Flux bypass for solenoid actuator
US9347579B2 · kind B2 · utility
1Cited by
5References
14Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 31, 2014 |
| Grant date | May 24, 2016 |
| Priority date | — |
| Expiry date | May 8, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F2007/086
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electromagnetic solenoid actuator comprises a ferromagnetic core and a ferromagnetic plunger. The ferromagnetic core supports a plurality of windings, and is oriented along an axis. The ferromagnetic plunger is aligned axially with the ferromagnetic core, and is translatable along the axis to vary a width of an air gap separating the ferromagnetic plunger from the ferromagnetic core. The ferromagnetic plunger and the ferromagnetic core overlap axially at a flux bypass that provides an alternative flux path that diverts increasing flux away from the air gap as the width of air gap decreases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.