Square Container Bail and Tab Mechanism for Easy Lid Removal
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Solution Overview
Problem
Square containers are inefficient to open due to their design, which requires pulling from a corner to remove the lid, making it difficult, especially when the containers are cold and slippery, leading to a need for an easy-open solution that facilitates gripping and removal.
Innovation Solution
A container design featuring a bail pivotally attached to opposite corners with a tab on the lid, allowing users to pull downward on the bail and upward on the tab to lift the lid, providing easy gripping and opening, while the bail can be positioned for carrying and the lid is designed for secure stacking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a square-shaped container is used to maximize storage space efficiency, then storage space utilization is improved, but the lid becomes difficult to remove
Solution Approach 1:
The lid is segmented by adding a tab portion that separates the lifting function from the container body. This allows the user to grip and lift the lid from a specific corner location rather than trying to grip the entire lid surface, solving the problem of difficult lid removal while maintaining the square container shape for efficient storage.
Solution Approach 2:
The bail acts as an intermediary tool between the user's hand and the lid. By attaching the bail to the container corners and connecting it to the lid tab, the system provides a mechanical lever that amplifies the user's lifting force, making it easier to remove the lid from the cold, slippery container.
2Reliability
If the container is made cold for storing cold food products, then product freshness is improved, but the container becomes slippery and difficult to grip
Solution Approach 1:
The bail serves as a thermal and tactile intermediary, allowing the user to grip the bail handles (which are warmer and less slippery) rather than directly gripping the cold, wet container body. This maintains the cold temperature needed for product freshness while eliminating the gripping difficulty.
Solution Approach 2:
The system replaces direct manual gripping of the cold container with a mechanical lifting system (bail and tab mechanism). The bail provides ergonomic handles that are easier to grip, and the lever mechanism provides mechanical advantage to lift the lid without requiring direct hand contact with the slippery container surface.
3Ease of operation
If a bail is added to facilitate easy opening and carrying, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The bail is designed to serve multiple functions: it acts as a lifting mechanism for easy lid opening, provides carrying handles for portability, and structurally connects the lid to the container. By consolidating these functions into a single component, the added complexity is justified by the multiple benefits provided.
Solution Approach 2:
The bail and tab are combined into an integrated lifting mechanism where the bail attaches to the container corners and the tab attaches to the lid, creating a unified system that provides both lifting assistance and carrying capability. This merging reduces the number of separate components needed compared to having separate lifting and carrying features.
Data Source
AI summary
The present invention is a square-shaped product container having a bail pivotally attached to an upper portion of opposite corners of the container. A mating lid for the container is formed which mates with a top portion of the container and has a tab which extends outward and downward from a sealing lip on the lid. The tab on the lid and the bail on the container work in conjunction when a user pulls downward on the bail and upward on the tab to easily pull the tab corner of the lid upward away from the container. Then, the remaining portion of the lid sealed to the container easily follows with forces upward on the lid and downward on the bail.