Combined oil ring assembly

Details Combined oil ring assembly Combined oil ring assembly

1989-11-15

1991-08-27

Shoap, Allan N.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277141, F16J 906

Patent

active

050428250

ABSTRACT:
A combined oil ring assembly including an expander and a pair of side rails. The expander is formed in the shape of a plurality of corrugations having a plurality of oil releasing bores and cut-out portions. The circumferential lengths of the oil releasing bores in the expander that are located at least between the opposed ends of the expander and the ear portions nearest to the opposed ends as well as between the nearest ear portions and the next ear portions are shorter than that of the other oil releasing bores.

REFERENCES:
patent: 2789872 (1957-04-01), Olson
patent: 2907615 (1959-10-01), Duesenberg
patent: 3353830 (1967-11-01), Bell
patent: 4722535 (1988-02-01), Maeda et al.

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