Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Impact driven fastener – e.g. – nail – spike – tack – etc. – Including integral locking means
Patent
1995-12-12
1997-07-01
Wilson, Neill R.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Impact driven fastener, e.g., nail, spike, tack, etc.
Including integral locking means
411456, 411922, F16B 1506, F16B 1508
Patent
active
056429746
ABSTRACT:
A building assembly comprises a wooden board, a metal framing member, and a fastener having an elongate shank, an enlarged head, and a generally pointed end and fastening the board to the framing member. The shank has a ringed portion with annular grooves defining annular rings having a uniform, outer diameter, helical grooves intersecting the annular grooves, a cylindrical land having a smaller diameter and dividing the ringed portion into an axially longer subportion nearer to the tip and an axially shorter subportion nearer the head, a cylindrical land between the tip and the ringed portion, and a cylindrical land between the head and the ringed portion. The fastener is driven through the board and through the framing member wall so that the head bears against the board, so that the tip and the shank form, from the wall of the framing member, a generally annular lip projecting toward the tip and so that the lip is disposed around the cylindrical land dividing the ringed portion. The wall of the framing member has sufficient resiliency for the lip when disposed around the cylindrical land to have an inner diameter smaller than the outer diameter of the annular ring nearest to the cylindrical land among the annular rings of the subportion nearer to the tip. Each helical groove taken in cross-section is either symmetrical or asymmetrical with respect to a plane comprising the axis defined by the shank and intersecting said helical groove where such helical groove is deepest.
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Eckmann Elizabeth J.
Gabriel William L.
Shelton Lawrence S.
Sygnator Henry A.
Illinois Tool Works Inc.
Wilson Neill R.
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