Direct-Fluid-Supply Pen With Density-Graded Ink Occluding Element
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Solution Overview
Problem
Conventional direct-fluid-supply writing implements face issues with ink leakage, slow initial ink supply, and complex structures, leading to poor writing performance and high costs.
Innovation Solution
A direct-fluid-supply writing implement featuring a pentip with an ink occluding element having high and low density portions, connected by communicating tubes that allow for efficient ink and air exchange, preventing ink leakage and enabling quick readiness for writing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a vent tube is provided to communicate with ambient air in the inkwell, then air supply is improved, but ink leakage occurs
Solution Approach 1:
The patent introduces an intermediary substance (absorbent material or liquid barrier) between the vent tube opening and the inkwell interior. This intermediary blocks ink from reaching the vent tube while allowing air to pass through, thus preventing ink leakage while maintaining air supply functionality.
Solution Approach 2:
The patent applies different properties to different regions: the vent tube area is designed to be air-permeable while the surrounding inkwell structure maintains ink containment. This local differentiation allows air exchange at the vent location without compromising overall ink sealing.
2Reliability
If the pentip is made longer to improve ink supply, then writing performance is improved, but device complexity and cost increase
Solution Approach 1:
The patent divides the ink supply system into functional segments: the pentip for writing, the absorbent material for ink storage and distribution, and the vent tube for air supply. This segmentation allows each component to be optimized independently, reducing overall complexity while maintaining performance.
Solution Approach 2:
The absorbent material serves multiple functions simultaneously: it stores ink, distributes ink to the pentip, and acts as a barrier to prevent ink from reaching the vent tube. This multi-functionality reduces the need for additional separate components, simplifying the overall structure.
3Quantity of substance
If multiple absorbing members are used to improve ink supply, then ink availability is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple absorbing members into a single integrated absorbing structure that can simultaneously contact both the inkwell and the pentip. This merging maintains the ink supply benefits of multiple absorbing elements while reducing the number of separate components and assembly steps.
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 solution prevents ink leakage, facilitates rapid initial ink supply, simplifies the structure, and reduces costs by ensuring reliable writing performance without excessive ink supply.
Implementation Method 1
an ink occluding element connected to a rear end of the pentip, the ink occluding element including a high-density portion
Implementation Method 2
a low density portion continuously connected to a rear of the high density portion
Implementation Method 3
pluralities of communicating tubes connecting the ink tank with the ink occluding element
Data Source
AI summary
A direct-fluid-supply writing implement has a pentip,an ink occluding element connected to a rear end of the pentip, the ink occluding element including a high-density portion, and a low density portion continuously connected to a rear of the high density portion, an ink tank disposed at rear of the ink occluding element and adapted to directly store ink and pluralities of communicating tubes connecting the ink tank with the ink occluding element, the respective communicating tubes including an opened front end, wherein the front end of the communicating tube and the rear end of the pentip connect with the high-density portion.