Knife Sharpening Angle Guide with Inclined Cutouts
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Solution Overview
Problem
Existing knife sharpening angle guides are cumbersome, limited in applicability, and fail to maintain the desired sharpening angle consistently during the sharpening process, leading to suboptimal sharpening quality and burr formation.
Innovation Solution
A compact, oval-shaped knife sharpening angle guide with removable attachment to sharpening rods, featuring inclined guiding cutouts that maintain a consistent sharpening angle and allow for bidirectional movement, enabling efficient sharpening of both sides of the blade without a spring mechanism, thus ensuring universal compatibility with various sharpening rods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a spring mechanism is used to maintain the guide position on the sharpening rod, then the guide can be automatically returned to rest position, but the device becomes more complex and larger in size
Solution Approach 1:
The patent removes the spring mechanism from the device, extracting the complex automatic return function. Instead, the guide is designed to be manually moved along the sharpening rod and held in position by friction and gravity, eliminating the need for springs while maintaining operational simplicity.
Solution Approach 2:
The guide utilizes the sharpening rod itself and gravity to maintain position during sharpening operations. The rod's surface friction and the guide's geometry work together to hold the guide in place without additional mechanical components, making the system self-sufficient.
2Manufacturing precision
If the guide is fixed at a particular location on the sharpening rod, then the sharpening angle is maintained at that location, but the angle cannot be maintained during the entire sharpening motion along the rod
Solution Approach 1:
The guide is designed to be movable along the sharpening rod rather than fixed at a single location. It can be positioned at different locations depending on which side of the blade is being sharpened, allowing the sharpening angle to be maintained dynamically throughout the entire sharpening motion.
Solution Approach 2:
The guide features separate guiding surfaces for different sides of the blade, allowing independent positioning and angle maintenance for each side during the sharpening process.
3Adaptability or versatility
If the guide body has cutouts at opposite sides, then both sides of the blade can be sharpened, but the construction becomes more complex
Solution Approach 1:
The guide body features asymmetric cutouts positioned at opposite sides, each tailored to accommodate the specific geometry of the blade being sharpened. This asymmetric design allows both sides of the blade to be sharpened effectively while maintaining a relatively simple overall construction.
Data Source
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AI summary
The invention relates to hand tools of knife sharpening, especially for sharpening of kitchen knifes, namely relates to angle guides for knife sharpening. This angle guide has a removably attachable body that is put on a sharpening rod through a hole going through the body, which has the ability to move back and forth on the rod. The body has guiding cutouts for the blade of a knife that allow to maintain the desired angle against the sharpening rod during the sharpening procedure. At least one pair of cutouts with inclined narrowing cavities are formed in the body on its opposing sides in opposing directions, which allows to alternate between the sides of the blade during the sharpening process and in this way much less burr is produced.