Stormwater chamber with changing corrugation width angle

Details Stormwater chamber with changing corrugation width angle Stormwater chamber with changing corrugation width angle

2007-12-11

2007-12-11

Lagman, Frederick L. (Department: 3673)

Hydraulic and earth engineering

Drainage or irrigation

Having regulation of flow through channel

C405S046000

Reexamination Certificate

active

11441664

ABSTRACT:
An arch shape cross section molded plastic stormwater chamber, which has a multiplicity of corrugations, can be nested within another like chamber for shipment. The width and included angle between the opposing sides of each corrugation both decrease with elevation from the base of the chamber.

REFERENCES:
patent: 4759661 (1988-07-01), Nichols et al.
patent: 5336017 (1994-08-01), Nichols
patent: 5511903 (1996-04-01), Nichols et al.
patent: 5890838 (1999-04-01), Moore et al.
patent: 6129482 (2000-10-01), Ditullio
patent: 6322288 (2001-11-01), DiTullio
patent: 7118306 (2006-10-01), Kruger et al.

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