Patent 9476459 was granted and assigned to Hamilton Sundstrand on October, 2016 by the United States Patent and Trademark Office.
A coupling shaft assembly system is disclosed. A coupling shaft assembly system may have a coupling shaft spline lock body having spline lock spline teeth, a main coupling shaft body having input spline teeth, and a locking bolt, wherein the locking bolt retains the coupling shaft spline lock body in substantially fixed communication with the main coupling shaft body, wherein the coupling shaft spline lock body retains the coupling shaft assembly system in mechanical communication with a power shaft. In this manner, a coupling shaft assembly system may reduce the axial forces transferred by the coupling shaft assembly system.