Oil control ring spacer-expander with improved slip latch

Details Oil control ring spacer-expander with improved slip latch Oil control ring spacer-expander with improved slip latch

1976-09-08

1978-09-05

Aegerter, Richard E.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 9, 277155, 277218, F16J 906, F16J 918

Patent

active

041114370

ABSTRACT:
In a parted spacer-expander for a piston oil control ring of the type which includes an array of alternating inner and outer crowns connected by generally diverging spring legs and a support pad extending radially from each inner crown and connected thereto by a pad leg, an improved slip latch comprising a curved rod having a substantially D-shaped cross section and having a radius of curvature equal to or less than the free-state radius of curvature of the spacer-expander. One end of the latch extends through at least one leg opening formed between the spring legs and pads adjacent the expander ends and is formed with a stop having an axial dimension which prevents passage through the leg openings. The other latch end extends over an arc of at least seventy-five degrees through a plurality of leg openings in the opposite expander end and is free to slide through the leg openings. The free latch end terminates in an inwardly directed beveled face to permit the free end to ride over the edges of the leg openings during sliding motion therethrough.

REFERENCES:
patent: 2893798 (1959-07-01), Olson
patent: 3099455 (1963-07-01), Mayfield
patent: 3124364 (1964-03-01), Burns et al.
patent: 3695622 (1972-10-01), Davis
patent: 3834716 (1974-09-01), Okada

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