Baths – closets – sinks – and spittoons – Flush closet – With holding tank
Patent
1990-08-15
1992-05-26
Recla, Henry J.
Baths, closets, sinks, and spittoons
Flush closet
With holding tank
4323, E03D 100
Patent
active
051155206
ABSTRACT:
An aircraft toilet system includes a holding tank and a discharge pipe which extends to a service panel located near the skin of the aircraft. A poppet valve is located near the outlet end of the discharge pipe. Leakage of fluids past the poppet valve is corrected in a first embodiment by pressurized cabin air which is ported to a downstream side of the poppet valve and by venting the upstream side of the valve to the atmosphere. In a second embodiment, high pressure air from the aircraft's environment control system is ported to the downstream side of the valve. The resulting pressure differential holds the valve against its seat, and prevents fluid leakage in the event of a damaged valve seal.
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Clifton Alan A.
Colebrook Peter H.
Denkmann Robert H.
Razzak Jamil A.
Donahue B. A.
Fetsuga Robert M.
Recla Henry J.
Sproule R. H.
The Boeing Company
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