Particle-Filled Elastomer Toothbrush Components for Multi-Function Grip

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Solution Overview

Problem

Conventional toothbrush components made from elastomeric materials serve only a single purpose, lack aesthetic appeal, and do not enhance the manufacturing process without increasing costs.

Innovation Solution

An oral care implement featuring an elastomeric component with a transparent or translucent body and embedded particles of different colors, which can form a grip, tissue cleanser, or tooth cleaning elements, providing both functional and aesthetic benefits while maintaining cost-effectiveness.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Shape

If conventional elastomeric materials are used for toothbrush components, then the components serve their basic function, but they lack aesthetic appeal and visual interest

Engineering Contradiction:
Improveaesthetic appealVSAvoidcomponent structure
Core Design Contradiction:
ShapeVSDevice complexity

Solution Approach 1:

The patent applies composite materials by embedding opaque particles (such as glass beads, metal flakes, or colored particles) within a translucent elastomeric matrix. This creates a visually interesting component that maintains the functional properties of the elastomeric material while adding aesthetic appeal through light scattering and color effects. The composite structure resolves the contradiction by enhancing appearance without fundamentally changing the component's basic structure or function.

Inventive Principle:
Principle #40Composite materials

Solution Approach 2:

The patent utilizes color changes by incorporating opaque particles of various colors, opacities, and sizes within the translucent elastomeric material. The interaction between light and these particles creates visual effects such as scattering, absorption, and reflection, resulting in aesthetically pleasing color variations and patterns. This principle directly addresses the aesthetic appeal contradiction by transforming a plain elastomeric component into a visually attractive one through optical properties.

Inventive Principle:
Principle #32Color changes

2Adaptability or versatility

If multiple functional components are added to the toothbrush, then the functionality is enhanced, but the manufacturing cost increases

Engineering Contradiction:
Improvefunctional versatilityVSAvoidmanufacturing cost
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The patent applies universality by designing a single elastomeric component that performs multiple functions: it provides tactile feedback through its textured surface, delivers visual information through embedded particles, and maintains structural integrity as a component holder. By integrating these functions into one component rather than using separate parts, the patent enhances functional versatility while avoiding the increased manufacturing costs associated with assembling multiple components.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent merges multiple functional attributes into a single elastomeric component. The component combines structural support, tactile feedback mechanisms, and visual information display in one integrated element. This merging approach allows the toothbrush to have enhanced functionality without requiring separate parts for each function, thereby maintaining manufacturing efficiency and cost-effectiveness.

Inventive Principle:
Principle #5Merging (Combining)

3Illumination intensity

If opaque particles are embedded in translucent elastomeric material, then visual appeal and information delivery are enhanced, but the manufacturing process becomes more complex

Engineering Contradiction:
Improvevisual information deliveryVSAvoidmanufacturing process
Core Design Contradiction:
Illumination intensityVSDevice complexity

Solution Approach 1:

The patent applies parameter changes by varying the optical properties of the embedded particles - specifically their opacity, size, shape, color, and distribution density. By adjusting these parameters, the manufacturer can control the visual effects such as light scattering intensity, color perception, and overall aesthetic appearance. This allows for optimized visual information delivery while managing manufacturing complexity through parameter optimization rather than process complexity.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentEP3679829B1Oral care implement
Publication Date: 2025.12.03 COLGATE PALMOLIVE CO
  • EP3679829B1 patent drawingFigure 1
  • EP3679829B1 patent drawingFigure 2
  • EP3679829B1 patent drawingFigure 3

AI summary

An oral care implement that includes an elastomeric component and a method of forming the same. In one embodiment, the oral care implement includes a handle and a head. The elastomeric component is positioned on at least one of the handle and the head. The elastomeric component includes a body, a plurality of first particles, and a plurality of second particles. The body comprises a transparent or translucent elastomeric material. The plurality of first and second particles are embedded in the body of the elastomeric component. The plurality of first particles include a first color and the plurality of second particles include a second color. The elastomeric component may form a tissue cleanser on a rear surface of the head, an elastomeric tooth cleaning element on a front surface of the head, and/or a grip on the handle.