Dual diaphragm pump assembly for a sanitation system
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United States of America Patent
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Sep 10, 2013
Grant Date -
Apr 9, 2009
app pub date -
Oct 3, 2008
filing date -
Oct 9, 2007
priority date (Note) -
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Abstract
A pump assembly includes a housing defining a working chamber, a water pump chamber and a waste pump chamber. A first diaphragm separates the water pump chamber and the working chamber. A second diaphragm separates the waste pump chamber and the working chamber. A common driver member interconnects the first diaphragm and the second diaphragm. Movement of the driven member to a first position creates a positive pressure in the water pump chamber and a negative pressure in the waste pump chamber. Movement of the driven member to a second position creates a negative pressure in the water pump chamber and a positive pressure in the waste pump chamber.
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