High-efficiency radial piezoelectric motor
US7196453B2 · kind B2 · utility
6Cited by
12References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 23, 2005 |
| Grant date | Mar 27, 2007 |
| Priority date | — |
| Expiry date | Sep 30, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02N2/065
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A radial piezoelectric motor comprises a housing, a motor shaft rotatably mounted in the housing and a plurality of piezoelectric actuators inside the housing radially disposed about the axis of the motor shaft. The motor also includes circuitry for applying a voltage to the piezoelectric actuators to expand the actuators repeatedly and in succession and apparatus responsive to the repeated and successive expanding of the actuators for rotating the motor shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.