Drinking Straw with Movable Cover to Reduce Air Intake and Bloating
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Solution Overview
Problem
Conventional drinking straws cause discomfort due to air forming inside the straw, leading to swallowing air, which results in gassy and bloated symptoms, as liquid moves back into the container, creating an empty space that fills with air.
Innovation Solution
A drinking straw design featuring movable covers and compartments that manage liquid flow, minimizing air intake by maintaining liquid within the straw and reducing the empty space, using edge pieces and covers to control the passage of liquid and air.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a conventional drinking straw is used, then the straw structure is simple and easy to manufacture, but air forms inside the straw creating discomfort and causing users to swallow air
Solution Approach 1:
The straw is divided into multiple functional zones: a liquid retention zone near the bottom that maintains liquid presence, and a drinking zone at the top. Edge pieces create partitions that segment the internal space to control liquid-air interface behavior, preventing air from reaching the user while maintaining structural feasibility
Solution Approach 2:
Edge pieces act as intermediary structures that create controlled pathways for liquid while blocking air. These edge pieces form a barrier that allows liquid to pass through via capillary action or pressure differential while preventing air bubbles from entering the drinking zone, serving as a mediator between the liquid reservoir and the user
2Stability of the object's composition
If liquid moves back into the container, then the straw returns to empty state, but this creates empty space that fills with air again
Solution Approach 1:
The straw design pre-establishes a liquid retention mechanism at the bottom section before drinking begins. The edge pieces and internal geometry are configured to automatically maintain liquid presence in the lower zone, preventing air from entering the straw in the first place rather than correcting air entry after it occurs
Solution Approach 2:
The straw's internal geometry and edge pieces create a self-regulating system where liquid naturally remains in the retention zone through capillary action, surface tension, or pressure equilibrium. The structure automatically prevents air entry without requiring user intervention or external control mechanisms
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 reduces the amount of air swallowed, enhances user comfort, and prevents liquid from spilling back into the container, maintaining a stable liquid presence within the straw.
Implementation Method 1
a combination of muscular action of the tongue and cheeks reduces air pressure in the mouth and above the liquid in the straw, whereupon atmospheric pressure forces the liquid through the straw
Data Source
AI summary
A drinking straw may include an outer layer defining an exterior of the drinking straw and an internal space of the drinking straw. The drinking straw may also include an upper end and a lower end. Each of the upper end and the lower end may define a respective opening. The drinking straw may further include a movable cover disposed within the internal space at the lower end covering the opening at the lower end.