Method of forming chamfered spigot end on pipe
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United States of America Patent
Stats
-
Mar 17, 1992
Grant Date -
N/A
app pub date -
Jan 25, 1989
filing date -
Jan 25, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method of forming a chamfered and sealed end on a spiral wound plastic pipe of the type including at least a pair of radially spaced circumferential side walls connected by an intermediate wall which joins generally radially between the side walls and extends in a helical path axially of the pipe. The method includes determining the desired axial length of the chamfer and removing the intermediate wall which lies between the side walls axially inwardly of the end of the pipe a distance substantially equal to the desired length to define an outwardly open channel between the side walls. Thereafter one of the side walls is permanently deflected to bring it substantially into engagement with the end of the other of the side walls circumferentially about the pipe to thereby form a chamfer on the end of the pipe.
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Cited Art Landscape
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