Ultrasonic motor
US5357164A · kind A · utility
305Cited by
8References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 20, 1993 |
| Grant date | Oct 18, 1994 |
| Priority date | — |
| Expiry date | May 20, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02N2/163
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An ultrasonic motor characterized by comprising: an ultrasonic oscillator for generating ultrasonic oscillation on a specific surface; a movable body pressure-bonded to a specific surface of the ultrasonic oscillator for moving the movable body by the ultrasonic oscillator in a given direction by ultrasonic oscillation; and a sliding element provided on one of a contact surface of the ultrasonic oscillator and a contact surface of the movable body and having a porous oxide coating in which hydrators are formed to substantially fill small holes in the oxide coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.