Patent ID: 6349952
Filing Date: 2002-02-26
Classification: B60G,B62D

Abstract:
A trailer comprising:(a) a frame having opposite first and second sides defining a width and including: (i) a generally longitudinally extending centrally positioned channel having first and second walls defining a width less than the width of the frame; (ii) a lateral support secured to said channel having a central main body section extending beneath said channel and having opposite first and second end each extending to a location adjacent a side of the frame and defining first and second suspension surfaces spaced above said central main body section; (b) a first axle pivotally connected to said lateral support adjacent said laterally spaced from said first wall of said longitudinal channel and extending outward to a first axle end spaced below said first suspension surface; (c) a second axle pivotally connected to said lateral support adjacent and laterally spaced from said second wall of said longitudinal channel and extending outward to a second axle end spaced below said second suspension surface; (d) first and second ground engaging wheel assemblies on the ends of said first and second axles; (e) first and second air springs interposed between the first and second axle ends and the first and second suspension surfaces, respectively, each air spring having a deflated position in which said associated axle is angularly inclined; and (f) a pneumatic system for selectively inflating and deflating said air springs to maintain the trailer substantially level and an elevated first position during transit and to allow the channel to be lowered to a second position close to the ground for loading and unloading.