Schwerlastreifen

Details

Veröffentlichungs-Nr.

EP4331868

Aktenzeichen

EP23189444

Anmeldetag

3. August 2023

Veröffentlichung

4. Februar 2026

Erteilung

4. Februar 2026

Rechtsraum

EP

IPC

B60C11/00// B60C11/03B60C11/13B60C1/00

Abstract

A heavy duty tire comprising a tread part, wherein the tread part comprises a plurality of circumferential grooves extending continuously in a tire circumferential direction, wherein the tread part at least comprises three rubber layers, wherein a tan δ at 70°C of the rubber composition constituting the first layer is smaller than a tan δ at 70°C of the rubber composition constituting the second layer, and wherein, when a tire outer diameter is defined as Dt, in m, a thickness of the first layer is defined as t1, in mm, and a groove depth at a deepest part of the circumferential grooves is defined as H, in mm, 70°C tan δ2/Dt is greater than 0.09, and t1/H is 0.90 or less.

Anmelder

Firma

Sumitomo Rubber Industries, Ltd.

Land

🇯🇵 Japan

Fachgebiete