Patent ID: 7134474

Claim:
An elastic coupling device for connecting two pieces in rotation, comprising: a first cylindrical piece ( 46 ; 1 ), a second cylindrical piece ( 47 ; 3 ) that is at least partly tubular, surrounds the first piece via its tubular part and is provided with an inner toothset ( 9 ), at least one elastic means ( 12 ; 22 ) mounted inside the first piece ( 46 ; 1 ) in a housing ( 11 ) and working in compression substantially radially, at least one pinion ( 7 ; 20 , 26 , 27 ; 7 a , 7 b ) mounted in the first piece and meshing with the toothset of the second piece, and a means ( 5 ; 19 ; 23 ; 24 ) for compressing the at least one elastic means, the means for compressing being entrained by the at least one pinion.