Combination round coil spring and rectangular torsion coil spring assembly

Claim 1

A bedding spring assembly comprising, a rectangular border frame having elongated side and end border members, a first series of laterally spaced parallel grid wires extending between the end border members, a second series of laterally spaced parallel grid wires extending between the side border members and crossing the first series of wires at right angles thereto, the two series of wires being fixedly connected at their ends to the border members and to each other at their crossing point to define a substantially planar grid of lateral and longitudinal rows of adjacent rectangular openings, a plurality of reversely U-shaped bends formed in at least one of said series of grid wires medially of said crossing points of said series of wires, each of said U-shaped bends being formed into a downwardly open hook, a first series of resilient wire spring components, each of said components of said first series comprising a head section located in a horizontal plane and a vertically extensive spring body section depending from said head section, a second series of resilient wire spring components, each of said components of said second series comprising a head section located in a horizontal plane and a vertically extensive spring body section depending from said head section, each of said head sections of said spring components of both said first and second series being fixedly mounted within at least two of said downwardly open hooks of grid wires so as to secure said spring components to said wire grid, each of said spring body sections of said first and second series of spring components being generally coil shaped and terminating at their lower ends in bottom attachment sections, means for securing said bottom attachment sections of each of said first and second series of spring components to a base, said generally coil shaped body sections of said first series of spring components being round so as to form circular compression coil springs, said generally coil shaped body sections of said second series of spring components being generally rectangular and defined by a succession of straight lengths of wire bent at right angles to the adjacent straight lengths to form rectangular torsion coil springs, said first and second series of compression and torsion coil spring components cooperating to form a compressible spring assembly having substantial resistance to side-sway of the top surface of said spring assembly, said spring components being arranged in lateral and longitudinal spring rows, and all of said rectangular torsion coil spring components being located at the end of either a lateral or a longitudinal spring row.