SELF-ADAPTING SPRING SUSPENSION SYSTEM FOR VEHICLES

摘要

An automatically self-adapting spring suspension system is provided for road vehicles in which the springs are automatically readjusted to increase their stiffness in response to increase of load, and in response to any shock of such unusual severity that the wheels are caused to pass a predetermined point during relative approach of the wheels and chassis. Illustratively pneumatic springs are stiffened by the automatic addition of air under pressure. Provision is made for conveniently bleeding the air simultaneously and equally from the springs when a change of load, or of roughness of the road requires a reduction of spring stiffness.