Segmented Litter Bags in Cat Box Tray

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Solution Overview

Problem

Cat litter boxes are often messy, difficult to manage, and remain dirty despite scooping out clumps, with litter being sold in large, cumbersome bags that are hard to handle and dispose of.

Innovation Solution

A litter box design featuring a tray with moveable side walls and layers of litter contained in separate plastic bags, allowing each layer to be easily exposed and replaced, keeping the box clean and eliminating the need to handle heavy bags or dirty litter.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If litter is contained in large bags for sale and transport, then storage and distribution are efficient, but handling and disposal become difficult and messy

Engineering Contradiction:

Improvelitter quantityVSAvoidhandling ease

Core Design Contradiction:

Quantity of substanceVSEase of operation

Solution Approach 1:

The patent divides the large bag of litter into multiple smaller individual bags, each containing a specific amount of litter. This segmentation allows users to handle only the necessary amount (one small bag at a time) rather than managing the entire large bag, significantly improving ease of operation while maintaining efficient storage and distribution of the total litter quantity.

Inventive Principle:

Principle #1Segmentation

2Duration of action of moving object

If litter layers are used to extend litter box duration, then usage time increases, but separating layers without contamination becomes difficult

Engineering Contradiction:

Improvelitter box durationVSAvoidcross-contamination

Core Design Contradiction:

Duration of action of moving objectVSObject-affected harmful factors

Solution Approach 1:

The patent introduces individual plastic bags as intermediary barriers between different litter layers. Each bag is lifted over the side walls of the tray to expose a clean litter layer underneath, preventing direct contact between used and fresh litter. This intermediary mechanism extends the litter box duration while effectively eliminating cross-contamination between layers.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Volume of moving object

If side walls are extended to increase box volume, then capacity increases, but structural stability may be compromised

Engineering Contradiction:

Improvebox volumeVSAvoidstructural stability

Core Design Contradiction:

Volume of moving objectVSStability of the object's composition

Solution Approach 1:

The patent implements moveable upper portions of side walls that can transition between retracted and upright positions. When upright, they provide extended volume for additional litter layers; when retracted, they maintain structural stability. This dynamic design allows the box to adapt its volume based on usage needs while preserving structural integrity through the ability to reconfigure the side wall configuration.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS8978588B2Cat litter box

Publication Date: 2015.03.17 SIMON DAVID A

AI summary

A litter box includes a tray having a bottom wall and side walls extending upward from the bottom wall. At least one of the side walls has an upper portion that is moveable from a retracted position to an upright position. A plurality of bags are in the tray, each containing a layer of litter. The layers of litter are separated from one another by the bags. In another embodiment, the plurality of bags of litter are provided in an outer bag that can be placed into a tray. In use, upper portions of each bag are lifted over the side walls to expose the litter in that bag. After use, the entire layer of litter can be removed by removing the associated bag. The next layer of litter is then exposed for use.