Patent attributes
An expandable cargo box assembly for mounting on a side wall section of a cargo bed of a pickup truck includes a base member for attaching the expandable cargo box assembly to the side wall section of the cargo bed, the base member having the form of an outer wall plate. Opposite the outer wall plate is an inner wall plate, the inner wall plate being displaceable from a first position to a second position, the first position defining a collapsed state, and the second position defining a deployed state. The outer and inner wall plates have operably associated therebetween a folding floor assembly, and the outer wall plate supports a forward folding wall and a rearward folding wall. Upon expanding the expandable cargo box assembly to a deployed state, the folding floor assembly and the forward and rearward folding walls are arranged to define an enclosure for receiving cargo.