Child Resistant Metal Container With Rotating Cap Assembly
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Solution Overview
Problem
Current child-resistant packaging, particularly in metal containers, lacks recyclability, fails to preserve contents effectively, and often cannot be resealed, posing issues for products like medications and combustibles that require protection from UV light and chemical leaching.
Innovation Solution
A child-resistant metal container design featuring a cap assembly with an inner and outer cap, a central longitudinal axis, and a plate between them, allowing for multiple openings and closings while maintaining a secure seal, utilizing preservation techniques, and being fully recyclable, with features like grooves and tongues for secure engagement and audible indicators for closure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If plastic pill bottles are used for child-resistant packaging, then they can be resealed, but they cannot utilize modern preservation techniques to extend shelf life and may leach chemicals into contents
Solution Approach 1:
The patent changes the material parameter from plastic to metal (specifically aluminum or steel), which eliminates chemical leaching concerns while enabling superior preservation capabilities through hermetic sealing and compatibility with modern preservation techniques like nitrogen flushing and vacuum sealing
Solution Approach 2:
The patent employs composite construction with metal container body and cap assembly, potentially combined with polymer liners or coatings to achieve both the chemical inertness of metal and the sealing properties needed for preservation, creating a material system that prevents both leaching and degradation
2Object-affected harmful factors
If metal containers are used for products requiring UV protection, then UV light degradation is prevented, but recyclability and cost-effectiveness become concerns
Solution Approach 1:
The patent specifies using standard metal alloys (aluminum or steel) that are already accepted by recycling processors, changing the material parameter to ensure both UV protection and recyclability simultaneously rather than treating them as conflicting requirements
Solution Approach 2:
The patent design accepts that the container may be disposed of after use (particularly for single-use medications) and ensures it is made from inexpensive, easily recyclable metal materials, making the disposable model environmentally acceptable
3Reliability
If child-resistant mechanisms are added to metal containers, then child safety is improved, but the container complexity and manufacturing cost increase
Solution Approach 1:
The patent divides the cap assembly into multiple components (outer cap, inner cap, liner, seal) with distinct functions, allowing the child-resistant mechanism to be implemented through simple geometric features rather than complex mechanical systems
Solution Approach 2:
The patent employs asymmetric threading directions for the inner and outer caps (one clockwise, one counterclockwise), creating a child-resistant mechanism that relies on simple rotational asymmetry rather than complex locking mechanisms, thereby maintaining manufacturing simplicity
4Loss of information
If laser etched tracking information is placed on plastic containers, then tracking capability is achieved, but the information can be scratched off or distorted
Solution Approach 1:
The patent changes the substrate parameter from plastic to metal, which provides a harder, more durable surface that resists scratching and distortion, thereby protecting the laser-etched tracking information while maintaining the ability to etch the information onto the container
Data Source
AI summary
A child resistant container can include a container body, a closed base, an open top, an exterior and a cap assembly configured to couple to the container body for closing the container. A cap assembly can include an inner cap configured to couple to a container body and an outer cap coupled to the inner cap. A first coupler can be coupled to the inner cap and a second coupler can be coupled to the outer cap and configured to optionally engage the first coupler. An outer cap can be configured to rotate relative to an inner cap when the outer cap is in one or more positions and to engage the inner cap when the outer cap is in one or more other positions. A child resistant container can be made from recyclable metal.