Calibrator for use in the manufacture of double walled thermoplastic pipe
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 26, 1985
Grant Date -
N/A
app pub date -
Mar 7, 1984
filing date -
May 27, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In an apparatus such as a corrugator for manufacturing thermoplastic pipe with a corrugated outer wall and a smooth inner wall, a calibrator is employed to provide a smoother inner wall and a more rapid inner wall cooling. The calibrator includes a tube wound into a helical coil and an adjustment mechanism for adjusting the coil diameter. A cooling fluid may be passed through the tube.
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Cited Art Landscape
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