Three-piece oil-ring with a slot

Details Three-piece oil-ring with a slot Three-piece oil-ring with a slot

1987-05-18

1989-01-17

Shoap, Allan N.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

267 15, 277141, 277160, 277215, 277216, F16J 906, F16J 920

Patent

active

047983914

ABSTRACT:
A three-piece oil-ring comprises a pair of side rails and an expander disposed between the side rails. The expander extends in a circumferential direction and has waves in a radial direction. At both sides of radially inner portions of the expander side rail engaging portions protrude in an axial direction and extend in a circumferential direction. A slot in the expander is provided between the paired side rail engaging portions. The slot may have a rib at a longitudinally central portion of the slot. Due to the slot and the rib, the oil-ring can have an appropriate rigidity, thereby decreasing oil consumption.

REFERENCES:
patent: 2025334 (1935-12-01), Teetor
patent: 2112425 (1938-03-01), Nixon
patent: 2789872 (1957-04-01), Olson
patent: 3153540 (1964-10-01), Naperala et al.
patent: 3338582 (1967-08-01), DeBruin
patent: 3346252 (1967-10-01), Saylor

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