Filter for diaphragm-type flush valve
First Claim
1. A diaphragm-type of flush valve for use with toilet devices such as urinals and water closets, including a body having an inlet and an outlet, a valve seat between said inlet and outlet, and a valve member movable to a closing position on said valve seat to control water flow between said inlet and outlet, said valve member including a diaphragm peripherally attached to said body, a pressure chamber above said diaphragm with water therein holding said valve member on said valve seat,an annular filter attached to the underside of said diaphragm at spaced locations on said diaphragm, a bypass orifice in said filter positioned at one of said spaced locations and in communication with said pressure chamber, said filter including a body having a plurality of peripherally spaced grooves, and a filter ring mounted on said filter body and facing said grooves, said filter ring and grooves forming a plurality of filter passages in communication with said valve body inlet and said bypass orifice.
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Accused Products
Abstract
A diaphragm-type flush valve for use with toilet devices such as urinals and water closets includes a body having an inlet and an outlet. There is a valve seat between the inlet and outlet and a valve member movable to a closing position on the valve seat to control water flow through the flush valve. The valve member includes a diaphragm peripherally attached to the body and there is a pressure chamber above the diaphragm with water therein holding the valve member on said valve seat. An annular filter body is attached to the underside of the diaphragm at spaced locations thereon and there is a bypass orifice in the filter body positioned at one of the spaced locations. The filter body includes a plurality of peripherally spaced grooves and there is a filter ring mounted on the filter body and facing the grooves. The filter ring and grooves form a plurality of filter passages in communication with the bypass orifice and the flush valve inlet.
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Citations
20 Claims
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1. A diaphragm-type of flush valve for use with toilet devices such as urinals and water closets, including a body having an inlet and an outlet, a valve seat between said inlet and outlet, and a valve member movable to a closing position on said valve seat to control water flow between said inlet and outlet, said valve member including a diaphragm peripherally attached to said body, a pressure chamber above said diaphragm with water therein holding said valve member on said valve seat,
an annular filter attached to the underside of said diaphragm at spaced locations on said diaphragm, a bypass orifice in said filter positioned at one of said spaced locations and in communication with said pressure chamber, said filter including a body having a plurality of peripherally spaced grooves, and a filter ring mounted on said filter body and facing said grooves, said filter ring and grooves forming a plurality of filter passages in communication with said valve body inlet and said bypass orifice.
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10. A valve member assembly for use in a toilet device flush valve having a valve body and an inlet and an outlet therefor, the flush valve having a seat to close communication between the inlet and the outlet, said valve member assembly being formed and adapted to close upon said seat, a flush valve pressure chamber in said flush valve above said valve member assembly and normally closing said valve member assembly on said valve seat,
said valve member assembly including a diaphragm, an annular filter body attached to the underside of said diaphragm at spaced locations on said diaphragm, a bypass orifice in said filter body positioned at one of said spaced locations, said filter body including a plurality of peripherally spaced grooves, and a filter ring mounted on said filter body and facing said grooves, said filter ring and grooves forming a plurality of filter passages in communication with said bypass orifice and said flush valve inlet.
- 19. A filter for use as a filter and bypass orifice in a diaphragm toilet flush valve, said filter including an annular filter body adapted to be attached to the underside of a diaphragm at spaced locations thereon, a bypass orifice in said filter body positioned at one of the spaced attachment locations, said filter body including a plurality of peripherally spaced grooves, and a filter ring attached to said filter body by a plurality of frangible tabs, said filter ring being positioned coaxially of said filter body, and being movable to a position in alignment with said filter body grooves, upon fracturing of said frangible tabs.
Specification