Heat form coiling device
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United States of America Patent
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May 4, 2010
Grant Date -
Nov 29, 2007
app pub date -
Oct 1, 2004
filing date -
Oct 1, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method and apparatus for continuously producing preselected lengths of coiled tubing are disclosed. According to the method, plastic tubing is continuously wound onto a rotating main tube shaft (24). Downstream from the point where the tubing begins to wind about the shaft, a heat source (46) is directed toward the coiled tubing, softening it as it traverses thereby. Further downstream, a cool-air source (48) directed at the softened tubing sets the tubing into its coiled form. Subsequently, the coiled tubing is cut into preselected lengths by a cutter (50) downstream from the cool-air source.
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