Compressible Dog Chew with Elastomeric Bladder and Hard End Caps

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Solution Overview

Problem

Existing dog chews often lack structural integrity, are prone to breakage during handling and shipping, and may not cater to the varying chewing preferences of dogs, including those with dental issues, and have a short shelf life.

Innovation Solution

A molded dog chew design featuring a softer, compressible central portion with an elastomeric bladder and harder, more durable end caps, connected by a shaft, allowing for easy assembly and attachment methods like insert molding, adhesive bonding, or mechanical attachment, with the central portion being shaped like sports balls for added appeal and functionality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If a single hard material is used for the entire chew toy, then durability is improved, but it becomes unsuitable for dogs with dental issues or young dogs with developing teeth

Engineering Contradiction:
ImprovedurabilityVSAvoidsuitability for different dog groups
Core Design Contradiction:
StrengthVSAdaptability or versatility

Solution Approach 1:

The chew toy incorporates different materials with different hardness levels in different regions: harder material (e.g., nylon) for the end caps to provide durability, and softer material (e.g., polyurethane) for the central portion to be gentle on teeth and gums. This allows the same product to suit dogs with varying dental conditions and chewing preferences.

Inventive Principle:
Principle #3Local quality

2Ease of operation

If a single soft material is used for the entire chew toy, then comfort for dogs with dental issues is improved, but structural integrity and resistance to breakage during handling and shipping deteriorates

Engineering Contradiction:
Improvecomfort for dogs with dental issuesVSAvoidstructural integrity
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The chew toy incorporates different materials with different hardness levels in different regions: softer material (e.g., polyurethane) for the central portion to be comfortable for dogs with dental issues, and harder material (e.g., nylon) for the end caps to provide structural integrity and resistance to breakage during handling and shipping.

Inventive Principle:
Principle #3Local quality

3Object-generated harmful factors

If edible materials are used for the chew toy, then health benefits are improved, but shelf life deteriorates requiring frequent replacement

Engineering Contradiction:
Improvehealth benefitsVSAvoidshelf life
Core Design Contradiction:
Object-generated harmful factorsVSDuration of action of stationary object

Solution Approach 1:

The chew toy combines natural chewable materials (like rubber or polyurethane) with synthetic durable materials (like nylon). The natural material portion provides health benefits and is safe for chewing, while the synthetic nylon portions provide durability and extended shelf life, eliminating the need for frequent replacement.

Inventive Principle:
Principle #40Composite materials

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

The design provides a durable, long-lasting chew that accommodates different chewing preferences, reduces breakage, and offers enhanced oral health benefits through varied textures and shapes, while the elastomeric bladder allows for compressibility and ease of use.

Implementation Method 1

the central portion may comprise a composite of an outer layer, which overlies a bladder, the bladder overlying but spaced from the shaft

Methodology Applied
Scientific EffectCompressibility: Elasticity

Data Source

PatentEP2203043B1Pet chew including compressible central portion
Publication Date: 2019.09.18 TFH PUBLICATIONS INC
  • EP2203043B1 patent drawingFigure 1~2
  • EP2203043B1 patent drawingFigure 3~4
  • EP2203043B1 patent drawingFigure 5~6

AI summary

The present disclosure provides an animal chew comprising an elongated central portion of a first material and a pair of end caps of a second material. The end caps may be connected by a shaft and may vary from the central portion or from each other by one or more properties such as, color, texture, hardness, toughness, functionality, flavor, odor or moisture level. The central portion of the dog chew may comprise a bladder, or a composite of materials such as one or more layers overlying the bladder, having an attractive design in the shape and/or texture of, e.g. a sports ball. The composite may comprise a soft or even fibrous cover overlying an elastomeric bladder, the bladder formed to fit relatively loosely over the shaft, the composite providing a soft and easily compressed central portion compared to the end caps.