公开(公告)号：US20220371370A1

公开(公告)日：2022-11-24

申请号：US17771072

申请日：2020-10-15

Applicant: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN

Inventor： MIGUEL FERNANDEZ ,  KARINE LONGCHAMBON ,  REGIS SCHACH ,  PHILIPPE LABRUNIE ,  ALEXANDRE TOBIE

IPC: B60C11/00

Abstract: A tire comprises an outer strip (2) having a tread (21). The outer strip (2) has a central part and two axially outer parts and comprises at least two rubber compounds (M1, M2) making up at least 90% of the volume of the outer strip (2). The first compound (M1) is radially on the outside of the second compound (M2), which makes up at least 60% of the axially outer parts and being disposed in a layer that is substantially continuous from one axially outer part to the other, said layer having a minimum thickness at least equal to 0.3 mm. The compound M1 has a modulus G* that is greater than 1.35 times and less than 3 times that of the compound M2. The compound M1 has a dynamic loss at 0° C. greater than 0.5 and the compound M2 has a dynamic loss at 23° C. less than 0.3.

公开(公告)号：US20220371371A1

公开(公告)日：2022-11-24

申请号：US17771091

申请日：2020-10-15

Applicant: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN

Inventor： MIGUEL FERNANDEZ ,  REGIS SCHACH ,  PHILIPPE LABRUNIE ,  KARINE LONGCHAMBON ,  ALEXANDRE TOBIE

IPC: B60C11/00

Abstract: A tire comprises an outer strip (2) having a tread (21). The outer strip (2) has a central part and two axially outer parts and comprises at least two rubber compounds (M1, M2) making up at least 90% of the volume of the outer strip (2). The first compound (M1) is radially outside of the second compound (M2), which makes up at least 60% of the axially outer parts and being disposed in a layer that is substantially continuous from one axially outer part to the other, said layer having a minimum thickness at least equal to 0.3 mm. The compound M1 has a modulus G* that is greater than 1.35 times and less than 3 times that of the compound M2. The compound M1 has a dynamic loss at 0° C. greater than 0.5 and the compound M2 has a dynamic loss at 23° C. less than 0.3.

公开(公告)号：US20220194131A1

公开(公告)日：2022-06-23

申请号：US17601625

申请日：2020-03-24

Applicant: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN

Inventor： DANIEL FABING ,  PATRICE FRAYSSE ,  ALEXANDRE TOBIE ,  FRANCOIS-XAVIER BRUNEAU ,  PATRICK PALLOT

IPC: B60C9/28 ,  B60C15/00 ,  B60C15/05 ,  B60C15/06 ,  B60C11/03

Abstract: The invention is a tyre comprising, in the central part of its crown, at least one undulation (51) of the radially outermost crown layer, having a radial amplitude A at least equal to 1 mm. At least one bead comprises, aside from the radial carcass layer and the bead wire, a radial reinforcing element that is such that the axial distance between the radial reinforcing element and the axially innermost carcass layer is at least equal to 1 mm and at most equal to 12 mm at the point of the radial reinforcing element that is situated 30 mm from the radially innermost point of the bead wire, for a better trade-off between the stiffness of the undulating crown and of the bead.