Multi-layer multi-material foam mattresses

Abstract

The multi-layer multi-material foam mattresses of the present disclosure and related inventions provide novel combinations of multiple layer, multiple material foam layers or stacks which provide unexpected and improved support characteristics and pressure relief and distribution. By combining multiple layers of visco-elastic or latex foam as the top structure of a mattress supported by underlying layers of a laminated urethane foam core, the conformance properties of visco-elastic or latex foam are achieved along with structural support from the underlying core. The multi-layer multi-material foam mattresses of the present disclosure and related inventions include in the various embodiments two or three layers of a first type of foam such as visco-elastic foam or latex foam, in combination with a multi-layer foam support core of a second type of foam such as urethane foam. The disclosed multi-layer / multi-material foam combinations provide superior comfort and conformance, pressure relief, orthopedic support and dampen motion transfer. The multiple layers of the first type of foam preferably have differing density and mass and / or thickness to provide relative gradation between layers and a aggregate performance of support and conformance to body contours and resulting pressure distribution, i.e., avoidance of pressure concentrations. The multiple layers of the second type of foam preferably have differing density and mass and / or thickness to provide relative gradation between layers and aggregate performance of softness and support for the overlying layers of the first type of foam.

Description

RELATED APPLICATIONS[0001]This application claims priority to U.S. Provisional Patent Application Ser. No. 61 / 325,410, filed on Apr. 19, 2010, which is incorporated herein by reference in its entirety.FIELD OF THE INVENTION[0002]The present invention and related disclosure is related to bed mattresses, and more specifically to foam bed mattresses having layers of different types of materials.BACKGROUND OF THE INVENTION[0003]Sleep plays an important role in a person's overall health and enjoyment of life. The quality and quantity of sleep affects the body's ability to function normally and the ability to reach peak performance. Physiologically, sleep affects brain activity, heart rate, blood flow to the brain, sexual arousal, and body temperature. Sleep deprivation shows a strong correlation to obesity, diabetes, stroke, depression, and hypertension. Restful sleep is dependent upon the level of comfort while lying prone. Concentration of pressure on certain parts of the body and poor...

AI Technical Summary

Benefits of technology

[0007]The multi-layer multi-material foam mattresses of the present disclosure and related inventions provide novel combinations of multiple layer, multiple material foam layers or stacks which provide unexpected and improved support characteristics and pressure relief and distribution.

Problems solved by technology

Concentration of pressure on certain parts of the body and poor skeletal alignment are significant causes of restless sleep.

Sleeping on a mattress or other support surface that does not properly support and conform to the shape of the body or to the spine's natural curves may significantly contribute to restlessness or inability to sleep.

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