Indexed Metering Drum Closure for Precise Dry Product Dosing
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Solution Overview
Problem
Existing dispensing systems for dry products lack precision in metering and dispensing, often resulting in inconsistent or uncontrolled release of dry materials from containers.
Innovation Solution
A dispensing closure system featuring a rotatable metering drum with complementary indexing formations, allowing for precise alignment and operation between dispensing and filling positions, enabling controlled dispensing of single or multiple metered amounts of dry products through a metering chamber and direct dispense option.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a rotatable metering drum with indexing formations is used, then dispensing precision and control are improved, but device complexity increases
Solution Approach 1:
The dispensing system is segmented into distinct functional components: a metering drum with multiple chambers for different metered amounts, indexing formations (ridges and tabs) for precise positioning, and a rotatable mechanism. This segmentation allows each component to perform its specific function independently, achieving precise metering control while maintaining manufacturability through modular design
Solution Approach 2:
The metering drum is designed to be rotatable relative to the dispensing cap, transitioning between a dispensing position and a filling position. This dynamic capability allows the system to switch between different operational modes (dispensing vs. refilling) and enables selection of different metered amounts by rotating to different chamber alignments, thereby improving dispensing precision and flexibility
2Adaptability or versatility
If multiple metering chambers are included for different metered amounts, then versatility and dispensing options are improved, but device complexity increases
Solution Approach 1:
The metering drum is designed as a multi-functional component that can dispense multiple different metered amounts (first metered amount, second metered amount, etc.) through a single rotating mechanism. Each chamber on the drum serves a specific dispensing function, allowing the system to adapt to different dispensing requirements without requiring separate devices, thereby improving versatility while keeping the overall structure integrated and manageable
Data Source
AI summary
A closure for dispensing a metered amount of dry product from a container includes a dispensing cap and a metering drum rotatably mounted on the dispensing cap. The dispensing cap has an upper deck with a dispensing aperture and a skirt engaging the neck of the container. The metering drum has an upper deck, a lower deck, and a metering chamber therebetween. The metering chamber has an entrance aperture in the lower deck and an exit aperture in the upper deck. The metering drum is rotatable relative to the dispensing cap between a filling position, where the metering chamber is aligned with the dispensing aperture and dry product fills the chamber, and a dispensing position where the metering chamber is not aligned with the dispensing aperture and dry product can be dispensed. The dispensing cap and the metering drum include formations to index a position of the metering drum.