发明名称 PNEUMATIC TIRE
摘要 A belt layer of a pneumatic tire includes a first main working belt, a second main wording belt having a cord angle different from a cord angle of the first main working belt in a direction with respect to a tire-circumferential direction, reinforcement belt. A cord angle of the reinforcement belt and a representative main groove angle have different directions with respect to the tire-circumferential direction, the representative main groove angle being defined as an angle formed by an element of the main groove with the longest length in the tire-circumferential direction and the tire-circumferential direction.
申请公布号 US2017028781(A1) 申请公布日期 2017.02.02
申请号 US201615220946 申请日期 2016.07.27
申请人 TOYO TIRE & RUBBER CO., LTD. 发明人 Haseda Hiroyuki
分类号 B60C9/20 主分类号 B60C9/20
代理机构 代理人
主权项 1. A pneumatic tire comprising a belt layer arranged between a carcass and a tread portion, wherein the belt layer comprises a first main working belt, a second main working belt arranged at an outer side of the first main working belt in a tire-radial direction, the second main working belt having a cord angle different from a cord angle of the first main working belt in a direction with respect to a tire-circumferential direction, and a reinforcement belt, an absolute value of a cord angle of the reinforcement belt is not smaller than 6 degrees and not larger than 9 degrees, a tread pattern including a main groove is formed on a tread surface of the tread portion, and the cord angle of the reinforcement belt and a representative main groove angle have different directions with respect to the tire-circumferential direction, the representative main groove angle being defined as an angle formed by an element of the main groove with the longest length in the tire-circumferential direction and the tire-circumferential direction.
地址 Osaka JP