Patent ID: 7244185

Claim:
A decoupling element and two support power transmission combination comprising: a decoupling element made of deformable material; and two supports; wherein the decoupling element is interposed between faces ( 31 , 41 ; 312 , 413 ) of the two supports ( 3 , 4 ; 3 ′, 4 ′; 300 , 400 ) of a drive device having a central axis (X′X) of rotation, one of the supports adapted to be driven, the decoupling element adapted to transmit power from the one support to the other support, the other support adapted for further power transmission, the decoupling element further comprising a ring ( 2 , 200 ) comprising a central core ( 1 ) and at least two opposite faces ( 21 e , 21 i ; 212 , 213 ), and being characterized in that these faces ( 21 i , 21 e ; 212 , 213 ) have abrupt projections meshed together with complementary abrupt projections of opposing faces ( 31 , 41 ; 312 , 313 ) of the supports ( 3 , 4 ; 3 ′, 4 ′; 300 , 400 ), meshing of the ring ( 2 , 200 ) creating zones (K 1 ) at the roots of the projections ( 2 e , 2 i ; 2 ′ e , 2 ′ i ; 3 e , 4 i ; 3 ′ e , 4 ′ i ; 20 e , 20 i ; 202 , 203 ; 302 , 403 ) in the central core, where the central core ( 1 ) substantially works in shear for transmission of said power from one support to the other, these zones being regularly distributed over the faces ( 21 e , 21 i ; 212 , 213 ) of the ring ( 2 , 200 ), the abrupt projections of the faces ( 21 i , 21 e ; 212 , 213 ) present whether or not the abrupt projections mesh together with the complementary abrupt projections of the opposing faces ( 31 , 41 ; 312 , 313 ) of the supports.