Patent ID: 8141896

Claim:
A tandem suspension for a vehicle having a chassis, a front axle and a rear axle, the tandem suspension comprising on each side of the vehicle: a. a first leaf spring for connecting one of the front and rear axles to the chassis, the first leaf spring comprising opposed first and second extremities, the one of the front and rear axles being mounted between the first and second extremities, the first extremity of the first leaf spring being pivotally mounted to the chassis; b. a first balancer which is rotatable with respect to the chassis about an axis of rotation, the first balancer comprising an engaging member for engaging the second extremity of the first leaf spring, the axis of rotation being offset from the engaging member towards the one of the front and rear axles; c. a second leaf spring for connecting the other of the front and rear axles to the chassis, the second leaf spring comprising opposed first and second extremities, the other of front and rear axles being mounted between the first and second extremities, the first extremity of the second leaf spring being pivotally mounted to the chassis; d. a second balancer which is rotatable with respect to the chassis about an axis of rotation, the second balancer comprising an engaging member for engaging the second extremity of the second leaf spring, the axis of rotation being offset from the engaging member away from the other of the front and rear axles, wherein the axes of rotation of the first and second balancers are offset in opposite directions with respect to the chassis; e. a connector for load distribution between the first and second leaf springs, the connector linking the first and second balancers; each of the first and second balancers comprising: first and second plates forming an open area therebetween, each of the engaging members extending between the respective first and second plates; and first and second pins extending concentrically around the respective axis of rotation, the first pin extending from the first plate and the second pin extending in an opposite direction to the first pin from the second plate.