Bulb rivet
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United States of America Patent
Stats
-
May 29, 1984
Grant Date -
N/A
app pub date -
Mar 12, 1981
filing date -
Mar 12, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A blind fastener, producing a large blind side bulb, and including a locking ring to hold the fastener in a secured position against stresses. A collapsible barrel segment is disposed on the blind side between the end of the body portion and the head of the pull stem to effect the expansion of the body portion on the blind side. The barrel resists collapsing under loads sufficient to expand and flare the body portion of the fastener to produce the desired large bulb but collapses upon satisfactory flaring having been accomplished. The collapsible barrel, being collapsible along an angle, makes the fastener particularly well-adapted for fastening non-parallel surfaces.
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