Articulated suspension system

A vehicle moveable along the ground comprising:

• a body having a width extending in a predetermined transverse direction;
• a pair of side suspensions lying at either side of said body;
• each side suspension including a pair of end wheels rotatable about transverse axes including a front wheel and a rear wheel, a middle wheel rotatable about a transverse axis, a rear linkage extending between said rear and middle wheels, a front linkage extending between said front wheel and said rear linkage, and a body link having front and rear ends pivotally connected respectively to said front and rear linkages;
• one of said linkages of each side suspension including a first bogie link having opposite ends coupled to said middle wheel and one of said end wheels, and the other of said linkages including a second bogie link having a first end coupled to the other one of said end wheels and a second end and also including means coupling the second end of the second bogie link to the first bogie link which allows the second end of the second bogie link to pivot about a transverse axis and move forward and rearward;
• and
• a transverse suspension for coupling said side suspensions to said body including an intermediate cross link having a middle pivotally coupled to said body about a longitudinal axis extending in a direction substantially perpendicular to said transverse axes and having a pair of ends, and a pair of end cross links each having an inner end pivotally connected to an end of said intermediate cross link and an outer end pivotally connected to an end of said body link.