Patent ID: 8635931

Claim:
A flexible flywheel ( 2 ), comprising: an inertia mass ( 31 ); at least two stacked flexible discs ( 9 , 10 , 11 ) having inner peripheral parts ( 12 ) adapted to be secured to a drive shaft, and outer peripheral parts ( 30 ) secured to the inertia mass ( 31 ); each of the flexible discs ( 9 , 10 , 11 ) comprising at least two parallel flat parts ( 15 , 16 , 17 ) offset axially (D 1 , D 2 ) and connected to one another by at least one curved part ( 18 , 19 ); the curved parts ( 18 , 19 ) of the flexible discs ( 9 , 10 , 11 ) being substantially nested one inside the other; the at least two flexible discs ( 9 , 10 , 11 ) being spaced from each other in at least one region adjacent to the curved parts thereof so as to form a space ( 23 , 27 , 29 ) between the adjacent flexible discs in order to facilitate the axial deformation of the flexible discs ( 9 , 10 , 11 ).