Patent ID: 9528469
Filing Date: 2016-12-27
CPC Classification: F02K,F16H,Y02T

Claim Text:
1. A thrust reverser drive arrangement for use in driving a thrust reverser cowl for movement relative to first and second guide tracks, the drive arrangement comprising a first actuator located, in use, close to the first guide track, and a second actuator located, in use, close to the second guide track, the actuators being arranged to be driven axially in synchronism and at the same speed by a drive motor to drive the cowl for movement, wherein at least one of the first and second actuators is provided with a load limiter operable to apply a braking load to limit the transmission of loads through that actuator in the event that that actuator is subject to a compressive loading greater than a predetermined level, the load limiter being operable to apply a braking load to the actuator member to resist rotation thereof, thereby reacting applied torque to a housing of the actuator rather than increasing the axial compression of the output member; wherein at least one of the actuators comprises a rotatable actuator member, rotatable by the drive motor, in use, the rotatable actuator member being coupled through a ball or roller-screw coupling to an output member, rotation of the actuator member driving the output member for axial movement; and wherein the load limiter comprises a bearing supporting the actuator member for rotary motion relative to the housing, a resilient biasing element permitting limited axial movement of the actuator member in the event of the application of excessive loadings to the actuator, and an abutment element co-operable in the event of axial movement of the actuator member beyond a predetermined distance to transmit torque loadings between the actuator member and the housing.