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Runflat insert for tire

A run-flat and bushing technology, which is applied to the reinforcement layer of pneumatic tires, special tires, tire parts, etc., can solve the problems of restrictions and limited use, and achieve the effect of performance improvement

Inactive Publication Date: 2004-11-10
MICHELIN & CO CIE GEN DES ESTAB MICHELIN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a solution limits the ability to absorb spike loads introduced from the road surface, thereby operationally limiting the use of said bushings

Method used

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Examples

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Embodiment Construction

[0025] The invention and its several variations will be better understood from the following detailed description. The drawings and detailed description disclose several illustrative examples of specific variations of the invention up to the present invention. Those skilled in the art will understand that specific elements of the described variations can be selected and combined to create new embodiments within the spirit and scope of the invention.

[0026] The following terms and definitions are common to all variations of the invention disclosed herein. The same reference numerals are used throughout to describe the same elements or materials. The same elements, when disclosed in subsequent variations of the invention, will not be discussed in detail.

[0027] Definition of terms

[0028] "Inboard" or "inwardly" means towards the inside of the bushing.

[0029] "Outboard" or "outward" means towards the outside of the bushing.

[0030] "Axial" means a direction parallel...

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Abstract

A runflat insert (200) for enabling a vehicle to run for limited duration on a deflated tire (20), is mounted in an assembly comprising a pneumatic tire (20) and a wheel rim (10), and said insert is mounted inside the tire and secured to the wheel rim. The insert (200) has improved characteristics in load carrying, vehicle handling, mass, and shock transmission. Such a runflat insert (200) comprises an outer, reinforced annular band (220) that is coupled with a sidewall portion (230) having little resistance to compressive loads, and the sidewall portion (230) terminates in a base member (240) fitted around the wheel rim (10) for securing the insert (200) to the rim (10).

Description

technical field [0001] This invention relates to a runflat bushing for mounting on wheel rims and in pneumatic tires. The bush is capable of withstanding vehicle loads in the event of a decrease in tire inflation internal pressure. In particular, the present invention provides improved performance in terms of load carrying, vehicle handling and mass. Background technique [0002] A number of solutions have been proposed in order to provide continued effective vehicle maneuverability after loss of pneumatic tire internal pressure. One class of solutions involves securing a rigid or semi-rigid bushing to the rim and inside the tire. In the event of loss of tire pressure, the vehicle is supported by load transfer from the portion of the liner directly in contact with the inside of the tire through the structure of the liner to the rim. Such a solution limits the ability to absorb spike loads introduced from the road surface, thereby operationally limiting the use of said bus...

Claims

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Application Information

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IPC IPC(8): B60C1/00B60C9/18B60C17/01B60C17/04B60C17/06
CPCB60C1/00B60C17/06B60C2017/068B60C17/01B60C17/04B60C9/18B60C17/00
Inventor T·B·莱恩K·W·德米诺S·M·科龙
Owner MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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