Patent ID: 7937789

Claim:
A convective cushion comprising: a plenum defined by a laterally extending bottom surface and a laterally extending top surface secured around a perimeter extending transversely therebetween to contain an open air space, an air flow structure formed of flexible air permeable textile material having a plurality of tubular spacers disposed in the air flow space to guide air flow laterally therethrough, said air flow structure spacing the top surface from the bottom surface, said top surface adapted for convective air flow delivered from said air flow structure over substantially the entire top surface responsive to a flow of air blown laterally through said plenum, said top surface being sufficiently impervious to air to retain greater air pressure within the air flow space, said air flow structure maintaining a substantial portion of said flow of air within a venting air flow in a coplanar direction laterally between said top and bottom surfaces to be directed laterally outward through said plenum proximate said perimeter, a portion of the flow of air permeating said tubular spacers to vent through said top surface; a power unit in fluid communication with the plenum, and housing a blower; a controller unit in communication with the blower; whereby a user resting atop the cushion is able to control the blower to deliver air as desired into the cushion to said air flow structure, to deliver said air as desired to said top surface producing the convective air flow over substantially the entire top surface.