Flexible Applicator Pad With Segmented Fingers For Contoured Surfaces
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Solution Overview
Problem
Conventional brushes, such as bristle and foam brushes, are ineffective in uniformly applying liquid coatings to contoured surfaces with broad stroke widths or undulating surfaces, particularly for low viscosity coatings.
Innovation Solution
A liquid applicator with a flexible applicator pad assembly supported by laterally extending, flexible fingers that conform to the surface, allowing for even liquid distribution across contoured surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If conventional bristle brushes are used for applying liquid coatings to broad stroke widths and undulating surfaces, then the brush can cover large areas, but the coating application becomes non-uniform
Solution Approach 1:
The applicator is divided into multiple independent fingers (at least two fingers) that can flex individually. Each finger acts as an independent coating application unit, allowing different portions of the applicator to adapt to undulations in the surface independently, thereby maintaining coating uniformity across broad stroke widths.
Solution Approach 2:
The fingers are made flexible and capable of dynamic adjustment. The fingers can flex and conform to the contours of the surface being coated, transforming from a rigid brush structure to a dynamic, adaptable structure that matches surface variations and ensures uniform coating application.
2Area of stationary object
If conventional foam brushes are used for applying liquid coatings to undulating surfaces, then the brush can cover broad areas, but uniform coverage is not achieved when the surface undulates across the stroke width
Solution Approach 1:
The foam brush is replaced with segmented fingers that can independently flex. This segmentation allows each finger to independently respond to surface undulations, maintaining coating uniformity across broad stroke widths where a single foam brush head cannot adapt.
Solution Approach 2:
The applicator transitions from a rigid foam structure to a flexible fingered structure with adjustable geometry. The fingers can change their shape and orientation based on surface contours, effectively altering the applicator's geometric parameters to match the surface being coated.
3Adaptability or versatility
If bristle brushes are used for applying low viscosity coatings, then the brush can be used for various coating types, but uniform application is ineffective
Solution Approach 1:
The applicator uses flexible fingers that can adjust their physical state and contact with the surface based on coating viscosity and surface contours. This dynamic adaptation allows the same applicator design to maintain coating uniformity across different coating viscosities by changing the flexing characteristics of the fingers.
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 flexible applicator pad assembly ensures uniform application of liquids to various surfaces, including those with undulations, by flexing with the fingers to match the surface contours, improving coverage and consistency.
Implementation Method 1
The fingers project from the base and are flexible along the length so that the fingers individually follow the contoured surface when a liquid application force is applied
Implementation Method 2
The applicator pad assembly is operable to carry liquid and is flexible at least generally with the fingers so as to follow the contoured surface during liquid application
Data Source
AI summary
A liquid applicator is configured to apply liquid to a contoured surface. The liquid applicator includes a frame with a laterally extending base and a plurality of elongated fingers spaced laterally along the base. The fingers flex to follow the contoured surface when a liquid application force is applied. The liquid applicator also includes a flexible applicator pad assembly supported on multiple ones of the fingers. The applicator pad assembly is operable to carry liquid and is flexible at least generally with the fingers so as to follow the contoured surface during liquid application.