US Patent 9096264 Implement carrier with steerable tracks

An agricultural implement having a steering mechanism comprising a outer hitch, a main carriage connected to the outer hitch by a first pivoting connection, a steering system disposed on the main carriage and an endless track assembly connected to the main carriage by a second pivoting connection and to the steering system by a third pivoting connection. The pivoting connections enable the tracks to be actively steered and remain parallel to the surface over which the implement travels.