Patent ID: 8783489

Claim:
A collapsible cargo container having an upper wall, a floor, first and second side walls, and first and second end walls, and where said container can assume an unfolded position and a collapsed position, comprising: an upper wall having an exterior surface and an interior surface, and including releasable catches on said interior surface for retaining first and second pivoting end walls; a first end wall pivotable against said interior surface of said upper wall and engagable with one of said releasable catches to secure said first end wall adjacent said upper wall, and a second end wall pivotable against said interior surface of said upper wall and engageable with one of said releasable catches to secure said second end wall adjacent said upper wall, and wherein the first end wall includes a door frame and at least one pivoting door; first and second side walls, each side wall having an upper section and a lower section pivotably connected at hinges and collapsible along said hinges into a folded configuration when said first and second end walls are engaged with said releasable catches; a ramp coupled to said door frame, said ramp pivoting with said door frame and secured by one of said releasable catches when said first end wall is secured against said upper wall; and wherein said door frame on the first end wall includes lifting pins that cooperates with corresponding lifting lugs to form a path for tensile lifting loads between vertical pairs of corner fittings; and wherein said ramp is wedge shaped and automatically moves out of its recess as it is pushed by the door frame when said container transitions to the collapsed position.