Patent ID: 7588156

Claim:
Collapsible polymeric material container for transport and storage of goods, which container includes a carrying base part, a plurality of collapsible side walls and a lid, whereby said side walls are movably attached to said base part by means of lower hinge members, said side walls being arranged as a first and a second side wall being arranged parallel to each other and a third and a fourth side wall being arranged parallel to each other and adjacent to the first and the second side walls wherein said first and second side walls are moveably attached to an upper frame member via upper hinge members, said first and second side wall further being parted into each an upper and a lower section via a horizontal folding line, an upper edge of said third and fourth side walls being each provided with at least one locking lip, said locking lips limiting the outwards movement of said third and fourth side walls by interacting with an inner edge of said upper frame member, said third and fourth side walls being provided with at least one locking pin which each are inserted into one matching hole arranged on the inside of the upper rim, said hole and locking pin being arranged so that the locking pin and its matching hole will transfer loads exerted on the upper frame, wherein the lid is provided with an inner rim, said inner rim interacting with said inner edge of the upper frame member said inner rim further interacting with the locking lips thereby limiting inward movement of the third and fourth side walls while said lid is arranged on said collapsible container whereby undesired collapsing of said collapsible container is prevented while said lid is properly arranged on said container, the first and second side walls being each provided with clamping hooks arranged at a vertical edge, and the third and fourth side walls being each provided with clamping holes at positions matching the position of the clamping hooks when all side walls are erected, whereby said clamping hooks and said clamping holes are engageable so as to prevent unauthorized access to the contents of said container responsive to attempts of prying adjacent side walls apart.