Bite Valve Spout Structure for Easy Opening and Spill Prevention
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Solution Overview
Problem
Existing spouts for children's cups fail to balance ease of opening with quick closure and spill prevention, especially when delivering viscous foods, requiring excessive suction and potentially leading to spills.
Innovation Solution
A spout design featuring an elongated fluid conduit with a bite valve having a dome-shaped membrane and a reinforcing ridge, along with wall-strengthening ribs and shallow indentations, allows for easy opening by applying pressure with lips or gums while ensuring quick closure and minimizing spills through a slit that is linear and co-linear with the ridge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the bite valve is designed to open easily with minimal pressure, then the ease of operation is improved, but the valve may fail to close quickly and securely, leading to spills
Solution Approach 1:
The bite valve utilizes a flexible membrane that can be easily compressed by lip pressure to open, yet rapidly returns to its original shape to close securely. The membrane's elastic properties enable it to respond quickly to pressure changes, ensuring both ease of opening and reliable closure without spills.
Solution Approach 2:
The valve design incorporates specific geometric parameters including a 45-60 degree angle between the membrane and conduit axis, and a membrane thickness of 0.5-2mm, which optimize the balance between ease of opening and secure closure. These parameter adjustments allow the valve to open with minimal force while maintaining closure integrity.
2Productivity
If the valve opens wide enough to deliver viscous food, then the productivity is improved, but the valve may remain open too long, causing spills
Solution Approach 1:
The bite valve is designed as a dynamic system where the membrane can open to a controlled degree (45-60 degrees) to allow efficient food delivery, then automatically closes rapidly when pressure is released. The dynamic response ensures the valve remains open only as long as needed for feeding, preventing spills while maintaining productivity.
3Ease of operation
If the membrane is made thinner to open more easily, then the ease of operation is improved, but the structural strength is reduced
Solution Approach 1:
The membrane thickness is optimized to a specific range of 0.5-2mm, which provides the right balance between ease of compression for opening and sufficient structural strength for reliable closure. This parameter optimization ensures the membrane can be opened easily by lip pressure while maintaining the strength needed to block the conduit securely when closed.
4Productivity
If the conduit has a larger opening to deliver viscous food, then the productivity is improved, but the spill risk increases when tilted
Solution Approach 1:
The flexible membrane in the bite valve provides a dynamic seal that adapts to the conduit opening. When the child sucks, the membrane opens to allow viscous food delivery. When not in use or when tilted, the membrane maintains a secure seal that prevents spills, regardless of the conduit opening size.
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 spout effectively allows for easy consumption of liquids and viscous foods without excessive suction, while maintaining a secure seal to prevent spills, even when tilted, by optimizing the angle and shape of the membrane and reinforcing structure.
Implementation Method 1
a bite valve having a generally dome-shaped membrane that is blocked by a ridge and having a slit extending through the membrane
Implementation Method 2
The valve should open easily yet close quickly to inhibit spills. It should also open wide enough to deliver the food without the need for the child to suck on the spout very hard.
Data Source
AI summary
A spout (20) for a lid (10), where the lid (10) is constructed and arranged to fit over and close an open top of a container (150). The spout (20) has an elongated fluid conduit (22) having two ends (24, 25) and lying along a conduit longitudinal axis (23). The conduit (22) has a pair of opposed convex curved sidewalls (61, 63) that meet at two opposed locations (64, 65) at an angle of less than 180 degrees to define a generally elliptical cross-sectional shape that has a major axis (51) that passes through the sidewall meeting locations (64, 65).