Brush Storage Device Using Tapered Flexible Container

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Solution Overview

Problem

Existing storage devices for paint brushes fail to prevent paint hardening between the bristles, leading to poor painting quality and increased costs due to complex and expensive constructions, while also posing environmental hazards from liquid cleaning solutions.

Innovation Solution

A flexible plastic container with a tapered section that provides a snug, airtight fit for different brush sizes, expelling air and paint residues, and featuring a more rigid material for easy insertion and handling, along with a tearing line for easy removal, made from materials resistant to paint chemicals.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a flexible container is used to store the paint brush, then the container is inexpensive and easy to use, but the paint hardens between the bristles due to oxygen availability

Engineering Contradiction:
Improvecontainer costVSAvoidbrush quality maintenance
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The patent uses a flexible container made of plastic film to store the paint brush. The flexible nature of the container allows it to conform to the brush shape while providing a barrier that limits oxygen access to the paint between bristles, preventing hardening without requiring complex rigid structures

Inventive Principle:
Principle #30Flexible shells and thin films

Solution Approach 2:

The flexible container creates a restricted environment around the brush bristles that limits oxygen availability. By reducing oxygen access in the space between bristles, the container prevents oxidative hardening of the paint while maintaining brush flexibility and usability

Inventive Principle:
Principle #39Inert atmosphere (Inert environment)

2Reliability

If liquid is added to the container to prevent paint hardening, then the brush remains fresh, but environmental hazards increase and cleaning complexity increases

Engineering Contradiction:
Improvebrush freshnessVSAvoidenvironmental hazard
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The invention removes the harmful liquid component from the storage system entirely. Instead of using liquid to prevent hardening, the flexible container alone provides sufficient protection by limiting oxygen access, thereby eliminating environmental hazards associated with liquid cleaners while maintaining brush freshness

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent employs a disposable flexible container that is inexpensive and single-use. The container prevents paint hardening through its physical barrier properties alone, eliminating the need for expensive, environmentally hazardous liquid cleaners while providing effective brush protection

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

3Reliability

If a rigid container with removable lid is used, then the brush is isolated from ambient environment, but the device complexity and cost increase

Engineering Contradiction:
Improveenvironmental isolationVSAvoidcontainer structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces rigid containers with a flexible plastic film container. The flexible material provides effective environmental isolation by conforming to the brush and creating a tight seal, while eliminating the complexity of lids, hinges, and rigid structural components

Inventive Principle:
Principle #30Flexible shells and thin films

Solution Approach 2:

Instead of using a rigid container with a removable lid that requires assembly and disassembly, the invention uses a flexible container that is opened by folding back the closure flap. This inverted approach simplifies the structure while maintaining effective environmental isolation of the brush

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

4Ease of operation

If the container volume is large to accommodate the brush, then the brush fits comfortably, but oxygen availability increases causing paint hardening

Engineering Contradiction:
Improvebrush accommodationVSAvoidpaint hardening prevention
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The flexible container is designed to wrap closely around the brush, minimizing the air volume between the container walls and the brush bristles. This close fit accommodates the brush comfortably while severely limiting oxygen availability to prevent paint hardening

Inventive Principle:
Principle #30Flexible shells and thin films

Solution Approach 2:

The container features an asymmetric design with a tapered section that provides a snug fit for the brush head. This asymmetric shaping ensures minimal air space around the bristles while maintaining easy insertion and removal of the brush

Inventive Principle:
Principle #4Asymmetry

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 solution effectively maintains brush flexibility and softness over extended periods without the need for cleaning, reducing environmental impact and costs by using a single device for various brush sizes and preventing paint hardening, thus ensuring consistent painting quality.

Implementation Method 1

the flexible plastic film has properties allowing a snug fit with the brush head and providing a frictional resistance against movement of the brush head

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentEP3377329B1Storage device for a brush
Publication Date: 2020.02.12 GOLLER IPR APS
  • EP3377329B1 patent drawingFigure 1A~3B
  • EP3377329B1 patent drawingFigure 4~5
  • EP3377329B1 patent drawingFigure 6A~6B

AI summary

The invention relates to storage device for a brush, the storage device comprising a flexible plastic container comprising an inside face and an outside face, where the plastic container comprises a tapered area between a first wider end towards a second narrower end and where the tapered area on the inside face has a dimension allowing a fit with one or more sizes of brush heads.