Mechanical Shredder Bin Indicator Flap

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Solution Overview

Problem

Conventional full bin indicators for shredder apparatuses are often expensive and prone to electrical failure, necessitating a cost-effective and reliable mechanical solution to alert users when the shredder bin has reached capacity.

Innovation Solution

A mechanical full bin indicator flap is integrated into the shredder apparatus, where the accumulation of shredded material engages a movable member that moves a visual indicator, alerting the user when the bin is full, eliminating the need for electronic components.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If electronic components are used in full bin indicators, then the indicator can detect bin capacity, but the device becomes expensive and prone to electrical failure

Engineering Contradiction:
Improvereliability of full bin indicatorVSAvoidcomplexity of indicator system
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces electronic detection systems with a purely mechanical indicator system. A movable member (flap) is positioned within the bin such that when shredded material accumulates to a certain level, it directly pushes the flap to change its position, which in turn moves a visual indicator. This mechanical substitution eliminates electronic components, reducing cost and improving reliability while maintaining the bin capacity detection function.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Loss of information

If electronic components are used in full bin indicators, then the indicator can alert users, but the cost of the device increases

Engineering Contradiction:
Improvenotification of bin capacityVSAvoidmanufacturing cost of indicator system
Core Design Contradiction:
Loss of informationVSEase of manufacture

Solution Approach 1:

The patent employs a simple mechanical flap structure made from inexpensive materials that can be easily manufactured. The flap and visual indicator are designed as low-cost components that provide reliable bin capacity notification without requiring expensive electronic sensors, microcontrollers, or display elements. This approach significantly reduces manufacturing costs while maintaining effective user notification.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

3Ease of manufacture

If a mechanical flap system is used, then the device is cost-effective, but the visual indicator must be clearly visible to users

Engineering Contradiction:
Improvecost-effectiveness of indicator systemVSAvoidvisibility of visual indicator
Core Design Contradiction:
Ease of manufactureVSIllumination intensity

Solution Approach 1:

The patent enhances the visibility of the mechanical flap indicator by incorporating color changes or high-contrast visual elements on the flap surface. The visual indicator may use bright colors, reflective surfaces, or contrasting patterns that become visible when the flap moves to indicate bin fullness. This allows the simple mechanical system to provide clear, easily noticeable notification to users without requiring electronic illumination or complex visual display mechanisms.

Inventive Principle:
Principle #32Color changes

Data Source

PatentUS7204441B1Shredder apparatus and full bin indicator
Publication Date: 2007.04.17 FELLOWES INC
  • US7204441B1 patent drawing
  • US7204441B1 patent drawing
  • US7204441B1 patent drawing

AI summary

A shredder apparatus is provided that may include a bin for receiving shredded materials and a shredder housing that contains a shredder mechanism. The shredder housing is configured to be seated upon the bin and to provide a bin access opening to allow for the deposit of articles into the bin when the shredder housing is seated upon the bin. A movable member is pivotally connected to the bin side of the shredder housing and is configured to rotate such that a portion of a visual indicator is visible by a user.