Tire
AssigneeSumitomo Rubber Industries, Ltd.
InventorsMasahiro Tatsuta, Junya Tamai, Tomohiko Hiroshige, Hiroki Sato
Life of this patent
Estimating the term…
Abstract
A tire can include a pair of beads, a carcass, an inner liner, and an insulation located between the carcass and the inner liner. The carcass can include one carcass ply. The carcass ply can include a plurality of carcass cords and a topping rubber. Each carcass cord can have a total fineness of not less than 6000 dtex and not greater than 9000 dtex. The insulation can be located between first and second beads. A ratio (ta/td) of a thickness to of the topping rubber located between the insulation and the carcass cords to a thickness td of the insulation can be not less than 0.2 and not greater than 0.6.
Claims12
A tire comprising:
- a tread configured to come into contact with a road surface;
- a pair of sidewalls each connected to an end of the tread and located radially inward of the tread;
- a pair of beads each located radially inward of the sidewall;
- a carcass located inward of the tread and the pair of sidewalls and extending on and between a first bead and a second bead out of the pair of beads;
- a belt located between the tread and the carcass in a radial direction;
- an inner liner located inward of the carcass;
- and
- an insulation located between the carcass and the inner liner, wherein
- each of the beads includes a core and an apex located radially outward of the core,
- the carcass includes only one carcass ply, the carcass ply includes a ply body extending between the core of the first bead and the core of the second bead, and a pair of turned-up portions connected to the ply body and turned up at the cores of the first and second beads,
- the carcass ply includes a plurality of carcass cords aligned with each other and a topping rubber covering the carcass cords, each of the carcass cords being an organic fiber cord formed of only one or more organic fibers,
- each of the carcass cords has a total fineness of not less than 6000 dtex and not greater than 9000 dtex,
- the insulation is located between the first bead and the second bead,
- a ratio of a thickness of a portion of the topping rubber located between the insulation and the carcass cords to a thickness of the insulation is not less than 0.2 and not greater than 0.6,
- a thickness of the carcass ply is not less than 1.1 mm and not greater than 1.4 mm,
- the inner liner includes an inner layer forming a tire inner surface, and an outer layer stacked outward of the inner layer,
- the inner layer is a crosslinked product of a rubber composition containing a butyl-based rubber,
- the outer layer is a crosslinked product of a rubber composition containing natural rubber, and
- a ratio of a complex elastic modulus of the insulation to a complex elastic modulus of the outer layer is not less than 1.0 and not greater than 2.0.
Dependencies are inferred from the claim text.