Filter Container Closure with Separate Seal and Ring Nut

Solution Overview

Problem

Traditional filtering device containers experience issues such as spontaneous unscrewing due to vibrations, difficulty in unscrewing due to gasket adherence, and deformation under high internal pressure leading to seal failure.

Innovation Solution

A container design with a separate occlusion element and tightening member, where the occlusion element houses the annular sealing gaskets and the tightening member supports pressure, ensuring easy opening and secure sealing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a traditional screwed closing system with annular sealing gaskets is used, then the container can be opened and closed, but the cover tends to unscrew spontaneously due to vibrations causing liquid leaks

Engineering Contradiction:

Improvesealing reliabilityVSAvoiddifficulty to unscrew cover

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The closing system is divided into two independent functional components: a occlusion element (without threads) that provides sealing, and a tightening member (with threads) that provides mechanical retention. This segmentation allows each component to optimize its specific function without compromise.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The sealing function is extracted from the threaded tightening member and transferred to a separate occlusion element. This removes the harmful interaction between threading and sealing that causes both spontaneous unscrewing and difficult opening.

Inventive Principle:

Principle #2Taking out (Extraction)

2Reliability

If a traditional screwed closing system with annular sealing gaskets is used, then the container can be sealed, but prolonged use causes the gaskets to adhere between the cover and mouth making unscrewing extremely difficult

Engineering Contradiction:

Improvesealing effectivenessVSAvoidtime to open container

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The closing system is divided into two independent functional components: a occlusion element (without threads) that provides sealing, and a tightening member (with threads) that provides mechanical retention. This segmentation allows each component to optimize its specific function without compromise.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The sealing function is extracted from the threaded tightening member and transferred to a separate occlusion element. This removes the harmful interaction between threading and sealing that causes both spontaneous unscrewing and difficult opening.

Inventive Principle:

Principle #2Taking out (Extraction)

3Strength

If a traditional screwed closing system is used, then the container can be closed securely, but under high internal pressure the cover and mouth deform causing loosening of gasket compression and liquid outflow

Engineering Contradiction:

Improvepressure resistanceVSAvoidseal integrity under pressure

Core Design Contradiction:

StrengthVSReliability

Solution Approach 1:

Different parts of the closing system are given different mechanical properties: the occlusion element is made elastic to deform and maintain seal under pressure, while the tightening member is made rigid to resist deformation from internal pressure. This local differentiation of material properties optimizes each component's performance.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The material elasticity parameter is applied selectively to the occlusion element, allowing it to change shape under pressure while maintaining sealing contact, whereas the tightening member maintains rigid structural integrity against pressure loads.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS12502642B2Closing system for a container of a filtering device

Publication Date: 2025.12.23 FIL TECH

AI summary

A container for filtering devices includes: a tubular lateral wall, a bottom plate which closes a first axial end of said lateral wall, and a closing system configured to close—in an openable fashion—a second and opposite axial end of said lateral wall. The closing system includes: an occlusion element, which includes a cylindrical lower portion coaxially insertable into the lateral wall, and an upper portion from which one or more abutment elements configured to rest on the edge of the second axial end of the lateral wall project, one or more coaxial annular seats on the outer lateral surface of the lower portion of the occlusion element configured to receive an annular sealing gasket, and a tightening member including a ring nut configured to surround the occlusion element and to be axially constrained to the lateral wall's exterior, at the second axial end thereof.