Invention Application
- Patent Title: Tread For A Tire Of A Heavy Civil Engineering Vehicle
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Application No.: US15780927Application Date: 2016-12-06
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Publication No.: US20180354310A1Publication Date: 2018-12-13
- Inventor: François BARBARIN , Guillaume DEMAZIERE
- Applicant: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
- Priority: FR1561922 20151207
- International Application: PCT/FR2016/053222 WO 20161206
- Main IPC: B60C11/03
- IPC: B60C11/03

Abstract:
Tire (1) for a heavy-duty vehicle of civil engineering type, and more particularly to the tread (2) thereof, and seeks to improve the grip thereof, while at the same time ensuring a satisfactory compromise with wearing and thermal endurance. The tread (2) comprises cuts (3, 4, 5) distributed, in a circumferential direction (XX′) of the tire, among circumferential grooves (3) and, in an axial direction (YY′) of the tire, transverse sipes (4) and transverse grooves (5), the cuts (3, 4, 5) delimiting elements in relief (6), each cut (3, 4, 5) being delimited by two faces facing one another and each face intersecting the tread surface (21) along an edge corner (311, 321; 411, 421; 511, 521). The tread (2) having a longitudinal edge corners ratio TAX equal to the ratio LX/S between the sum LX of the projections, on to the circumferential direction (XX′), of the effective edge corner lengths, contained in an elementary tread surface portion of surface area S, and the surface area S, and a transverse edge corners ratio TAY equal to the ratio LY/S between the sum LY of the projections, onto the axial direction (YY′), of the effective edge corner lengths, contained in an elementary tread surface portion of surface area S, and the surface area S, the longitudinal edge corners ratio TAX is at least equal to 4 m−1 and the transverse edge corners ratio TAY is at least equal to 6 m−1.
Public/Granted literature
- US11548320B2 Tread for a tire of a heavy civil engineering vehicle Public/Granted day:2023-01-10
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