Patent ID: 7565721
Filing Date: 2009-07-28
Classification: A44B,Y10T

Abstract:
1. A sandwich button comprising: a collet having a stem having a first end and a first annular flange extending about a peripheral portion of the first end and extending axially away therefrom, the stem having a generally cylindrical shape extending the length of the stem; 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 and a portion of the stem form an interference fit and define an interference zone having a non-circular cross-sectional shape, the interference zone extending from the lip along the length of the stem, the interference fit prevents relative rotational movement of the back member and the collet; and a shell member having a second attaching member extending axially away from a first surface of the shell member, the second attaching member directly contacting and engaging the first attaching member to prevent relative rotation of the back member and the shell member.