Patent ID: 11873074
Assignee: AEROVIRONMENT, INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC B  A  F  H | IPC A  B  F  H

Claim 14:
15. A system comprising:
a rotatable hub coupled to a rotatable shaft, the rotatable hub having a skid surface;
a motor rotatably coupled to the rotatable hub through the rotatable shaft; and
a first structure having a skid face for providing reinforcing contact spaced immediately apart from and in complementary opposition to the skid surface of the rotatable hub;
wherein a bending deformation of the rotatable shaft is limited by reinforcing contact between the first structure and the skid surface of the rotatable hub as the rotatable shaft bends; and
wherein a possibility of damage to the motor by a propeller ground strike is reduced by the reinforcing contact between the first structure and the skid surface of the rotatable hub during at least a portion of a rotation of the rotatable shaft.