초록 ▼

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

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.

대표청구항 ▼

A selft sealing sewer cover assembly for preventing flammable gases from escaping from a sewer inlet comprising: a. insert means having a top end and a bottom end for connection to a sewer inlet having generally vertical interior walls, said insert means having generally vertical walls on the exteri

A selft sealing sewer cover assembly for preventing flammable gases from escaping from a sewer inlet comprising: a. insert means having a top end and a bottom end for connection to a sewer inlet having generally vertical interior walls, said insert means having generally vertical walls on the exterior thereof for parallel alignment with said generally vertical interior walls of said sewer inlet, b. trough means connected to said bottom end of said insert means and extending completely around the interior of said generally vertical walls of said insert means for containing water, said trough means having an inner generally vertical wall defining an opening through which water overflowing from said trough means can flow, said inner generally vertical wall of said trough means having a height less than the height of said generally vertical wall of said insert means, c. removable screen assembly means for collecting trash adapted to fit inside said insert means and over said trough means, d. a lid means lying in said trough means and over and around said opening to prevent gases from traveling through said opening when said trough means is filled with water while permitting liquids to flow through said opening, and e. a cover means lying on top of said insert means, said cover means having a plurality of channels therein through which liquids may flow.