RF Emission Shielding Case for Portable Devices

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Solution Overview

Problem

Portable wireless electronic devices emit harmful electromagnetic and radio frequency radiation, exposing users to potentially adverse health effects, and existing shielding solutions either fail to provide adequate protection or compromise device functionality.

Innovation Solution

A lightweight, customizable electromagnetic shielding case made from materials like expanded monel metal alloy foil and fine copper mesh, which reduces electromagnetic and radio frequency radiation exposure while allowing optimal device functionality by redirecting unnecessary radiation away from the user.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If electromagnetic shielding materials are added to portable wireless devices, then radiation protection is improved, but device weight increases

Engineering Contradiction:

Improveradiation exposureVSAvoiddevice weight

Core Design Contradiction:

Object-affected harmful factorsVSWeight of moving object

Solution Approach 1:

The patent employs thin flexible shielding films made of conductive materials that can be applied as overlays or integrated into device casings. These thin films provide effective electromagnetic shielding without adding substantial weight, resolving the contradiction between radiation protection and device weight.

Inventive Principle:

Principle #30Flexible shells and thin films

Solution Approach 2:

The patent utilizes composite materials combining conductive particles or layers with flexible polymer substrates. This creates lightweight shielding materials that maintain flexibility and conformability while providing effective radiation blocking, thus improving protection without significantly increasing device weight.

Inventive Principle:

Principle #40Composite materials

2Object-affected harmful factors

If shielding materials are added to portable wireless devices, then radiation protection is improved, but device complexity increases

Engineering Contradiction:

Improveradiation exposureVSAvoiddevice complexity

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent integrates shielding functionality directly into existing device components such as the back casing, screen protector, or case cover. By merging shielding with structural or protective elements already present in the device, the solution provides radiation protection without adding separate complex subsystems.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The shielding materials are designed to serve multiple functions simultaneously - providing radiation protection while also serving as protective casing, screen guard, or decorative element. This multi-functionality reduces overall device complexity by eliminating the need for dedicated shielding components.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Object-affected harmful factors

If shielding materials are added to portable wireless devices, then radiation protection is improved, but manufacturing cost increases

Engineering Contradiction:

Improveradiation exposureVSAvoidmanufacturing cost

Core Design Contradiction:

Object-affected harmful factorsVSEase of manufacture

Solution Approach 1:

The patent employs cost-effective shielding materials such as conductive paints, printed metal layers, or inexpensive polymer composites that can be applied through simple manufacturing processes like screen printing or lamination. These materials provide adequate shielding at low cost, making the solution economically viable for mass production.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The patent optimizes shielding material thickness, conductivity, and layer configuration to achieve the minimum effective shielding performance required. By adjusting these parameters to the lowest adequate levels, the solution reduces material costs and manufacturing complexity while maintaining sufficient radiation protection.

Inventive Principle:

Principle #35Parameter changes

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

Significantly reduces electromagnetic and radio frequency radiation exposure to users, providing nearly complete protection in some cases without affecting the device's ability to transmit and receive signals, thus minimizing health risks associated with long-term exposure.

Implementation Method 1

redirecting unnecessary radiation away from the user

Methodology Applied

Scientific EffectElectromagnetic radiation redirection: Reflection

Implementation Method 2

made of a specialized flexible material that may be placed on the surface of a cellular phone or other portable electronic device to minimize the harmful effects of electromagnetic emissions

Methodology Applied

Scientific EffectElectromagnetic absorption: Absorption (EM radiation)

Data Source

PatentUS12009578B2Radio frequency emission guard for portable wireless electronic device

Publication Date: 2024.06.11 STINGRAY SHIELDS CORP

AI summary

A radio frequency and electromagnetic emission shield employed on wireless personal and portable electronic devices, containing one or more layers of radio frequency (RF) or electromagnetic (EM) screening material, shielding the user from harmful RF or EM radiation, or a redirection antenna that receives all RF signals, and redirects those signals away from the user. The RF emission shield may be contained within a plurality of outer layers, providing a secure fit to a wireless electronic device and an outer layer providing an easy grip for the user.