Two-piece oil control ring

Details Two-piece oil control ring Two-piece oil control ring

1978-12-05

1980-10-07

Smith, Robert I.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

F16J 920

Patent

active

042264308

ABSTRACT:
A two-piece oil control ring including a parted or split rail ring and a spacer-expander is disclosed. The spacer-expander includes a plurality of circumferentially spaced, cylinder wall engaging segments. Pairs of the segments are alternately interconnected by a generally vertical spring element and the remaining segments are interconnected by box sections. The spring elements are each bifurcated and further include reverse bent humps and a top rail stop. Each box section includes a first, bifurcated, generally vertical leg extending axially from the bottom inner radial edge of the ring, a second, slotless horizontal portion which defines a rail seat and a third, generally vertical pressure leg portion.

REFERENCES:
patent: 2273691 (1942-02-01), Bowers
patent: 2591190 (1952-04-01), Olson
patent: 2635022 (1953-04-01), Shirk
patent: 2859079 (1958-11-01), Olson
patent: 3081100 (1963-03-01), Nisper
patent: 3124364 (1964-03-01), Burns et al.
patent: 3191947 (1965-06-01), Hamm
patent: 3191948 (1965-06-01), Hamm
patent: 3371938 (1968-03-01), Hamm et al.
patent: 3442519 (1969-05-01), Hamm et al.
patent: 3628800 (1971-05-01), Prasse
patent: 3741569 (1973-06-01), Mayhew
patent: 4053164 (1977-10-01), Saylor

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