Electromagnetic actuating device, in particular for a valve
US5627504A · kind A · utility
14Cited by
5References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 7, 1995 |
| Grant date | May 6, 1997 |
| Priority date | — |
| Expiry date | Mar 7, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F7/1615
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Electromagnetic actuating device, in particular for a valve, includes a plunger which is axially movable between two extreme positions, an electromagnetic coil surrounding the plunger actuating it, and a permanent magnet holding the plunger in one of its extreme positions, and at least one pole plate located between plunger and permanent magnet. The holding force of the permanent magnet is considerably increased by providing that the permanent magnet, which is configured as a flat disk, be completely covered by the pole plate on the side facing the plunger.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.