A modular shelving system has a vertical stanchion for supporting load-bearing blocks. One end of each block fits into a T-shaped channel of the stanchion. A self-tapping screw threaded into the block engages the back wall of the channel and forces the block against the shoulders at the mouth of the...http://www.google.fr/patents/US5605238?utm_source=gb-gplus-shareBrevet US5605238 - Shelving system
