Patent ID: 6543757
Filing Date: 2003-04-08
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 an end coil center line connecting the centers of an upper end coil and a lower end coil of said spring to be offset to a coil axis of a body portion of said spring,wherein a pitch of said lower end coil 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 one side of said spring closer to said end coil center line than said coil axis, in an unloaded state of said spring, and/or a pitch of said upper end coil 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 the other side of said spring closer to said coil axis than said end coil center line, 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 said end coil center line perpendicular to a plane including said end coil center line and said 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 coil axis, in the unloaded state of said spring.