Apparatus and method for producing structures with multiple undercut stems
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United States of America Patent
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Nov 9, 2010
Grant Date -
Jan 24, 2008
app pub date -
Jul 16, 2007
filing date -
Oct 19, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method is disclosed for producing structures having a plurality of stems extending away from a fenestrated base to undercut ends. Such structures include slidingly-engaging fastener portions, hook-and-loop hook portions, self-engaging fastener portions, 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, filling the cavity with a moldable material, and ejecting the resultant product. The resultant product includes a plurality of undercut stems spaced away from a base with undersides projecting over fenestrations in the base.
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