Constricted Cat Diaper Core for Vertical Movement Stability

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Solution Overview

Problem

Existing pet diapers, particularly designed for cats, tend to displace or detach during vertical movements due to the unique body mechanics of cats, which involve frequent stretching and contraction of the stomach and back regions.

Innovation Solution

A cat diaper design featuring a constricted absorbent core that tapers inward in the lateral direction, with specific edge configurations and fastening mechanisms to secure the diaper in place, including leg opening portions and a tail hole, to accommodate the cat's vertical movements and prevent displacement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a conventional pet diaper design is used, then it can be put on cats, but the diaper is displaced or detached during vertical movements due to skin stretching and contracting

Engineering Contradiction:

Improvediaper stabilityVSAvoidaccommodation of body movement

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The absorbent core is divided into a first absorbent core and a second absorbent core that are separate from each other. The first absorbent core is positioned on the stomach side and the second absorbent core is positioned on the back side, allowing independent movement and adaptation to body shape changes during vertical movements

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The diaper design allows the absorbent cores and body portions to dynamically adjust to the cat's body movements. The separate positioning of absorbent cores enables them to move independently with skin stretching and contracting, maintaining diaper stability during vertical movements

Inventive Principle:

Principle #15Dynamics

2Stability of the object's composition

If the absorbent core is positioned centrally, then it provides uniform coverage, but it does not accommodate the cat's vertical movements effectively

Engineering Contradiction:

Improveabsorbent core positioningVSAvoidmovement accommodation

Core Design Contradiction:

Stability of the object's compositionVSEase of operation

Solution Approach 1:

The absorbent core is segmented into two separate cores positioned at different locations (stomach side and back side). This segmentation allows each core to independently accommodate local body movements while maintaining overall diaper stability and effective coverage

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the diaper have different functional characteristics. The first absorbent core is positioned to accommodate stomach area movements while the second absorbent core accommodates back area movements, providing localized adaptation to vertical movements

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS12599509B2Cat diaper

Publication Date: 2026.04.14 UNI CHARM CORP

AI summary

A cat diaper has a lateral direction along a waistline of a cat and a longitudinal direction orthogonal to the lateral direction, and includes: a body portion that includes an absorbent core, and has a stomach region, a crotch region, and a back region, and a fastening tape that extends from each side of the body portion in the lateral direction, and joins the stomach region and the back region, the absorbent core having a constricted portion that tapers toward an inner side of the absorbent core in the lateral direction, and a stomach-side end of an innermost edge of the constricted portion in the lateral direction being positioned between a center of the absorbent core in the longitudinal direction and a back side of the cat diaper.