Dual-Opening Container Closure for Pressure-Relief Sealing
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Solution Overview
Problem
Existing container designs fail to effectively manage pressure differentials that can lead to unintended leakage of liquids, especially when containing carbonated or heated substances, and lack flexibility in fluid flow options for different consumption modes.
Innovation Solution
A container top with dual flow pathways, including a straw and a direct opening, is designed with a closure that opens the secondary pathway first to relieve pressure before the primary pathway, and incorporates seals to prevent leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single flow pathway is provided in the container top, then the device complexity is reduced, but the adaptability for different consumption modes is limited
Solution Approach 1:
The container top is segmented into multiple flow pathways: a first flow pathway with a straw for sipping and a second flow pathway without a straw for direct drinking or pouring. This segmentation allows different consumption modes through separate dedicated channels, resolving the contradiction between versatility and complexity by providing specialized pathways for specific functions.
Solution Approach 2:
The container top is designed with multi-functionality by incorporating both a straw-based pathway and a direct opening pathway, enabling the same container to support multiple consumption modes (sipping through straw, drinking directly, or pouring). This universal design approach allows one structure to serve multiple purposes, enhancing adaptability while maintaining reasonable complexity.
2Reliability
If pressure is not managed during closure opening, then the ease of operation is improved, but unintended liquid expulsion occurs due to pressure differentials
Solution Approach 1:
The closure is designed to open the second flow pathway (without straw) before the first flow pathway (with straw) during the opening process. This preliminary action allows pressure to be equalized through the second pathway first, preventing pressure differentials that would cause liquid expulsion through the straw pathway, thereby ensuring reliable leakage prevention while maintaining ease of operation.
Solution Approach 2:
The design implements preliminary anti-action by providing a pressure relief pathway (second pathway) that opens first to counteract the pressure buildup that would otherwise cause harmful liquid expulsion through the primary straw pathway. This preemptive pressure management prevents the harmful effect before it occurs.
3Reliability
If seals are added to prevent leakage, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The seal components are merged with the closure structure itself, integrating the sealing function into the existing closure mechanism rather than adding separate independent seal components. This integration approach improves reliability for leakage prevention while minimizing the increase in device complexity by combining multiple functions into unified structures.
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
A container can include a container body, a container top, a closure, and a closure seal. The container top can be connected to the container body. The container top includes a first opening and a second opening. The closure is selectively connected to the container top to control access to the first opening and the second opening. The closure seal is positioned between the closure and the container top. The closure seal comprises a first sealing surface and a second sealing surface. The first sealing surface is sized and configured to at least partially seal the first opening when the closure is connected to the container top. The second sealing surface is sized and configured to at least partially seal the second opening when the closure is connected to the container top.