Dual-function fastener and method of use

Details Dual-function fastener and method of use Dual-function fastener and method of use

1994-10-28

1996-12-03

Wilson, Neill R.

Metal fusion bonding

Process

Plural diverse bonding

219 99, 2952505, 2952514, 411171, B23K 900, B23K 1104, F16B 3706

Patent

active

055799868

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.

REFERENCES:
patent: 3671710 (1972-06-01), Coombs
patent: 4261245 (1981-04-01), Mauer
patent: 4359813 (1982-11-01), Mauer
patent: 4850771 (1989-07-01), Hurd
patent: 5414234 (1995-05-01), Kito

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