Two piece ring with finger grip groove and method of manufacture

Abstract

A method of making a composite ring is provided, including the steps of manufacturing an outer ring portion having an inwardly opening outer ring portion concave recess; manufacturing an inner ring portion having an outwardly opening circumferential inner ring portion concave recess; fitting the inner ring portion inside the outer ring portion; and forcibly radially expanding the inner ring portion to fit into the outer ring portion concave recess. A composite ring is provided, including an outer ring portion having an inwardly opening outer ring concave recess; and an inner ring portion having an outwardly opening circumferential inner ring portion concave recess fitted inside the outer ring portion and forcibly radially expanded to fit into the outer ring portion concave recess. The inner ring portion inward surface preferably includes a circumferential skin gripping groove.

Dependencies are inferred from the claim text.