Patent ID: 6186102
Filing Date: 2001-02-13
Classification: F01L

Abstract:
A valve operating system for an internal combustion engine comprising a support shaft for supporting in a rotatable manner a roller which is in rolling contact with a valve operating cam, the support shaft being fitted in a fitting bore provided in a rocker arm, an engage groove which extends in a direction tangential to an imaginary circle about an axis of said support shaft, and which is provided on an outer surface of said support shaft, and a pin engaging with said engage groove and fixed in said rocker arm, wherein an insertion bore extends in a straight line through an inner surface of said fitting bore at a position corresponding to said engage groove of said support shaft and is provided in said rocker arm, and said pin is inserted into said insertion bore and is engaged with said rocker arm by crimping at least one end of said pin with a flat punch so as to be fixed in said rocker arm.