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:
Nov. 26, 2002
Filed:
Dec. 05, 2000
Hiroki Kitahori, Fujisawa, JP;
David W. Albrecht, San Jose, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A spindle motor employed for a hard disk unit, including a hub having an outer peripheral wall portion provided with a rotor magnet on its outer peripheral surface and formed so as to be able to support the inner peripheral portion of a hard disk and a stator coil fixed so as to be positioned outwards in the radial direction of the disk and face the rotor magnet. This spindle motor is assembled in the disk unit, in which each stator coil is disposed so that the tracing of the magnetic head in movement is positioned between adjacent cores, thereby the magnetic head is affected less by the leak magnetic flux from the stator coil. In addition, the scanning head is moved to its unloading position with use of an energy accumulated in the capacitor when the power of the disk unit is turned off.