Pneumatic tire with electrically conductive cord extending between a bead portion and a tread portion of the tire

This invention relates to a pneumatic rubber tire which contains at least one electrically conductive cord extending between its electrically conductive wheel-rim mounting surface rubber component and its electrically conductive tread base layer rubber component or one or more intermediate electrically conductive rubber components therebetween to provide a path of least electrical resistance between the tire wheel-rim mounting surface and the tire tread base layer. An electrically conductive path is thereby provided. The electrically conductive cord is comprised of at least one electrically conductive metal filament spirally wound around a centrally disposed core of at least one organic fiber. The electrically conductive cord does not extend to, and therefore is exclusive of, an outer surface of the tire. The electrically conductive cord may also be comprised of an electrically conductive metal filament, electrically conductive carbon fiber, or their combination, spirally wound around a core of at least one organic fiber.