US Patent 8087479 Drill bit with an adjustable steering device

A drill bit is provided that includes a force application device on a body of the drill bit. The force application device includes a force application member pivotally coupled to the drill bit and configured to extend from the drill bit body to apply force on a wellbore wall when the drill bit is used to drill a wellbore, and an actuator configured to actuate the force application member to apply force on a wellbore wall during drilling of the wellbore.