Rotating Dispensing Closure for Measured Dose Control
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Solution Overview
Problem
Existing dispensing devices for flowable products lack functionality and effective dispensing options, failing to provide a simple and accurate method for delivering a measured dose from squeeze-type containers.
Innovation Solution
A two-piece dispensing closure system comprising a cup-shaped measuring chamber and a rotatable dispensing control lid, which allows for axial movement between closed, fill, and drain positions, enabling precise measurement and dispensing of a fixed or adjustable volume of product, along with optional features like a tamper-evident tab and cooperative threading for secure attachment to the container.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional metering apparatus with valve and actuating rod is used, then liquid can be metered and dispensed, but the device structure becomes complex and difficult to operate
Solution Approach 1:
The dispensing closure is divided into two main segments: a measuring chamber assembly and a dispensing control lid. The measuring chamber includes a cup-shaped body with integrated sealing, while the lid contains the dispensing mechanism. This segmentation allows each component to be optimized independently and simplifies the overall operation by separating measurement and dispensing functions into distinct, easily manipulated parts.
Solution Approach 2:
The complex valve mechanism and actuating rod from traditional metering apparatus are completely removed. Instead, the patent uses a simple cup-shaped measuring chamber that fills passively from the container, eliminating the need for mechanical valves and actuating components while achieving accurate metering through the chamber's fixed volume geometry.
2Measurement precision
If a measured dose dispensing system is implemented, then product dosage accuracy is improved, but the device structure and operation become more complex
Solution Approach 1:
The measuring chamber is designed with specific local geometric features including a precisely defined cup-shaped volume, a drain well with controlled opening, and a spout with specific dimensions. These local geometric qualities ensure accurate metering of the desired dose while maintaining overall structural simplicity. The chamber's fixed geometry provides measurement precision without requiring complex measurement mechanisms.
Solution Approach 2:
The measuring chamber automatically fills to its predetermined volume when placed in the container, and the dispensing lid automatically controls the dispensing process when rotated. The system self-regulates the metering and dispensing functions through its mechanical design, eliminating the need for external control mechanisms or complex operation procedures.
3Adaptability or versatility
If a rotatable dispensing control lid with multiple positions is used, then dispensing control and functionality are enhanced, but the device complexity increases
Solution Approach 1:
The dispensing control lid is designed to rotate dynamically between three distinct positions: closed position (sealing the dispensing orifice), open position (allowing product to flow from the spout), and drain position (draining excess product back into the container). This dynamic rotational movement provides versatile dispensing control while maintaining mechanical simplicity through a single rotating component rather than multiple separate mechanisms.
Data Source
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AI summary
A two-piece measured-dose dispensing closure (10) includes a cup-shaped measuring chamber (12) and a rotatable dispensing control lid (14). In use, the dispensing control lid is axially moved relative to the measuring chamber by rotation between a first closed position, a second intermediate dispensing position, and a third drain position.