Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Headed fastener element with nut – washer – securing means or cap – Metallic resilient securing means
Patent
1985-02-28
1986-11-11
Holko, Thomas J.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Headed fastener element with nut, washer, securing means or cap
Metallic resilient securing means
411533, 411999, F16B 2110
Patent
active
046219617
ABSTRACT:
A captive panel fastener includes three parts, a screw, a tapered bushing, and a slotted expandable sleeve. The bushing fits closely over the shank of the screw, and has an outwardly extending shoulder or flange at its lower end away from the head of the screw, to retain the expandable sleeve in the expanded condition. The slotted sleeve has a cylindrical upper flange which is generally co-extensive with the head of the screw, and has a lower flange which in the initial or relaxed condition is smaller than the panel hole through which the captive fastener is to be secured. Following insertion of the shank of the screw and the unstressed slotted sleeve into a hole in a panel where the fastener is to be secured, further pressure on the head of the fastener forces the sleeve into the bushing, expanding the lower end of the sleeve, so that its lower slotted flange grips around the lower edge of the panel.
REFERENCES:
patent: 1038834 (1912-09-01), Bloom
patent: 2592130 (1958-04-01), Erb
patent: 2796907 (1957-06-01), Dumas
patent: 3056852 (1962-10-01), Sachs
patent: 3076668 (1963-02-01), Famely
patent: 3126935 (1964-03-01), Tuozzo
patent: 3434746 (1969-03-01), Watts
patent: 4218954 (1980-08-01), Morel
patent: 4478532 (1984-10-01), Puro
patent: 4494347 (1985-01-01), Uhlig
DeFranco Carl M.
Holko Thomas J.
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