Patent ID: 7614375
Filing Date: 2009-11-10
Classification: F01L

Abstract:
1. A two-step roller finger follower for use 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 in communication with a fulcrum point, a second end in communication with a valve of said engine, and a rotatable shaft receivable in at least one shaft orifice; b) a high-lift cam follower disposed to pivot in said central aperture about a pivot shaft in said low-lift cam follower and having a transverse slot opening therethrough for receiving said rotatable shaft; c) a bearing unit disposed between said rotatable shaft and said at least one shaft orifice; and d) a stop for engaging said high-lift cam follower to limit the rotation of said high-lift cam follower with respect to said low-lift cam follower wherein said stop includes a shaft sleeve surrounding said rotatable shaft.