Abstract: A rectangular stackable container, such as a tote box, having a lid or cover which is hingedly-attached at the upper rim area along one or both sides of the bin portion of the container. The rim area of the bin portion contains a rim-reinforcing wire, portions of which are exposed and releasably engaged by novel hinge means which are fastened to the lid and support the lid recessed slightly below the level of the rim when the lid is in closed position. The hinge means preferably are extruded from polyvinyl chloride.

Abstract: Assemblies of sheets of corrugated plastic board and molded plastic interlock elements providing useful products such as containers. Sheets of corrugated plastic board are interlocked with one another by means of molded plastic connector pieces or strips having receptor slots containing spaced lock ramps. The slots receive a uniform edge of a sheet of corrugated plastic which is provided with spaced slits aligned with the spaced lock ramps. Entry of the sheet edge into the connector slot causes the spaced lock ramps to compress the edge until the aligned slits pass thereover, and the "memory" of the corrugated plastic board causes the edge portion thereof, beyond the slit, to spring back to its original thickness and thereby lock the edge of the plastic board within the slot of the molded plastic connector.

Abstract: A reusable, collapsible, rectangular hinged container comprising a novel foldable wall section or sleeve having strong, rigid weather-resistant wall panels and a pair of strong rigid, weather resistant top and bottom cap members, each of which overlaps with and supports a marginal area of the open wall section or sleeve to form the container. The wall section or sleeve contains a plurality of novel strong, rigid, panel-supporting hinge members which enable the sleeve to be folded to a flat condition in which it is completely receivable within and between the cap members to provided a compacted container to be returned to a supplier for reuse.