Elastic Teat Cup Liner With Wave Structure for Vacuum Peak Relief

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Solution Overview

Problem

Existing teat cup inserts for dairy animals face challenges in accommodating a wide range of teat sizes, leading to issues such as premature detachment, incomplete milking, and adverse physiological effects due to negative pressure peaks, often requiring complex and costly solutions that increase maintenance and operational complexity.

Innovation Solution

A teat cup insert with a wave-like structure that allows for a single piece design, featuring varying wall thicknesses and deformability, ensuring reliable adhesion and adaptability to different teat sizes, reducing negative pressure peaks, and minimizing mechanical force on the teat.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a conventional teat cup insert with uniform wall thickness is used, then the manufacturing process is simple, but it cannot adapt to different teat sizes and causes premature detachment

Engineering Contradiction:
Improveadaptability to different teat sizesVSAvoidstructural complexity of teat cup insert
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies local quality by varying the wall thickness of the teat cup insert at different locations. The insert has a first wall thickness in the head region and a second, greater wall thickness in the tube region, allowing each section to be optimized for its specific function while maintaining overall structural integrity and adaptability to different teat sizes.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent implements dynamics by making the teat cup insert deformable through the varied wall thickness design. The insert can dynamically adapt its shape and dimensions to match different teat sizes during the milking process, improving attachment reliability without requiring multiple fixed-size inserts.

Inventive Principle:
Principle #15Dynamics

2Reliability

If high negative pressure is applied to ensure tight adhesion, then the sealing is improved, but adverse physiological effects occur on the teat

Engineering Contradiction:
Improveadhesion reliabilityVSAvoidadverse physiological effects on teat
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies parameter changes by modifying the wall thickness distribution and elastic properties of the teat cup insert. This allows the insert to maintain reliable adhesion through its deformable structure rather than relying solely on high negative pressure, thereby reducing adverse physiological effects on the teat while ensuring proper sealing.

Inventive Principle:
Principle #35Parameter changes

3Adaptability or versatility

If complex solutions are used to accommodate different teat sizes, then the adaptability is improved, but maintenance and operational complexity increase

Engineering Contradiction:
Improveaccommodation of different teat sizesVSAvoidoperational simplicity
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The patent implements universality by designing a single teat cup insert structure that can accommodate multiple teat sizes through its deformable, varied wall thickness design. This eliminates the need for multiple specialized inserts or complex adjustment mechanisms, simplifying both operation and maintenance while maintaining broad adaptability.

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

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 wave-like structure enhances teat cup attachment reliability, reduces negative pressure peaks, and improves milking efficiency across a wider range of teat sizes, minimizing operational effort and adverse effects on the animal.

Implementation Method 1

it adheres to the teat through static friction and the effect of the operating vacuum prevailing beneath the teat

Methodology Applied
Scientific EffectStatic friction: Friction

Implementation Method 2

the effect of the operating vacuum prevailing beneath the teat, which is transmitted through the elastic teat cup insert

Methodology Applied
Scientific EffectVacuum: Vacuum

Implementation Method 3

a corresponding massaging effect on the teat is achieved by pressing the elastically deformed section of the tube area against the teat

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Implementation Method 4

the corresponding section of the tube area 'unfolds' due to the inherent elasticity of the teat cup insert and releases the flow channel

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentEP4351323B1Elastic teat cup liner
Publication Date: 2025.08.06 JAKOB MAIER & WILFRIED HATZACK ERFINDER
  • EP4351323B1 patent drawingFigure 1A~1B
  • EP4351323B1 patent drawingFigure 1C~1D
  • EP4351323B1 patent drawingFigure 1E~1F

AI summary

An elastic teat cup liner (100) or a rubber teat has a top region (120) which has an undulating structure (140) that surrounds the teat insertion opening (150). As a result, the deformation behaviour in the region of the teat insertion opening can be improved, so that a simpler attachment of the teat cup with higher adhesive force and less constriction can be achieved. Furthermore, the undulating structure can serve as a valve in order to reduce vacuum peaks during the milking process.