US Patent 7628563 Fitting for a T-slot structure

A unitary fitting for mating with and coupling a plurality of T-slot structures. The fitting comprises at least two sections to mate with the T-slot structures, with each of the sections having a first end, a second end, an outer surface circumferentially surrounding said T-slot structure, and an inner surface being capable of mating with one of said T-slot structures. the inner surfaces has at least one rail that extends inwardly into a recess of the T-slot structures. The fitting is formed of one piece construction.