Pivot construction

Claim 1

A pivotal construction for an articulated vehicle comprising two segments, one of which segments interconnects a pair of substantially parallel, horizontally disposed first and second arms and the other segment interconnects a second pair of substantially parallel, horizontally disposed, oppositely extending third and fourth arms formed on respective front and rear portions of such vehicle, said pair of third and fourth arms being vertically spaced from said pair of fist and second arms comprising: a member Having a part rigidly secured to said first arm and another part extending vertically from said first part defining a bearing surface, a bearing supported in said second arm having a bearing surface in mating engagement with said bearing surface of said first part, resilient means imposing a vertical load upon the engaged bearing surfaces, said bearing and second part having a substantially common vertical axis, a member having a part rigidly secured to said third arm and another part extending vertically from said third arm, and a bearing structure disposed in floating relation between said another part extending from said third arm, and said fourth arm, and permitting vertical movement between said third and fourth arms.