Electrical switching device having a contact piece which can move along a movement axis
US8119946B2 · kind B2 · utility
1Cited by
7References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 11, 2007 |
| Grant date | Feb 21, 2012 |
| Priority date | — |
| Expiry date | Dec 2, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H31/003
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrical switching device has a displaceable contact piece mounted on an encapsulated housing. The displaceable contact piece extends within and outside of the encapsulated housing. The displaceable contact piece is sealed gas-proof in relation to the encapsulated housing. For forming a gas-proof transition, first and second sealing elements are provided, which, as axial sealing elements, are alternately pressed against the encapsulated housing by peripheral collars of the displaceable contact piece. A third sealing element is provided for sealing the displaceable contact piece in a radial direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.