Patent ID: 7849546

Claim:
An internal spring array of a mattress, comprising: a plurality of springs; and a membrane with a plurality of holes; wherein said plurality of springs are mounted on opposite sides of said membrane such that said opposite mounted springs are mirror images of each other; wherein said plurality of springs are plastic; wherein said plurality of springs are comprised of a support plate, a plurality of spring arms, and a base; wherein said base attaches to said membrane such that said support plate is distal to said membrane; wherein said plurality of springs annularly spread when pressure is applied to said plurality of springs such that said spring arms deform downward and outward, and the support plate deforms outward; wherein said plurality of springs have varying spring flexibility dependent on the location of said plurality of springs relative to said membrane; wherein said plurality of springs are laid out in a pattern of varying spring flexibility; wherein said plurality of springs further comprise one or more mounting pins that extend from said base; wherein said plurality of springs are mounted on opposite sides of said membrane when said one or more mounting pins are pushed into said plurality of membrane holes; wherein said membrane has a plurality of ventilation apertures; wherein said pattern of varying spring flexibility is laid out in one or more symmetrical mirror image regions along said membrane.