Device for controlling the relative displacement of two bodies, in particular vehicle seat

DEVICE CONTAINS A PLATE 1 FIXED AT ONE OF BODIES AND WITH A CROWN GEAR 12 IS RESTING IN MAKING WITH CROWN GEAR 14 SOLIDARITY OF MOBILE BOWL AXIALLY UNDER THE ACTION OF A PLATEAU BALL 26 46 THE ROD LONG CONTROL THROUGH 12 OF aXIALLY CROWN PLATE. 16 BOWL IS EXTENDED BY 18 GEAR ENGAGEMENT WITH TEETH OF A BAR 2 CONNECTING THE SECOND BODY SO THAT ITS CAUSES ROTATION MOVEMENT STRAIGHT FROM THIS BAR 2.