Patent ID: 8490806

Claim:
In combination: a) a chassis comprising: a first frame; and a first twist lock assembly comprising a shaft with an enlarged head with a width and a length dimension, the enlarged head mounted to the first frame for guided movement around a first axis; and b) a cargo carrying container mounted in an operative position upon the chassis, the cargo carrying container comprising: a second frame; and a second twist lock assembly that cooperates with the first twist lock assembly in a manner whereby the cargo carrying container is selectively: a) maintained against separation from the chassis where the first and second twist lock assemblies interact; and b) allowed to separate from the chassis where the first and second twist lock assemblies interact, the second twist lock assembly comprising a slide plate with an aperture through which the enlarged head is passed in an axial direction with the enlarged head in an assembly/disassembly orientation; the first twist lock assembly and slide plate configured so that the enlarged head in the assembly/disassembly orientation moved relative to the slide plate in a first axial direction deflects the slide plate from a first position to allow the enlarged head to pass through the slide plate aperture, wherein at least one of: a) with the cargo carrying container in the operative position and the enlarged head passed through the slide plate aperture the enlarged head is movable around the first axis from the assembly/disassembly orientation into a holding orientation, wherein the enlarged head is blocked from being withdrawn from the slide plate aperture by the slide plate; and b) as an incident of the cargo carrying container being moved from a separated position into the operative position the enlarged head initially deflects the slide plate from the first position into a second position to allow the enlarged head to pass through the slide plate aperture, whereupon the enlarged head can be blocked by the slide plate from being withdrawn from the slide plate aperture, wherein with the cargo carrying container in the operative position and the enlarged head passed through the slide plate aperture and in the holding orientation, the enlarged head is blocked from being withdrawn from the slide plate aperture by the slide plate at diametrically opposite locations.