Swage type fastener with low swage load
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United States of America Patent
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-
Dec 4, 2001
Grant Date -
N/A
app pub date -
Jul 6, 2000
filing date -
Jul 6, 2000
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A two piece fastener system for including a pin member and a collar having an optimized strength with the materials of the pin member and collar having a predetermined shear strength ratio; the collar has a preselected excess volume to provide a desired `overpacking` condition and is of a size whereby after swage it will define a minimum wall thickness; the collar has an outer surface with a contour which in combination with a preselected excess volume results in a reduction in load required to swage the collar and with a pull type fastener providing a breakneck groove of reduced strength whereby severance of the pintail will occur at a reduced load resulting in a reduction in shock or ghost load applied to workpieces including those of a plastic or composite material.
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