Switching apparatus
US6611413B2 · kind B2 · utility
5Cited by
7References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 23, 2001 |
| Grant date | Aug 26, 2003 |
| Priority date | — |
| Expiry date | Sep 21, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H33/285
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A switching device includes a pair of fixed coils and a pair of movable coils, with one pair being disposed between the other pair. Two of the coils may be connected back to back on opposite sides of a support plate to increase the stiffness of the coils and reduce damage due to impact between the fixed and movable coils. The coils include two sets of coils, each set including one of the fixed coils and one of the movable coils. The coil sets can be driven simultaneously or at different times to effect contact opening and closing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.