Clamping clinch fastener
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United States of America Patent
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Aug 11, 2020
Grant Date -
Jan 12, 2017
app pub date -
Jul 6, 2016
filing date -
Jul 6, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
A clinch fastener with a single-element, unitary construction that does not require the preassembly of parts. The fastener provides a clamp load after installation and is fully formed by stamping the part from sheet metal. The fastener provides the necessary rigidity for a clinch attachment shank with the resilience of a head that will provide a residual clamp load to the attached panels. The fastener attaches two panels face-to-face by extending through aligned apertures in the panels. A shank undercut receives the cold flow of material from the second bottom panel while the panels are clamped against a resilient dome-shaped head of the fastener. The fastener may include a central axial well that receives the tip of a press punch during installation.
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