Oil ring with coil expander

Details Oil ring with coil expander Oil ring with coil expander

1984-06-11

1985-06-11

Ward, Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277163, 277224, F16J 906, F16J 920

Patent

active

045224129

ABSTRACT:
A piston ring comprising a generally I shaped oil-scraping oil ring which has upper and lower side rails and a considerably thin web connecting the side rails, and which has an outer peripheral channel for receiving scraped oil and an inner peripheral groove for receiving coil expander, and an annular coil expander which is located in the inner peripheral groove so that the coil expander bears against the upper and lower side rails substantially at two points, the coil expander being spaced from the web of the oil ring with a slight gap therebetween.

REFERENCES:
patent: 2631908 (1953-03-01), Teetor
patent: 3066943 (1962-12-01), Brenneke
patent: 3467397 (1969-09-01), Sugahara
patent: 3795403 (1974-03-01), Sugahara
patent: 4045036 (1977-08-01), Shunta
patent: 4085490 (1978-04-01), McCormick et al.
patent: 4161321 (1979-07-01), Hendrixou et al.
patent: 4214762 (1980-07-01), McCormick et al.

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