Side and gap sealed oil ring

Details Side and gap sealed oil ring Side and gap sealed oil ring

1995-02-15

1996-10-15

DePumpo, Daniel G.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277140, 277193, 277197, F16J 924

Patent

active

055646999

ABSTRACT:
An oil control ring assembly having a sealing ring and a scraping is disposed within a groove in a piston. The scraping ring assembly has a scraping end portion and spaced apart ends defining a gap. The sealing ring has a sealing end portion and mated spaced apart radially stepped ends defining a stepped gap. The stepped gap on the sealing ring is offset from the gap on the scraping ring. A spring positioned between an inner wall of the groove and the scraping ring biases the scraping ring at a specified tension. An alignment wire maintains misalignment between the stepped gap and the gap.

REFERENCES:
patent: 1560818 (1925-11-01), Houldsworth
patent: 2837386 (1958-06-01), Mayfield
patent: 3628800 (1971-12-01), Prasse
patent: 4011030 (1977-03-01), Staebler et al.
patent: 4421328 (1983-12-01), Thurston et al.
patent: 4473232 (1984-09-01), Umeha et al.
patent: 4629200 (1986-12-01), Ruddy
patent: 4767123 (1988-08-01), Kiese
patent: 5251915 (1993-10-01), Meernik
"Study of Transient Oil Consumption of Automotive Engine", Paper No. 892110, T. Inoue et al., Toyota Motor Corp., pp. 59-65 (no date available) .

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