F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
F16H—GEARING
F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
F16H37/021—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings toothed gearing combined with continuously variable friction gearing
Dispositif de transmission de vitesse avec marche arriere pour le deplacement d'un vehicule automobile, notamment d'un vehicule motorise a au moins deux-roues