Disk Brush Angular Offset via Extraction Rod
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Solution Overview
Problem
Existing mascara applicator brushes face challenges in achieving uniform bristle arrangements and maintaining angular offsets between discs without relying on keyed systems, which can be cumbersome and limit customization.
Innovation Solution
A cosmetic applicator brush design featuring discs with projections and indentations that maintain angular relationships independently, and an alternative method using wires to link and twist discs for desired angular configurations, allowing for customizable bristle arrangements without a keyed system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a keyed system is used to maintain angular offset between discs, then the angular relationship is maintained, but the device complexity increases and customization is limited
Solution Approach 1:
The patent removes the keyed system from the disc assembly, extracting the angular offset maintenance function to a separate component (the rod with angular features). This eliminates the need for keys on each disc while maintaining the angular relationship, thereby reducing device complexity while preserving manufacturing precision.
Solution Approach 2:
The rod is designed with angular features that serve multiple functions: it maintains angular offset between discs, provides structural support, and enables customization without requiring individual keys for each disc. This universal approach replaces the specialized keyed system, reducing overall complexity while maintaining precision.
2Manufacturing precision
If a keyed system is used to maintain angular offset between discs, then the angular relationship is maintained, but the adaptability for customization decreases
Solution Approach 1:
The rod with angular features serves as a universal component that can accommodate different disc configurations and angular offsets. This design allows for easy customization of bristle arrangements without requiring modifications to individual discs, thereby enhancing adaptability while maintaining manufacturing precision.
Solution Approach 2:
The patent allows for variation in angular parameters by modifying the rod's angular features rather than changing each disc's key. This enables flexible customization of angular offsets and bristle arrangements, improving adaptability while maintaining precise angular relationships through controlled parameter changes.
3Manufacturing precision
If multiple disc-specific keying elements are used, then each disc can be precisely positioned, but the ease of manufacture decreases
Solution Approach 1:
The patent extracts the positioning function from multiple disc-specific keys to a single rod with angular features. This reduces the number of components that need to be manufactured and assembled, thereby improving ease of manufacture while maintaining precise disc positioning through the rod's angular features.
Solution Approach 2:
Multiple individual keying functions are merged into a single rod component with integrated angular features. This consolidation reduces the number of parts, simplifies the assembly process, and improves ease of manufacture while maintaining the same positioning precision that would otherwise require multiple separate keys.
Data Source
AI summary
A cosmetic applicator brush including a plurality of discs assembled relative to one another with each disc having a body with a plurality of bristles and/or combs extending radially therefrom. The adjacent discs are maintained at an angular relationship with respect to one another independent of a disc specific keying element.