Optical waveguides – Optical transmission cable – Loose tube type
Patent
1996-02-26
1997-05-13
Bovernick, Rodney B.
Optical waveguides
Optical transmission cable
Loose tube type
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.
Hamada Kazuhiro
Ishikawa Hiroki
Ota Junichi
Sano Hiroaki
Suetugu Yoshiyuki
Bovernick Rodney B.
Sanghavi Hemang
Sumitomo Electric Industries Ltd.
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