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:
Nov. 06, 1990
Filed:
Jun. 19, 1989
Hidekazu Kunieda, Shiga, JP;
Masanori Takeuchi, Shiga, JP;
Toray Industries, Inc., , JP;
Abstract
A polymer clad quartz optical fiber cord comprising a core of quartz glass, a clad of an organic polymer surrounding said core, a protective layer surrounding said clad and a covering layer surrounding said protective layer, and an organic polymeric tension fiber disposed between said protective layer and said covering layer characterized in that the cross-sectional structure of said cord satisfies the following formula: ##EQU1## where D3 represents the outer diameter (in mm) of said protective layer, D4 represents the inner diameter (in mm) of the covering layer, d represents the denier number of the tension fiber and is an integer from 1,000 to 5,000, and .rho. represents the relative density of the tension fiber.