Electromagnetically released coupling
US4496922A · kind A · utility
13Cited by
12References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 5, 1983 |
| Grant date | Jan 29, 1985 |
| Priority date | — |
| Expiry date | Dec 5, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F7/08
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A magnet assembly is made up by a plurality of magnet modules each having a permanent magnet adapted to attract a rotatable armature into engagement with the pole pieces of the module. Each module also includes an electromagnetic coil having an axis disposed perpendicular to the pole pieces. When energized, the coil produces flux which causes the permanent magnet flux to bypass the armature and enable release of the armature from the pole pieces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.