Piston and oil control ring therefor

Details Piston and oil control ring therefor Piston and oil control ring therefor

1979-01-15

1986-04-29

Ward, Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

267 15, F16J 912

Patent

active

045852375

ABSTRACT:
A piston having a ring groove therearound has a three part oil control ring in the groove. The ring includes an axially and radially corrugated expander and two flat annular rails retained by the sides of the groove. The radial wall thickness of the rails is no more than 3% of the diameter of the piston; and the radial wall thickness of the expander is no more then 4.7% of the diameter of the piston.

REFERENCES:
patent: 1523828 (1925-01-01), Wilson
patent: 2293450 (1942-08-01), Wilkening
patent: 2656230 (1953-10-01), Phillips
patent: 2854301 (1958-09-01), Lutz
patent: 2904377 (1959-09-01), Endres et al.
patent: 2970022 (1961-01-01), Anderson
patent: 3522949 (1970-08-01), Wells
patent: 3814444 (1974-06-01), Johnson et al.
Engineer's Handbook--of piston rings--Ninth Edition Koppers Company, Inc., Metal Products Division, Baltimore, Maryland 21203--Copyright 1975, pp. 19, 150 and 715 and 142.

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