Portable Abrasive Sharpening Tool for Snowmobile Carbide Rails
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Solution Overview
Problem
Snowmobile ski runners with dulled carbide wear rails become dangerous in icy conditions, requiring costly and inconvenient replacement, posing a risk to safety and incurring significant expenses for snowmobilers.
Innovation Solution
A portable sharpening tool with a cylindrical head and abrasive material, attachable to a rotating power tool, designed to sharpen carbide wear rails and studs, allowing for field maintenance and extending the life of the wear rails without the need for replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If carbide wear rails are made sharp to improve control in icy conditions, then safety and control are improved, but the wear rails become dull over time requiring costly replacement
Solution Approach 1:
The snowmobiler performs sharpening themselves using a portable sharpening tool with abrasive material, eliminating the need for professional sharpening services or replacement. The system enables the user to maintain the wear rails independently, extending service life and reducing costs.
Solution Approach 2:
The patent changes the physical state of the wear rail surface by applying abrasive material to remove material and restore sharpness. This parameter change (surface geometry) transforms dull wear rails back to sharp condition, extending their operational life.
2Reliability
If wear bars are replaced when dull to maintain safety, then safety is ensured, but significant costs are incurred
Solution Approach 1:
Instead of discarding dull wear bars, the patent enables recovery of their value by sharpening them in the field. The abrasive material on the cylindrical head restores the wear rails to sharp condition, allowing continued use and avoiding the cost of replacement.
3Reliability
If spare wear bars are packed to ensure safety during multi-day tours, then safety risk is reduced, but convenience and portability are worsened
Solution Approach 1:
The patent extracts the essential function of having spare wear bars by providing a portable sharpening tool instead. Rather than carrying heavy spare wear bars, the user carries a lightweight cylindrical head with abrasive material that can sharpen existing wear rails in the field.
Solution Approach 2:
The sharpening tool is segmented into a shaft and a cylindrical head with abrasive material, allowing the head to be detached and carried separately. This segmentation enables portability while maintaining the sharpening function, eliminating the need to carry complete spare wear bar assemblies.
4Manufacturing precision
If professional sharpening services are used to maintain wear rails, then sharpness is restored, but time and cost are significantly consumed
Solution Approach 1:
The patent enables snowmobilers to sharpen their own wear rails using the portable sharpening tool, eliminating the need to travel to professional sharpening services. This self-service approach restores sharpness in the field without time loss from travel or scheduling appointments.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The sharpening tool effectively maintains sharp carbide wear rails, reducing the risk of accidents and significantly lowering maintenance costs by allowing multiple sharpenings before the tool needs replacement, at a fraction of the cost of traditional wear bars.
Implementation Method 1
an abrasive material disposed on an outer surface of the cylindrical head
Data Source
AI summary
The present invention is a sharpening tool and sharpening system for sharpening snowmobile carbide wear rails and studs and a kit of parts that includes the sharpening tool and a steering member having a carbide wear rail. The sharpening tool is attachable to the chuck of a hand held drill and includes a shaft attachable to the chuck of the hand held drill and cylindrical head affixed to the shaft. The cylindrical head includes a rail groove surfaced in an abrasive material for sharpening wear rails.