Switching device
US7750771B2 · kind B2 · utility
3Cited by
13References
6Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Apr 22, 2008 |
| Grant date | Jul 6, 2010 |
| Priority date | — |
| Expiry date | Jun 21, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H13/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Magnetic attractive force of a magnet exerted on a movable contact in a sealing case through yokes changes as a result of movement of a magnetic shunt element induced by movement of a movable element located outside the sealing case. As a result, the movable contact can be brought into or out of contact with a stationary contact without involvement of entry of the movable element into the sealing case.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.