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:
Aug. 09, 2022
Filed:
Apr. 10, 2019
Applicant:
Nidec-read Corporation, Kyoto, JP;
Inventor:
Masami Yamamoto, Kyoto, JP;
Assignee:
NIDEC READ CORPORATION, Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 1/067 (2006.01); G01R 3/00 (2006.01); H01B 1/02 (2006.01); H01B 13/00 (2006.01); G01R 1/04 (2006.01);
U.S. Cl.
CPC ...
G01R 1/06722 (2013.01); G01R 1/067 (2013.01); G01R 1/06733 (2013.01); G01R 1/06761 (2013.01); G01R 3/00 (2013.01); H01B 1/02 (2013.01); H01B 13/00 (2013.01); G01R 1/04 (2013.01); G01R 1/0416 (2013.01);
Abstract
A cylindrical body is formed of a conductive member provided with a spiral spring portion. Further, the cylindrical body includes a Ni metal layer and a Ni—W alloy layer containing W, and an end portion of the Ni—W alloy layer protrudes to an outer side of the Ni metal layer.