Pressurized Gas Container Coupling Structure for Deformation Resistance

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Solution Overview

Problem

Existing coupling systems for pressurized gas containers, particularly in hospital settings, suffer from structural weaknesses such as deformation, lack of robustness, and interference during handling due to cantilevered designs, which are either metal or plastic-based.

Innovation Solution

A protection device with a coupling element comprising a pair of arms rotatably connected to a main body, featuring an abutment element and a rotation axis, allowing for a stable and robust attachment to a bar-shaped element without excessive cantilevered extension, using a combination of abutment surfaces and shock-absorbing coatings to enhance stability and minimize deformation risks.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Weight of moving object

If a metal rod structure is used for the coupling element, then the coupling system can be constructed in a simple and light manner, but the structure is prone to deformation under flexion stresses

Engineering Contradiction:

Improveweight of coupling elementVSAvoidresistance to deformation

Core Design Contradiction:

Weight of moving objectVSStrength

Solution Approach 1:

The coupling element is constructed as a composite structure combining a metal rod with a plastics coating. The metal rod provides the necessary mechanical strength and rigidity to resist deformation, while the plastics coating reduces weight and provides shock-absorbing properties. This composite approach resolves the contradiction between lightweight construction and deformation resistance.

Inventive Principle:

Principle #40Composite materials

2Adaptability or versatility

If the hook is configured to extend sufficiently in a cantilevered manner to define a seat for receiving tubular members, then the coupling capacity is improved, but the hook becomes readily subject to damage during use

Engineering Contradiction:

Improvecoupling capacityVSAvoiddamage resistance

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The plastics coating on the metal rod acts as a cushioning layer that absorbs shocks and stresses before they can damage the underlying metal structure. This beforehand cushioning allows the coupling element to extend in a cantilevered manner for improved coupling capacity while the coating protects against damage during use.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

3Device complexity

If the hook is integrated in the main structure of the protection cap, then the structure is more compact, but the dimensions of the hook may lead to a relatively weak structure

Engineering Contradiction:

Improvestructural integrationVSAvoidhook strength

Core Design Contradiction:

Device complexityVSStrength

Solution Approach 1:

Inventive Principle:

Principle #40Composite materials

Data Source

PatentUS12535188B2Protection device for a container for pressurized gas

Publication Date: 2026.01.27 CAVAGNA GROUP

AI summary

A protection device for a container for pressurized gas comprises a main body which is configured so as to at least partially close a valve body of the container and a coupling element being rotatably connected to the main body. The main body comprises an abutment element which extends in the direction away from the main body, the abutment element being configured in such a manner that, when the coupling element is in an open configuration, a receiving cavity is defined between the abutment element and the arms and is configured to receive a bar-shaped element.