Leaching chamber with drain holes in base flange

Details Leaching chamber with drain holes in base flange Leaching chamber with drain holes in base flange

2004-12-20

2009-11-03

Safavi, Michael (Department: 3637)

Hydraulic and earth engineering

Drainage or irrigation

Porous or apertured pipe, flume, or tileway

C405S049000

Reexamination Certificate

active

07611306

ABSTRACT:
A molded plastic arch shape cross section corrugated leaching chamber has opposing perforated sidewalls running up from feet. Each foot comprises a horizontal flange, an outer-edge fin, and transverse ribs, which define compartments on the flange surface. Drain holes through the flange within each compartment enable water from nearby sidewall perforations to flow downwardly into the soil during use.

REFERENCES:
patent: 980442 (1911-01-01), Schlafly
patent: 3054342 (1962-09-01), McVicar
patent: 3802133 (1974-04-01), Gregory
patent: 4759661 (1988-07-01), Nichols et al.
patent: 5087151 (1992-02-01), DiTullio
patent: D329684 (1992-09-01), Gray
patent: 5419838 (1995-05-01), DiTullio
patent: 5890838 (1999-04-01), Moore et al.
patent: 6602023 (2003-08-01), Crescenzi et al.
patent: 2002/0044833 (2002-04-01), Kruger et al.

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