automatically producing the engagement of the clutch when the clutch members are moving at the same speed; Indicating synchronisation

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Details of mechanically-actuated clutches not specific for one distinct type > Arrangements for synchronisation, also for power-operated clutches (shape or mounting of interengaging parts of clutch members to facilitate engagement F16D11/08) > automatically producing the engagement of the clutch when the clutch members are moving at the same speed; Indicating synchronisation