Patent ID: 7341272

Claim:
An expanding independent load suspension system comprising: (a) a primary box member fixably attached to a frame of a load carrying transport vehicle; (b) a pair of opposing primary sliding members capable of expansion and contraction, located below said primary box member; (c) a primary trunnion, housing a primary bushing and a primary journal; (d) a secondary box member, located below said primary journal, housing a pair of opposing secondary sliding members capable of expansion and contraction; (e) a secondary trunnion, housing a secondary bushing and a secondary journal; and (f) a walking beam, fixably attached to said secondary journal, having wheel mounting bushings positioned at both ends of said walking beam, wherein a group of two or more wheels attached to an axle are mounted on said wheel mounting bushings using a mounting bracket; whereby said primary bushing, said secondary bushing and said mounting bushings allow said primary journal to pivot about an axis that is parallel to the frame of a load carrying vehicle, and said secondary journal to pivot about an axis perpendicular to the same frame of the same load carrying vehicle, and said axle, having said group of two or more wheels attached thereto, to pivot about an axis parallel to the same frame of the same load carrying vehicle for the purpose of enabling said sliding members and wheel groups to independently pivot in response to changing road surface topography.