Miro-actuator, head gimbal assembly, and disk drive unit with the same
US7474512B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2005 |
| Grant date | Jan 6, 2009 |
| Priority date | — |
| Expiry date | Feb 2, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/596
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A micro-actuator for a head gimbal assembly includes a support frame including a bottom support adapted to be connected to a suspension of the head gimbal assembly, a top support adapted to support a slider of the head gimbal assembly, and a leading beam that couples the bottom support and the top support. The leading beam includes weak points or notches that allow the top support to rotate about a rotational axis in use. A first PZT element is mounted between first sides of the top and bottom supports, and a second PZT element is mounted between second sides of the top and bottom supports. The first and second PZT elements are excitable to cause selective rotational movement of the top support about the rotational axis in use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.