Abstract: The threaded deformed reinforcing bar is used in concrete construction and may be easily connected to other threaded deformed reinforcing bars by an internally threaded coupler. The threaded deformed reinforcing bar has a continuous spiral thread upon at least a portion of its length which engages the internally threaded coupler. The continuous spiral thread upon the deformed reinforcing bar is formed by eliminating portions of longitudinal ribs that are formed upon the reinforcing bar during manufacturing. This process for forming the threaded deformed reinforcing bar is less expensive than conventional processes.

Abstract: The threaded deformed reinforcing bar is used in concrete construction and may be easily connected to other threaded deformed reinforcing bars by an internally threaded coupler. The threaded deformed reinforcing bar has a continuous spiral thread upon at least a portion of its length which engages the internally threaded coupler. The continuous spiral thread upon the deformed reinforcing bar is formed by eliminating portions of longitudinal ribs that are formed upon the reinforcing bar during manufacturing. This process for forming the threaded deformed reinforcing bar is less expensive than conventional processes.

Abstract: The present invention related to connecting two reinforced steel bars of the same or different sizes which are placed end to end. The connector requires bars having the same diameters to be hot rolled with an identical rib patterns on each bar. The connector, while gripped on each of the opposed bars with end nuts, has specially designed grooves to fit on rib patterns of the bars and creates an interlocking force between the connector and the bars. Thread bars are good example of the hot rolled bars with identical rib patterns described in this invention. The thread bars can use this connector as an alternative to internally thread couplers generally used with the bars.