The invention concerns a clutch with a ring gear (22) integral with an axially oriented ring-shaped rim, presented externally by a guide washer (17) elastically coupled with a disc (14) interlocked in rotation with the output element (1) of a hydrokinetic coupling apparatus. The ring gear (22) meshes with a drive disc designed to be releasably interlocked in rotation with said apparatus input element (2). The invention is applicable to motor vehicles.
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