Patent ID: 7677338

Claim:
A system for both down drilling and up drilling with a drill bit, comprising: a bit body having an axis, a shank that defines an upper end; at least one bit leg with a roller cone located opposite the shank that define a lower end; a make-up shoulder between the shank and the leg; the bit leg defining an outer diameter of the drill bit with respect to the axis; a top transition surfaces located above the bit leg; a transition edges defined between the bit leg and the top transition surface; a compensator cap located in an aperture in the top transition surfaces; a leading edge transition surfaces and a trailing edge transition surface located on opposite sides of the top transition surface in a circumferential direction; and compensator area hardfacing on the top transition surface on leading and trailing sides of the aperture for the compensator cap, for cutting formation and providing wear protection for the bit body during up drilling or back reaming.