Tamperproof Ring Axial Shift for First-Open Recognition
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Solution Overview
Problem
Existing container designs with guarantee rings often make it difficult for users to recognize the initial opening and require additional parts or complex mechanisms, such as tear-off tabs, which can confuse users and complicate the opening process.
Innovation Solution
A container design featuring a container body, closure cap, and guarantee ring with outwardly projecting locking projections and inwardly projecting locking projections that interact to facilitate easy recognition of the first opening, eliminating the need for a tear-off strip by using an annular snap-in mechanism with grooves and latching projections to securely hold the guarantee ring away from the closure cap after initial use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a guarantee ring connected via predetermined breaking webs is used, then tamper evidence is provided, but the initial opening is not clearly recognizable to the user
Solution Approach 1:
The patent applies a color change principle through the visual separation mechanism. When the container is opened for the first time, the guarantee ring is pushed axially relative to the closure cap, creating a visible gap or separation that is easily recognizable. This positional change serves as a clear visual indicator ( analogous to color change in other tamper-evident systems) that distinguishes the initial opening state from subsequent openings, thereby resolving the contradiction between providing tamper evidence and ensuring clear recognition of initial opening.
2Ease of operation
If a tear-off tab or tear-off strip is added to the guarantee ring, then the guarantee ring can be removed, but the functionality is incomprehensible to users and an additional part is required that must be disposed of
Solution Approach 1:
The patent merges the guarantee ring functionality directly with the closure cap structure. The guarantee ring is integrated into the closure cap assembly and is pushed axially relative to the cap during opening, eliminating the need for separate tear-off tabs or strips. This integration reduces the number of additional parts while maintaining the tamper-evident function, as the guarantee ring itself becomes both the sealing element and the tamper indicator through its relative movement and visible separation from the cap.
Solution Approach 2:
The guarantee ring is designed to be pushed axially by the user's own opening action of the closure cap. When the user unscrews or opens the cap, the guarantee ring is automatically pushed relative to the cap structure, creating the visible separation indicator without requiring any additional manual manipulation of separate tabs or strips. This self-service mechanism simplifies user interaction while maintaining tamper evidence functionality.
3Reliability
If locking projections are used to block the guarantee ring, then the guarantee ring is secured, but excessive force is required to open the container
Solution Approach 1:
The patent employs a dynamic locking mechanism where locking projections on the guarantee ring interact with corresponding features on the closure cap. During normal closing, the projections engage to secure the guarantee ring in place. During opening, the guarantee ring is pushed axially, causing the locking projections to disengage dynamically from their locking positions. This dynamic behavior allows the system to provide strong security during closure while requiring only normal opening force, as the locking mechanism automatically transitions from engaged to disengaged state during the opening motion.
Data Source
Figure 1
Figure 2a~2b
Figure 3
AI summary
The invention relates to a container (1) comprising a container body (4), a closure cap (3), which can be screwed onto said body, and a tamperproof ring (2), which is connected to said cap by way of breakaway webs (10). The closure cap (3) has first driver elements (18), which extend in the axial direction and, when the container (1) is opened for the first time, act on second ramp-like driver elements (19) of the tamperproof ring (2) that extend in the axial direction, and thereby push the tamperproof ring (2) away from the closure cap (3). On a shoulder (6) of the container body (4) that surrounds the container opening, two grooves (22.1, 22.2), one arranged above the other, are provided for receiving an engaging element (23) of the tamperproof ring. The engaging means is engaged in the first, upper groove (22.1) before the container (1) is opened for the first time and, as a result of the interaction of the driver elements (18, 19) on both sides, is engaged in the second, lower groove (22.2) after the container (1) is opened for the first time.