Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Impact driven fastener – e.g. – nail – spike – tack – etc. – Including integral locking means
Patent
1990-08-10
1991-09-17
Lindsey, Rodney M.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Impact driven fastener, e.g., nail, spike, tack, etc.
Including integral locking means
411913, F16B 1500
Patent
active
050490184
ABSTRACT:
A fastener having a head portion, a shaft portion, and a hook portion which secures the fastener within a substrate. The hook portion may have a plurality of serrations on a surface thereof for gripping a substrate. The hook may be of a material having a memory such that, when the hook is compressed during the insertion of the fastener in a hole in a substrate, the hook will expand against the walls of the hole in a desire to return to its original shape. Such a fastener may be easily inserted into the hole, but considerable force is required to remove the fastener from the hole after insertion. The fastener thus can be inserted easily through soft materials overlying a hard substrate without damaging them while providing an effective anchoring force within the substrate in effectively fastening materials to a substrate.
REFERENCES:
patent: 623427 (1899-04-01), Richards et al.
patent: 1417818 (1922-05-01), Frost
patent: 1519502 (1924-12-01), Nalle
patent: 1574790 (1926-03-01), Carroll
patent: 1798273 (1931-03-01), Pleister
patent: 2006813 (1935-07-01), Norwood
patent: 2222338 (1940-11-01), Roberts
patent: 2501701 (1950-03-01), Tinnerman
patent: 3093874 (1963-06-01), Rapata
patent: 3204265 (1965-09-01), Fiekers et al.
patent: 3596940 (1952-05-01), Poupitch
patent: 3959853 (1976-06-01), Talan
patent: 4014244 (1977-03-01), Larson
Engineered Construction Components
Lillie Raymond J.
Lindsey Rodney M.
Olstein Elliot M.
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