Electromagnetic actuation device comprising a magnetic holding mechanism, particularly for the actuation of high-speed circuit breakers
US4172241A · kind A · utility
3Cited by
2References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 9, 1977 |
| Grant date | Oct 23, 1979 |
| Priority date | — |
| Expiry date | Aug 9, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F7/13
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An actuation device which includes a holding magnet, an attracting magnet and an armature therebetween, both magnets being excitable by the same electromagnetic source. The armature comprises two half portions interconnected by a non-magnetic plate and operating such that upon saturation of the holding magnet with current, the armature will be disengaged by the holding magnet and drawn towards the attracting magnet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.