Back to results
US 5,855,415 AGranted
Portable seat cushion having pressure-reducing properties
OwnerDaniel T. Lilley, Jr.inventor
Life of this patent
Estimating the term…
Abstract
A novel, lightweight portable seat cushion using low-to-medium density cellular elastomer foams with pressure-reducing properties to maximize user comfort and a method for manufacturing one configuration of said cushion.
Claims2
A portable seat cushion having a mechanically laminated foam composite comprising of
- a) at least one upper foam layer of IFD between about 15 and 25, having low impact resilience of not more than 15;
- b) at least one intermediate foam layer having low impact resilience between 5% and 15% and having IFD between 30 and 50;
- c) at least one lower foam layer having medium impact resilience not less than 30% and IFD not less than 110;
- d) at least one superposed layer segment of low-to-medium resilience foam having impact resilience between 5% and 50% and IFD between 25 and 55;
- and
- e) said foam layers ranging in density from 24 kg/m.sup.3 to 96 kg/m.sup.3 ;
- and
- f) wherein said foam layers are mechanically laminated to produce a multi-layer composite.
5 more elements
Dependencies are inferred from the claim text.