Patent ID: 8162945

Claim:
A drill bit for drilling into a surface of a material comprising: a shaft having a drill end, said drill end having: (1) a drilling end point; (2) a distal portion having three faces meeting at a common point defining said drill end point located on the longitudinal axis of said shaft, said three faces arranged in a pyramidal shape, said three faces defining three cutting edges; and (3) a proximal portion extending away from said distal portion, said proximal portion including a continuing portion of at least one face of said three faces; said shaft further including: (a) at least one flute surface defined in said shaft for directing away debris produced during drilling, said flute surface intersecting with said continuing portion of said one face of said three faces to form a first portion of a trailing edge of said one face; and (b) a V-shaped groove surface disposed between said drilling end point and said flute surface, said V-shaped groove surface intersecting with said continuing portion of said one face to form a second portion of the trailing edge of said one face, said V-shaped groove surface intersecting said flute surface and arranged to direct debris into said flute surface, said second portion of said trailing edge defining a piercing edge, said piercing edge enhancing insertion of said drilling end point along said longitudinal axis and into the surface of the material being drilled.