Liquid Applicator Seal and Biasing Mechanism
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Solution Overview
Problem
Existing liquid applicator devices are complex and costly to manufacture, and none fully satisfy the requirements for a complete solution in dispensing liquids efficiently and economically.
Innovation Solution
A simplified liquid applicator device design featuring a closure with a sealing member and a slidably disposed applicator, where a biasing member forms a seal to inhibit liquid flow until the applicator is depressed against a surface, allowing liquid to flow from the container to the applicator tip.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex valve mechanism is used to control liquid flow, then liquid dispensing reliability is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent extracts the complex internal valve mechanism from the closure and replaces it with a simple seal member. The liquid flow control function is achieved through the presence or absence of the applicator tip relative to the seal member, rather than through complex internal valve components. This eliminates unnecessary complexity while maintaining reliable liquid dispensing control.
Solution Approach 2:
The applicator tip itself serves the dual function of both applying liquid and controlling liquid flow. When the applicator tip is inserted, it automatically blocks the seal member and prevents liquid flow. When removed, liquid flow is automatically enabled. This self-service mechanism eliminates the need for separate complex valve components.
2Device complexity
If a simple seal mechanism is used, then device complexity is reduced, but liquid flow control reliability deteriorates
Solution Approach 1:
Instead of using a complex mechanism to enable liquid flow and a simple seal to prevent it, the patent inverts the approach: a simple seal member prevents liquid flow by default, and the presence of the applicator tip blocks the seal to enable flow. This inversion achieves reliable liquid flow control with minimal complexity.
3Reliability
If an integral valve assembly is used, then liquid flow control is improved, but ease of manufacture deteriorates
Solution Approach 1:
The patent segments the liquid applicator device into distinct, easily manufactured components: a closure with a simple seal member, and a separate applicator tip. This segmentation allows each component to be manufactured independently using simple processes, then assembled together. The separation eliminates the need for complex integral valve assemblies while maintaining effective liquid flow control.
4Reliability
If a complex liquid dispensing mechanism is used, then liquid delivery reliability is improved, but manufacturing cost increases
Solution Approach 1:
The patent employs a simple, inexpensive seal member in the closure that can be easily replaced or integrated into an affordable closure assembly. The applicator tip serves as a disposable or replaceable component. This approach achieves reliable liquid delivery control without the high manufacturing costs associated with complex mechanical valve assemblies.
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
The design provides a cost-effective, efficient, and user-friendly mechanism for dispensing liquids, allowing for easy integration with existing containers and ensuring reliable liquid delivery without the need for complex mechanisms.
Implementation Method 1
A biasing member urges the applicator to form a seal with the sealing member
Implementation Method 2
The seal inhibits liquid flow from the container to the applicator
Implementation Method 3
A depression of the applicator against the surface displaces the applicator from the seal to enable liquid to flow from the container to the applicator tip
Data Source
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AI summary
A liquid applicator device is disclosed for applying a liquid from a container to a surface. A closure defining a closure aperture is secured the closure to the container. A sealing member sealingly engages with the closure mounting. The sealing member has a tubular sleeve with an applicator slidably disposed within the tubular sleeve. The applicator comprises a hollow interior with an applicator tip defined by an outer applicator portion of the applicator. A biasing member coacts between the closure and the applicator for urging the applicator to form a seal with the sealing member. A depression of the outer applicator portion against the surface displaces the applicator from the sealing member to enable the flow of the liquid from the container to the applicator tip of the applicator.