Patent ID: 7845324

Claim:
A locking mechanism for a plural rocker arm valve train assembly adapted for use with a camshaft having a plurality of cam lobes having a plurality of cam lobe profiles, comprising: a pivot shaft parallel to said camshaft and defining a common axis located within said pivot shaft; a plurality of rocker arms pivotably contacting said pivot shaft, each having structures configured to be acted upon by respective lobes of said camshaft, wherein said plurality of rocker arms are pivotable about said common axis; wherein one of said plurality of rocker arms is an active rocker arm having a structure configured to act upon an engine valve; a movable locking element enclosed by said plurality of rocker arms; and said movable locking element being oriented to selectively move along said common axis to allow said active rocker arm to selectively engage one or more other of said plurality of rocker arms for common pivoting therewith, said selective engagement thereby varying displacement of said engine valve.