Segmented Brush Head for Multi-Plank Finish Application
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Solution Overview
Problem
Existing finish applicators struggle to simultaneously apply liquid finishes to multiple planks while ensuring coverage on both upper facets and opposed side facets.
Innovation Solution
A brush head with multiple sets of elongate bristles attached to a plate, combined with a rod for user handling, allows for simultaneous application of liquid finish to multiple planks by positioning bristles in gaps between planks, ensuring coverage on upper and side facets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a traditional single-set bristle applicator is used, then the device complexity is low, but it cannot simultaneously apply finish to multiple planks including opposed side facets
Solution Approach 1:
The brush head is segmented into multiple sets of elongate bristles (at least two sets), with each set positioned to reach into gaps between planks. This segmentation allows different bristle sets to simultaneously contact different planks and facets, enabling multi-plank coverage while maintaining manageable structural complexity through modular bristle organization.
Solution Approach 2:
The applicator transitions from a single-plane bristle arrangement to a multi-dimensional configuration where bristle sets extend in opposite directions from the plate. This dimensional expansion allows bristles to reach into gaps between planks and contact opposed side facets simultaneously, adding vertical and lateral coverage dimensions beyond traditional single-direction applicators.
2Area of stationary object
If multiple bristle sets are added to cover multiple planks, then the finish coverage area increases, but the ease of operation decreases due to positioning difficulty
Solution Approach 1:
Multiple sets of elongate bristles are merged into a single integrated brush head assembly attached to one plate. This consolidation allows the user to operate one unified tool rather than multiple separate applicators, simplifying the operation while maintaining the combined coverage area of all bristle sets working in unison across multiple planks.
Solution Approach 2:
The brush head is designed as a universal applicator where multiple bristle sets serve multiple functions simultaneously - each set can reach different gaps between planks while collectively covering both upper facets and opposed side facets. This multi-functionality allows a single device to perform what would otherwise require multiple specialized applicators.
3Manufacturing precision
If bristles are positioned to reach into gaps between planks, then the finish application completeness improves, but the device complexity increases
Solution Approach 1:
Different sets of elongate bristles are positioned with specific local qualities - each set is oriented to reach into specific gaps between planks and contact specific facets. This localized bristle arrangement ensures that each area of the plank assembly receives appropriate finish application, achieving uniform and complete coverage through targeted bristle positioning rather than uniform distribution.
Data Source
AI summary
A plank finish applicator assembly for simultaneous application of finish to multiple planks includes a brush head to which a rod is attached. The brush head comprises a plurality of bristles having a plurality of recesses extending into its lower face and between its front and rear edges to define at least two sets of elongate bristles. At least one opposed edge of the plurality of bristles comprises a set of elongate bristles. The recesses and the sets of elongate bristles have widths substantially equivalent to those of a plank in a field of planks and a gap or a channel that is defined by adjacently positioned planks, respectively. The rod is used to dip the bristles into liquid finish and to motivate the brush head across the field to apply the liquid finish to upper and opposed side facets of the planks.