Pressure relief vent for a waste holding tank
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United States of America Patent
Stats
-
Nov 15, 1994
Grant Date -
N/A
app pub date -
Sep 3, 1993
filing date -
Sep 3, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A vent for a removable toilet holding tank includes a valve member that is in communication with both the holding tank interior and the ambient atmosphere and is moved off its valve seat when the pressure within the holding tank exceeds the ambient pressure by an amount sufficient to overcome the force of gravity acting to hold the valve member against its valve seat. The vent further includes a second valve member which is operable to close the vent when the holding tank is removed from the toilet bowl thereby precluding spillage of the tank contents during handling of the tank when separated from the toilet bowl.
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Family
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Cited Art Landscape
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