Rotating Dispensing Cap with Tamper Tab
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Solution Overview
Problem
Conventional aerosol containers face issues with product build-up around the aperture, leading to clogging and sanitation concerns, and lack a mechanism to prevent actuator access in the closed position or indicate tampering.
Innovation Solution
A cap design featuring a rotatable collar and shroud with a frangible tab that indicates first-use and tampering, and a mechanism to prevent actuator access in the closed position, minimizing build-up and ensuring safe dispensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional cap design is used, then the structure is simple, but product build-up occurs around the aperture leading to clogging and sanitation concerns
Solution Approach 1:
The cap is divided into distinct functional segments: a shroud portion with an aperture, a rotatable collar, and a frangible tab. This segmentation allows each component to perform its specific function - the shroud contains the aperture while the collar and tab prevent build-up and control access, thereby improving sanitation without requiring complete redesign of the entire cap structure.
Solution Approach 2:
The collar acts as an intermediary component between the shroud and the actuator. It rotates to control access to the actuator in the closed position while allowing access in the open position, and the frangible tab serves as an intermediary indicator mechanism that signals first-use status. These intermediary elements address sanitation and control issues without directly modifying the core aperture structure.
2Reliability
If access to the actuator is allowed in both open and closed positions, then ease of operation is improved, but unintended dispensing and tampering can occur
Solution Approach 1:
The collar is designed to be rotatable between a closed position that restricts access to the actuator and an open position that allows access. This dynamic positioning enables the cap to adapt its accessibility based on the intended use state, preventing unintended dispensing when closed while maintaining ease of operation when intentionally opened by the user.
Solution Approach 2:
The frangible tab provides self-service indication of the cap's state. When the cap is new, the tab indicates first-use status. After use, the tab can be broken or removed, providing visual feedback to the user about the cap's condition and dispensing history without requiring additional complex mechanisms or user intervention.
3Reliability
If no tamper indicator is provided, then the device complexity is reduced, but user awareness of tampering is not provided
Solution Approach 1:
The frangible tab utilizes visual changes in its physical state (intact vs. broken) to indicate tampering status. This visual indicator provides clear, immediate feedback to the user about whether the cap has been tampered with or is in its original state, enhancing reliability and user awareness without requiring complex electronic or mechanical indication systems.
Data Source
AI summary
A cap for a container that stores and dispenses fluids or gels that includes a shroud having a shroud wall surrounding an opening and a collar connected on the shroud so that the collar selectively rotates relative to the shroud, is provided. The collar is rotatable between a closed position and an open position. The actuator is connected to the shroud, and has a contact portion. The contact portion is in the opening of the shroud. The actuator is movable in the closed position and the open position by a force that is applied to the contact portion only after removal of a tab.