Patent ID: 7275271
Filing Date: 2007-10-02
Classification: E03D

Abstract:
1. A ventilation system for a toilet, comprising; a toilet bowl having a gas trap and a rim a plurality of flush holes formed in said rim; a tank having a flush handle, a water refill tube, an overflow pipe in fluid communication with the flush holes and an exhaust pipe providing fluid communication between the tank and the gas trap; a water tight fan box disposed within the tank; an air compartment disposed within the fan box in fluid communication with the toilet overflow pipe such that air follows a path of travel through the flush holes and through the overflow pipe into the air compartment; an upwardly facing water trap disposed within the fan box adjacent the air compartment with a first side of the water trap in fluid communication with water in the tank and a second side in fluid communication with the air compartment such that water, at normal operating levels in the tank, enters the water trap to provide a seal between the air compartment and that part of the tank not containing water, whereby the seal between the air compartment and that part of the tank not containing water is maintained when water is expelled from the tank; a fan compartment having an inlet and an outlet disposed within the fan box, adjacent the air compartment with the inlet in fluid communication with the air compartment and the outlet in fluid communication with the exhaust pipe; a fan disposed within the fan compartment such that when the fan is activated, air is drawn through the flush holes up through the overflow pipe into the air compartment, through the fan compartment and into the exhaust pipe; and an activation switch communicatively coupled to the fan whereby manipulation of the activation switch completes an electrical circuit thereby activating the fan which draws air from the bowl through the flush holes and overflow pipe into the air compartment, into the fan compartment and through the exhaust pipe into the toilet drain downstream of the gas trap.