Ultrasonic motor
US5416375A · kind A · utility
58Cited by
11References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 9, 1994 |
| Grant date | May 16, 1995 |
| Priority date | — |
| Expiry date | Sep 9, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02N2/026
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An ultrasonic motor comprising an elastic body, at least two laminated piezoelectric bodies clamped by a portion of the elastic body, an ultrasonic oscillator for exciting simultaneously a plurality of shrunk and retreated oscillation modes on the elastic body, to generate ultrasonic elliptic oscillation, and an element to be driven urged against a portion of the ultrasonic oscillator and movable with respect to the ultrasonic oscillator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.