Back to results
US 4,232,406 AGranted
Water closet ventilating system with vacuum breaker valve
OwnerLester R. Beeghly, George E. Gilchristinventors
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
OwnerLester R. Beeghly, George E. Gilchristinventors
Estimating the term…
A system for ventilating the toilet bowl of a water closet of the type having a standpipe in the flush tank thereof and wherein the lower end of the standpipe is connected to the conduit which extends between the flush tank and the flush ring in the toilet bowl and the upper end of the standpipe extends above the normal level of the water in the flush tank. The inlet of a suction fan communicates with the space above the level of the water in the flush tank and the outlet of the fan is connected to a suitable point of discharge for gases withdrawn from the toilet bowl. A vent passage extends from the exterior of the flush tank to the space above the level of the water in the flush tank, and a normally closed flapper valve, which is connected by linkage to a float that floats on the surface of the water in the flush tank, moves to an open position to prevent a vacuum from developing in the space above the level of the water in the flush tank when the tank is flushing the toilet bowl and the water level in the tank drops.
In a system for ventilating water closets of the type having a flush tank for storing water at a storage level, said flush tank having a cover adapted to fit thereon, a bowl having a flush ring with a plurality of apertures formed around the periphery of said bowl, conduit means connecting said flush tank with said bowl, a standpipe mounted within said flush tank and having its lower end communicating with said flush ring and its upper end communicating with the space above the normal level of the water in said flush tank, and means for effecting the withdrawal of gases from said space and consequently from said bowl, the improvement of which comprises the inclusion of means responsive to lowering of the water level in said flush tank for venting the space above the level of the water in said tank to the atmosphere during flushing so as to eliminate any vacuum in said space and thereby prevent any restriction of the flow of water from said flush tank into said bowl.
Dependencies are inferred from the claim text.