Eyeglass frames fabricated from shape-memory alloys which have optimized elastic properties, which exhibit a combination of shape-memory and optimized elastic properties, which utilize the shape-memory property of these alloys in fastening elements or which utilize the flexibility and fatigue resistance...http://www.google.fr/patents/US4772112?utm_source=gb-gplus-shareBrevet US4772112 - Eyeglass frame including shape-memory elements
