Optical fiber cable

Optical waveguides – Optical transmission cable – Loose tube type

Patent

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Details

385104, 385105, 385110, 385114, G02B 644

Patent

active

056300026

ABSTRACT:
One or a plurality of reverse-lay grooves the direction of which is inverted periodically are cut in the outer circumference of a spacer, and an optical fiber tape unit or a stack of optical fiber tape units is accommodated in this groove. The length of the diagonal lines of the optical fiber tape unit or a stack of optical fiber tape units is larger than the width and depth of a bottom portion of the groove. In the inverted portion of the groove, the normal vector of the optical fiber tape unit or the stack of optical fiber tape units points to a direction perpendicular to an opening direction of the groove in the inverted portions of the groove.

REFERENCES:
patent: 4474426 (1984-10-01), Yataki
patent: 4781434 (1988-11-01), Kitagawa et al.
patent: 4807962 (1989-02-01), Arroyo et al.
patent: 4820014 (1989-04-01), Nishimura et al.
patent: 4997257 (1991-03-01), Spedding
patent: 5117809 (1992-06-01), Zeidler
patent: 5517591 (1996-05-01), Wagman et al.

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