US 7,320,350 B2
Sidewall reinforcing layer for pneumatic tires
Richard J. Wright, Wadsworth, Ohio (US)
Assigned to Bridgestone Firestone North American Tire, LLC, Nashville, Tenn. (US)
Filed on Jul. 08, 2005, as Appl. No. 11/177,579.
Prior Publication US 2007/0006958 A1, Jan. 11, 2007
Int. Cl. B60C 15/00 (2006.01); B60C 9/00 (2006.01)
U.S. Cl. 152—539  [152/543; 152/555] 20 Claims
OG exemplary drawing
 
1. A pneumatic tire, comprising:
a pair of annular beads defining a bead height;
a radial carcass ply extending between the beads;
a tread disposed circumferentially around the carcass ply, a center line of the tread defining an equatorial plane of the tire;
a pair of sidewalls extending from the tread to the beads; and
a first sidewall reinforcing layer, including one or more adjacent corded layers disposed between the carcass ply and a first sidewall of the pair of sidewalls, each of the one or more adjacent corded layers extending from a lower edge positioned axially outward of the radial carcass within one bead height of a highest extent of one annular bead of the pair of annular beads and at least one of the one or more adjacent corded layers extending to a top edge of the first sidewall reinforcing layer located at or above, in a radial direction, a point of maximum section width of the tire,
wherein the first sidewall reinforcing layer has a different thickness at the lower edge than at a top edge.