Tube bending apparatus and method
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United States of America Patent
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Jan 9, 1996
Grant Date -
N/A
app pub date -
Dec 20, 1993
filing date -
Dec 20, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention provides an apparatus for the rotary draw bending of pipe and tube having means to apply an axial boost force to the trailing end of the tube during the bending operation, which force assists in controlling the flow of tube material into the bend. The apparatus has means to monitor the amount of material being used during each bending operation and means to control the amount of boost applied to the tube whereby the bending operation can be controlled to better achieve desired elongation characteristics. Bent tubes to a consistent standard and quality are obtained.
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