Precise positioning actuator actuator for precisely positioning thin-film magnetic head element and head gimbal assembly with the actuator
US6515835B2 · kind B2 · utility
4Cited by
4References
24Claims
0Family size
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Key dates
| Filing date | Jan 19, 2001 |
| Grant date | Feb 4, 2003 |
| Priority date | — |
| Expiry date | Jul 14, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/204
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An actuator for precisely positioning an object to be positioned is fixed between the object and a support member. The actuator has a displacement generation part which includes a solid piezoelectric material member, a common electrode formed on one surface of the piezoelectric material member to cover substantially whole of the one surface, and first and second electrodes formed on the other surface opposite to the one surface, of the piezoelectric material member to superimpose to the common electrode. The first and second electrodes have side edges facing with each other via a uniform width space, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.