Patent ID: 8362374

Claim:
An apparatus for mutual interlocking of two switches, comprising: two plungers, each of the two plungers engaging in one of the two switches and being movable in a longitudinal direction of the plunger, wherein, when one switch is being switched on, the one of the two plungers which engages in the one switch is moved by pivoting of a control disk from a nil-point position to an opening position; and a blocking device to block pivoting of another control disk by moving the one of the two plungers which engages in the one switch its opening position, at least one blocking element of the blocking device being moved by the one of the two plungers which engages in the one switch when the one plunger is being moved to its opening position, such that pivoting of the another control disk with respect to the other of the two plungers, which is located in the nil-point position, is blocked.