Brush Head With Recessed Bristles For Uniform Cosmetic Application

Solution Overview

Problem

Traditional brushes fail to evenly apply solid materials like powdered cosmetics, leading to smears and streaks, and struggle to retain and transfer these materials to large surface areas efficiently.

Innovation Solution

A brush head design featuring an outer zone of bristles and an inner zone of recessed bristles with a convex configuration, forming a reservoir to retain solid materials, allowing for efficient pickup and application to surfaces, with the outer zone providing smoothing and buffing capabilities.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If traditional brushes are used to apply solid materials, then the brush structure is simple, but the application uniformity deteriorates causing smears and streaks

Engineering Contradiction:

Improveapplication uniformityVSAvoidbrush structure

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The brush head is divided into multiple zones with different bristle characteristics: a central zone with longer, denser bristles for material retention and application, and outer zones with shorter bristles for smoothing and blending. This segmentation allows each zone to perform its specific function optimally, achieving uniform application without excessive overall complexity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the brush head are given different properties: the central zone has longer, denser bristles optimized for picking up and holding solid materials, while the outer zones have shorter bristles optimized for smoothing and blending. This local differentiation resolves the contradiction by providing specialized functionality in each region rather than uniform structure throughout.

Inventive Principle:

Principle #3Local quality

2Quantity of substance

If traditional brushes are used to retain solid materials, then the brush structure is simple, but the material retention capability deteriorates

Engineering Contradiction:

Improvesolid material retentionVSAvoidbrush structure

Core Design Contradiction:

Quantity of substanceVSDevice complexity

Solution Approach 1:

The brush head is divided into multiple zones with different bristle characteristics: a central zone with longer, denser bristles for material retention and application, and outer zones with shorter bristles for smoothing and blending. This segmentation allows each zone to perform its specific function optimally, achieving uniform application without excessive overall complexity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The brush design pre-configures the central zone with longer, denser bristles that are specifically oriented and positioned to maximize solid material pickup and retention before application. This preliminary arrangement of bristles ensures the brush is ready to hold and transfer solid materials effectively without requiring additional retention mechanisms.

Inventive Principle:

Principle #10Preliminary action

3Productivity

If traditional brushes are used to apply materials to large surfaces, then the brush structure is simple, but the application efficiency deteriorates

Engineering Contradiction:

Improveapplication efficiencyVSAvoidbrush structure

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The brush head is divided into multiple zones with different bristle characteristics: a central zone with longer, denser bristles for material retention and application, and outer zones with shorter bristles for smoothing and blending. This segmentation allows each zone to perform its specific function optimally, achieving uniform application without excessive overall complexity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The brush design enables continuous application to large surfaces by maintaining material retention in the central zone while the outer zones continuously smooth and blend as the brush moves across the surface. This continuous action across different zones allows efficient coverage of large areas without repeatedly dipping or reloading the brush.

Inventive Principle:

Principle #20Continuity of useful action

Data Source

PatentUS10517383B2Brush head with recessed bristles, brush, method of making and method of using same

Publication Date: 2019.12.31 BARE ESCENTUALS BEAUTY INC

AI summary

The present invention recognizes that there exists a long felt need for brush heads and brushes having material application and buffing properties. A first aspect of the present invention is a brush head. A second aspect of the present invention is a brush including a brush head of the present invention. A third aspect of the present invention is a method of making a brush head of the present invention. A fourth aspect of the present invention is a method of making a brush of the present invention. A fifth aspect of the present invention is a method of using a brush head of the present invention. A sixth aspect of the present invention is a method of using a brush of the present invention. An additional aspect is a brush head having an outer zone of bristles and a convex inner zone of bristles.