Tread comprising interrupted grooves
AssigneeCompagnie Generale Des Etablissements Michelin
InventorFrédéric Domprobst
Life of this patent
Estimating the term…
Abstract
Tread (1) for a tire of a heavy-duty vehicle, having a tread surface (10), this tread (1) comprising, near to each of its edges (11), a plurality of open wells (2) on the tread surface when new, these open wells (2) of depth Pmax being arranged circumferentially with a mean distance D between two consecutive open wells; each open well (2) being delimited by two main faces (21, 22) facing one another, this tread being such that each open well (2) is connected to at least one hidden cavity (32) formed within the tread, this hidden cavity (32) opening into a main face (21, 22) of said well.
Claims11
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.
A tread fora 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 two main faces 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 a 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 a main face of said well at a second circumferential end of the open well opposite the first end, and
- the first axially extending hidden cavity and the second axially extending hidden cavity extend toward their axially nearest edge and is axially terminated within the tread.
Dependencies are inferred from the claim text.