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:
Mar. 31, 2026
Filed:
May. 31, 2021
Ntt, Inc., Tokyo, JP;
Yusuke Yamada, Musashino, JP;
Masashi Kikuchi, Musashino, JP;
Akira Sakurai, Musashino, JP;
Shigekatsu Tetsutani, Musashino, JP;
Hiroaki Tanioka, Musashino, JP;
NTT, Inc., Tokyo, JP;
Abstract
An object of the present invention is to provide an optical fiber testing method and an optical fiber winding device capable of appropriately reproducing the same lateral pressure and minute bending state in a test of an optical fiber as those in an optical cable. In the optical fiber testing method according to the present invention, an optical fiber-of the second layer wound around a bobbinis used as an object to be tested. Lateral pressure to the optical fiber-of the second layer is applied by an optical fiber-of the third layer. The lateral pressure is adjusted by a tension when the optical fiber-of the third layer is wound around the bobbin. In other words, since the lateral pressure is applied to the optical fiber to be tested from another optical fiber, the same lateral pressure and minute bending state as those in the optical cable can be reproduced.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile