Patent ID: 7909723

Claim:
An adjusting device with a CVT planetary roller transmission which has two sun wheels that are rotatable at an axial distance from each other around the same axis of rotation at different speeds, designed with sun wheel peripheral surfaces, a ring wheel with a radially inner peripheral surface and planet wheels with planet wheel peripheral surfaces that are in frictional contact with the inner peripheral surface and the sun wheel peripheral surfaces, wherein the surfaces that are in frictional contact with each other are shaped so that when there is an axial shift of the ring wheel relative to the sun wheels and an accompanying tilting of the axes of rotation of the planet wheels a difference in speed of rotation between the sun wheels changes, wherein the first sun wheel is rotationally drivable by a drive engine, the ring wheel is axially movable by an actuator and is rotationally drivable by an electric motor, and the second sun wheel rotationally drives an output shaft.