Abstract: Coupling mechanism for transmission between a drive shaft and a driven shaft including support frames, first and second lined independent axle shafts rotatably mounted on the support frame, a box, in the frame and planet and satellite pinion assembly including a first planet pinion connected to the first axle and a second planet pinion connected to the second axle. The first and second satellite pinions are mounted in the box, independent of the support frame. Two coil clutch members are mounted on the box, coaxial with the axle shaft. Each of the coil clutch members being placed on either side of the box and including a plurality of coils and being traversed by one of the axle shafts that are independently mounted. Two driving clutch members, formed of ferromagnetic material, are each integrally mounted to one of the first and second axle shafts in a position parallel to and near to one of said coil clutch members, respectively.