Ultrasonic motor
US5105117A · kind A · utility
287Cited by
17References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 24, 1990 |
| Grant date | Apr 14, 1992 |
| Priority date | — |
| Expiry date | Oct 24, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02N2/0055
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This is an ultrasonic motor having a drive unit of low elastic modulus disposed between an ultrasonic vibrator and a mover so as to prevent noise or unnecessary vibration originating from friction on a sliding surface. Moreover, providing a drive unit of plastic and of a particular thermal conductivity enables highly efficient and stabilized motion for long hours and stable driving characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.