Compagnie Generale des Etablissements Michelin has patented a heavy truck tire featuring a unique bead design. This design includes a bead core, reinforcement ply, and multiple bead layers with specific stiffness parameters, enhancing the tire’s structural integrity and performance. The stiffness of the bead layers ranges from 8 MPa to 14 MPa. GlobalData’s report on Compagnie Generale des Etablissements Michelin gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Compagnie Generale des Etablissements Michelin, Anti-skid tyre treads was a key innovation area identified from patents. Compagnie Generale des Etablissements Michelin's grant share as of July 2024 was 61%. Grant share is based on the ratio of number of grants to total number of patents.
Heavy truck tire with specialized bead design and stiffness
The granted patent US12070972B2 describes a heavy truck tire designed with a specific structural configuration to enhance performance and durability. The tire features a tread and a casing that supports the tread, which includes a bead structure. This bead comprises a bead core, a reinforcement ply, a bead filler, a stiffener layer, and multiple bead layers. Notably, the first and second bead layers exhibit a stiffness range of 8 MPa to 14 MPa, while the bead filler is designed to have a lower stiffness than both bead layers. Additionally, the patent outlines the inclusion of flexible layers that engage with the bead layers, contributing to the overall flexibility and performance of the tire.
Further claims detail the arrangement of these components, emphasizing the radial and axial positioning of the bead layers and their interaction with the stiffener layer. The patent also introduces a third bead layer, which is positioned between the return casing ply and the bead filler, maintaining a stiffness consistent with the first and second bead layers. This layered structure aims to optimize the tire's performance characteristics, ensuring that the stiffness of the various components is carefully calibrated to enhance the tire's functionality in heavy-duty applications. Overall, the patent presents a comprehensive design aimed at improving the structural integrity and operational efficiency of heavy truck tires.
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