Vibration driven motor apparatus
US5180941A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 1990 |
| Grant date | Jan 19, 1993 |
| Priority date | — |
| Expiry date | Nov 8, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02N2/08
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A vibration wave driven apparatus disclosed in this specification frictionally drives a first member having mounted thereon an elastic member in which a travelling vibration wave is formed and a second member provided with a rail-like stator which is in pressure contact with the elastic member, along the lengthwise direction of the rail-like stator, by the travelling vibration wave formed in the elastic member. Further, the apparatus has a guide member for restraining the degree of freedom in a direction orthogonal to the lengthwise direction, the guide member being comprised of a roller and a guide portion against which the roller bears and which extends along the direction of relative movement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.