Patent ID: 6676526
Filing Date: 2004-01-13
Classification: B64C

Abstract:
An anti-flail shaft assembly comprising:a first shaft having a first attachment flange; a second shaft having a second attachment flange; a flexible multi-disk coupling member coupled to the first attachment flange with a first set of fasteners and coupled to the second attachment flange with a second set of fasteners, such that the first attachment flange and the second attachment flange are not directly fastened to each other; a rigid anti-flail cup member having a radial base portion and a rigid shoulder portion, the radial base portion being coupled to the first attachment flange, and the rigid shoulder portion extending longitudinally from the first attachment flange beyond the flexible multi-disk coupling member and the second attachment flange; and a radial clearance between the second attachment flange and the rigid shoulder; wherein failure of the flexible multi-disk coupling member, a fastener of the first set fasteners, or a fastener of the second set of fasteners, results in a selected eccentric rotation of the first shaft relative to the second shaft, such that torque is transmitted from the first shaft to the second shaft through the rigid shoulder.