Patent ID: 8327475

Claim:
A bedding foundation comprising: a rectangular base; a spring assembly fixedly attached atop the base; padding overlying the spring assembly; a fabric covering surrounding the spring assembly, padding and base; the spring assembly comprising, a generally rectangular border wire having two parallel sides and two parallel ends; and a plurality of spaced and longitudinally extending support wires parallel the border wire sides, each of said support wires extending between the border wire ends and being welded thereto, each support wire being a continuous piece of wire having a plurality of flattened peaks and a plurality of flattened valleys, the flattened peaks being generally co-planar with the border wire and the flattened valleys being vertically displaced beneath and intermediate of the flattened peaks; wherein the border wire has a generally rectangular cross-sectional configuration and is re-shaped from a smaller diameter wire than a border wire having a circular cross-section having approximately the same beam strength, thereby enabling the nestably stackable wire core assembly to be made using less material.