Self sealing sewer cover assembly

Details Self sealing sewer cover assembly Self sealing sewer cover assembly

1987-02-19

1988-10-11

Novosad, Stephen J.

Road structure, process, or apparatus

Pavement

Vault cover-closure

210164, E02D 2914

Patent

active

047767227

ABSTRACT:
A self sealing sewer cover assembly for preventing flammable gases from being discharged from a sewer and for preventing the ignition of gases in a sewer by flames and sparks in the adjacent to the sewer inlet. The apparatus of the present invention comprises a cover assembly which may replace or be used in combination with an existing cover or grating on a sewer inlet and may be inserted into the inlet to a sewer. The apparatus of the present invention provides a water barrier between gases contained in the sewer and the ambient air adjacent to the sewer inlet which prevents the flow of gases from the sewer to the ambient air surrounding the sewer inlet.

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