Protective unit to prevent contact with conductive contacts in a withdrawable space of switching device
US7067747B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 2002 |
| Grant date | Jun 27, 2006 |
| Priority date | — |
| Expiry date | Feb 25, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02B11/24
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A protective unit may prevent contact with conductive contacts in a withdrawable rack of a switching device. This may include one displaceable protective plate and lever arrangement for operating the protective plate. The lever arrangement has two levers that are interconnected in an articulated manner, of which a first lever can be operated by way of the switching device and the second lever is coupled to the mobile protective plate. A linking joint of the two levers acts simultaneously as the pivot bearing of the first lever and the first lever can be pivoted out of the displacement path of the switching device into an end position by way of a slide block that runs in a graded manner in the pivoting direction of the first lever.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.