Detachable Stop Connector for Pipe Fittings in Tight Spaces

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Solution Overview

Problem

Existing pipe fittings, particularly press fittings, are difficult to install in confined spaces due to the requirement for a significant distance between opposing pipe ends, necessitating increased space or extensive excavation, which is not feasible in certain construction scenarios.

Innovation Solution

A connector design featuring a base body with support sections and a detachable stop element that allows for insertion into pipe ends, enabling a secure connection through crimping or welding, even in tight spaces, by reducing the necessary distance between pipe ends.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a press fitting is used to connect pipe sections, then a secure connection is achieved, but a sufficiently large distance must be provided between two opposing pipe ends, requiring increased space or extensive excavation

Engineering Contradiction:

Improveconnection securityVSAvoidinstallation space

Core Design Contradiction:

ReliabilityVSArea of stationary object

Solution Approach 1:

The connector is divided into a base body and a detachable stop element that can be separated during installation. The stop element is removed before insertion and attached afterward, allowing the base body to be inserted into confined spaces between pipe ends without requiring the full fitting structure to be accessible from both sides

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The stop element, which forms the stop surface, is extracted from the base body as a separate detachable component. This allows the base body to be inserted into the pipe end in confined spaces, and the stop element is subsequently attached to provide the necessary stop surface for secure connection

Inventive Principle:

Principle #2Taking out (Extraction)

2Reliability

If a fitting with a stop surface is inserted into pipe ends, then a secure connection is achieved, but extensive excavation of the pipeline is required to provide sufficient insertion distance

Engineering Contradiction:

Improveconnection securityVSAvoidinstallation complexity

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The fitting is segmented into a base body that can be inserted into the pipe end and a detachable stop element. This segmentation allows insertion into confined spaces without extensive excavation, while the stop element provides the necessary connection security when attached

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The stop element is prepared separately before installation, allowing the base body to be inserted first into the confined space between pipe ends. The stop element is then attached in a subsequent step, simplifying the installation process by breaking it into manageable stages

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentEP4209699B1Connector for a pipe, fitting and use of a connector

Publication Date: 2025.11.26 RADIUS KELIT INFRASTRUCTURE GESMBH

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AI summary

Connection piece (100, 200) for a pipe (220, 222), in particular a plastic pipe or plastic composite pipe, comprising a base body (102, 202) with at least one support section (104, 204) for insertion into a pipe end (116, 118) of the pipe (220, 222); and at least one stop element (122, 212) detachably connectable to the base body (102, 202), which has a stop surface (130) designed to come into contact with an end face of the pipe end (116, 118) at least partially, as well as a fitting with such a connection piece (100, 200) and the use of such a connection piece (100, 200).