Nitrided piston ring with outer layer on surface

Details Nitrided piston ring with outer layer on surface Nitrided piston ring with outer layer on surface

1985-02-27

1985-12-10

Ward, Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277224, 277235A, F16J 900, F02F 500

Patent

active

045574928

ABSTRACT:
A piston ring with a nitriding layer on entire surfaces thereof except an outer peripheral surface, and a plating or a spraying layer on the outer peripheral surface of the piston ring.

REFERENCES:
patent: 2905512 (1959-09-01), Anderson
patent: 4299401 (1981-11-01), McCormick
The Iron Age, "Case Hardening with Nitrides", Aug. 5, 1926, pp. 340 and 341.

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