Patent ID: 7891303

Claim:
A system for guiding a vehicle along a guiding rail, having a rolling surface and at least one side surface that constitutes a guiding surface, the system comprising: a guiding roller device cooperating with the rolling surface and the side surface of the rail and including a rolling part having a peripheral surface for rolling contact with the rolling surface of the rail, and at least one side part for contact with the side surface of the rail that faces the at least one side part, wherein the rolling part and the side part are rotationally connected to each other so that the side part rotates at the same speed that the rolling part rolls on the rolling surface of the rail, the side part includes at least one side roller, the side roller has, in radial section, a portion with a convex profile, with an outermost surface that contacts the side surface of the rail, and the rail has a substantial planar side surface for contacting the outermost surface of the convex profile of the side roller, so that the side roller, when in contact with the side surface of the rail, establishes a point of contact with the side surface of the rail.