Patent ID: 8382625

Claim:
A device ( 2 ), for a vehicle drivetrain ( 1 ), comprising: a transmission unit ( 3 ) being continuously variable for achieving various transmission ratios, and the transmission unit ( 3 ) comprising a hydrostatic transmission; a hydraulic device ( 4 ) for providing an additional source of power and a drive torque in an area of a drive output ( 5 ) of the vehicle drivetrain ( 1 ) and in whose area a drive output torque of the vehicle drivetrain ( 1 ) is at least partially supported upstream of the transmission unit ( 3 ); a reversing gear system ( 6 ) being connected for reversing a rotational direction; the hydraulic device ( 4 ) being actively connectable with the transmission unit ( 3 ) by the reversing gear system ( 6 ); and the hydraulic device ( 4 ) being connected to an auxiliary drive output shaft ( 52 ).