POUND WIRE HELICAL COMPRESSION SPRING, PARTICULARLY FOR USE IN MOTOR VEHICLES

摘要

A helical compression spring coiled from a round section wire and having a rate which progressively rises in part of the deflection range. The helical compression spring comprises two or three integrally connected portions of which at least one is of truncated conical shape, the turns of greatest diameter being situated at one or at both ends of the helical compression spring and the turns of the truncated conical portions being compressed flat without mutually touching in the form of a spiral when under maximum load. The wire diameter in the truncated conical portions of the spring is non-uniform and first increases from the end of the spring before decreasing again to the inner end of the truncated conical portions of the spring.