Coupling having angularly oriented key surfaces
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United States of America Patent
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Sep 18, 2012
Grant Date -
Jun 17, 2010
app pub date -
Feb 17, 2010
filing date -
Mar 26, 2004
priority date (Note) -
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Abstract
A mechanical pipe coupling is formed of segments attached end to end to surround a central space. Each segment has arcuate keys which project toward the central space. Each key is formed of a pair of side surfaces and a mid surface between them. The mid surface is angularly oriented relative to a longitudinal axis perpendicular to a plane containing the segments. When used to couple pipe elements having grooves the angular orientation of the mid surfaces provides flexibility to the joint. A method of joining pipe elements end to end is also disclosed.
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