Apparatus for testing or isolating a segment of pipe
AssigneeUnited Testing Corp.
InventorHorst Gotowik
Life of this patent
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Abstract
There is described a method and an apparatus for testing or isolating a section of pipe, the apparatus comprising a cylindrical mandrel for insertion into a section of pipe, the mandrel including at least one portion of progressively increasing diameter, and at least one seal disposed around the mandrel and actuatable in response to applied fluid pressure to move along the increasing diameter portion of the mandrel, causing the seal member to radially expand into sealing contact with an inner surface of the pipe.
Claims10
A resilient seal member for sealing against the inner surface of a tubular member to contain fluid pressure, said seal member comprising a first portion normally smaller in outer diameter than the inner diameter of said tubular member and being radially expandable into sealing contact with said inner surface in response to the action of said fluid pressure, and a second portion extending from said first portion at an angle thereto towards said inner surface.
Dependencies are inferred from the claim text.