Cold-headed standoff
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Sep 9, 2008
Grant Date -
Jan 4, 2007
app pub date -
Aug 15, 2006
filing date -
Mar 18, 2003
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A process for cold forging a metal fastener such as a self-clinching standoff includes a punch and die set at the final head trimming station which produces the shear burr only on the underside of the fastener head where it is not visible after installation. A knock-out pin which is reciprocal within the bore of the punch forcibly ejects the fastener through a passage in the die to a point beyond an opposite side of the die. A stripper sleeve which is reciprocal about the outside surface of the punch then moves from a retracted position over the end of the punch pushing a residual scrap ring from around the outside of the punch.
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