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公开(公告)号：US11535060B2
公开(公告)日：2022-12-27
申请号：US17036488
申请日：2020-09-29
摘要： A heavy duty pneumatic tire in which occurrence of uneven wear is inhibited is provided. In the tire, each shoulder land portion includes a groove wall portion forming a wall of a shoulder circumferential groove, and a cap portion located outward of the groove wall portion in an axial direction. A wear resistance index of the groove wall portion is lower than a wear resistance index of the cap portion. A ratio of a distance in the axial direction from an outer edge of the shoulder circumferential groove to a boundary between the groove wall portion and the cap portion on an outer surface of the shoulder land portion, to a width in the axial direction of the shoulder land portion, is not less than 20% and not greater than 30%.
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公开(公告)号：US11235618B2
公开(公告)日：2022-02-01
申请号：US16176376
申请日：2018-10-31
发明人： Yoshiki Kanaya , Yoshiyuki Takada , Mitsuharu Koya
IPC分类号： B60C9/02 , B60C13/00 , B60C15/06 , B60C3/04 , B60C9/00 , B60C15/00 , B60C9/08 , B60C9/18 , B60C9/28
摘要： A heavy-duty pneumatic tire includes a section width being equal to or less than 335 mm, an aspect ratio being equal to or less than 55%, and a toroidal carcass extending between axially spaced bead portions through a tread portion and sidewall portions. The carcass includes a carcass ply which includes a main portion and a turn-up portion turned up around a bead core of each bead portion. A belt layer is disposed radially outward of the carcass in the tread portion, wherein a radially outer end of the turn-up portion is located between the main portion and the belt layer in the tread portion. A sheeted rubber layer is disposed between the main portion and the turn-up portions in each sidewall portion.
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