Flexible Guide Wire for Precision Food Coring

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Solution Overview

Problem

Existing devices for hollowing out foods, such as sausages, lack precision and versatility in creating a targeted, circular or shape-specific hollow for filling with other ingredients, often resulting in incomplete or uneven removal of contents.

Innovation Solution

A tool comprising a support beam with a slot, a pulling device, and a knife or blade that can be circular, conical, or of various shapes, allowing for precise hollowing by guiding the knife along the support beam's path, with optional barbs for easy removal of contents and interchangeable components for different diameters and shapes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If a conventional coring device is used, then the hollowing process is simple, but the precision and circularity of the hollowed shape are poor

Engineering Contradiction:
Improveprecision of hollowed shapeVSAvoidcomplexity of tool structure
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

A flexible guide wire is introduced as an intermediary element that defines the precise circular path. The cutting blade follows this guide wire, ensuring accurate circular hollowing without requiring a complex rigid guiding mechanism. The guide wire acts as a mediator between the simple pulling motion and the precise circular cutting path.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The invention changes the state of the guiding element from rigid to flexible. The guide wire can be easily inserted and removed, and its flexibility allows it to conform to the sausage shape while maintaining circular geometry. This parameter change enables precise hollowing with a simpler device structure.

Inventive Principle:
Principle #35Parameter changes

2Adaptability or versatility

If a rigid support structure is used, then the tool is stable, but it cannot adapt to different sausage shapes and sizes

Engineering Contradiction:
Improveadaptability to different food shapesVSAvoidstability of tool structure
Core Design Contradiction:
Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The guide wire is implemented as a flexible thin element that can adapt to different sausage shapes and sizes. Despite its flexibility, it maintains structural integrity and defines a stable circular path during the hollowing process. The flexibility allows adaptation to various food geometries while the tensioned state provides stability during cutting.

Inventive Principle:
Principle #30Flexible shells and thin films

Solution Approach 2:

The tool transitions from a static rigid structure to a dynamic system where the guide wire can be inserted, tensioned, and removed. The flexible guide wire dynamically adapts to the sausage shape during insertion, then maintains a stable circular configuration during cutting, and can be easily removed afterward. This dynamic behavior provides both adaptability and stability.

Inventive Principle:
Principle #15Dynamics

3Ease of operation

If the cutting blade is pulled through the food, then the hollowing is complete, but the contents are difficult to remove

Engineering Contradiction:
Improveease of content removalVSAvoidcomplexity of retrieval mechanism
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The guide wire is extracted from the food after cutting, and the hollowed contents are removed through the created opening. The flexible nature of the guide wire allows it to be easily pulled out, taking advantage of the clean circular cut to access and remove the contents without requiring complex retrieval mechanisms.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

Instead of trying to push the contents out from the cutting end, the guide wire is pulled out from the same end, and the contents are accessed and removed through the opening created by the blade. This inverted approach simplifies the retrieval process by utilizing the clean circular path already created.

Inventive Principle:
Principle #13The other way round (Inversion)

4Adaptability or versatility

If the support beam is made flexible, then it can be bent to match food shapes, but it may lack the rigidity needed for precise cutting guidance

Engineering Contradiction:
Improveability to match food shapeVSAvoidprecision of cutting path
Core Design Contradiction:
Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The guide wire is implemented as a flexible thin element that can be bent to match the sausage shape during insertion. Once in place, its tensioned state and circular configuration provide sufficient rigidity to guide the cutting blade with high precision. The flexibility is used only during insertion, while the cutting phase benefits from the stabilized circular path.

Inventive Principle:
Principle #30Flexible shells and thin films

Solution Approach 2:

The guide wire is pre-formed into a circular shape and inserted into the sausage before cutting begins. This preliminary action ensures that the cutting path is already defined with the desired circular geometry and appropriate size, allowing the blade to simply follow this pre-established path with high precision during the hollowing process.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentEP3666481B1Tool for coring foods
Publication Date: 2025.01.15 MAIER FRITZ
  • EP3666481B1 patent drawingFigure 1~3
  • EP3666481B1 patent drawingFigure 4~5
  • EP3666481B1 patent drawingFigure 6

AI summary

The invention relates to a tool for hollowing out foodstuffs along their entire elongated length in order to fill them with other foodstuffs. The foodstuff is pierced by a support bar (1) and a pulling device (22) with a point (9) on this device. Subsequently, a knife (5) guided on the outside of the support bar is pulled through the pierced foodstuff by the pulling device (22) to hollow it out. The knife, which is responsible for the desired hollowing result, is connected via a square blade (13) that runs in a slot (2) of the support bar to the pulling device (22), which runs in the cavity of the support bar (1).