Reticulated material body support and method

Abstract

A support cushion including a top surface, a bottom surface opposite top surface, a layer of flexible foam having plurality of cells defining a reticulated cellular structure, the reticulated cellular structure cells comprising a skeletal plurality of supports through which substantially open cell walls establish fluid communication between interior of the cell and interiors of adjacent cells, the layer of flexible foam having density no less than about 30 kg/m 3 and no greater than about 175 kg/m 3 , and hardness of no less than about 20 N and no greater than about 150 N at 40% indentation force deflection measured at about 22 degrees Celsius, the layer of flexible foam comprising visco-elastic foam having at least one material property responsive to temperature change in range of 10-30° C., and layer of polyurethane foam located beneath layer of flexible foam, the layer of polyurethane foam having hardness of at least about 50 N.

What is claimed is: 
     
         1 . A mattress comprising:
 a first layer of non-reticulated foam and having a density of no less than 30 kg/m 3 ; and   a second layer of reticulated visco-elastic foam supporting the first layer of non-reticulated viscoelastic foam, and having a density of no less than 60 kg/m 3 .   
     
     
         2 . The mattress of  claim 1 , further comprising a flexible foam support layer beneath the second layer of reticulated visco-elastic foam. 
     
     
         3 . The mattress of  claim 2 , wherein the flexible foam support layer has a profiled upper surface. 
     
     
         4 . The mattress of  claim 1 , wherein the second layer of reticulated viscoelastic foam has a density of no less than 70 kg/m 3 . 
     
     
         5 . The mattress of  claim 4 , wherein the first layer of non-reticulated foam has a density of no less than 60 kg/m 3 . 
     
     
         6 . The mattress of  claim 5 , wherein the first layer of non-reticulated foam has a density of no less than 100 kg/m 3 . 
     
     
         7 . The mattress of  claim 1 , wherein the first layer of non-reticulated foam is non-reticulated visco-elastic foam. 
     
     
         8 . The mattress of  claim 1 , wherein the first layer of non-reticulated foam has a temperature absorbing surface. 
     
     
         9 . A mattress comprising:
 multiple layers of flexible foam comprised of at least a first layer of non-reticulated visco-elastic foam and a second layer of reticulated visco-elastic foam,   wherein the multiple layers are in a stacked arrangement with the second layer supporting at least the first layer.   
     
     
         10 . The mattress of  claim 9 , wherein the first layer has a density of between about 30 kg/m 3  and about 80 kg/m 3  and the second layer has a density of between about 60 kg/m 3  and about 100 kg/m 3 .