Pen-Type Applicator for Intricate Hazardous Material Coating
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Solution Overview
Problem
Existing pen-type applicators struggle to effectively apply hazardous materials to intricate geometries, such as blind holes, through holes, and crevices, due to limitations in wick stiffness, flow regulation, and wick positioning.
Innovation Solution
The development of pen-type applicators with enhanced features, including a support tube to increase wick stiffness, mechanisms for regulating the volume of flow, and the ability to position the wick at a nonzero angle relative to the applicator housing, allowing for improved access and application to complex surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional cotton balls, Q-tips, rags, or sponges are used to apply coating solution, then the coating can be applied to scratched areas, but excessive quantities of coating solution are applied resulting in spillage and hazardous conditions
Solution Approach 1:
The patent transforms the coating application process from free-flowing liquid application to controlled dispensing through a pen-type applicator with regulated flow parameters. The applicator uses a felt tip or wick mechanism that limits the coating solution flow rate, preventing excessive application and spillage while maintaining effective coverage of scratched areas.
Solution Approach 2:
The patent introduces a pen-type applicator as an intermediary device between the coating solution container and the scratched surface. This intermediary controls the transfer of coating solution, using a regulated flow mechanism and absorbent tip to deliver precise amounts of coating material, eliminating the need for direct handling with cotton balls or rags.
2Ease of operation
If conventional applicators are used to apply hazardous materials, then coating application is simple, but user safety is compromised due to direct contact with corrosive materials
Solution Approach 1:
The patent introduces a pen-type applicator as an intermediary device between the coating solution container and the scratched surface. This intermediary controls the transfer of coating solution, using a regulated flow mechanism and absorbent tip to deliver precise amounts of coating material, eliminating the need for direct handling with cotton balls or rags.
Solution Approach 2:
The patent transforms the coating application process from free-flowing liquid application to controlled dispensing through a pen-type applicator with regulated flow parameters. The applicator uses a felt tip or wick mechanism that limits the coating solution flow rate, preventing excessive application and spillage while maintaining effective coverage of scratched areas.
3Ease of manufacture
If conventional batch processing techniques are used for chemical treatment, then the process is simple, but minor defects require complete reimmersion or recoating of the entire article which is time consuming and expensive
Solution Approach 1:
The patent extracts the defect repair function from the batch processing system by providing a targeted applicator that can be used on individual scratched areas. This allows selective application of coating solution only where needed, rather than requiring complete reimmersion or recoating of the entire article, significantly reducing repair time and material waste.
Solution Approach 2:
The patent enables self-service defect repair by providing a portable pen-type applicator that can be directly applied to scratched areas without requiring access to batch processing equipment. The applicator allows operators to perform immediate touch-up repairs on production lines, eliminating the need to remove articles from the production flow for defect correction.
4Manufacturing precision
If rinsing is used to remove excess coating material, then surface roughness from crystals is prevented, but rinse water becomes corrosive and environmentally damaging
Solution Approach 1:
The patent employs no-rinse coating materials that are self-levelling and do not form crystals requiring water removal. The controlled application mechanism delivers precise amounts of coating solution that cure without rinsing, eliminating the generation of corrosive rinse water while maintaining smooth surface finish quality.
Solution Approach 2:
The patent changes the coating material parameters by using no-rinse formulations with modified chemical composition and application viscosity. These materials are designed to cure without water removal, preventing crystal formation through controlled evaporation and chemical reaction parameters rather than mechanical rinsing.
5Adaptability or versatility
If pen-type applicators are used for intricate geometries, then access to difficult-to-reach areas is improved, but the wick may not maintain proper positioning or stiffness
Solution Approach 1:
The patent uses composite construction for the applicator body combining rigid structural components with flexible positioning mechanisms. The applicator housing provides structural support while allowing the wick assembly to flex and adapt to intricate geometries, maintaining both stiffness for structural integrity and flexibility for access to difficult-to-reach areas.
Solution Approach 2:
The patent incorporates dynamic positioning capabilities that allow the wick to adjust its angle and position relative to the applicator housing. This enables the wick to maintain optimal contact with surfaces in intricate geometries while the applicator body maintains its structural stiffness, adapting the system's rigidity to match the requirements of different application areas.
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
These enhanced applicators enable more precise and efficient application of hazardous materials to difficult-to-reach areas, reducing waste and improving user safety and environmental protection.
Implementation Method 1
a wick movably connected to the housing and configured to transmit an axial load to the valve to move the valve from the closed position to the open position
Implementation Method 2
a valve spring configured to bias the valve towards the closed position
Implementation Method 3
the wick comprising a material suitable to receive a fluid from the discharge port and pass the fluid to a location outside the housing
Data Source
AI summary
Pen-type hazardous material applicators are provided having features useful in applying metal pretreatment material to intricate geometries, such as blind holes, through holes, rivets, crevices, chamfers, counterbores, countersinks and other difficult to access surfaces.