Shelving system and its production procedure

Claim 1

A rack for detachably mounting shelf members which may be moved horizontally into and out of an assembled position, said members having two vertical parallel side wall edge portions, said rack comprising at least four vertical uprights, each upright having adjacent side walls defining a generally V-shaped vertical portion with a vertical vertex line and a series of vertically spaced hook-shaped cutouts therein, each cutout being symmetrically disposed about the vertex line of said V-shaped portion and having a vertically oriented notch in each of said side walls, for receiving and supporting part of said vertical side wall edge portion of a shelf member to be mounted to said rack, a first pair of said uprights being disposed so that all four notches thereof are in a straight line parallel to one of said side wall edge portions, and a second pair of said uprights being disposed so that all four notches thereof are in a straight line parallel to the other of said side wall edge portions, whereby said notches act as glides for said members shelf members so that each shelf members can slide into and out of said rack but, once in the rack is held in said assembled position.