To provide a driving device which proposes a possibility of reducing a rotating mass and a delay time of working tool at low costs.
A coupling sleeve (1), while a coupling hub (10) is driven to rotate, follows thereafter through lock teeth (14), and on the other hand the coupling sleeve (1) which is connectable allowing faster rotation can over-run the coupling hub (10). In order to achieve brake action by a lagging large mass, coned disc springs (25, 29) are provided in such a way that the delay time tends to decrease, wherein these coned disc springs are secured non-rotatably against the coupling hub (10) and held on the end faces (8, 9) of the coupling sleeve (1) by a friction surface 26 with pre-tension.
GKN WALTERSCHEID GETRIEBE GMBH
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