Screw thread driving polyhedral ultrasonic motor
US7902723B2 · kind B2 · utility
1Cited by
6References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 16, 2006 |
| Grant date | Mar 8, 2011 |
| Priority date | — |
| Expiry date | Nov 14, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02N2/163
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A screw thread driving polyhedral ultrasonic motor includes a stator, a rotor and multiple piezoelectric plates being bonded to the stator or the rotor. The stator and the rotor have screw threads matched with each other. The stator and the rotor are connected via the screw threads.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.