Tamper-Evident Container Lock With Breakaway Perforation

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Solution Overview

Problem

Existing containers with locking mechanisms do not provide evidence of being opened after re-closure, allowing potential tampering or unauthorized access.

Innovation Solution

A container design featuring a locking mechanism with a tamper evidence feature, including a perforation between the plug and hinge, which breaks upon opening, providing visual evidence of tampering.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a locking mechanism is added to secure the lid, then security against unauthorized access is improved, but the container cannot provide evidence of opening after re-closure

Engineering Contradiction:

ImprovesecurityVSAvoidtamper evidence

Core Design Contradiction:

ReliabilityVSLoss of information

Solution Approach 1:

The tamper evidence feature is segmented as a separate component (perforation in the panel) distinct from the locking mechanism. This allows the locking mechanism to provide security while the separate perforation provides tamper evidence, resolving the contradiction by dividing functions into independent elements that can coexist without interfering with each other.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The perforation acts as an intermediary element between the lid and base. When the lid is opened, the perforation breaks to provide visual evidence of tampering. This intermediary feature allows the system to maintain security through the locking mechanism while simultaneously providing evidence of opening through the perforation's breakage.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of operation

If the container is designed to be opened for access, then usability is improved, but evidence of opening is lost

Engineering Contradiction:

ImproveaccessVSAvoidopening evidence

Core Design Contradiction:

Ease of operationVSLoss of information

Solution Approach 1:

The perforation is pre-positioned in the panel at a location that will break when the lid is opened. This preliminary arrangement ensures that when normal opening operation occurs, the perforation automatically breaks to provide evidence, allowing easy access while maintaining evidence provision without requiring additional actions.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The breaking of the perforation, which could be seen as damage, is converted into a beneficial tamper evidence feature. The breakage of the perforation provides visual indication of opening, transforming what appears to be structural damage into useful information about container access history.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

3Loss of information

If a tamper evidence feature is added to the locking mechanism, then evidence of opening is provided, but device complexity increases

Engineering Contradiction:

Improvetamper evidenceVSAvoidstructure

Core Design Contradiction:

Loss of informationVSDevice complexity

Solution Approach 1:

The tamper evidence feature is merged with the existing panel structure of the locking mechanism. The perforation is incorporated into the panel that is already part of the locking assembly, combining the security function and evidence function into a single integrated structure rather than adding completely separate components.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The panel containing the perforation serves multiple functions: it is part of the locking mechanism structure, provides the tamper evidence through perforation breakage, and maintains the structural integrity of the lid-base connection. This multi-functionality reduces the need for additional separate components.

Inventive Principle:

Principle #6Universality (Multi-functionality)

4Reliability

If the locking mechanism is made secure, then prevention of tampering is improved, but the container cannot indicate if it has been opened

Engineering Contradiction:

ImprovesecurityVSAvoidopening detection

Core Design Contradiction:

ReliabilityVSDifficulty of detecting and measuring

Solution Approach 1:

The breakage of the perforation creates a visible change in the container's appearance, providing a clear visual indicator of opening. This visual detection method allows users to easily determine whether the container has been opened without complex detection systems, maintaining security while enabling simple opening detection.

Inventive Principle:

Principle #32Color changes

Data Source

PatentUS20260028151A1Tamper evident container

Publication Date: 2026.01.29 BROWN LLC

AI summary

A tamper evident container comprises a base, a lid, a first hinge, a locking mechanism, a second hinge, and a tamper evidence feature. The base retains items for storage. The lid engages with and covers the base. The first hinge rotatably couples the base and the lid. The locking mechanism secures the lid to the base and includes a plug and a receptacle. The locking mechanism is engaged when the plug is within the receptacle. The second hinge rotatably couples the base and the plug. The tamper evidence feature provides evidence of the container being tampered with or opened and is positioned between the plug and the second hinge.