Patent ID: 8328155

Claim:
A rail adjustment system for a motor vehicle seat, the rail system comprising an electromotive spindle drive; and a flexible drive shaft configured to be coupled to a threaded spindle for the longitudinal adjustment of a rail pair whose rails are connected to one another by means of a retaining element, wherein the retaining element has a guide duct for holding the drive shaft, wherein the guide duct is formed by a plurality of support elements and support gaps, and wherein the guide duct is bounded by a first support row on one side of the guide duct, the first support row comprising support elements and support gaps that are arranged one behind the other and such that they alternate in the longitudinal direction of the shaft, and by a second support row, which is situated opposite and at a distance from the first support row, the second support row comprising support elements and support gaps that are different from the support elements and support gaps of the first support row.