Vibration actuator
US5892316A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 10, 1997 |
| Grant date | Apr 6, 1999 |
| Priority date | — |
| Expiry date | Sep 10, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02N2/106
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A vibration actuator comprising a vibration element including an elastic member and an electromechanical converting element and a relative movement member maintained in pressure contact with a driving face of the vibration element, wherein the electromechanical converting element includes a longitudinal vibration generating electromechanical converting element for generating a longitudinal vibration for generating a displacement along the axial direction of the vibration element, and a torsional vibration generating electromechanical converting element for generating a torsional vibration for generating a torsional displacement around the axis of the vibration element, and the longitudinal vibration generating electromechanical converting element and the torsional vibration generating electromechanical converting element are provided on a substantially same plane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.