US Patent 7954256 Interchangeable footwear system and method

A footwear system (S) and corresponding methods (M1) and (M2) for providing a plethora of footwear fashion options via a plurality of interchangeable components, the interchangeability of which being facilitated by structurally stable quick-coupling and quick-decoupling techniques. The system (S) includes a plurality of interchangeable uppers (100), a plurality of interchangeable heels (200), and a quick-release device (300) for easily and selectively engaging a heel (200) of the plurality of interchangeable heels (200) with an upper (100) of the plurality of interchangeable uppers (100). The quick-release device (300) has a safety feature for providing structural stability.