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:
Jan. 22, 2013
Filed:
Sep. 01, 2010
Yoichi Sekii, Kyoto, JP;
Hirokazu Shirai, Kyoto, JP;
Junya Mizukami, Kyoto, JP;
Kazuyoshi Saito, Kyoto, JP;
Hideki Nishimura, Kyoto, JP;
Atsushi Yawata, Kyoto, JP;
Yoichi Sekii, Kyoto, JP;
Hirokazu Shirai, Kyoto, JP;
Junya Mizukami, Kyoto, JP;
Kazuyoshi Saito, Kyoto, JP;
Hideki Nishimura, Kyoto, JP;
Atsushi Yawata, Kyoto, JP;
Nidec Corporation, Kyoto, JP;
Abstract
A stationary portion of a spindle motor includes a base member and a magnetic member. The magnetic member is arranged below a magnet and fixed to the base member. The magnetic member includes an annular plate portion arranged on an upper surface of the base member, and a projecting portion arranged to extend from the plate portion in an axial direction. At least a portion of the projecting portion is press fitted to a wall surface of the base member.