Vibration wave driven motor
US5099167A · kind A · utility
13Cited by
3References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 6, 1990 |
| Grant date | Mar 24, 1992 |
| Priority date | — |
| Expiry date | Mar 6, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02N2/08
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a vibration wave driven motor disclosed herein, the arcuate portions of the vibration member thereof are formed into a shape in which flexural rigidity differs between the inner side and the outer side thereof, or a shape in which the torsional rigidity of the straight portions of the vibration member is made higher than the torsional rigidity of the arcuate portions, whereby a torsion component produced in the straight portions is made small by the straight portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.