Patent ID: 8695123

Claim:
A toilet for exhausting odorous air therefrom, comprising: a bowl; a trap; a self-contained ventilation system; a water tank; a water supply line; said bowl has a rim therearound wherein said bowl communicates with said rim; said bowl is for receiving human waste that produces the odorous air; said trap is contained in said bowl; wherein said trap is for communicating the contents in said bowl with a drain conduit so as to provide a passageway from said bowl to a drain stack; said ventilation system includes an exhaust blower having a blower inlet and a blower outlet; said blower inlet in communication with air space between the contents in said bowl and said rim; said blower outlet in communication with said drain conduit downstream from said trap; said exhaust blower further including a check valve between said blower outlet and said drain conduit for preventing the odorous air from flowing upstream from said drain stack into said blower outlet; said check valve is spring biased to a closed position and when closed blocks the odorous air from said drain conduit to said blower outlet; said check valve is selectively biased to an open position when said exhaust blower is activated at a pressure at said blower outlet thereby opening said check valve to allow odorous air to flow from said blower outlet to said drain conduit; and, wherein said exhaust blower includes a cut-off switch for deactivating said exhaust blower during a flush of said toilet.