Patent ID: 7740306

Claim:
A utility trailer structural panel, comprising: a utility trailer panel skin having a generally planar configuration and defining an inner surface and an outer surface; a plurality of generally parallel elongate stiffeners each having a central flange spaced from said sheet skin portion and a web fixedly secured to the central flange and extending from each outer side of the central flange toward the sheet skin portion; each of said elongate stiffeners aligned to be substantially transverse to a longitudinal axis of said utility trailer; a mounting flange fixedly secured to and extending laterally from said web, each of the mounting flanges having a free edge; and a tubular bead fixedly secured to and extending along a portion of the free edge of each mounting flange for reinforcing said stiffeners, wherein the tubular beads are each of an elliptical cross section with a minor axis that is at least about 20 percent of the major axis.