Drip stop plug

Pipes and tubular conduits – With closures and plugs – Inflation stem type

Patent

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Details

138 91, F16L 5510

Patent

active

053180755

ABSTRACT:
A water soluble drip stop plug for stopping water flow in a pipe and for dissolving after a predetermined time after water flow is restored. The plug is a cup shaped water soluble plug which has tapered sides to fit snugly into the inside diameter of pipes. The end wall of the plug is designed to dissolve in a predetermined time after contact with fluids. The end wall of the plug has a different wall thickness than the side wall of the plug. A preferred embodiment has an end wall with a portion of reduced wall thickness which allows it to break away quicker than the remainder of the end wall. Additionally, the drip stop plug may have reinforced side walls to provide support for plugs of larger diameter.

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patent: 5186214 (1993-02-01), Savard

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