Importance

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Abstract

The present invention provides a sandwich button including: (1) a collet having a generally cylindrically shaped stem having at a first end a first annular flange extending about a peripheral portion of the first end and extending axially away therefrom; (2) a back member having opposed first and second surfaces, a first attaching member, and a centrally disposed through hole, the first surface of the back member abuts a surface of the first annular flange, an annular lip extends circumferentially about the through hole and axially away from the second surface of the back member, a portion of the lip forms an interference fit with a portion of the stem and defines an interference zone having a non-circular cross-sectional shape, the interference fit prevents relative rotational movement of the back member and the collet; and (3) a shell member having a second attaching member extending axially away from a first surface of the shell member, the second attaching member fixedly engaging the first attaching member to prevent relative rotation of the back member and the shell member.

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First Claim