Marine propulsion device including cathodic protection

Details Marine propulsion device including cathodic protection Marine propulsion device including cathodic protection

1984-06-07

1985-10-29

Tung, T.

Chemistry: electrical and wave energy

Processes and products

Vacuum arc discharge coating

204148, 204286, 416 93A, 416244B, 416247A, 440 49, 440 78, C23F 1300

Patent

active

045499497

ABSTRACT:
The marine propulsion device lower unit includes a housing having a lower portion submerged in water and defining an internal passage communicating with the water. Corrosion protection for both internal and external parts of the lower unit is provided by a sacrificial, galvanic-type anode mounted on the submerged portion of the housing and including a first or outer portion having a surface exposed to water exterior to the lower unit and a second or inner portion having a surface exposed to water present in the passageway.

REFERENCES:
patent: 1842541 (1932-01-01), Cumberland
patent: 2666026 (1954-01-01), Gibbs
patent: 2732021 (1956-01-01), Taft
patent: 3169504 (1965-02-01), Gruber
patent: 3240180 (1966-03-01), Byrd
patent: 3330751 (1967-07-01), Warner
patent: 3660264 (1972-05-01), Schuller
patent: 3726779 (1973-04-01), Morgan
patent: 4140614 (1979-02-01), McKie
patent: 4146448 (1979-03-01), Nakano et al.
patent: 4196064 (1980-04-01), Harms et al.
patent: 4486181 (1984-12-01), Cavil

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