Overcap Sealing Flap Frictional Retention Mechanism
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Solution Overview
Problem
Existing container overcaps lack a reliable mechanism for securely retaining a sealing flap in an open position, which hinders easy access to the contents while maintaining closure functionality.
Innovation Solution
The overcap design features a stand-off rim with a projection and a receiving gap that creates a frictional engagement to securely hold the sealing flap in the open position, allowing for easy access and closure of the container access opening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a removable overcap is used to protect the product and provide access, then the container can be sealed when not in use, but the overcap cannot be reliably retained in the open position without additional locking mechanisms
Solution Approach 1:
The overcap uses frictional engagement between the stand-off rim and the sealing flap to automatically retain the flap in the open position without requiring external locking mechanisms. The dimensional relationship between the gap and the stand-off rim creates self-retaining friction that holds the flap open during use and allows it to close when pressure is applied.
Solution Approach 2:
The invention changes the physical parameter of frictional engagement by creating a specific dimensional relationship between the gap in the stand-off rim and the sealing flap. This parameter change allows the flap to be retained in the open position through friction while still allowing controlled closing when needed.
2Ease of operation
If a frictional engagement mechanism is used to retain the sealing flap open, then the overcap can be easily opened without complex mechanisms, but the retention force may not be sufficient for large or heavy containers
Solution Approach 1:
The stand-off rim with its projection and receiving gap is pre-formed during manufacturing to create the frictional engagement mechanism. This preliminary structural preparation ensures that when the sealing flap is positioned in the open state, the frictional force is automatically engaged to maintain retention without requiring additional active components.
Solution Approach 2:
The stand-off rim incorporates a curved or rounded projection that engages with the sealing flap in a frictional manner. This curved geometry distributes the retention force across a larger surface area, enhancing the reliability of the retention mechanism while maintaining ease of opening through simple pressure application.
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
This design ensures the sealing flap remains securely open for easy access to the contents without the need for additional mechanisms, enhancing usability and maintaining a sealed closure when not in use.
Implementation Method 1
The dimensional relationship of the gap between the projection and the stand-off rim creates a frictionally engagement of the projecting first portion of the flap, to releasably retain the sealing flap in the open position
Data Source
AI summary
An overcap is provided and forms a closure for at least a portion of an access opening on the container. A stand-off rim is formed on the upper surface of the overcap adjacent the peripheral edge. The overcap includes a closure body. A sealing flap is pivotally attached to the closure body and movable between a first position for covering the container access opening and a second position for exposing the access opening. A projection is positioned adjacent the stand-off rim on the closure body and defines a receiving gap for receipt and frictional engagement of the stand-off rim on the sealing flap in the open position. The frictional engagement of the sealing flap releasably retaining the sealing flap in the open second position.