Oscillatory drive unit
US11456682B2 · kind B2 · utility
0Cited by
3References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 2, 2018 |
| Grant date | Sep 27, 2022 |
| Priority date | — |
| Expiry date | Jul 17, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02N2/103
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A piezoelectric drive unit is configured for driving a passive element relative to an active element, wherein the active element includes a resonator with two arms, each extending in parallel to a reference plane and ending in a contact element, which is movable by oscillating movements of the arms and thereby drives the passive element. A pre-stress element is arranged to exert a relative force between the active element and passive element, pressing them against one another with pre-stress forces that are normal to the reference plane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.