Patent 7448329 was granted and assigned to Bombardier Transportation on November, 2008 by the United States Patent and Trademark Office.
A wheel set guidance assembly is provided for suspending a wheel set bearing (10) of a wheel set (20) to a bogie frame (30), comprising separate vertical (50), lateral (70) and longitudinal (40) guidance elements for independent guidance of the movement of the wheel set in vertical, lateral and longitudinal directions wherein the stiffness of the guidance elements can be selected independently of each other.