Pipe plug and method

Pipes and tubular conduits – With closures and plugs – Inflatable

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Details

138 89, 138 90, F16L 5512

Patent

active

057719373

ABSTRACT:
A device for plugging a pipe includes a resilient, hollow body member that expands with the application of internally applied pressure to block the pipe. The body member has at one end a conical shaped wall with an apex that points inward. At ambient pressure, the diameter of the body member is less than the diameter of the pipe into which it is inserted. The diameter of the body member increases as the internal pressure increases, and the length of the conical shaped wall decreases.

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