Flush relief valve having floatable sleeve member
OwnerWilton J. Pinoinventor
Life of this patent
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Abstract
Apparatus for delaying initiation of a successive flush cycle in a plumbing system utilizing a diaphragm flush valve having a relief valve assembly provided with a buoyant relief valve sleeve member that can rise in water trapped in the relief valve assembly to a position that prevents operative contact by the flush valve plunger pin.
Claims19
An improved method for operation of a diaphragm flush valve utilized in a plumbing system, the improvement to which comprises:
- (a) causing the relief valve sleeve member to be positioned in non-operative contact with the flush valve plunger pin after the relief valve has been unseated, and
- (b) retaining said sleeve member in a position of non-operative contact for a predetermined period of time at least one second greater than the time for said sleeve member to travel to said position under free fall conditions.
A relief valve for use in a diaphragm flush valve, the improvement to which comprises the relief valve stem, the relief valve sleeve member, or a combination thereof, constructed to require the time for said sleeve member to travel from a first position wherein said sleeve member is out of operative contact with the diaphragm flush valve plunger pin to a second position wherein said sleeve member can be operatively engaged by said plunger pin to be at least one second greater than the time for said sleeve member to travel from said first position to said second position in free fall.
In a relief valve for use in a diaphragm flush valve contained in a fluid flow control plumbing fixture having a vacuum breaker assembly, wherein the plumbing fixture is constructed to permit at least a portion of any fluid trapped in the outlet chamber of the diaphragm flush valve by the vacuum breaker assembly to drain therefrom when the relief valve is seated, the improvement to which comprises the sleeve member of the relief valve being constructed to have a density that requires the time for said sleeve member to travel from a first position wherein said sleeve member is out of operative contact with the diaphragm flush valve plunger pin to a second position wherein said sleeve member can be operatively engaged by said plunger pin to be at least one second greater than the time for said sleeve member to travel from said first position to said second position in free fall.
Dependencies are inferred from the claim text.