Positive seal coupling system
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United States of America Patent
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Apr 12, 2016
Grant Date -
Feb 26, 2015
app pub date -
Oct 15, 2014
filing date -
Apr 18, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A hollow coupling for joining together two pipe ends and having a center, two coupling ends, and an inner profile. The inner profile can include a serrated section having a plurality of threads extending radially around the inner diameter of the coupling, a curved section proximate the serrated section and defining a recess for the deposition of debris and other material during installation of a pipe into the coupling, a smooth section adjacent an end of the coupling and having a diameter slightly less than the outside diameter of a pipe to be inserted into the coupling, and a transition section between the curved section and the smooth section, the transition section having a smooth, rounded profile that minimizes stress concentrations.
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Cited Art Landscape
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