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:
Aug. 18, 2009
Filed:
Feb. 16, 2006
Liding Wei, DongGuan, CN;
Yihua Pei, DongGuan, CN;
Liding Wei, DongGuan, CN;
Yihua Pei, DongGuan, CN;
SAE Magnetics H.K. Ltd., Hong Kong, CN;
Abstract
A symmetric voice coil motor assembly having a central axis and including: a bearing assembly for rotation about the central axis; a coil assembly that is positioned radially outwardly from the bearing assembly and that has at least two pairs of coils and an inner yoke; a permanent magnet set that is positioned radially outwardly from the coil assembly and that includes at least two pairs of ring magnets and an outer yoke; and a head suspension assembly that is connected to the coil assembly and that includes a head gimbal assembly and an arm connected to the head gimbal assembly. The voice coil motor assembly may be a component in a hard disk drive, such as a micro drive.