Color-Indicating Clumping Animal Litter for Odor Control

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Solution Overview

Problem

Current animal litter compositions, despite using clumping agents, still require time-consuming and costly processes to remove clumped waste as the clumps can bury or split, leading to odor issues and inefficient cleaning.

Innovation Solution

A clump recognition animal litter that combines a clumping component with a color-indicating material, which agglomerates and changes color upon wetting, allowing for visual identification and easy removal of soiled litter portions from unused ones.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If clumping agents are used to improve litter composition, then the ability to clump and harden after contact with urine is improved, but the clumps can bury or split leading to odor issues and inefficient cleaning

Engineering Contradiction:
Improveclumping abilityVSAvoidodor emission
Core Design Contradiction:
StrengthVSObject-generated harmful factors

Solution Approach 1:

The patent applies color-changing indicators that react with urine to change color, providing visual detection of soiled areas. This allows users to identify and remove only the soiled portions of litter before odors become problematic, resolving the contradiction between clumping strength and odor control by enabling timely intervention.

Inventive Principle:
Principle #32Color changes

2Strength

If clumping agents are used to improve litter composition, then the ability to clump and harden after contact with urine is improved, but the removal of clumped dross becomes time-consuming when clumps bury or split

Engineering Contradiction:
Improveclumping abilityVSAvoidcleaning time
Core Design Contradiction:
StrengthVSLoss of time

Solution Approach 1:

The color-changing indicators provide immediate visual feedback when litter contacts urine, allowing users to quickly identify soiled areas without having to search through or sift through the litter. This reduces cleaning time by enabling targeted removal of only the soiled portions, while the clumping agents ensure these soiled portions remain intact as removable clumps.

Inventive Principle:
Principle #32Color changes

3Quantity of substance

If absorbent materials are used to collect urine and feces, then liquid dross absorption is improved, but identification of used litter from unused litter portions becomes difficult

Engineering Contradiction:
Improveabsorption capacityVSAvoidlitter usage identification
Core Design Contradiction:
Quantity of substanceVSDifficulty of detecting and measuring

Solution Approach 1:

The patent incorporates pH-sensitive or moisture-sensitive color indicators into the absorbent material. When the absorbent material contacts urine, the indicators change color, providing clear visual distinction between used and unused litter portions. This resolves the contradiction by maintaining high absorption capacity while adding easy visual detection capability.

Inventive Principle:
Principle #32Color changes

4Ease of manufacture

If inexpensive absorbent materials are used, then cost per cleaning is reduced, but repeated cleanings over time account for large expenditures

Engineering Contradiction:
Improvematerial costVSAvoidfrequency of cleaning
Core Design Contradiction:
Ease of manufactureVSLoss of time

Solution Approach 1:

The color-changing indicators enable users to monitor litter condition and perform partial cleanings only when necessary, extending the useful life of the litter. This reduces the frequency of complete litter replacements, lowering long-term costs despite the added indicator material, thus resolving the contradiction between initial material cost and long-term expenditure.

Inventive Principle:
Principle #32Color changes

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

Enables efficient visual identification and disposal of used litter portions, reducing odor issues and cleaning time and costs by facilitating the separation of clumped waste from dry litter.

Implementation Method 1

The clump recognition animal litter comprises a clumping component and a color indicating material. The litter clumps in response to wetness and displays a color that is distinct from the remaining dry litter.

Methodology Applied
Scientific EffectpH indicator color change: Photochromism

Implementation Method 2

These absorbent materials not only absorb liquid dross, but they aid in the identification of used litter from unused litter portions. These absorbent materials have the ability to clump and harden after contact with an aqueous liquid such as urine

Methodology Applied
Scientific EffectAbsorption: Absorption (physical)

Data Source

PatentEP2091322B1Clump recognition animal litter
Publication Date: 2019.08.14 CHURCH & DWIGHT CO INC

AI summary

A clump recognition animal litter is disclosed that enables a user to visually identify and dispose of all used litter portions from unused litter portions regardless of clump size and clump location within the litter. The clump recognition animal litter comprises a clumping component and a color indicating material. A wetted litter clumps and displays a color in response to wetness.