Valve seat of a flush valve used in flush tanks and the like

Details Valve seat of a flush valve used in flush tanks and the like Valve seat of a flush valve used in flush tanks and the like

1975-10-23

1977-06-14

Artis, Henry K.

Baths, closets, sinks, and spittoons

Tubs

Particular construction or configuration details

4 57P, 4 57R, E03D 114, E03D 134, E03D 312

Patent

active

040287483

ABSTRACT:
A valve seat of an integrated valve seat and closure member assembly is secured by waterproof sealant over the upper end of a flush valve seat portion in a flush tank, the waterproof sealant preferably constituting the sole support for the integrated assembly in the flush tank. The closure member is hingedly connected to the valve seat through a rigid frame which is partially removably telescoped by a resilient material closure portion thereby mounting the closure portion of the closure member hingedly movable downwardly toward and upwardly away from a sealing position with the valve seat. An outwardly depending C-shaped leg on the closure portion of the closure member which inwardly telescopes the closure member frame provides a lower, relatively flat, sealing surface for sealing downwardly against the valve seat in the closure member sealing position. The valve seat preferably has two, upwardly projecting, convex, concentric rings against which the closure member flat resilient sealing surface seals in the closure member sealing position, one of said valve seat convex rings providing initial sealing until the closure member is permanently compressed and then both rings providing the sealing thereafter.

REFERENCES:
patent: 1570681 (1926-01-01), Kirkham
patent: 1624234 (1927-04-01), Hale
patent: 2557743 (1951-06-01), Howe
patent: 2908018 (1959-10-01), Petrie
patent: 2990555 (1961-07-01), Stowe
patent: 2992806 (1961-07-01), Kanter et al.
patent: 3154794 (1964-11-01), Antunez, Jr.
patent: 3167787 (1965-02-01), Connealy
patent: 3239848 (1966-03-01), Zrolka
patent: 3369259 (1968-02-01), Harold
patent: 3702012 (1972-11-01), Bennett
patent: 3707733 (1973-01-01), Gore et al.
patent: 3733618 (1973-05-01), Wiegand

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