Patent ID: 7812704

Claim:
A fuse state indicator comprising: a fuse comprising a fuse body, a first ferrule coupled to one end of the fuse body, and a second ferrule coupled to an opposing end of the fuse body; at least one voltage sensitive element coupled to the surface of the fuse body, wherein the at least one voltage sensitive element is capable of undergoing at least one visible change upon being subjected to a threshold voltage; and a wire extending from the first ferrule to the second ferrule, wherein the wire is positioned on the surface of the fuse and wherein the wire is electrically coupled to the at least one voltage sensitive element, wherein the at least one voltage sensitive element detects a voltage applied to the wire; wherein the voltage sensitive element comprises a smart window comprising: a transparent lens; a first interlayer film adjacent to the transparent lens; a first liquid crystal film adjacent to the first interlayer film; a first conductive coating adjacent to the first liquid crystal film; a plurality of polymer dispersed liquid crystals adjacent to the first conductive coating; a second conductive coating adjacent to the plurality of polymer dispersed liquid crystals; a second liquid crystal film adjacent to the second conductive coating; a second interlayer film adjacent to the second liquid crystal film; and a backing layer adjacent to the second interlayer film.