Differentially wound electromagnetic actuator
US4831291A · kind A · utility
9Cited by
8References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 28, 1987 |
| Grant date | May 16, 1989 |
| Priority date | — |
| Expiry date | Oct 28, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K41/031
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electromagnetic actuator used with a segmented optical element includes a central pole piece that is affixed at one end to the segment, and is movable along a displacement axis. Oppositely wound, longitudinally displaced electical coils on the pole piece are encompassed by an outer magnet. Pole piece displacement is the result of the net axial force generated from the current flowing through the coils.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.