Shock resistant plastic containers with self-contained locking means

Claim 1

A SHIPPING AND STORING CASE COMPRISING AN OPEN TOP BOX HAVING A SUBSTANTIALLY FLAT BOTTOM WALL AND UPSTANDING PERIPHERAL SIDE WALL, SAID BOX BOTTOM WALL BEING SIZED AND SHAPED TO RECEIVE A FLAT SIDE OF A REEL THEREON IN SUBSTANTIALLY CONCENTRIC RELATION AND HAVING FOUR ROUNDED CORNERS EXTENDING BEYOND THE PERIPHERY OF THE REEL, A FITTED COVER FOR THE BOX OPEN TOP HAVING A SUBSTANTIALLY FLAT TOP WALL SHAPED TO CONFORM TO THE BOX BOTTOM WALL AND A DOWNWARDLY EXTENDING SIDE WALL TELESCOPINGLY ENGAGING SAID BOX SIDE WALL, SAID BOTTOM AND TOP WALLS IN EACH CORNER BEING FORMED WITH ALIGNED WELLS DEPRESSED INWARDLY TOWARD EACH OTHER FROM THE EXTERIOR SURFACES THEREOF, SAID WELLS HAVING ALIGNED OPENINGS THEREIN, THE OPENINGS IN SAID BOTTOM WALL WELLS BEING SHAPED AS DIAMETRIC SLOTS, SAID DIAMETRIC SLOTS IN OPPOSITE CORNERS BEING PARALLEL AND IN ADJACENT CORNERS BEING AT RIGHT ANGLES TO EACH OTHER FOR ROTATION SYMMETRY PROVIDING SELF INDEXING OF SAID COVER ON THE BOX, AND A ROTATABLE LATCH MOUNTED FOR ROTATION IN EACH OF THE TOP WALL WELL OPENINGS AND HAVING LATCHING MEANS CONFORMING TO SAID DIAMETRIC SLOT FOR ENTERING THEREIN WHEN IN ALIGNMENT THEREWITH FOR ROTATION TO AN ANGULAR SNAP LOCKING POSITION WITH RESPECT TO SAID SLOT, SAID ROTATABLE LATCH HAVING MEANS COACTING WITH COMPANION MEANS FORMED IN THE TOP WALL WELL FOR SNAP LOCKING THE ROTATABLE LATCH IN POSITION ALIGNING THE LATCHING MEANS WITH THE SLOT.