| 摘要 |
A nail (10) having a plurality of grooves (14) configured to reduce the a mount of material needed to create the nail and increase the holding power o f the nail, while only "minimally affecting the bending yield strength of th e nail and other important properties. The nail includes a relatively high n umber of grooves having a relatively shallow depth to retain a cross-section al geometry of the shank 812) that permits the formation of a full round hea d (11) of sufficiently large diameter such that pull through resistance of t he nail is not- significantly affected. Various embodiments of such a nail a re disclosed. In a first embodiment, the grooves are semi-circular and are d isposed evenly and symmetrically about the circumference of the shank. In a second embodiment, a protrusion is formed at one tangent point (corner) of e ach of the plurality of grooves. In a third embodiment, a protrusion is form ed at each tangent point of each of the plurality of grooves. Ih other embod iments the grooves may be unevenly and asymmetrically disposed about the cir cumference- of the shank, the grooves may comprise non-semi-circular geometr ies and the grooves may comprise deformations.
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