Tool-Free Electrical Conduit Coupling via Tapered Nesting
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Solution Overview
Problem
Current electrical conduit systems are cumbersome to install and require tools, making it difficult to protect wires traveling through studs effectively without causing damage or arc fault conditions.
Innovation Solution
A stud wire protector system comprising two hollow cylindrical members with specific fittings and conduit couplers that allow for tool-free installation of electrical conduit by press-fitting or tapered fittings, providing protection from external damage and ease of wire pulling during installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional electrical conduit systems are used, then wire protection is provided, but installation becomes cumbersome and requires tools
Solution Approach 1:
The conduit system is divided into modular sections with standardized coupling mechanisms. Each conduit segment can be independently installed and connected using simple push-to-connect couplings, eliminating the need for complex tool-based assembly while maintaining protective functionality.
Solution Approach 2:
The coupling mechanism employs a nested structure where an inner tapered component fits within an outer coupling body. This nested design allows for tool-free assembly through simple insertion, where the tapered inner piece automatically secures the conduit segment without requiring additional tools or complex operations.
2Reliability
If traditional conduit installation methods are used, then structural protection is achieved, but installation time increases
Solution Approach 1:
The coupling mechanisms are pre-assembled with tapered securing pieces already in place within the coupling bodies. This preliminary preparation allows installers to simply push conduit segments into the pre-configured couplings without requiring on-site assembly or adjustment, dramatically reducing installation time while ensuring consistent structural protection.
Solution Approach 2:
The tapered inner pieces within the couplings are designed to automatically secure conduit segments through friction and geometric interference when inserted. This self-securing mechanism eliminates the need for additional fastening operations or tool-based adjustments, allowing rapid installation while maintaining reliable structural protection.
3Productivity
If simple coupling mechanisms are used, then installation speed increases, but connection strength may be compromised
Solution Approach 1:
The coupling mechanism utilizes a tapered geometry that transforms the insertion force into radial clamping pressure. As the conduit segment is pushed into the coupling, the tapered surfaces convert axial force into radial force, creating strong friction-based holding power that maintains connection strength despite the simplicity and speed of the installation process.
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 a simple and fast method for installing electrical conduit systems without tools, protecting wires from damage and facilitating smooth wire insertion, while accommodating various conduit sizes and types.
Implementation Method 1
The first fitting is configured to insert within and to extend beyond the proximal end of the first hollow cylindrical member
Implementation Method 2
the first fitting is a tapered press-fitting. In one embodiment, the second fitting is a tapered fitting
Data Source
AI summary
A stud wire protector includes: a first hollow cylindrical and a second hollow cylindrical member. Methods of inserting the stud wire protector are also provided. The stud-wire protector is also part of an electrical conduit coupling system. The electrical conduit coupling system includes: two or more stud wire protectors and two or more conduit couplers. Methods of attaching the electrical conduit coupling system to two or more studs are also provided.