Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Headed fastener element with nut – washer – securing means or cap – Securing means pivotable about axis transverse to fastener...
Patent
1979-01-26
1981-01-20
Britts, Ramon S.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Headed fastener element with nut, washer, securing means or cap
Securing means pivotable about axis transverse to fastener...
411 29, F16B 1308
Patent
active
042455456
ABSTRACT:
A toggle-bolt-like blind-end connector fastens sheet-metal panels to fiber-board ducts by passing through pre-bored holes in the metal panel and punching its own hole in the fiber-board by a sharply pointed conical head mounted on a barbed-ring shaft. An expandable spider is fixed at the base of the head and is held collapsed against the shaft by a short sleeve. The sleeve has an end flange to limit its following the head and spider through the hole punched in the fiber-board, thus allowing the spider to expand inside the duct, after which expansion the shaft is pulled outwardly to press the expanded spider against the inner surface of the fiber-board. Next a resilient-material nut having shaft-gripping barbed-rings in its bore is pushed onto the exposed end of the shaft to engage the sheet-metal panel. The barbed-rings on the shaft facilitate breaking-off the unneeded end of the shaft.
REFERENCES:
patent: 1159420 (1915-11-01), Rubly
patent: 2911859 (1959-11-01), Longley et al.
patent: 3001252 (1961-09-01), Erickson et al.
patent: 3238835 (1966-03-01), Rosenberg
patent: 3315558 (1967-04-01), Fischer
patent: 3316796 (1967-05-01), Young
patent: 3659449 (1972-05-01), Abernathy
patent: 3671061 (1972-06-01), Dawdy
patent: 3942240 (1976-03-01), Gebelius
patent: 3959853 (1976-06-01), Talan
patent: 4010788 (1977-03-01), Gompel
Britts Ramon S.
Staubly Ralph F.
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