Method of making pipe coupling joint
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United States of America Patent
Stats
-
Mar 24, 1981
Issued Date -
N/A
app pub date -
Aug 9, 1978
filing date -
Jul 26, 1976
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Disclosed is a pipe coupling joint comprising an interference fit coupling of unthreaded pipe sections. The end of the outer pipe in a telescoped interference fit coupling is radially compressed to form a groove in the inner pipe. The crimped end is compressed into the groove to securely couple the pipe sections together. Lined pipe joints and methods and apparatus for forming the improved interference fit joint are also disclosed.
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