Internally Fed Bristle Applicator for Uniform Fluid Dispensing
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Solution Overview
Problem
Existing internally fed applicators for dispensing fluids in dentistry and other applications lack the precision and uniformity needed for fine, aerial dispensing of substances like bleaching agents and adhesives, often requiring additional steps for homogeneous application.
Innovation Solution
An internally fed applicator with a closure piece and a hollow lip section featuring fine bristles (diameter ≤0.8 mm) that surround the outlet, ensuring precise and uniform fluid delivery, designed for non-cosmetic applications such as dental treatments and industrial bonding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional nozzles or wide slot applicators are used, then the structure is simple and easy to manufacture, but the dispensing precision and uniformity are insufficient
Solution Approach 1:
The patent applies a porous plug made of porous material at the outlet of the applicator. This porous structure enables precise and uniform areal dispensing of the fluid through its porous characteristics, resolving the contradiction between dispensing precision and structural simplicity.
Solution Approach 2:
The patent introduces a bristle stock with fine bristles (diameter at most 0.8 mm) at the outlet region, while the rest of the applicator maintains a simpler structure. This localized enhancement of quality at the critical dispensing point achieves precise application without making the entire device complex.
2Productivity
If conventional nozzles are used, then the device is simple, but the fluid dispensing is coarse and requires additional working steps
Solution Approach 1:
The porous plug at the outlet breaks up the fluid stream into finer droplets as it exits, enabling homogeneous aerial dispensing in a single step. This eliminates the need for additional working steps while maintaining fluid uniformity.
Solution Approach 2:
The patent transitions from a simple outlet opening to a three-dimensional porous structure with numerous interconnected pores. This dimensional change enables the fluid to be dispersed in multiple directions simultaneously, achieving areal dispensing with fine uniformity.
3Manufacturing precision
If the outlet is made finer for precise application, then dispensing precision improves, but the structure becomes more complex and harder to manufacture
Solution Approach 1:
The porous plug can be manufactured as a single integrated component using conventional porous material fabrication techniques. This approach achieves fine precise application without requiring complex assembly steps, maintaining ease of manufacture.
Solution Approach 2:
The bristle stock and porous plug are combined into a single integrated outlet structure that can be manufactured in one piece. This merging of components simplifies the manufacturing process while achieving the desired fine dispensing precision.
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
Enables comfortable, fast, and clean areal dispensing of fluids with enhanced precision and reduced waste, improving application efficiency and user experience by preventing fluid drops and ensuring consistent delivery.
Implementation Method 1
an internally hollow lip section connected to the closure piece in a fluid conducting manner, which lip section has, at at least one of its borders which bounds as its free outlet, a bristle stock made of bristles injection molded at the lip section each having a diameter of at most 0.8 mm to which bristle stock the supplied fluid is delivered via the lip section
Data Source
AI summary
An internally fed applicator for applying a fluid is provided having a closure piece for a preferable locking fixing of the applicator of a dispensing apparatus and having an internally hollow lip section connected to the closure piece in a fluid conducting manner, which lip section has, at least one of its borders which bound its free outlet, a bristle stock made of bristles injection molded at the lip section each having a diameter of ≦0.8 mm to which bristle stock the supplied fluid is delivered via the lip section.