Leaching chamber with strengthened dome end

Details Leaching chamber with strengthened dome end Leaching chamber with strengthened dome end

2004-12-20

2008-09-02

Safavi, M. (Department: 3637)

Hydraulic and earth engineering

Drainage or irrigation

Porous or apertured pipe, flume, or tileway

C405S049000

Reexamination Certificate

active

07419332

ABSTRACT:
A molded plastic corrugated arch shape cross section leaching chamber has a dome end for forming a pivotable joint with a like chamber. The dome of the dome end has one or more preferably trapezoid shape shallow surface depressions, for strength. The depressions are specially placed so that soil cannot enter the interior of the chambers, regardless of the angle between the chambers.

REFERENCES:
patent: 5087151 (1992-02-01), DiTullio
patent: D329684 (1992-09-01), Gray
patent: 5511903 (1996-04-01), Nichols et al.
patent: 5588778 (1996-12-01), Nichols et al.
patent: 6076993 (2000-06-01), Gray
patent: D477381 (2003-07-01), Benecke
patent: 6679653 (2004-01-01), DiTullio
patent: 6698975 (2004-03-01), Benecke

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