A tote box made from a foldable corrugated plastic sheet blank is disclosed having block insert locking tabs to hold block inserts within the tote box secure against movement without use of any fasteners or adhesives. The block inserts are removable for subsequent reuse or replacement....http://www.google.de/patents/US5522539?utm_source=gb-gplus-sharePatent US5522539 - Tote box with block insert locking capability
