Tire
AssigneeSumitomo Rubber Industries, Ltd.
InventorsChisato OMORI, Takuya OSAWA
Life of this patent
Estimating the term…
Abstract
A tread of a tire can include a cap layer and a base layer. A loss tangent of the cap layer at 30° C. may be not greater than 0.30, and a loss tangent of the base layer at 30° C. may be less than the loss tangent of the cap layer at 30° C. The base layer can be inward of a reference end of the tread in an axial direction A fixing layer can be between the cap layer and a carcass in a radial direction. A first end of the fixing layer can be outward of an end of the base layer in the axial direction, or a position of the first end of the fixing layer can coincide with a position of the end of the base layer in the axial direction. Adhesiveness of the fixing layer can be higher than adhesiveness of the cap layer.
Claims20
A tire comprising:
- a tread;
- a pair of sidewalls inward of the tread in a radial direction so as to be continuous with ends of the tread;
- a pair of beads inward of the sidewalls in the radial direction;
- a carcass inward of the tread and the pair of sidewalls so as to extend on and between one of the beads and another of the beads;
- a belt between the tread and the carcass in the radial direction, the belt including multiple belt cords aligned with each other;
- an inner liner inward of the carcass;
- and
- a pair of fixing layers spaced from each other in an axial direction,
- wherein the tread has a circumferential groove formed therein, and a groove depth of the circumferential groove being not greater than 7.0 mm,
- wherein the tread comprises a cap layer and a base layer covered by the cap layer,
- wherein a loss tangent of the cap layer at 30° C. is not greater than 0.30, and a loss tangent of the base layer at 30° C. is less than the loss tangent of the cap layer at 30° C.,
- wherein the base layer is inward of a reference end of the tread in the axial direction,
- wherein each said fixing layer is between the cap layer and the carcass in the radial direction,
- wherein a first end of the fixing layer is outward of an end of the base layer in the axial direction, or a first position of the first end of the fixing layer coincides with a second position of the end of the base layer in the axial direction, and
- wherein adhesiveness of each said fixing layer is higher than adhesiveness of the cap layer.
A tire comprising:
- a tread;
- a pair of sidewalls inward of the tread in a radial direction so as to be continuous with ends of the tread;
- a pair of beads inward of the sidewalls in the radial direction;
- a carcass inward of the tread and the pair of sidewalls so as to extend on and between one of the beads and another of the beads;
- a belt between the tread and the carcass in the radial direction, the belt including multiple belt cords aligned with each other;
- an inner liner inward of the carcass;
- a pair of fixing layers spaced from each other in an axial direction;
- and
- a band between the tread and the belt in the radial direction, the band comprising a helically wound band cord,
- wherein the tread has a circumferential groove formed therein, and a groove depth of the circumferential groove being not greater than 7.0 mm,
- wherein the tread comprises a cap layer and a base layer covered by the cap layer,
- wherein a loss tangent of the cap layer at 30° C. is not greater than 0.30, and a loss tangent of the base layer at 30° C. is less than the loss tangent of the cap layer at 30° C.,
- wherein the base layer is inward of a reference end of the tread in the axial direction,
- wherein each said fixing layer is between the cap layer and the carcass in the radial direction,
- wherein a first end of the fixing layer is outward of an end of the base layer in the axial direction, or a first position of the first end of the fixing layer coincides with a second position of the end of the base layer in the axial direction,
- wherein adhesiveness of each said fixing layer is higher than adhesiveness of the cap layer,
- wherein the band is a full band in which both ends oppose each other across an equator plane, and
- wherein each of the fixing layers directly contacts the cap tread at a first side of the fixing layer and directly contacts the carcass at a second side of the fixing layer opposite the first side.
Dependencies are inferred from the claim text.