Segmented Run Flat Tire Extended Lip Bead Retention
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Solution Overview
Problem
Existing run flat tire systems face challenges in maintaining tire bead retention and traction, especially on soft ground, and require complex and costly installation processes.
Innovation Solution
A run flat tire device with an extended lip feature on each side of the main body portion and a two- or three-section design connected by nuts and bolts, made of 100% composite material, which provides bead lock capabilities and improved traction on soft ground without needing specialized tools for installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing run flat tire systems are used, then tire integrity is maintained after damage, but bead retention and traction on soft ground deteriorate
Solution Approach 1:
The run flat device is divided into multiple sections (first section, second section, third section) that can be assembled around the wheel. This segmentation allows the device to provide enhanced bead retention features at critical locations while maintaining overall structural integrity and reliability of the tire system.
Solution Approach 2:
The invention introduces extended lips that protrude radially outward from the main body of the run flat device. This dimensional extension creates additional contact surface area with the soft ground, improving traction and bead retention without compromising the tire's structural integrity.
2Reliability
If existing run flat tire systems are used, then tire integrity is maintained after damage, but installation process becomes complex and costly
Solution Approach 1:
The device is divided into multiple sections that can be assembled around the wheel in a straightforward sequence. The sections connect through simple interfaces that align with corresponding openings in the wheel, eliminating the need for specialized installation equipment while maintaining tire integrity.
Solution Approach 2:
The run flat device is designed to be self-installing around the wheel using basic alignment features and simple fastening mechanisms. The sections naturally position themselves during installation, reducing the complexity and cost of the installation process while ensuring proper tire integrity maintenance.
3Ease of operation
If extended lip feature is added to maintain bead against wheel flange, then mobility on soft ground is improved, but device complexity increases
Solution Approach 1:
The extended lip feature is integrated into specific sections of the run flat device rather than requiring a completely redesigned structure. This segmented approach allows the mobility-enhancing feature to be added to the existing device architecture with minimal increase in overall complexity.
Solution Approach 2:
The extended lips serve multiple functions: they provide traction on soft ground, maintain bead retention against the wheel flange, and distribute loads during operation. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity while improving mobility.
Data Source
AI summary
An improved run flat tire and system for use with a two-piece or multi-piece wheel and tire to provide for continued operation of vehicles after tire deflation. Certain aspects of the invention include a plurality of arcuate sections releasably aligned and secured to each other for positioning around a wheel, wherein extended lip portions of each arcuate section extend laterally from the inner base portion of each arcuate section to limit lateral movement of the run flat device relative to the wheel.