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. 23, 2012
Filed:
Jun. 14, 2011
Jifang Tian, Fremont, CA (US);
Qiang Yang, Fremont, CA (US);
Jian Yang, Fremont, CA (US);
Western Digital Technologies, Inc., Irvine, CA (US);
Abstract
A head gimbal assembly includes a rotary fine actuator attached to the head mounting tongue. The rotary fine actuator includes a fixed portion, a head mounting platform, first and second piezoelectric elements, and first and second curved compliant members. The first piezoelectric element is bonded to the fixed portion at a first bonding surface, and to the head mounting platform at a second bonding surface. The second piezoelectric element extends between the fixed portion and the head mounting platform. The first and second curved compliant members extend between the fixed portion and the head mounting platform. A read head is bonded to a mounting surface of the head mounting platform. The first and second bonding surfaces are parallel to the mounting surface. The read head is disposed between the first and second piezoelectric elements.