Patent ID: 7503300

Claim:
A finger lever of a valve drive of an internal combustion engine, which can be switched to different lifts for at least one gas-exchange valve, comprising an outer lever and an inner lever extending between arms of the outer lever and movable in a pivoting motion relative to the outer lever, wherein a borehole that extends in a longitudinal direction of the levers that includes a piston therein is located in one end of one of the levers wherein the piston can be displaced with a top side thereof having at least a portion located under a driving surface of one end of the other respective one of the levers, so that when coupled a large valve lift is generated and when decoupled a small or zero valve lift is generated, wherein on a bottom side of the finger lever a contact for a gas-exchange valve is located on one end and a complementary surface for a support element is located on an other end and wherein a force can be applied by at least one cam on a top side of at least the one of the levers that pivots away in a decoupled state, the piston is provided in a coupling region and also starting from an end thereof that extends in a coupling direction with a rising radial profile or with a falling radial profile the driving surface of the other lever is complementary to the profile with a corresponding shape, and when in a coupled state, a contact point of the piston lies on the driving surface in a region of half a depth of the driving surface.