Air pump for vacuum toilet systems
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 4, 2000
Grant Date -
N/A
app pub date -
Jun 23, 1997
filing date -
Jun 23, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A vacuum toilet assembly including a vacuum toilet and a vacuum tank (e.g. a combined holding and vacuum tank) uses a simple air pump to remove air from the tank to create a partial vacuum. The air pump is capable of achieving about ten inches mercury of vacuum in an empty 9.5 gallon vacuum tank in roughly one minute, and can pump at least about one liter of liquid per minute. A combined sound muffler and odor filter and/or rat-tail check valve and noise reducer, is/are connected to the outlet from the air pump. The pump comprises a powered reciprocating diaphragm pump having a reciprocating diaphragm powered by an electric motor rotating an eccentric at about 2300 rpm, and oppositely directed first and second disk valves. The disk valves have elastomeric disk valve elements die-cut from flat sheets which cooperate with perforated concave surfaces in a dividing wall in the pump housing. The reciprocating diaphragm has a total stroke length of about 0.3-0.33 inches.
First Claim
Family
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Cited Art Landscape
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