Latching operating mechanism of a three-position circuit breaker
US4821008A · kind A · utility
8Cited by
1References
7Claims
0Family size
Inventors
Key dates
| Filing date | Jan 20, 1988 |
| Grant date | Apr 11, 1989 |
| Priority date | — |
| Expiry date | Jan 20, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H3/3047
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A latching mechanism comprises an energy storage system having a first closing spring, and a second opening and earthing spring, arranged between a transmission device and a closing control crankshaft and an earthing crank. A retaining plate pivoting on an axis cooperates on the one hand with an opening control lock by means of a unidirectional locking and on the other hand with the crankshaft by means of two latchings. The first latching is released during the opening travel after the lock has been unlocked, and the second latching causes positive locking of the device at the beginning of the closing travel of the crankshaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.