Inflatable article with edge concealing means

Details Inflatable article with edge concealing means Inflatable article with edge concealing means

1985-09-16

1988-05-24

Grosz, Alexander

Beds

Bedclothing

And means to facilitate changing thereof

5449, 52 23, 297DIG3, A47C 2708

Patent

active

047456493

ABSTRACT:
An inflatable article includes at least one first gas impervious flexible sheet formed into an inflatable envelope having at least one heat-sealed edge by heat sealing, and at least one second sheet heat sealed to the first sheet to form an additional air compartment, wherein the second sheet has at least one marginal edge which is heat sealed along the heat sealed edge or along a seam adjacent to the heat sealed-edge with an adjacent portion thereof extending over the heat-sealed edge. The additional air compartment expands over and conceals the heat-sealed edge upon inflation.

REFERENCES:
patent: 3017642 (1962-01-01), Rosenberg et al.
patent: 3030640 (1962-04-01), Gosman
patent: 3788388 (1973-12-01), Thomas et al.
patent: 4150447 (1979-04-01), Miller
patent: 4467484 (1984-08-01), Nagatake et al.

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