Baths – closets – sinks – and spittoons – Flush closet – Reduced gravity environment type
Patent
1979-08-20
1981-06-30
Artis, Henry K.
Baths, closets, sinks, and spittoons
Flush closet
Reduced gravity environment type
4431, 251 5, 251 611, B64D 1102
Patent
active
042754704
ABSTRACT:
A non-circulating vacuum operated waste disposal system for aircraft having a toilet bowl connected to a vacuum waste holding tank by a drain connected to said bowl and to the vacuum waste holding tank. There is a flush valve in the drain having a flexible valve element movable between open and closed positions for opening or closing the drain. There is a control pressure chamber adjacent to the flexible valve element with the valve element exposed directly to the pressure or vacuum which may be within said control chamber. The valve element is held in open or closed position with respect to the drain depending upon whether there is a pressure or a vacuum in the pressure chamber. There is a connection from the pressure chamber to the cabin of the aircraft and also to the drain on the vacuum side of the flush valve. A solenoid valve is provided in the connection which is manually operable to connect cabin pressure or the vacuum in the drain to said control pressure chamber.
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Badger Everett H.
Rogerson Michael J.
Artis Henry K.
Rogerson Aircraft Controls
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