Importance

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Abstract

In a parted corrugated spacer-expander for use in a piston oil control ring of the type which includes a circumferential series of alternating inner and outer crowns successively connected by radially diverging spring legs having oil drain openings formed therein, an improved slip latch comprising a curved rod having a radius of curvature equal to or less than the free-state radius of curvature of the expander. One end of the latch extends through at least one leg opening adjacent one expander end and terminates in 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.

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First Claim