Hydraulic and earth engineering – Drainage or irrigation
Reexamination Certificate
2006-12-03
2010-12-28
Bagnell, David J (Department: 3672)
Hydraulic and earth engineering
Drainage or irrigation
C405S037000, C405S040000, C405S053000, C210S170080
Reexamination Certificate
active
07857545
ABSTRACT:
An apparatus for a variable volume drain field for onsite wastewater renovation. The system includes at least one module having a weir-type inlet and a one-way flow control device. The modules displace and store wastewater, and allow for differential release of the stored wastewater. The inlet is positioned adjacent the top of the module and the one-way flow control device is adjacent the bottom. In one embodiment, the module includes a pipe with caps having the inlet and one-way flow control device. In another embodiment, the module includes a container and a lid. The container includes the inlet and a one-way flow control device is connected adjacent the bottom of the container. In one embodiment, the one-way flow control device is a flexible hose with a float attached to the free end of the hose. The other end of the hose is in fluid communication with the container.
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Bagnell David J
Fiorello Benjamin
Innovative Biosystems Engineering
Knox Patents
Kulaga Thomas A.
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