Gravity-Closing Beverage Lid for Splash-Controlled Pouring
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Solution Overview
Problem
Existing beverage container lids suffer from drawbacks such as inadequate liquid containment during tilting and limited usability, particularly when users are engaged in other tasks or in low-light conditions.
Innovation Solution
A lid design featuring a lower lid with a perimeter skirt and an upper lid that moves relative to the lower lid under pressure from liquid flow, utilizing stop mechanisms to prevent expulsion and allow controlled liquid release, with features like annular openings and stop members to manage liquid flow and prevent splashing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the upper lid is made movable to allow liquid flow during tilting, then liquid containment is improved, but the lid structure becomes more complex
Solution Approach 1:
The upper lid is designed to be movable relative to the lower lid, transitioning between a closed position (when the container is vertical) and an open position (when the container is tilted). This dynamic configuration allows the lid to automatically adapt to liquid flow conditions, maintaining containment when needed while allowing controlled drainage when the container is tilted, thereby improving liquid containment reliability without requiring complex active control mechanisms
Solution Approach 2:
The lid system utilizes the natural force of liquid pressure and gravity to automatically move the upper lid between closed and open positions. When the container is tilted, liquid pressure pushes the upper lid open; when vertical, gravity causes it to close. This self-regulating mechanism eliminates the need for external control systems, motors, or sensors, maintaining structural simplicity while achieving reliable liquid containment
2Reliability
If stop members are added to prevent upper lid expulsion, then liquid containment is improved, but device complexity increases
Solution Approach 1:
The stop members are extracted as separate, discrete elements positioned between the upper and lower lids, rather than being integrated into the lid bodies themselves. This allows the stop members to be easily added only where needed (at the critical expulsion point) without complicating the overall lid structure. The stop members function as simple mechanical stops that prevent the upper lid from being expelled during tilting, improving containment with minimal structural modification
Solution Approach 2:
The stop members act as intermediary elements positioned between the upper lid and lower lid, serving as a mediating structure that prevents direct expulsion of the upper lid while allowing controlled movement. These intermediate stop members provide a simple mechanical solution to contain liquid pressure without requiring complex locking mechanisms or integrated structural modifications to the lid bodies
3Reliability
If the upper lid closely conforms to the inside surface, then sealing is improved, but ease of operation deteriorates
Solution Approach 1:
The lid system is segmented into an upper lid and a lower lid that can move independently relative to each other. The upper lid is sized to closely conform to the inside surface of the lower lid when in the closed position, creating an effective seal. However, the segmentation allows the upper lid to be easily moved open during tilting without compromising the seal, as the two lids can slide past each other along the defined interface. This segmentation resolves the contradiction by allowing both close conformity for sealing and ease of movement through independent lid design
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 design effectively prevents liquid splashing while allowing controlled flow, enhancing usability in various conditions and providing a secure, stackable, and advertising-capable lid solution.
Implementation Method 1
pressure exerted upon the upper lid by liquid flowing out of the container through the openings as the container is tilted
Implementation Method 2
the upper lid returns to resting on the lower lid by gravity as the container is returned to vertical
Data Source
AI summary
A lid for a beverage container comprising a lower lid having a perimeter skirt adapted to secure the lower lid to an opening of the beverage container, a lip portion radially inward from the skirt and extending upward from the skirt and defining an inside surface, an annular portion radially inward from the lip portion and defining a plurality of openings through which liquid from the container may flow; an upper planar lid resting on the lower lid by gravity and having a perimeter edge that is sized to closely conform with the inside surface, the upper lid covering the annular portion as it rests on the lower lid, and a stop mechanism cooperating with the lower lid and the upper lid to limit the range of motion of the upper lid with respect to the lower lid, wherein the stop mechanism enables the upper lid to move away for a distance from the lower lid in response to pressure exerted upon the upper lid by liquid flowing out of the container through the openings as the container is tilted, and wherein the stop mechanism prevents the upper lid from being expelled from the lower lid, and wherein the upper lid returns to resting on the lower lid by gravity as the container is returned to vertical.