Disposable Beverage Lid with Self-Sealing Tab
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Solution Overview
Problem
Conventional disposable beverage lids fail to balance spillage prevention and drinking flow effectively, often resulting in inadequate spillage protection when the cup is tipped or dropped, due to insufficient sealing and attachment mechanisms.
Innovation Solution
A self-sealing lid design featuring a tab portion that can be depressed to open and biased to close, providing a secure drinking passage with a channel and slit configuration for improved spill prevention, and an angled rim for enhanced attachment to the cup, ensuring minimal spillage even when the container is tipped.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the drinking hole is made smaller, then spillage prevention is improved, but drinking flow is reduced
Solution Approach 1:
The lid incorporates a movable tab member that can shift between a first position (opening the drinking passage) and a second position (closing the passage). This dynamic element allows the system to adapt between two states: fully open for drinking flow and fully closed for spill prevention, eliminating the need to compromise between the two conflicting requirements through a fixed intermediate size.
2Productivity
If the drinking hole is made larger, then drinking flow is improved, but spillage prevention is reduced
Solution Approach 1:
The movable tab member enables the opening to be large when needed (tab in first position) for adequate drinking flow, and completely closed when needed (tab in second position) for spill prevention. The dynamic switching capability allows the system to achieve both large opening benefits and complete sealing benefits without compromise.
3Device complexity
If the lid attachment mechanism uses a simple circumferential rim, then device complexity is reduced, but attachment reliability is insufficient
Solution Approach 1:
The lid incorporates a flexible seal member (such as an O-ring or gasket) that can deform to conform to the cup rim surface. This flexible element provides reliable sealing and attachment even with simple cup designs, preventing the lid from becoming dislodged during normal use while maintaining relatively simple overall construction.
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
The self-sealing tab member and improved attachment mechanism significantly reduce spillage and leakage, maintaining a comfortable drinking flow while preventing accidental spills and leaks when the container is tipped or dropped.
Implementation Method 1
The tab portion is biased so as to return to a closed position to seal the opening upon removal of pressure against the tab portion
Data Source
AI summary
The present invention is directed to a lid for use on a drinking container. The lid is capable of being releasably sealably engaged with a top end of the container. The lid can be secured to the container in a manner to resist displacement of the lid if the container is dropped or tipped. The lid includes a tab portion, which is capable of being depressed by a user's mouth, tongue or lip so as to provide an opening in the lid. The tab portion is also biased so as to return to a closed position to close the opening upon removal of pressure against the tab portion. The tab portion can have a perimeter larger in at least one dimension than the opening to resist fluid discharge when in the closed position.