Low profile load beam with etched cavity for PZT microactuator
US8149545B1 · kind B1 · utility
47Cited by
40References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 20, 2009 |
| Grant date | Apr 3, 2012 |
| Priority date | — |
| Expiry date | Nov 25, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/4873
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A dual-stage actuator disk drive suspension load beam has a recessed cavity formed in it into which the microactuator motor is partially or completely placed. The cavity may be formed by partially etching the load beam during the same etching process that creates the load beam from a sheet of stainless steel material. The partially etched load beam having a cavity for the microactuator motor has the advantages of a lower profile, improved inertial balancing of the suspension, and increased sway resonant frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.