Flush valve structure for a toilet tank

Details Flush valve structure for a toilet tank Flush valve structure for a toilet tank

2011-01-11

2011-01-11

Fetsuga, Robert M (Department: 3751)

Baths, closets, sinks, and spittoons

Flush closet

Manual selection of the amount of flush

C004S391000, C004S399000, C004S403000

Reexamination Certificate

active

07865979

ABSTRACT:
A toilet tank flush valve structure includes a valve base for installation in the outlet hole formed in the floor of a toilet tank and defining a water outflow passage and including a first valve member at the upper end of the water outflow passage. A float assembly is movable relative to the valve base between a sealing position in which a second valve member at a lower end of the float assembly engages the first valve member in sealing relationship and a flushing position in which the second valve member is spaced upwardly from the first valve member. The float assembly includes an outer shell that is open downwards and has a lower edge at which the shell is provided with the second valve member, and a closure member within the outer shell and cooperating with the outer shell to define a float chamber. The closure member is adjustable in position relative to the outer shell, whereby the float chamber is adjustable in volume.

REFERENCES:
patent: 413590 (1889-10-01), White
patent: 1069658 (1913-08-01), Drew
patent: 1450133 (1923-03-01), Cahill
patent: 3172129 (1965-03-01), Fulton et al.
patent: 4604763 (1986-08-01), Sprang

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