Container cover locking arrangement

Claim 1

A self-contained, collapsible, one-piece container which can be assembled and locked without requiring outside securing means, said container being formed from a unitary blank of foldable sheet material, such as paperboard, and comprising: (a) a bottom panel having opposed outer side and end panels foldably joined to side and end edges thereof and upstanding therefrom to form therewith a tray-like body structure; (b) a pair of separate trapezoidal-shaped top panels foldably joined to upper edges or respective end panels and disposed to extend inwardly therefrom in generally co-planar relation with each other; (c) said top panels having foldably joined to and depending from opposite side edges thereof inner side panels disposed in face-to-face relation with inner surfaces of said outer side panels and forming with said top panels a cover structure; (d) two of said inner side panels each presenting a lock tab receiving opening adjacent an upper edge thereof; (e) said outer side panels each having projecting from an upper edge thereof a lock tab adapted for insertion with an aligned aperture of a related inner side panel of said cover structure; (f) each of said outer side panels presenting a pair of downwardly diverging fold lines which allow said outer side panel to be deflected outwardly to permit said body structure lock tabs to be readily inserted into said cover structure aperatures.