US 12,442,168 B2
Flushometer system
Jon Demczewski, Batavia, IL (US); Corey Dahlberg, Orland Park, IL (US); John Wilson, Naperville, IL (US); and Richard Schultz, Niles, IL (US)
Assigned to Sloan Valve Company, Franklin Park, IL (US)
Filed by Sloan Valve Company, Franklin Park, IL (US)
Filed on Jul. 26, 2021, as Appl. No. 17/300,504.
Claims priority of provisional application 63/056,151, filed on Jul. 24, 2020.
Prior Publication US 2022/0025627 A1, Jan. 27, 2022
Int. Cl. E03D 1/32 (2006.01); E03D 1/30 (2006.01); E03D 1/34 (2006.01); E03D 1/36 (2006.01); E03D 3/06 (2006.01)
CPC E03D 1/302 (2013.01) [E03D 1/32 (2013.01); E03D 1/34 (2013.01); E03D 1/36 (2013.01); E03D 3/06 (2013.01)] 30 Claims
OG exemplary drawing
 
1. A flushometer system comprising:
a pressure vessel comprising a valve inlet chamber configured to receive fluid from a plumbing system and an outlet configured to discharge the fluid to a plumbing fixture, with a flow path defined between the valve inlet chamber and the outlet;
a valve assembly disposed within the pressure vessel and comprising a valve body configured to be moveable to selectively open and close the flow path between the valve inlet chamber and the outlet;
a primary diaphragm assembly disposed within the pressure vessel and comprising a primary chamber in fluid communication with the valve inlet chamber, a primary disc moveable within the primary chamber and operably connected to the valve body such that the valve body is moveable with the primary disc, and a primary diaphragm having an outer edge fixed with respect to the pressure vessel and a center portion engaging the primary disc and moveable with the primary disc, wherein the primary disc and the primary diaphragm are moveable between a lowered position, where the valve body is configured to close the flow path between the valve inlet chamber and the outlet, and a raised position, where the valve body is configured to open the flow path between the valve inlet chamber and the outlet;
a secondary diaphragm assembly disposed within the pressure vessel and comprising a secondary chamber in fluid communication with the primary chamber, a secondary disc moveable within the secondary chamber, and a secondary diaphragm engaged with the secondary disc and having a portion moveable with the secondary disc, wherein the secondary disc and the secondary diaphragm are moveable between a first position, where the secondary diaphragm is configured to seal against fluid flow from the primary chamber into the secondary chamber, and a second position, where fluid can flow from the primary chamber into the secondary chamber to vent the primary chamber;
an activation assembly comprising at least one of a plunger and a solenoid assembly configured to be activated to selectively vent the secondary chamber to move the secondary disc and the secondary diaphragm from the first position to the second position,
wherein movement of the secondary disc and the secondary diaphragm to the second position is configured to vent the primary chamber to move the primary disc and the primary diaphragm from the lowered position to the raised position.