Patent ID: 7018316

Claim:
A traction drive organized about a center axis and comprising: an inner ring having a raceway that is presented away from the axis; an outer ring having a raceway that is presented inwardly toward the axes; first rollers located between the inner and outer rings and contacting the raceway of the inner ring; second rollers located between the inner and outer rings and contacting the raceway of the outer ring and the first rollers, there being at least one second roller for each first roller, with the second roller being offset slightly circumferentially with respect to its first roller so that the second roller occupies a convergent space between its first roller and the raceway of the outer ring; a first carrier in which the first rollers are received; and a second carrier in which the second rollers are received; one of the carriers being rotatable about the center axis slightly with respect to the other carrier so as to allow a circumferential displacement between the first and second rollers.