Beds – Bedclothing – And means to facilitate changing thereof
Patent
1990-06-29
1991-06-11
Trettel, Michael F.
Beds
Bedclothing
And means to facilitate changing thereof
5464, A47C 2715
Patent
active
050221116
ABSTRACT:
A laminated foam mattress for reducing or relieving the pressure exerted against a user of the mattress. The matress includes an upper and a lower layer of polyurethane foam each of which is laminated to a middle layer of a different polyurethane foam. The upper and lower layers feature a polyurethane foam which is of a higher density than the middle layer. The upper and lower layers also include a higher initial softness ratio than the middle layer. The middle layer has higher 5, 25 and 65% indentation load deflection values (ILD) than the corresponding ILD values for the upper and lower layers which is attributable to the firm support provided by the middle layer. The middle layer is preferably about twice as thick as the upper and lower layers. The upper and lower layers each include a checkerboard-like upper surface. The combination of layers provides for a reduction in pressure points especially in those areas most susceptible to skin ulcers such as the hip and heel. The combination of layers work together to provide firm, comfortable support while distributing loads both between the individual and the upper layer and between the lower layer and the underlying support structure.
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Omalux (.TM.) foam brochure of E. R. Carpenter date ???.
Iris 10,000 brochure of E. R. Carpenter, 4/89.
Ostomy/Wound Management, vol. 26, Jan./Feb. 1990.
E. R. Carpenter Company Inc.
Trettel Michael F.
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