A final control element for superimposed steering engagement of a vehicle
steering system with a superposition gear having two input shafts and one
output shaft, in order to attain a radial freedom from play, the
superposition gear is provided with a two-stage, modified planetary gear,
having a planet carrier, at least one stepped planet comprising two
axially aligned planet wheels connected to one another fixed against
relative rotation, and two sun wheels or ray wheels; the first input shaft
is connected to one sun or ray wheel, and the output shaft is connected to
the other sun or ray wheel, fixed against relative rotation, while the
planet carrier is drivable via the second input shaft, and the at least
one stepped planet and the sun wheels are biasing toward provided for
suppressing a tooth flank play that occurs between.
