Electromagnetic actuator having two opposite phase movable parts
US5444313A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 8, 1994 |
| Grant date | Aug 22, 1995 |
| Priority date | — |
| Expiry date | Jul 8, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K33/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Electromagnetic actuator comprising a stationary stator (I) with a central pole (3) of length X.sub.c and two lateral poles (4,5) of length X.sub.L, said stator including an exciting coil (6). The actuator further comprises a moving part (2) with thin permanent magnets (12,13,22,23) magnetized in the direction of the air gap. It is characterized in that the moving member (2) consists of at least two independent elements (10,20) each movable in the parallel directions to the intersection of the air gap plane and the stationary stator median plane (1), in opposite directions. Each of the moving parts (10,29) has a pair of thin magnets (12,13,22,23) magnetized in alternate directions, integral with a yoke (11,21) of soft material. The thin magnets (22,23) of one of the moving elements (20) are magnetized in the opposite direction to the corresponding thin magnets (12,13) of the adjacent moving element (10), the yokes (11,21) defining with the stationary stator part the air gap (E).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.