Mattress construction

Details Mattress construction Mattress construction

1975-04-21

1977-08-02

Gilliam, Paul R.

Beds

Bedsteads

Element or detail

A47C 2708

Patent

active

040387127

ABSTRACT:
A mattress includes a first bag forming a first cavity and being disposed within a second bag of substantially the same size. Each of the bags includes a pair of generally flat portions connected at a peripheral edge. Two separate continuous lap seams join the bags inwardly of their edge portions on opposite sides of the bags. These seams define with the edge portions of the bags a second cavity which is disposed around the first cavity. The first cavity can be filled with water to form a water mattress and the second cavity can be filled with air to form a peripheral air frame.
In a preferred method, the mattress can be formed from four vinyl sheets of the same size using only four horizontal lap seams. The first bag can be provided with an inner peripheral lap seam by removing a ground rod associated with a heat sealer through a water valve. The second bag can be provided with an external peripheral seam by removing the ground rod through an air valve.

REFERENCES:
patent: 3778852 (1973-12-01), Penn et al.
patent: 3842455 (1974-10-01), Whitney
patent: 3918110 (1975-11-01), Cantillo

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