Removable Stopper with Variable Volume Chamber for Controlled Product Release

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Solution Overview

Problem

Existing devices for releasing additives in cosmetic and pharmaceutical products lack user control, result in inhomogeneous distribution, and are not adaptable to various container sizes, leading to inconsistent product quality and potential premature rupture during transport.

Innovation Solution

A removable device with a rigid chamber of variable volume, featuring a cap and insert that screw together to crush and rupture a reservoir, ensuring controlled release and adaptability to different container sizes, with a screw thread mechanism for precise volume reduction and minimal user effort.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the device uses a fixed volume chamber design, then the structure is simpler, but it cannot adapt to different container sizes and results in inconsistent product quality

Engineering Contradiction:
Improveadaptability to different container sizesVSAvoiddevice structure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The chamber is designed with a movable bottom that can change position, transforming the fixed volume chamber into a dynamic one. This allows the chamber volume to adapt to different container sizes while maintaining a relatively simple overall device structure. The movable bottom acts as the dynamic element that adjusts the chamber configuration.

Inventive Principle:
Principle #15Dynamics

2Manufacturing precision

If the device allows user-controlled rupture, then genuine mixing is achieved, but user strength variation causes inconsistent release quantity

Engineering Contradiction:
Improverepeatability of release quantityVSAvoiduser control capability
Core Design Contradiction:
Manufacturing precisionVSEase of operation

Solution Approach 1:

The device incorporates a safety member that provides feedback control on the rupture action. The safety member includes a breakable element that prevents premature rupture during transport but allows controlled rupture when proper force is applied. This feedback mechanism ensures consistent release quantity regardless of variations in user strength, while still maintaining user control over the timing of the rupture.

Inventive Principle:
Principle #23Feedback

3Reliability

If the device prevents premature rupture, then product integrity is maintained, but the structure becomes more complex with additional safety components

Engineering Contradiction:
Improveproduct integrity during storage and transportVSAvoidsafety mechanism complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The safety member acts as an intermediary element between the chamber and the rupture mechanism. It includes a breakable element that serves as a controlled weak point, allowing the device to maintain product integrity during storage and transport while enabling reliable rupture when needed. This intermediary component prevents premature rupture without requiring complex safety systems.

Inventive Principle:
Principle #24Intermediary (Mediator)

4Manufacturing precision

If the device uses progressive release of aromatic composition, then the structure is simpler, but inhomogeneous distribution occurs in the final product

Engineering Contradiction:
Improvehomogeneity of aromatic composition distributionVSAvoidmixing mechanism complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The device is designed to rupture the chamber and release the aromatic composition into the container before the final product is assembled or used. This preliminary action ensures that the aromatic composition is distributed homogeneously throughout the base product from the beginning, rather than being added progressively during dispensing. The breakable element ensures this preliminary mixing action occurs at the optimal moment.

Inventive Principle:
Principle #10Preliminary action

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 device ensures reproducible and controlled release of products, maintaining product integrity during storage and transport, and allows for effective mixing with base products, ensuring consistent organoleptic characteristics and adaptability to various container sizes.

Implementation Method 1

comprising a screw thread (30) engaging with a screw thread (51) interdependent with the neck (50)

Methodology Applied
Scientific EffectScrew thread mechanism: Screw

Implementation Method 2

causing the rupturing of the rupturable wall (2) by crushing when they are brought together

Methodology Applied
Scientific EffectMechanical compression: Compression

Data Source

PatentUS8584839B2Device for preserving and releasing a product contained in a reservoir having a rupturable wall
Publication Date: 2013.11.19 STE DE THERMOFORMAGE & DINJECTION DES PLASTICS
  • US8584839B2 patent drawing
  • US8584839B2 patent drawing
  • US8584839B2 patent drawing

AI summary

The present invention relates to a removable device for preserving and releasing a product contained in a reservoir (2) having a rupturable wall. Said device is in the form of a stopper (1) intended to be fitted on a container (5), and comprises:a cap (3) which is able to engage with the neck (50) of the container (5) and through which passes a hollow dispensing tube (12) which leads into said container (5),and an insert (4) able to be positioned on or in the neck (50) of the container.The cap (3) and the insert (4) delimit a rigid chamber (10) of variable volume, containing at least one reservoir (2) containing said product and at least one opening (11) for releasing the product in the container (5).Means enable the cap (3) and the insert (4) to be moved closer together, reducing the volume of the chamber (10) and rupturing the reservoirs (2). These means consist of a screw thread (30) present on the cap (3) and engaging with the screw thread (51) on the neck (50).