Blade Removal Tool Interlock for Slicer Safety

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Solution Overview

Problem

The removal and installation of blades from food product slicers are hazardous processes, as existing methods do not ensure safe positioning of the user and often require single-handed operation, increasing the risk of unintentional contact with the blade.

Innovation Solution

A safety blade mounting and removal system that requires sequenced movement of both the blade engagement actuator and the blade unlocking actuator, ensuring the blade is securely attached or detached using a tool that encourages safe hand positioning, utilizing a blade removal tool with a tool base, blade engagement assembly, and blade unlocking assembly to interlock and release the blade from the slicer.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a traditional blade removal method is used, then the operation is simple and quick, but the user safety is compromised due to risk of accidental contact with the blade

Engineering Contradiction:
Improveuser safetyVSAvoidblade removal system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

A blade removal tool is introduced as an intermediary device between the user and the blade. The tool includes a blade engagement assembly with retainers that securely hold the blade, and a blade unlocking assembly that controls the release mechanism. This intermediary tool allows the user to remove and install blades without direct hand contact with the cutting edge, thereby improving safety while maintaining manageable system complexity through a dedicated handheld device.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If a blade removal tool with sequenced actuation is used, then the user safety is improved by requiring both hands in safe positions, but the ease of operation is reduced due to the need for sequenced movement of multiple actuators

Engineering Contradiction:
Improveuser safetyVSAvoidblade removal operation simplicity
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The blade engagement retainers are preliminarily positioned to engage the blade before the unlocking actuator is activated. The system requires the engagement actuator to be moved to a retaining position first, which preliminarily secures the blade to the tool, before the unlocking actuator can be activated to release the blade from the slicer. This preliminary action ensures the blade is safely secured to the tool with both hands in safe positions before any release operation occurs, improving safety while maintaining operational simplicity through a clear two-step sequence.

Inventive Principle:
Principle #10Preliminary action

3Reliability

If the blade engagement assembly and blade unlocking assembly are cooperatively linked, then the reliability of safe blade removal is improved by preventing premature unlocking, but the device complexity increases due to the interlocked actuation mechanism

Engineering Contradiction:
Improveblade removal safety controlVSAvoidactuator linkage mechanism complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The actuator linkage mechanism employs dynamic interlocking where the blade unlocking actuator is mechanically linked to the blade engagement actuator. The linkage is designed such that the unlocking actuator cannot be activated unless the engagement actuator is already in the retaining position. This dynamic constraint ensures that the blade is securely engaged before unlocking can occur, improving safety control while managing complexity through a mechanical interlock that automatically enforces the correct operation sequence without requiring additional control systems.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentEP3471931B1A blade mounting and removal system for a product slicer
Publication Date: 2023.12.13 GLOBE FOOD EQUIPMENT CO
  • EP3471931B1 patent drawingFigure 1
  • EP3471931B1 patent drawingFigure 2a
  • EP3471931B1 patent drawingFigure 2b~2c

AI summary

A blade mounting and removal tool, and system, for safely removing a blade from a food product slicer.