发明名称 |
TREAD FOR WINTER TIRE COMPRISING SIPES AND CAVITIES |
摘要 |
A snow tire tread having a plurality of blocks separated by grooves and provided with sipe incisions dividing into several parts from a certain depth onwards, (complex sipes each having, when viewed in cross section, a rectilinear first part extending radially from the tread surface of the tread, and a second part extending the first part and comprising at least two branches each having an end. The tread has cavities each extending between the branches of a complex sipe and having a bottom situated at the same level as the ends of the branches. The cavities and the grooves of the tread are configured so that this tread has a voids surface ratio at the end of wear greater than or equal to 35%. Furthermore, the distance (D) between two branches of two adjacent complex sipes is at least equal to 2 mm. |
申请公布号 |
EP2925542(A1) |
申请公布日期 |
2015.10.07 |
申请号 |
EP20130794920 |
申请日期 |
2013.11.22 |
申请人 |
COMPAGNIE GÉNÉRALE DES ETABLISSEMENTS MICHELIN;MICHELIN RECHERCHE ET TECHNIQUE S.A. |
发明人 |
LEDIEU, VINCENT;FRAENKEL, BERTRAND;BATNINI, ILLYES;VANTAL, MARIE-HÉLÈNE |
分类号 |
B60C11/12;B60C11/03 |
主分类号 |
B60C11/12 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|