Patent ID: 9050873
Filing Date: 2015-06-09
Classification: B60G

Abstract:
1. A suspension system for a vehicle axle comprising: a leaf spring configured to be coupled at a front end and a rear end to a frame member of the vehicle; an axle coupling assembly configured to be coupled to the leaf spring and to an axle of the vehicle; a bumper coupled to the axle coupling assembly or to the frame member of the vehicle and disposed to have a center of the bumper forward and inboard of a center of the axle coupling assembly and to be engaged when the leaf spring is compressed to at least a preselected position; the leaf spring including tapered upper and lower surfaces in an axle seat portion; and the leaf spring including a front limb having a vertical spring rate and a length that extends forward from the axle seat portion to the front end and a rear limb having a vertical spring rate and a length that extends rearward from the axle seat portion to the rear end.