Patent ID: 7275507
Filing Date: 2007-10-02
Classification: F01L,Y10T

Abstract:
1. A rail used as an anti-rotation guide for the valve train of an internal combustion engine comprising a rail having accepting spaces arranged in a row spaced apart at a distance from one another defined thereon for accepting inserted valve lifters, provided as roller tappets, each with two parallel anti rotator areas in the form of planar flattened zones provided on an exterior casing of the tappets for preventing rotation of each of the roller tappets around a central longitudinal axis thereof, the planar zones are supported on guide areas of the rail located inside of the corresponding spaces, and with the accepting spaces of the rail being associated with an insertion opening comprising a key hole, into which each of the respective roller tappets are inserted in a longitudinal axis direction thereof, subsequently displaced axially parallel towards the guide rails of the rail which serve as anti-rotation guides, and are subsequently shifted once more in the longitudinal axis direction, a protruding catch is arranged in the rail in an area of the space and a radial groove is arranged in the roller tappet in an area of the anti-rotation guide area, which engages the catch of the rail during the axially parallel displacement of the roller tappets.