Heavy duty tire
AssigneeThe Goodyear Tire & Rubber Company
InventorsGayathri Venkataramani, Dale Eugene Wells
Life of this patent
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Abstract
A pneumatic tire construction is described suitable for severe loading conditions. The tire includes a bead portion further having an apex which extends radially outward of the bead core, and a first turn-up pad located adjacent said chafer, and a second turn-up pad located adjacent said first turn-up pad, wherein the first turn-up pad has a G′ less than the G′ of the second turn-up pad. Alternatively, the first turn-up pad may be located adjacent to the rim flange and the second turn-up pad may be located axially inward of the first pad. The second turn-up pad is preferably thicker and longer than the first turn-up pad.
Claims19
A pneumatic tire comprising a carcass, the carcass having one or more cord reinforced plies and a pair of bead portions, each bead portion having at least one annular inextensible bead core about which the cord reinforced plies are wrapped, a tread and a belt reinforcing structure disposed radially outward of the carcass, the bead portion further comprising an apex which extends radially outward of the bead core, and a chafer, the tire further comprising a first turn-up pad located adjacent said chafer, and a second turn-up pad located between the plies and said first turn-up pad, wherein the first turn-up pad has a G′ less than the G′ of the second turn-up pad.
A pneumatic tire comprising a carcass, the carcass having one or more cord reinforced plies and a pair of bead portions, each bead portion having at least one annular tensile member about which the cord reinforced plies are wrapped, a tread and a belt reinforcing structure disposed radially outward of the carcass, the bead portion further comprising an apex which extends radially outward of the bead core, and a chafer, the tire further comprising a first turn-up pad located adjacent said chafer, and a second turn-up pad located adjacent said first turn-up pad, wherein the annular tensile member has a width less than 3.2 inches.
A pneumatic tire comprising a carcass, the carcass having one or more cord reinforced plies and a pair of bead portions, a tread and a belt reinforcing structure disposed radially outward of the carcass, each bead portion having at least one annular tensile member about which the cord reinforced plies are wrapped, said one or more plies having a turndown portion which extends from the crown and axially inward of the annular tensile member, and a turnup portion which extends radially outward from the annular tensile member and axially outward of the annular tensile member, wherein the gauge between the turnup portion of the ply and the turndown portion of the ply is less than 1.8 inches.
Dependencies are inferred from the claim text.