Pneumatic tire
AssigneeSumitomo Rubber Industries, Ltd.
InventorSusumu Tanaka
Life of this patent
Estimating the term…
Abstract
A pneumatic tire whose mounting location on a vehicle is specified and which comprises a belt disposed radially outside the carcass and composed of belt cords laid at an angle of from 15 to 40 degrees with respect to the tire circumferential direction, and a band disposed radially outside the belt and composed of first and second band cords laid at an angle of not more than 5 degrees with respect to the tire circumferential direction. The band comprises an inboard first part composed of the first band cord having a first modulus M1, and an outboard second part composed of the second band cord having a second modulus M2 more than the first modulus M1. The number of laminated plies of the band in the inboard first part is more than the number of laminated plies or a single ply of the band in the outboard second part.
Claims19
A pneumatic tire having mounting location on a vehicle that is specified and which comprises:
- a carcass extending between bead portions through a tread portion and sidewall portions,
- a belt disposed radially outside the carcass in the tread portion, and composed of belt cords laid at an angle of from 15 to 40 degrees with respect to the tire circumferential direction, and
- a band disposed radially outside the belt, and composed of first and second band cords laid at an angle of not more than 5 degrees with respect to the tire circumferential direction,
- wherein the band consists of
- an inboard first part composed of the first band cord having a first modulus M1 and disposed on one side of the tire equator positioned close to the center of a vehicle body, and
- an outboard second part composed of the second band cord having a second modulus M2 greater than the first modulus M1 and disposed on the other side of the tire equator positioned away from the center of the vehicle body, and
- the number of laminated plies of the band in the inboard first part is more than the number of laminated plies or ply of the band in the outboard second part.
A pneumatic tire having a mounting location on a vehicle that is specified and which comprises:
- a carcass extending between bead portions through a tread portion and sidewall portions,
- a belt disposed radially outside the carcass in the tread portion, and composed of belt cords laid at an angle of from 15 to 40 degrees with respect to the tire circumferential direction, and
- a band disposed radially outside the belt, and composed of first and second band cords laid at an angle of not more than 5 degrees with respect to the tire circumferential direction,
- wherein the band comprises
- an inboard first part composed of the first band cord having a first modulus M1 and positioned close to the center of a vehicle body, and
- an outboard second part composed of the second band cord having a second modulus M2 greater than the first modulus M1 and positioned away from the center of the vehicle body, and
- the number of laminated plies of the band in the inboard first part is more than the number of laminated plies or ply of the band in the outboard second part, and
- wherein the land ratio of one half of the tread portion on the outboard side of the tire equator is more than the land ratio of the other one half of the tread portion on the inboard side of the tire equator,
- the tread portion is provided on each side of the tire equator with an axially outermost, circumferentially continuously extending main groove so as to define a shoulder land portion axially outside the main groove, and
- the axial width W4 of the outboard shoulder land portion is more than the axial width W3 of the inboard shoulder land portion.
Dependencies are inferred from the claim text.