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:
Jun. 21, 1988
Filed:
Apr. 09, 1987
Applicant:
Inventors:
Assignee:
Sumitomo Electric Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350 9623 ;
Abstract
In a waterproof optical fiber cable for use in a communication system, one or more optical fibers are loosely put in grooves formed along a spacer and a plurality of filled portions are formed in each of said grooves by being filled with dampproof material with a predetermined interval so as to provide a plurality of filled portions and unfilled portions alternately, whereby undesired local bending of the optical fibers can be prevented. Also a method of making the waterproof optical fiber cable having such filled portions and unfilled portions is disclosed.