SPRING INTERIORS AND ARTICLES COMBINING SPRING INTERIORS

摘要

A spring interior has a main face, or an extension of a main face, which is non-planar and has varying contours determined at least in part by at least one stiff yet resilient former of wire, rod, strip or the like secured to the main face. Preferred formers have parallel limbs joined by an integral, transverse base. The limbs may be inserted into parallel helical wires of the spring interior if such are provided. The former may be bent before or after being secured to the spring interior. The spring interior may be heat-treated to relieve stresses after it is in its final shape.