Active Cover Plate Power Pickup for Switch Nightlight Control

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Solution Overview

Problem

Designing a nightlight for switch installations that is easy to install and provides adequate illumination without adverse effects, while addressing challenges in existing switch designs such as limited control over light output and integration with electrical wiring.

Innovation Solution

The use of an active cover plate that contacts the screw terminals of light switches to extract electrical power, allowing for independent illumination control and integration with various light switch configurations, including toggle and rocker switches, using prongs with insulation to prevent electrical contact with surrounding conductors and a circuit board for illumination.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If an active cover plate contacts screw terminals to extract electrical power, then illumination control and integration with light switch configurations is improved, but risk of electrical contact with surrounding conductors increases

Engineering Contradiction:

Improveintegration with light switch configurationsVSAvoidelectrical contact with surrounding conductors

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent introduces insulated prongs as an intermediary element between the screw terminals and the surrounding environment. These prongs feature insulation coatings that mediate the electrical connection, allowing power extraction while preventing harmful contact with adjacent conductors or grounded surfaces.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The cover plate design applies insulation selectively at critical contact points where electrical hazards exist. The insulation is concentrated on the prongs that contact screw terminals, providing localized protection exactly where electrical contact risks are present, rather than insulating the entire device.

Inventive Principle:

Principle #3Local quality

2Illumination intensity

If a nightlight is installed over a light switch, then illumination is provided, but control over light output is limited

Engineering Contradiction:

Improvelight outputVSAvoidcontrol over light output

Core Design Contradiction:

Illumination intensityVSEase of operation

Solution Approach 1:

The patent implements dynamic control of illumination intensity through dimming capabilities. The nightlight can adjust its brightness level based on user preference or ambient light conditions, transforming a static light output into a dynamically adjustable feature that responds to operational needs.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The cover plate integrates multiple functions including illumination, dimming control, and motion sensing capabilities. This multi-functionality allows the device to adapt to various lighting scenarios and user requirements, enhancing operational control beyond simple on/off switching.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If an active cover plate is designed to accommodate various switch orientations and types, then versatility is improved, but device complexity increases

Engineering Contradiction:

Improveaccommodation of switch orientations and typesVSAvoidcover plate design

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent designs a universal cover plate that can accommodate multiple switch types (toggle, rocker, push-button) and various orientations. The prong configuration and mounting mechanism are designed to work with different switch geometries, allowing a single device design to serve multiple applications without requiring specialized variants.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The cover plate is designed as a modular assembly with separable components including the faceplate, prongs, and mounting elements. This segmentation allows for flexible configuration and adaptation to different switch types while keeping each individual component relatively simple in design.

Inventive Principle:

Principle #1Segmentation

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 easy installation and customizable illumination levels, ensuring reliable power extraction from light switches, accommodating various switch orientations and types, and providing efficient illumination without disrupting the primary function of the light switches.

Implementation Method 1

using prongs with insulation to prevent electrical contact with surrounding conductors

Methodology Applied

Scientific EffectElectrical insulation: Dielectric

Implementation Method 2

a circuit board for illumination

Methodology Applied

Scientific EffectElectroluminescence: Electroluminescence

Data Source

PatentUS12142880B2Active cover plates

Publication Date: 2024.11.12 SNAPRAYS LLC

AI summary

A variety of active cover plate configurations with prongs configured to contact side screw terminals of electrical receptacles are described. In one illustrative embodiment, an active cover plate includes a multi-gang face plate configured to be installed over a multi-gang light switch installation, the multi-gang faceplate including at least two apertures sized to accept a manually manipulatable element of switches in the multi-gang light switch installation. Prongs extend rearward from the multi-gang faceplate around at least one of the apertures.