US Patent 11920853 Sheathed fiberglass heater wire

1. An apparatus is disclosed. The apparatus includes a resistive wire having a circumference. The apparatus further includes a first fiberglass layer disposed about the circumference of the resistive wire and along a length of the resistive wire. The apparatus further includes a second fiberglass layer. The apparatus further includes a third fiberglass layer, the second fiberglass layer disposed between the first fiberglass layer and the third fiberglass layer, the third fiberglass layer forming an outer layer and surrounding the second fiberglass layer.