Patent ID: 6382153
Filing Date: 2002-05-07
Classification: F01L

Abstract:
A variable valve actuating mechanism, comprising:a helical curved return spring having a first spring end and a second spring end, said first spring end associated with a frame member of said variable valve mechanism, said second spring end associated with an output cam of said variable valve actuating mechanism, said curved return spring having a radius of curvature and a plurality of coils, each of said plurality of coils being substantially concentric with said radius of curvature and having curved inside surfaces; and an elongate, curved guide member having a first guide end and a centerline, said first guide end affixed to said frame member, said centerline having a centerline curvature, said centerline curvature being substantially equal to said radius of curvature of said curved return spring, said guide member disposed within said curved return spring such that said plurality of coils substantially surround a periphery of said guide member.