The Goodyear & Tire Rubber Company

Pierre Felix Orlewski

Christian Jean-Marie Kaes

Claude Schweitzer

Sylvain Fourme

Abdulkareem Melaiye

Michael Freylinger

Yves Francois Claude Decoster

Pauline Monique Ghislaine Delroisse

Pauline Monique Marie-Lucie Ghislaine Delroisse

Aspects of the present invention relate to methods for characterizing a multi-layered tire tread. In one example, a method comprises providing a first rubber composition having a first refractive index and providing a second rubber composition having a second refractive index. The method further comprises determining a difference between the first refractive index and the second refractive index and comparing the difference to a threshold refractive index. In addition, the method comprises adding a refractive index modifier to the first rubber composition and/or second rubber composition in case the comparison provides that the difference is lower than the threshold refractive index, so that the difference is greater than, or equal to, the threshold refractive index.

Terahertz characterization of a multi-layered tire tread

This invention relates to tire tread wear monitoring. A sacrificial magnet portion is arranged in a tread of the tire so that it undergoes wear along with the tread and generates a useful magnetic field signal indicative of remaining tread thickness. With a magnetic field sensor arranged on or in the tire, an overall magnetic field signal is measured, which includes the useful magnetic field signal, and a superimposed interfering magnetic field signal generated by magnetizable material contained in the tire. A non-sacrificial magnet portion is used to saturate the magnetizable material at least locally so as to make the interfering magnetic field signal sensed by the magnetic field sensor substantially independent of the useful magnetic field signal sensed by the magnetic field sensor. Further aspects of the invention relate to tires, e.g., vehicle tires, featuring a tire tread wear monitoring system.

Tire with magnetic tread wear sensor and tread wear monitoring method

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Ettelbruck, Luxembourg

Pierre Felix Orlewski