Nested Conduit Coupler Structure for Pressure-Resistant Stub Ends

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Solution Overview

Problem

Existing methods for joining industrial hoses or pipes at coupling joints often fail to securely retain the flared ends and liners, leading to potential rupture, bending, or separation under external forces or pressure.

Innovation Solution

A conduit joint system that includes a metallic coupler with flange receiving portions and a body portion to securely retain the flared ends and joined liners of two metal conduits, ensuring a fixed and protected connection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional joining methods are used to connect conduits at coupling joints, then the conduits can be joined together, but the flared ends and liners are not securely retained and may rupture, bend, or separate under external forces or pressure

Engineering Contradiction:
Improveconnection reliabilityVSAvoidretention strength
Core Design Contradiction:
ReliabilityVSStrength

Solution Approach 1:

The coupler is divided into an outer coupler and an inner coupler that nest within each other. The inner coupler is received within the outer coupler, creating a nested structure that provides secure retention of flared ends and liners while maintaining connection reliability under external forces and pressure.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The coupling joint is segmented into multiple functional components: an outer coupler with first and second openings, an inner coupler with corresponding openings, and fastening members. This segmentation allows each component to perform its specific function - the outer coupler provides structural support, the inner coupler secures the liners, and the fastening members join the two couplers together, collectively achieving both connection reliability and retention strength.

Inventive Principle:
Principle #1Segmentation

2Ease of manufacture

If the flared ends are spaced apart to allow liner joining, then the liners can be joined together, but the flared ends require secure retention to prevent separation

Engineering Contradiction:
Improveliner joining easeVSAvoidcoupler structure complexity
Core Design Contradiction:
Ease of manufactureVSDevice complexity

Solution Approach 1:

The nested coupler structure allows the inner coupler to be received within the outer coupler, creating a compact design that maintains flared ends in a spaced-apart configuration for easy liner joining while preventing separation through the combined retention of both couplers.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The coupler assembly serves multiple functions: the outer coupler provides structural support and retention, the inner coupler secures the liners, and both couplers work together to maintain the spaced-apart configuration of flared ends. This multi-functionality achieves both ease of manufacture for liner joining and prevention of separation without requiring excessive structural complexity.

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

Data Source

PatentUS12297938B2Conduit coupler for coupling stub end conduits
Publication Date: 2025.05.13 ETHYLENE CORP
  • US12297938B2 patent drawing
  • US12297938B2 patent drawing
  • US12297938B2 patent drawing

AI summary

A conduit joint system securing ends of two conduits together includes first and second conduits having first and second flared ends and first and second liners protruding from the flared ends. The liners are joined together so that the flared ends are opposing and spaced from one another and portions of the liners are between the flared ends. An external coupler is configured to receive the flared ends and includes (i) a first flange receiving portion configured to receive the first flared end, (ii) a second flange receiving portion configured to receive the second flared end, and (iii) a body portion extending between the flange receiving portions and configured to receive the portions of the liners between the flared ends. With the liners joined together and with the external coupler receiving the flared ends, and the portions of the liners, the external coupler secures the first and second conduits together.