20120099946 | MULTI-SHANK NAIL - A multi-shank nail has a first shank, a second shank and a washer; wherein both of the first shank and the second shank have an enlarged head at their top ends and a point at their lower ends. The first shank has a flat contact surface along its longitudinal length at an upper portion, and the second shank has a shape of a longitudinally cut nail such that the second shank is capable of corresponding to the contact surface on the first shank. The first shank has an inclined face and an extended portion in sequence below the contact surface. At least one of the first shank or second shank comprises a plurality of notches opposite the contact surface, and the notches make the first shank or second shank easier to bend. | 04-26-2012 |