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1. 发明申请

WO2007071284A1 PNEUMATIC TIRE HAVING AN ASYMMETRIC TREAD PROFILE 审中-公开
标题翻译：具有非对称轮廓的气胎
公开(公告)号：WO2007071284A1
公开(公告)日：2007-06-28
申请号：PCT/EP2005/056974
申请日：2005-12-20
申请人： PIRELLI TYRE S.p.A. , BIZZI, Stefano , BOIOCCHI, Maurizio , MATRASCIA, Giuseppe , SCALTRITTI, Dario
发明人： BIZZI, Stefano , BOIOCCHI, Maurizio , MATRASCIA, Giuseppe , SCALTRITTI, Dario
IPC分类号： B60C3/06 , B60C11/00
CPC分类号： B60C11/0083 , B60C3/06 , B60C11/033 , Y10T152/10504
摘要： A tire having (i) an asymmetric tread profile with a shoulder drop difference of from 0.3 to 0.9; and (ii) an asymmetric tread pattern so as to have a ratio between the inner void/solid ratio and the outer void/solid ratio of from 1.1 to 1.50. By the above combination of features, handling and aquaplaning performance is remarkably improved even at high operating speeds without negatively affecting the wear resistance of the tread band.
摘要翻译：一种轮胎，其具有（i）肩峰下降差为0.3〜0.9的不对称胎面轮廓; 和（ii）不对称胎面花纹，使得内部空隙/固体比与外部空隙/固体比之间的比率为1.1至1.50。通过上述特征的组合，即使在高运行速度下，处理和滑水性能也显着提高，而不会不利地影响胎面带的耐磨性。

2. 发明申请

WO2009060476A1 PNEUMATIC TYRE 审中-公开
标题翻译：气动轮胎
公开(公告)号：WO2009060476A1
公开(公告)日：2009-05-14
申请号：PCT/IT2007/000774
申请日：2007-11-05
申请人： PIRELLI TYRE S.P.A. , BOLZONI, Roberto , SANGALLI, Roberto , SCALTRITTI, Dario
发明人： BOLZONI, Roberto , SANGALLI, Roberto , SCALTRITTI, Dario
IPC分类号： B60C11/03 , B60C11/11
CPC分类号： B60C11/1263 , B60C11/0304 , B60C11/0306 , B60C11/0309 , B60C11/033 , B60C11/1369 , B60C2011/0369 , B60C2011/0372
摘要： A pneumatic tyre (1) for car having a tread (2) comprising a central portion (Ll) disposed astride an equatorial plane (7) and two shoulder portions (8, 12). The central portion (Ll) is separated from the tread shoulder portions (8, 12) by two circumferential grooves (3, 6); at least one circumferential row (9) included between a first and a second circumferential groove (3, 4) is present in the central portion (Ll). The tread (2) has a hollow/solid ratio lower than 0.28. The circumferential row (9) comprises transverse grooves (16) extending over at least 80% of the width of the circumferential row (9). Each transverse groove (16) comprises a median line having at least one first rectilinear stretch (106; 107) and one curvilinear stretch (108). The transverse grooves (16) have a smaller width than that of the circumferential grooves (3; 4).
摘要翻译：一种用于汽车的充气轮胎（1），其具有胎面（2），该胎面包括跨越赤道平面（7）和两个肩部（8,12）设置的中心部分（L1）。中心部分（L1）通过两个周向槽（3,6）从胎面肩部（8,12）分离; 包括在第一和第二周向槽（3,4）之间的至少一个周向排（9）存在于中心部分（L1）中。胎面（2）具有小于0.28的中空/固体比。周向排（9）包括在周向排（9）的宽度的至少80％上延伸的横向槽（16）。每个横向槽（16）包括具有至少一个第一直线拉伸（106; 107）和一个曲线拉伸（108）的中间线。横向槽（16）的宽度小于圆周槽（3; 4）的宽度。

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