Safety eyewear (10) having interchangeable lens(es) (28,30) is provided. To provide for interchange of the lenses (28,30) in the frame (12), upper and lower frame members (32,34) are molded from a harder, more rigid plastic while lateral temple portions (20,22), and a central nose bridge portion (18)...http://www.google.fr/patents/US6969172?utm_source=gb-gplus-shareBrevet US6969172 - Safety glasses with flexible frame and interchangeable dual-lenses
Safety glasses with flexible frame and interchangeable dual-lenses
