Sewage tanks and grinder pump systems
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United States of America Patent
Stats
-
Oct 30, 2012
Grant Date -
Aug 26, 2010
app pub date -
Nov 19, 2009
filing date -
Aug 2, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
A sewage tank for use with a pump such as a grinder pump to convey sewage. The sewage tank includes a container having an upper portion and a lower tapering portion defining a chamber for containing the pump. The lower tapering portion has a reduced size compared to the upper portion. The upper portion and the lower portion may include a plurality of intersecting vertical ribs and horizontal ribs defining a plurality of recessed pockets. The lower portion of the sewage tank may also include an outwardly-extending flange sufficiently sized so that soil may be backfilled around the bottom of the tank to prevent the tank from floating upward out of the ground due to its buoyancy under high ground water conditions. The sewage tank may also include a stepped flange.
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Cited Art Landscape
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