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A support cushion has a flexible, airtight casing having a support layer on one side defining a support surface for being engaged by a portion of a body to be supported. A resilient layer of foam is disposed within the casing generally coextensive with the casing support layer support surface for no

A support cushion has a flexible, airtight casing having a support layer on one side defining a support surface for being engaged by a portion of a body to be supported. A resilient layer of foam is disposed within the casing generally coextensive with the casing support layer support surface for normally urging the casing toward an expanded condition. A fluid-filled pad is positioned within the casing adjacent the additional foam material. A valve is mounted to the casing for communicating with the interior of the casing and is operable for preventing or permitting flow of air through the valve into and out of the casing.

대표청구항 ▼

A portable cushion for supporting the back of a seated human body said cushion adapted to be removably positioned adjacent a seating surface comprising: a flexible, airtight casing having at least a front support layer and a rear bearing layer, said casing having a lower region to be disposed adjace

A portable cushion for supporting the back of a seated human body said cushion adapted to be removably positioned adjacent a seating surface comprising: a flexible, airtight casing having at least a front support layer and a rear bearing layer, said casing having a lower region to be disposed adjacent a lower region of the back and an upper region to be disposed adjacent an upper region of the back; valve means mounted to said casing for communicating with the interior of said casing and operable for preventing or permitting flow of air through said valve means into and out of said casing; a rear layer of resilient foam material positioned on said casing rear bearing layer and extending into said upper and lower regions of said casing; a fluid-filled pad positioned in front of a portion of said rear layer of resilient foam material in said lower region of said casing; at least one upper mass of resilient foam material extending upwardly from said fluid-filled pad in said casing upper region; and a front layer of resilient foam material disposed to extend over said upper mass of resilient foam material and said fluid-filled pad.