Lightweight front frame assembly for a semitrailer and...

Details Lightweight front frame assembly for a semitrailer and... Lightweight front frame assembly for a semitrailer and...

B - Operations, Transporting

62

D

280/112, 26/187

B62D 53/08 (2006.01) B62D 21/02 (2006.01) B62D 53/06 (2006.01)

Patent

CA 1260037

ABSTRACT OF THE DISCLOSURE A front frame assembly for a semitrailer comprises essentially an aluminum weldment, except for a steel bumper which is riveted to it. The front frame assembly includes an upper coupler assembly fabricated from an aluminum ex- trusion with a planar base and first and second pairs of parallel flanges which extend generally perpendicularly from tile base. A pair of U-shaped aluminum channels are welded to the flanges to form a pair of hollow beams with generally rectangular cross-sections and a third U-shaped channel is welded between the other two channels. All of the major welds of the upper coupler assembly are located substantially along or toward the neutral bending axis of the upper coupler assembly to minimize bending stress to the welds.

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