Mattress having an internal fluid containing chamber

US4055867A · kind A · utility

Inventor

• Raymond M. Phillips · Topanga, US

Key dates

• Filing date: Oct 17, 1975
• Grant date: Nov 1, 1977
• Expiry date: Oct 17, 1995

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A47C27/085
• WIPO field: Furniture, games
• WIPO sector: Other fields

Abstract

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 i…