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US 12,404,949 B2Granted
Rigid piston for use in a flush valve
AssigneeSDB IP Holdings, LLC
InventorsShawn D. Bush, Ryan W. Nottage
Life of this patent
Estimating the term…
Abstract
A rigid piston assembly for use in a conventional flush valve includes a rigid piston and a solenoid configured to fixedly engage within the valve body. A flush valve for a plumbing fixture as well as a method of retrofitting a piston valve into a diaphragm flush valve body which includes a rigid piston and solenoid configuration.
Claims12
A rigid piston for use in a flush valve, comprising:
- a disc shaped member having a central opening, an elongated hollow member that is attached to and extends down from the disc shaped member, a by-pass orifice defined in the disc shaped member, an adapter positioned in the rigid piston and extending into the elongated hollow member, and a hollow stem that extends from a cap into the adapter, wherein the adapter engages and forms a seal with the rigid piston around the central opening in the disc shaped member to prevent water from leaking between the adapter and rigid piston, and wherein the hollow stem forms a dual seal engagement with the adapter that includes a first seal with the adapter proximate the cap and a second seal with the adapter a location below the first seal to prevent water from leaking between the hollow stem and the adapter.
Dependencies are inferred from the claim text.