Tread (1) for heavy vehicle tyre, this tread having a tread surface (10) in the new state, this tread comprising a plurality of cuts opening onto the tread surface in the new state and at least one canal (30) internal to the tread, this canal (30) being intended to form a new groove when the tread becomes partially worn; furthermore, each canal (30) is extended radially toward the tread surface (10) by a sipe (4) having the same orientation as said canal and of width L4, and in addition a plurality of sipes (3) of width L3 intersect the sipe that extends each canal to form a well (50), this well opening both onto the tread surface (10) in the new state and into a canal (30), the tread according to the invention being such that, at least for a plurality of wells (50), each well has, in a direction extending from the tread surface (10) toward the canal (30), at least one part of maximum cross section (51) and one part of smaller cross section (52), the part of smaller cross section (52) having a cross-sectional area smaller than the cross-sectional area of the part of maximum cross section (51) so as to limit the ingress of foreign bodies of determined dimensions into this well and as far as a canal.
Tread and tyre for heavy vehicle
2015-05-13
Patent
Electronic Resource
English
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen |
TYRE TREAD FOR HEAVY GOODS VEHICLE TYRE HAVING IMPROVED INCISIONS
European Patent Office | 2021
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