Abstract: A hybrid drive vehicle having: at least one driving wheel; an internal combustion engine provided with a drive shaft; an electric machine provided with its own shaft; a gearbox which transmits motion to the driving wheel; a disengagable coupling which acts as a synchroniser and is interposed, to establish a disconnectable mechanical connection, between the drive shaft and the shaft of the electric machine; and a transmission shaft interposed, to establish a permanent mechanical connection, between the shaft of the electric machine on the opposite side to the coupling and the gearbox.

Abstract: A hybrid drive vehicle having: at least one driving wheel; an internal combustion engine provided with a drive shaft; an electric machine provided with its own shaft; a gearbox which transmits motion to the driving wheel; a disengagable coupling which acts as a synchroniser and is interposed, to establish a disconnectable mechanical connection, between the drive shaft and the shaft of the electric machine; and a transmission shaft interposed, to establish a permanent mechanical connection, between the shaft of the electric machine on the opposite side to the coupling and the gearbox.

Abstract: A planetary transmission comprising an input member, an output member, a planetary gear assembly mechanically disposed between the input member and the output member, a centrifugal clutch mechanically disposed between the input member and the output member, a one-way clutch mechanically disposed between the input member and the output member, the one-way clutch for directly coupling the input member and the output member from zero rotational speed up to a first rotational speed, the centrifugal clutch for directly coupling the input member and the output member from a second rotational speed greater than zero rotational speed to a third rotational speed which is in excess of the first rotational speed, and a brake member for selectively controlling rotation of the planetary gear assembly.

Abstract: A planetary transmission comprising an input member, an output member, a planetary gear assembly mechanically disposed between the input member and the output member, a centrifugal clutch mechanically disposed between the input member and the output member, a one-way clutch mechanically disposed between the input member and the output member, the one-way clutch for directly coupling the input member and the output member from zero rotational speed up to a first rotational speed, the centrifugal clutch for directly coupling the input member and the output member from a second rotational speed greater than zero rotational speed to a third rotational speed which is in excess of the first rotational speed, and a brake member for selectively controlling rotation of the planetary gear assembly.