High force rotary actuator
US8810084B2 · kind B2 · utility
5Cited by
10References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 14, 2011 |
| Grant date | Aug 19, 2014 |
| Priority date | — |
| Expiry date | Jul 31, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K41/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An actuator includes an upper stator with four upper poles and a lower stator with four lower poles aligned with the four upper poles. A permanent magnet is attached to the upper stator and the lower stator. Four moving armatures are positioned at terminal ends of the four upper poles and the four lower poles. Coils are wrapped around the upper stator and the lower stator. A controller selectively applies current to the coils to migrate flux created by the permanent magnet through selective poles of the upper stator and the lower stator and thereby alter the size of air gaps associated with the four moving armatures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.