Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – With hole forming means
Patent
1979-07-10
1981-10-06
Bonck, Rodney H.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having separate expander means
With hole forming means
411 34, 411 43, F16B 1306, E04B 149
Patent
active
042932580
ABSTRACT:
A self drilling, closed end, blind rivet has a hexagonally shaped flange, or other suitably shaped means of driving, at one end and a hardened drill bit at the other end, with the two being joined by an integral sleeve wall with a rolled groove in it that forms an internal chamber to retain the head of a mandrel. Withdrawal load on the mandrel, after the rivet has been inserted through a hole drilled by it in a plurality of layers to be joined, will upset the sleeve wall into a folded flange that coacts with the hex head, or other driving means, to tightly grip the outside face and the blind face of the layers being joined.
REFERENCES:
patent: 1022135 (1912-04-01), Heinkel et al.
patent: 3199381 (1965-08-01), Mackey
patent: 3385156 (1968-05-01), Polos
patent: 3403593 (1968-10-01), Moore
patent: 3438301 (1969-04-01), Mattioli
patent: 3463046 (1969-08-01), Welch et al.
patent: 3487745 (1970-01-01), Brunelle
patent: 3534419 (1970-10-01), Deans et al.
patent: 3750518 (1973-08-01), Rayburn
patent: 4085337 (1978-04-01), Moeller
Bonck Rodney H.
Microdot Inc.
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