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. 31, 2024
Filed:
Jun. 29, 2022
Applicant:
Nidec Corporation, Kyoto, JP;
Inventors:
Keigo Nakamura, Kyoto, JP;
LiPeng Li, Kyoto, JP;
Takashi Shiraishi, Kyoto, JP;
Yoshiyuki Aono, Kyoto, JP;
Assignee:
NIDEC CORPORATION, Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 7/08 (2006.01); H02K 5/16 (2006.01); H02K 7/00 (2006.01);
U.S. Cl.
CPC ...
H02K 7/08 (2013.01); H02K 5/16 (2013.01); H02K 7/003 (2013.01);
Abstract
A drive device includes a first bearing lubricated by a fluid and a second bearing lubricated by a lubricant having a higher electrical conductivity than the fluid. The first bearing rotatably supports a shaft extending in the axial direction along the rotation axis. A housing of the drive device has a first bearing holder that holds the first bearing. The second bearing is arranged between the shaft and the housing and rotatably supports the shaft. The second bearing is arranged in a space isolated from the first bearing holder.