Active Cover Plate Prongs for Recessed GFCI Terminals
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Solution Overview
Problem
GFCI outlets have a wider design with recessed terminals, creating a small gap between the outlet and the electrical box, making it challenging for active cover plates to connect securely without jamming into wires or failing to contact terminals, which affects installation and functionality.
Innovation Solution
The active cover plate features prongs with a resilient contact that can deflect to fit through narrow gaps and maintain contact with terminals, allowing secure installation and operation, with options to connect to either line or load terminals for power and fault protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the GFCI outlet uses a wider design with recessed terminals, then the outlet provides better safety and fault protection, but the gap between the outlet and electrical box becomes too small, making it difficult for active cover plates to connect securely
Solution Approach 1:
The cover plate incorporates resilient (flexible) prongs that can dynamically adjust their position. These prongs are designed to flex outward to pass through the narrow gap between the GFCI outlet and electrical box, then spring back inward to securely contact the recessed terminals, enabling reliable installation despite the tight space
Solution Approach 2:
The prongs utilize elastic deformation to change their physical state temporarily during installation. By applying force to flex the prongs outward, they can navigate the restricted gap, and when the force is released, they return to their original shape to maintain secure electrical contact with the terminals
2Volume of stationary object
If the GFCI outlet has recessed terminals with small gap, then the outlet structure is more compact, but the active cover plate prongs may jam into wires or fail to contact terminals
Solution Approach 1:
The resilient prongs provide dynamic adaptation to the installation environment. They can flex outward to avoid obstructions like wires in the narrow gap, then spring back to reliably contact the recessed terminals, ensuring electrical connectivity is achieved despite the compact outlet structure
Solution Approach 2:
The elastic material of the prongs enables self-adjustment during installation. The prongs automatically flex and rebound based on the resistance encountered, allowing them to navigate around wires or other obstructions and find the correct position to contact the terminals without manual intervention
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 ensures reliable installation and operation of active cover plates on GFCI outlets by accommodating the unique terminal positioning and size, preventing jamming and ensuring electrical connectivity, even when the GFCI outlet is tripped.
Implementation Method 1
prongs with a resilient contact that can deflect to fit through narrow gaps and maintain contact with terminals
Data Source
AI summary
A variety of active cover plate configurations with prongs configured to contact side screw terminals of electrical receptacles are described.