Infusion Capsule Inverting Plunger for Complete Content Ejection
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Solution Overview
Problem
Existing recycling devices are inefficient in handling and separating infusion capsules with different seal arrangements, particularly those that are intrinsically more recyclable, and often fail to fully invert the capsules, leaving content trapped.
Innovation Solution
A device comprising a base unit with a hollow cup and a plunger, where the plunger's projection inverts the capsule, rupturing the foil layer and separating the coffee or infusion from the capsule, allowing for complete ejection and separate recycling, with features like upstanding ridges for capsule alignment and a concave tip for self-centering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a plunger compresses the capsule against a flat annular surface to invert it, then the capsule contents are expelled, but the capsule may not be fully inverted and contents may remain trapped
Solution Approach 1:
The patent inverts the traditional approach by having the capsule invert into the plunger cavity rather than being compressed against a flat surface. The conical surface inside the plunger cavity actively pushes the capsule contents outward during inversion, ensuring complete emptying. This reverse inversion mechanism solves the problem of trapped contents while maintaining recycling efficiency.
2Loss of substance
If the plunger is made longer to fully invert the capsule, then more contents are expelled, but the device complexity increases
Solution Approach 1:
The patent optimizes the plunger projection length to be between 0.6 to 0.8 times the capsule height, rather than making it equal to or longer than the capsule. This parameter optimization, combined with the conical surface geometry, achieves complete content ejection without excessive length, balancing effectiveness with device simplicity.
3Adaptability or versatility
If the aperture is enlarged to accommodate different capsule designs, then versatility improves, but the capsule may not be properly positioned for inversion
Solution Approach 1:
The patent provides different aperture configurations tailored to specific capsule types (silicone-sealed capsules with smaller apertures, non-silicone capsules with larger apertures). Each aperture size is optimized for its corresponding capsule type, ensuring proper positioning and inversion effectiveness. This localized optimization achieves both versatility across capsule types and precise positioning for each type.
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 device effectively inverts and separates the contents from the capsules, enabling efficient recycling by ensuring maximum content ejection and easy separation of materials, reducing storage space and facilitating the recycling process.
Implementation Method 1
the plunger used to urge the capsule down into the aperture. The result is that the capsule inverts, rupturing the foil layer and emptying the coffee or other infusion into the base unit below the aperture
Data Source
AI summary
A device for separating infusion capsules comprises a base unit and a plunger, the base unit having a face with an aperture for receiving a body part of the capsule, the plunger comprising a projection sized to fit within the aperture, and a stop to limit how far the plunger can be pressed down onto the base unit, wherein the height of the projection beyond the stop is approximately the same as but no greater than the height of the infusion capsule, thereby to fully invert the capsule. A capsule can be placed, rim side down, on the base unit over the aperture, and the plunger used to urge the capsule down into the aperture. The result is that the capsule inverts, rupturing the foil layer and emptying the coffee or other infusion into the base unit below the aperture. The coffee (etc) and the capsule can then be removed for separate recycling. The length of the plunger substantially completely inverts the capsule when pressed, ejecting as much of the content of the infusion capsule as possible instead of allowing some to be trapped in creases in the capsule material.