Patent ID: 7160217

Claim:
A broadhead assembly comprising a blade, characterized in that the blade is metal; the blade characterized as substantially planar, the blade defining a plane of symmetry relative to the blade; the blade comprising first and second sharp edges, the first and second sharp edges symmetric relative to the plane of symmetry; the first and second sharp edges nearing each other and defining a tip area therebetween; each of the first and second sharp edges defining a cutting bevel of between 17 and 30 degrees; the tip area characterized by third and fourth sharp edges, the third and fourth sharp edges symmetric relative to the plane of symmetry; the third edge adjacent to the first edge at a first inflection point and adjacent to the fourth edge at the tip area; the fourth edge adjacent to the third edge at the tip area and the second edge at a second inflection point; wherein an angle formed between the first inflection point, the tip area, and the second inflection point is between 40 and 65 degrees; the first edge and the second edge and the third edge and the fourth edge each having a length; each of the first and second sharp edges extending at least an inch in length; the length of the third edge characterized as between ⅓ and 1/7 of the length of the first edge; the length of the fourth edge characterized as between ⅓ and 1/7 of the length of the second edge; and each of the third edge and the fourth edge defining a penetrating bevel of between 20 and 35 degrees; wherein the first edge and the second edge are straight; further comprising a ferrule attached to the blade, the ferrule extending axially in a direction away from the tip area and coplanar with the blade and within the plane of symmetry, the ferrule farther comprising attachment means at an end of the ferrule away from the tip area.