Diaphragm stop for sensor-operated, battery-powered flush valve
First Claim
1. A sensor-activated, battery-powered toilet room flush valve including a body having an inlet and an outlet, a valve seat between said inlet and outlet, a valve member in said body positioned to close upon said seat to control flow from said inlet to said outlet,a cover mounted on said body and defining a pressure chamber with said valve member, a sensor, solenoid and battery mounted on said cover and connected for operation of said flush valve, a passage in said cover connecting said pressure chamber and outlet, operation of said solenoid opening said passage to relieve pressure in said chamber through said passage to said outlet whereby said valve moves off its seat to open communication between said inlet and outlet, and a stop within said pressure chamber attached to said valve member limiting movement thereof toward said cover to control the volume of water through said flush valve prior to closure of said valve member on said valve seat.
5 Assignments
0 Petitions
Accused Products
Abstract
A sensor-activated, battery-powered toilet room flush valve has a body with an inlet and an outlet. There is a valve seat in the body and a diaphragm which closes upon the seat to control flow between the inlet and the outlet. A cover mounted on the body defines a pressure chamber with the diaphragm and there are a sensor, solenoid and battery mounted on the cover and connected for operation of the flush valve. There is a passage in the cover connecting the pressure chamber and the outlet. Operation of the solenoid opens the passage to relieve pressure in the chamber to the outlet whereby the diaphragm moves off its seat to open communication between the inlet and outlet. A stop is positioned within the chamber and attached to the diaphragm to limit its movement toward the cover, which in turn controls the volume of water passing through the flush valve prior to closure of the diaphragm upon its valve seat. The stop is adjustable from the outlet side of the valve.
165 Citations
19 Claims
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1. A sensor-activated, battery-powered toilet room flush valve including a body having an inlet and an outlet, a valve seat between said inlet and outlet, a valve member in said body positioned to close upon said seat to control flow from said inlet to said outlet,
a cover mounted on said body and defining a pressure chamber with said valve member, a sensor, solenoid and battery mounted on said cover and connected for operation of said flush valve, a passage in said cover connecting said pressure chamber and outlet, operation of said solenoid opening said passage to relieve pressure in said chamber through said passage to said outlet whereby said valve moves off its seat to open communication between said inlet and outlet, and a stop within said pressure chamber attached to said valve member limiting movement thereof toward said cover to control the volume of water through said flush valve prior to closure of said valve member on said valve seat.
- 11. A toilet room flush valve including a body having an inlet and an outlet, a valve seat between said inlet and outlet, a diaphragm in said body positioned to close upon said seat to control flow from said inlet to said outlet, a cover mounted on said body and defining a pressure chamber with said diaphragm a bypass orifice in said diaphragm connecting said outlet and pressure chamber whereby the pressurization of said chamber maintains said diaphragm upon said seat, means responsive to activation of said flush valve, to vent said pressure chamber to said outlet whereby said diaphragm moves off said valve seat to open communication between said inlet and outlet, and a stop within said pressure chamber attached to said diaphragm limiting movement thereof toward said cover which controls the volume of water passing through said flush valve prior to closure of said diaphragm on said valve seat.
Specification