Containment manhole

Details Containment manhole Containment manhole

1987-02-24

1988-08-16

Thronson, Mark J.

Receptacles

Container attachment or adjunct

Filling member

141 86, B67D 500

Patent

active

047638060

ABSTRACT:
A containment manhole is formed of an upper rim and a bottom sump portion connected by an expansion joint permitting radial and axial movement of the sump portion relative to the rim. The sump portion has an integrally formed drain for the drainage of spilled product in the manhole directly into the riser. The rim also has an upstanding flange and the lid of the manhole extends over the flange with a wide, downwardly sloped skirt directing water off the lid to the outer perimeter.

REFERENCES:
patent: 4278115 (1981-02-01), Briles et al.
patent: 4659251 (1987-04-01), Petter et al.

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