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:
May. 03, 2016
Filed:
Sep. 08, 2015
Nidec Corporation, Kyoto, JP;
Akiyoshi Nakamura, Kyoto, JP;
Toshihiro Hirasawa, Kyoto, JP;
Nidec Corporation, Kyoto, JP;
Abstract
A spindle motor includes a base portion molded by casting. The base portion includes a plate portion extends radially with respect to a central axis, and a wall portion arranged to extend in an axial direction from a radially outer edge of the plate portion. The wall portion includes a hole portion in which an attaching member to attach a cover member to the spindle motor is arranged, and is arranged to support at least a portion of the cover member. An inside surface of the base portion includes a metal surface subjected to a cutting process. The base portion includes a recessed portion arranged between the metal surface and the hole portion. The recessed portion is recessed either upward or downward in the axial direction, overlaps with at least one of the metal surface and the hole portion when viewed in a horizontal direction perpendicular to the central axis.