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:
Sep. 21, 1993
Filed:
Jun. 05, 1992
Applicant:
Inventors:
Mahesh K Vyas, Cary, NC (US);
Paul E Neveux, Jr, Bahama, NC (US);
Eric L Buckland, Raleigh, NC (US);
Randy G Schneider, Raleigh, NC (US);
Assignee:
Sumitomo Electric Fiber Optics Corp., Research Triangle Park, NC (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
385113 ; 385109 ;
Abstract
A steam resistant optical fiber cable for use adjacent underground steam ducts in metropolitan locations. The optical fiber cable comprises polyethersulfone loose tubes for enhanced hydrolytic stability and a welded aluminum tube swaged over the fiber core to provide moisture imperviousness. The welded aluminum tube is bonded to the fiber core with an intermediate resin barrier layer to provide resistance to repeated cyclic flexing of the cable.