ROUND DEVICE TO FLAP BACK VEHICLE SEAT Russian patent published in 2014 - IPC B60N2/22 

FIELD: transport.

SUBSTANCE: invention relates to the vehicle seat tilt regulator. A round vehicle seat tilt regulator comprises a holder, a gear sector, a gear ring with inner teeth, N locking mechanisms displacing between locking and unlocking positions and a control device to displace the said N locking mechanisms between the said locking and unlocking positions in response to the turn of a working shaft. The holder has N guide locking elements extending from the surface to the gear sector to guide every locking mechanism. N-1 guide locking mechanisms of the N guide locking mechanisms have a round guide surface with the centre of revolution. One guide of the locking mechanism has a round guide surface with the shifted centre of revolution.

EFFECT: reliable locking of seat back rest.

8 cl, 7 dwg