Adjustable firmness cushion with multiple layered foam-filled co

Details Adjustable firmness cushion with multiple layered foam-filled co Adjustable firmness cushion with multiple layered foam-filled co

1980-08-25

1983-02-08

Grosz, Alexander

Beds

Bedclothing

And means to facilitate changing thereof

5455, 297DIG3, A47C 2710, A47C 2718

Patent

active

043719970

ABSTRACT:
Foam plastic pads are contained in separate air-tight compartments with each of the compartments having an air passage which is controlled by a manually operated valve. The person using the cushion first allows air to enter the compartments, then rests on the cushion and allows the air to exhaust until the cushion feels comfortable as it forms to the contour of the person's body and the valve is then closed and the cushion will hold its shape for some time or until the valve is opened.

REFERENCES:
patent: 2691179 (1954-10-01), Kann
patent: 2750606 (1956-06-01), Freedlander et al.
patent: 2779034 (1957-01-01), Arpin
patent: 2938570 (1960-05-01), Fladole
patent: 2997100 (1961-08-01), Morris
patent: 3608961 (1971-09-01), Von Heck
patent: 3644949 (1972-02-01), Diamond

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