Patent ID: 7104608

Claim:
A device for adjusting a position of at least one movable part of a vehicle seat comprising: first and second connection elements, for connecting of at least the first connection element to a movable part of the seat; connector means for connecting the first and second connection elements together so as to enable at least the first connection element to rotate about a first axis of rotation; control means for selectively either allowing the first connection element to rotate or locking the first connection element in a preferred angular position, said control means comprising: at least partly circular toothing provided around an aperture in the first connection element; at least two gears engaging with said toothing and movable with planetary motion about the first axis of rotation; and a lever system for shifting gears between a first position in which the gears are in engagement with each other and with the toothing, preventing rotation of the first connection element, and a second position in which the gears are in engagement only with the toothing and wherein the first connection element is free to rotate, the lever system maintaining the gears always in mutually complementary positions enabling the gears to engage with each other when the gears pass from the first position to the second position.