Patent ID: 6912947

Claim:
A supporting device for supporting substrates in a component placement machine, which supporting device is provided with a housing ( 1 ), with a piston rod ( 5 ) arranged in the housing ( 1 ) and movable in its longitudinal direction by means of a pressurized fluid, exactly one end of said piston rod ( 5 ) projecting outside the housing ( 1 ), and with a locking mechanism ( 7 to 9 ) by means of which a displacement of the piston rod ( 5 ) in its longitudinal direction can be prevented, which locking mechanism ( 7 to 9 ) is provided with clamping members (B) displaceable transversely to the longitudinal direction of the piston rod ( 5 ) by adjusting means ( 7 ) between an active position, in which a displacement of the piston rod ( 5 ) in its longitudinal direction is prevented, and an idle position, in which the piston rod ( 5 ) can be displaced in its longitudinal direction, characterized in that the clamping members ( 8 ) are arranged in the housing ( 1 ) such that they directly engage the piston rod ( 5 ) in the active position of the clamping members ( 8 ).