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:
Oct. 23, 2018
Filed:
Oct. 27, 2017
Nidec Corporation, Kyoto, JP;
NIDEC CORPORATION, Kyoto, JP;
Abstract
A stationary portion includes a stator unit including coils in an annular shape with a central axis as a center; a base portion below the stator unit; and a housing defining an interior space in which a rotating portion, a bearing portion, and the stator unit are accommodated. The base portion includes a through hole extending through the base portion in an axial direction to join an outside of the housing and the interior space to each other; a sheet covering an upper opening of the through hole to close the through hole; a filler covering a lower opening of the through hole; and a vent passage defined in at least one of the base portion and the sheet to join the through hole and the interior space to each other.