Patent ID: 6230351
Filing Date: 2001-05-15
Classification: A47C,A61G

Abstract:
A seat cushion for reducing the occurrence of decubitus ulcers comprising:a first layer formed of a first foam material, the first foam material being conformable to a person's body responsive to increased temperature and pressure for exerting a uniform, non-shearing support of the person;the first layer having a plurality of transverse regions, including a first region positioned to support the person's lower lumbar gluteal region, and a second region positioned to support the person's thighs;each said transverse region having a stiffness selected to maximize the contact between said foam and the user's skin, and to exert a substantially uniform pressure against the skin of the person;said first region having a density of between about 5.0 and 6.0 lb/ft.sup.3 and an ASTM.RTM. D3574 tensile strength of about 14.6 @ 20 in/minute @ 22.degree. C.;said second region having a density of about 2.4 lb/; anda second layer atop the first layer and having a density of between about 5.0 and 6.0 and an ASTM.RTM. D3574 tensile strength of about 14.6 @ 20 in/minute @ 22.degree. C.