Patent ID: 8062138

Claim:
A torsional vibration damper comprising: a primary element ( 4 ; 86 ) with at least one primary driver ( 14 , 16 ; 98 , 100 ); a secondary element ( 8 ; 92 ) with at least one secondary driver ( 18 , 20 ; 96 , 98 ); at least one spring device ( 32 , 34 ) between the primary driver ( 14 , 16 ; 98 , 100 ) and the secondary driver ( 18 , 20 ; 96 , 98 ) for resiliently elastic coupling of the primary element ( 4 ; 86 ) and secondary element ( 8 ; 92 ); and at least one end block ( 42 ; 110 ) which is arranged on an end side of the spring device ( 32 , 34 ), with the primary element ( 4 ; 86 ) being rotatable relative to the secondary element ( 8 ; 92 ) from a neutral position into a first position, in which the primary driver ( 14 , 16 ; 98 , 100 ) is supported only on the spring device ( 32 , 34 ), and from the first position onward into a second position, in which the primary driver ( 14 , 16 ; 98 , 100 ) is supported on the spring device ( 32 , 34 ) and on the end block ( 42 ; 110 ), wherein in the first and second positions of the primary element ( 4 ; 86 ), torque of the torsional vibration damper ( 2 ; 84 ) can be transmitted exclusively directly between the primary driver ( 14 , 16 ; 98 , 100 ) and the spring device ( 32 , 34 ), the primary driver ( 14 , 16 ; 98 , 100 ) has a first section ( 44 ; 112 ) for support on the spring device ( 32 , 34 ) and a second section ( 46 ; 114 ) for support on the end block ( 42 ; 110 ), the second section ( 46 ; 114 ) is arranged so as to be recessed relative to the first section ( 44 ; 112 ) with respect to a tangential direction ( 48 , 50 ), and the spring device ( 32 , 34 ) has at least two spring elements ( 36 , 38 ) which are arranged in series in the tangential direction ( 48 , 50 ) and between which is arranged a sliding block ( 40 ), with a spacing limiting device ( 76 ) being provided between the sliding block ( 40 ) and the end block ( 42 ), which spacing limiting device ( 76 ) limits maximum spacing in the tangential direction ( 48 , 50 ) between the sliding block ( 40 ) and the end block ( 42 ).