Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Impact driven fastener – e.g. – nail – spike – tack – etc. – Plural attached fasteners
Patent
1994-11-10
1996-01-09
Wilson, Neill R.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Impact driven fastener, e.g., nail, spike, tack, etc.
Plural attached fasteners
206345, 470 2, 411966, F16B 1508, B65D 8524
Patent
active
054824206
ABSTRACT:
A collated screw package is formed with a plurality of parallel screws secured to each other with two wires which are sufficiently friable to permit the screws to be singly detached from the package as the screw is driven by a rotary drilling device. The wires are preferably spot welded to unthreaded portions of each screw which prevents fragments of the wires and fragments of the spot welded joints from interfering with the screw threads. To form the unthreaded portions, the thread of each screw is interrupted for a portion to allow at least one of the wires to be secured to the screw shank at the interruption. The interruption is formed by a relief in a continuous surface of thread forming tooling.
REFERENCES:
patent: 3031670 (1962-05-01), Sillars
patent: 4836372 (1989-06-01), Shelton
patent: 4913611 (1990-04-01), Leistner
patent: 5409111 (1995-04-01), Takumi
Doherty James E.
Gabriel William L.
Buckman Thomas W.
Croll Mark W.
Illinois Tool Works Inc.
O'Brien John P.
Wilson Neill R.
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