Automatic cut-off valve

Details Automatic cut-off valve Automatic cut-off valve

2005-01-13

2008-12-16

Nguyen, Tuan N (Department: 3751)

Baths, closets, sinks, and spittoons

Flush closet

Tank only

C137S426000

Reexamination Certificate

active

07464415

ABSTRACT:
A supplemental fill valve for use in a toilet tank, to work in conjunction with a flapper and a typical fill valve having a float cup and a valve body, includes a supplemental float cup forming a recess and at least one opening in the bottom thereof, a vertical member installed through the recess, on which the supplemental float cup freely moves up and down, and a coil spring placed between the top of the vertical member and the top inside of the supplemental float cup. A lifting member extending from the supplemental float cup to the float cup, preferably under the float cup, lifts the float cup. An alternative supplemental fill valve includes a weighted supplemental float cup, and a lifting cam activated by the weighted supplemental float cup, extending from the supplemental float cup to the float cup for lifting the float cup, wherein when water flows out of the tank, the weighted float cup activates the cam, lifting the float cup. The weighted supplemental float cup rides up and down in a guide, which is affixed to the side of the main valve body.

REFERENCES:
patent: 3727243 (1973-04-01), Biniores
patent: 5230104 (1993-07-01), Ocampo
patent: 5878775 (1999-03-01), Tamburro, Jr.

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