Patent ID: 7278384

Claim:
A two-step roller finger follower for use with a camshaft in a variable valve actuation train of an internal combustion engine, comprising: a) a low-lift cam follower having a central aperture, a first end for engaging a pivot point, and a second end for engaging a valve stem of said engine; b) a high-lift cam follower disposed in said central aperture; c) a locking assembly disposed in a bore in said low-lift cam follower for selectively engaging and disengaging said low-lift follower to and from said high-lift cam follower, said locking assembly comprises: a lock pin for providing said engagement and disengagement; and a switching pin disposed coaxially with said lock pin for urging said lock pin into said engagement; d) a blocking assembly for preventing said engagement and disengagement from occurring during a first predetermined portion of a rotational cycle of said camshaft.