Patent ID: 7032704

Claim:
Electrically assisted, power steering system for motor vehicles comprising an input shaft ( 6 ) which is in active connection with a steering wheel for transfer of a steering torque, an output member which is in active connection with wheels to be steered, a servo motor ( 7 ) which exerts power assistance directly or indirectly onto the input shaft ( 6 ) or the output member, the input shaft ( 6 ) and the output member are connected to each other by a torsionally elastic member, such that a limited rotational motion is possible between the input shaft ( 6 ) and the output member, and a detection unit ( 15 ) which includes at least one sensor for detecting a direction and an intensity of the steering torque acting on the input shaft ( 6 ), the input shaft ( 6 ) is supported on an end facing the steering wheel in a housing ( 1 ) by a roller bearing that is formed as an elastic, flexible roller bearing ( 13 ) and includes cylinder rollers ( 13 . 5 , 13 . 6 ) at least one of which, located at a peripheral position, is an elastically deformable cylinder roller ( 13 . 6 ) having a diameter that is slightly greater than a diameter of the remaining cylinder rollers ( 13 . 5 ), the at least one elastically deformable cylinder roller ( 13 . 6 ) is formed as thin-walled, non-cutting shaped hollow cylinder that includes two opposing ends, each of the ends including a collar ( 13 . 6 . 1 , 13 . 6 . 2 ) that extends radially inwardly.