Patent ID: 6193266
Filing Date: 2001-02-27
Classification: B60G

Abstract:
In a tandem axle suspension for a vehicle chassis which includes fore-and-aft extending chassis side frame members, said suspension having fore-and-aft spaced axles with ground wheels mounted on opposite ends of the axles, a fore-and-aft extending walking beam extending between the ends of the axles on each side of the suspension and pivotally supported at its opposite ends by adjacent ends of the axles, and a stabilizer tube extending between the midpoints of said walking beams in pivoted relationship therewith,the improvement providing combined vehicle roll and fore-and-aft stabilization comprising, a plurality of air springs mounted on each of said walking beams in chassis supporting relationship with one of said fore-and-aft extending chassis side frame members, a crank arm on each side of said suspension fixedly secured at its proximal end to the adjacent end of said stabilizer tube and pivotally connected at its distal end to a fixed support on a chassis side frame member at a location forward of said stabilizer tube and above the front axle whereby each said crank arm is upwardly and forwardly inclined, said crank arms in co-action with said stabilizer tube providing both roll and fore-and-aft stability to a vehicle comprising said vehicle chassis and said suspension.