Apparatus and method for producing structures with multiple undercut stems
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United States of America Patent
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Jul 9, 2013
Grant Date -
May 26, 2011
app pub date -
Nov 5, 2010
filing date -
Oct 19, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
A method is disclosed for producing structures having a plurality of stems extending away from a fenestrated base to undercut islands projecting over fenestrations in the base. Such structures include slidingly-engaging fastener portions, self-engaging fasteners, uni-directional stepped fasteners, fastening segments integral with larger product components, and other structures with similar aspects. The method includes providing a set of partially bypassing dies to define a fenestrated common cavity contiguous with pluralities of undercut stem chambers and a terminal chamber, filling the cavity with a ductile moldable material, engaging the dies, and releasing the resultant product.
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