Patent ID: 8821698

Claim:
A vented multi purpose segmented Mixed Metal Oxide (MMO) coated impressed current cathodic protection anode assembly comprising: at least one anode segment having an exterior and an interior, each anode segment comprising: a titanium tube; ports through walls of the titanium tube; and external and internal MMO coating on the titanium tube; a wire connection anode section made from titanium and connected to an end of one of the at least one anode segment; the external and internal MMO coating on the wire connection anode section; a center necked-down portion of the wire connection anode section; a wire connector press fit into the center necked-down portion; a lead wire electrically connected to the wire connector; an isolation material filling the center necked-down portion of the wire connection anode section; the wire connection anode section includes hollow ends on each side of the center-necked down portion and the isolation material in the center necked-down section blocking fluid communication between ends of the wire connection anode segment a vent tube connecting the hollow ends of the wire connector anode section on each side of the center necked-down portion placing the hollow ends in fluid communication; threads in both ends of the at least one hollow vented Ti MMO anode segment and in both ends of the wire connection anode section, the threads left uncoated; an internally MMO coated threaded titanium joint connecting each of the at least one anode segment and connecting the wire connection anode section to an end one of the at least one anode segment, the threaded titanium joint providing electrical connectivity between each of the at least one anode segment and between the wire connection anode section and the end one of the at least one anode segment; a non-active pipe connected to the wire connection anode section opposite the at least one anode segment; the external MMO coating on the at least one anode segment in fluid communication with an atmospheric region sequentially through: the ports in the wall of the at least one hollow vented Ti MMO anode segment; the hollow interior of the at least one anode segment; the at least one anode segment closest to the wire connection anode section; the wire connection anode section passing by way of the vent tube; and through the non-active pipe to the atmospheric region; and the lead wire extending through the non-active pipe and electrically connected between the wire connector and a rectifier assembly.