Ultrasonic vibrator and ultrasonic motor using the ultrasonic vibrator
US7205703B2 · kind B2 · utility
6Cited by
3References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 15, 2004 |
| Grant date | Apr 17, 2007 |
| Priority date | — |
| Expiry date | Jan 23, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In an ultrasonic vibrator in which ultrasonic elliptical vibration is caused at a friction-projection by the simultaneous generation of a first vibration mode and a second vibration mode in a piezoelectric element, the friction-projection is formed by burning so as to be integrated with the piezoelectric element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.