Patent classifications
B60C9/07
Tire with carcass reinforcers, hooping reinforcers, and working reinforcers constituting a triangulation
A passenger vehicle tire having hooping layer (71) that has a force at break FR per mm of axial width of the hooping layer at least equal to 35 daN/mm and has a secant extension modulus MA at least equal to 250 daN/mm, for an applied force F equal to 15% of FR. Working reinforcement (6) comprises a single working layer (61) the working reinforcers of which form, with the circumferential direction (YY′), an angle A.sub.T at least equal to 30° and at most equal to 50°. The carcass reinforcers of the at least one carcass layer (81) form, with the circumferential direction (YY′) and in the equatorial plane (XZ), an angle A.sub.C2 at least equal to 55° and at most equal to 80° and having an orientation opposite of that of angle A.sub.T of the working reinforcers so that the carcass reinforcers and the working reinforcers constitute a triangulation.
Tire with carcass reinforcers, hooping reinforcers, and working reinforcers constituting a triangulation
A passenger vehicle tire having hooping layer (71) that has a force at break FR per mm of axial width of the hooping layer at least equal to 35 daN/mm and has a secant extension modulus MA at least equal to 250 daN/mm, for an applied force F equal to 15% of FR. Working reinforcement (6) comprises a single working layer (61) the working reinforcers of which form, with the circumferential direction (YY′), an angle A.sub.T at least equal to 30° and at most equal to 50°. The carcass reinforcers of the at least one carcass layer (81) form, with the circumferential direction (YY′) and in the equatorial plane (XZ), an angle A.sub.C2 at least equal to 55° and at most equal to 80° and having an orientation opposite of that of angle A.sub.T of the working reinforcers so that the carcass reinforcers and the working reinforcers constitute a triangulation.
Motorcycle tire
A motorcycle tire includes a tread portion, a pair of sidewall portions, a pair of bead portions, a toroidal carcass extending between the pair of bead portions, and a belt layer and a band layer disposed outwardly in the tire radial direction of the carcass in the tread portion. The carcass includes a plurality of carcass cords. The band layer includes a jointless band ply having a band cord wound spirally at an angle equal to or less than 5 degrees with respect to a tire circumferential direction. The belt layer includes a plurality of belt cords arranged in a direction intersecting with the carcass cords. The belt cords intersect with the carcass cords at an intersection angle θc in a tread crown region, and intersect with the carcass cords at an intersection angle θs in tread shoulder regions, and the intersection angle θc is greater than the intersection angle θs.
Motorcycle tire
A motorcycle tire includes a tread portion, a pair of sidewall portions, a pair of bead portions, a toroidal carcass extending between the pair of bead portions, and a belt layer and a band layer disposed outwardly in the tire radial direction of the carcass in the tread portion. The carcass includes a plurality of carcass cords. The band layer includes a jointless band ply having a band cord wound spirally at an angle equal to or less than 5 degrees with respect to a tire circumferential direction. The belt layer includes a plurality of belt cords arranged in a direction intersecting with the carcass cords. The belt cords intersect with the carcass cords at an intersection angle θc in a tread crown region, and intersect with the carcass cords at an intersection angle θs in tread shoulder regions, and the intersection angle θc is greater than the intersection angle θs.
MOTORCYCLE TIRE
A motorcycle tire includes a tread portion, a pair of sidewall portions, a pair of bead portions, a toroidal carcass extending between the pair of bead portions, and a belt layer and a band layer disposed outwardly in the tire radial direction of the carcass in the tread portion. The carcass includes a plurality of carcass cords. The band layer includes a jointless band ply having a band cord wound spirally at an angle equal to or less than 5 degrees with respect to a tire circumferential direction. The belt layer includes a plurality of belt cords arranged in a direction intersecting with the carcass cords. The belt cords intersect with the carcass cords at an intersection angle θc in a tread crown region, and intersect with the carcass cords at an intersection angle θs in tread shoulder regions, and the intersection angle θc is greater than the intersection angle θs.
Pneumatic tire
Provided is a pneumatic tire including a belt layer. When the tread region indicates a region corresponding to a belt width of the belt layer and the side region indicates a region inward of a tire radial direction with respect to a tire maximum width position, the carcass cords forming the carcass layer are inclined with respect to the tire radial direction in the tread region, and at the same time, extend along the tire radial direction in the side region. The carcass cords forming the carcass layer and belt cords forming the belt layer cross with each other in the tread region.
Pneumatic tire
Provided is a pneumatic tire including a belt layer. When the tread region indicates a region corresponding to a belt width of the belt layer and the side region indicates a region inward of a tire radial direction with respect to a tire maximum width position, the carcass cords forming the carcass layer are inclined with respect to the tire radial direction in the tread region, and at the same time, extend along the tire radial direction in the side region. The carcass cords forming the carcass layer and belt cords forming the belt layer cross with each other in the tread region.
Pneumatic tire
Provided is a pneumatic tire. Both terminals of a carcass layer are overlapped with each other in a tread region. The carcass layer has a triple layer structure including an inner layer positioned most inward in a tire radial direction in the tread region, an outer layer positioned most outward in the tire radial direction in the tread region, and an intermediate layer positioned between the inner layer and the outer layer in the tread region. A cord angle in the carcass layer in a tread central region with respect to a tire circumferential direction differs in at least one of the inner layer, the outer layer, and the intermediate layer from a cord angle in the carcass layer in a side region with respect to the tire circumferential direction.
Pneumatic tire
Provided is a pneumatic tire. Both terminals of a carcass layer are overlapped with each other in a tread region. The carcass layer has a triple layer structure including an inner layer positioned most inward in a tire radial direction in the tread region, an outer layer positioned most outward in the tire radial direction in the tread region, and an intermediate layer positioned between the inner layer and the outer layer in the tread region. A cord angle in the carcass layer in a tread central region with respect to a tire circumferential direction differs in at least one of the inner layer, the outer layer, and the intermediate layer from a cord angle in the carcass layer in a side region with respect to the tire circumferential direction.
PNEUMATIC TIRE
A pneumatic tire comprises a carcass which comprises a carcass ply composed of a main portion extending between bead portions and a pair of turned-up portions turned-up around respective bead cores. The bead portion is provided with: a primary bead apex rubber disposed between the carcass-ply main portion and the carcass-ply turned-up portion; an insulation rubber layer extending radially outwardly through between the carcass-ply main portion and the carcass-ply turned-up portion; and a subsidiary bead apex rubber layer disposed on the axially outside of the carcass-ply turned-up portion. The radially outer edge of the insulation rubber layer is located radially outside the radially outer edge of the subsidiary bead apex rubber layer. The complex elastic modulus of the insulation rubber layer is equal to or greater than the complex elastic modulus of the topping rubber of the carcass ply.