Patent ID: 7624556

Claim:
A threaded deformed reinforcing bar for use in reinforced concrete, said bar comprising: a core, said core defining an outer surface and a central axis therethrough; at least two series of transverse ribs on said core, the ribs in each said series aligned and spaced longitudinally along said bar and separated by troughs, each said series separated transversely from adjacent series by a longitudinally extending gap, and wherein said at least two series of transverse ribs are each angled and aligned with adjacent series of transverse ribs to form a pattern of threads along said bar; and a longitudinally extending rib in each said longitudinally extending gap, each said longitudinally extending rib defining an outer surface wherein the distance between the central axis of said core and the outer surface of each said longitudinally extending rib is greater than the largest distance between the central axis of said core and the outer surface of said core, each said longitudinally extending rib being absent at least one end of said bar, whereby an internally threaded member having an internal thread sized to receive said transverse ribs can be selectively threaded onto said pattern of threads, which is formed by said transverse ribs, at said at least one end.