Tread for tire of heavy vehicle i.e. trailer, has incisions that are circumferentially oriented and extended into tread for interconnecting drain wells, where each drain well is formed in tread by opening on rolling surface of tread

摘要

The tread (2) has incisions (4) that are circumferentially oriented and extended into the tread over a depth less than the average thickness of the tread. Each incision is extended radially toward an inner side of the tread by a channel, where each incision interconnects drain wells (6). Each drain well is formed in the tread by an opening (61) on a rolling surface (3) of the tread and another opening in the channel. A protuberance formed on a base of the channel has height less than that of the channel, and width lower than the maximum width of the channel. An independent claim is also included for a mold element for molding an incision in a tread of a tire.