Retractable Stain Applicator for Decking Gap Coverage
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Solution Overview
Problem
Existing stain/paint applicators for decking boards fail to efficiently apply stain or paint to both the flat surfaces and the narrow gaps between boards, requiring separate tools for each application.
Innovation Solution
A stain applicator with a pad frame, handle assembly, and a retractable applicator blade pad that can extend through a longitudinal slit, allowing for simultaneous application to the tops and sides of decking boards by pivoting the handle assembly to change the position of the applicator blade frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate pad-type applicators and conventional brushes are used to stain both flat surfaces and sides of decking boards, then complete coverage is achieved, but device complexity and operational convenience deteriorate due to requiring multiple tools
Solution Approach 1:
The patent combines a pad-type applicator and a brush applicator into a single integrated multi-functional applicator. The device includes a pad portion for applying stain to flat surfaces and a brush portion with bristles extending from the same base, allowing simultaneous or sequential staining of both flat surfaces and sides of decking boards through the gaps, thereby eliminating the need for separate tools
Solution Approach 2:
The applicator is designed with multiple functional components that can be used for different staining tasks. The pad portion handles flat surface application while the brush portion with flexible bristles reaches into gaps to stain the sides of boards. Both components are part of a single device that can be used for both staining and painting applications on various deck configurations
2Adaptability or versatility
If a single applicator is designed to reach through gaps to stain sides of boards, then versatility improves, but manufacturing precision and structural stability worsen due to the complex retractable mechanism
Solution Approach 1:
The brush portion is designed with flexible bristles that can dynamically adjust and extend through the gaps between decking boards during the staining process. The bristles bend and reach into the narrow spaces to apply stain to the sides of boards, then return to their original position, providing the necessary adaptability without requiring complex mechanical structures
Solution Approach 2:
The applicator utilizes flexible bristles as the medium to access narrow gaps. The bristles are made of flexible material that can bend and extend into the spaces between boards, allowing the applicator to reach areas that rigid structures cannot access, while maintaining structural integrity through the flexibility of the bristle material itself
Data Source
AI summary
A stain applicator comprising a pad frame, a handle assembly attached to an upperside thereof, and an applicator pad wherein said applicator pad includes a slit therein allowing the retraction and extension of an applicator blade frame and attached applicator blade pad to allow staining of both the tops of generally flat decking boards mounted having gaps therebetween and the sides thereof through the extension and retraction of the applicator blade frame and applicator blade pad.