Patent ID: 8763726

Claim:
A drill bit for drilling a cavity, wherein the drill bit comprises: a chassis configured to rotate about an axis; a plurality of gauge pad sets each gauge pad set comprising at least one gauge pad; a plurality of gauge pad structures moveably coupling a plurality of the gauge pads with the chassis, wherein the plurality of gauge pad structures moveably coupling a plurality of the gauge pads with the chassis comprises at least one of the gauge pads of at least one of the plurality of gauge pad sets being coupled with at least one of the gauge pads of at least one other of the plurality of gauge pad sets; and a control system configured to control the a position of two or more of the plurality of gauge pads, wherein the control system controls the position of the two or more of the plurality of the gauge pads to define a gauge pad profile and wherein: the drill bit comprises a plurality of cutters and the cutters define a cutting diameter of the drill bit; the control system controls at least two of the plurality of gauge pads to define a variable gauge diameter between a first diameter and a second diameter; and the first diameter is about 1 millimeter less than the cutting diameter and the second diameter is about 1 millimeter greater than the cutting diameter.