Patent ID: 11873092
Assignee: THE BOEING COMPANY
Field: Transport (Mechanical engineering)
Classification: CPC B  F | IPC B  F

Claim 15:
16. The method according to claim 14, wherein:
the step of frictionally coupling the power screw with the anti-back-drive mechanism to prevent rotation of the power screw in the second rotational direction, which is opposite the first rotational direction, when the second force is applied to the nut in the second axial direction, opposite the first axial direction, comprises:
engaging the second ratchet pawl with the second ratchet gear to prevent the second ratchet gear from rotating in the second rotational direction; and
frictionally coupling the second ratchet gear with the flange via the second friction device to oppose relative rotational motion between the flange and the second ratchet gear; and

the step of measuring the internal loading of the anti-back-drive mechanism when the second force is applied to the nut in the second axial direction along the power screw comprises a step of measuring the second load, applied to the second ratchet pawl by the second ratchet gear.