Magnetic actuator
US7102475B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 18, 2003 |
| Grant date | Sep 5, 2006 |
| Priority date | — |
| Expiry date | Aug 18, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H33/6662
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A magnetic actuator includes a first yoke, an armature which is provided inside the first yoke and made movable in reciprocating motion along a first direction inside the first yoke, first and second coils fitted inside the first yoke, a pair of second yokes affixed to the first yoke along a second direction, and permanent magnets affixed to the second yokes in a manner that the permanent magnets are positioned face to face with the armature. In the magnetic actuator thus constructed, fluxes generated by the first and second coils pass through first magnetic circuits whereas fluxes generated by the permanent magnets pass through second magnetic circuits differing from the first magnetic circuits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.