Nestable spring assemblies for bedding and furniture

Claim 1

A vertically extending stack of identical articles of manufacture in which each article in the stack comprises a grid unit of generally rectangular shape having a border wire and a plurality of spaced apart grid wires supported on said border wire and arranged in a criss-cross relation, and a plurality of upright spring modules arranged in a predetermined pattern on said grid unit and extending downwardly therefrom, each of said spring modules having upper and lower ends and being a one-piece wire body having a pair of ends forming means at the upper end of said spring module arranged in interfitting engagement with said grid unit so as to support the spring module on the grid unit, said one-piece wire body extending downwardly from said upper end of said spring module in a downwardly tapering shape to the lower end of said spring module, said body terminating at said lower end in not less than one torsion bar and not more than two torsion bars extending transversely of said wire body to guide the downward movement of one of said articles of manufacture into a nested position relative to another article of manufacture aligned therebelow to thereby enable a plurality of said articles of manufacture to be arranged in said vertically extending stack in which the spring modules on each grid unit are nested downwardly into the spring modules on the grid unit immediately therebelow, at least one of said spring modules in each grid unit extending in a direction transverse to at least one other of said spring modules in the grid to stabilize said articles of manufacture against relative movement in said stack.