Drinking Vessel Cap With Roll-Down Membrane for Tamper Protection
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Solution Overview
Problem
Open-top drinking vessels make it easy for individuals to tamper with beverages by adding incapacitating substances, as they are not securely covered.
Innovation Solution
A cap with a rigid cover disk assembly and a flexible tubular membrane that can be rolled down to securely cover the vessel, preventing unwanted matter from entering, featuring a drinking straw-compatible design and tamper-evident features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the drinking vessel is left uncovered for easy access and preparation, then the ease of operation is improved, but the security against tampering deteriorates
Solution Approach 1:
The cap is divided into two functional segments: a rigid cover disk assembly that provides the blocking function and a flexible tubular membrane that provides the securing function. This segmentation allows the cap to both cover the vessel opening for security and be easily attached/removed for access.
Solution Approach 2:
The cap is deployed in advance before the beverage is consumed, creating a preliminary protective barrier. The membrane is pre-formed and can be quickly stretched over the vessel, providing immediate security without interfering with the beverage preparation or serving process.
2Reliability
If a rigid cover is used to prevent tampering, then the security against tampering is improved, but the ease of operation deteriorates due to difficulty in placement and removal
Solution Approach 1:
The tubular membrane is made of flexible material that can be easily stretched and molded around the vessel opening. This flexibility allows the membrane to conform to different vessel shapes and sizes, making placement simple and quick while maintaining a secure fit that prevents tampering.
Solution Approach 2:
The membrane transitions from a compressed, portable state to an expanded, protective state during deployment. This dynamic transformation allows the cap to be easily stored and handled, then quickly deployed to provide secure coverage when needed.
3Reliability
If the cap is designed to fully cover the vessel opening for security, then the security against tampering is improved, but the accessibility for drinking deteriorates
Solution Approach 1:
The drinking function is extracted from the main vessel opening by providing a separate access path through the straw. The straw creates a dedicated channel that bypasses the covered opening, allowing the cap to fully seal the vessel top while maintaining drinking accessibility through the extracted straw pathway.
Solution Approach 2:
The straw acts as an intermediary element that connects the drinker to the beverage through the capped opening. It provides a controlled access route that maintains the security of the covered opening while enabling convenient drinking without requiring removal of the cap.
Data Source
AI summary
The present invention provides a cap for covering the open top of a drinking vessel. The cap includes a substantially rigid cover disk assembly dimensioned to span across and substantially cover the open top of the drinking vessel, and a flexible tubular membrane that extends from a bottom side of the cover disk assembly. The membrane is adapted to be rolled down a side wall of the drinking vessel to thereby removably secure the cap thereto. Identifying indicia can be printed on the top side of the cover disk assembly. The beverage within the drinking vessel can be consumed using a drinking straw. When properly deployed, the cap inhibits the introduction of unwanted matter into the drinking vessel.