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, 2005
Filed:
Oct. 15, 2002
Applicants:
Akira Shibata, Murayama, JP;
Yoshihito Otomo, Tendo, JP;
Inventors:
Akira Shibata, Murayama, JP;
Yoshihito Otomo, Tendo, JP;
Assignee:
Mitsumi Electric Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K007/09 ;
U.S. Cl.
CPC ...
Abstract
In a flexible disk drive having a main frame in which a flexible disk is inserted and a direct-drive motor having a stator disposed on a main surface of the main frame and a rotor including a permanent magnet, a gap between the main surface of the main frame and the permanent magnet is set at a distance so that the rotor does not fall due to gravity by attracting the rotor to the main frame by the magnetic attractive force of the permanent magnet even if the rotor is turned upside down to the stator.