Liquid purification or separation – Structural installation – Geographic
Reexamination Certificate
2007-05-08
2007-05-08
Menon, Krishnan S. (Department: 1723)
Liquid purification or separation
Structural installation
Geographic
C210S120000, C210S121000, C210S123000, C210S109000, C210S106000, C210S136000, C210S263000, C210S290000, C210S429000, C210S436000, C220S202000, C220S203290
Reexamination Certificate
active
10647102
ABSTRACT:
A filter assembly is provided that includes a hood, a drain manifold, a filter disposed between the hood and the drain manifold, a drainage space that is disposed between and in fluid communication with both the filter medium and the drain manifold, a check valve that is configured to permit air to escape but not to enter the drainage space so that a siphon can be established that draws additional fluid through the filter medium and into the drain manifold, the siphon continuing until air entering the hood disrupts the siphon, and a check valve cap that is configured to permit air to escape the check valve while preserving an air-filled void above the check valve when the filter assembly is submerged.
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Aberle Daniel W.
Lenhart, Jr. James H.
Contech Stormwater Solutions Inc.
Menon Krishnan S.
Thompson Hine LLP
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