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发明授权
US5435364A Pneumatic radial tire with four main grooves 失效
气动子午线轮胎，四个主槽

Pneumatic radial tire with four main grooves
摘要：
A pneumatic radial tire comprises four main grooves, shoulder lateral grooves (g1L, g1R), middle lateral grooves (g2L, g2R) and central lateral grooves (g3L, g3R); the central lateral grooves (g3L) on one side of the tire equator being circumferentially shifted from the central lateral grooves (g3R) on the other side of the tire equator; the middle lateral grooves (g2L, g2R) shifted from the central lateral grooves (g3L, g3R) towards a circumferential direction (D); the shoulder lateral grooves (g1L, g1R) shifted from the middle lateral grooves (g2L, g2R) towards the circumferential direction (D); the total (WG) of the axial widths (WG1, WG2) of the four main grooves being 0.25 to 0.32 times the ground contacting area width (W); on each side of the tire equator, the width (W) and the total (LG1+LG2) of the axial length (LG1) measured from the ground contacting area edge (SE) to the axially inner edge of the shoulder rib (RS) and the axial length (LG2) measured from the ground contacting area edge (SE) to the axially inner edge of the middle rib (RM) satisfying the following relation: 0.44.ltoreq. (LG1+LG2)/W.ltoreq. 0.50.
摘要（中）：

充气子午线轮胎包括四个主槽，胎肩横向槽（g1L，g1R），中间横向槽（g2L，g2R）和中央横向槽（g3L，g3R）; 轮胎赤道一侧的中央横向槽（g3L）从轮胎赤道的另一侧的中央横向槽（g3R）周向移位; 中间横向槽（g2L，g2R）从中央横向槽（g3L，g3R）向周向（D）移动; 从中间横向槽（g2L，g2R）向周向（D）移动的胎肩横向槽（g1L，g1R） 四个主槽的轴向宽度（WG1，WG2）的总（WG）为接地面积宽度（W）的0.25〜0.32倍。 在轮胎赤道的每一侧上，从地面接触区域边缘（SE）到肩部肋条（RS）的轴向内边缘测量的轴向长度（LG1）的宽度（W）和总体（LG1 + LG2） 和从地面接触区域边缘（SE）到中肋（RM）的轴向内边缘测量的轴向长度（LG2）满足以下关系：0.44

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