Patent ID: 8272989

Claim:
A variable-ratio transmission for distributing a drive torque to at least first and second drive output shafts ( 8 , 9 ), the first and the second drive output shafts are coaxially aligned along an axis, the variable-ratio transmission comprising a differential, wherein the variable-ratio transmission further comprises an electric motor ( 5 ) for distributing the drive torque directly between the first and the second drive output shafts ( 8 , 9 ) and a plus planetary gearset ( 2 ), which serves as a variable-ratio unit, is arranged coaxially with the first output shaft ( 8 ), the first output shaft, which is located on a side of the differential ( 1 ) facing toward the planetary gearset ( 2 ), is continuously connected to the outer sun gear ( 3 ) of the plus planetary gearset ( 2 ), and a web ( 4 ) of the planetary gearset ( 2 ) is connected to the electric motor ( 5 ) and directly engages the outer sun gear, and an inner sun gear ( 6 ) of the planetary gearset ( 2 ) is connected, by a countershaft ( 7 ), to the second drive output shaft ( 9 ), the countershaft rotates about an axis that is parallel to and radially offset from the axis of the first and the second drive output shafts.