Patent ID: 6345597
Filing Date: 2002-02-12
Classification: F01L

Abstract:
A non-rotatable valve lifter mechanism for actuating at least one intake and exhaust valve in an internal combustion engine, comprising, in combination, a rotatable cam shaft, at least one cam lobe extending outwardly peripherally around said cam shaft, said cam lobe having a peripheral outer surface, a confinement member on said cam shaft located on one side of said cam lobe extending outwardly from said cam shaft, a valve lifter disposed at said cam lobe, said valve lifter having a follower for riding against said peripheral outer surface of said cam lobe to move said valve lifter toward and away from said cam shaft in accordance with the rotational position of said cam lobe, and said valve lifter having an abutment member disposed in moving contact with said confinement member to prevent rotation of said valve lifter during reciprocal movement of said valve lifter toward and away from said cam shaft.