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:
Oct. 17, 2006
Filed:
Oct. 16, 2003
MO Xu, Singapore, SG;
Victor C. Choo, Singapore, SG;
Yiren Hong, Singapore, SG;
Pohlye Lim, Singapore, SG;
Siewming NG, Singapore, SG;
Mo Xu, Singapore, SG;
Victor C. Choo, Singapore, SG;
YiRen Hong, Singapore, SG;
PohLye Lim, Singapore, SG;
SiewMing Ng, Singapore, SG;
Seagate Technology LLC, Scotts Valley, CA (US);
Abstract
A base plate for a spindle motor is provided defining a minimal axial gap with a relatively rotatable magnet. In an example, a surface of the base plate is positioned at 0.1 mm from an adjacent surface of a relatively rotatable magnet. The base plate is comprised of a composite material such that stiffness is improved and acoustic vibration is reduced, while maintaining low power consumption and a fast start-up time. A first material, being a nonmagnetic material is employed adjacent to a motor magnet, and a second material having a preferred stiffness is employed at a greater radial distance from the magnet than the radial distance between a stator and the magnet.