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...
Patent
1987-08-24
1989-02-07
Moon, Charlie T.
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...
29512, 411501, F16B 3704
Patent
active
048028037
ABSTRACT:
A riveting or self-fastening element such as a stud for permanent attachment to a panel preferably having a preformed panel opening, including the method of attachment and the panel assembly. The self-attaching element includes an annular barrel portion having a conical external surface which is press fitted in the panel opening to deform the panel opening and form a mating conical internal surface preventing further penetration of the fastening element into the panel. The free end of the barrel portion, which is preferably cylindrical, is simultaneously deformed outwardly in a die member having an annular die cavity, forming an annular rim which is U or hook-shaped in cross section, wherein the free end is biased against the panel preventing pull-out of the fastening element. The fastening element, method of attachment and panel assembly is particularly adapted for relatively thick metal panels, including panels having a thickness greater than 0.1 inches.
REFERENCES:
patent: 2005087 (1935-06-01), Kamack
patent: 2026757 (1936-01-01), Swanstrom
patent: 2260149 (1941-10-01), Meek
patent: 3399705 (1968-09-01), Breed et al.
patent: 3432925 (1969-03-01), Woolley
patent: 3754731 (1973-08-01), Mackal et al.
patent: 3938239 (1976-02-01), Lauth
patent: 4018257 (1977-04-01), Jack
patent: 4430034 (1984-02-01), Fujikawa
patent: 4490904 (1985-01-01), Moyher
Moon Charlie T.
Multifastener Corporation
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