Toroidal insert comprising multiple segments for a run-flat tire assembly

The toroidal insert with multiple segments addresses installation challenges and structural rigidity issues, offering easy tool-free installation and improved load-carrying capacity for run-flat tire assemblies, especially in heavy-duty and military applications.

WO2025210459A1 Publication Date: 2025-10-09XERTOK LC
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Patent Information

Application Number
PCT/IB2025/053284
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-03-31
Filing Date
2025-03-28
Publication Date
2025-10-09

AI Technical Summary

Technical Problem

Conventional run-flat inserts are difficult to install, require specialized tools, and lack structural rigidity for heavy-duty and military applications, limiting their effectiveness in supporting vehicle loads and extended operation.

Method used

A toroidal insert comprising multiple segments, each with specific radial surfaces, is designed for easy installation without tools and optimized for stress distribution, using materials like carbon fiber-reinforced composites to enhance load-carrying capacity and durability.

Benefits of technology

The toroidal insert provides easy installation, improved structural integrity, and enhanced load-carrying capacity, enabling safe vehicle operation for extended distances and speeds in deflated conditions, particularly suitable for heavy-duty and military vehicles.

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Abstract

The present disclosure provides a toroidal insert (100) for a run-flat tire assembly. The toroidal insert (100) comprises at least two inner segments (102) arranged along a circumference of a wheel to define a first annular ring. The toroidal insert further comprises at least two outer segments (120) arranged along the circumference of the wheel to define a second annular ring (122). The at least two outer segments (120) are attached to the at least two inner segments (102) to form the toroidal insert (100). An inner radial surface (132b) of the toroidal insert (100) corresponds to a width of the wheel and is variable.
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