US 12,435,502 B2
Flush valve and toilet assembly
Richard B. Sudol, Jr., Plainfield, NJ (US)
Assigned to AS America, Inc., Piscataway, NJ (US)
Appl. No. 18/035,978
Filed by AS America, Inc., Piscataway, NJ (US)
PCT Filed Nov. 22, 2021, PCT No. PCT/US2021/060307
§ 371(c)(1), (2) Date May 9, 2023,
PCT Pub. No. WO2022/109382, PCT Pub. Date May 27, 2022.
Claims priority of provisional application 63/117,216, filed on Nov. 23, 2020.
Prior Publication US 2023/0417039 A1, Dec. 28, 2023
Int. Cl. E03D 11/18 (2006.01); E03D 11/02 (2006.01)
CPC E03D 11/18 (2013.01) [E03D 11/02 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A toilet assembly, comprising
a toilet tank to hold flush water;
a flush valve assembly positioned in the toilet tank;
a toilet bowl;
a trapway in flow communication with the toilet bowl;
a container positioned in the toilet tank, and
a conduit extending from an interior of the container to the trapway,
wherein
the container is in flow communication with the toilet tank, the container having an open lower end and a closed upper end,
the trapway comprises a sump trap, a first upstream weir, a lower trap, and a second downstream weir, and
the conduit is coupled to the trapway at a position between the sump trap and the lower trap, and provides flow communication between the container and the trapway,
the first upstream weir is positioned 2.0 inches or more vertically above a highest point of a trapway inlet,
the sump trap contains a toilet bowl water seal between flush cycles,
the first upstream weir is positioned at a vertically higher point than the toilet bowl water seal,
the toilet assembly comprises an air volume defined by an upper end of the container, the conduit, and a portion of the trapway between the sump trap and the lower trap between flush cycles, and
the air volume is under a positive pressure above atmospheric pressure.