Oil scraper piston ring assembly

Details Oil scraper piston ring assembly Oil scraper piston ring assembly

1984-10-29

1986-12-16

Ward, Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277143, 267 15, F16J 906, F16J 920

Patent

active

046291989

ABSTRACT:
An oil scraper piston ring assembly includes an oil scraper ring received in a piston groove and being in circular contact with a first side wall of the groove; and a spring ring received in the groove between the oil scraper ring and a second side wall of the groove. The spring ring has circumferentially distributed resilient tongues oriented alternatingly radially inwardly and radially outwardly. The spring ring has a radially outer circular part situated axially adjacent the oil scraper ring and a radially inner circular part bent with respect to the radially outer circular part and extending at least partially radially adjacent an inner periphery of the oil scraper ring. The oil scraper ring is a steel band ring of relatively small axial height, the spring ring is a resilient band ring also of relatively small axial height, and the oil scraper ring and the spring ring have approximately identical thicknesses of material.

REFERENCES:
patent: 2785028 (1957-03-01), Olson
patent: 2785030 (1957-03-01), Olson
patent: 2855254 (1958-10-01), Beck et al.
patent: 2859079 (1958-11-01), Olson
patent: 3195908 (1964-01-01), Hutto
patent: 3615098 (1971-10-01), Sugahara
patent: 4053164 (1977-10-01), Saylor
patent: 4090720 (1978-05-01), Morsbach et al.
patent: 4462602 (1984-07-01), Brauers et al.

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