Fastener nut for hydroformed parts

Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Threaded fastener locked to a discreet structure – Nut – and means to engage substructure on its opposite faces...

Reexamination Certificate

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Details

C411S181000, C411S349000, C411S340000, C411S029000

Reexamination Certificate

active

11167996

ABSTRACT:
A fastener nut for hydroformed parts comprises a nut body for receiving a threaded fastener and a locking ring with depending fingers that is received on the nut body. The nut body is adapted to pierce and then form a collar thereabout in a hydroformed part while the part remains in a die cavity under hydroforming pressure. The nut body and the collar formed thereby have a configuration that prevents turning of the locking ring while permitting turning of the nut body relative to the locking ring on full insertion of the nut in the collar, and a cam surface on the nut body that on partial turning of the nut body then forces the locking ring into locking engagement with the collar to thereby attach the fastener nut to the hydroformed part.

REFERENCES:
patent: 2415695 (1947-02-01), Cann
patent: 2796907 (1957-06-01), Dumas
patent: 3276499 (1966-10-01), Reusser
patent: 3279303 (1966-10-01), Shackelford et al.
patent: 3465637 (1969-09-01), Cushman et al.
patent: 3683740 (1972-08-01), Martin
patent: 5149235 (1992-09-01), Ollis
patent: 5183357 (1993-02-01), Palm
patent: 6146076 (2000-11-01), Bodin
patent: 6325580 (2001-12-01), Diamond
patent: 6357718 (2002-03-01), Crowell et al.

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