Method for controlling end effect on anodes used for cathodic pr

Details Method for controlling end effect on anodes used for cathodic pr Method for controlling end effect on anodes used for cathodic pr

1981-01-13

1983-12-13

Tung, T.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204148, 204196, 204197, 204DIG7, C23F 1300

Patent

active

044203829

ABSTRACT:
`Necking` of elongated cathodic protection anodes is obviated or reduced by means of a nonconductive shield placed around the periphery of the anode, but spaced away from the surface of the anode at the end at which it is connected to a conductor cable. The gap between the shield and the electrode surface is generally in the range of 15-30% of the radius of curvature of the electrode surface.
The shield may extend over, but be spaced away from, the end surface of the electrode also.

REFERENCES:
patent: 644029 (1900-02-01), Cowper-Coles
patent: 1506306 (1924-08-01), Kirkaldy
patent: 2329961 (1943-09-01), Walker
patent: 2721172 (1955-10-01), Higgins et al.
patent: 2934485 (1960-04-01), Sabins
patent: 3182007 (1965-05-01), Hutchison et al.
patent: 3471395 (1969-10-01), Sumner
patent: 3513082 (1970-05-01), Beer et al.
patent: 4175021 (1979-11-01), Tatum et al.
patent: 4224126 (1980-09-01), Bidwell

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