Off-Road Tire Sidewall Repair Patch Kit
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Solution Overview
Problem
Current methods lack a reliable and field-applicable solution for repairing tears in the sidewalls of off-road vehicle tires, particularly tubeless tires, as existing repair techniques require dismounting the tire from the rim, which is impractical in remote or emergency situations.
Innovation Solution
A patch kit comprising inside and outside patch components with a compressing component, allowing for the repair of sidewall tears without dismounting the tire from the rim, using a threaded rod and nuts or a bolt to compress the patch components together with the tire sidewall, enabling temporary or permanent repair.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a patch is applied to repair a sidewall tear, then the pneumatic integrity is restored, but the tire must be dismounted from the rim which is impractical in field conditions
Solution Approach 1:
The patch system is divided into two separate components: an inner patch component that remains inside the tire and an outer patch component that remains outside the tire. This segmentation allows each component to be independently positioned and secured without requiring tire dismounting, resolving the contradiction between restoring pneumatic integrity and maintaining field repairability.
Solution Approach 2:
The inner patch component is inserted through the sidewall defect and positioned inside the tire, while the outer patch component remains outside. The two components are then joined together using a fastening mechanism, creating a nested configuration where the inner patch is effectively housed within the tire structure while being secured by the outer patch. This nesting approach enables repair without tire removal.
2Reliability
If conventional patching methods are used, then the tear is sealed, but special tools and tire removal equipment are required
Solution Approach 1:
The patch system is designed to be self-contained and self-applicable. The inner patch component can be manually inserted through the defect, and the outer patch component can be manually positioned and fastened using simple tools. The system does not require specialized equipment or complex tooling, enabling users to perform the repair themselves in field conditions while achieving reliable tear sealing.
3Ease of operation
If the tire is kept mounted on the rim for field repair, then mobility is maintained, but access to the inner sidewall surface is limited
Solution Approach 1:
Instead of attempting to access the inner sidewall surface from the inside of the tire (which would require tire removal), the approach is inverted: the inner patch component is inserted through the defect from the outside and positioned inside the tire, while the outer patch component remains outside and is used to secure the repair. This inversion of the traditional patching approach enables full access to both inner and outer surfaces while keeping the tire mounted.
Data Source
AI summary
A patch kit and method for repairing a tear in a sidewall of an off-road vehicle tire includes an inside patch component, an outside patch component, and a compressing component for assembling, joining and compressing the inner and outer patch components together with the tire sidewall sandwiched therebetween. The compressing component is a threaded rod and a nut or bolt head to dispose on both ends. The inside and outside patch components are rigid or semi-rigid cupped shells with a hole for the threaded rod, so that the rod may pass through the patches and the tear for compression by tightening a nut. To facilitate tire repair without removing the tire from its rim, a recovery cable is temporarily connected to pull together repair components after they are separately pushed through the tear into the tire.