Patent ID: 11951773
Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A tread for a tire of a heavy-duty vehicle, comprising:
a tread surface when new that is intended to come into contact with a road surface when the tire provided with this tread is being driven on, this tread comprising:
edges axially delimiting a tread width;
a plurality of open wells on the tread surface when new near to each of the edges, these open wells of depth Pmax being arranged circumferentially;
each open well being delimited by a first main face and a second main face facing each other and connected by a well bottom, this bottom defining the depth Pmax of the well,
each open well having a maximum length of opening Lc measured in the circumferential direction on the tread surface and a transverse width La measuring the distance between the main faces, this width La being less than the circumferential maximum length of opening Lc, and
each open well is connected to a first axially extending hidden cavity formed within the tread, the first hidden cavity opening into the first main face of said well at a first circumferential end of the open well, and
each open well is connected to a second axially extending hidden cavity formed within the tread, the second hidden cavity opening into the second main face of said well at a second circumferential end of the open well opposite the first end.