Action piercing fastener

Details Action piercing fastener Action piercing fastener

1977-08-15

1978-11-07

Foss, J. Franklin

Metal working

Means to assemble or disassemble

Means to drive self-piercing work part

151 37, 151 4173, 206338, F16B 3934

Patent

active

041240502

ABSTRACT:
A self-piercing fastener which locks itself to the metal panel upon which it is mounted for self-swaging its piercing portion to form automatic back taper thereof and by coining the margins of the pierced opening, the panel being disposed against a flat-top anvil having an opening therein providing clearance for discharge of the slug punched from the mounting material, and a method for securing self-piercing fasteners to a flat sheet metal panel.

REFERENCES:
patent: 2327656 (1943-08-01), Meek
patent: 2561638 (1951-07-01), Richardson
patent: 2749606 (1956-06-01), Donahue
patent: 2861617 (1958-11-01), Tinnerman
patent: 3152628 (1964-10-01), Strain et al.
patent: 3187796 (1965-06-01), Double
patent: 3722670 (1973-03-01), Plunkett
patent: 3724520 (1973-08-01), Ladouceur et al.
patent: 3747657 (1973-07-01), Ryder
patent: 3845860 (1974-11-01), Ladouceur et al.
patent: 3851759 (1974-12-01), Young et al.

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