US Patent 12012807 Drill bit with offset counter-rotating cutters

A drill bit is provided. The drill bit includes a bit body and an axle disposed in the bit body. The axle includes a first axle portion extending in a longitudinal direction and a second axle portion extending in the longitudinal direction. A longitudinal end of the first axle portion is continuous with a longitudinal end of the second axle portion. When viewed from the longitudinal direction, the first axle portion and the second axle portion are not coaxial, and an outer perimeter of the first axle portion is located entirely within an outer perimeter of the second axle portion. The drill bit also includes a first cutter disposed on the first axle portion and a second cutter disposed on the second axle portion.