Patent US 6,329,931

Loading bay dock control apparatus 28 includes a co-ordinator circuit 30 and activators 32 for each of the functions of the loading bay dock. Individual manual controls 38 can operate individual functions. In addition, a master control 40 operates to cause the co-ordinator 30 to instruct activators 32 to operate in accordance with a pre-arranged sequence in order to open or close the dock in a safe manner.