Patent ID: 7918468

Claim:
A truck frame and attachment assembly for a vehicle with a cab, and an original frame, said original frame with a back end and a front end, with said cab positioned on said front end of said frame, with a left original frame member and a right original frame member and an original rear axle and wheel set with a left original rear wheel and spring and a right original rear wheel and spring, for adding load carrying capacity without additional stiffness to said vehicle, the frame and attachment assembly comprising: an extra frame set with a left side frame member and a right side frame member, configured for attachment to the top of said corresponding left original frame member and right original frame member, said extra frame set attached to the top of said original frame's back end between said original rear axle and said cab an extra axle support assembly with a left and right support assemblies, attached to said left and right side frame member near an extra frame back end, said left and right extra axle support assembly attached to and depending from said left and right side frame members and supporting an extra axle and extra left wheel and extra right wheel set near the bottom of said left and right extra axle support assembly; the extra axle pivotally attached to said extra frame set with an extra left and extra right wheel, said extra axle pivotable relative to said extra frame set so that its position relative thereto may be adjusted; a primary set of air bags for support of said left original rear wheel and said right original wheel, with said airbags attached to said extra frame set at one end, and to said original axle at a second end, with each of said primary air bags for said original rear wheels configured for pressure adjustment by a flow of air to each of said primary set of air bags; and an extra set of air bags for said left extra wheel and said right extra wheel attached at one end to said extra frame set and at a second end to said extra axle, with each air bag configured for pressure adjustment by a flow of air to each of the said extra set of air bags, with said air bags adjustable with said extra frame set resulting in a vehicle with an extra frame attached to an original frame, with said extra frame set including an extra axle, wheels and air bag suspension supporting said extra axle.