Pneumatic cushion

Details Pneumatic cushion Pneumatic cushion

1988-08-17

1989-08-29

Grosz, Alexander

Beds

Bedclothing

And means to facilitate changing thereof

5441, 297DIG3, 297DIG8, A47C 2708

Patent

active

048603970

ABSTRACT:
A pneumatic cushion having preinflated sealed cells with pressure compensators for distributing air between cells in response to loads placed thereon, the pneumatic cushion having a mid sheet with top and bottom surfaces, a top layer of preinflated sealed cells attached to the top surface of the mid sheet, a bottom layer of preinflated sealed cells attached to the bottom surface of the mid sheet, and pressure compensators affixed to the mid sheet and in communication with each top and bottom cell whereby upon uneven loading of the sealed cells air is stepwise transferred by the pressure compensators from a cell of high pressure on a first layer to a cell on a second layer and then to another cell on the first and so on to smooth out the uneven pressure.

REFERENCES:
patent: 2434641 (1948-01-01), Burns
patent: 4076872 (1978-02-01), Lewicki et al.
patent: 4741057 (1988-05-01), Rosier et al.

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