Abstract: The invention relates to a decoupling sleeve having driving and driven shafts connected by dog clutches. The driving shaft transmits torque to the driven shaft in one direction during a forward direction of rotation where a rod-shaped connecting member is connected to two shafts so that the connecting member is detached from one of the shafts if subject to a reverse torque beyond a specific threshold. The two shafts become free in rotation relative to one another upon this detachment.

Abstract: The invention relates to a decoupling sleeve comprising a coaxial driving shaft and a coaxial driven shaft, connected by dog clutches by means of which the driving shaft transmits engine torque to the driven shaft in one direction during forward operation, a connecting member being connected to the first of the two shafts on the one hand and to the second shaft on the other hand, such that the connecting member is detached from the first shaft in the event of reverse torque occurring beyond a specific threshold, the two shafts being then free in rotation relative to one another. The sleeve is characterized in that the connecting member is connected by screwing to a nut which is mobile in translation relative to the first shaft against a return spring and mobile in rotation over a limited angle, the connecting member being detached from the first shaft by unscrewing the nut. The connecting member is, in particular, in the shape of a rod.