Drinking Cup Closure Assembly for Spill-Proof Natural Sipping
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Solution Overview
Problem
Conventional non-spill cups do not mimic the drinking technique of ordinary cups, making it difficult for children to transition from non-spill cups to conventional cups, and often require manual operation of lids or suction, which can lead to spillage if not properly managed.
Innovation Solution
A closure assembly for a drinking cup featuring an annular body with a deformable diaphragm and a biasing member that allows liquid to flow through apertures when pressure is applied by the user's lips, mimicking the action of drinking from an ordinary cup while maintaining spill-proof functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a closure assembly with a valve that requires suction to open is used, then spill-proof functionality is achieved, but the drinking technique does not mimic ordinary cups making transition difficult for children
Solution Approach 1:
Instead of requiring suction to open the valve (conventional approach), this invention inverts the mechanism by allowing gravity-driven flow when the cup is tilted, and using the weight of the liquid itself to close the valve when upright. This inversion enables children to drink naturally as with ordinary cups while maintaining spill-proof functionality.
Solution Approach 2:
The closure assembly uses the liquid's own weight and the cup's orientation to automatically control the valve state. When the cup is upright, gravity pulls the valve closed; when tilted for drinking, gravity opens it. This self-regulating mechanism requires no suction or manual operation, making it intuitive for children.
2Reliability
If a manual lid operation mechanism is used, then spill-proof functionality is achieved, but children may lack the strength or ability to manipulate the lid
Solution Approach 1:
The closure assembly uses the liquid's own weight and the cup's orientation to automatically control the valve state. When the cup is upright, gravity pulls the valve closed; when tilted for drinking, gravity opens it. This self-regulating mechanism requires no suction or manual operation, making it intuitive for children.
Solution Approach 2:
The invention replaces complex manual lid manipulation mechanisms with a simple gravity-based valve system. Instead of requiring children to manually open/close lids, the valve responds automatically to the cup's orientation and liquid pressure, substituting mechanical complexity with natural physical forces.
3Reliability
If a valve requiring pressure differential to open is used, then spill-proof functionality is achieved, but additional action beyond normal drinking is required
Solution Approach 1:
Instead of requiring suction to open the valve (conventional approach), this invention inverts the mechanism by allowing gravity-driven flow when the cup is tilted, and using the weight of the liquid itself to close the valve when upright. This inversion enables children to drink naturally as with ordinary cups while maintaining spill-proof functionality.
Solution Approach 2:
The closure assembly uses the liquid's own weight and the cup's orientation to automatically control the valve state. When the cup is upright, gravity pulls the valve closed; when tilted for drinking, gravity opens it. This self-regulating mechanism requires no suction or manual operation, making it intuitive for children.
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
Enables children to learn how to drink from a conventional cup by allowing fluid to flow under gravity without suction, while preventing spills when not in use, through a simple and intuitive mechanism that requires no additional action beyond placing the rim to their mouth.
Implementation Method 1
the sealing element is biased into a rest position in which it is urged against said inner side of the closure member
Implementation Method 2
when pressure sufficient to overcome said bias is applied to the lip contacting portion by a user
Implementation Method 3
the user places the rim of the cup to their mouth and tips or inverts it so that fluid flows out of the cup and into their mouth under gravity
Data Source
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AI summary
A closure assembly for a drinking cup is disclosed. It comprises an annular body (5) mountable to an open upper end of a cup (3) and having a rim (8) to enable a user to drink liquid from said cup through the annular body (5). A closure member (9) is disposed within said body (5) and is positionable so as to extend across the open upper end of the cup (3) to which the body (5) is mounted. The closure member (9) has a plurality of apertures (12) in it. A sealing element (14) is located on an inner side of the closure member (9) and an actuator (15) on the opposite side of the closure member (9) which is accessible to a user when said closure assembly (2) is mounted to a cup (3). The sealing element (14) and actuator (15) are coupled to each other with the sealing element (14) biased into a rest position in which it is urged against said inner side of the closure member (9) to block said apertures (12) and prevent the flow of liquid therethrough. The arrangement is such that the sealing element (14) is moved out of said rest position to allow liquid to flow through said apertures (12) and out of the vessel when pressure sufficient to overcome said bias is applied to the actuator (15) by a user.