Patent ID: 8047922

Claim:
A vibration damper ( 1 ), including: a multistage torsion vibration damper ( 2 ), comprising at least two coaxially disposed damper assemblies ( 5 , 7 ), each of them comprising at least one input component ( 8 , 11 ) and one output component ( 10 , 12 ) and being disposed on different diameters; a first damper assembly ( 5 ) being disposed on the outside in a radial direction and configured as a series damper, comprising at least two dampers ( 6 . 1 , 6 . 2 ) connected in series and coupled via an intermediate flange ( 23 ); and a second damper assembly ( 7 ) being disposed on the inside in the radial direction and including a flange ( 24 ) forming the output component ( 10 , 12 ), the flange ( 24 ) including a plurality of radially outwardly extending protrusions ( 30 ), wherein: the intermediate flange ( 23 ) comprises at least two annular disk-shaped elements ( 23 . 1 , 23 . 2 ) disposed at a distance in the axial direction and extending on both sides of the flange ( 24 ) at least into the portion of the outer circumference ( 29 ) of the output component ( 11 ) of the first damper assembly ( 5 , 7 ), each annular disk-shaped element ( 23 . 1 , 23 . 2 ) comprising respective openings ( 25 ) extending in the circumferential direction, wholly enclosed by said each annular disk-shaped element ( 23 . 1 , 23 . 2 ), and at least partially defined by respective radial outward portions of said each annular disk-shaped element ( 23 . 1 , 23 . 2 ); and, the plurality of radially outwardly extending protrusions ( 30 ) are wholly axially aligned with the respective openings ( 25 ) radially inward of the respective radial outward portions of said each annular disk-shaped element ( 23 . 1 , 23 . 2 ).