Importance

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Abstract

A no-back braking assembly for a rotary actuator includes a rotatable input shaft, a rotatable output shaft, wherein said output shaft is co-axial with said input shaft, and a braking arrangement operably coupled with said output shaft. The braking arrangement comprises first and second braking members and biasing means, and a torque transfer device mounted between said shafts for transferring torque applied to said input shaft to said output shaft. The first and second braking members are relatively moveable between a first position in which they are in mutual engagement and in which rotation of said output shaft is braked, and a second position in which they are mutually spaced and in which said output shaft is capable of relatively free rotation, the biasing arrangement being arranged to urge the braking members into their first position. The torque transfer means is arranged to overcome said biasing arrangement, whereby to urge said first and second braking members into their second position upon application of torque above a predetermined threshold to said input shaft, and to cause rotation of said output shaft.

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First Claim