Conductive Plastic Tapping Fitting with Integrated Earthing

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Solution Overview

Problem

Existing tapping fittings for plastic liquid containers do not effectively dissipate electrostatic charges without additional mounting effort, and can have incomplete or incorrect connections that impair charge dissipation, leading to potential ignition risks.

Innovation Solution

A tapping fitting with an integrally constructed earthing conductor made from electrically conductive plastic, which is directly connected to the fitting housing, ensuring a material-consistent and secure electrical connection to ground potential, eliminating the need for separate handling and preventing transition resistances.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a separate insertable port and electrical conductor are used for dissipating electrostatic charge, then the electrostatic charge can be dissipated, but additional mounting effort and complex handling are required

Engineering Contradiction:
Improveelectrostatic charge dissipationVSAvoidmounting effort
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent combines the insertable port and electrical conductor into a single integrated component. The conductive insertable port is molded as one piece with an integrated electrical conductor that extends through the port housing, eliminating the need for separate components and their associated mounting steps. This integration directly resolves the contradiction by maintaining electrostatic charge dissipation functionality while eliminating additional mounting effort.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The integrated conductive insertable port serves multiple functions simultaneously: it provides the electrostatic charge dissipation path, houses the electrical conductor, and forms the structural connection between the tapping fitting and the liquid container. This multi-functionality allows a single component to replace what were previously separate elements, reducing mounting complexity while maintaining reliability.

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

2Reliability

If separate components are used for conductive connection, then the electrostatic charge dissipation can be achieved, but transition resistances may occur due to incorrect or incomplete connections

Engineering Contradiction:
Improveelectrostatic charge dissipationVSAvoidconnection quality
Core Design Contradiction:
ReliabilityVSManufacturing precision

Solution Approach 1:

By merging the electrical conductor with the insertable port housing into a single molded component, the patent eliminates multiple connection interfaces. The conductor is integrally formed within the housing material, ensuring continuous electrical contact without the risk of improper connection between separate parts. This directly addresses the manufacturing precision issue by removing the variable of manual connection quality.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent uses electrically conductive plastic material that combines insulating plastic properties with conductive characteristics. This composite material allows the housing itself to provide the electrical conduction path, eliminating the need for separate metal conductors and their associated connection issues. The conductive plastic ensures consistent electrical properties throughout the integrated component.

Inventive Principle:
Principle #40Composite materials

3Reliability

If multiple separate components are used for electrostatic charge dissipation, then the function can be achieved, but the device complexity increases

Engineering Contradiction:
Improveelectrostatic charge dissipationVSAvoidnumber of components
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges multiple previously separate components (insertable port housing, electrical conductor, and connection elements) into a single integrated conductive insertable port. This consolidation reduces the number of parts that need to be handled, stored, and assembled, directly reducing device complexity while maintaining the electrostatic charge dissipation function.

Inventive Principle:
Principle #5Merging (Combining)

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 solution enables safe and effective dissipation of electrostatic charges without additional mounting effort, enhancing operational safety by ensuring a reliable and complete electrical connection, thus preventing ignition risks.

Implementation Method 1

the conductive device has an integrally constructed earthing conductor for electrically conductive connection of the conductive device to a ground potential

Methodology Applied
Scientific EffectElectrical conduction: Conduction (electrical)

Implementation Method 2

the fitting housing is provided with a conductive device at least part of which is made from electrically conductive plastic for dissipating an electrostatic charge

Methodology Applied
Scientific EffectElectrostatic charge dissipation: Electrostatics

Data Source

PatentUS9527719B2Tapping fitting for a transport and storage container for liquids and transport and storage container with such tapping fitting
Publication Date: 2016.12.27 PROTECHNA SA
  • US9527719B2 patent drawing
  • US9527719B2 patent drawing
  • US9527719B2 patent drawing

AI summary

A tapping fitting, particularly a flap or ball cock, with a fitting housing made from plastic for connection to a drain spigot of a plastic container for liquids, particularly an interior container of a transport and storage container. The fitting housing is provided with a conductive device at least part of which is made from electrically conductive plastic for dissipating an electrostatic charge. The conductive device is the conductive device has an integrally conformed earthing conductor for the electrically conductive connection of the conductive device to a ground potential and is also connected integrally with the fitting housing.