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:
Jan. 05, 2010
Filed:
Sep. 28, 2006
Minggao Yao, Hong Kong, CN;
Yiru Xie, Hong Kong, CN;
Wei MA, Hong Kong, CN;
SAE Magnetics (H.K.) Ltd., Hong Kong, CN;
Abstract
A rotational micro-actuator () used in hard disk driver is disclosed. It comprises a frame () approximately in the shape of letter 'S' and PZT pieces () attached to said frame (), wherein said frame () is formed with a central coupling portion () by which the micro-actuator () is coupled to a suspension tongue (), and two pieces of said PZT () are arranged in central symmetry manner about said central coupling portion () such that said micro-actuator () can rotate about said central coupling portion () in response to the driving signals applied to said PZT pieces (), thus cause the displacement of the head element secured to the micro-actuator () so as to achieve the fine positioning of the head element. With above configuration, the micro-actuator of this invention will not cause the resonance of the suspension base plate during operation. Thereby the servo bandwidth of the hard disk driver is expanded.