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:
Jan. 21, 2025
Filed:
Jan. 24, 2020
Applicant:
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Inventors:
Eri Matsunaga, Musashino, JP;
Tadashi Minotani, Musashino, JP;
Masahito Nakamura, Musashino, JP;
Masayuki Tsuda, Musashino, JP;
Assignee:
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01L 5/24 (2006.01); F16B 31/02 (2006.01); G01N 29/04 (2006.01); G01N 29/12 (2006.01); G01N 29/44 (2006.01); G01N 29/22 (2006.01);
U.S. Cl.
CPC ...
G01L 5/246 (2013.01); F16B 31/02 (2013.01); G01N 29/045 (2013.01); G01N 29/12 (2013.01); G01N 29/4427 (2013.01); F16B 2031/022 (2013.01); G01N 29/223 (2013.01);
Abstract
A looseness detection sensor for detecting looseness of a bolt for fixing a component, including: a resonance unit arranged adjacent to a head portion of the bolt and made of an insulating material confining a high-frequency signal input externally; and a conductive member in conduction with the component across the resonance unit, wherein the conductive member is a cap put on the head portion of the bolt and includes a protrusion contacting a surface of the component.