Patent ID: 6546905
Filing Date: 2003-04-15
Classification: B27B,F01L,F02B

Abstract:
A valve drive mechanism for an internal combustion engine of a portable, manually guided implement having an implement housing and a handle that spans the housing and that has a tubular grip disposed adjacent to a cylinder head of the internal combustion engine, wherein said tubular grip extends from one longitudinal side of said implement housing to another longitudinal side thereof, said valve drive mechanism further comprising:a valve control having a rocker arm that is pivotably mounted on said cylinder head between end of said rocker arm, wherein said rocker arm is pivotable about a pivot axis that is disposed transverse to a longitudinal axis of said rocker arm, and wherein said longitudinal axis extends approximately parallel to an adjacent portion of said tubular grip; and a control mechanism that acts on one, of said ends of said rocker arm for actuating a poppet valve having a valve stem on which the other end of said rocker arm acts.