There is nothing in that part of the design that looks patentable to me Deejay except perhaps the height adjustment gearbox, and they didn't use that on the SB. The appearance cannot be patented, it can only be design-registered. I suspect that either Victa did not register its design, or SB took the view that they had made enough change to not infringe the Victa design. Generally, infringement of a registered design requires that the copy be literally identical to the registered design, not just similar to it or reminiscent of it.
