Interlocking cover and tray

Claim 1

In a collapsible, interlocking cover arrangement for a two-piece telescoping container, the combination of: (a) a tray member including a bottom wall and opposed pairs of side walls foldably joined to each other and to said bottom wall and upstanding from the latter to form a box-like structure open at the top; (b) certain of said tray member side walls including outer flange elements presenting downwardly facing abutments; (c) a cover member including a top wall and opposed pairs of first and second side walls foldably joined to each other and to said top wall and depending from the latter to form a box-like structure open at the bottom; (d) each of said cover member first side walls having triangular end portions at opposite ends thereof which are joined to the remaining portion along upwardly diverging fold lines; (e) each of said second side walls having foldably joined to opposite ends thereof corner connecting flaps for connecting said second side walls to adjacent ends of related first side walls and which each comprise: (i) a generally triangular first portion folded to lie against and be adhesively secured to the inner side of an adjacent triangular portion of a related first side wall to permit said cover to be collapsed by folding said triangular end portions of said first side walls along said diverging fold lines; (ii) a portion projecting upwardly from said triangular section and being free from attachment to said first side wall for engagement with the underside of said top wall when said cover is in erected condition; (iii) a locking tab foldably joined to a lower edge of said triangular portion and being optionally foldable on to the inner side thereof for presenting an upwardly facing abutment for engagement with a corresponding downwardly facing abutment on said tray member to provide an optional interlocking connection between said members.