Folded Sheet Dispenser Overfill Prevention for Reliable Dispensing

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Solution Overview

Problem

Conventional folded sheet dispensers are prone to overfilling, which compresses the stack of sheets, making it difficult to remove individual sheets and leading to unreliable dispensing due to increased friction and potential tearing.

Innovation Solution

A folded sheet dispenser equipped with an overfill prevention device featuring a pivotally connected bracket and locking element that engages and disengages based on the cover's position, preventing overfilling by allowing the bracket to move from a filling to a dispensing position when the cover is closed, reducing compressive forces on the stack.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If the dispenser is overfilled with stacked folded sheets, then the quantity of sheets increases, but the sheets become compressed and difficult to dispense due to increased friction and pressure

Engineering Contradiction:
Improvequantity of sheetsVSAvoidease of dispensing sheets
Core Design Contradiction:
Quantity of substanceVSEase of operation

Solution Approach 1:

The overfill prevention device applies preliminary anti-action by using a bracket and locking element mechanism that prevents excessive sheets from being inserted into the dispenser. The locking element engages with the bracket to physically block overfilling before it occurs, counteracting the harmful effect of compression and making dispensing difficult.

Inventive Principle:
Principle #9Preliminary anti-action

2Quantity of substance

If the stack of sheets is compressed by overfilling, then the quantity of sheets that can be stored increases, but the friction against the dispensing opening increases making dispensing unreliable

Engineering Contradiction:
Improvestorage capacityVSAvoidreliability of dispensing
Core Design Contradiction:
Quantity of substanceVSReliability

Solution Approach 1:

The device prevents the harmful compression effect before it occurs by engaging the locking element with the bracket when the maximum fill level is reached. This preliminary action stops additional sheets from being forced into the dispenser, thereby preventing increased friction and unreliable dispensing while maintaining optimal storage capacity.

Inventive Principle:
Principle #9Preliminary anti-action

3Quantity of substance

If pressure against the stack is increased by overfilling, then more sheets can be accommodated, but the sheet tabs become inaccessible and sheets may tear instead of dispensing

Engineering Contradiction:
Improvenumber of sheetsVSAvoidaccessibility of sheet tabs
Core Design Contradiction:
Quantity of substanceVSEase of operation

Solution Approach 1:

The overfill prevention device applies preliminary anti-action by physically blocking the insertion of excessive sheets through the engaged bracket and locking element. This prevents the pressure increase that would otherwise make sheet tabs inaccessible and cause sheets to tear during dispensing, while still accommodating the appropriate number of sheets.

Inventive Principle:
Principle #9Preliminary anti-action

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 overfill prevention device effectively prevents overfilling, ensuring reliable sheet dispensing by reducing compressive forces and maintaining accessibility of the sheet tabs, thus enhancing the usability and reliability of the dispenser.

Implementation Method 1

the plate engages the bracket using the force of gravity

Methodology Applied
Scientific EffectGravity: Gravitation

Data Source

PatentUS8851326B2Folded sheet dispenser with overfill prevention device
Publication Date: 2014.10.07 KIMBERLY CLARK WORLDWIDE INC
  • US8851326B2 patent drawing
  • US8851326B2 patent drawing
  • US8851326B2 patent drawing

AI summary

The present invention provides a dispenser for folded sheets having an overfill prevention device, which effectively prevents the dispenser from being overfilled with folded sheet material. The result of the present invention is that a maintainer of the dispenser will have a difficult time overfilling the dispenser.