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 |
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.
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