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Electrode apparatus for cathodic protection

  • US 4,492,877 A
  • Filed: 07/26/1982
  • Issued: 01/08/1985
  • Est. Priority Date: 07/26/1982
  • Status: Expired due to Term
First Claim
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1. In a cathodic protection apparatus for a submersible metal unit subject to corrosion and including a submersible anode, a submersible reference electrode, and a current supply means connected between said anode and said metal unit and to said reference electrode to regulate the potential of said metal unit by maintaining the potential of said metal unit at a selected level relative to said reference electrode, the improvement comprising:

  • A metallic shield element mounted in close proximity to said reference electrode and said anode and connected to said metal unit to cause a first distance between said electrode and said anode to electrically simulate a second distance between said anode and a selected portion of said submersible metal unit, said second distance greater than said first distance, whereby said reference electrode can be mounted adjacent to said anode.

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