Filtering Visor with Elastic Seal for Fog-Free Respiratory Protection
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Solution Overview
Problem
Current protective devices for pandemics and hospital environments either inadequately protect the eyes or face, with fabric masks not covering the entire face and visors being ineffective against airborne particles and viruses, and combining both devices is cumbersome.
Innovation Solution
A protective visor device with a headband, pins, and a filter element that includes elastic hems for secure attachment, ensuring complete facial protection while allowing clear vision and preventing fogging, along with a system for attaching a glass and filtering fabric, and accommodating glasses for continued use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fabric mask is used to protect the nose and mouth, then respiratory protection is achieved, but the eyes remain unprotected and visibility is obstructed
Solution Approach 1:
The patent combines a visor structure with a fabric mask into a single integrated device. The visor portion protects the eyes and face while the fabric mask portion protects the nose and mouth, creating comprehensive facial protection that was not achievable with separate devices. This merging resolves the contradiction by providing both respiratory protection and eye protection simultaneously.
Solution Approach 2:
The protective device is designed to perform multiple functions: respiratory protection through the fabric mask, eye protection through the visor, and maintained visibility through the transparent visor material. This multi-functionality allows a single device to address both the respiratory protection need and the eye protection need that were previously addressed by separate devices.
2Object-affected harmful factors
If a visor-type protection is used to protect against droplet projection, then eye protection is achieved, but protection against airborne particles and viruses is ineffective
Solution Approach 1:
The patent merges a visor structure with a fabric mask structure into one integrated protective device. The fabric mask component provides filtration for airborne particles and viruses, while the visor component provides eye protection and droplet shielding. This combination resolves the contradiction by integrating the airborne protection capability of the fabric mask with the eye protection capability of the visor.
3Object-affected harmful factors
If both a fabric mask and visor are worn simultaneously, then comprehensive facial protection is achieved, but the device becomes cumbersome and complex
Solution Approach 1:
The patent integrates the fabric mask and visor into a single unified device with a common headband structure. The fabric mask and visor are connected through integration elements that allow them to function as one cohesive protective system rather than two separate devices worn together. This merging reduces the complexity that would result from wearing both devices separately while maintaining comprehensive facial protection.
4Object-affected harmful factors
If a fabric mask covers the entire face, then comprehensive protection is achieved, but oxygenation is reduced and fogging occurs
Solution Approach 1:
The protective device is segmented into two distinct functional portions: a fabric mask portion that provides filtration and coverage, and a visor portion that provides eye protection and maintains breathability. This segmentation allows each portion to perform its specific function optimally - the fabric mask provides comprehensive coverage while the visor maintains oxygenation and prevents fogging through its transparent, breathable design.
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
Provides comprehensive facial protection against airborne pathogens, maintains clear vision, and prevents hand-to-face contact, suitable for various users including children and those with disabilities, while allowing for oxygenation and preventing fogging.
Implementation Method 1
The headband contains four stops: two stops (6) and two stops (7) and (10) which accommodate the elastics placed in the rear and front hems respectively of the filtering fabric
Implementation Method 2
a system for fixing the glass on the headband by pins (obtained by thermoforming) in order to come as a pressure system, fixing the glass on the headband quickly and efficiently
Implementation Method 3
On this window and this headband, is fixed a filter element (11) in the upper and lower parts and sides
Implementation Method 4
The window (2) is curved in the lower part in order to align the channel (9) and the abutment (10) of the headband and thus ensure perfect maintenance of the filtering fabric (11) on the assembly
Data Source
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AI summary
A protective device of the filtering visor type against viruses. The invention relates to a face protection system (nose, eyes, mouth) in the event of a COVID-19 pandemic. It consists of a headband to which a visor is attached by a system of male and female pins. A filter fabric is placed around the periphery of this assembly by an elastic system contained within the hems of the same filter fabric. The visor is held in place by a channel on the visor and by stops integrated into the headband. It complies with AFNOR standards to provide sufficient filtration for the respiratory system in the event of a pandemic for the general public. The fabric covers the entire perimeter of the visor, thus creating a space between the face and the visor to allow air to pass through and be filtered. The shape and size of the fabric ensure high breathability while maintaining a low CO2 level.The large volume of air circulated prevents fogging of the lens. The visor is certified as Category 3 PPE (Personal Protective Equipment) with an EN 166 standard for the lens and is recognized as a UNS1 general public face mask thanks to its fabric.