Battery-Powered Pipe Threader With Swing-Out Roll Groover
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Solution Overview
Problem
Portable pipe threaders are limited by their reliance on AC motors that require a remote power source and lack efficient deployment mechanisms, making them less portable and user-friendly.
Innovation Solution
A battery-powered portable pipe threader with a collapsible stand, guide rails, and a dual-chuck spindle assembly that includes a roll groover with unique jaw interfaces to prevent improper assembly and ensure concentricity, along with an assist spring for easy deployment and adjustable stop for locking the stand in place.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If AC motor with remote power source is used, then motor power is sufficient, but portability is reduced
Solution Approach 1:
The patent replaces the AC motor system with a battery-powered motor system. This substitution eliminates the need for external power cords and remote power sources, enabling the pipe threader to be used in locations without electrical outlets while maintaining sufficient motor power for threading operations.
Solution Approach 2:
The patent divides the power source into portable battery units that can be independently carried and attached to the device. This segmentation allows the power source to be separated from the main body, enhancing portability while still providing adequate power for the motor.
2Ease of operation
If collapsible stand with assist spring is used, then deployment ease is improved, but structural complexity increases
Solution Approach 1:
The assist spring functions as a counterweight mechanism that offsets the weight of the stand and carriage assembly. When the user releases the locking mechanism, the spring automatically propels the stand into its operational position, significantly reducing the physical effort required for deployment.
Solution Approach 2:
The assist spring is pre-loaded during the folding phase, storing potential energy that is automatically released during deployment. This preliminary action eliminates the need for manual lifting or positioning of the heavy stand components during setup.
3Manufacturing precision
If unique jaw interfaces are implemented, then assembly precision is improved, but manufacturing complexity increases
Solution Approach 1:
The patent employs asymmetric jaw interfaces where each jaw has a unique profile that corresponds to a specific position on the jaw plate. This asymmetry ensures that jaws can only be installed in their correct positions, guaranteeing proper alignment and concentricity of the chuck assembly without requiring complex adjustment procedures.
Solution Approach 2:
The unique jaw interfaces provide self-aligning and self-correcting functionality. When jaws are installed on the jaw plate, the asymmetric profiles automatically guide them into the correct positions, eliminating the need for external alignment tools or complex assembly procedures.
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 battery-powered design enhances portability and user convenience, while the dual-chuck spindle assembly ensures precise pipe threading and the assist spring simplifies stand deployment, improving overall efficiency and usability.
Implementation Method 1
An assist spring has a first end coupled to a lower portion of the first leg and a second end coupled to an upper portion of the second leg. The assist spring exerts a bias force urging the collapsible stand to an upright deployed position
Data Source
AI summary
A portable pipe threader includes a collapsible stand, a housing supported by the collapsible stand, the housing supporting a battery-powered drive assembly, a first set of guide rails extending from a first end of the housing and supporting pipe threading tools, and a second set of guide rails extending from a second end of the housing and supporting a roll groover. The roll groover is configured to swing about a first one of the second set of guide rails to selectively engage a second one of the second set of guide rails.