Patent ID: 7191986

Claim:
A device for checking the operation of devices used to displace movable switch parts, comprising a coupling rod ( 13 ) connecting at least two movable switch parts with each other, and coupling the movement of one of the at least two movable switch parts with another one of the at least two movable switch parts, wherein the coupling rod ( 13 ) is comprised of two coupling rod parts ( 14 , 15 ) that are movable relative to each other in the axial direction, said coupling rod parts ( 14 , 15 ) comprising stops ( 32 , 33 ) arranged for the delimitation of relative axial movability of the coupling rod parts ( 14 , 15 ), and wherein sensors ( 34 , 35 ) are arranged for the detection of at least two different displacement positions of the coupling rod parts ( 14 , 15 ) relative to each other.