Handheld Skate Blade Sharpener with Adjustable Slot and Rotating Stone
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Solution Overview
Problem
Existing ice skate sharpening tools often result in uneven blade edges due to incorrect orientation and fixed stone positions, leading to reduced control and effectiveness, and are not adaptable to varying blade widths, causing material buildup and inefficiency.
Innovation Solution
A hand-operated ice skate sharpening tool with a cylindrical stone that rotates incrementally and an adjustable slot width, using thumb screws and a biasing mechanism to center the stone over the blade, ensuring even sharpening and preventing material buildup by allowing shavings to fall out.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed position stone is used in the sharpener, then the structure is simple, but material buildup occurs and effectiveness decreases
Solution Approach 1:
The sharpening stone is made rotatable on the shaft rather than fixed, allowing it to rotate to new unused areas during sharpening strokes. This dynamic transformation enables the stone surface to be continuously refreshed, preventing material buildup and maintaining sharpening effectiveness throughout extended use without requiring complex replacement mechanisms.
2Adaptability or versatility
If a one size fits all slot is used, then the device is universal, but accurate orientation for all blade widths is not achieved
Solution Approach 1:
The slot width is made adjustable through movable side walls that can be positioned to match different blade widths, and the sharpening stone orientation is dynamically adjusted using a shaft mechanism that allows rotation and positioning. This ensures accurate centering and orientation of the stone over the blade regardless of blade width variations across different skate manufacturers.
3Ease of operation
If the sharpener is not orientated in the correct position, then operation is easier, but uneven blade edges result
Solution Approach 1:
The device incorporates preliminary positioning features including adjustable side walls that clamp onto the blade before sharpening begins, and a shaft mechanism that pre-centers the sharpening stone over the blade. These preliminary actions ensure correct orientation is automatically established before the sharpening process starts, eliminating the need for user judgment and guaranteeing uniform blade edges.
Solution Approach 2:
The sharpening device performs self-alignment through its mechanical design where the adjustable slot and shaft-mounted stone automatically position themselves correctly relative to the blade during insertion and clamping. The system self-corrects for orientation without requiring user skill or adjustment, ensuring consistent precision across different users and operations.
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 tool provides consistent and even sharpening of ice skate blades, preventing uneven edges and material buildup, thus enhancing control and efficiency by ensuring the stone always contacts a new surface, maintaining sharpness and reducing operational difficulties.
Implementation Method 1
a resilient washer or other spring-type member located between the fastener heads and the surfaces of the handle halves
Implementation Method 2
different set of fasteners are adapted and configured to bias the halves apart from each other with a variable biasing force
Implementation Method 3
a cylindrical sharpening stone that is positioned directly over the blade... The sharpener preferably has a cylindrical sharpening stone that incrementally rotates with each stroke
Data Source
AI summary
A skate blade sharpening tool that has a cylindrical sharpening stone that is positioned directly over the blade and adjusting the slot width in the sharpener using thumb screws to match the blade width. When tightening the thumb screws, the two halves of the tool handle will decrease the slot width onto the blade. This pressure on the blade will force the through shaft and cylindrical stone to be centered over the blade. The sharpening stone will remove metal to match the shape of the stone each time the sharpener is moved back and forth along the blade. The sharpening stone has gears on each end of the stone that match the gears inside the two-piece body. As the tool is moved along the skate blade, the sharpening stone will incrementally rotate within the body when the direction is changed in the reciprocating motion by the user's back and forth movement. The sharpener also has a deburring stone mounted to the black of the handheld sharpener.