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. 10, 2016
Filed:
Aug. 26, 2015
Nidec Corporation, Kyoto, JP;
Toshihiro Hirasawa, Kyoto, JP;
Nidec Corporation, Kyoto, JP;
Abstract
A spindle motor is used in a disk drive apparatus including a cover member to be attached to the spindle motor. The spindle motor includes a rotor portion; a bearing portion; a stator portion; a base portion molded by casting, and arranged to contain the rotor portion, the bearing portion, and the stator portion; and a screw attachment member fixed to the base portion, and including a screw hole. The base portion includes a plate portion arranged to extend 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 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 screw attachment member is arranged on the wall portion.