Patent ID: 7882815

Claim:
A hydraulic cam follower for the simultaneous actuation of several equal-acting gas exchange valves for a tappet pushrod valve train of an internal combustion engine, the cam follower comprising an outer part, having a bottom that forms or is at least indirectly connected to a cam contacting surface, and hollow cylindrical round broached or round reamed guides extend from a head of the outer part, in a number equal to a number of the equal-actuated gas exchange valves, in a direction toward the bottom, wherein in each of the hollow cylindrical guides a housing of a hydraulic play equalization element is provided with fine machined, ground outer casing that sits with a bottom side thereof on an inner side of the bottom of the outer part, wherein a concentric pressure piston is guided in a borehole of each of the housings starting from a head-side end of each of the housings and the concentric pressure piston is arranged so that it can move axially via an outer casing thereof, a non-return valve is provided at a bottom-side base of the concentric pressure piston, and a high-pressure space is provided axially between the bottom-side base and a bottom side of the housing, and a reservoir for hydraulic medium is formed between the bottom-side base and a head-side end of the pressure piston.