Dual stage actuator suspension having a single microactuator and employing pseudo symmetry to achieve suspension balance
US8228642B1 · kind B1 · utility
50Cited by
16References
14Claims
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Key dates
| Filing date | Feb 16, 2010 |
| Grant date | Jul 24, 2012 |
| Priority date | — |
| Expiry date | Aug 20, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49025
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A dual stage actuator (DSA) suspension has a single microactuator such as a PZT element on one side of central longitudinal axis of the suspension, and a pseudo symmetry structure formed or affixed on the other side of the central longitudinal axis opposite the PZT. The pseudo symmetry structure has mass and stiffness that mirrors the PZT, thus keeping the suspension mechanically balanced and symmetric about the longitudinal axis for improved suspension performance especially in a shock environment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.