Water Bottle Cap With Tethered Small Spout
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Solution Overview
Problem
Existing reusable water bottles face challenges in balancing ease of drinking and filling, as narrow-mouth bottles are difficult to fill and clean, while wide-mouth bottles are hard to drink from without spilling.
Innovation Solution
A water bottle cap system comprising a large cap with a spout, a small cap that screws onto the spout, and a flexible strap with tethering features, allowing the small cap to be securely attached to the strap for easy drinking and pouring, while the large cap can be removed for easy filling and cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a narrow-mouth cap is used, then drinking convenience is improved, but filling and cleaning difficulty increases
Solution Approach 1:
The cap is divided into two separate portions: a large cap portion that fits on the wide mouth of the bottle for easy filling and cleaning, and a small cap portion that attaches to the spout for convenient drinking. This segmentation allows each portion to serve its specific function optimally without compromising the other.
2Ease of manufacture
If a wide-mouth cap is used, then filling and cleaning ease is improved, but drinking convenience deteriorates
Solution Approach 1:
The cap system separates the wide-mouth large cap portion (for easy filling and cleaning) from the small spout cap portion (for convenient drinking). The flexible strap connects these two portions, allowing them to work together as an integrated system that resolves the contradiction between wide-mouth accessibility and spout drinking convenience.
3Ease of operation
If a separate small cap is added to the large cap, then drinking convenience is improved, but device complexity increases
Solution Approach 1:
The small cap portion and large cap portion are merged into a single integrated cap system through the flexible strap connection. This allows the two portions to be used separately or together, providing drinking convenience through the small spout cap while maintaining the simplicity of the large cap for filling and cleaning, without significantly increasing overall device complexity.
Data Source
AI summary
A water bottle cap system combination that can be used with wide mouth water bottles or mason jars. The water bottle cap system includes a large cap portion and a small cap portion, which are coupled by a flexible strap. The small cap portion can be screwed onto the spout of the large cap portion, which is screwed onto the water bottle or mason jar. The small cap portion can be unscrewed from the spout and temporarily attached to the strap so that the small cap portion is out of the way of the spout, but still attached to the water bottle cap system, during drinking or pouring from the water bottle.


