Patent ID: 7000277

Claim:
A spring mattress comprised of foam material having a plurality of spatially distributed elastic spring elements, each of said elements being formed of flexible polyurethane foam, and a sheath which encases the foam material so as to yield a finished mattress, the mattress being produced by the step of: forming, through cutting and pouring operations, the plurality of spring elements in a starting slab of flexible polyurethane foam such that the spring elements are formed integral with and situated on a continuous lower portion of the slab, the slab having a given starting thickness defined by a desired height of the spring elements, and such that all said spring elements are spatially distributed on said lower portion with each such spring element being separated from an adjacent one of said spring elements and each of said spring elements has incoming portions, with an arched profile of differing magnitudes and varying depths, and outcropping portions, of differing thickness and variable depth; whereby said each of said spring elements, when subjected to pressure, is able to flex and compress.