US Patent 9606372 Eyewear with multi-function insert chassis clips

An eyewear apparatus with interchangeable insert chassis components that may insert into a frame structure in accordance with a specific mechanical interlocking apparatus. In particular, the contour of the insert chassis may conform to the contour of a channel in the frame, and tabs or notches in the chassis insert may snap into a hole, tab, or indentation in the nose of the frame, and at either side of the frame near the temples, as described herein.