A cylinder head assembly is disclosed for an internal combustion engine which has a cylinder head with a reciprocal valve member. A rocker arm is pivotably positioned in the cylinder head in a low and compact manner for actuation of the valve member. Camming surfaces are located between a rotatable shaft...http://www.google.fr/patents/US5235942?utm_source=gb-gplus-shareBrevet US5235942 - Cylinder head assembly
