Removable flush cap for a multi-diameter tube coupling

Details Removable flush cap for a multi-diameter tube coupling Removable flush cap for a multi-diameter tube coupling

2004-06-25

2008-09-02

Hewitt, James M (Department: 3679)

Pipe joints or couplings

Cap closures

C220S293000, C220S301000

Reexamination Certificate

active

07419194

ABSTRACT:
A removable flush cap designed for use with an irrigation tube coupling or fitting, to facilitate post-installation flushing of dirt and grit from an irrigation system. The flush cap is particularly designed for use with a tube coupling of the type shown in U.S. Pat. No. 6,988,747 B2, having a plurality of retainer collets each with multiple lock fingers oriented for push-in locked reception of a tube end in engagement with a compliant seal. The flush cap includes a generally cylindrical barrel for sealed slide-fit engagement with the compliant seal within one of the retainer collets, and a recessed groove for snap-fit locked reception of the collet lock fingers. The flush cap further includes a plurality of cams for engaging and releasing the collet lock fingers from the cap groove, upon cap rotation, to permit slide-out cap removal from the retainer collet.

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