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:
Dec. 10, 1996
Filed:
Jun. 05, 1995
Applicant:
Inventors:
Yasunori Yoshie, Tokyo, JP;
Takashi Kanazawa, Tokyo, JP;
Assignee:
NKK Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K / ; B21D / ;
U.S. Cl.
CPC ...
21912164 ; 21912163 ; 21912182 ; 228148 ;
Abstract
A method and apparatus for manufacturing a metal pipe-covered optical fiber cable perform extra length control of the metal pipe with respect to the optical fiber in accordance with length adjustment by reducing the diameter of the metal pipe while applying minimum tension or without applying any tension for extra length control to the optical fiber by means of a pair of rollers, so that a crack in the optical fiber is avoided and the service life of the optical fiber is prolonged.