Electromagnetically operated device and switching device including the same
US9030280B2 · kind B2 · utility
1Cited by
20References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2012 |
| Grant date | May 12, 2015 |
| Priority date | — |
| Expiry date | Sep 10, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H71/32
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electromagnetically operated device includes: a moving member of the electromagnetically operated device; a drive coil that is energized to generate magnetic flux for driving the moving member; a permanent magnet provided between a stationary member and the moving member for holding the moving member; and a holding force adjusting member for adjusting the holding force applied to the moving member by the permanent magnet, wherein the holding force adjusting member is placed at a position that will not be included in the main magnetic path of the magnetic flux caused by the drive coil so as to be removable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.