Switchgear apparatus comprising a mechanical visualization means with three positions
US6144002A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 1999 |
| Grant date | Nov 7, 2000 |
| Priority date | — |
| Expiry date | Sep 28, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2003/3073
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A switchgear apparatus having at least one movable contact biased in an open position by an opening spring, a loading mechanism of a closing spring and a kinematic opening and closing system linking the closing spring, the movable contact and the opening spring. The system is controlled by an opening latch and a closing latch. A closing order can be validly transmitted only to the closing latch when the apparatus is in a "ready to close" state, i.e. open, loaded and without a permanent opening order. The switchgear apparatus has an indicator with three positions: a "not loaded" position, a "ready to close" position, and a third "loaded and not ready to close" or "loaded disengaged" position. The indicator is kinematically linked to the loading mechanism, the opening latch, and the movable contact.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.