Inflatable article with reforming and reinforcing structure

Details Inflatable article with reforming and reinforcing structure Inflatable article with reforming and reinforcing structure

1983-02-17

1985-10-22

Grosz, Alexander

Beds

Bedclothing

And means to facilitate changing thereof

2 18, 2413, 2DIG3, 4499, 4506, 4588, 297DIG3, 441 40, A47C 2708, A41D 1310, F41H 104

Patent

active

045479194

ABSTRACT:
An inflatable article, having a pair of gas impervious sheets which are heat welded together at their edges to form an envelope and are provided with parallelly spaced apart longitudinal first seams to define a plurality of air compartments between the pair of sheets, is provided with a reforming and reinforcing outer inflatable multiple-compartmented unit formed, on the wall of the envelope, by heat-sealing an additional outer sheet to one of the pair of gas impervious sheets at the edge portions and at the lines which lie between each two of the first longitudinal seams to form second seams whereby the article will achieve a stronger and stiffer construction and the acute fused edge portions thereof can be reformed by the expanded superimposed inflatable outer units adjacent to the edge portions.

REFERENCES:
patent: 3030640 (1962-04-01), Gosman
patent: 3780388 (1973-12-01), Thomas et al.
patent: 4150447 (1979-04-01), Miller

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