Patent ID: 8302704

Claim:
A steering head for use with a casing, the steering head comprising: a generally cylindrical body defining a longitudinal body axis and having a bore channel, a first body end with a lead edge and a second body end with a rear edge, the second body end being mountable to the casing, and a body surface extending from the lead edge to the rear edge; an outer tube having an internal side and an external side, the internal side generally facing the body surface, and the outer tube extending from the first body end to the second body end; a steering flap disposed on the external side of the outer tube and having a distal end, a hinge end, a first flap face and an opposing second flap face, the first flap face facing radially inwardly toward the body surface and the second flap face facing radially outwardly away from the longitudinal body axis; and a biased hinge secured to both the outer tube and the hinge end of the steering flap such that the steering flap is mounted to the outer tube, wherein the biased hinge is operative to retract the steering flap into the retracted position from the extending position.