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US 4,055,867 AGranted
Mattress having an internal fluid containing chamber
OwnerRaymond M. Phillipsinventor
Life of this patent
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OwnerRaymond M. Phillipsinventor
Estimating the term…
A mattress having an upper fluid containing chamber and a lower chamber filled with a material rendering it effectively more rigid and which surrounds a portion of the fluid chamber. The mattress is comprised of upper and lower flexible sheets which are provided with peripherally extending downwardly and upwardly struck flaps, respectively, at their outer peripheral ends. These flaps are sealed to each other in order to form a completely enclosed mattress. A tapered, angularly struck inner peripheral wall extends effectively between the upper and lower walls of the mattress in such manner that the upper end of the inner peripheral wall extends to the outer peripheral margin of the upper wall and the lower end of the inner peripheral wall terminates inwardly of the outer peripheral margin of the lower wall. In this way, the inner peripheral wall operates in conjunction with the upper wall in order to form an inner fluid chamber which is essentially coextensive with the entire upper surface of the upper wall. A lower chamber is formed by the other side of the inner peripheral wall, the outer wall and the lower wall. Thus, the lower chamber increases in size with the increased depth in the outer peripheral wall. The inner peripheral wall and the flaps which form the outer peripheral wall may be either lap sealed or otherwise butt sealed to each other in accordance with the present invention. The present invention also provides a unique method of making the mattress of the present invention.
A liquid containing mattress for supporting an individual in an inclined position comprising:
A liquid containing mattress for supporting an individual in an inclined position comprising:
A liquid containing mattress comprised of upper and lower spaced apart walls, an outer peripheral wall extending between said upper and lower walls, an inclined inner peripheral wall extending between said upper and lower walls and having an inner wall section slightly spaced from said outer peripheral wall to form a liquid chamber between and substantially bounded by said upper wall and lower wall and the inner peripheral wall section and which is substantially contiguous along the surface of said upper wall, said inner peripheral wall extending inwardly with respect to said lower wall to form a material chamber between and substantially bounded by said lower wall and said outer wall and the inner peripheral wall section of said inner wall.
A method of making a mattress for supporting an individual in an inclined position comprised of a liquid chamber and a material chamber surrounding at least a portion of the liquid chamber, said method comprising:
A liquid containing mattress for supporting an individual in an inclined position, said mattress comprising:
A liquid containing mattress for supporting an individual in an inclined position, said mattress comprised of upper and lower spaced apart walls, an outer peripheral wall extending between said upper and lower walls, an inclined inner peripheral wall extending between said upper and lower walls to form a liquid chamber between and substantially bounded by said upper wall and lower wall and inner peripheral wall, said inner peripheral wall having an upper portion which extends in proximate relationship to the peripheral end margin of said upper wall to form said liquid chamber substantially continuous with said upper wall so that substantially the entire upper wall is supported by liquid in said liquid chamber, said inner peripheral wall extending inwardly with respect to the peripheral end margin of said lower wall and being secured thereto to form a material chamber between and substantially bounded by said lower wall and said outer wall and said inner wall, said material chamber when filled with a material providing continuous peripheral support by the material which is relatively less yieldable than the liquid in said liquid chamber, said liquid chamber having a periphery substantially contiguous with the periphery of said material chamber such that the material in said material can provide continuous peripheral support.
A liquid containing matteress for supporting an individual in an inclined position, said mattress comprising:
A liquid containing mattress comprised of upper and lower spaced apart walls, an outer peripheral wall extending between said upper and lower walls, an inclined inner peripherally extending wall extending between said lower wall and said outer peripheral wall and having an inner wall section spaced from said upper wall to form a liquid chamber between and substantially bounded by said upper wall and lower wall and the inner wall, said inner wall extending inwardly with respect to said lower wall to form a material chamber between and substantially bounded by said lower wall and said outer peripheral wall and the inner wall, said material chamber when filled with a material providing continuous peripheral support by the material which is relatively less yieldable than the liquid in said liquid chamber, said liquid chamber having a periphery substantially surrounding the periphery of said material chamber such that the material in said material can provide continuous peripheral support.
Dependencies are inferred from the claim text.