The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 05, 2025
Filed:
May. 23, 2022
Compagnie Generale Des Etablissements Michelin, Clermont-Ferrand, FR;
Sophie Gander, Clermont-Ferrand, FR;
Gael Roty, Clermont-Ferrand, FR;
Herve Ferigo, Clermont-Ferrand, FR;
COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, Clermont-Ferrand, FR;
Abstract
The rolling resistance of a tire has been improved without degrading industrial performance. The sidewall () consists of two sub-layers. A first sub-layer (FE) of thickness E1 and volume V1 provides the expected protection functions of a sidewall as the outer wall of the tire, and a second sub-layer of the sidewall (FE) of thickness E2 and volume V2 is optimized at low hysteresis to improve rolling resistance. The ratio V1/(V1+V2) of the volumes of the two sub-layers (FE, FE) is less than or equal to 0.3. The elongation at break of the compound of FEis greater than or equal to 200% measured at a temperature of 100° C., and the viscoelastic loss of the compound of FE, Tan(δ)max, is less than or equal to 0.10.