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. 02, 2011
Filed:
Aug. 21, 2007
Yanchu Xu, San Jose, CA (US);
Jianfeng Xu, Dong Guan, CN;
Lingjun Kong, Dong Guan, CN;
Lei Yu, Dong Guan, CN;
Qiang Zhao, Dong Guan, CN;
YanChu Xu, San Jose, CA (US);
JianFeng Xu, Dong Guan, CN;
LingJun Kong, Dong Guan, CN;
Lei Yu, Dong Guan, CN;
Qiang Zhao, Dong Guan, CN;
SAE Magnetics (H.K.) Ltd., Hong Kong, CN;
Abstract
A voice coil motor for a disk drive includes a permanent magnet, a voice coil adapted to move in an arc proximate to the permanent magnet, a top plate positioned above the voice coil, and a bottom plate positioned below the voice coil. The permanent magnet has two halves that are magnetized in opposite direction. The two halves of the magnet are split into a right half magnet portion and a left half magnet portion. The right half magnet portion and the left half magnet portion are attached to the top plate and the bottom plate respectively at opposite sides of the voice coil motor. The invention also discloses a disk drive unit with such VCM.