US 12,227,929 B2
Siphon flush valve and toilet assembly
Robert M. Jensen, East Brunswick, NJ (US)
Assigned to AS America, Inc., Piscataway, NJ (US)
Appl. No. 18/023,023
Filed by AS America, Inc., Piscataway, NJ (US)
PCT Filed Aug. 25, 2021, PCT No. PCT/US2021/047505
§ 371(c)(1), (2) Date Feb. 24, 2023,
PCT Pub. No. WO2022/046876, PCT Pub. Date Mar. 3, 2022.
Claims priority of provisional application 63/070,697, filed on Aug. 26, 2020.
Prior Publication US 2023/0323649 A1, Oct. 12, 2023
Int. Cl. E03D 1/26 (2006.01); E03D 1/012 (2006.01); E03D 1/08 (2006.01); E03D 11/02 (2006.01)
CPC E03D 1/263 (2013.01) [E03D 1/012 (2013.01); E03D 1/08 (2013.01); E03D 11/02 (2013.01)] 20 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; and
a trapway in flow communication with the toilet bowl,
wherein, the flush valve assembly comprises
a container having an open lower end and a closed upper end;
a siphon flush valve positioned in the container upper end; and
a conduit positioned in an interior of the container,
wherein
the container is in flow communication with the toilet tank,
the conduit is coupled to the trapway and provides flow communication between the container and the trapway,
the siphon flush valve comprises a tubular core, a head surrounding a top of the core, and a fluid spray initiator coupled to the head, the spray initiator configured to discharge water into the core to induce a siphon flow of surrounding tank water through the core,
the trapway comprises a sump trap and a lower trap, and wherein the conduit is coupled to the trapway at a position between the sump trap and the lower trap, and
when between flush cycles, 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.