Overflow vent scoop for flush valve

Patent metadata

Field	Value
Publication number	US-10494801-B2
Application number	US-201815892220-A
Country	US
Kind code	B2
Filing date	Feb 8, 2018
Priority date	Feb 15, 2013
Publication date	Dec 3, 2019
Grant date	Dec 3, 2019

Abstract

A vent cover which may be used with various flush valve assemblies, particularly those acceptable for high efficiency and high performance toilets, which vent cover has a vent cover wall, a curved exterior surface, and an interior surface defining a vent cover passage for fluid passing upwardly from the vent cover inlet opening. The vent cover has at last one projection extending outwardly from the exterior surface, the at least one projection configured to engage a feature of a valve body of the flush valve.

First claim

We claim:

1. A vent cover for use with a flush valve assembly, the vent cover comprising:
a vent cover wall having:
a curved exterior surface;
an interior surface, the interior surface defining a vent cover passage for fluid passing upwardly from a vent cover inlet opening; and

at least one projection extending outwardly from the exterior surface, the at least one projection configured to engage a feature of a valve body of the flush valve.

2. The vent cover of claim 1 , wherein the at least one projection extends outwardly from an arcuately curved upper portion of the exterior surface.

3. The vent cover of claim 1 , wherein the at least one projection has hook on an end of the at least one projection.

4. The vent cover of claim 1 , wherein the vent cover wall has an outer edge along an upper portion and a body portion of the vent cover wall, and an upper portion of the vent cover wall is arcuately curved such that a radius of the vent cover wall decreases along the upper portion of the vent cover wall from the body portion of the vent cover wall towards the edge of the upper portion of the vent cover wall.

5. The vent cover of claim 4 , wherein the outer edge of the vent cover wall is configured to meet an interior surface of the valve body of the flush valve in facing engagement when the vent cover is installed in a flush valve.

6. The vent cover of claim 1 , wherein a body portion of the vent cover wall is tapered to conform to a tapered valve body and a radius of the vent cover wall decreases from an upper portion to a lower portion of the vent cover wall.

7. A flush valve assembly, comprising:
a flush valve body having an upper inlet end having an inlet opening therethrough for receiving fluid into the flush valve body, a lower outlet end having an outlet opening therethrough for allowing fluid to exit the flush valve body, and a valve body wall extending between the upper inlet end and the lower outlet end and having an interior surface defining a flow path that extends generally longitudinally through the valve body from the inlet opening to the outlet opening;
a valve body cover capable of opening and closing over the inlet opening of the valve body;
an overflow tube, having an inlet opening in communication with the flow path of the valve body and an outlet opening for releasing air and/or fluid from within the valve body; and
a vent cover having a vent cover wall, wherein the vent cover wall has a curved exterior surface, an interior surface defining a vent cover passage for receiving fluid from the inlet opening of the vent cover, and at least one projection extending outwardly from the exterior surface, the at least one projection configured to engage a feature of the valve body of the flush valve.

8. The flush valve assembly of claim 7 , further comprising a poppet cover coaxially and slidably mounted with respect to the valve body through the feature.

9. The flush valve assembly of claim 8 , wherein the feature is web and wherein a guide rod of the poppet cover extends through a hole in the web.

10. The flush valve assembly of claim 7 , wherein the vent cover is configured to allow fluid entering the vent cover from a vent cover inlet opening to pass upwardly through the vent cover passage and to exit the vent cover through the inlet opening of the overflow tube.

11. The flush valve assembly of claim 7 , wherein at least a portion of the interior surface of the valve body wall is downwardly linearly tapered and has a decreasing valve body diameter as measured transversely across the valve body.

12. The flush valve assembly of claim 7 , wherein the valve body wall comprises an upper inlet section, a base section for attaching to a toilet tank floor, and an extension section situated between the inlet section and the base section and wherein at least one of an interior surface of the base section and of the extension section is tapered so as to have a linearly decreasing diameter from an upper end of each section in a direction toward a lower end of each section, wherein the diameters are measured transversely across each section.

13. The flush valve assembly of claim 7 , wherein the vent cover wall is curved and has a body portion below an upper portion of the vent cover wall and above the lower portion of the vent cover wall and a vent cover inlet opening, the vent cover wall has a generally semi-circular configuration in transverse cross-section and has a radius measured in a transverse direction across the vent cover such that the vent cover passage within the body portion of the vent cover wall also has a generally semi-circular cross-sectional configuration.

14. The flush valve assembly of claim 13 , wherein at least a portion of the interior surface of the valve body is tapered and the body portion of the vent cover wall has an outer edge which is also tapered to conform to the interior surface of the valve body and the radius of the vent cover decreases from the upper portion to the lower portion of the vent cover wall.

15. The flush valve assembly of claim 13 , wherein the upper portion of vent cover wall is further arcuately configured to curve towards the interior surface of the valve body and wherein the radius of the vent cover wall measured transversely across the vent cover decreases along the upper portion of the vent cover wall as the vent cover wall approaches the interior surface of the valve body.

16. The flush valve assembly of claim 13 , wherein the vent cover wall has an outer edge along the body portion and the upper portion of the vent cover wall, and the outer edge is configured for meeting the interior surface of the valve body in facing engagement.

17. The flush valve assembly of claim 7 , wherein the at least one projection extends outwardly from an arcuately curved upper portion of the exterior surface.

18. The flush valve assembly of claim 7 , wherein the at least one projection has hook on an end of the at least one projection.

Assignees

• As America Inc

Inventors

• Grover David
• Bucher Christophe
• Salahi Sara

Classifications

• E03D1/34 Primary

  Flushing valves for outlets; Arrangement of outlet valves · CPC title

• E03D9/04

  Special arrangement or operation of ventilating devices (ventilating rooms in general F24F) · CPC title