Ultrasonic driving device
US4945275A · kind A · utility
15Cited by
13References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 20, 1988 |
| Grant date | Jul 31, 1990 |
| Priority date | — |
| Expiry date | Jul 20, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02N2/126
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In the present invention, a stator consists of a piezoelectric vibrator having divided electrodes on at least one end, alternating current voltage is applied to each of the divided electrodes of one end and one electrode or each of the divided electrodes of the other end of the stator, and a member to be driven is placed on the end or side portion of the stator. The member is reversibly driven by a reversible circumferential progressive wave produced on the end and side portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.