Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Impact driven fastener – e.g. – nail – spike – tack – etc. – Plural attached fasteners
Patent
1991-07-22
1992-09-01
Lindsey, Rodney M.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Impact driven fastener, e.g., nail, spike, tack, etc.
Plural attached fasteners
411443, 411452, 411488, 206343, F16B 1508
Patent
active
051435012
ABSTRACT:
A nail containing a predetermined unit weight of metal equivalent to a cylindrical nail having a predetermined diameter and having a shank of regular shape, a point at one end, at least two reduced portions formed in the shank longitudinally parallel to the central axis of the shank, having cross section reduced with respect to such a diameter, and a like plurality of ridges formed between the grooves, planar surfaces lying in planes parallel to one another, and, a head on one end of the nail, and at least two of ridges having ridge crests spaced apart a distance greater than the diameter of the equivalent cylindrical nail.
REFERENCES:
patent: 1360344 (1920-11-01), Wood et al.
patent: 2940081 (1960-06-01), Juilfs
patent: 3152334 (1964-10-01), Lingle
patent: 3481459 (1969-12-01), Becht
patent: 3861526 (1975-01-01), Leistner
patent: 4637768 (1987-01-01), Rabe
patent: 4679975 (1987-07-01), Leistner
patent: 4815910 (1989-03-01), Potucek
Hertz Alfred S.
Leistner Walter H.
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