic armoring layer

Details Cable having non-metallic armoring layer Cable having non-metallic armoring layer

1989-06-30

1990-08-07

Gonzalez, Frank

G02B 644

Patent

active

049462377

ABSTRACT:
An animal-resistant optical fiber cable (20) includes a core (22) which comprises a transmission medium and a sheath system. The sheath system includes an outer jacket (65) and a dielectric armor (40) in the form of a shell. The shell comprises a plurality of longitudinally extending preformed segments (42--42) each being a composite comprising a substrate portion (50) and a layer (52) of a coating material which has a relatively high hardness disposed on an outer surface of the substrate portion. Each of the segments covers less than half of the periphery of the core and, in a preferred embodiment, eight segments are used. Further, the shell segments are stranded helically about the core with at least portions of longitudinal edge surfaces of adjacent segments being in engagement with each other. The shell segments not only provide rodent protection for the cable, but also they provide suitable tensile and compressive strength as well as suitable flexibility and cable bending performance. Further, because the cable in a preferred embodiment has an all-dielectric sheath system, it is inherently lighting, corrosion and EMP resistant.

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Article entitled "The Gopher and Buried Cable" authored by R. A. Connolly and N. J. Cogelia appearing in the Apr. 1970 Bell Labs Record.
Article by G. J. Beveridge et al., entitled "Fiber Cable Wears an Extruded Jacket" in Apr. 15, 1985 issue of Telephone Engineer and Management.
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C. J. Arroyo et al., 15-10 Application Ser. No. 07/194,760 filed 5/17/88 Two brochures of Stratoglas, a division of Air Logistics Corp.

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