Patent ID: 7392776

Claim:
The combination of a rocker arm and a push rod for use in an internal combustion engine, wherein said rocker arm comprises a body having a longitudinal axis plane, a valve stem contact end portion, a push rod connection end portion, and an intermediate portion which is provided with pivot means adapted for pivotally mounting the rocker arm on an engine head, wherein a trunion shaft is rotatably mounted in bearing means on said push rod connection end portion and is affixed in an adjustable set position on an upper end of said push rod, whereby pivoting of said arm on an engine head will cause said trunion shaft to rotate and substantially maintain an operative axial posture of the push rod, and wherein said push rod is externally threaded at its upper end, wherein said trunion shaft is provided with a bore having internal threads mating with the push rod threads whereby said push rod can be screwed axially through said bore to adjust a valve lift distance, and wherein a nut is threaded onto said upper end and adapted to tightly engage said trunion shaft and prevent untimely rotation of said push rod within said bore.