Liquid purification or separation – Structural installation – Flume stream type
Reexamination Certificate
2005-11-22
2005-11-22
Upton, Christopher (Department: 1724)
Liquid purification or separation
Structural installation
Flume stream type
C210S170050, C210S299000, C210S521000, C210S532100, C210S538000, C134S104200, C134S109000, C052S169700, C052S741120
Reexamination Certificate
active
06966984
ABSTRACT:
A unitary or modular, pre-cast, drive-down pit system suitable for use in a heavy equipment wash installation. The completed pit collects runoff generated by the washing of heavy equipment such as construction, industrial, farming, or road-building equipment. The pre-cast concrete separation unit and separate wall sections have tongue and groove mating ends that facilitate assembling the pit and provide for sealing against leakage of water. The wall sections have built-in rebar attachment and water block elements at an angle so as to provide for a strong and waterproof bond with the ramp floor. The ramp floor is concrete, poured after installation of the separation unit and the wall sections to complete the finished drive-down pit. The separation unit has up to four chambers: a primary solids collection section; a secondary solids settling chamber; a free oil separating section; and a pump water holding section.
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Fisher Geoffrey L.
Litman Richard C.
Solomon Michael A.
Upton Christopher
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