Patent ID: 6971459

Claim:
A drill bit stabilizing system comprising, a body member having an axis, at least one recess formed in the body member, the recess housing at least one moveable stabilizing member when in a first retracted position, the stabilizing member being biased along a diagonal angle with the axis to a second extended operating position which extends downward and outward relative to the body member to selectively engage the surface of a pilot bore hole wall during a drilling operation so as to stabilize an under gauge drill bit used in association with the stabilizing system, the body member further comprising at least one fixed stabilizing surface positioned in axially spaced relationship to the at least one movable stabilizing member, said body member comprising a gauge cutter means positioned above the moveable stabilizing member and below the fixed stabilizing surface, the gauge cutter positioned to expand the pilot hole; wherein the at least one moveable stabilizing member comprises outer contact faces adapted to engage the walls of the pilot bore hole when in an operating position, and an inner slide surface adapted to slidingly engage a corresponding slide surface formed in the body member, wherein the inner slide surface comprises at least one relief groove.