US Patent 7258384 Folding ramp system

A pair of folding ramps each of which having a hinge connecting a first ramp section pivotally to a second ramp section. When in a fully unfolded state, structural support adjacent the hinge is provided by a tension cable assembly composed of a tension cable connecting to the first and second ramp sections and passing over an end of a mast, wherein the mast is connected with the hinge so as to be pivotal with respect to the first and second ramp sections. When in a fully folded state, the folding ramps are stored within a ramp storage receptacle of a tail gate.