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US 9,783,003 B2Granted
Pneumatic tire
AssigneeThe Yokohama Rubber Co., Ltd.
InventorsKoichi Kotoku, Koshi Iga, Hideki Hamanaka
Life of this patent
Estimating the term…
Abstract
A pneumatic tire includes an inner-side cross belt and an outer-side cross belt forming belt angles of mutually different signs with the tire circumferential direction with absolute values from 46° to 80°, inclusive; a circumferential reinforcing layer arranged between the inner-side cross belt and the outer-side cross belt and forming a belt angle of ±5° with the tire circumferential direction; and a supplemental belt arranged outside the outer-side cross belt in the radial direction of the tire and forming a belt angle with the tire circumferential direction with an absolute value between 10° and 45° inclusive.
Claims16
A pneumatic tire comprising:
- a carcass layer;
- a belt layer arranged outside of the carcass layer in a radial direction of the tire;
- at least three circumferential main grooves provided with a tread rubber arranged outside the belt layer in the radial direction of the tire and extending in a tire circumferential direction;
- and a plurality of land portions defined by the circumferential main grooves;
- the belt layer including an inner-side cross belt and an outer-side cross belt forming belt angles of mutually different signs with the tire circumferential direction with absolute values from greater than 60° to less than or equal to 80°, wherein the inner-side cross belt is a radially innermost ply of the belt layer;
- a circumferential reinforcing layer arranged between the inner-side cross belt and the outer-side cross belt and forming a belt angle of ±5° with the tire circumferential direction;
- and
- a supplemental belt arranged outside the outer-side cross belt in the radial direction of the tire and forming a belt angle with the tire circumferential direction with an absolute value from 10° to 45°, inclusive;
- wherein a maximum acceptable belt angle for the supplemental belt is less than minimum acceptable belt angles for the inner side cross belt or the outer side cross belt;
- and
- a relationship between the width Wb4 of the supplemental belt, and the width Wb3 of the outer-side cross belt satisfies 0.75≦Wb4/Wb3≦0.95.
8 more elements
A pneumatic tire comprising:
- a carcass layer;
- a belt layer arranged outside of the carcass layer in a radial direction of the tire;
- at least three circumferential main grooves provided with a tread rubber arranged outside the belt layer in the radial direction of the tire and extending in a tire circumferential direction;
- and a plurality of land portions defined by the circumferential main grooves;
- the belt layer including an inner-side cross belt and an outer-side cross belt forming belt angles of mutually different signs with the tire circumferential direction with absolute values from greater than 60° to less than or equal to 80°, wherein the inner-side cross belt is adjacent to the carcass layer;
- a circumferential reinforcing layer arranged between the inner-side cross belt and the outer-side cross belt and forming a belt angle of ±5° with the tire circumferential direction;
- and
- a supplemental belt arranged outside the outer-side cross belt in the radial direction of the tire and forming a belt angle with the tire circumferential direction with an absolute value from 10° to 45°, inclusive;
- wherein a maximum acceptable belt angle for the supplemental belt is less than minimum acceptable belt angles for the inner side cross belt or the outer side cross belt;
- and
- a relationship between the width Wb4 of the supplemental belt, and the width Wb3 of the outer-side cross belt satisfies 0.75≦Wb4/Wb3≦0.95.
8 more elements
A pneumatic tire comprising:
- a carcass layer;
- a belt layer arranged outside of the carcass layer in a radial direction of the tire;
- at least three circumferential main grooves provided with a tread rubber arranged outside the belt layer in the radial direction of the tire and extending in a tire circumferential direction;
- and a plurality of land portions defined by the circumferential main grooves;
- the belt layer including an inner-side cross belt and an outer-side cross belt forming belt angles of mutually different signs with the tire circumferential direction with absolute values from greater than 60° to less than or equal to 80°;
- a circumferential reinforcing layer arranged between the inner-side cross belt and the outer-side cross belt and forming a belt angle of ±5° with the tire circumferential direction;
- a supplemental belt arranged outside the outer-side cross belt in the radial direction of the tire and forming a belt angle with the tire circumferential direction with an absolute value from 10° to 45°, inclusive;
- and
- a relationship between the width Wb4 of the supplemental belt, and the width Wb3 of the outer-side cross belt satisfies 0.75≦Wb4/Wb3≦0.95.
6 more elements
Dependencies are inferred from the claim text.