Tire
AssigneeThe Yokohama Rubber Co., Ltd.
InventorMasashi Noritake
Life of this patent
Estimating the term…
Abstract
A belt layer includes an inner cross belt having a belt cord angle with an absolute value of 45 degrees or more relative to the circumferential direction, an outer cross belt having a belt cord angle with an absolute value of 45 degrees or less relative to the circumferential direction with an opposite sign as the belt cord angle of the inner cross belt and outward of the inner cross belt in the radial direction, and a circumferential reinforcing layer including a belt cord having a belt angle within ±5 degrees relative to the circumferential direction and disposed between the inner and outer cross belts. A width W1 of the circumferential reinforcing layer in the width direction, a width W2 of the inner cross belt in the width direction, and a width W3 of the outer cross belt in the width direction satisfy a relationship W1<W3<W2.
Claims10
A tire, comprising:
- a carcass layer;
- a belt layer disposed on an outer side of the carcass layer in a tire radial direction and continuous in a tire circumferential direction;
- a tread rubber disposed on an outer side of the belt layer in the tire radial direction;
- at least two circumferential main grooves extending in the tire circumferential direction in the tread rubber;
- and
- a plurality of land portions defined by the circumferential main grooves in the tread rubber;
- the belt layer comprising
- a radially inner belt comprising a belt cord having a belt angle,
- a radially outer cross belt comprising a belt cord having a belt angle having an absolute value of 45 degrees or less with respect to the tire circumferential direction with a sign opposite to a sign of the belt angle of the radially inner cross belt and disposed on an outer side of the radially inner cross belt in the tire radial direction, and
- a circumferential reinforcing layer comprising a belt cord having a belt angle within a range of ±5 degrees with respect to the tire circumferential direction and disposed between the radially inner cross belt and the radially outer cross belt, and
- a width W1 of the circumferential reinforcing layer, a width W2 of the radially inner cross belt, and a width W3 of the radially outer cross belt satisfying a relationship W1<W3<W2, wherein
- in the belt layer, each belt radially inward in the tire radial direction of the circumferential reinforcing layer includes a belt cord having a belt angle having an absolute value of 46 degrees or more with respect to the tire circumferential direction.
Dependencies are inferred from the claim text.