System and method for corrugating spiral formed pipe
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United States of America Patent
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-
Feb 27, 2001
Grant Date -
N/A
app pub date -
Nov 5, 1999
filing date -
Nov 5, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and apparatus for forming corrugated pipe is disclosed. The pipe forming apparatus includes a selectively operable corrugation module having an inner corrugation roller movably mounted relative to an outer corrugation roller via a cylinder assembly. The method includes forming a length of spiral pipe without corrugations, engaging a corrugation module to introduce a desired length of corrugated pipe, and retracting the corrugation unit to allow a second length of uncorrugated pipe to form. The uncorrugated portion of the pipe is then severed cleanly using overlapping inner and outer cutting knives.
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