Method of forming, mounting and using flush valves for flush tan

Details Method of forming, mounting and using flush valves for flush tan Method of forming, mounting and using flush valves for flush tan

1975-04-09

1977-01-11

Drummond, Douglas J.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

4 57R, 4 57P, 156309, B29C 1900, B32B 3100

Patent

active

040025217

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: 3154794 (1964-11-01), Antunez
patent: 3239848 (1966-03-01), Zrolka
patent: 3369259 (1968-02-01), Harold
patent: 3587117 (1971-06-01), Ward

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