| 摘要 |
The appts. includes two movable operators each arranged to engage a respective movable controller element and including a blocking formation. The operators are independently movable between two positions so that predetermined movement of either operator partway from a first position toward a second places the blocking formation of this operator in the path of movement of that of the other so that the latter is prevented from moving towards its second position. Two electrical interlock contact assemblies each have pairs of stationary and movable bridging contacts. The bridging contacts are operated by the operators from a normally closed to an open position concurrently with contact closure of an auxiliary contact assembly of a respective circuit controller. |
