Bolt Action Pen with Adjustable Inner Barrel and Collet
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Solution Overview
Problem
Most pen bodies, including bolt action pens, require specific ink cartridge refills, making it difficult to find a compatible replacement and often necessitating testing for proper fit and function.
Innovation Solution
A bolt action pen design featuring a pen body with adjustable inner and outer barrels, a collet for compressive adjustment, and O-rings for rotational friction, allowing universal reception of ink cartridges regardless of dimensions, enabling easy adaptation to various refill cartridges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a specific ink cartridge type is required for the pen body, then the pen structure is simple and reliable, but the adaptability to different cartridge dimensions is poor
Solution Approach 1:
The patent implements adjustable barrels (inner and outer) that can be moved along the pen body to accommodate different cartridge lengths. The inner barrel can be positioned at different locations to match various cartridge dimensions, transforming a static structure into a dynamic, adaptable system.
Solution Approach 2:
The pen body is designed with universal adaptability through adjustable barrels and a movable tip assembly that can accommodate multiple cartridge types. The system functions with both short and long cartridges by adjusting the barrel positions and tip location, making the pen body universal rather than specific to one cartridge type.
2Adaptability or versatility
If the pen body is adjusted to accommodate different cartridge dimensions, then the adaptability improves, but the device complexity increases due to additional adjustment mechanisms
Solution Approach 1:
The patent uses a nested structure where the inner barrel is positioned within the outer barrel, and the tip assembly is nested within the barrel structure. This nested arrangement allows multiple adjustment functions to be integrated within a compact space, reducing overall complexity while maintaining adaptability.
Solution Approach 2:
The pen body is segmented into distinct adjustable components: the inner barrel, outer barrel, and tip assembly. Each segment can be independently adjusted to accommodate different cartridge dimensions, allowing for modular adaptation rather than a completely redesignable structure.
3Adaptability or versatility
If adjustable barrels and collet mechanism are added for universal cartridge reception, then the versatility improves, but the manufacturing complexity increases
Solution Approach 1:
The patent utilizes parameter changes in the form of threaded adjustments and movable positions along the pen body. The barrels can be positioned at different parameters (locations) to accommodate various cartridge dimensions, and the collet provides parameter adjustment through compression to match cartridge diameters.
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 the pen to accommodate different sized ink cartridges, ensuring proper fit and function without the need for specific cartridge matching, enhancing convenience and versatility.
Implementation Method 1
one or more O-rings are carried on a distal end of the pen body. The one or more O-rings provide a rotational frictional interference between the pen body and the inner bore of the outer barrel.
Implementation Method 2
The collet is carried within the tip and is configured for compressive adjustment to a writing end of the refill cartridge.
Data Source
AI summary
A bolt-action pen body is adapted as a universal receiver of an ink cartridge refill. The bolt action pen includes a hollow cylindrical pen body. A tip is removably coupled with an outer barrel at the distal end of the pen body. A refill cartridge is selectively extensible and retractable from the tip by a lever action movement of a bolt and a bolt carrier within a slot defined through a sidewall of the pen body. The bolt action pen provides for universal adjustment to various shapes of refill cartridges. An inner barrel is coupled with the pen body and is configured to adjust the pen body to a longitudinal length of the refill cartridge. A collet carried within the tip is configured for compressive adjustment to a diameter of writing end of the refill cartridge.