Vacuum circuit breaker actuating assembly
US5422450A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 1, 1993 |
| Grant date | Jun 6, 1995 |
| Priority date | — |
| Expiry date | Oct 1, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H33/666
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A vacuum circuit breaker including a vacuum interrupter with a fixed electrode and a movable electrode arranged to be moved into contact with or separated from the fixed electrode. The vacuum circuit breaker includes a movable rod mounted on the movable electrode, an operating mechanism unit for generating operating force to perform the opening and closing operation of the vacuum interrupter, a main shaft mounted on the operating mechanism unit and a drive lever rotatably mounted on the operating mechanism unit by the main shaft for transmitting the operating force towards the vacuum interrupter. The vacuum circuit breaker further includes a crank lever rotatably mounted at a working end of the drive lever and a pressurizing unit provided in the drive lever and the crank lever for generating resilient force to resiliently maintain closed condition of the vacuum interrupter. A first end of the crank lever is linked to the movable rod and transmits the operating force to the movable rod and a second end of the crank lever is linked to the pressurizing unit and transmits the resilient force to the movable rod.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.