| 摘要 |
The invention relates to a circuit breaker including a chargeable contact-closing spring assembly, a drive cam and cam follower for charging the spring assembly, and means for releasably latching the spring assembly in its charged condition. …<??>The latching means include a latch surface (153) and a latch pin (282) on the drive cam (126), and a releasably latchable latching member (154) having a latching surface (284) and preferably also a resetting surface (296). The latch surface (153) on the drive cam cooperates with the cam follower (120, 132) to latch the spring assembly (148) in its charged condition and to receive therefrom torque tending to drive the cam to a spring-releasing position, and the pin (282) cooperates with the latching surface (284) and resetting surface (296), respectively, to latch the drive cam against spring release movement thereof, and to relatch the latching member (154) after release. |
