Patent ID: 6808235
Filing Date: 2004-10-26
Classification: B60N

Abstract:
A seat adjustment mechanism for adjusting the position of seat parts, the mechanism being of a type comprising a pair of meshing gears engaged with one another and which are adapted to provide a locking drive, the meshing gears being arranged such that a degree of backlash is defined by and exists between respective meshing teeth of the gears in a locked state of said mechanism, characterised in that one of a magneto-rheological and electrorheological fluid at least partially occupies a clearance space defined between said pair of meshing teeth of said pair of meshing gears, and activation means are provided to activate and change the state of the said one of a magneto-rheological and electrorheological fluid within said clearance space such that the activated one of a magneto-rheological and electro-rheological fluid, substantially locks the pair of meshing gears relative to one another, thereby reducing said backlash defined between said adjacent teeth of said meshing teeth.