Rotary motor driven by a piezoelectric composite laminate
US5942838A · kind A · utility
7Cited by
4References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 19, 1997 |
| Grant date | Aug 24, 1999 |
| Priority date | — |
| Expiry date | Aug 19, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02N2/101
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
There is described a rotary motor in which a rotor disc is driven by a plate-like driving member comprising a laminate of piezoelectric material sandwiched between outer layers of anisotropic material. When a voltage is applied to the rotor disc the driving member expands into driving contact with the rotor disc and--at the same time--owing to the anisotropy of the outer layers, twists with a torsional movement and this torsional movement imparts a rotary movement to the rotor disc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.