Collapsible Mandrel Tools and Associated Methods for Fabrication of Wound Composite Articles
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United States of America Patent
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Issued Date -
Aug 1, 2013
app pub date -
Oct 22, 2012
filing date -
Aug 15, 2008
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Abandoned
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Abstract
Mandrels of various configuration, and action, including collapsible mandrels, to be used in forming composite articles with preselected three dimensional shapes and construction are disclosed and described. In one aspect, such a mandrel may have a plurality of discrete segments coupled about a longitudinal axis and collectively forming an enclosure with a substantially continuous exterior working surface. The working surface can have a network of intersecting grooves formed therein, and such grooves can cooperatively establish a substantially continuous interconnected lattice corresponding to the three dimensional geometric configuration to be imparted to a composite article formed. The mandrel may optionally include a removable core assembly to aid in collapse of the mandrel.
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