Patent ID: 6868878

Claim:
A pneumatic tire, comprising: a tread cap rubber defining the tread of the tire, said tread cap rubber comprised of an electrically conductive rubber material; a tread base rubber disposed radially inside said tread cap rubber, said tread base rubber comprised of an electrically insulating rubber; a pair of nonconductive sidewall portions; a pair of bead bundles; a carcass extending between said pair of bead bundles and being wrapped around each said bead bundle, said carcass being constructed from a first electrically conductive material; a best cushion section disposed radially outside said carcass, said belt cushion section comprised of outer insulating portions separated circumferentially by an inner conducting portion; and at least one belt layer disposed radially outside of said belt cushion section but radially inward from said tread base rubber, said at least one belt layer being constructed from a second electrically conductive material; wherein said tread cap rubber also defines a first conducting bridge extending radially inward from said tread cap rubber, through said tread base rubber, so as to provide an electrically conductive path to said at least one belt layer and wherein said inner conducting portion is formed from said first and second electrically conductive materials from said carcass and said at least one belt layer, which connect so as to provide an electrical connection between between said carcass and said at least one belt layer.