Abstract: A stacking system consists of a tray-like component that accommodates articles in interior troughs and of a stacking component. The object is to provide a stacking system that can be adapted to different heights depending on the type of article being stored. The accommodating components can be stacked nested and the stacking components can be stacked nested. The top of an accommodating component engages the bottom of a stacking component and the top of each stacking component conforms to the bottom of each accommodating component. The distance between the top and bottom of each stacking component is independent of the height of any accommodating component.

Abstract: A collapsible shelf arrangement with at least two supporting panels or trays and two frame sections pivotable with respect to each other. A locking arrangement is provided for securing the panels or trays against automatic collapse. To collapse the shelf arrangement, one of the supporting panels or trays is lifted, whereas, to set up the shelf, another panel is lifted and positioned to automatically lock the entire arrangement.

Abstract: An improvement in collapsible receptacles including the provision of respective inwardly and outwardly directed projections on the base frame and sidewalls of the receptacle. The outwardly directed projection of the sidewall overlaps the inwardly directed projection of the base frame to maintain the receptacle in the assembled non-collapsed condition such that a tilting of the sidewalls is necessary to raise the sidewall. The overlapping projection on the sidewall also serves as a water shield for the joint between the frame and sidewalls.