Balanced co-located gimbal-based dual stage actuation disk drive suspensions
US8896970B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 31, 2013 |
| Grant date | Nov 25, 2014 |
| Priority date | — |
| Expiry date | Dec 31, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/5552
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Various embodiments concern a suspension having a DSA structure on a gimbaled flexure comprising a loadbeam having a load point dimple and a flexure attached to the loadbeam. The flexure comprising a metal layer having a pair of spring arms, a tongue located between the spring arms, and a pair of struts. The struts connect the pair of spring arms to the tongue. One of the struts is located distal of the other strut. The pair of struts has a midline centered between the pair of struts. The suspension further comprises a motor mounted on the flexure. Electrical activation of the motor bends the pair of struts to rotate the tongue about an axis of rotation. The axis of rotation is aligned with the dimple. The midline is offset distally or proximally with respect to the axis of rotation. The offset counters a mass in imbalance of the tongue.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.