Leaching chamber with varying slot opening height

Details Leaching chamber with varying slot opening height Leaching chamber with varying slot opening height

2007-03-12

2008-09-02

Mayo, Tara L. (Department: 3671)

Hydraulic and earth engineering

Drainage or irrigation

Porous or apertured pipe, flume, or tileway

C405S046000, C405S049000, C138S105000, C138S173000

Reexamination Certificate

active

07419331

ABSTRACT:
A continuous curve arch shape cross section leaching chamber made of molded thermoplastic has closely spaced corrugations and sidewalls, portions of which are perforated with horizontal slots. Either or both of the slot height and the local wall thickness which defines the slots may vary with slot elevation from the base, so that a perforated sidewall configuration is achieved which resists entry of surrounding soil.

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patent: 6361248 (2002-03-01), Maestro
patent: 6612777 (2003-09-01), Maestro

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