B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
B62M9/04—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio
Dispositif debrayable d'entrainement en rotation d'un essieu d'un vehicule a au moins trois roues et a deux moyens d'entrainement en rotation de l'essieu