Piezoactuator and a method for producing a piezoactuator
US6998762B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 6, 2001 |
| Grant date | Feb 14, 2006 |
| Priority date | — |
| Expiry date | Jul 9, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/886
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a piezoactuator (1) comprising a piezoelectric body (4) and elements for pre-tensioning the piezoelectric body, consisting of a first (2) and a second (3) connecting element for transferring forces to the piezoelectric body (4). The actuator is provided with an element (6) for transferring tensile/pressure forces between the connecting elements (2, 3), said element being at least partially located in a gap (5) in the form of a bore in the piezoelectric body (4). According to the invention, the piezoactuator (1) is set to a defined working curve using the pre-tensioning elements (2, 3, 6). The piezoelectric body (4) is preferably produced by the lamination of piezoelectric layers, into which a gap is drilled after lamination and the component is subsequently sintered.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.