US Patent 7705241 Coiled wire armored cable

The coiled wire armored cable (10) includes transmission wires (14) encased by an insulator (12). A solid protective wire (16) is spirally wound over the exterior of the insulator. The protective wire (16) is fabricated from a metal, such as steel or titanium material, and will have a gauge that prevents a rodent from chewing through the wire. The coils of the protective wire are spaced apart along the length of the cable. The spacing (a) of the coils will be less than the width of the teeth of the rodent so that the coils create a “fence” that prevents the rodent's teeth from contacting the insulator.