05139634 is referenced by 22 patents and cites 14 patents.

This invention relates to a dual bed cathodic protection system with automatic controls and method of use utilizing an impressed cathodic protection anode assembly powered through a solar power supply in conjunction with a sacrificial cathodic protection anode assembly which is known in the prior art to use a corrosion element to emit the necessary electrical current to protect a structure assembly from the effects of corrosion. The dual bed cathodic protection system with automatic controls includes 1) a solar power supply to receive sun power from a solar panel; 2) a ground bed assembly which may either be a deep well or surface type; 3) a system automatic control assembly operable to control selected use of either an impressed or sacrificial protection anode assembly; and 4) a protected structure buried within the ground to receive an electrical current to prevent corrosion thereto.

Title
Method of use of dual bed cathodic protection system with automatic controls
Application Number
354835
Publication Number
5139634
Application Date
October 25, 1990
Publication Date
August 18, 1992
Inventor
Robert G Morris
Beaver
OK, US
Craig E Yates
Beaver
OK, US
Ronald L Carpenter
Beaver
OK, US
Agent
Phillip A Rein
Assignee
Colorado Interstate Gas Company
CO, US
IPC
C23F 13/00
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