Structural component for forming load supporting frames

Claim 1

A structural component for the construction and erection of load supporting frames, said structural component comprising an extruded member of indefinite length comprising a pair of outer limbs formed longitudinally at right angles to one another, a first inner limb formed longitudinally integrally on the inside of one of the outer limbs in spaced relationship from the inside of the other outer limb to form therewith a first longitudinally extending channel, and a second inner limb formed longitudinally integrally on the first inner limb in spaced relationship from the inside of said one outer limb to form therewith a second longitudinally extending channel located at right angles to said first channel, a selected limb of either of the pairs of limbs forming the respective channels projecting outwardly beyond the other limb of said pair, said one outer limb projecting in width beyond said other outer limb to provide an extended outer limb (6a) having a flange at its distal end, said flange extending longitudinally inwardly to form a third channel with said other outer limb and an additional limb formed longitudinally on said second inner limb in spaced relationship from said first inner limb to form a fourth channel therewith.