PZT limiter for a micro dual stage actuated suspension
US9214176B1 · kind B1 · utility
5Cited by
2References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2015 |
| Grant date | Dec 15, 2015 |
| Priority date | — |
| Expiry date | Jul 23, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B19/042
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A PZT limiter in a microactuator type dual stage actuated (DSA) suspension limits travel of the PZT, particularly of the cantilevered end of the PZT and particularly during non-operational shock. The PZT limiter thus limits the stresses including bending placed on the PZT during the shock event and thus helps to prevent cracking of the PZT. Additionally, by limiting displacement of the PZT, the limiter improves the mechanic and electrical performance of the suspension during operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.