Vibration wave motor
US5300850A · kind A · utility
29Cited by
9References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 30, 1992 |
| Grant date | Apr 5, 1994 |
| Priority date | — |
| Expiry date | Jan 30, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02N2/163
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A vibration wave device having a resilient member, and electro-mechanical energy conversion means for inducing a travelling vibration wave in the resilient member, the travelling vibration wave being used as a drive source, includes means provided on at least one member of the vibration wave device at a location integer times or approximately integer times 1/2 of the wavelength of a vibration wave which may produce noise and making the dynamic rigidity of the member non-uniform.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.