Chemistry: electrical and wave energy – Processes and products – Vacuum arc discharge coating
Patent
1985-02-06
1987-09-08
Tung, T.
Chemistry: electrical and wave energy
Processes and products
Vacuum arc discharge coating
204148, 285231, C23F 1300
Patent
active
046922318
ABSTRACT:
According to the present invention a cathodic protection system for metal piping systems and fittings, therefore, is possible which is easy to install and manufacture. The system for fitting uses a unique sacrificial washer or sacrificial nut installed on the bolts used to fasten the fitting and includes a nonsacrificing portion to maintain the mechanical connection during and after depletion of the sacrificing metal. A unique ring anode is also taught which is secured to the bellmouth of a section of pipe to provide an extension thereof which can be factory or field installed. Preferrably each anode is designed to protect two connected pipe sections or a pipe section and fitting.
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