Patent ID: 8105001
Filing Date: 2012-01-31
Classification: B23B,Y10T

Abstract:
1. A drill comprising: a tip portion comprising a tip; a longitudinal, rotational axis; a first flute and a second flute; a chisel edge being disposed at said tip of said drill; a first cutting tooth and a second cutting tooth being disposed between said flutes and being separated by said chisel edge; said first cutting tooth being asymmetrical with respect to said second cutting tooth; said first cutting tooth being of substantially similar size and comprising a substantially similar amount of material as said second cutting tooth; said first cutting tooth having a land which extends over approximately 90 degrees, and said second cutting tooth having a land which extends over approximately 90 degrees; said land of said first cutting tooth extends over a greater number of degrees than said land of said second cutting tooth; said first cutting tooth comprising: said second cutting tooth comprising: