Actuator apparatus, in particular for an aircraft flight control

Abstract

Actuator apparatus, in particular for an airplane flight control, the device comprising at least two main drive systems and a differential which connects outlet shafts from the two systems to a control shaft connected to an element to be actuated and also including means for locking each outlet shaft of the drive systems when the system for driving it is no longer operating; the apparatus including at least one auxiliary drive motor and a clutch mechanism mounted on the outlet shaft of one of the main systems and suitable for automatically driving said outlet shaft by means of the auxiliary motor when the corresponding main drive system is not operating and for automatically locking said outlet shaft when said main drive system and said auxiliary motor are not operating.

Dependencies are inferred from the claim text.