The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 02, 2013
Filed:
Aug. 06, 2010
Tetsuya Yasutomi, Tokyo, JP;
Masayoshi Tsukamoto, Tokyo, JP;
Mitsuru Iwano, Tokyo, JP;
Yoshihisa Rintsu, Tokyo, JP;
Masanobu Aragaki, Tokyo, JP;
Masaki Nishiguchi, Tokyo, JP;
Tetsuya Yasutomi, Tokyo, JP;
Masayoshi Tsukamoto, Tokyo, JP;
Mitsuru Iwano, Tokyo, JP;
Yoshihisa Rintsu, Tokyo, JP;
Masanobu Aragaki, Tokyo, JP;
Masaki Nishiguchi, Tokyo, JP;
The Furukawa Electric Co., Ltd., Tokyo, JP;
Abstract
It is an object of the present invention to provide an optical fiber cable which can reliably prevent increased transmission loss due to damage of the optical fiber as a result of the egg-laying behavior of cicadas. The cable includes at least an optical fiber, tension membersand a sheath. The sheathhas a shore D hardness of 55 or more and a minimum distance L from a surface of the optical fiberto an outer surface of the sheathof greater than 0.3 mm. Further, in the cable, the surface of sheathhas a coefficient of friction of 0.45 or less and the sheathhas a shore D hardness of 57 or more. In addition, the cable is made by using a specific flame retardant composition (P) as the sheath material.