Patent ID: 7861681

Claim:
Switchable valve train for gas-exchange valves of internal combustion engine, comprising a rocker arm device, in which a rocking motion about a rocker arm axis can be introduced by at least one cam or tappet, the rocking motion is transmittable to at least one valve, the rocker arm device includes at least one cam lever part in working connection with the cam and a valve lever part in working connection with the valve, which are supported so that the lever parts can rock about the rocker arm axis, a coupling device, which includes at least one clamping body, comprising a ball element and held in a receptacle borehole formed in a radial direction in the valve lever part, which can move between an engaged position and a released position, is located between the at least one cam lever part and the valve lever part, and is moveable between at least first and second positions to selectively engage or disengage a transmission of the rocking motion.