Rotational PZT micro-actuator, head gimbal assembly, and disk drive unit with the same
US7379274B2 · kind B2 · utility
45Cited by
15References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2005 |
| Grant date | May 27, 2008 |
| Priority date | — |
| Expiry date | Jun 22, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/5552
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A head gimbal assembly (HGA) for a disk drive unit that includes a micro-actuator, a slider and a suspension to load the slider and the micro-actuator. The micro-actuator includes a pair of actuator side arms, a PZT element extending between and connecting the actuator side arms; a rotatable plate positioned between the actuator side arms, wherein the slider is mounted on the rotatable plate; and a pair of connection elements that connect the rotatable plate to the actuator side arms, respectively. The rotatable plate rotates in a first direction when the PZT element contracts and a second direction when the PZT element expands.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.