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:
Apr. 28, 2009
Filed:
May. 24, 2006
Applicants:
Masahisa Tsuchiya, Isesaki, JP;
Masahiro Nishidate, Isesaki, JP;
Inventors:
Masahisa Tsuchiya, Isesaki, JP;
Masahiro Nishidate, Isesaki, JP;
Assignee:
Tokyo Parts Industrial Co., Ltd., Gunma-Ken, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 5/167 (2006.01); H02K 7/09 (2006.01); H02K 5/24 (2006.01); G11B 19/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
A simple configuration allows a rotor of a spindle motor to be eccentric in the pickup moving direction, and improves axial run-out caused by clearance between a rotating shaft and bearing. An arc shaped magnetic body is disposed on a base of a spindle motor opposite a drive magnet and in the same direction as the opposing face, thereby generating an attractive force on the outer periphery side of the rotor.