Dosing Device with Rotating Wheel for Cream Precision
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Solution Overview
Problem
Existing tube closures for pharmaceutical and cosmetic products do not allow for precise dosing of cream-type and gel-type mediums, relying on user judgment which can lead to unintentional underdosing or overdosing due to variability in human perception of strand length.
Innovation Solution
A dosing device with a rotatable dosing wheel and ball piston system that attaches to the tube, allowing for precise control of strand length and volume, featuring a check valve and protective cap for improved functionality and safety, enabling consistent dosing across different products and tube materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional tube closures are used, then the tube can be easily opened and handled, but precise dosing of the cream or gel cannot be achieved
Solution Approach 1:
The closure device is segmented into distinct functional components: a dosing wheel with dosing chamber, a ball piston mechanism, and a check valve system. Each component performs a specific function - the dosing wheel controls volume, the ball piston transfers the product, and the check valve prevents backflow. This segmentation allows precise dosing while maintaining manageable complexity through modular design.
Solution Approach 2:
The ball piston acts as an intermediary element between the dosing chamber and the tube outlet. It receives the cream or gel from the dosing chamber and transfers it to the outlet, enabling controlled dispensing. This intermediary mechanism allows precise dosing without requiring the user to directly control the squeezing pressure on the tube.
2Reliability
If user judgment is relied upon for dosing, then the handling remains simple, but underdosing or overdosing occurs due to visual deception
Solution Approach 1:
The dosing device performs the dosing function automatically through its mechanical mechanism. When the user squeezes the tube, the product is forced into the dosing chamber, the ball piston moves, and the dosed amount is dispensed through the exit opening. The system self-regulates the dosing process without requiring the user to judge or measure the amount, eliminating visual deception while maintaining simple operation.
Solution Approach 2:
The dosing wheel can be manufactured with different diameters or the dosing chamber can be configured with different volumetric capacities to provide various predetermined dosing amounts. This allows the same simple operating mechanism to deliver different precise doses (e.g., 2 cm, 4 cm, pea-size, walnut-size) by changing the physical parameters of the dosing components rather than changing the operation method.
3Measurement precision
If a dosing mechanism is added to the tube, then precise dosing is achieved, but the device complexity increases
Solution Approach 1:
The closure device serves multiple functions: it acts as a cap to seal the tube, a dosing mechanism to control the amount dispensed, and a dispensing system with controlled exit opening. By integrating these functions into a single device, the patent reduces overall system complexity compared to having separate components for each function while achieving precise strand length control.
Solution Approach 2:
The dosing mechanism is merged with the tube closure system. The dosing wheel, dosing chamber, and exit opening are integrated into the closure assembly that attaches to the tube. This merging eliminates the need for separate dosing equipment and simplifies the overall system while providing precise dosing control through the coordinated operation of the integrated components.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Ensures accurate and consistent dosing of cream-type and gel-type products, preventing underdosing or overdosing, and accommodating various product types and tube materials through adaptable dosing wheel diameters and volumes, enhancing user safety and handling.
Implementation Method 1
The tube is now manipulated, further product is pressed into the dosing chamber and pushes the ball piston farther in the direction of the exit opening, thereby pushing the product which has initially been introduced out of the exit opening
Implementation Method 2
the strand dosing unit has a check valve which prevents that by way of a relaxation of tubes made of plastic and of flexible tubes, re-entry of the product into the tube is to be prevented
Data Source
AI summary
A device for dosing from a tube (2) for creams or gel-like products, wherein a dosing wheel (1) is provided.