Pipe joints or couplings – Particular interface
Patent
1997-01-17
1998-08-11
Arola, Dave W.
Pipe joints or couplings
Particular interface
285105, 285179, 285323, 285351, 285371, F16L 2500
Patent
active
057916985
ABSTRACT:
A coupling for securing a plastic pipe. The coupling has a rigid hollow coupling shell with a passageway through it. A rigid stiffener tube is positioned internally of the shell, the stiffener tube having an external diameter slightly less than the internal diameter of the pipe. The stiffener tube has an external circumferential groove spaced from its outer end. A toroidal elastomeric seal is positioned within the stiffener tube circumferential groove. When a pipe end portion is inserted into the coupler shell, the stiffener tube extends telescopically within the interior of the pipe end portion and the seal engages the interior of the pipe to seal the interior of the pipe to the interior of the stiffener tube. A rigid gripper positioned within the coupler shell engages the exterior surface of the pipe and prevents the pipe from being extracted from the coupler shell.
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Wartluft Donald W.
Wood Timothy F.
Arola Dave W.
Continental Industries, Inc.
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