Patent ID: 6491076
Filing Date: 2002-12-10
Classification: B60C,Y10T

Abstract:
A pneumatic tire having a tread area and a carcass structure including two bead areas, at least one cord-reinforced elastomeric ply extending through sidewalls between the bead areas and the tread area, and a belt structure between the tread area and the carcass structure; the tire characterized in that:each bead area contains a triangular shaped bead forming a bead interior side, a bead base, and a bead outer side; the at least one ply forms a ply line extending radially outward from each bead area through the sidewalls, and across the tread area radially inward of the belt structure, the plyline extending radially inward around the triangular bead first passing along the bead interior side, then passing axially outward along the bead base, and then extending radially outward along the bead outer side; the plyline along the bead base forms an angle &mgr; to the axial direction wherein the angle &mgr; opens axially and radially outward and is in the range of 0Â° to 15Â°, and the plyline along the bead outer side forms an angle &bgr; to the bead base wherein the angle &bgr; opens axially and radially outward and is in the range of 55Â° to 65Â°; and the plyline in the sidewalls extends radially outward from each bead area forming an angle &phgr;â€² to the axial direction wherein the angle &phgr;â€² opens radially outward and is in the range of 80Â° to 100Â° with respect to the axial direction.