Patent ID: 8663052

Claim:
An infinitely variable transmission device ( 4 ) for a vehicle drivetrain ( 1 ) having a variator ( 8 ) and a gearshift transmission device ( 9 ) by which gear ratios in a plurality of ratio ranges can be produced with continuous variation, and a planetary transmission device ( 7 ) comprising first, second and third shafts, the first shaft is directly coupled to and driven by a transmission input shaft ( 12 ), the second shaft is in active connection with the gearshift transmission device ( 9 ), and the third shaft drives a drive input of the variator ( 8 ), such that torque to be transmitted is transmittable via at least two power paths between the transmission input shaft ( 12 ) and a transmission output ( 10 ), the variator ( 8 ) being arranged in one of the two power paths, the gearshift transmission device ( 9 ) being arranged between the variator ( 8 ) and the transmission output ( 10 ), the first shaft ( 11 ) of the planetary transmission device ( 7 ) being a ring gear, and the third shaft ( 16 ) of the planetary transmission device ( 7 ) is a sun gear and is a hollow shaft.