Pump assembly for air mattress

Details Pump assembly for air mattress Pump assembly for air mattress

1988-06-15

1990-06-05

Grosz, Alexander

Beds

Bedclothing

And means to facilitate changing thereof

417479, A47C 2708, F04B 4300

Patent

active

049301748

ABSTRACT:
An air mattress incorporating within it a pump having a variable volume chamber formed by a flexible sheeting material, located within the chamber is a block of foam material which biases the chamber to its maximum volume, an air outlet incorporating a one way valve restricts air to move outwardly from within the chamber, while an air inlet is maintained clear during a pumping operation and is selectively closed by the hand of the operator.

REFERENCES:
patent: 2772692 (1956-12-01), Russell
patent: 3042941 (1962-07-01), Marcus
patent: 3068494 (1962-12-01), Pinkwater
patent: 3112502 (1963-12-01), Forsberg
patent: 3133696 (1964-05-01), Mirando
patent: 3155991 (1964-11-01), Dunham
patent: 3995653 (1976-12-01), Mackal et al.
patent: 4015622 (1977-04-01), Pagani
patent: 4694515 (1987-09-01), Rogers, Jr.

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