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1. (WO2018199273) A NOISE REDUCING TREAD

Pub. No.:    WO/2018/199273    International Application No.:    PCT/JP2018/017117
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Sat Apr 28 01:59:59 CEST 2018
IPC: B60C 19/00
B60C 11/13
Applicants: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
Inventors: FUKUDA Kenji
Title: A NOISE REDUCING TREAD
Abstract:
A tread for a tire having a contact face intended to come into contact with ground during rolling being provided with at least one groove (3) of a radial depth D and a width W being composed of two opposed groove walls (31, 32) and a groove bottom (33) connecting radially innermost of the two opposed groove walls (31, 32), the groove having at least one protrusion (4) protruding radially from the groove bottom (33) with a radial height h having two opposed protrusion faces (41, 42) distant with a length L, each the two opposed protrusion faces (41, 42) facing to a direction the groove provided with the protrusion extends, and a protrusion top face (43) connecting radially outermost of the two opposed protrusion faces (41, 42), the protrusion (4) having at least two slots (5) of a radial depth d and a width w, each opening to the protrusion top face (43) and the two opposed protrusion faces (41, 42), the radial height h of the protrusion (4) is at least equal to 75% of the radial depth D of the groove (3) provided with the protrusion (4).