1988-05-17
1989-10-17
Sikes, William L.
G02B 644
Patent
active
048742198
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 having an arcuately shaped cross section transverse to a longitudinal axis of the cable and each comprising glass fibers embedded in a matrix material. 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 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. Further, because the cable has an all-dielectric sheath system, it is inherently lightning, corrosion and EMP resistant.
REFERENCES:
patent: 3878444 (1975-04-01), Miller
patent: 3973385 (1976-08-01), Roe
patent: 4022010 (1977-05-01), Gladenbeck et al.
patent: 4146302 (1979-03-01), Jachimowicz
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"The Gopher and Buried Cable" by R. A. Connolly and N. J. Cogolia, appeared in Apr., 1970 issue of Bell Laboratories Record.
"Fiber Cable Wears an Extruded Jacket" by G. J. Beveridge et al. appeared in Apr. 15, 1985 issue of Telephone Engineer & Management.
Two brochures of Stratoglas, a division of Air Logistics Corp. (1) "Stratoglas Dielectric Rodent-Resistant Armored Cable" in Technical Bulletin No. 58, (2) Stratoglas Ruggedized Optical Fiber Cable in Technical Bulletin No. 56, dated Jun. 1982.
Arroyo Candido J.
Patel Parbhubhai D.
American Telephone and Telegraph Company AT&T Bell Laboratories
Sikes William L.
Somers Edward W.
Wise Robert E.
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