Dual-function fastener and method of use
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United States of America Patent
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Dec 3, 1996
Grant Date -
N/A
app pub date -
Oct 28, 1994
filing date -
Oct 29, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pin-type fastener capable of dual-function includes a pin which can be used in fastening workpieces together. The pin has a pintail capable of being removed from the remainder of the pin after the pin has been installed as a fastener in a workpiece, and the pintail can then be used as a weldstud and welded to the same workpiece as the pin-type fastener, or to another workpiece. The pin-type fastener can be a two-part fastener, for example a lockbolt including a nut or swageable collar engageable with the pin. The pin may have a breakneck to facilitate removal of the pintail. The pin itself may be a weldstud. In use, the pin-type fastener is installed in a workpiece and the pintail is removed, and then the pintail is used as a weldstud, being welded to a workpiece. Electric welding is employed. The advantage of the fastener is in economy through second use of the pintail as a stud.
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