Flexible Rake-Like Mascara Brush Head for Product Loading
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Solution Overview
Problem
Conventional cosmetic applicator brushes tend to accumulate cosmetic product near the core instead of the surface, making it difficult to apply effectively to eyelashes or eyebrows, as the wiper design pushes product away from the free ends toward the core during withdrawal from the vial.
Innovation Solution
A molded cosmetic applicator brush with rake-like teeth that are flexible and designed to bend during withdrawal from the vial, allowing tines to scoop up product from the core and return it to the surface, ensuring a higher volume of product is available at the free ends for application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional brushes are withdrawn through a wiper, then the brush structure is simple and easy to manufacture, but cosmetic product accumulates near the core instead of the surface
Solution Approach 1:
The brush teeth are designed with flexible posts that allow dynamic movement during withdrawal through the wiper. The posts bend to accommodate the wiper passage and then return to their original position, actively scooping product from the core to the surface during the withdrawal motion.
Solution Approach 2:
The invention changes the physical state and position of the brush teeth by making them flexible rather than rigid. This parameter change allows the teeth to bend during wiper passage and subsequently return to scoop product, transforming the static brush structure into a dynamic product-loading mechanism.
2Productivity
If conventional brushes have straight teeth, then manufacturing is simple, but product delivery to lashes is inefficient
Solution Approach 1:
The teeth transition from a static straight configuration to a dynamic structure that bends during withdrawal and returns to scoop product. This dynamic motion enhances product delivery efficiency without requiring complex manufacturing processes.
Solution Approach 2:
The flexible teeth perform self-service by automatically scooping product from the core to the surface during the natural withdrawal motion through the wiper. The structure uses the withdrawal motion itself to load the product, eliminating the need for additional loading mechanisms.
3Quantity of substance
If the wiper removes excess product from the brush surface, then excess product is controlled, but product is pushed toward the core making it unavailable for application
Solution Approach 1:
The flexible teeth dynamically respond to the wiper passage by bending and then returning to their original position. This return motion actively scoops product from the core area (where the wiper pushed it) back to the surface, ensuring product availability at the free ends for application.
Solution Approach 2:
The invention converts the harmful effect of the wiper pushing product toward the core into a beneficial scooping action. The teeth use the space created by the wiper passage to scoop product from the core and deliver it to the surface, transforming the wiper's unintended product displacement into an effective product loading mechanism.
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 brush effectively loads and delivers more cosmetic product to the surface, enhancing application efficiency and providing a volumizing effect by maintaining product at the free ends of the teeth, improving make-up definition and volume on lashes or brows.
Implementation Method 1
the post of each of the plurality of the teeth is flexible to permit the teeth to bend as the brush head is withdrawn from the product reservoir through the wiper orifice
Data Source
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AI summary
A cosmetic package is provided with an applicator brush head that has rake-like teeth extending from the core of the brush head. Each tooth has a flexible vertical post extending from the brush core to a horizontal beam. Several tines extend vertically from the beam to free ends. When the brush is drawn through a wiper in the product vial, the flexible vertical post allows the rake teeth to bend such that the tines pick up cosmetic product deposited at or near the core of the brush. As the brush head leaves the wiper, the rake-like teeth return to an upright position carrying the cosmetic product at or near the free ends of the tines.