Mattress construction
OwnerMituyoshi Hamasuinventor
Life of this patent
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Abstract
A mattress construction comprises an intermediate layer of a semi rigid wave shaped resin material and with a top layer overlying the intermediate layer made of a resilient foamed resin material and a lower layer made of a resilient foamed resin material having a greater elastic restoring force than the upper layer. The greater elastic foamed restoring force may be accomplished by the increased density of the material being employed or by making the material of distinct substances giving the desired elastic characteristics. In one embodiment an electrified body in the form of a blanket is interposed between the intermediate layer and the top or upper layer.
Claims4
A mattress construction comprising an intermediate layer of a semi-rigid resin material having top and bottom surfaces with continuous outwardly projecting wave formations adjacent inwardly projecting concavities with the concavities of the bottom surface having a larger radiuus of concavities than that of the top surface and being formed in vertical alignment below the wave-shaped formations of said top surface, a top layer overlying said intermediate layer made of a resilient foam resin material and having a resiliency so as to become restored to its original shape after unloading, said top surface having a multiplicity of projections formed thereon in a regular spaced-apart pattern with concavities between adjacent projections, and a lower layer of a foamed resin material having a greater elastic restoring force than said top located below said intermediate layer.
Dependencies are inferred from the claim text.