CHICAGO--(BUSINESS WIRE)--Riverbend Industries Inc. announced today that it has sold Carlson Acquisition Company (“Carlson”), its Tulsa, Oklahoma-based flange-making subsidiary, to an affiliate of the Zink Family Office, also headquartered in Tulsa. Zink Industrial designs and manufactures advanced combustion and environmental solutions for process industries. Riverbend was committed to finding a strong long-term home for Carlson, and the Zink Family Office provided that fit. The divestiture al