Patent ID: 9604717
Date: 2017-03-28
CPC Classifications: B64C,F03G,F16D

Claim:
1. A control device comprising: a two piece shaft including a first shaft portion and a second shaft portion, the first shaft portion driving the second shaft portion during normal operation; a spline key detachably coupling the first shaft portion and the second shaft portion; a crankshaft operatively coupling the second shaft portion of the two piece shaft and a flight control surface; a driving mechanism coupled to the spline key and operable to move the spline key to engage and disengage the first and second shaft portions, the first and second shaft portions disengaged when a failure to the flight control surface is detected, and a secondary driving device operably coupled to the second shaft portion causing the second shaft portion to drive the flight control surface to a safe position independent of operation of the first shaft portion after the first and second shaft portions are disengaged.