Patent ID: 8099811
Filing Date: 2012-01-24
Classification: A47C,B21F,F16F

Abstract:
1. A method of manufacturing a mattress assembly with a plurality of encased multi-stranded coil springs, each having a first terminal end and a second terminal end, arranged to define a mattress core, comprising: forming a spring wire being helically twisted in a first twist direction, with respect to the first terminal end; combining a plurality of the helically twisted spring wires and twisting the combined spring wires in a second twist direction, with respect to the first terminal end and opposite the first twist direction to form a stranded coil spring; encasing the multi-stranded coil spring in a pocket to form a encased multi-stranded coil spring; and positioning the encased multi-stranded coil spring in substantially parallel alignment to the other plurality of encased multi-stranded coil springs.