Egg Opener with Non-Circular Blade to Prevent Shell Slippage
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Solution Overview
Problem
Existing methods for opening and consuming eggs are often time-consuming, fiddly, and result in difficulties such as shell fragments mixing with the liquid component or becoming lodged in the cooked white.
Innovation Solution
An egg multi-tool device that includes an eggshell opener with a non-circular, curved blade for easily breaking the eggshell, an egg separator with a pivotable bowl for separating the yolk from the white, and a collapsible spoon for convenient eating and transportation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a circular blade is used to break the eggshell, then the blade can rotate smoothly, but it slips on the eggshell rather than cutting it effectively
Solution Approach 1:
The patent applies asymmetry by changing the blade shape from circular to non-circular (e.g., D-shaped, oval, or with flat portions). This asymmetric geometry prevents the blade from slipping on the eggshell by creating uneven contact points that provide mechanical grip, while still allowing smooth rotation. The non-circular shape ensures the blade engages the shell edge effectively without slipping, resolving the contradiction between smooth rotation and cutting effectiveness.
2Reliability
If traditional methods are used to separate yolk from white, then the separation can be achieved, but the process is time-consuming and fiddly
Solution Approach 1:
The patent merges the eggshell opener and yolk separator into a single integrated device. The blade that breaks the shell is positioned directly above a bowl that separates the yolk from white. This combination allows the user to crack the egg and separate the components in one continuous motion without switching tools or performing separate operations, significantly reducing the time and effort required while maintaining effective separation.
3Ease of operation
If the entire shell is removed from a cooked egg, then the egg is easier to eat, but the process is laborious and may result in shell fragments becoming lodged in the cooked white
Solution Approach 1:
The patent extracts only the necessary portion of the shell for removal while leaving the rest intact. The blade is designed to crack and remove only the top portion of the eggshell, creating a clean opening that provides access to the egg interior. This selective removal eliminates shell fragments from the edible portion while avoiding the laborious process of removing the entire shell, thus reducing contamination risk while maintaining ease of consumption.
Data Source
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AI summary
An egg opening and separating device (12) comprising a mount (22), a blade (24), and a bowl (42). The blade (24) has a curved cutting surface (31) which defines an opening (34) for receiving a liquid component of the egg and/or a lesser part of the eggshell therethrough, the curved cutting surface (31) having at least two ends (32). The bowl (42) is dimensioned to receive an egg yolk of an egg but not the egg yolk together with the whole egg white. At least part of the bowl (42) is movably securable to the mount (22) so that said at least part of the bowl (42) can move relative to the mount (22).