| 摘要 |
<p>A double motion circuit breaker comprises a housing enclosing a driving contact and a driven contact disposed in a spaced apart relationship and relatively movable toward and away from each other, the driving contact being actuated by an operating mechanism of the circuit breaker, and a mechanical linkage coupled to both the driving and driven contacts for guiding and facilitating their relative motion thereof, the mechanical linkage comprising a sprocket wheel, a chain engaging the sprocket wheel and extending between two ends, one end of the chain being operably coupled to the driving contact and another end being operably coupled to the driven contact, and a biasing member operably coupled to the sprocket wheel for guiding rotation of the sprocket wheel.</p> |
