Patent ID: 6712346
Filing Date: 2004-03-30
Classification: B60G,F16F

Abstract:
A helical compression spring for a vehicle suspension to be compressed between an upper seat and a lower seat, said spring being formed to provide a coil axis to be substantially curved at a predetermined radius of curvature in an unloaded state of said spring,wherein a pitch of a lower end coil of said spring is set to tilt a lower end plane of said spring seated on said lower seat at a first predetermined angle to said lower seat in a direction for shortening the longitudinal length of said spring at the inside of the curvature in the unloaded state of said spring, and/or a pitch of an upper end coil of said spring is set to tilt an upper end plane of said spring seated on said upper seat at a second predetermined angle in a direction for shortening the longitudinal length of said spring at the outside of the curvature in the unloaded state of said spring, and wherein the pitch of said lower end coil is set to tilt the lower end plane of said spring at a third predetermined angle to said lower seat on a plane including an end coil center line connecting the centers of said upper end coil and said lower end coil perpendicular to a plane including said end coil center line and said curved coil axis, in the unloaded state of said spring, and/or the pitch of said upper end coil is set to tilt the upper end plane of said spring at a fourth predetermined angle to said upper seat on the plane including said end coil center line perpendicular to the plane including said end coil center line and said curved coil axis, in the unloaded state of said spring.