Plastic combined vacuum and holding tank
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United States of America Patent
Stats
-
Aug 3, 1999
Issued Date -
N/A
app pub date -
Apr 17, 1997
filing date -
Oct 31, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A vacuum sewage handling assembly particularly for boats and recreational vehicles or caravans has a minimum of components because the conventional vacuum and holding tanks have been combined into a single substantially unreinforced, non-cylindrical, all plastic tank. The tank has a contoured, convoluted, discontinuous surface (e.g. formed by grooves, channels, and other discontinuities) so that it has no continuous flat surface area of more than about 80 square inches. The combined vacuum and holding tank may mount a vacuum pump, and optionally mounts a sewage discharge pump. The tank preferably has a generally parallelepiped configuration, and an interior volume of between about 45-65 liters, has a maximum vacuum level of about 26 cm of mercury, and is connected to other conventional portions of a vehicle toilet system, including outlets penetrating the exterior of the vehicle. The tank may have wheels and a handle.
First Claim
Family
International Classification(s)
Cited Art Landscape
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