Flexible Metal Conduit Connector Tool with Adjustable Studs
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Solution Overview
Problem
Flexible metal conduit cutting operations often result in sharp burrs, posing handling and safety concerns during the installation of fittings due to the lack of effective tools that can safely and efficiently attach fittings to conduit ends.
Innovation Solution
A tool designed for attaching fittings to flexible metal conduit, featuring a handle with extendable studs and a centering rod, which allows for better control and safety by keeping the user's hands away from sharp edges, and includes an interface for connecting an extension tool, constructed from various materials such as metal or plastic.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional tools are used to attach fittings to conduit, then the installation process can be completed, but the user's hands are exposed to sharp burrs causing safety concerns
Solution Approach 1:
The patent introduces a specialized tool as an intermediary device between the user's hands and the sharp burrs on the conduit. The tool features a handle with two spaced-apart studs that engage with the fitting, allowing the user to manipulate the fitting without direct hand contact with the conduit end. This mediator approach transfers the harmful interaction from the user to the tool, resolving the safety contradiction.
Solution Approach 2:
The tool divides the fitting attachment function into separate components: the handle provides a safe gripping distance, the two studs provide engagement points with the fitting, and the spaced arrangement of studs creates a lever arm that provides mechanical advantage. This segmentation allows each component to address specific aspects of the problem, including safety and operational ease.
2Object-affected harmful factors
If the user's hands are kept away from sharp edges for safety, then injury risk is reduced, but control over the fitting during installation may be compromised
Solution Approach 1:
The tool employs a ratcheting mechanism that allows dynamic adjustment of the stud spacing relative to the handle. This enables the user to optimize the lever arm length and mechanical advantage based on the specific fitting being installed, maintaining control while keeping hands at a safe distance. The adaptability resolves the contradiction between safety distance and control.
Solution Approach 2:
The tool extends the interaction dimension by using a lever arm formed by the spaced studs on the handle. Instead of direct linear contact with the fitting, the user applies force at a distance, creating rotational moment and mechanical advantage. This dimensional extension provides both safety distance and enhanced control simultaneously.
3Device complexity
If a fixed-distance tool is used, then the structure is simple, but it cannot accommodate fittings of different sizes requiring different stud spacing
Solution Approach 1:
The ratcheting mechanism enables dynamic reconfiguration of the stud spacing on the handle. Users can adjust the distance between studs to match different fitting sizes, and the ratchet maintains the selected position during use. This dynamic adaptability allows a single tool to handle multiple fitting types without requiring multiple fixed-distance tools.
Solution Approach 2:
The adjustable stud spacing mechanism makes the tool universal, capable of accommodating various fitting sizes and types. Rather than requiring separate tools for different applications, this single tool with adjustable geometry can perform multiple functions, resolving the contradiction between structural simplicity and adaptability.
Data Source
AI summary
The subject matter described in this specification relates generally to a tool for installing a flexible metal conduit screw-in connector onto a flexible metal conduit and a method for installing the flexible metal conduit connector tool. The flexible metal conduit screw-in connector tool includes a handle, a centering rod, and two studs. The flexible metal conduit connector tool is to engage a flexible metal conduit screw-in connector.