Fuse block with integral door sensing rotary disconnect

Abstract From the Canadian patent

A disconnect is coupled to a rotary shaft communicating with a door-mounted knob provides an operator on the shaft for engaging the door handle to detect closure of , the door. The operator includes a pair of coupling mechanisms that control the transmission of torque between the operator and the shaft depending on whether the , door is open or closed. Specifically when the door is closed, torque applied to the , operator in both directions is transmitted to the shaft. If the door is open torque, applied to the operator is only transmitted in one direction to disconnect power through , the disconnect unless the user performs a predetermined sequence of events to rotatably , the …