Method and appraratus for forming a helical tube bundle
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United States of America Patent
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Dec 13, 2016
Grant Date -
Mar 24, 2016
app pub date -
Sep 23, 2014
filing date -
Sep 23, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
Apparatus and method for forming a plurality of elongate members into a helical bundle in which a pair of bending die assemblies are mounted on a moveable carriage, the moveable carriage itself being supported by a frame. The bending dies each have a plurality of grooved rollers that engage the sides of the tubes to apply a bending force while allowing the tubes to move longitudinally through the die assemblies. The die assemblies can be rotated independent of each other or in unison by means of stepper motors. A collet, attached to the frame, holds the ends of the tubes during the bending operation.
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