Flow-Thru Coating Applicator for Hard-to-Reach Viscous Surfaces
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Solution Overview
Problem
Existing methods fail to effectively apply viscous coating materials to difficult-to-access surfaces, such as the underside of aircraft carrier tie-downs, due to limitations in reaching and evenly distributing the coating.
Innovation Solution
A flow-thru liquid coating applicator with a hose fitting, a flexible blade, and a permeable cover with a filament bundle that utilizes capillary action to dispense and soak viscous coatings, allowing for efficient application to hard-to-reach areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional brush or roller is used to apply viscous coating materials, then the application process is simple, but it cannot effectively reach difficult-to-access surfaces and distribute the coating evenly
Solution Approach 1:
The applicator is divided into separate functional components: a handle for manipulation, a blade for structural support and coating distribution, and a filament bundle for capillary action. This segmentation allows each component to be optimized for its specific function, enabling the tool to reach difficult surfaces while maintaining ease of operation
Solution Approach 2:
The filament bundle extends laterally outwardly beyond the blade edges, adding a third dimension to the coating application interface. This lateral extension allows the filaments to reach into crevices and difficult-to-access areas that a flat brush or roller cannot access, while the blade provides the structural framework
2Manufacturing precision
If a porous cover is used to allow coating material to soak through via capillary action, then even distribution is achieved, but the structure becomes more complex
Solution Approach 1:
The cover is made of a permeable material that is sufficiently porous to allow viscous coating material to soak through by capillary action. This porous structure enables even coating distribution without requiring complex mechanical pumping or spraying mechanisms, achieving uniform application through the natural capillary properties of the material
Solution Approach 2:
The design replaces complex mechanical coating distribution mechanisms with capillary action driven by the porous cover material. Instead of using pumps, motors, or precision mechanical feeders, the system relies on the inherent capillary properties of the porous material to draw and distribute the viscous coating material evenly across the surface
3Adaptability or versatility
If the filament bundle extends laterally beyond the blade edges, then access to difficult surfaces is improved, but the risk of dripping increases
Solution Approach 1:
The porous cover material regulates the flow of coating material through capillary action, allowing controlled soaking through even as the filament bundle extends laterally. The porous structure maintains capillary pressure that prevents uncontrolled dripping while still enabling the filaments to reach into difficult areas and deposit coating evenly
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
Enables uniform and efficient application of viscous coatings to challenging surfaces by allowing the coating material to flow through the filament bundle and soak through the cover, ensuring consistent coverage without dripping.
Implementation Method 1
a flow-thru port adjacent the distal end of the blade provides for flow of a viscous coating material out through the opposite end portions of the filament bundle
Data Source
AI summary
A flow-thru liquid coating applicator comprises a handle and an applicator head including a blade having a filament bundle extending crosswise adjacent the distal end of the blade. A cover surrounds the distal end of the blade and a substantial portion of the length of the blade and has side openings through which opposite end portions of the filament bundle extend.