Liquid supporting furniture

Claim 1

In a support for floatingly supporting at least one human body; a single substantially stationary bladder of flexible substantially inelastic material defining a load supporting chamber, said bladder having an upper wall of sufficient size to support the human body and being constrained in the vertical direction, the height of said load supporting chamber being sufficient that a human body on said upper wall conforms the wall to the lower body surfaces and is floatingly supported above the bottom of said bladder; a body of liquid enclosed within and filling said bladder so there is substantially no air therein; a head tank forming an end portion of said bladder and carrying a head of liquid in communication with said body of liquid and extending at all times upwardly from the upper wall of said bladder; and a single rigid circumscribing framework enclosing said single bladder and being separable therefrom; said end portion of said bladder having opposite walls respectively secured to opposed members of said single rigid framework, one of said opposed members being adjustably positioned with respect to the other to selectively vary the distance therebetween; whereby the liquid pressure in said load supporting member is adjusted by means of movement of said adjustably positioned framework member with respect to said opposed member.