Drive-in pallet rack

Claim 1

A RACK STRUCTURE OF A TYPE HAVING UPRIGHT SKELETAL WALLS SPACED PARALLEL TO EACH OTHER TO FORM AISLES THEREBETWEEN, SAID WALLS HAVING UPRIGHTS WHICH HAVE CONNECTED THERETO RAILS SUPPORTS WHICH IN TURN HAVE CONNECTED THERETO LOAD SUPPORT RAILS EXTENDING PARALLEL TO SAID WALLS, EACH CONNECTION BETWEEN A RAIL SUPPORT AND A RAIL COMPRISING, SAID RAIL SUPPORT HAVING TWO SPACED VERTICAL WALL PORTIONS EXTENDING FROM ITS UPPER SURFACE BETWEEN WHICH A RAIL IS POSITIONED, SAID RAIL BEING PROVIDED WITH A PLURALITY OF HOLES SPACED FROM EACH OTHER IN ROWS AT THE SAME VERTICAL LEVEL LONGITUDINALLY ALONG THE RAIL, ONE OF SAID WALL PORTIONS HAVING A PROJECTING MEMBER DIRECTED TOWARD THE OTHER SAID WALL PORTION TO ALIGN WITH ONE OF SAID HOLES ON ONE SIDE OF THE RAIL POSITIONED BETWEEN THE TWO WALL PORTIONS, THE OTHER SAID WALL PORTION SUPPORTING A RETRACTABLE LATCH WHICH IS ALIGNED WITH ONE OE SAID HOLES ON THE OPPOSITE SIDE OF SAID RAIL, SAID LATCH BEING EXTENDABLE TO ENGAGE THE HOLE IT IS ALIGNED WITH WHILE THE PROJECTING MEMBER IS ENGAGED WITH THE HOLE IT IS ALIGNED WITH TO THEREBY FORM THE CONNECTION BETWEEN THE RAIL SUPPORT AND THE RAIL.