Deformed shank fastener
AssigneeIllinois Tool Works Inc.
InventorsAnthony M. Versino, Kenneth R. Levey, Jeffrey L. Trzaskus, Lawrence S. Shelton, Donald E. Bergstrom
Life of this patent
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Abstract
A nail has a head, a penetrating tip and a shank extending from the head to the penetrating tip. The shank has a circumference and a longitudinal axis. A plurality of rows of deformations formed as teeth are formed in the shank extending outwardly of the shank. The rows are formed in a spiral pattern along the length of the shank from about the head to about the penetrating tip. The rows of teeth are formed parallel to one another and formed at an angle of at least 50 degrees relative to a cross-sectional plane perpendicular to a longitudinal axis of the nail.
Claims22
A nail comprising:
- a head;
- a penetrating tip;
- a shank extending from the head to the penetrating tip and having a circumference and a longitudinal axis;
- and
- a plurality of rows of deformations in the shank extending outwardly of the shank, the rows formed in a spiral pattern along the length of the shank from about the head to about the penetrating tip, the rows of deformations being formed parallel to one another and formed at an angle of at least 50 degrees relative to a cross-sectional plane perpendicular to a longitudinal axis of the nail.
A nail comprising:
- a head;
- a penetrating tip;
- a shank extending from the head to the penetrating tip and having a circumference and a longitudinal axis;
- and
- a plurality of spiral pattern rows of deformations in the shank extending outwardly of the shank, the rows formed configured to impart a rotating motion to the nail as the nail is driven into a substrate, the deformation including an inwardly tapered leading end and an interference face trailing end to provide a resistance to withdrawal of the nail after being driven into the substrate.
Dependencies are inferred from the claim text.