Patent ID: 7036834

Claim:
An over axle suspension system for a single axle light duty trailer, said suspension system comprising: two parallel angle iron frame rails, open to the top and inside and spaced apart wide enough to receive a box frame of said trailer and bolted to each side of said box frame; two control arm brackets suspended from the under side of said frame rails parallel to each other with control mounting notches facing rearward; two axle stop brackets suspended from the underside of said frame rails at a distance far enough behind said control arm brackets as to be directly over the proposed axle location, said axle stop brackets having axle stops attached to their bottom surfaces; two air spring mounting brackets suspended from the underside of said frame rails at a distance far enough behind said axle stop brackets as to allow standard air springs to clear the axle of said trailer; two shock absorber brackets suspended from the under side of said frame rails at a distance far enough behind said air spring mounting brackets to allow shock absorbers to clear said air springs; two control arms having front ends and rear ends with an axle alignment feature which can receive an axle centering dowel, with said front ends pivotally mounted in said control arm brackets with polyurethane bushings and said rear ends pivotally mounted to bottom ends of said two shock absorbers which have top ends pivotally mounted to said shock absorber brackets, allowing said control arms to be essentially parallel with the bottom of said trailer when at rest; two air springs mounted between said air spring mounting brackets and a top surface of a top plate of said control arms at air spring mounting holes; two sets of two u-bolts overarching said axle of trailer and connecting said axle to tops of control arms; and two cross-braces connecting and stabilizing said frame rails and attached at tabs located on the leading inside top and bottom edges of said control arm brackets.