Patent ID: 6854160

Claim:
A caster assembly for supporting a load asserted by a piece of furniture positioned on a generally planar surface, said caster assembly comprising a housing adapted to be affixed to the furniture, said housing containing at least one spherical roller, said at least one spherical roller adapted to contact the generally planar surface for supporting said caster assembly, a plurality of spherical balls located in area intermediate said at least one spherical roller and said housing, an annular recess formed in said housing and extending upwardly from said intermediate area, said spherical balls adapted to move in a continuous circulatory path within said annular recess in said housing wherein said spherical balls are not in contact with said at least one spherical roller and said spherical balls enter said intermediate area from said annular recess by means of gravity, wherein said at least one spherical roller is freely rotatable under load to allow movement of the piece of furniture in any direction.