摘要 |
An all mechanical support surface (30, 48) that tracks the flotation properties of a true fluid and utilizes a series of constant restoring force springs (14, 49) connecting reciprocating pistons (10, 40) which have supporting surfaces (26, 27, 48, 60, 66) with multiple degrees of freedom to define a user supporting surface (30, 48) that assumes the shape of the user and minimizes the force differential areas of the user's skin.
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