Method of forming chamfered spigot end on pipe

Details Method of forming chamfered spigot end on pipe Method of forming chamfered spigot end on pipe

1989-01-25

1992-03-17

Simmons, David A.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156278, 1563099, 156292, 156322, 264138, 138109, 138115, 285138, 285423, B31F 100, B29C 3702, F16L 918

Patent

active

050965280

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.

REFERENCES:
patent: 4390383 (1983-06-01), van Dongeren

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