Patent ID: 7779981

Claim:
A clutch drum ( 100 ) which is directly connected to a toothed wheel ( 16 ), in particular to a toothed wheel designed as a chain wheel for a motor saw, characterised in that the clutch drum ( 100 ) is provided with a recess ( 11 ) having a tooth profile ( 12 ) that is a unitary component of the clutch drum ( 100 ) and is not a separate component attached to the clutch drum ( 100 ), the toothed wheel ( 16 ) has a step ( 22 ), on which is formed a toothed wheel profile ( 17 ), wherein the toothed wheel profile ( 17 ) is inserted in the tooth profile ( 12 ) forming a rigid connection between the toothed wheel ( 16 ) and the recess ( 11 ) of the clutch drum ( 100 ), which is welded from inside the clutch drum ( 100 ), and wherein the toothed wheel ( 16 ) has a centring ring ( 26 ), which is inserted in the recess ( 11 ) of the clutch drum ( 100 ).