Flush valve/flush tube connection

Baths – closets – sinks – and spittoons – Dry closets – With heating meas

Patent

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Details

285340, 285348, 285354, E03C 100

Patent

active

047776692

ABSTRACT:
A connection between the outlet of a flush valve and a flush tube includes an outlet fitting for the flush valve having an exterior thread thereon and a flush tube which extends within the outlet fitting. A coupling nut having an interior threaded area for attachment to the fitting also has an inwardly-directed annular shoulder which extends closely adjacent the flush tube and with the end of the fitting, defines an annular chamber. Positioned within the annular chamber is an annular elastomeric gasket in contact with an end of the fitting and in peripheral contact with the flush tube. A back-up ring is positioned within the chamber for circumferential contact with the gasket and a clip ring is positioned within the chamber between the back-up ring and the coupling nut shoulder and is adapted for surface penetration engagement with the exterior of the flush tube. As the interiorly threaded coupling nut is advanced on the exteriorly threaded fitting, the size of the chamber is reduced and the gasket and back-up ring move the clip ring into surface penetration of the flush tube to secure the flush tube to the fitting. The gasket is distorted into sealing contact with the flush tube, back-up ring, fitting and the interior of the coupling nut.

REFERENCES:
patent: 1928821 (1933-10-01), Santiago
patent: 3058760 (1962-10-01), Bankowski
patent: 3273919 (1966-09-01), Billeter et al.
patent: 3540065 (1970-11-01), Gidner et al.
patent: 3583003 (1971-06-01), Thompson
patent: 3879065 (1975-04-01), Kobayashi
patent: 3963298 (1976-06-01), Seiler
patent: 4084843 (1978-04-01), Gassert
patent: 4146254 (1979-03-01), Turner et al.
patent: 4516278 (1985-05-01), Lamond
patent: 4593943 (1986-06-01), Hama et al.

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