Sidewall reinforcing layer for pneumatic tires
First Claim
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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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Abstract
A pneumatic tire may include a floating reinforcing layer disposed between a body ply and the sidewall of the tire. The reinforcing layer may extend from a point beneath the rim flange of the wheel to a point just above or below the maximum section width of the tire. By adding stiffness to the sidewall region at and above the rim, the reinforcing layer enhances the durability of tire without sacrificing ride comfort.
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Citations
20 Claims
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1. A pneumatic tire, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A pneumatic tire, comprising:
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a pair of annular beads having 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
means for reinforcing at least one sidewall of the pair of sidewalls in an area near one bead of the pair of annular beads, the means for reinforcing including one or more adjacent corded layers being disposed between the carcass ply and a first sidewall of the pair of sidewalls, and 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 of the plurality of beads and at least one of the one or more adjacent corded layers extending to a top edge of the means for reinforcing located at or above, in a radial direction, a point of maximum section width of the tire.wherein the means for reinforciun has a different thickness at the lower edge than at a top edge.
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Specification