Fluid handling – Inflatable article
Patent
1988-03-30
1990-04-10
Rivell, John
Fluid handling
Inflatable article
137883, 5453, 5456, 297DIG3, 200 6158R, F16K 1520, A47C 2710
Patent
active
049151240
ABSTRACT:
A multiple inflatable/deflatable seat cushion bladder system has bladders arranged to receive pressurized air from one source without having fluid communication between the separate bladders when they are deflated or when an external load increases the pressure in one of the bladders. Input tubes are connected to the bladders and an inflation valve is connected to the input tubes for permitting fluid flow into the bladders while preventing fluid flow out of each of the bladders. An output tube is connected to the each bladder, and a deflation valve is connected to the output tubes for permitting fluid flow out of each bladder while preventing cross flow between the bladders. A switch assembly connected to the inflation valve and to the deflation valve allows the pressure in the bladders to remain constant or to be selectively increased or decreased.
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Jasco Products, Inc.
Rivell John
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