Device for actuating the contacts of a circuit breaker, comprising a torsion rod
US9466447B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2013 |
| Grant date | Oct 11, 2016 |
| Priority date | — |
| Expiry date | May 13, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2235/01
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit breaker has a stationary contact and a movable contact, and an actuator device for actuating it comprises a rigid drive shaft (8) that drives the movable contact, first resilient means for driving the movable contact, and a torsion bar (2) for driving the drive shaft, the torsion bar (2) being suitable for being deformed in twisting in order to assist the resilient means during an initial period while opening the contacts of the circuit breaker. The torsion bar (2) is housed inside the drive shaft (8). A first end (4) of the torsion bar (2) is constrained to turn with a ring (10). A second end (6) of the torsion bar (2) is constrained to turn with the drive shaft (8).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.