Patent ID: 7322328

Claim:
Variable cam follower, used for changeable transmission of a lifting movement of a cam to valve train elements allocated to the cam follower in an internal combustion engine, comprising first and second cam follower parts assembled to form a tappet that is adapted to move longitudinally in a guide of the internal combustion engine, a hydraulic force transmission device with a variable length pressure space, which is bounded by a hollow cylindrical recess of the first cam follower part and by a rod of the second cam follower part which is guided in the hollow cylindrical recess to allow telescopic movement relative to the first cam follower part, wherein the pressure space is closeable by a slide, which is arranged within the cam follower and which is acted upon by an adjustable control pressure, an opening, which extends from the pressure space and opens into a channel, in which the slide runs, is formed in a base of the hollow cylindrical recess.